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1

Duty Cycle Software  

Duty cycles capture the influence of one variable in relations to the whole system. This allows for analysis in determining the impact of new ...

2

CMVRTC: Medium Truck Duty Cycle  

NLE Websites -- All DOE Office Websites (Extended Search)

medium truck duty cycle (MTdc) project medium truck duty cycle (MTdc) project OVERVIEW The Medium Truck Duty Cycle (MTDC) project involves efforts to collect, analyze and archive data related to medium-truck operations in real-world driving environments. Such data and information will be useful to support technology evaluation efforts and to provide a means of accounting for real-world driving performance within medium-class truck analyses. The project involves private industry partners from various truck vocations. The MTDC project is unique in that there currently does not exist a national database of characteristic duty cycles for medium trucks. This project involves the collection of data from multiple vocations (four vocations) and multiple vehicles within these vocations (three vehicles per

3

CMVRTC: Heavy Truck Duty Cycle  

NLE Websites -- All DOE Office Websites (Extended Search)

heavy truck duty cycle (HTDC) project heavy truck duty cycle (HTDC) project OVERVIEW The Heavy Truck Duty Cycle (HTDC) Project was initiated in 2004 and is sponsored by the US Department of Energy's (DOE's) Office of FreedomCar and Vehicle Technologies Program. ORNL designed the research program to generate real-world-based duty cycle data from trucks operating in long-haul operations and was designed to be conducted in three phases: identification of parameters to be collected, instrumentation and pilot testing, identification of a real-world fleet, design of the data collection suite and fleet instrumentation, and data collection, analysis, and development of a duty cycle generation tool (DCGT). ANL logo dana logo michelin logo Schrader logo This type of data will be useful for supporting energy efficiency

4

Medium Truck Duty Cycle (MTDC)  

NLE Websites -- All DOE Office Websites (Extended Search)

Routes Data Acquisition System Setup Routes Data Acquisition System Setup Medium Truck Duty Cycle (MTDC) Objective This Department of Energy project focuses on the collection and analysis medium truck (Class-6 and -7) duty cycle data from real-world operations. Analysis of this data will provide information pertaining to the fuel efficiencies and performance of medium trucks in several vocations. Outcomes Rich source of data and information that can contribute to the development of new tools Sound basis upon which DOE can make technology investment decisions A national archive of real-world-based medium-truck operational data that will support medium-duty vehicle energy efficiency research Collected Data Speed & Acceleration Fuel Consumption GPS Location Road Grade

5

Heavy Truck Duty Cycle (HTDC) Project OVERVIEW The Heavy Truck Duty Cycle (HTDC)  

NLE Websites -- All DOE Office Websites (Extended Search)

(HTDC) Project (HTDC) Project OVERVIEW The Heavy Truck Duty Cycle (HTDC) Project is sponsored by the US Department of Energy's (DOE's) Office of FreedomCar and Vehicle Technologies. The project involves efforts to collect, analyze and archive data and information related to class -8 truck operation in real-world environments. Such data and information will be useful for supporting: energy efficiency technology evaluation efforts, the

6

Large Scale Truck Duty Cycle.pub  

NLE Websites -- All DOE Office Websites (Extended Search)

Truck Duty Cycle Evaluation and Truck Duty Cycle Evaluation and Assessment of Fuel Efficiency and Emission Reduction Technologies Oak Ridge National Laboratory managed by UT-Battelle, LLC for the U.S. Department of Energy under Contract number DE-AC05-00OR22725 Research Areas Freight Flows Passenger Flows Supply Chain Efficiency Transportation: Energy Environment Safety Security Vehicle Technologies Research Brief T he Oak Ridge National Laboratory (ORNL) is conducting research to better understand truck fuel economy and emissions in normal everyday use, as part of a study sponsored by the Department of Energy (DOE) Vehicle Technologies Program (VTP). By collecting duty cycle data (velocity, acceleration and elevation) during normal operations of literally thousands of vehicles for an

7

Technology Assessment Report: Duty Cycling Controllers Revisited  

SciTech Connect

This report covers an assessment of two brands of energy management controllers that are currently being offered that utilize the principle of duty cycling to purportedly save energy for unitary air conditioners and heat pumps, gas furnaces, and gas fired boilers. The results of an extensive review of past research on this subject as well as a review of vendor sponsored field testing of these controllers compares these newer controllers to those of the past. Included also is a discussion of how the duty cycling principle is prone to misinterpretation as to its potential to save energy.

Webster, Tom; Benenson, Peter

1998-05-01T23:59:59.000Z

8

Duty Cycle Analysis & Tools: Maximizing Vehicle Performance (Presentation)  

DOE Green Energy (OSTI)

Shows that the benefits of using hybrid vehicle trucks in fleets depends on the duty cycle, or how the vehicles will be driven (e.g., stop and go) over a particular route (e.g., urban or rural).

Walkowicz, K.

2009-10-28T23:59:59.000Z

9

Building aggressively duty-cycled platforms to achieve energy efficiency  

E-Print Network (OSTI)

by each wireless card in three di?erent states of operation.cient operation. Furthermore, since the wireless is a sharedoperation, Awake Mode(AM), and the Power Save Mode (PSM), achieved by duty cycling the wireless

Agarwal, Yuvraj

2009-01-01T23:59:59.000Z

10

Correlating Cycle Duty with Cost at Fossil Fuel Power Plants  

Science Conference Proceedings (OSTI)

The work described in this report is part of the ongoing EPRI Cycling Impacts Program to develop a range of analysis and simulation-capable planning tools. The objectives are to better determine cycling impacts (including incremental costs), reliability impact, component level effects, and impacts and other elements needed to better plan and manage operational and financial aspects of power generation. This report documents early efforts to establish strong correlations between the cycle duty of a produc...

2001-09-14T23:59:59.000Z

11

Event-driven adaptive duty-cycling in sensor networks  

Science Conference Proceedings (OSTI)

Energy conservation is a major issue in the management of sensor networks. In this paper, we consider the problem of optimising the performance of energy-constrained sensor networks in the context of event-detection applications, with the performance ... Keywords: MDP, Markov decision process, adaptive duty-cycling, energy conservation, energy consumption, environment monitoring, event clustering, sensor networks, simulation

Srikanth Sundaresan; Israel Koren; Zahava Koren; C. Mani Krishna

2009-10-01T23:59:59.000Z

12

Large Scale Duty Cycle (LSDC) Project: Tractive Energy Analysis Methodology and Results from Long-Haul Truck Drive Cycle Evaluations  

DOE Green Energy (OSTI)

This report addresses the approach that will be used in the Large Scale Duty Cycle (LSDC) project to evaluate the fuel savings potential of various truck efficiency technologies. The methods and equations used for performing the tractive energy evaluations are presented and the calculation approach is described. Several representative results for individual duty cycle segments are presented to demonstrate the approach and the significance of this analysis for the project. The report is divided into four sections, including an initial brief overview of the LSDC project and its current status. In the second section of the report, the concepts that form the basis of the analysis are presented through a discussion of basic principles pertaining to tractive energy and the role of tractive energy in relation to other losses on the vehicle. In the third section, the approach used for the analysis is formalized and the equations used in the analysis are presented. In the fourth section, results from the analysis for a set of individual duty cycle measurements are presented and different types of drive cycles are discussed relative to the fuel savings potential that specific technologies could bring if these drive cycles were representative of the use of a given vehicle or trucking application. Additionally, the calculation of vehicle mass from measured torque and speed data is presented and the accuracy of the approach is demonstrated.

LaClair, Tim J [ORNL

2011-05-01T23:59:59.000Z

13

Characterization of Fuel Cell Vehicle Duty Cycle Elements  

DOE Green Energy (OSTI)

This report covers research done as part of US Department of Energy contract DE-PS26-99FT14299 with the Fuel Cell Propulsion Institute on the fuel cell RATLER{trademark} vehicle, Lurch, as well as work done on the fuel cells designed for the vehicle. All work contained within this report was conducted at the Robotic Vehicle Range at Sandia National Laboratories in Albuquerque New Mexico. The research conducted includes characterization of the duty cycle of the robotic vehicle. This covers characterization of its various abilities such as hill climbing and descending, spin-turns, and driving on level ground. This was accomplished with the use of current sensors placed in the vehicle in conjunction with a Data Acquisition System (DAS), which was also created at Sandia Labs. Characterization of the two fuel cells was accomplished using various measuring instruments and techniques that will be discussed later in the report. A Statement of Work for this effort is included in Appendix A. This effort was able to complete characterization of vehicle duty cycle elements using battery power, but problems with the fuel cell control systems prevented completion of the characterization of the fuel cell operation on the benchtop and in the vehicle. Some data was obtained characterizing the fuel cell current-voltage performance and thermal rise rate by bypassing elements of the control system.

MAISH, ALEXANDER B.; NILAN, ERIC J.; BACA, PAUL M.

2002-12-01T23:59:59.000Z

14

Energy-Optimal Scheduling in Low Duty Cycle Sensor Networks  

E-Print Network (OSTI)

Energy consumption of a wireless sensor node mainly depends on the amount of time the node spends in each of the high power active (e.g., transmit, receive) and low power sleep modes. It has been well established that in order to prolong node's lifetime the duty-cycle of the node should be low. However, low power sleep modes usually have low current draw but high energy cost while switching to the active mode with a higher current draw. In this work, we investigate a MaxWeightlike opportunistic sleep-active scheduling algorithm that takes into account time- varying channel and traffic conditions. We show that our algorithm is energy optimal in the sense that the proposed ESS algorithm can achieve an energy consumption which is arbitrarily close to the global minimum solution. Simulation studies are provided to confirm the theoretical results.

Aydin, Nursen; Ercetin, Ozgur

2011-01-01T23:59:59.000Z

15

Methods, systems and apparatus for adjusting duty cycle of pulse width modulated (PWM) waveforms  

DOE Patents (OSTI)

Embodiments of the present invention relate to methods, systems and apparatus for controlling operation of a multi-phase machine in a vector controlled motor drive system when the multi-phase machine operates in an overmodulation region. The disclosed embodiments provide a mechanism for adjusting a duty cycle of PWM waveforms so that the correct phase voltage command signals are applied at the angle transitions. This can reduce variations/errors in the phase voltage command signals applied to the multi-phase machine so that phase current may be properly regulated thus reducing current/torque oscillation, which can in turn improve machine efficiency and performance, as well as utilization of the DC voltage source.

Gallegos-Lopez, Gabriel; Kinoshita, Michael H; Ransom, Ray M; Perisic, Milun

2013-05-21T23:59:59.000Z

16

Medium Truck Duty Cycle Data from Real-World Driving Environments: Project Interim Report  

SciTech Connect

Since the early part of the 20th century, the US trucking industry has provided a safe and economical means of moving commodities across the country. At the present time, nearly 80% of the US domestic freight movement involves the use of trucks. The US Department of Energy (DOE) is spearheading a number of research efforts to improve heavy vehicle fuel efficiencies. This includes research in engine technologies (including hybrid and fuel cell technologies), lightweight materials, advanced fuels, and parasitic loss reductions. In addition, DOE is developing advanced tools and models to support heavy vehicle truck research, and is leading the 21st Century Truck Partnership whose stretch goals involve a reduction by 50% of the fuel consumption of heavy vehicles on a ton-mile basis. This Medium Truck Duty Cycle (MTDC) Project is a critical element in DOE s vision for improved heavy vehicle energy efficiency and is unique in that there is no other national database of characteristic duty cycles for medium trucks. It involves the collection of real-world data for various situational characteristics (rural/urban, freeway/arterial, congested/free-flowing, good/bad weather, etc.) and looks at the unique nature of medium trucks drive cycles (stop-and-go delivery, power takeoff, idle time, short-radius trips), to provide a rich source of data that can contribute to the development of new tools for fuel efficiency and modeling, provide DOE a sound basis upon which to make technology investment decisions, and provide a national archive of real-world-based medium-truck operational data to support heavy vehicle energy efficiency research. The MTDC project involves a two-part field operational test (FOT). For the Part-1 FOT, three vehicles, each from two vocations (urban transit and dry-box delivery) were instrumented for one year of data collection. The Part-2 FOT will involve the towing/recovery and utility vocations. The vehicles participating in the MTDC project are doing so through gratis partnerships in return for early access to the results of this study. Partnerships such as these are critical to FOTs in which real-world data is being collected. In Part 1 of the project, Oak Ridge National Laboratory(ORNL) established partnerships with the H.T. Hackney Company, one of the largest wholesale distributors in the country, distributing products to 21 states; and with the Knoxville Area Transit (KAT), the City of Knoxville s transit system, operating services across the city of Knoxville and parts of Knox co. These partnerships and agreements provided ORNL access to three Class-7 2005/2007 International day-cab tractors, model 8600, which regularly haul 28 ft pup trailers (H.T. Hackney Co) and three Class-7 2005 Optima LF-34 buses (KAT), for collection of duty cycle data. In addition, ORNL has collaborated with the Federal Motor Carrier Safety Administration (FMCSA) to determine if there were possible synergies between this duty cycle data collection effort and FMCSA s need to learn more about the operation and duty cycles of the second-largest fuel consuming commercial vehicle category in the US. FMCSA s primary interest was in collecting safety data relative to the driver, carrier, and vehicle. In order to collect the duty cycle and safety-related data, ORNL developed a data acquisition and wireless communication system that was placed on each test vehicle. Each signal recorded in this FOT was collected by means of one of the instruments incorporated into each data acquisition system (DAS). Native signals were obtained directly from the vehicle s J1939 and J1708 data buses. A VBOX II Lite collected Global Positioning System related information including speed, acceleration, and spatial location information at a rate of 5 Hz, and communicated this data via the CAN (J1939) protocol. The Air-Weigh LoadMaxx, a self-weighing system which determines the vehicle s gross weight by means of pressure transducers and posts the weight to the vehicle s J1939 data bus, was used to collect vehicle payload information. A cellular modem, the Raven X

Franzese, Oscar [ORNL; Lascurain, Mary Beth [ORNL; Capps, Gary J [ORNL

2011-01-01T23:59:59.000Z

17

Medium Truck Duty Cycle Data from Real-World Driving Environments: Final Report  

SciTech Connect

Since the early part of the 20th century, the US trucking industry has provided a safe and economical means of moving commodities across the country. At present, nearly 80% of US domestic freight movement involves the use of trucks. The US Department of Energy (DOE) is spearheading a number of research efforts to improve heavy vehicle fuel efficiencies. This includes research in engine technologies (including hybrid and fuel cell technologies), lightweight materials, advanced fuels, and parasitic loss reductions. In addition, DOE is developing advanced tools and models to support heavy vehicle research and is leading the 21st Century Truck Partnership and the SuperTruck development effort. Both of these efforts have the common goal of decreasing the fuel consumption of heavy vehicles. In the case of SuperTruck, a goal of improving the overall freight efficiency of a combination tractor-trailer has been established. This Medium Truck Duty Cycle (MTDC) project is a critical element in DOE s vision for improved heavy vehicle energy efficiency; it is unique in that there is no other existing national database of characteristic duty cycles for medium trucks based on collecting data from Class 6 and 7 vehicles. It involves the collection of real-world data on medium trucks for various situational characteristics (e.g., rural/urban, freeway/arterial, congested/free-flowing, good/bad weather) and looks at the unique nature of medium trucks drive cycles (stop-and-go delivery, power takeoff, idle time, short-radius trips). This research provides a rich source of data that can contribute to the development of new tools for FE and modeling, provide DOE a sound basis upon which to make technology investment decisions, and provide a national archive of real-world-based medium-truck operational data to support energy efficiency research. The MTDC project involved a two-part field operational test (FOT). For the Part-1 FOT, three vehicles each from two vocations (urban transit and dry-box delivery) were instrumented for the collection of one year of operational data. The Part-2 FOT involved the towing and recovery and utility vocations for a second year of data collection. The vehicles that participated in the MTDC project did so through gratis partnerships in return for early access to the results of this study. Partnerships such as these are critical to FOTs in which real-world data is being collected. In Part 1 of the project, Oak Ridge National Laboratory (ORNL) established partnerships with the H.T. Hackney Company (HTH), one of the largest wholesale distributors in the country, distributing products to 21 states; and with Knoxville Area Transit (KAT), the city of Knoxville s transit system, which operates across Knoxville and parts of Knox County. These partnerships and agreements provided ORNL access to three Class-7 day-cab tractors that regularly haul 28 ft pup trailers (HTH) and three Class-7 buses for the collection of duty cycle data. In addition, ORNL collaborated with the Federal Motor Carrier Safety Administration (FMCSA) to determine if there were possible synergies between this duty cycle data collection effort and FMCSA s need to learn more about the operation and duty cycles of medium trucks. FMCSA s primary interest was in collecting safety data relative to the driver, carrier, and vehicle. In Part 2 of the project, ORNL partnered with the Knoxville Utilities Board, which made available three Class-8 trucks. Fountain City Wrecker Service was also a Part 2 partner, providing three Class-6 rollback trucks. In order to collect the duty cycle and safety-related data, ORNL developed a data acquisition system (DAS) that was placed on each test vehicle. Each signal recorded in this FOT was collected by means of one of the instruments incorporated into each DAS. Other signals were obtained directly from the vehicle s J1939 and J1708 data buses. A VBOX II Lite collected information available from a global positioning system (GPS), including speed, acceleration, and spatial location information at a rate of 5 Hz for the Part 1

Lascurain, Mary Beth [ORNL; Franzese, Oscar [ORNL; Capps, Gary J [ORNL; Siekmann, Adam [ORNL; Thomas, Neil [ORNL; LaClair, Tim J [ORNL; Barker, Alan M [ORNL; Knee, Helmut E [ORNL

2012-11-01T23:59:59.000Z

18

Protocol assessment issues in low duty cycle sensor networks: The switching energy  

E-Print Network (OSTI)

Energy assessment of MAC protocols for wireless sensor networks is generally based on the times of transmit, receive and sleep modes. The switching energy between two consecutive states is generally considered negligible with respect to them. Although such an assumption is valid for traditional wireless ad hoc networks, is this assumption valid also for low duty cycle wireless sensor networks? The primary objective of this work is to shed some light on relationships between node switching energy and node duty cycle over the total energy consumption. In order to achieve the target, initially, we revisit the energy spent in each state and transitions of three widespread hardware platforms for wireless sensor networks by direct measurements on the EYES node. Successively, we apply the values obtained to the SMAC protocol by using the OmNet++ simulator. The main reason for using SMAC is that it is the protocol normally used as a benchmark against other architectures proposed.

A. G. Ruzzelli; P. Cotan; G. M. P. O’Hare; R. Tynan; P. J. M Havinga

2006-01-01T23:59:59.000Z

19

Building aggressively duty-cycled platforms to achieve energy efficiency  

E-Print Network (OSTI)

3.5.1 Reduction in Energy Consumption 3.5.2 End-to-EndMeasuring Power and Energy Consumption . . . . 2.3 Related1.1 Reducing the Energy Consumption of Computing Devices 1.2

Agarwal, Yuvraj

2009-01-01T23:59:59.000Z

20

Duty cycle testing and performance evaluation of the SM-229 teleoperator  

SciTech Connect

This paper contains the first known experimental studies and analyses of teleoperator performance for specific duty cycles. The results are presented in two distinct areas as position usage patterns, and as three-dimensional power grids. The position usage patterns are a valuable means to assess the available motion range. The power grids are a unique concept for evaluating joint performance. Final conclusions contain recommendations to upgrade the teleoperator for optimum performance. 3 refs., 16 figs.

Stoughton, R.S.; Kuban, D.P.

1985-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

A Proposed 80% Service Test to Satisfy the Duty Cycle and to Trend Battery Capacity  

Science Conference Proceedings (OSTI)

Current practice within the nuclear power industry is to use performance discharge tests for condition monitoring to determine when a battery has reached 80 of its rated capacity, which is considered the end of its service life. A service test is now used in every refueling outage to verify that a battery can satisfy its design basis function as defined by the battery duty cycle. A modified performance test is used at intervals of one-fourth the qualified life, typically every five years, to satisfy the ...

2010-11-11T23:59:59.000Z

22

Investigating potential efficiency improvement for light-duty transportation applications through simulation of an organic Rankine cycle for waste-heat recovery  

SciTech Connect

Modern diesel engines used in light-duty transportation applications have peak brake thermal efficiencies in the range of 40-42% for high-load operation with substantially lower efficiencies at realistic road-load conditions. Thermodynamic energy and exergy analysis reveals that the largest losses from these engines are due to heat loss and combustion irreversibility. Substantial improvement in overall engine efficiency requires reducing or recovering these losses. Unfortunately, much of the heat transfer either occurs at relatively low temperatures resulting in large entropy generation (such as in the air-charge cooler), is transferred to low-exergy flow streams (such as the oil and engine coolant), or is radiated or convected directly to the environment. While there are significant opportunities for recovery from the exhaust and EGR cooler for heavy-duty applications, the potential benefits of such a strategy for light-duty applications are unknown due to transient operation, low-load operation at typical driving conditions, and the added mass of the system. We have developed an organic Rankine cycle model using GT-Suite to investigate the potential for efficiency improvement through waste-heat recovery from the exhaust and EGR cooler of a light-duty diesel engine. Results from steady-state and drive-cycle simulations are presented, and we discuss strategies to address operational difficulties associated with transient drive cycles and competition between waste-heat recovery systems, turbochargers, aftertreatment devices, and other systems for the limited thermal resources.

Edwards, Kevin Dean [ORNL; Wagner, Robert M [ORNL

2010-01-01T23:59:59.000Z

23

Adaptive control of duty cycling in energy-harvesting wireless sensor networks  

E-Print Network (OSTI)

Increasingly many wireless sensor network deployments are using harvested environmental energy to extend system lifetime. Because the temporal profiles of such energy sources exhibit great variability due to dynamic weather patterns, an important problem is designing an adaptive duty-cycling mechanism that allows sensor nodes to maintain their power supply at sufficient levels (energy neutral operation) by adapting to changing environmental conditions. Existing techniques to address this problem are minimally adaptive and assume a priori knowledge of the energy profile. While such approaches are reasonable in environments that exhibit low variance, we find that it is highly inefficient in more variable scenarios. We introduce a new technique for solving this problem based on results from adaptive control theory and show that we achieve better performance than previous approaches on a broader class of energy source data sets. Additionally, we include a tunable mechanism for reducing the variance of the node’s duty cycle over time, which is an important feature in tasks such as event monitoring. We obtain reductions in variance as great as two-thirds without compromising task performance or ability to maintain energy neutral operation.

Christopher M. Vigorito; Deepak Ganesan; Andrew G. Barto

2007-01-01T23:59:59.000Z

24

Investigation of Path Dependence in Commercial Li-ion Cells Chosen for PHEV Duty Cycle Protocols (paper)  

Science Conference Proceedings (OSTI)

Path dependence is emerging as a premier issue of how electrochemical cells age in conditions that are diverse and variable in the time domain. For example, lithium-ion cells in a vehicle configuration will experience a variable combination of usage and rest periods over a range of temperature and state of charge (SOC). This is complicated by the fact that some aging can actually become worse (or better) when a lithium-ion cell is idle for extended periods under calendar-life (calL) aging, as opposed to cycle-life (cycL) conditions where the cell is used within a predictable schedule. The purpose of this study is to bridge the gap between highly idealized and controlled laboratory test conditions and actual field conditions regarding PHEV applications, so that field-type aging mechanisms can be mimicked and quantified in a repeatable laboratory setting. The main parameters are the magnitude and frequency of the thermal cycling, looking at isothermal, mild, and severe scenarios. To date, little is known about Li-ion aging effects caused by thermal cycling superimposed onto electrochemical cycling, and related path dependence. This scenario is representative of what Li-ion batteries will experience in vehicle service, where upon the typical start of a HEV/PHEV, the batteries will be cool or cold, will gradually warm up to normal temperature and operate there for a time, then will cool down after the vehicle is turned off. Such thermal cycling will occur thousands of times during the projected life of a HEV/PHEV battery pack. We propose to quantify the effects of thermal cycling on Li-ion batteries using a representative chemistry that is commercially available. The secondary Li-ion cells used in this study are of the 18650 configuration, have a nominal capacity rating of 1.9 Ah, and consist of a {LiMn2O4 + LiMn(1/3)Ni(1/3)Co(1/3)O2} cathode and a graphite anode. Electrochemical cycling is based on PHEV-relevant cycle-life protocols that are a combination of charge depleting (CD) and charge sustaining (CS) modes discussed in the Battery Test Manual for Plug-in Hybrid Electric Vehicles (INL, March 2008, rev0). A realistic duty cycle will involve both CD and CS modes, the proportion of each defined by the severity of the power demands. We assume that the cells will start each cycling day at 90% SOC, and that they will not be allowed to go below 35% SOC, with operation around 70% SOC being a nominal condition. The 35, 70, and 90% SOC conditions are also being used to define critical aspects of the related reference performance test (RPT) for this investigation. There are three primary components to the RPT, all assessed at room temperature: (A) static and residual capacity (SRC) over a matrix of current, (B) kinetics and pulse performance testing (PPT) over current for SOCs of interest, and (C) EIS for SOCs of interest. The RPT is performed on all cells every 30 day test interval, as well as a pulse-per-day to provide a quick diagnostic snapshot. Where feasible, we utilize various elements of Diagnostic Testing (DT) to characterize performance of the cells and to gain mechanistic-level knowledge regarding both performance features and limitations. We will present the rationale behind the experimental design, early data, and discuss the fundamental tools used to elucidate performance degradation mechanisms.

Kevin L. Gering

2011-04-01T23:59:59.000Z

25

Comparative urban drive cycle simulations of light-duty hybrid vehicles with gasoline or diesel engines and emissions controls  

SciTech Connect

Electric hybridization is a very effective approach for reducing fuel consumption in light-duty vehicles. Lean combustion engines (including diesels) have also been shown to be significantly more fuel efficient than stoichiometric gasoline engines. Ideally, the combination of these two technologies would result in even more fuel efficient vehicles. However, one major barrier to achieving this goal is the implementation of lean-exhaust aftertreatment that can meet increasingly stringent emissions regulations without heavily penalizing fuel efficiency. We summarize results from comparative simulations of hybrid electric vehicles with either stoichiometric gasoline or diesel engines that include state-of-the-art aftertreatment emissions controls for both stoichiometric and lean exhaust. Fuel consumption and emissions for comparable gasoline and diesel light-duty hybrid electric vehicles were compared over a standard urban drive cycle and potential benefits for utilizing diesel hybrids were identified. Technical barriers and opportunities for improving the efficiency of diesel hybrids were identified.

Gao, Zhiming [ORNL; Daw, C Stuart [ORNL; Smith, David E [ORNL

2013-01-01T23:59:59.000Z

26

Heat exchanger temperature response for duty-cycle transients in the NGNP/HTE.  

SciTech Connect

Control system studies were performed for the Next Generation Nuclear Plant (NGNP) interfaced to the High Temperature Electrolysis (HTE) plant. Temperature change and associated thermal stresses are important factors in determining plant lifetime. In the NGNP the design objective of a 40 year lifetime for the Intermediate Heat Exchanger (IHX) in particular is seen as a challenge. A control system was designed to minimize temperature changes in the IHX and more generally at all high-temperature locations in the plant for duty-cycle transients. In the NGNP this includes structures at the reactor outlet and at the inlet to the turbine. This problem was approached by identifying those high-level factors that determine temperature rates of change. First are the set of duty cycle transients over which the control engineer has little control but which none-the-less must be addressed. Second is the partitioning of the temperature response into a quasi-static component and a transient component. These two components are largely independent of each other and when addressed as such greater understanding of temperature change mechanisms and how to deal with them is achieved. Third is the manner in which energy and mass flow rates are managed. Generally one aims for a temperature distribution that minimizes spatial non-uniformity of thermal expansion in a component with time. This is can be achieved by maintaining a fixed spatial temperature distribution in a component during transients. A general rule of thumb for heat exchangers is to maintain flow rate proportional to thermal power. Additionally the product of instantaneous flow rate and heat capacity should be maintained the same on both sides of the heat exchanger. Fourth inherent mechanisms for stable behavior should not be compromised by active controllers that can introduce new feedback paths and potentially create under-damped response. Applications of these principles to the development of a plant control strategy for the reference NGNP/HTE plant can be found in the body of this report. The outcome is an integrated plant/control system design. The following conclusions are drawn from the analysis: (1) The plant load schedule can be managed to maintain near-constant hot side temperatures over the load range in both the nuclear and chemical plant. (2) The reactor open-loop response is inherently stable resulting mainly from a large Doppler temperature coefficient compared to the other reactivity temperature feedbacks. (3) The typical controller used to manage reactor power production to maintain reactor outlet temperature at a setpoint introduces a feedback path that tends to destabilize reactor power production in the NGNP. (4) A primary loop flow controller that forces primary flow to track PCU flow rate is effective in minimizing spatial temperature differentials within the IHX. (5) Inventory control in both the primary and PCU system during ramp load change transients is an effective means of maintaining high NGNP thermal efficiency while at reduced electric load. (6) Turbine bypass control is an effective means for responding to step changes in generator load when equipment capacity limitations prevent inventory control from being effective. (7) Turbine bypass control is effective in limiting PCU shaft over speed for the loss of generator load upset event. (8) The proposed control strategy is effective in limiting time variation of the differential spatial temperature distribution in the IHX during transients. Essentially the IHX can be made to behave in a manner where each point in the IHX experiences approximately the same temperature rate of change during a transient. (9) The stability of the closed-loop Brayton cycle was found to be sensitive to where one operates on the turbo-machine performance maps. There are competing interests: more stable operation means operating on the curves at points that reduce overall cycle efficiency. Future work should address in greater detail elements that came to light in the course of this work. Specifically: (1) A stability analysi

Vilim, R. B.; Nuclear Engineering Division

2009-03-12T23:59:59.000Z

27

Blazar Duty-Cycle at gamma-ray Frequecies: Constraints from Extragalactic Background Radiation and Prospects for AGILE and GLAST  

E-Print Network (OSTI)

We take into account the constraints from the observed extragalactic gamma-ray background to estimate the maximum duty cycle allowed for a selected sample of WMAP Blazars, in order to be detectable by AGILE and GLAST gamma-ray experiments. For the nominal sensitivity values of both instruments, we identify a subset of sources which can in principle be detectable also in a steady state without over-predicting the extragalactic background. This work is based on the results of a recently derived Blazar radio LogN-LogS obtained by combining several multi-frequency surveys.

Pittori, Carlotta; Colafrancesco, Sergio; Giommi, Paolo

2007-01-01T23:59:59.000Z

28

Battery Wear from Disparate Duty-Cycles: Opportunities for Electric-Drive Vehicle Battery Health Management; Preprint  

SciTech Connect

Electric-drive vehicles utilizing lithium-ion batteries experience wholly different degradation patterns than do conventional vehicles, depending on geographic ambient conditions and consumer driving and charging patterns. A semi-empirical life-predictive model for the lithium-ion graphite/nickel-cobalt-aluminum chemistry is presented that accounts for physically justified calendar and cycling fade mechanisms. An analysis of battery life for plug-in hybrid electric vehicles considers 782 duty-cycles from travel survey data superimposed with climate data from multiple geographic locations around the United States. Based on predicted wear distributions, opportunities for extending battery life including modification of battery operating limits, thermal and charge control are discussed.

Smith, K.; Earleywine, M.; Wood, E.; Pesaran, A.

2012-10-01T23:59:59.000Z

29

Light-Duty Drive Cycle Simulations of Diesel Engine-Out Exhaust Properties for an RCCI-Enabled Vehicle  

SciTech Connect

In-cylinder blending of gasoline and diesel fuels to achieve low-temperature reactivity controlled compression ignition (RCCI) can reduce NOx and PM emissions while maintaining or improving brake thermal efficiency compared to conventional diesel combustion (CDC). Moreover, the dual-fueling RCCI is able to achieve these benefits by tailoring combustion reactivity over a wider range of engine operation than is possible with a single fuel. However, the currently demonstrated range of stable RCCI combustion just covers a portion of the engine speed-load range required in several light-duty drive cycles. This means that engines must switch from RCCI to CDC when speed and load fall outside of the stable RCCI range. In this study we investigated the impact of RCCI as it has recently been demonstrated on practical engine-out exhaust temperature and emissions by simulating a multi-mode RCCI-enabled vehicle operating over two urban and two highway driving cycles. To implement our simulations, we employed experimental engine maps for a multi-mode RCCI/CDC engine combined with a standard mid-size, automatic transmission, passenger vehicle in the Autonomie vehicle simulation platform. Our results include both detailed transient and cycle-averaged engine exhaust temperature and emissions for each case, and we note the potential implications of the modified exhaust properties on catalytic emissions control and utilization of waste heat recovery on future RCCI-enabled vehicles.

Gao, Zhiming [ORNL; Curran, Scott [ORNL; Daw, C Stuart [ORNL; Wagner, Robert M [ORNL

2013-01-01T23:59:59.000Z

30

Cycling Operation of Fossil Plants: Volume 2: Converting PG&E's Moss Landing 6 & 7 to Cycling Duty  

Science Conference Proceedings (OSTI)

This report is part of an ongoing EPRI effort to help member utilities address the key technical challenges of implementing a successful cycling program. It details the engineering and economic decisions behind reducing the minimum load of a 750 MW supercritical unit from 240 MW to 50 MW.

1991-05-01T23:59:59.000Z

31

Changes related to "A Flashing Binary Combined Cycle For Geothermal...  

Open Energy Info (EERE)

Twitter icon Changes related to "A Flashing Binary Combined Cycle For Geothermal Power Generation" A Flashing Binary Combined Cycle For Geothermal Power Generation...

32

NREL: U.S. Life Cycle Inventory Database - Related Links  

NLE Websites -- All DOE Office Websites (Extended Search)

Related Links Related Links Below are links to life cycle inventory (LCI) databases, life cycle assessment (LCA) information, LCA tools, research institutes utilizing LCA, labeling initiatives and organizations, international LCA initiatives, LCA online forums. Life Cycle Inventory Data Ecoinvent: Swiss Centre for Life Cycle Inventories IVAM LCA Data 4: Dutch LCA Database KITECH (Korea Institute of Industrial Technology): Korea National Cleaner Production Center LCI Database Life Cycle Assessment Information IERE (The Institute for Environmental Research and Education): The American Center for Life Cycle Assessment SETAC (Society of Environmental Toxicology and Chemistry): SETAC Life Cycle Assessment SPOLD (Society for Promotion of Life-cycle Assessment Development): 2.0 LCA Consultants homepage

33

Drive cycle analysis of butanol/diesel blends in a light-duty vehicle.  

Science Conference Proceedings (OSTI)

The potential exists to displace a portion of the petroleum diesel demand with butanol and positively impact engine-out particulate matter. As a preliminary investigation, 20% and 40% by volume blends of butanol with ultra low sulfur diesel fuel were operated in a 1999 Mercedes Benz C220 turbo diesel vehicle (Euro III compliant). Cold and hot start urban as well as highway drive cycle tests were performed for the two blends of butanol and compared to diesel fuel. In addition, 35 MPH and 55 MPH steady-state tests were conducted under varying road loads for the two fuel blends. Exhaust gas emissions, fuel consumption, and intake and exhaust temperatures were acquired for each test condition. Filter smoke numbers were also acquired during the steady-state tests.

Miers, S. A.; Carlson, R. W.; McConnell, S. S.; Ng, H. K.; Wallner, T.; LeFeber, J.; Energy Systems; Esper Images Video & Multimedia

2008-10-01T23:59:59.000Z

34

Program Record 13006 (Offices of Vehicle Technologies and Fuel Cell Technologies: Life-Cycle Costs of Mid-Size Light-Duty Vehicles  

NLE Websites -- All DOE Office Websites (Extended Search)

Program Record (Offices of Vehicle Technologies & Fuel Cell Program Record (Offices of Vehicle Technologies & Fuel Cell Technologies) Record #: 13006 Date: April 24, 2013 Title: Life-cycle Costs of Mid-Size Light-Duty Vehicles Originator: Tien Nguyen & Jake Ward Approved by: Sunita Satyapal Pat Davis Date: April 25, 2013 Items: DOE is pursuing a portfolio of technologies with the potential to significantly reduce greenhouse gases (GHG) emissions and petroleum consumption while being cost-effective. This record documents the assumptions and results of analyses conducted to estimate the life-cycle costs resulting from several fuel/vehicle pathways, for a future mid-size car. The results are summarized graphically in the following figure. Costs of Operation for Future Mid-Size Car

35

Light Duty Truck Aftertreatment - Experience and Challenges  

DOE Green Energy (OSTI)

Detroit Diesel's test experience on light duty truck PM aftertreatment technology development will be presented. The Tier-II extremely low emissions standards combined with the light-duty test cycle impose a significant challenge for the development of production-viable emissions technologies. A robust general path to achieve these emissions targets will be outlined.

Redon, Fabien

2000-08-20T23:59:59.000Z

36

Changes related to "Carbon Cycle Engineering" | Open Energy Informatio...  

Open Energy Info (EERE)

Retrieved from "http:en.openei.orgwikiSpecial:RecentChangesLinkedCarbonCycleEngineering" Atom Special pages About us Disclaimers Energy blogs Developer services...

37

Semantic modelling of dependency relations between life cycle analysis processes  

Science Conference Proceedings (OSTI)

Life Cycle Assessment provides a well-accepted methodology for modelling environmental impacts of human activities. This methodology relies on the decomposition of a studied system into interdependent processes. Several organisations provide processes ... Keywords: environmental information management, life cycle assessment, ontology

Benjamin Bertin; Marian Scuturici; Jean-Marie Pinon; Emmanuel Risler

2012-09-01T23:59:59.000Z

38

Accretion-of-Duties  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

JAN 0 7 2010 JAN 0 7 2010 MEMORANDUM FOR HUMAN RESOURCES DIRECTORS FROM: SARAH J. B -&- LLA, DIRECTOR SUBJECT: GUIDANCE MEMORANDUM #5: Accretion-of-Duties Promotions This memorandum provides policy guidance on how to consistently address accretion-of-duties promotions within the Department and is effective immediately. The Department of Energy's Merit Promotion Plan permits the use of accretion-of-duties promotions as an exception to competitive procedures. The ability to effect noncompetitive promotions based on accretion-of-duties is an important stafEing tool available to supervisors. Whenever possible, supervisors and servicing Human Resources Offices will ensure that a reasonable and accurate career ladder is established before a position is filled. Following good

39

Light Duty Vehicle Pathways  

NLE Websites -- All DOE Office Websites (Extended Search)

in 2030 0 5 10 15 20 25 30 Million BarrelsDay IMPORTS DOMESTIC OIL SUPPLY OIL DEMAND ELECTRICITY RES. & COM. INDUSTRY MISC. TRANSPORT AIR TRUCKS LIGHT DUTY VEHICLES ETHANOL...

40

Proliferation resistance for fast reactors and related fuel cycles: issues and impacts  

Science Conference Proceedings (OSTI)

The prospects for a dramatic growth in nuclear power may depend to a significant degree on the effectiveness of, and the resources devoted to, plans to develop and implement technologies and approaches that strengthen proliferation resistance and nuclear materials accountability. The challenges for fast reactors and related fuel cycles are especially critical. They are being explored in the Generation IV Tnternational Forum (GIF) and the Tnternational Atomic Energy Agency's (IAEA's) International Project on Innovative Nuclear Reactors and Fuel Cycles (INPRO) initiative, as well as by many states that are looking to these systems for the efficient lise of uranium resources and long-term energy security. How do any proliferation risks they may pose compare to other reactors, both existing and under development, and their fuel cycles? Can they be designed with intrinsic (technological) features to make these systems more proliferation resistant? What roles can extrinsic (institutional) features play in proliferation resistance? What are the anticipated safeguards requirements, and will new technologies and approaches need to be developed? How can safeguards be facilitated by the design process? These and other questions require a rethinking of proliferation resistance and the prospects for new technologies and other intrinsic and extrinsic features being developed that are responsive to specific issues for fast reactors and related fuel cycles and to the broader threat environment in which these systems will have to operate. There are no technologies that can wholly eliminate the risk of proliferation by a determined state, but technology and design can playa role in reducing state threats and perhaps in eliminating non-state threats. There will be a significant role for extrinsic factors, especially the various measures - from safeguards and physical protection to export controls - embodied in the international nuclear nonproliferation regime. This paper will offer an assessment of the issues surrounding, and the prospects for, efforts to develop proliferation resistance for fast reactors and related fuel cycles in the context of a nuclear renaissance. The focus of the analysis is on fast reactors.

Pilat, Joseph F [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Light Duty Efficient, Clean Combustion  

SciTech Connect

Cummins has successfully completed the Light Duty Efficient Clean Combustion (LDECC) cooperative program with DoE. This program was established in 2007 in support of the Department of Energy's Vehicles Technologies Advanced Combustion and Emissions Control initiative to remove critical barriers to the commercialization of advanced, high efficiency, emissions compliant internal combustion (IC) engines for light duty vehicles. Work in this area expanded the fundamental knowledge of engine combustion to new regimes and advanced the knowledge of fuel requirements for these diesel engines to realize their full potential. All of the following objectives were met with fuel efficiency improvement targets exceeded: (1) Improve light duty vehicle (5000 lb. test weight) fuel efficiency by 10.5% over today's state-of-the-art diesel engine on the FTP city drive cycle; (2) Develop and design an advanced combustion system plus aftertreatment system that synergistically meets Tier 2 Bin 5 NOx and PM emissions standards while demonstrating the efficiency improvements; (3) Maintain power density comparable to that of current conventional engines for the applicable vehicle class; and (4) Evaluate different fuel components and ensure combustion system compatibility with commercially available biofuels. Key accomplishments include: (1) A 25% improvement in fuel efficiency was achieved with the advanced LDECC engine equipped with a novel SCR aftertreatment system compared to the 10.5% target; (2) An 11% improvement in fuel efficiency was achieved with the advanced LDECC engine and no NOx aftertreamtent system; (3) Tier 2 Bin 5 and SFTP II emissions regulations were met with the advanced LDECC engine equipped with a novel SCR aftertreatment system; (4) Tier 2 Bin 5 emissions regulations were met with the advanced LDECC engine and no NOx aftertreatment, but SFTP II emissions regulations were not met for the US06 test cycle - Additional technical barriers exist for the no NOx aftertreatment engine; (5) Emissions and efficiency targets were reached with the use of biodiesel. A variety of biofuel feedstocks (soy, rapeseed, etc.) was investigated; (6) The advanced LDECC engine with low temperature combustion was compatible with commercially available biofuels as evaluated by engine performance testing and not durability testing; (7) The advanced LDECC engine equipped with a novel SCR aftertreatment system is the engine system architecture that is being further developed by the Cummins product development organization. Cost reduction and system robustness activities have been identified for future deployment; (8) The new engine and aftertreatment component technologies are being developed by the Cummins Component Business units (e.g. fuel system, turbomachinery, aftertreatment, electronics, etc.) to ensure commercial viability and deployment; (9) Cummins has demonstrated that the technologies developed for this program are scalable across the complete light duty engine product offerings (2.8L to 6.7L engines); and (10) Key subsystems developed include - sequential two stage turbo, combustions system for low temperature combustion, novel SCR aftertreatment system with feedback control, and high pressure common rail fuel system. An important element of the success of this project was leveraging Cummins engine component technologies. Innovation in component technology coupled with system integration is enabling Cummins to move forward with the development of high efficiency clean diesel products with a long term goal of reaching a 40% improvement in thermal efficiency for the engine plus aftertreatment system. The 40% improvement is in-line with the current light duty vehicle efficiency targets set by the 2010 DoE Vehicle Technologies MYPP and supported through co-operative projects such as the Cummins Advanced Technology Powertrains for Light-Duty Vehicles (ATP-LD) started in 2010.

Donald Stanton

2010-12-31T23:59:59.000Z

42

Light Duty Efficient, Clean Combustion  

DOE Green Energy (OSTI)

Cummins has successfully completed the Light Duty Efficient Clean Combustion (LDECC) cooperative program with DoE. This program was established in 2007 in support of the Department of Energy's Vehicles Technologies Advanced Combustion and Emissions Control initiative to remove critical barriers to the commercialization of advanced, high efficiency, emissions compliant internal combustion (IC) engines for light duty vehicles. Work in this area expanded the fundamental knowledge of engine combustion to new regimes and advanced the knowledge of fuel requirements for these diesel engines to realize their full potential. All of the following objectives were met with fuel efficiency improvement targets exceeded: (1) Improve light duty vehicle (5000 lb. test weight) fuel efficiency by 10.5% over today's state-of-the-art diesel engine on the FTP city drive cycle; (2) Develop and design an advanced combustion system plus aftertreatment system that synergistically meets Tier 2 Bin 5 NOx and PM emissions standards while demonstrating the efficiency improvements; (3) Maintain power density comparable to that of current conventional engines for the applicable vehicle class; and (4) Evaluate different fuel components and ensure combustion system compatibility with commercially available biofuels. Key accomplishments include: (1) A 25% improvement in fuel efficiency was achieved with the advanced LDECC engine equipped with a novel SCR aftertreatment system compared to the 10.5% target; (2) An 11% improvement in fuel efficiency was achieved with the advanced LDECC engine and no NOx aftertreamtent system; (3) Tier 2 Bin 5 and SFTP II emissions regulations were met with the advanced LDECC engine equipped with a novel SCR aftertreatment system; (4) Tier 2 Bin 5 emissions regulations were met with the advanced LDECC engine and no NOx aftertreatment, but SFTP II emissions regulations were not met for the US06 test cycle - Additional technical barriers exist for the no NOx aftertreatment engine; (5) Emissions and efficiency targets were reached with the use of biodiesel. A variety of biofuel feedstocks (soy, rapeseed, etc.) was investigated; (6) The advanced LDECC engine with low temperature combustion was compatible with commercially available biofuels as evaluated by engine performance testing and not durability testing; (7) The advanced LDECC engine equipped with a novel SCR aftertreatment system is the engine system architecture that is being further developed by the Cummins product development organization. Cost reduction and system robustness activities have been identified for future deployment; (8) The new engine and aftertreatment component technologies are being developed by the Cummins Component Business units (e.g. fuel system, turbomachinery, aftertreatment, electronics, etc.) to ensure commercial viability and deployment; (9) Cummins has demonstrated that the technologies developed for this program are scalable across the complete light duty engine product offerings (2.8L to 6.7L engines); and (10) Key subsystems developed include - sequential two stage turbo, combustions system for low temperature combustion, novel SCR aftertreatment system with feedback control, and high pressure common rail fuel system. An important element of the success of this project was leveraging Cummins engine component technologies. Innovation in component technology coupled with system integration is enabling Cummins to move forward with the development of high efficiency clean diesel products with a long term goal of reaching a 40% improvement in thermal efficiency for the engine plus aftertreatment system. The 40% improvement is in-line with the current light duty vehicle efficiency targets set by the 2010 DoE Vehicle Technologies MYPP and supported through co-operative projects such as the Cummins Advanced Technology Powertrains for Light-Duty Vehicles (ATP-LD) started in 2010.

Donald Stanton

2010-12-31T23:59:59.000Z

43

Light Duty Efficient, Clean Combustion  

SciTech Connect

Cummins has successfully completed the Light Duty Efficient Clean Combustion (LDECC) cooperative program with DoE. This program was established in 2007 in support of the Department of Energy’s Vehicles Technologies Advanced Combustion and Emissions Control initiative to remove critical barriers to the commercialization of advanced, high efficiency, emissions compliant internal combustion (IC) engines for light duty vehicles. Work in this area expanded the fundamental knowledge of engine combustion to new regimes and advanced the knowledge of fuel requirements for these diesel engines to realize their full potential. All of the following objectives were met with fuel efficiency improvement targets exceeded: 1. Improve light duty vehicle (5000 lb. test weight) fuel efficiency by 10.5% over today’s state-ofthe- art diesel engine on the FTP city drive cycle 2. Develop & design an advanced combustion system plus aftertreatment system that synergistically meets Tier 2 Bin 5 NOx and PM emissions standards while demonstrating the efficiency improvements. 3. Maintain power density comparable to that of current conventional engines for the applicable vehicle class. 4. Evaluate different fuel components and ensure combustion system compatibility with commercially available biofuels. Key accomplishments include: ? A 25% improvement in fuel efficiency was achieved with the advanced LDECC engine equipped with a novel SCR aftertreatment system compared to the 10.5% target ? An 11% improvement in fuel efficiency was achieved with the advanced LDECC engine and no NOx aftertreamtent system ? Tier 2 Bin 5 and SFTP II emissions regulations were met with the advanced LDECC engine equipped with a novel SCR aftertreatment system ? Tier 2 Bin 5 emissions regulations were met with the advanced LDECC engine and no NOx aftertreatment, but SFTP II emissions regulations were not met for the US06 test cycle – Additional technical barriers exist for the no NOx aftertreatment engine ? Emissions and efficiency targets were reached with the use of biodiesel. A variety of biofuel feedstocks (soy, rapeseed, etc.) was investigated. ? The advanced LDECC engine with low temperature combustion was compatible with commercially available biofuels as evaluated by engine performance testing and not durability testing. ? The advanced LDECC engine equipped with a novel SCR aftertreatment system is the engine system architecture that is being further developed by the Cummins product development organization. Cost reduction and system robustness activities have been identified for future deployment. ? The new engine and aftertreatment component technologies are being developed by the Cummins Component Business units (e.g. fuel system, turbomachinery, aftertreatment, electronics, etc.) to ensure commercial viability and deployment ? Cummins has demonstrated that the technologies developed for this program are scalable across the complete light duty engine product offerings (2.8L to 6.7L engines) ? Key subsystems developed include – sequential two stage turbo, combustions system for low temperature combustion, novel SCR aftertreatment system with feedback control, and high pressure common rail fuel system An important element of the success of this project was leveraging Cummins engine component technologies. Innovation in component technology coupled with system integration is enabling Cummins to move forward with the development of high efficiency clean diesel products with a long term goal of reaching a 40% improvement in thermal efficiency for the engine plus aftertreatment system. The 40% improvement is in-line with the current light duty vehicle efficiency targets set by the 2010 DoE Vehicle Technologies MYPP and supported through co-operative projects such as the Cummins Advanced Technology Powertrains for Light- Duty Vehicles (ATP-LD) started in 2010.

Stanton, Donald W

2011-06-03T23:59:59.000Z

44

Assessment of Hatch 1, Cycle 21 Fuel Failures  

Science Conference Proceedings (OSTI)

On 19 October 2003, Hatch Unit One located near Baxley, Georgia, experienced six duty-related fuel failures following a control blade notching adjustment. The Hatch 1 reactor was shut down for the End of Cycle 21 refueling outage on 14 February 2004. The duty associated with the Hatch 1 notching event was analyzed in detail and found to be relatively high. Global Nuclear Fuel (GNF), in collaboration with EPRI Fuel Reliability Program and Southern Nuclear Company, sponsored a hot cell examination to estab...

2008-12-08T23:59:59.000Z

45

Nuclear fuel cycle risk assessment: survey and computer compilation of risk-related literature. [Once-through Cycle and Plutonium Recycle  

Science Conference Proceedings (OSTI)

The US Nuclear Regulatory Commission has initiated the Fuel Cycle Risk Assessment Program to provide risk assessment methods for assistance in the regulatory process for nuclear fuel cycle facilities other than reactors. Both the once-through cycle and plutonium recycle are being considered. A previous report generated by this program defines and describes fuel cycle facilities, or elements, considered in the program. This report, the second from the program, describes the survey and computer compilation of fuel cycle risk-related literature. Sources of available information on the design, safety, and risk associated with the defined set of fuel cycle elements were searched and documents obtained were catalogued and characterized with respect to fuel cycle elements and specific risk/safety information. Both US and foreign surveys were conducted. Battelle's computer-based BASIS information management system was used to facilitate the establishment of the literature compilation. A complete listing of the literature compilation and several useful indexes are included. Future updates of the literature compilation will be published periodically. 760 annotated citations are included.

Yates, K.R.; Schreiber, A.M.; Rudolph, A.W.

1982-10-01T23:59:59.000Z

46

Model-Based Analysis of Electric Drive Options for Medium-Duty Parcel Delivery Vehicles: Preprint  

DOE Green Energy (OSTI)

Medium-duty vehicles are used in a broad array of fleet applications, including parcel delivery. These vehicles are excellent candidates for electric drive applications due to their transient-intensive duty cycles, operation in densely populated areas, and relatively high fuel consumption and emissions. The National Renewable Energy Laboratory (NREL) conducted a robust assessment of parcel delivery routes and completed a model-based techno-economic analysis of hybrid electric vehicle (HEV) and plug-in hybrid electric vehicle configurations. First, NREL characterized parcel delivery vehicle usage patterns, most notably daily distance driven and drive cycle intensity. Second, drive-cycle analysis results framed the selection of drive cycles used to test a parcel delivery HEV on a chassis dynamometer. Next, measured fuel consumption results were used to validate simulated fuel consumption values derived from a dynamic model of the parcel delivery vehicle. Finally, NREL swept a matrix of 120 component size, usage, and cost combinations to assess impacts on fuel consumption and vehicle cost. The results illustrated the dependency of component sizing on drive-cycle intensity and daily distance driven and may allow parcel delivery fleets to match the most appropriate electric drive vehicle to their fleet usage profile.

Barnitt, R. A.; Brooker, A. D.; Ramroth, L.

2010-12-01T23:59:59.000Z

47

Current DUTY STATEMENT  

E-Print Network (OSTI)

Office of Chief Counsel Date Prepared June 15, 2009 Division KEY: (E) IS ESSENTIAL, (M) IS MARGINAL Under. WORKING CONDITIONS: Work is performed indoors in an office setting and occasionally in facilities near THE ASSISTANCE OF A REASONABLE ACCACCOMMODATION, THE ESSENTIAL JOB DUTIES OF THIS POSITION. Signatures Name

48

Poolside Examination Data on High-Duty BWR Fuel Exposed to 52 GWd/MTU:  

Science Conference Proceedings (OSTI)

Poolside examinations conducted on boiling water reactor (BWR) fuel exposed to 52 GWd/MTU under high-duty operating conditions are providing data needed to justify extending allowable burnup limits. The good condition of the examined fuel assemblies allowed four of them to be reinserted for an additional 2-year duty cycle to provide data at even higher burnup levels.

1999-09-07T23:59:59.000Z

49

Heavy Truck Duty Cycle (HTDC) Project The Heavy Truck Duty Cycle (HTDC)  

E-Print Network (OSTI)

is sponsored by the US Department of Energy's (DOE's) Office of FreedomCar and Vehicle Technologies with standard dual tires. The trailers are of various manufacturers and are 53 foot dry-box vans. Five-trailer (Truck#1) had its engine running while the vehicle was not moving. Over a period of one year

50

Statistical Characterization of School Bus Drive Cycles Collected via Onboard Logging Systems  

Science Conference Proceedings (OSTI)

In an effort to characterize the dynamics typical of school bus operation, National Renewable Energy Laboratory (NREL) researchers set out to gather in-use duty cycle data from school bus fleets operating across the country. Employing a combination of Isaac Instruments GPS/CAN data loggers in conjunction with existing onboard telemetric systems resulted in the capture of operating information for more than 200 individual vehicles in three geographically unique domestic locations. In total, over 1,500 individual operational route shifts from Washington, New York, and Colorado were collected. Upon completing the collection of in-use field data using either NREL-installed data acquisition devices or existing onboard telemetry systems, large-scale duty-cycle statistical analyses were performed to examine underlying vehicle dynamics trends within the data and to explore vehicle operation variations between fleet locations. Based on the results of these analyses, high, low, and average vehicle dynamics requirements were determined, resulting in the selection of representative standard chassis dynamometer test cycles for each condition. In this paper, the methodology and accompanying results of the large-scale duty-cycle statistical analysis are presented, including graphical and tabular representations of a number of relationships between key duty-cycle metrics observed within the larger data set. In addition to presenting the results of this analysis, conclusions are drawn and presented regarding potential applications of advanced vehicle technology as it relates specifically to school buses.

Duran, A.; Walkowicz, K.

2013-10-01T23:59:59.000Z

51

STATE OF CALIFORNIA DUTY STATEMENT  

E-Print Network (OSTI)

Prepared: September 9, 2013 Division: Executive KEY: (E) IS ESSENTIAL, (M) IS MARGINAL Under general in an office setting and occasionally in public facilities near proposed power plant sites. DUTIES, The Essential Job Duties Of This Position Employee Date Supervisor Date #12;

52

Development of a direct-injected natural gas engine system for heavy-duty vehicles: Final report phase 1  

DOE Green Energy (OSTI)

The transportation sector accounts for approximately 65% of US petroleum consumption. Consumption for light-duty vehicles has stabilized in the last 10--15 years; however, consumption in the heavy-duty sector has continued to increase. For various reasons, the US must reduce its dependence on petroleum. One significant way is to substitute alternative fuels (natural gas, propane, alcohols, and others) in place of petroleum fuels in heavy-duty applications. Most alternative fuels have the additional benefit of reduced exhaust emissions relative to petroleum fuels, thus providing a cleaner environment. The best long-term technology for heavy-duty alternative fuel engines is the 4-stroke cycle, direct injected (DI) engine using a single fuel. This DI, single fuel approach maximizes the substitution of alternative fuel for diesel and retains the thermal efficiency and power density of the diesel engine. This report summarizes the results of the first year (Phase 1) of this contract. Phase 1 focused on developing a 4-stroke cycle, DI single fuel, alternative fuel technology that will duplicate or exceed diesel power density and thermal efficiency, while having exhaust emissions equal to or less than the diesel. Although the work is currently on a 3500 Series DING engine, the work is viewed as a basic technology development that can be applied to any engine. Phase 1 concentrated on DING engine component durability, exhaust emissions, and fuel handling system durability. Task 1 focused on identifying primary areas (e.g., ignition assist and gas injector systems) for future durability testing. In Task 2, eight mode-cycle-averaged NO{sub x} emissions were reduced from 11.8 gm/hp-hr (baseline conditions) to 2.5 gm/hp-hr (modified conditions) on a 3501 DING engine. In Task 3, a state-of-the-art fuel handling system was identified.

NONE

2000-03-02T23:59:59.000Z

53

Investigating potential light-duty efficiency improvements through simulation of turbo-compounding and waste-heat recovery systems  

Science Conference Proceedings (OSTI)

Modern diesel engines used in light-duty transportation applications have peak brake thermal efficiencies in the range of 40-42% for high-load operation with substantially lower efficiencies at realistic road-load conditions. Thermodynamic energy and exergy analysis reveals that the largest losses from these engines are due to combustion irreversibility and heat loss to the coolant, through the exhaust, and by direct convection and radiation to the environment. Substantial improvement in overall engine efficiency requires reducing or recovering these losses. Unfortunately, much of the heat transfer either occurs at relatively low temperatures resulting in large entropy generation (such as in the air-charge cooler), is transferred to low-exergy flow streams (such as the oil and engine coolant), or is radiated or convected directly to the environment. While there are significant opportunities for recovery from the exhaust and EGR cooler for heavy-duty applications, achieving similar benefits for light-duty applications is complicated by transient, low-load operation at typical driving conditions and competition with the turbocharger and aftertreatment system for the limited thermal resources. We have developed an organic Rankine cycle model using GT-Suite to investigate the potential for efficiency improvement through waste-heat recovery from the exhaust and EGR cooler of a light-duty diesel engine. The model is used to examine the effects of efficiency-improvement strategies such as cylinder deactivation, use of advanced materials and improved insulation to limit ambient heat loss, and turbo-compounding on the steady-state performance of the ORC system and the availability of thermal energy for downstream aftertreatment systems. Results from transient drive-cycle simulations are also presented, and we discuss strategies to address operational difficulties associated with transient drive cycles and balancing the thermal requirements of waste-heat recovery, turbocharging or turbo-compounding, and exhaust aftertreatment.

Edwards, Kevin Dean [ORNL; Wagner, Robert M [ORNL; Briggs, Thomas E [ORNL

2010-01-01T23:59:59.000Z

54

Relative performance of supercritical binary geothermal power cycles with in-tube condensors in different orientations  

DOE Green Energy (OSTI)

The Heat Cycle Research Program, which is conducted for the Department of Energy, has as its objective the development of the technology for effecting the improved utilization of moderate temperature geothermal resources. The current testing involves the investigation of the performance of binary power cycles utilizing mixtures of non-adjacent hydrocarbons as the working fluids, with supercritical vaporization and in-tube condensation. The utilization of these concepts will improve the net geofluid effectiveness (net plant output per unit mass of geofluid) about 20% over that of a conventional binary power plant. The major prerequisite for this improvement is the achievement of integral, countercurrent condensation. Results are presented for testing of the performance of the condenser at different tube inclinations. The performance in the vertical orientation is better than in either the horizontal or inclined orientations. 7 refs., 8 figs.

Bliem, C.J.; Mines, G.L.

1989-01-01T23:59:59.000Z

55

USA National Phenology Network: Plant and Animal Life-Cycle Data Related to Climate Change  

DOE Data Explorer (OSTI)

Phenology refers to recurring plant and animal life cycle stages, such as leafing and flowering, maturation of agricultural plants, emergence of insects, and migration of birds. It is also the study of these recurring plant and animal life cycle stages, especially their timing and relationships with weather and climate. Phenology affects nearly all aspects of the environment, including the abundance and diversity of organisms, their interactions with one another, their functions in food webs, and their seasonable behavior, and global-scale cycles of water, carbon, and other chemical elements. Phenology records can help us understand plant and animal responses to climate change; it is a key indicator. The USA-NPN brings together citizen scientists, government agencies, non-profit groups, educators, and students of all ages to monitor the impacts of climate change on plants and animals in the United States. The network harnesses the power of people and the Internet to collect and share information, providing researchers with far more data than they could collect alone.[Extracts copied from the USA-NPN home page and from http://www.usanpn.org/about].

56

HEAVY-DUTY VEHICLE IN USE EMISSION PERFORMANCE  

DOE Green Energy (OSTI)

Engines for heavy-duty vehicles are emission certified by running engines according to specified load pattern or duty cycle. In the US, the US Heavy-Duty Transient cycle has been in use already for a number of years, and Europe is, according to the requirements of the Directive 1999/96/EC gradually switching to transient-type testing. Evaluating the in-use emission performance of heavy-duty vehicles presents a problem. Taking engines out of vehicles for engine dynamometer testing is difficult and costly. In addition, engine dynamometer testing does not take into account the properties of the vehicle itself (i.e. mass, transmission etc.). It is also debatable, how well the standardized duty cycles reflect real-life -driving patterns. VTT Processes has recently commissioned a new emission laboratory for heavy-duty vehicles. The facility comprises both engine test stand and a fully transient heavy-duty chassis dynamometer. The roller diameter of the dynamometer is 2.5 meters. Regulated emissions are measured using a full-flow CVS system. The HD vehicle chassis dynamometer measurements (emissions, fuel consumption) has been granted accreditation by the Centre of Metrology and Accreditation (MIKES, Finland). A national program to generate emission data on buses has been set up for the years 2002-2004. The target is to generate emission factors for some 50 different buses representing different degree of sophistication (Euro 1 to Euro5/EEV, with and without exhaust gas aftertreatment), different fuel technologies (diesel, natural gas) and different ages (the effect of aging). The work is funded by the Metropolitan Council of Helsinki, Helsinki City Transport, The Ministry of Transport and Communications Finland and the gas company Gasum Oy. The International Association for Natural Gas Vehicles (IANGV) has opted to buy into the project. For IANGV, VTT will deliver comprehensive emission data (including particle size distribution and chemical and biological characterization of particles) for up-to-date diesel and natural gas vehicles. The paper describes the methodology used for the measurements on buses, the test matrix and some preliminary emission data on both regulated and unregulated emissions.

Nylund, N; Ikonen, M; Laurikko, J

2003-08-24T23:59:59.000Z

57

Active period Sleep period Active period Sleep period Fig. 1. Sleep-awake cycles of SMAC.  

E-Print Network (OSTI)

A cycle Active period Sleep period Active period Sleep period SYNC usage DATA usage time Fig. 1 Yang and Wendi Heinzelman Dept. of Electrical and Computer Engineering, University of Rochester duty cycles. Since a smaller duty cycle leads to a longer network lifetime but lower throughput

Heinzelman, Wendi

58

Overcoming the Range Limitation of Medium-Duty Battery Electric Vehicles through the use of Hydrogen Fuel-Cells  

DOE Green Energy (OSTI)

Battery electric vehicles possess great potential for decreasing lifecycle costs in medium-duty applications, a market segment currently dominated by internal combustion technology. Characterized by frequent repetition of similar routes and daily return to a central depot, medium-duty vocations are well positioned to leverage the low operating costs of battery electric vehicles. Unfortunately, the range limitation of commercially available battery electric vehicles acts as a barrier to widespread adoption. This paper describes the National Renewable Energy Laboratory's collaboration with the U.S. Department of Energy and industry partners to analyze the use of small hydrogen fuel-cell stacks to extend the range of battery electric vehicles as a means of improving utility, and presumably, increasing market adoption. This analysis employs real-world vocational data and near-term economic assumptions to (1) identify optimal component configurations for minimizing lifecycle costs, (2) benchmark economic performance relative to both battery electric and conventional powertrains, and (3) understand how the optimal design and its competitiveness change with respect to duty cycle and economic climate. It is found that small fuel-cell power units provide extended range at significantly lower capital and lifecycle costs than additional battery capacity alone. And while fuel-cell range-extended vehicles are not deemed economically competitive with conventional vehicles given present-day economic conditions, this paper identifies potential future scenarios where cost equivalency is achieved.

Wood, E.; Wang, L.; Gonder, J.; Ulsh, M.

2013-10-01T23:59:59.000Z

59

STATE OF CALIFORNIA DUTY STATEMENT  

E-Print Network (OSTI)

that arise from market and legislative developments, technical analyses conducted to inform the Energy Commission and coordination with other agencies on transportation energy topics, analysis and impactsSTATE OF CALIFORNIA DUTY STATEMENT CEC-004 (Revised 04/07) CALIFORNIA ENERGY COMMISSION VACANT

60

STATE OF CALIFORNIA DUTY STATEMENT  

E-Print Network (OSTI)

STATE OF CALIFORNIA DUTY STATEMENT CEC-004 (Revised 04/07) CALIFORNIA ENERGY COMMISSION consumption by specific building and industrial types within in various California climate zones historic and forecast energy consumption information for various California regions for use in models

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

STATE OF CALIFORNIA DUTY STATEMENT  

E-Print Network (OSTI)

STATE OF CALIFORNIA DUTY STATEMENT CEC-004 (Revised 04/07) CALIFORNIA ENERGY COMMISSION impacts of electricity supply in California. In this capacity, the incumbent will serve as a prime subject to inform California energy policies as formulated in the Integrated Energy Policy Report. This work

62

DUTY STATEMENT CLASSIFICATION  

E-Print Network (OSTI)

, 2012 OFFICE/UNIT: Environmental/Biology KEY: (E) IS AN ESSENTIAL AND (M) IS A MARGINAL FUNCTION of certification related to biological resource technical areas for power plant facilities. Review and analyze biological issues related to electrical energy production and transmission facilities, alternative energy

63

Terrestrial carbon cycle - climate relations in eight CMIP5 earth system models  

Science Conference Proceedings (OSTI)

Eight Earth System Models from the Coupled Model Intercomparison Project (CMIP5) are evaluated, focusing on both the net carbon dioxide flux and its components, and their relation with climatic variables (temperature, precipitation and soil ...

Pu Shao; Xubin Zeng; Koichi Sakaguchi; Russell K. Monson; Xiaodong Zeng

64

Light-duty diesel engine development status and engine needs  

DOE Green Energy (OSTI)

This report reviews, assesses, and summarizes the research and development status of diesel engine technology applicable to light-duty vehicles. In addition, it identifies specific basic and applied research and development needs in light-duty diesel technology and related health areas where initial or increased participation by the US Government would be desirable. The material presented in this report updates information provided in the first diesel engine status report prepared by the Aerospace Corporation for the Department of Energy in September, 1978.

Not Available

1980-08-01T23:59:59.000Z

65

Accretion-of-Duties | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Accretion-of-Duties Accretion-of-Duties Accretion-of-Duties This memorandum provides policy guidance on how to consistently address accretion-of-duties promotions within the Department and is effective immediately. The Department of Energy's Merit Promotion Plan permits the use of accretion-of-duties promotions as an exception to competitive procedures. The ability to effect noncompetitive promotions based on accretion-of-duties is an important staffing tool available to supervisors. Whenever possible, supervisors and servicing Human Resources Offices will ensure that a reasonable and accurate career ladder is established before a position is filled. Following good management practices, supervisors should be aware of the duties assigned or assumed by their staff, and exercise

66

DUTY STATEMENT CLASSIFICATION  

E-Print Network (OSTI)

, 2012 OFFICE/UNIT: Environmental/Biology KEY: (E) IS AN ESSENTIAL AND (M) IS A MARGINAL FUNCTION biological resource issues related to electrical energy production and transmission facilities, alternative and policies pertinent to biological resource aspects of proposed energy facilities and Commission programs. (M

67

DUTY STATEMENT Classification  

E-Print Network (OSTI)

; and calculating and estimating energy savings, project economics and environmental benefits (e.g., greenhouse gas and administers electricity- and natural gas-based energy research, development and demonstration (RD&D) efforts related to residential and commercial buildings with the goal of advancing science and technologies

68

Experimental work related to two bismuth sulfate cycles and their possible improvement. Outline of a possible antimonyl sulfate cycle with separate evolution of sulfur dioxide and oxygen  

DOE Green Energy (OSTI)

Two bismuth sulfate cycles are made possible by the stepwise decomposition of the sulfate-oxysulfate system. Omitting statement of the steps for decomposition of SO/sub 3/ and the electrochemical formation of H/sub 2/ and H/sub 2/SO/sub 4/ from SO/sub 2/ and H/sub 2/O, the key reactions are: Cycle I - Bi/sub 2/(SO/sub 4/)/sub 3/ = Bi/sub 2/O/sub 2/ /sub 3/(SO/sub 4/)/sub 0/ /sub 7/ + 2.3 SO/sub 3/; Bi/sub 2/O/sub 2/ /sub 3/(SO/sub 4/)/sub 0/ /sub 7/ + 2.3 H/sub 2/SO/sub 4/ = Bi/sub 2/(SO/sub 4/)/sub 3/ + 2.3 H/sub 2/O; Cycle II - Bi/sub 2/O(SO/sub 4/)/sub 2/ = Bi/sub 2/O/sub 2/ /sub 3/(SO/sub 4/)/sub 0/ /sub 7/ + 1.3 SO/sub 3/; Bi/sub 2/O/sub 2/ /sub 3/(SO/sub 4/)/sub 0/ /sub 7/ + 1.3 H/sub 2/SO/sub 4/ = Bi/sub 2/O(SO/sub 4/)/sub 2/ + 1.3 H/sub 2/O. Cycle I proceeds through the intermediate oxysulfates Bi/sub 2/O(SO/sub 4/)/sub 2/ and Bi/sub 2/O/sub 2/SO/sub 4/ and Cycle II through Bi/sub 2/O/sub 2/SO/sub 4/. Cycle I has the advantage of generating 2.3 moles of H/sub 2/ per mole of Bi/sub 2/O/sub 3/, compared with 1.3 for Cycle II. Published work on the Bi/sub 2/O/sub 3/-SO/sub 3/-H/sub 2/O system shows that Bi/sub 2/(SO/sub 4/)/sub 3/ is the stable solid in contact with H/sub 2/SO/sub 4/ solutions above 52.7 wt%, so that acid of at least this strength would have to be used in Cycle I. Concentrations between about 3 wt% and 52.7 wt% could be used for Cycle II. The efficiency for electrochemical formation of H/sub 2/SO/sub 4/ and H/sub 2/ seems at present to be a maximum at around 30 wt% H/sub 2/SO/sub 4/. Some thermodynamic data obtained for the decomposition reactions are presented. A possible improvement in these cycles is also discussed which may provide a solution to a problem of sorption of H/sub 2/SO/sub 4/ solution by the solids and might allow use of a more dilute acid than in Cycle I above. A brief discussion on the possible simplification of the SO/sub 3/-SO/sub 2/-O/sub 2/ separation problem with a sulfuric acid-antimonyl sulfate hybrid cycle is presented. The principal reactions are: (1) Sb/sub 2/O/sub 2/SO/sub 4/ = Sb/sub 2/O/sub 4/ + SO/sub 2/ at 900 K; (2) Sb/sub 2/O/sub 4/ = Sb/sub 2/O/sub 3/ + 1/2 O/sub 2/ at 1300 K; (3) Sb/sub 2/O/sub 3/ + H/sub 2/SO/sub 4/ = Sb/sub 2/O/sub 2/SO/sub 4/ + H/sub 2/O.

Jones, W.M.

1981-01-01T23:59:59.000Z

69

light-duty | OpenEI  

Open Energy Info (EERE)

Login | Sign Up Wiki Apps Datasets Browse Upload data GDR Community Linked Data Search Share this page on Facebook icon Twitter icon light-duty Dataset Summary Description...

70

Characteristics of Emitted Carbonyl Compounds by using Biodiesel fuel with constant H2/O2 in a Heavy-Duty Diesel Engine.  

E-Print Network (OSTI)

??The emission tests were conducted under steady-state cycle condition in a heavy-duty diesel engine using 0% to 30% ratios of biodiesel fuel with constant H2/O2… (more)

Shih, Jia-Yu

2013-01-01T23:59:59.000Z

71

Hybrid options for light-duty vehicles.  

DOE Green Energy (OSTI)

Hybrid electric vehicles (HEVs) offer great promise in improving fuel economy. In this paper, we analyze why, how, and by how much vehicle hybridization can reduce energy consumption and improve fuel economy. Our analysis focuses on efficiency gains associated solely with vehicle hybridization. We do not consider such other measures as vehicle weight reduction or air- and tire-resistance reduction, because such measures would also benefit conventional technology vehicles. The analysis starts with understanding the energy inefficiencies of light-duty vehicles associated with different operation modes in US and Japanese urban and highway driving cycles, with the corresponding energy-saving potentials. The potential for fuel economy gains due to vehicle hybridization can be estimated almost exclusively on the basis of three elements: the reducibility of engine idling operation, the recoverability of braking energy losses, and the capability of improving engine load profiles to gain efficiency associated with specific HEV configurations and control strategies. Specifically, we evaluate the energy efficiencies and fuel economies of a baseline MY97 Corolla-like conventional vehicle (CV), a hypothetical Corolla-based minimal hybrid vehicle (MHV), and a MY98 Prius-like full hybrid vehicle (FHV). We then estimate energy benefits of both MHVs and FHVs over CVs on a performance-equivalent basis. We conclude that the energy benefits of hybridization vary not only with test cycles, but also with performance requirements. The hybrid benefits are greater for ''Corolla (high) performance-equivalent'' vehicles than for ''Prius (low) performance-equivalent'' vehicles. An increasing acceleration requirement would result in larger fuel economy benefits from vehicle hybridization.

An, F., Stodolsky, F.; Santini, D.

1999-07-19T23:59:59.000Z

72

Building aggressively duty-cycled platforms to achieve energy efficiency  

E-Print Network (OSTI)

power costs and causes wasted energy. On the other hand ifcomponents; and reduce wasted energy. The focus of thisinterface, leading to wasted energy. The bandwidth policies

Agarwal, Yuvraj

2009-01-01T23:59:59.000Z

73

Building aggressively duty-cycled platforms to achieve energy efficiency.  

E-Print Network (OSTI)

??Managing power consumption and improving energy efficiency is a key driver in the design of computing devices today. This is true for both battery powered… (more)

Agarwal, Yuvraj

2009-01-01T23:59:59.000Z

74

Building aggressively duty-cycled platforms to achieve energy efficiency  

E-Print Network (OSTI)

the active power consumption of devices (when awake) [4, 7,assumes that the power consumption of devices is fairlywhen the power consumption of devices changes dynamically

Agarwal, Yuvraj

2009-01-01T23:59:59.000Z

75

Building aggressively duty-cycled platforms to achieve energy efficiency  

E-Print Network (OSTI)

0.74 W 1.15 W 0.55 W Battery capacity 65 Wh 50 Wh 85 Wh Basethe residual capacity of the battery and then dividing theconstrained by the capacity of their battery. Recently,

Agarwal, Yuvraj

2009-01-01T23:59:59.000Z

76

Fuel Cell Technologies Office: DOE Light Duty Vehicle Workshop  

NLE Websites -- All DOE Office Websites (Extended Search)

Light Duty Vehicle Light Duty Vehicle Workshop to someone by E-mail Share Fuel Cell Technologies Office: DOE Light Duty Vehicle Workshop on Facebook Tweet about Fuel Cell Technologies Office: DOE Light Duty Vehicle Workshop on Twitter Bookmark Fuel Cell Technologies Office: DOE Light Duty Vehicle Workshop on Google Bookmark Fuel Cell Technologies Office: DOE Light Duty Vehicle Workshop on Delicious Rank Fuel Cell Technologies Office: DOE Light Duty Vehicle Workshop on Digg Find More places to share Fuel Cell Technologies Office: DOE Light Duty Vehicle Workshop on AddThis.com... Publications Program Publications Technical Publications Educational Publications Newsletter Program Presentations Multimedia Conferences & Meetings Annual Merit Review Proceedings Workshop & Meeting Proceedings

77

Energy Department Excepted Personnel, by duty station | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Energy Department Excepted Personnel, by duty station In the event of a lapse of appropriations, the Energy Department excepted personnel by duty station as of December 14, 2011....

78

Table 37. Light-Duty Vehicle Energy Consumption by Technology ...  

U.S. Energy Information Administration (EIA)

Table 37. Light-Duty Vehicle Energy Consumption by Technology Type and Fuel Type (trillion Btu) Light-Duty Consumption by Technology Type Conventional Vehicles 1/

79

Howard Gruenspecht Deputy Administrator Duties  

Gasoline and Diesel Fuel Update (EIA)

Howard Gruenspecht Howard Gruenspecht Deputy Administrator Duties Howard Gruenspecht was named Deputy Administrator of the U.S. Energy Information Administration (EIA) in March 2003. As the EIA Deputy Administrator, Howard assists the Administrator in collecting, analyzing, and disseminating independent and impartial energy information to promote sound policy-making, efficient markets, and public understanding of energy and its interaction with the econo- my and the environment. EIA provides a wide range of information and data products covering energy production, stocks, demand, imports, exports, and prices. EIA also prepares analyses and special reports on topics of current interest. Howard works closely with the Administra- tor to provide overall leadership, planning, and policy direction for the

80

Kernridge project does double duty  

SciTech Connect

The huge volume of steam that Kernridge Oil Co. generates to increase production of heavy crude oil from California's South Belridge field may do double duty. The company, a subsidiary of Shell Oil Co., is in the planning stages with a cogeneration project that would produce enough electricity to meet the electric needs of a community of more than 200,000 people. Meanwhile, Kernridge continues to exceed projections used in the acquisition assessment for the former Belridge Oil Co. properties which the Kernridge parent, Shell, bought in December 1979. The company formed Kernridge early in 1980 to operate the former Belridge properties. Since taking over, Kernridge has pursued development aggressively and has increased production to 65,000 bopd from the previous owner's 42,000 bopd.

Not Available

1981-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Large heavy-duty gas turbines for base-load power generation and heat cogeneration  

SciTech Connect

The predominant role of large gas turbines has shifted from peaking-load duty to midrange and base-load electric power generation, especially within combined-cycle plants. Such applications require heavy-duty industrial gas turbines to ensure the same high reliability and availability for continuous service as the associated steam turbines. It is also important that the gas turbines be designed for low maintenance to minimize the necessary outage times and costs for component repair and replacement. The basic design principles and applications of Model V94 gas turbines are discussed with special reference to highly reliable and economic bulk power generation.

Joyce, J.S.

1985-01-01T23:59:59.000Z

82

A CRITICAL COMMENT ON THE CLAIMED RELATION BETWEEN THE SOLAR MAXIMUM AMPLITUDE AND MAX-MAX CYCLE LENGTH  

Science Conference Proceedings (OSTI)

In this paper, we revisit a correlation between the amplitude of a solar cycle, R{sub m}, and the max-max solar cycle length two solar cycles before, P{sub max-2}, which was proposed by Du to be used as a tool for solar cycle forecasting. We vary the time interval used in the statistical analysis and also use different long-term series of sunspot numbers: International sunspot number and Group sunspot number. We show that the claimed correlation appears unstable as it depends on the time interval and the selected data series. This suggests that the relationship between the two parameters is not stationary and more complex than previously thought and, therefore, this relationship should not be used to predict solar activity.

Carrasco, V. M. S.; Vaquero, J. M.; Gallego, M. C., E-mail: victorm.sanzc@gmail.com, E-mail: jvaquero@unex.es, E-mail: maricruz@unex.es [Departamento de Fisica, Universidad de Extremadura, E-06071 Badajoz (Spain)

2012-08-15T23:59:59.000Z

83

alternative fuel light-duty vehicles  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Fuel Light-Duty Vehicles Fuel Light-Duty Vehicles T O F E N E R G Y D E P A R T M E N U E N I T E D S T A T S O F A E R I C A M SUMMARY OF RESULTS FROM THE NATIONAL RENEWABLE ENERGY LABORATORY'S VEHICLE EVALUATION DATA COLLECTION EFFORTS Alternative Fuel Light-Duty Vehicles SUMMARY OF RESULTS FROM THE NATIONAL RENEWABLE ENERGY LABORATORY'S VEHICLE EVALUATION DATA COLLECTION EFFORTS PEG WHALEN KENNETH KELLY ROB MOTTA JOHN BRODERICK MAY 1996 N T Y A U E O F E N E R G D E P A R T M E N I T E D S T A T S O F A E R I C M Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Light-Duty Vehicles in the Program . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

84

Alternative Fuels Data Center: Light-Duty Vehicle Search  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Light-Duty Vehicle Light-Duty Vehicle Search to someone by E-mail Share Alternative Fuels Data Center: Light-Duty Vehicle Search on Facebook Tweet about Alternative Fuels Data Center: Light-Duty Vehicle Search on Twitter Bookmark Alternative Fuels Data Center: Light-Duty Vehicle Search on Google Bookmark Alternative Fuels Data Center: Light-Duty Vehicle Search on Delicious Rank Alternative Fuels Data Center: Light-Duty Vehicle Search on Digg Find More places to share Alternative Fuels Data Center: Light-Duty Vehicle Search on AddThis.com... Light-Duty Vehicle Search Search our light-duty alternative fuel vehicle database to find and compare alternative fuel vehicles and generate printable reports to aid in decision-making. These vehicles might not qualify for vehicle-acquisition

85

Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Idle Heavy-Duty Idle Reduction Requirement to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Idle Reduction Requirement on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Heavy-Duty Idle Reduction Requirement Heavy-duty vehicles with a gross vehicle weight rating greater than 8,500

86

Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles  

NLE Websites -- All DOE Office Websites (Extended Search)

Medium- and Medium- and Heavy-Duty Vehicles to someone by E-mail Share Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles on Facebook Tweet about Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles on Twitter Bookmark Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles on Google Bookmark Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles on Delicious Rank Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles on Digg Find More places to share Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicles on AddThis.com... Home Overview Light-Duty Vehicles Medium- and Heavy-Duty Vehicles Transit Vehicles Trucks Idle Reduction Oil Bypass Filter Airport Ground Support Equipment Medium and Heavy Duty Hybrid Electric Vehicles

87

Alternative Fuels Data Center: Medium-Duty Vehicle Idle Reduction  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Medium-Duty Vehicle Medium-Duty Vehicle Idle Reduction Strategies to someone by E-mail Share Alternative Fuels Data Center: Medium-Duty Vehicle Idle Reduction Strategies on Facebook Tweet about Alternative Fuels Data Center: Medium-Duty Vehicle Idle Reduction Strategies on Twitter Bookmark Alternative Fuels Data Center: Medium-Duty Vehicle Idle Reduction Strategies on Google Bookmark Alternative Fuels Data Center: Medium-Duty Vehicle Idle Reduction Strategies on Delicious Rank Alternative Fuels Data Center: Medium-Duty Vehicle Idle Reduction Strategies on Digg Find More places to share Alternative Fuels Data Center: Medium-Duty Vehicle Idle Reduction Strategies on AddThis.com... More in this section... Idle Reduction Benefits & Considerations Heavy-Duty Vehicles Medium-Duty Vehicles

88

Procedures for Passenger Cars, Light-Duty Trucks and Medium-Duty  

E-Print Network (OSTI)

2001 and subsequent model-year passenger cars, light-duty trucks, and medium-duty trucks for which non-methane organic gas (NMOG) exhaust emission reduction credit is requested as a result of the use of a DOR technology on a motor vehicle radiator, air conditioning assembly, or other appropriate substrate. REFERENCES:

unknown authors

1999-01-01T23:59:59.000Z

89

Combustion Turbine Experience and Intelligence Reports: 2004 Combustion Turbine/Combined Cycle Technology Developments, Reliability Issues, and Related Markets Conditions  

Science Conference Proceedings (OSTI)

Deregulating power generation markets worldwide present both business opportunities and challenges for combustion turbine plant owners, operators, and project developers. EPRI's comprehensive Combustion Turbine/Combined Cycle (CT/CC) program provides a range of tools, methodologies, and approaches to help owner/operators and project developers face these challenges and prosper in this evolving marketplace. Access to this resource base in a timely, concise manner is key to delivering benefits in the new e...

2005-03-23T23:59:59.000Z

90

Combustion Turbine Experience and Intelligence Report: 2003: Combustion Turbine/Combined Cycle Technology Developments, Reliability Issues, and Related Markets Conditions  

Science Conference Proceedings (OSTI)

The deregulation of power generation markets worldwide presents both business opportunities and challenges for combustion turbine plant owners, operators, and project developers. EPRI's comprehensive Combustion Turbine/Combined Cycle (CT/CC) program provides a range of tools, methodologies, and approaches to help owner/operators and project developers face these challenges and prosper in this evolving marketplace. Access to this resource base in a timely, concise manner is key to delivering benefits in t...

2004-01-28T23:59:59.000Z

91

Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Vehicle Heavy-Duty Vehicle Emissions Reduction Grants to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction Grants on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction Grants on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction Grants on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction Grants on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction Grants on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Vehicle Emissions Reduction Grants on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Heavy-Duty Vehicle Emissions Reduction Grants

92

Advanced Vehicle Testing Activity: Light-Duty Vehicles  

NLE Websites -- All DOE Office Websites (Extended Search)

Light-Duty Light-Duty Vehicles to someone by E-mail Share Advanced Vehicle Testing Activity: Light-Duty Vehicles on Facebook Tweet about Advanced Vehicle Testing Activity: Light-Duty Vehicles on Twitter Bookmark Advanced Vehicle Testing Activity: Light-Duty Vehicles on Google Bookmark Advanced Vehicle Testing Activity: Light-Duty Vehicles on Delicious Rank Advanced Vehicle Testing Activity: Light-Duty Vehicles on Digg Find More places to share Advanced Vehicle Testing Activity: Light-Duty Vehicles on AddThis.com... Home Overview Light-Duty Vehicles Alternative Fuel Vehicles Plug-in Hybrid Electric Vehicles Hybrid Electric Vehicles Micro Hybrid Vehicles ARRA Vehicle and Infrastructure Projects EVSE Testing Energy Storage Testing Hydrogen Internal Combustion Engine Vehicles Other ICE

93

Damage to Power Plants Due to Cycling  

Science Conference Proceedings (OSTI)

The duty cycle for power plants ranges from baseloading or consistently operating at or near fully rated capacity to two-shifting or shutting down during off-peak demand periods. Quantifying the cost of cycling and finding ways to mitigate and control those costs are critical to profitability. European Technology Development Ltd. (ETD) originally prepared and published this report and has agreed to the current revision by EPRI. The report evaluates the effects and implications of cyclic operation on equi...

2001-07-27T23:59:59.000Z

94

Heat Recovery Steam Generator Procurement Guideline: HRSG Design Best Practices and Specification for Cyclic Duty  

Science Conference Proceedings (OSTI)

This document provides a summary of best practices for designing a new heat recovery steam generator (HRSG) for cycling and rapid start duty, including typical performance requirements and suggestions for design improvements to improve the HRSGs ability to handle cyclic operation. This document also provides a generic procurement specification for the definition and purchase of an HRSG for installation downstream of a combustion turbine. It includes both horizontal and vertical configuration options. The...

2009-12-16T23:59:59.000Z

95

Overview of Light-Duty Vehicle Studies  

NLE Websites -- All DOE Office Websites (Extended Search)

Overview of Light-Duty Vehicle Studies Overview of Light-Duty Vehicle Studies Washington, DC Workshop Sponsored by EERE Transportation Cluster July 26, 2010 Energy Efficiency & Renewable Energy eere.energy.gov 2 * This workshop is intended to be a working meeting for analysts to discuss findings and assumptions because a number of key studies on light-duty vehicles (LDVs) and biofuels have been completed in the past 5 years and the insight gained from their findings would be valuable. * Outcomes: - common understanding of the effects of differing assumptions (today); - agreement on standard assumptions for future studies, where applicable (agreement on some assumptions today, follow-up discussions/meeting may be needed for others); - list of data/information gaps and needed research and studies (a

96

Carports with Solar Panels do Double Duty for Navy | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Carports with Solar Panels do Double Duty for Navy Carports with Solar Panels do Double Duty for Navy May 14, 2010 - 12:22pm Addthis Joshua DeLung What does this project do? In...

97

Transportation Energy Futures Series: Potential for Energy Efficiency Improvement Beyond the Light-Duty-Vehicle Sector  

Science Conference Proceedings (OSTI)

Considerable research has focused on energy efficiency and fuel substitution options for light-duty vehicles, while much less attention has been given to medium- and heavy-duty trucks, buses, aircraft, marine vessels, trains, pipeline, and off-road equipment. This report brings together the salient findings from an extensive review of literature on future energy efficiency options for these non-light-duty modes. Projected activity increases to 2050 are combined with forecasts of overall fuel efficiency improvement potential to estimate the future total petroleum and greenhouse gas (GHG) emissions relative to current levels. This is one of a series of reports produced as a result of the Transportation Energy Futures (TEF) project, a Department of Energy-sponsored multi-agency project initiated to pinpoint underexplored strategies for abating GHGs and reducing petroleum dependence related to transportation.

Vyas, A. D.; Patel, D. M.; Bertram, K. M.

2013-03-01T23:59:59.000Z

98

STATE OF CALIFORNIA DUTY STATEMENT PROPOSED  

E-Print Network (OSTI)

, and technology innovators and markets regarding RD&D objectives, opportunities and impacts. The incumbent informs for program analysis and planning activities. Research economic, market and technology issues. ServeSTATE OF CALIFORNIA DUTY STATEMENT PROPOSED CEC-004 (Revised 04/07) CALIFORNIA ENERGY COMMISSION

99

Light duty utility arm startup plan  

SciTech Connect

This plan details the methods and procedures necessary to ensure a safe transition in the operation of the Light Duty Utility Arm (LDUA) System. The steps identified here outline the work scope and identify responsibilities to complete startup, and turnover of the LDUA to Characterization Project Operations (CPO).

Barnes, G.A.

1998-09-01T23:59:59.000Z

100

California Greenhouse Gas Emissions Standards for Light-Duty Vehicles (Update) (released in AEO2006)  

Reports and Publications (EIA)

The State of California was given authority under CAAA90 to set emissions standards for light-duty vehicles that exceed Federal standards. In addition, other States that do not comply with the National Ambient Air Quality Standards (NAAQS) set by the EPA under CAAA90 were given the option to adopt Californias light-duty vehicle emissions standards in order to achieve air quality compliance. CAAA90 specifically identifies hydrocarbon, carbon monoxide, and NOx as vehicle-related air pollutants that can be regulated. California has led the Nation in developing stricter vehicle emissions standards, and other States have adopted the California standards.

Information Center

2006-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Clean Cities Guide to Alternative Fuel and Advanced Medium- and Heavy-Duty Vehicles (Book)  

DOE Green Energy (OSTI)

Today's fleets are increasingly interested in medium-duty and heavy-duty vehicles that use alternative fuels or advanced technologies that can help reduce operating costs, meet emissions requirements, improve fleet sustainability, and support U.S. energy independence. Vehicle and engine manufacturers are responding to this interest with a wide range of options across a steadily growing number of vehicle applications. This guide provides an overview of alternative fuel power systems?including engines, microturbines, electric motors, and fuel cells?and hybrid propulsion systems. The guide also offers a list of individual medium- and heavy-duty vehicle models listed by application, along with associated manufacturer contact information, fuel type(s), power source(s), and related information.

Not Available

2013-08-01T23:59:59.000Z

102

Simulating Study of Premixed Charge Compression Ignition on Light-Duty Diesel Fuel Economy and Emissions Control  

DOE Green Energy (OSTI)

We utilize the Powertrain Systems Analysis Toolkit (PSAT) combined with transient engine and aftertreatment component models to simulate the impact of premixed charge compression ignition (PCCI) on the fuel economy and emissions of light-duty (LD) diesel-powered conventional and hybrid electric vehicles (HEVs). Our simulated aftertreatment train consists of a diesel oxidation catalyst (DOC), lean NOx trap (LNT), and catalyzed diesel particulate filter (DPF). The results indicate that utilizing PCCI combustion significantly reduces fuel consumption and tailpipe emissions for the conventional diesel-powered vehicle with NOx and particulate emissions controls. These benefits result from a favorable engine speed-load distribution over the cycle combined with a corresponding reduction in the need to regenerate the LNT and DPF. However, the current PCCI technology appears to offer less potential benefit for diesel HEVs equipped with similar emissions controls. This is because PCCI can only be activated over a relatively small part of the drive cycle. Thus we conclude that future utilization of PCCI in diesel HEVs will require significant extension of the available speed-load range for PCCI and revision of current HEV engine management strategies before significant benefits can be realized.

Gao, Zhiming [ORNL; Daw, C Stuart [ORNL; Wagner, Robert M [ORNL

2012-01-01T23:59:59.000Z

103

Implications to Heavy-Duty Diesel Emissions  

NLE Websites -- All DOE Office Websites (Extended Search)

ORNL/TM-200015 ORNL/TM-200015 MANAGED BY UT-BATTELLE FOR THE DEPARTMENT OF ENERGY A Vector Approach to Regression Analysis and Its Implications to Heavy-Duty Diesel Emissions November 2000 Prepared by H. 1. McAdams AccaMath Services Carrolton, Illinois R. W. Crawford R.W. Crawford Energy Systems Tucson, Arizona G. R. Hadder Oak Ridge National Laboratory Oak Ridge, Tennessee - UT-BATTELLE -. ORNL-27 (4.00) II ORNL/TM-200015 A VECTOR APPROACH TO REGRESSION ANALYSIS AND ITS APPLICATION TO HEAVY-DUTY DIESEL EMISSIONS H. T. McAdams AccaMath Services Carrollton, Illinois R. W. Crawford RWCrawford Energy Systems Tucson, Arizona G. R. Hadder Oak Ridge National Laboratory Oak Ridge, Tennessee November 2000 Prepared for Office of Energy Effkiency and Renewable Energy

104

Greenhouse impact due to the use of combustible fuels: Life cycle viewpoint and relative radiative forcing commitment  

SciTech Connect

Extensive information on the greenhouse impacts of various human actions is important in developing effective climate change mitigation strategies. The greenhouse impacts of combustible fuels consist not only of combustion emissions but also of emissions from the fuel production chain and possible effects on the ecosystem carbon storages. It is important to be able to assess the combined, total effect of these different emissions and to express the results in a comprehensive way. In this study, a new concept called relative radiative forcing commitment (RRFC) is presented and applied to depict the greenhouse impact of some combustible fuels currently used in Finland. RRFC is a ratio that accounts for the energy absorbed in the Earth system due to changes in greenhouse gas concentrations (production and combustion of fuel) compared to the energy released in the combustion of fuel. RRFC can also be expressed as a function of time in order to give a dynamic cumulative picture on the caused effect. Varying time horizons can be studied separately, as is the case when studying the effects of different climate policies on varying time scales. The RRFC for coal for 100 years is about 170, which means that in 100 years 170 times more energy is absorbed in the atmosphere due to the emissions of coal combustion activity than is released in combustion itself. RRFC values of the other studied fuel production chains varied from about 30 (forest residues fuel) to 190 (peat fuel) for the 100-year study period. The length of the studied time horizon had an impact on the RRFC values and, to some extent, on the relative positions of various fuels.

Kirkinen, J.; Palosuo, T.; Holmgren, K.; Savolainen, I. [VTT Technical Research Center Finland, Espoo (Finland)

2008-09-15T23:59:59.000Z

105

ORNL light-duty vehicles PC system  

Science Conference Proceedings (OSTI)

This data system, designed by the Oak Ridge National Laboratory (ORNL) and funded by the US Department of Energy (DOE), monitors information on every light-duty vehicle (automobiles and light-duty trucks) sold in the United States since model year 1976. The data are specified in two days. One way is on a model basis (i.e, engine and transmission combinations) and includes data on city, highway, and combined fuel economies; engine size; drive-train; fuel type (gasoline or diesel); interior volume; body type; and other vehicle attributes. The other way is on a make basis (e.g., Ford Escort, Oldsmobile 98) and includes data on sales; Environmental Protection Agency (EPA) size class; the sales-weighted fuel economy; sales-weighted interior volume; sales-weighted engine displacement (cid); curb weight; and other attributes. A unique identification number is assigned to a specific vehicle category. This identification number contains information on the manufacturer, the location of the manufacturer (domestic or import), and the sponsorship of the vehicle (domestic or import). Fuel economies, model year sales and various vehicle characteristics for every make of the 164 million light-duty vehicles sold in the US since model year 1976 can be obtained from this data system. 2 figs., 4 tabs.

Hu, P.S.; Patterson, P.D. (Oak Ridge National Lab., TN (USA))

1989-01-01T23:59:59.000Z

106

Draft report: application of organic Rankine cycle heat recovery systems to diesel powered marine vessels  

DOE Green Energy (OSTI)

The analysis and results of an investigation of the application of organic Rankine cycle heat recovery systems to diesel-powered marine vessels are described. The program under which this study was conducted was sponsored jointly by the US Energy Research and Development Administration, the US Navy, and the US Maritime Administration. The overall objective of this study was to investigate diesel bottoming energy recovery systems, currently under development by three US concerns, to determine the potential for application to marine diesel propulsion and auxiliary systems. The study primarily focused on identifying the most promising vessel applications (considering vessel type, size, population density, operational duty cycle, etc.) so the relative economic and fuel conservation merits of energy recovery systems could be determined and assessed. Vessels in the current fleet and the projected 1985 fleet rated at 1000 BHP class and above were investigated.

Not Available

1977-07-15T23:59:59.000Z

107

Detection of Multiple-Duty-Related Security Leakage in ...  

Science Conference Proceedings (OSTI)

... ARCHON is a digital library that federates physics ... on Software Engineering (ICSE 2005), pages ... formation Security Conference (ISC 2005), pages ...

2009-11-16T23:59:59.000Z

108

The Road Ahead for Light Duty Vehicle Fuel Demand  

U.S. Energy Information Administration (EIA)

The Road Ahead for Light Duty Vehicle Fuel Demand Joanne Shore Energy Information Administration July 7, 2005 Refining Capacity Surplus Shrank As Demand Grew ...

109

Advanced Vehicle Testing Activity - Medium and Heavy Duty Hybrid...  

NLE Websites -- All DOE Office Websites (Extended Search)

an electric vehicle. Medium and heavy duty HEV testing results to date are posted below. Vehicle Testing Reports INL Hybrid Shuttle Busses INL Hybrid Shuttle Busses INL Hybrid...

110

A Distributed Framework for Coordinated Heavy-duty Vehicle ...  

E-Print Network (OSTI)

Dec 28, 2013 ... Abstract: Heavy-duty vehicles traveling in a single file with small intervehicle distances experience a reduced aerodynamic drag and therefore ...

111

American Recovery and Reinvestment Act (ARRA) - Light-Duty Electric...  

NLE Websites -- All DOE Office Websites (Extended Search)

American Recovery and Reinvestment Act (ARRA) Light-Duty Electric Drive Vehicle and Charging Infrastructure Testing What's New Chevrolet Volt Vehicle Demonstration: Project to...

112

American Recovery and Reinvestment Act (ARRA) - Light-Duty Electric...  

NLE Websites -- All DOE Office Websites (Extended Search)

American Recovery and Reinvestment Act (ARRA) Light-Duty Electric Drive Vehicle and Charging Infrastructure Testing What's New EV Project Overview Report: Project to date...

113

Selection of Light Duty Truck Engine Air Systems Using Virtual Lab Tests  

DOE Green Energy (OSTI)

An integrated development approach using seasoned engine technology methodologies, virtual lab parametric investigations, and selected hardware verification tests reflects today's state-of-the-art R&D trends. This presentation will outline such a strategy. The use of this ''Wired'' approach results in substantial reduction in the development cycle time and hardware iterations. An example showing the virtual lab application for a viable design of the air-exhaust-turbocharger system of a light duty truck engine for personal transportation will be presented.

Zhang, Houshun

2000-08-20T23:59:59.000Z

114

The Annual Agricultural Cycle  

E-Print Network (OSTI)

. Sman shad agriculture 1.WAV Length of track 00:44:03 Related tracks (include description/relationship if appropriate) Title of track The Annual Agricultural Cycle Translation of title Description (to be used in archive entry...

Zla ba sgrol ma

2009-11-16T23:59:59.000Z

115

Fuel Cell Technologies Office: DOE Light Duty Vehicle Workshop  

NLE Websites -- All DOE Office Websites (Extended Search)

Light Duty Vehicle Workshop Light Duty Vehicle Workshop On July 26, 2010, the U.S. Department of Energy (DOE) sponsored a Light Duty Vehicle Workshop in Washington, D.C. Presentations from this workshop appear below as Adobe Acrobat PDFs. Download Adobe Reader. Presentations Overview of Light-Duty Vehicle Studies (PDF 562 KB), Sam Baldwin, Chief Technology Officer, Office of Energy Efficiency and Renewable Energy (EERE), DOE Light Duty Vehicle Pathways (PDF 404 KB), Tien Nguyen, Fuel Cell Technologies Office, EERE, DOE Hydrogen Transition Study (PDF 2.6 MB), Paul N. Leiby, David Greene, Zhenhong Lin, David Bowman, and Sujit Das, Oak Ridge National Laboratory Alternative Transportation Technologies: Hydrogen, Biofuels, Advanced Efficiency, and Plug-in Hybrid Electric Vehicles (PDF 123 KB), Joan Ogden and Mike Ramage, National Research Council

116

In-Use Performance Results of Medium Duty Electric Vehicles (Presentation)  

DOE Green Energy (OSTI)

This presentation describes a DOE program to monitor and report on vehicle performance and energy utilization of medium-duty and heavy-duty electric vehicles.

Walkowicz, K.

2012-07-01T23:59:59.000Z

117

Effects of Cycling on Environmental Controls at Fossil-Fired Power Plants  

Science Conference Proceedings (OSTI)

Review of the literature and detailed documentation of utility experience at a range of fossil-fired plants produced a comprehensive picture of the ways in which cycling duty affects the operation of environmental controls. In also identifying possible solutions, this study offers a basis for EPRI research on this special aspect of cycling operation.

1987-03-12T23:59:59.000Z

118

Probabilistic evaluation of mobile source air pollution: Volume 1 -- Probabilistic modeling of exhaust emissions from light duty gasoline vehicles. Final report, 1 August 1994--31 May 1997  

Science Conference Proceedings (OSTI)

Emission factors for light duty gasoline vehicles (LDGV) are typically developed based upon laboratory testing of vehicles for prescribed driving cycles. In this project, selected LDGV data sets and modeling assumptions used to develop Mobile5a were revisited. Probabilistic estimates of the inter-vehicle variability in emissions and the uncertainty in fleet average emissions for selected vehicle types and driving cycles were made. Case studies focused upon probabilistic analysis of base emission rate and speed correction estimates used in Mobile5a for throttle body and port fuel injected vehicles. Based upon inter-vehicle variability in the data sets and a probabilistic model in which the standard error terms of regression models employed in Mobile5a are also considered, the uncertainty was estimated for average emission factors for the selected fleets of light duty gasoline vehicles. The 90 percent confidence interval for the average emission factor varied in range with pollutant and driving cycle.

Frey, H.C.; Kini, M.D.

1997-12-01T23:59:59.000Z

119

The transportable heavy-duty engine emissions testing laboratory  

DOE Green Energy (OSTI)

West Virginia University has designed and constructed a Transportable Emissions Testing Laboratory for measuring emissions from heavy duty vehicles, such as buses and trucks operating on conventional and alternative fuels. The laboratory facility can be transported to a test site located at, or nearby, the home base of the vehicles to be tested. The laboratory has the capability of measuring vehicle emissions as the vehicle is operated under either transient or steady state loads and speeds. The exhaust emissions from the vehicle is sampled and the levels of the constituents of the emission are measured. The laboratory consists of two major units; a power absorber unit and an emissions measurement unit. A power absorber unit allows for the connection of a dynamic load to the drive train of the vehicle so that the vehicle can be driven'' through a test cycle while actually mounted on a stationary test bed. The emissions unit contains instrumentation and equipment which allows for the dilution of the vehicle's exhaust with air. The diluteed exhaust is sampled and analyzed to measure the level of concentration of those constituents which have been identified to have impact on the clean environment. Sampling probes withdraw diluted exhaust which is supplied to a number of different exhaust gas analysis instruments. The exhaust gas analysis instruments have the capability to measure the levels of the following exhaust gas constituents: carbon monoxide (CO), carbon dioxide (CO{sub 2}), oxides of nitrogen (NO{sub x}), unburned hydrocarbons (HC), formaldehyde (HCHO), methane and particulate matter. Additional instruments or sampling devices can be installed whenever measurements of additional constituents are desired. A computer based, data acquisition system is used to continuously monitor a wide range of parameters important to the operation of the test and to record the test results.

Not Available

1991-05-01T23:59:59.000Z

120

The transportable heavy-duty engine emissions testing laboratory  

SciTech Connect

West Virginia University has designed and constructed a Transportable Emissions Testing Laboratory for measuring emissions from heavy duty vehicles, such as buses and trucks operating on conventional and alternative fuels. The laboratory facility can be transported to a test site located at, or nearby, the home base of the vehicles to be tested. The laboratory has the capability of measuring vehicle emissions as the vehicle is operated under either transient or steady state loads and speeds. The exhaust emissions from the vehicle is sampled and the levels of the constituents of the emission are measured. The laboratory consists of two major units; a power absorber unit and an emissions measurement unit. A power absorber unit allows for the connection of a dynamic load to the drive train of the vehicle so that the vehicle can be driven'' through a test cycle while actually mounted on a stationary test bed. The emissions unit contains instrumentation and equipment which allows for the dilution of the vehicle's exhaust with air. The diluteed exhaust is sampled and analyzed to measure the level of concentration of those constituents which have been identified to have impact on the clean environment. Sampling probes withdraw diluted exhaust which is supplied to a number of different exhaust gas analysis instruments. The exhaust gas analysis instruments have the capability to measure the levels of the following exhaust gas constituents: carbon monoxide (CO), carbon dioxide (CO{sub 2}), oxides of nitrogen (NO{sub x}), unburned hydrocarbons (HC), formaldehyde (HCHO), methane and particulate matter. Additional instruments or sampling devices can be installed whenever measurements of additional constituents are desired. A computer based, data acquisition system is used to continuously monitor a wide range of parameters important to the operation of the test and to record the test results.

1991-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Engineering Design of a Continuous Duty $\\gamma$ -Production Proton Target for the Contraband Detection System  

E-Print Network (OSTI)

Engineering Design of a Continuous Duty $\\gamma$ -Production Proton Target for the Contraband Detection System

Rathke, J; Klein, J

1999-01-01T23:59:59.000Z

122

Antidumping and Countervailing Duty Federal Register Notices and Decision  

NLE Websites -- All DOE Office Websites (Extended Search)

Antidumping and Countervailing Duty Federal Register Notices and Decision Antidumping and Countervailing Duty Federal Register Notices and Decision Memoranda Manufacturing Data/Tools Research/Tech Services Apps Challenges Blogs Let's Talk Manufacturing You are here Data.gov » Communities » Manufacturing » Data Antidumping and Countervailing Duty Federal Register Notices and Decision Memoranda Dataset Summary Description Antidumping and Countervailing Duty decision published in the Federal Register and their accompanying unpublished issues and decision memoranda. Tags {imports,"manufactured goods","trade law","unfair trade",dumping,subsidies} Dataset Ratings Overall 0 No votes yet Data Utility 0 No votes yet Usefulness 0 No votes yet Ease of Access 0 No votes yet Dataset Additional Information Last Updated 02/15/2000

123

The Road Ahead for Light Duty Vehicle Fuel Demand  

Gasoline and Diesel Fuel Update (EIA)

Energy Information Administration Logo. If you need assistance viewing this page, please call (202) 586-8800 The Road Ahead for Light Duty Vehicle Fuel Demand Click here to start...

124

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

82 Application: Tractor Fuel Types: CNG, LNG Power Source(s): Cummins Westport - ISL G 8.9L Additional Description: A heavy-duty truck designed for regional-haul applications....

125

Advanced Vehicle Testing Activity: Medium- and Heavy-Duty Vehicle...  

NLE Websites -- All DOE Office Websites (Extended Search)

2003 City of Los Angeles Bureau of Sanitation Advanced Technology Vehicles in Service: LNG Heavy-Duty Trucks Coca-Cola Hybrid Electric Delivery Trucks Coca-Cola Refreshments...

126

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

T660 Tractor Application: Tractor Fuel Types: CNG, LNG Power Source(s): Cummins Westport - ISX12 G Additional Description: A Class 8 heavy-duty truck designed for on-highway...

127

Light-Duty Vehicle Energy Consumption by Technology Type from...  

Open Energy Info (EERE)

Light-Duty Vehicle Energy Consumption by Technology Type from EIA AEO 2011 Early Release Supplemental Table 47 of EIA AEO 2011 Early Release
2011-02-23T15:57:46Z...

128

Improving Energy Use in Heavy-Duty Vehicles  

NLE Websites -- All DOE Office Websites (Extended Search)

advances in consumer automobiles may dominate the headlines, but heavy-duty trucks and trains also have challenges that need to be addressed. From excessive idling to engine wear,...

129

Light Duty Fuel Cell Electric Vehicle Hydrogen Fueling Protocol  

NLE Websites -- All DOE Office Websites (Extended Search)

DOE Webinar Light Duty Fuel Cell Electric Vehicle Hydrogen Fueling Protocol U.S. DOE WEBINAR ON H2 FUELING PROTOCOLS: PARTICIPANTS Rob Burgess Moderator Jesse Schneider TIR J2601,...

130

DOE Hydrogen Analysis Repository: Biofuels in Light-Duty Vehicles  

NLE Websites -- All DOE Office Websites (Extended Search)

Biofuels in Light-Duty Vehicles Biofuels in Light-Duty Vehicles Project Summary Full Title: Mobility Chains Analysis of Technologies for Passenger Cars and Light-Duty Vehicles Fueled with Biofuels: Application of the GREET Model to the Role of Biomass in America's Energy Future (RBAEF) Project Project ID: 82 Principal Investigator: Michael Wang Brief Description: The mobility chains analysis estimated the energy consumption and emissions associated with the use of various biofuels in light-duty vehicles. Keywords: Well-to-wheels (WTW); ethanol; biofuels; Fischer Tropsch diesel; hybrid electric vehicles (HEV) Purpose The project was a multi-organization, multi-sponsor project to examine the potential of biofuels in the U.S. Argonne was responsible for the well-to-wheels analysis of biofuel production and use.

131

Nuclear power and prima facie duties towards future people  

Science Conference Proceedings (OSTI)

Before assessing the desirability of nuclear power we first need to narrow down the focus on its potential and its impediments. Within the technological possibilities of nuclear power production, I shall formulate two prima facie duties for safeguarding ...

Behnam Taebi

2009-05-01T23:59:59.000Z

132

Feature - Fuel Economy for Medium- and Heavy-Duty Vehicles  

NLE Websites -- All DOE Office Websites (Extended Search)

New Report Looks at Fuel Economy for Medium- and Heavy-Duty Vehicles New Report Looks at Fuel Economy for Medium- and Heavy-Duty Vehicles heavy duty trucks Argonne researcher Aymeric Rousseau was part of a National Academy of Science (NAS) committee established to make recommendations on improving and regulating fuel consumption for medium- and heavy-duty vehicles. On March 31, the committee issued a report that evaluates various technologies and methods that could improve the fuel economy of these vehicles. As a system analysis engineer at Argonne's Center for Transportation Research, Rousseau contributed his expertise on vehicle modeling and simulation to the committee, which was comprised of 19 members from industry, research organizations and academia. Rousseau, who leads the development of Argonne's PSAT and Autonomie software tools, helped the committee determine how modeling and simulation tools can be used to:

133

Alternative Fuels Data Center: Light-Duty Vehicle Idle Reduction Strategies  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Light-Duty Vehicle Light-Duty Vehicle Idle Reduction Strategies to someone by E-mail Share Alternative Fuels Data Center: Light-Duty Vehicle Idle Reduction Strategies on Facebook Tweet about Alternative Fuels Data Center: Light-Duty Vehicle Idle Reduction Strategies on Twitter Bookmark Alternative Fuels Data Center: Light-Duty Vehicle Idle Reduction Strategies on Google Bookmark Alternative Fuels Data Center: Light-Duty Vehicle Idle Reduction Strategies on Delicious Rank Alternative Fuels Data Center: Light-Duty Vehicle Idle Reduction Strategies on Digg Find More places to share Alternative Fuels Data Center: Light-Duty Vehicle Idle Reduction Strategies on AddThis.com... More in this section... Idle Reduction Benefits & Considerations Heavy-Duty Vehicles Medium-Duty Vehicles

134

The ethanol heavy-duty truck fleet demonstration project  

DOE Green Energy (OSTI)

This project was designed to test and demonstrate the use of a high- percentage ethanol-blended fuel in a fleet of heavy-duty, over-the- road trucks, paying particular attention to emissions, performance, and repair and maintenance costs. This project also represents the first public demonstration of the use of ethanol fuels as a viable alternative to conventional diesel fuel in heavy-duty engines.

NONE

1997-06-01T23:59:59.000Z

135

NGV and FCV Light Duty Transportation Perspective  

NLE Websites -- All DOE Office Websites (Extended Search)

G G presentation slides: Natural Gas and Fuel Cell Vehicle Light-Duty transportation perspectives Matt Fronk, Matt Fronk & Associates, LLC 1 OctOber 2011 | ArgOnne nAtiOnAl lAbOrAtOry NG Workshop summary report - appeNDIX G 2 OctOber 2011 | ArgOnne nAtiOnAl lAbOrAtOry NG Workshop summary report - appeNDIX G 3 OctOber 2011 | ArgOnne nAtiOnAl lAbOrAtOry NG Workshop summary report - appeNDIX G 4 OctOber 2011 | ArgOnne nAtiOnAl lAbOrAtOry NG Workshop summary report - appeNDIX G 5 OctOber 2011 | ArgOnne nAtiOnAl lAbOrAtOry NG Workshop summary report - appeNDIX G 6 OctOber 2011 | ArgOnne nAtiOnAl lAbOrAtOry NG Workshop summary report - appeNDIX G 7 OctOber 2011 | ArgOnne nAtiOnAl lAbOrAtOry NG Workshop summary report - appeNDIX G

136

Piston Bowl Optimization for RCCI Combustion in a Light-Duty Multi-Cylinder Engine  

Science Conference Proceedings (OSTI)

Reactivity Controlled Compression Ignition (RCCI) is an engine combustion strategy that that produces low NO{sub x} and PM emissions with high thermal efficiency. Previous RCCI research has been investigated in single-cylinder heavy-duty engines. The current study investigates RCCI operation in a light-duty multi-cylinder engine at 3 operating points. These operating points were chosen to cover a range of conditions seen in the US EPA light-duty FTP test. The operating points were chosen by the Ad Hoc working group to simulate operation in the FTP test. The fueling strategy for the engine experiments consisted of in-cylinder fuel blending using port fuel-injection (PFI) of gasoline and early-cycle, direct-injection (DI) of diesel fuel. At these 3 points, the stock engine configuration is compared to operation with both the original equipment manufacturer (OEM) and custom machined pistons designed for RCCI operation. The pistons were designed with assistance from the KIVA 3V computational fluid dynamics (CFD) code. By using a genetic algorithm optimization, in conjunction with KIVA, the piston bowl profile was optimized for dedicated RCCI operation to reduce unburned fuel emissions and piston bowl surface area. By reducing these parameters, the thermal efficiency of the engine was improved while maintaining low NOx and PM emissions. Results show that with the new piston bowl profile and an optimized injection schedule, RCCI brake thermal efficiency was increased from 37%, with the stock EURO IV configuration, to 40% at the 2,600 rev/min, 6.9 bar BMEP condition, and NOx and PM emissions targets were met without the need for exhaust after-treatment.

Hanson, Reed M [ORNL; Curran, Scott [ORNL; Wagner, Robert M [ORNL; Reitz, Rolf [University of Wisconsin; Kokjohn, Sage [University of Wisconsin, Madison

2012-01-01T23:59:59.000Z

137

Light duty utility arm walkdown report  

Science Conference Proceedings (OSTI)

This document is a report of the Light Duty Utility Arm (LDUA) drawing walkdown. The purpose of this walkdown was to validate the essential configuration of the LDUA in preparation of deploying the equipment in a Hanford waste tank. The LDUA system has, over the course of its development, caused the generation of a considerable number of design drawings. The number of drawings is estimated to be well over 1,000. A large number consist of vendor type drawings, furnished by both Pacific Northwest National Laboratory (PNNL) and SPAR Aerospace Limited (SPAR). A smaller number, approximately 200, are H-6 type drawing sheets in the Project Hanford Management Contract (PHMC) document control system. A preliminary inspection of the drawings showed that the physical configuration of the LDUA did not match the documented configuration. As a result of these findings, a scoping walkdown of 20 critical drawing sheets was performed to determine if a problem existed in configuration management of the LDUA system. The results of this activity showed that 18 of the 20 drawing sheets were found to contain errors or omissions of varying concern. Given this, Characterization Engineering determined that a walkdown of the drawings necessary and sufficient to enable safe operation and maintenance of the LDUA should be performed. A review team was assembled to perform a review of all of the drawings and determine the set which would need to be verified through an engineering walkdown. The team determined that approximately 150 H-6 type drawing sheets would need to be verified, 12 SPAR/PNNL drawing sheets would need to be verified and converted to H-6 drawings, and three to six new drawings would be created (see Appendix A). This report documents the results of that walkdown.

Smalley, J.L.

1998-09-25T23:59:59.000Z

138

Life Cycle Management Planning at V.C. Summer Nuclear Plant: Main Condenser, Radiation Monitoring System, and Nuclear Safety-Related HVAC Chilled Water  

Science Conference Proceedings (OSTI)

As the electric power industry becomes more competitive, life cycle management (LCM) of systems, structures, and components (SSCs) becomes very important to keep the plant economically viable throughout its remaining licensed operating term (either a 40-year or 60-year term). This report provides the industry with lessons learned from applying the EPRI LCM planning process to three SSCs at V.C. Summer Generating Station.

2001-12-21T23:59:59.000Z

139

Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Requirements  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Truck Idle Heavy-Duty Truck Idle Reduction Requirements to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Requirements on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Requirements on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Requirements on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Requirements on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Requirements on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Requirements on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Heavy-Duty Truck Idle Reduction Requirements

140

Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Technologies  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Truck Idle Heavy-Duty Truck Idle Reduction Technologies to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Technologies on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Technologies on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Technologies on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Technologies on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Technologies on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Truck Idle Reduction Technologies on AddThis.com... More in this section... Idle Reduction Benefits & Considerations Heavy-Duty Vehicles Onboard Equipment Truck Stop Electrification

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Search  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Vehicle and Heavy-Duty Vehicle and Engine Search to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Search on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Search on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Search on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Search on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Search on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Search on AddThis.com... Heavy-Duty Vehicle and Engine Search Search our database to find and compare specific vehicles, engines, or hybrid propulsion systems and generate printable reports.

142

Alternative Fuels Data Center: Heavy-Duty Emissions Reduction Grant Program  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Emissions Heavy-Duty Emissions Reduction Grant Program to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Emissions Reduction Grant Program on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Emissions Reduction Grant Program on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Emissions Reduction Grant Program on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Emissions Reduction Grant Program on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Emissions Reduction Grant Program on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Emissions Reduction Grant Program on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Heavy-Duty Emissions Reduction Grant Program

143

Diesel Exhaust Emissions Control for Light-Duty Vehicles  

SciTech Connect

The objective of this paper is to present the results of diesel exhaust aftertreatment testing and analysis done under the FreedomCAR program. Nitrogen Oxides (NOx) adsorber technology was selected based on a previous investigation of various NOx aftertreatment technologies including non-thermal plasma, NOx adsorber and active lean NOx. Particulate Matter (PM) emissions were addressed by developing a catalyzed particulate filter. After various iterations of the catalyst formulation, the aftertreatment components were integrated and optimized for a light duty vehicle application. This compact exhaust aftertreatment system is dual leg and consists of a sulfur trap, NOx adsorbers, and catalyzed particulate filters (CPF). During regeneration, supplementary ARCO ECD low-sulfur diesel fuel is injected upstream of the adsorber and CPF in the exhaust. Steady state and transient emission test results with and without the exhaust aftertreatment system (EAS) are presented. Results of soot filter regeneration by injecting low-sulfur diesel fuel and slip of unregulated emissions, such as NH3, are discussed. Effects of adsorber size and bypass strategy on NOx conversion efficiency and fuel economy penalty are also presented in this paper. The results indicate that if the supplementary fuel injection is optimized, NH3 slip is negligible. During the FTP cycle, injection of low sulfur diesel fuel can create temperature exotherms high enough to regenerate a loaded CPF. With the optimized NOx adsorber regeneration strategies the fuel injection penalty can be reduced by 40 to 50%. Results for various other issues like low temperature light off, reductant optimization, exhaust sulfur management, system integration and design trade-off, are also presented and discussed in this paper. (SAE Paper SAE-2003-01-0041 © 2003 SAE International. This paper is published on this website with permission from SAE International. As a user of this website, you are permitted to view this paper on-line, download this pdf file and print one copy of this paper at no cost for your use only. The downloaded pdf file and printout of this SAE paper may not be copied, distributed or forwarded to others or for the use of others.)

Mital, R.; Li, J.; Huang, S. C.; Stroia, B. J.; Yu, R. C. (Cummins, Inc.); Anderson, J.A. (Argonne National Laboratory); Howden, Kenneth C. (U.S. Department of Energy)

2003-03-01T23:59:59.000Z

144

FUEL CONSUMPTION AND COST SAVINGS OF CLASS 8 HEAVY-DUTY TRUCKS POWERED BY NATURAL GAS  

Science Conference Proceedings (OSTI)

We compare the fuel consumption and greenhouse gas emissions of natural gas and diesel heavy-duty (HD) class 8 trucks under consistent simulated drive cycle conditions. Our study included both conventional and hybrid HD trucks operating with either natural gas or diesel engines, and we compare the resulting simulated fuel efficiencies, fuel costs, and payback periods. While trucks powered by natural gas engines have lower fuel economy, their CO2 emissions and costs are lower than comparable diesel trucks. Both diesel and natural gas powered hybrid trucks have significantly improved fuel economy, reasonable cost savings and payback time, and lower CO2 emissions under city driving conditions. However, under freeway-dominant driving conditions, the overall benefits of hybridization are considerably less. Based on payback period alone, non-hybrid natural gas trucks appear to be the most economic option for both urban and freeway driving environments.

Gao, Zhiming [ORNL; LaClair, Tim J [ORNL; Daw, C Stuart [ORNL; Smith, David E [ORNL

2013-01-01T23:59:59.000Z

145

Producing Persistent, High-Current, High-Duty-Factor H- Beams for Routine 1 MW Operation of SNS  

Science Conference Proceedings (OSTI)

Since 2009, SNS has been producing neutrons with ion beam powers near 1 MW, which requires the extraction of ~50 mA H- ions from the ion source with a ~5% duty factor. The 50 mA are achieved after an initial dose of ~3 mg of Cs and heating the Cs collar to ~170 C. The 50 mA normally persist for the entire 4-week source service cycles. Fundamental processes are reviewed to elucidate the persistence of the SNS H- beams without a steady feed of Cs and why the Cs collar temperature may have to be kept near 170 C.

Stockli, Martin P [ORNL; Han, Baoxi [ORNL; Hardek, Thomas W [ORNL; Kang, Yoon W [ORNL; Murray Jr, S N [ORNL; Pennisi, Terry R [ORNL; Piller, Chip [ORNL; Santana, Manuel [ORNL; Welton, Robert F [ORNL

2012-01-01T23:59:59.000Z

146

The Carbon Cycle  

NLE Websites -- All DOE Office Websites (Extended Search)

Carbon Cycle Print E-mail U.S. Carbon Cycle Science Program U.S. Carbon Cycle Science Program The U.S. Carbon Cycle Science Program, in consultation with the Carbon Cycle...

147

Carbon Cycle  

NLE Websites -- All DOE Office Websites (Extended Search)

Carbon Cycle Carbon Cycle Latest Global Carbon Budget Estimates Including CDIAC Estimates Terrestrial Carbon Management Data Sets and Analyses Carbon Dioxide Emissions from Fossil-Fuel Consumption and Cement Manufacture, (2011) Annual Fossil-Fuel CO2 Emissions: Mass of Emissions Gridded by One Degree Latitude by One Degree Longitude (2012) Monthly Fossil-Fuel CO2 Emissions: Mass of Emissions Gridded by One Degree Latitude by One Degree Longitude (2012) Annual Fossil-Fuel CO2 Emissions: Global Stable Carbon Isotopic Signature (2012) Monthly Fossil-Fuel CO2 Emissions: Isomass (δ 13C) of Emissions Gridded by One Degree Latitude by One Degree Longitude (2012) AmeriFlux - Terrestrial Carbon Dioxide, Water Vapor, and Energy Balance Measurements Estimates of Monthly CO2 Emissions and Associated 13C/12C Values

148

Evaluation of fuel consumption potential of medium and heavy duty vehicles through modeling and simulation.  

SciTech Connect

The main objective of this report is to provide quantitative data to support the Committee in its task of establishing a report to support rulemaking on medium- and heavy-duty fuel efficiency improvement. In particular, it is of paramount importance for the Committee to base or illustrate their conclusions on established models and actual state-of-the art data. The simulations studies presented in the report have been defined and requested by the members of the National Academy committee to provide quantitative inputs to support their recommendations. As such, various technologies and usage scenarios were considered for several applications. One of the objective is to provide the results along with their associated assumptions (both vehicle and drive cycles), information generally missing from public discussions on literature search. Finally, the advantages and limitations of using simulation will be summarized. The study addresses several of the committee tasks, including: (1) Discussion of the implication of metric selection; (2) Assessing the impact of existing technologies on fuel consumption through energy balance analysis (both steady-state and standard cycles) as well as real world drive cycles; and (3) Impact of future technologies, both individually and collectively.

Delorme, A.; Karbowski, D.; Sharer, P.; Energy Systems

2010-03-31T23:59:59.000Z

149

Alternative Fuels Data Center: Truck Stop Electrification for Heavy-Duty  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Truck Stop Truck Stop Electrification for Heavy-Duty Trucks to someone by E-mail Share Alternative Fuels Data Center: Truck Stop Electrification for Heavy-Duty Trucks on Facebook Tweet about Alternative Fuels Data Center: Truck Stop Electrification for Heavy-Duty Trucks on Twitter Bookmark Alternative Fuels Data Center: Truck Stop Electrification for Heavy-Duty Trucks on Google Bookmark Alternative Fuels Data Center: Truck Stop Electrification for Heavy-Duty Trucks on Delicious Rank Alternative Fuels Data Center: Truck Stop Electrification for Heavy-Duty Trucks on Digg Find More places to share Alternative Fuels Data Center: Truck Stop Electrification for Heavy-Duty Trucks on AddThis.com... More in this section... Idle Reduction Benefits & Considerations Heavy-Duty Vehicles

150

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Data  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Data Collection Methods to someone by E-mail Data Collection Methods to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Data Collection Methods on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Data Collection Methods on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Data Collection Methods on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Data Collection Methods on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Data Collection Methods on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine Data Collection Methods on AddThis.com... Heavy-Duty Vehicle and Engine Data Collection Methods To maintain the Heavy-Duty Vehicle and Engine Search tool, the National

151

Alternative Fuels Data Center: Clean Fuel Contracts for Heavy-Duty  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Clean Fuel Contracts Clean Fuel Contracts for Heavy-Duty Equipment to someone by E-mail Share Alternative Fuels Data Center: Clean Fuel Contracts for Heavy-Duty Equipment on Facebook Tweet about Alternative Fuels Data Center: Clean Fuel Contracts for Heavy-Duty Equipment on Twitter Bookmark Alternative Fuels Data Center: Clean Fuel Contracts for Heavy-Duty Equipment on Google Bookmark Alternative Fuels Data Center: Clean Fuel Contracts for Heavy-Duty Equipment on Delicious Rank Alternative Fuels Data Center: Clean Fuel Contracts for Heavy-Duty Equipment on Digg Find More places to share Alternative Fuels Data Center: Clean Fuel Contracts for Heavy-Duty Equipment on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Clean Fuel Contracts for Heavy-Duty Equipment

152

Alternative Fuels Data Center: Light-Duty Vehicle Data Collection Methods  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Data Collection Methods to someone by E-mail Data Collection Methods to someone by E-mail Share Alternative Fuels Data Center: Light-Duty Vehicle Data Collection Methods on Facebook Tweet about Alternative Fuels Data Center: Light-Duty Vehicle Data Collection Methods on Twitter Bookmark Alternative Fuels Data Center: Light-Duty Vehicle Data Collection Methods on Google Bookmark Alternative Fuels Data Center: Light-Duty Vehicle Data Collection Methods on Delicious Rank Alternative Fuels Data Center: Light-Duty Vehicle Data Collection Methods on Digg Find More places to share Alternative Fuels Data Center: Light-Duty Vehicle Data Collection Methods on AddThis.com... Light-Duty Vehicle Data Collection Methods To maintain the Light-Duty Vehicle Search tool, the National Renewable Energy Laboratory (NREL) gathers vehicle specifications, photos, and

153

Alternative Fuels Data Center: Heavy-Duty Diesel Vehicle Vouchers - San  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Diesel Heavy-Duty Diesel Vehicle Vouchers - San Joaquin Valley to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Diesel Vehicle Vouchers - San Joaquin Valley on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Diesel Vehicle Vouchers - San Joaquin Valley on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Diesel Vehicle Vouchers - San Joaquin Valley on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Diesel Vehicle Vouchers - San Joaquin Valley on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Diesel Vehicle Vouchers - San Joaquin Valley on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Diesel Vehicle Vouchers - San Joaquin Valley on AddThis.com... More in this section... Federal

154

Alternative Fuels Data Center: Heavy-Duty Vehicle Greenhouse Gas Emissions  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Vehicle Heavy-Duty Vehicle Greenhouse Gas Emissions Regulations to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Vehicle Greenhouse Gas Emissions Regulations on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Vehicle Greenhouse Gas Emissions Regulations on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Vehicle Greenhouse Gas Emissions Regulations on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Vehicle Greenhouse Gas Emissions Regulations on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Vehicle Greenhouse Gas Emissions Regulations on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Vehicle Greenhouse Gas Emissions Regulations on AddThis.com... More in this section... Federal

155

Alternative Fuels Data Center: Heavy-Duty Alternative Fuel and Advanced  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Heavy-Duty Alternative Heavy-Duty Alternative Fuel and Advanced Vehicle Purchase Vouchers to someone by E-mail Share Alternative Fuels Data Center: Heavy-Duty Alternative Fuel and Advanced Vehicle Purchase Vouchers on Facebook Tweet about Alternative Fuels Data Center: Heavy-Duty Alternative Fuel and Advanced Vehicle Purchase Vouchers on Twitter Bookmark Alternative Fuels Data Center: Heavy-Duty Alternative Fuel and Advanced Vehicle Purchase Vouchers on Google Bookmark Alternative Fuels Data Center: Heavy-Duty Alternative Fuel and Advanced Vehicle Purchase Vouchers on Delicious Rank Alternative Fuels Data Center: Heavy-Duty Alternative Fuel and Advanced Vehicle Purchase Vouchers on Digg Find More places to share Alternative Fuels Data Center: Heavy-Duty Alternative Fuel and Advanced Vehicle Purchase Vouchers on AddThis.com...

156

Durability Evaluation of Urea SCR Catalysts for Heavy Duty Diesel Engines  

DOE Green Energy (OSTI)

Assess the potential long-term durability of various SCR catalyst formulations for mobile heavy duty diesel application.

Koshkarian, Kent

2000-08-20T23:59:59.000Z

157

Economizer refrigeration cycle space heating and cooling system and process  

DOE Patents (OSTI)

This invention relates to heating and cooling systems and more particularly to an improved system utilizing a Stirling Cycle engine heat pump in a refrigeration cycle. 18 figs.

Jardine, D.M.

1983-03-22T23:59:59.000Z

158

Economizer refrigeration cycle space heating and cooling system and process  

DOE Patents (OSTI)

This invention relates to heating and cooling systems and more particularly to an improved system utilizing a Stirling Cycle engine heat pump in a refrigeration cycle.

Jardine, Douglas M. (Colorado Springs, CO)

1983-01-01T23:59:59.000Z

159

NREL: U.S. Life Cycle Inventory Database - Webmaster  

NLE Websites -- All DOE Office Websites (Extended Search)

name: Your email address: Your message: Send Message Printable Version Life Cycle Inventory Home About the Project Database Publications Life Cycle Assessments Related Links...

160

Bus Research and Testing Program Heavy-duty Chassis Dynamometer and Emissions Testing Facility  

E-Print Network (OSTI)

Bus Research and Testing Program Heavy-duty Chassis Dynamometer and Emissions Testing Facility, hydrocarbons and carbon dioxide from transit buses and heavy-duty vehicles when they are tested on simulated includes a heavy-duty chassis dynamometer, required for conducting these tests, as well as a heavy

Lee, Dongwon

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Road Ahead for Light Duty Vehicle Fuel Demand, The  

Reports and Publications (EIA)

Explores some potential variations in light-duty vehicle demand to illustrate both the magnitude of demand changes and the length of time that it can take to affect demand when different levels of new-vehicle efficiencies and penetrations are assumed

Information Center

2005-07-11T23:59:59.000Z

162

3M heavy duty roto peen: Baseline report; Greenbook (chapter)  

SciTech Connect

The heavy-duty roto peen technology is being evaluated at Florida International University (FIU) as a baseline technology. It is a commercially available technology and has been used for various projects at locations throughout the country. In conjunction with FIU`s evaluation of efficiency and cost, this report covers the human factors assessment for safety and health issues. The heavy-duty roto peen allows for the selective removal of concrete substrates. The peen is a tungsten carbide shot brazed to a hardened steel rivet that is supported by a heavy-duty flexible flap. The shot rivet is kept captive to the tool by mounting the roto peen in a slotted hub. The heavy-duty roto peen is designed to be used with several commercially available pieces of equipment. The equipment being used will determine the width of each pass. The equipment being used with the roto peen is then connected to a vacuum system for dust collection during scabbling. The safety and health evaluation during the human factors assessment focused on two main areas: noise and dust.

NONE

1997-07-31T23:59:59.000Z

163

3M heavy duty roto peen: Baseline report  

SciTech Connect

The heavy-duty roto peen technology was being evaluated at Florida International University (FIU) as a baseline technology. It is a commercially available technology and has been used for various projects at locations throughout the country. In conjunction with FIU`s evaluation of efficiency and cost, this report covers the human factors assessment for safety and health issues. The heavy-duty roto peen allows for the selective removal of concrete substrates. The peen is a tungsten carbide shot brazed to a hardened steel rivet that is supported by a heavy-duty flexible flap. The shot rivet is kept captive to the tool by mounting the roto peen in a slotted hub. The heavy-duty roto peen is designed to be used with several commercially available pieces of equipment. The equipment being used will determine the width of each pass. The equipment being used with the roto peen is then connected to a vacuum system for dust collection during scabbling. The safety and health evaluation during the human factors assessment focused on two main areas: noise and dust.

NONE

1997-07-31T23:59:59.000Z

164

Impact of Heavy Duty Vehicle Emissions Reductions on Global Climate  

Science Conference Proceedings (OSTI)

The impact of a specified set of emissions reductions from heavy duty vehicles on climate change is calculated using the MAGICC 5.3 climate model. The integrated impact of the following emissions changes are considered: CO2, CH4, N2O, VOC, NOx, and SO2. This brief summarizes the assumptions and methods used for this calculation.

Calvin, Katherine V.; Thomson, Allison M.

2010-08-01T23:59:59.000Z

165

Natural Gas-optimized Advanced Heavy-duty Engine  

E-Print Network (OSTI)

Natural Gas-optimized Advanced Heavy-duty Engine Transportation Research PIER Transportation of natural gas vehicles as a clean alternative is currently limited to smaller engine displacements and spark ignition, which results in lower performance. A large displacement natural gas engine has

166

ORNL/TM-2008/122 Class-8 Heavy Truck Duty Cycle  

E-Print Network (OSTI)

in a number of projects using High Voltage DC Transmission (HVDC) lines, but it would require a fairly large wave power conversion scheme to make it economically attractive. A typical example of a HVDC subsea

167

Ambient-RF-Energy-Harvesting Sensor Node with Capacitor-Leakage-Aware Duty Cycle Control  

E-Print Network (OSTI)

of harvested energy. Thanks to these energy managements, we achieve efficient energy usage and maximize. Software energy managements for WSNs are typically realized by exploiting this feature and thus the goal by aggregation of the capacitor leakage characteristics and energy shortage risk. Table 1. Energy usage in long

Tentzeris, Manos

168

Cycles and weight effects on emissions and development of predictive emissions models for heavy duty trucks.  

E-Print Network (OSTI)

??NOX and PM emissions data from the 5-mode CARB HHDDT Schedule, UDDS, and AC5080 were reviewed, with reference to each other. Next, two-dimensional correlations were… (more)

Vora, Kuntal A.

2006-01-01T23:59:59.000Z

169

A Stream-Oriented Power Management Protocol for Low Duty Cycle Sensor Network Applications  

E-Print Network (OSTI)

These protocols waste energy through radio switching, idlePacket-based protocols also waste energy through neighborrouting table may be a waste of energy. In this instance, a

Ramanathan, Nithya; Yarvis, Mark D; Chhabra, Jasmeet; Kushalnagar, Nandakishore; Krishnamurthy, Lakshman; Estrin, D

2005-01-01T23:59:59.000Z

170

Knowledge-based duty cycle estimation in wireless sensor networks: Application for sound pressure monitoring  

Science Conference Proceedings (OSTI)

Wireless sensor networks comprise an important research area and a near future for industry and communications. Wireless sensor networks contain resource-constrained sensor nodes that are powered by small batteries, limited process and memory and wireless ... Keywords: Constrained device, Fuzzy rule based system, Multi-agent system, Sound pressure, Wireless sensor network

J. C. Cuevas-Martinez; J. Canada-Bago; J. A. Fernandez-Prieto; M. A. Gadeo-Martos

2013-02-01T23:59:59.000Z

171

Fuel-cycle assessment of selected bioethanol production.  

Science Conference Proceedings (OSTI)

A large amount of corn stover is available in the U.S. corn belt for the potential production of cellulosic bioethanol when the production technology becomes commercially ready. In fact, because corn stover is already available, it could serve as a starting point for producing cellulosic ethanol as a transportation fuel to help reduce the nation's demand for petroleum oil. Using the data available on the collection and transportation of corn stover and on the production of cellulosic ethanol, we have added the corn stover-to-ethanol pathway in the GREET model, a fuel-cycle model developed at Argonne National Laboratory. We then analyzed the life-cycle energy use and emission impacts of corn stover-derived fuel ethanol for use as E85 in flexible fuel vehicles (FFVs). The analysis included fertilizer manufacturing, corn farming, farming machinery manufacturing, stover collection and transportation, ethanol production, ethanol transportation, and ethanol use in light-duty vehicles (LDVs). Energy consumption of petroleum oil and fossil energy, emissions of greenhouse gases (carbon dioxide [CO{sub 2}], nitrous oxide [N{sub 2}O], and methane [CH{sub 4}]), and emissions of criteria pollutants (carbon monoxide [CO], volatile organic compounds [VOCs], nitrogen oxide [NO{sub x}], sulfur oxide [SO{sub x}], and particulate matter with diameters smaller than 10 micrometers [PM{sub 10}]) during the fuel cycle were estimated. Scenarios of ethanol from corn grain, corn stover, and other cellulosic feedstocks were then compared with petroleum reformulated gasoline (RFG). Results showed that FFVs fueled with corn stover ethanol blends offer substantial energy savings (94-95%) relative to those fueled with RFG. For each Btu of corn stover ethanol produced and used, 0.09 Btu of fossil fuel is required. The cellulosic ethanol pathway avoids 86-89% of greenhouse gas emissions. Unlike the life cycle of corn grain-based ethanol, in which the ethanol plant consumes most of the fossil fuel, farming consumes most of the fossil fuel in the life cycle of corn stover-based ethanol.

Wu, M.; Wang, M.; Hong, H.; Energy Systems

2007-01-31T23:59:59.000Z

172

Relative Short-Range Forecast Impact from Aircraft, Profiler, Radiosonde, VAD, GPS-PW, METAR, and Mesonet Observations via the RUC Hourly Assimilation Cycle  

Science Conference Proceedings (OSTI)

An assessment is presented on the relative forecast impact on the performance of a numerical weather prediction model from eight different observation data types: aircraft, profiler, radiosonde, velocity azimuth display (VAD), GPS-derived ...

Stanley G. Benjamin; Brian D. Jamison; William R. Moninger; Susan R. Sahm; Barry E. Schwartz; Thomas W. Schlatter

2010-04-01T23:59:59.000Z

173

Alternative Cycles for Power Converters  

NLE Websites -- All DOE Office Websites (Extended Search)

expansion in the high pressure turbine by passing it through an additional lead-to-steam heat exchanger (HX). This can be a complication relative to the superheated steam cycle....

174

Assessing the Battery Cost at Which Plug-In Hybrid Medium-Duty Parcel Delivery Vehicles Become Cost-Effective  

DOE Green Energy (OSTI)

The National Renewable Energy Laboratory (NREL) validated diesel-conventional and diesel-hybrid medium-duty parcel delivery vehicle models to evaluate petroleum reductions and cost implications of hybrid and plug-in hybrid diesel variants. The hybrid and plug-in hybrid variants are run on a field data-derived design matrix to analyze the effect of drive cycle, distance, engine downsizing, battery replacements, and battery energy on fuel consumption and lifetime cost. For an array of diesel fuel costs, the battery cost per kilowatt-hour at which the hybridized configuration becomes cost-effective is calculated. This builds on a previous analysis that found the fuel savings from medium duty plug-in hybrids more than offset the vehicles' incremental price under future battery and fuel cost projections, but that they seldom did so under present day cost assumptions in the absence of purchase incentives. The results also highlight the importance of understanding the application's drive cycle specific daily distance and kinetic intensity.

Ramroth, L. A.; Gonder, J. D.; Brooker, A. D.

2013-04-01T23:59:59.000Z

175

Fuel Cycle Subcommittee  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Report to NEAC Report to NEAC Fuel Cycle Subcommittee Meeting of April 23, 2013 Washington D.C. June 13, 2013 Burton Richter (Chair), Margaret Chu, Darleane Hoffman, Raymond Juzaitis, Sekazi K Mtingwa, Ronald P Omberg, Joy L Rempe, Dominique Warin 2 I Introduction and Summary The Fuel Cycle Subcommittee of NEAC met in Washington on April 23, 2013. The meeting focused on issues relating to the NE advanced reactor program (sections II, III, and IV), and on storage and transportation issues (section V) related to a possible interim storage program that is the first step in moving toward a new permanent repository as recommended by the Blue Ribbon Commission (BRC) and discussed in the recent response by DOE to Congress on the BRC report 1 . The agenda is given in

176

Alternative Fuels Data Center: Plug-In Hybrid and Zero Emission Light-Duty  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Plug-In Hybrid and Plug-In Hybrid and Zero Emission Light-Duty Vehicle Rebates to someone by E-mail Share Alternative Fuels Data Center: Plug-In Hybrid and Zero Emission Light-Duty Vehicle Rebates on Facebook Tweet about Alternative Fuels Data Center: Plug-In Hybrid and Zero Emission Light-Duty Vehicle Rebates on Twitter Bookmark Alternative Fuels Data Center: Plug-In Hybrid and Zero Emission Light-Duty Vehicle Rebates on Google Bookmark Alternative Fuels Data Center: Plug-In Hybrid and Zero Emission Light-Duty Vehicle Rebates on Delicious Rank Alternative Fuels Data Center: Plug-In Hybrid and Zero Emission Light-Duty Vehicle Rebates on Digg Find More places to share Alternative Fuels Data Center: Plug-In Hybrid and Zero Emission Light-Duty Vehicle Rebates on AddThis.com...

177

Advanced regenerative absorption refrigeration cycles  

DOE Patents (OSTI)

Multi-effect regenerative absorption cycles which provide a high coefficient of performance (COP) at relatively high input temperatures. An absorber-coupled double-effect regenerative cycle (ADR cycle) (10) is provided having a single-effect absorption cycle (SEA cycle) (11) as a topping subcycle and a single-effect regenerative absorption cycle (1R cycle) (12) as a bottoming subcycle. The SEA cycle (11) includes a boiler (13), a condenser (21), an expansion device (28), an evaporator (31), and an absorber (40), all operatively connected together. The 1R cycle (12) includes a multistage boiler (48), a multi-stage resorber (51), a multisection regenerator (49) and also uses the condenser (21), expansion device (28) and evaporator (31) of the SEA topping subcycle (11), all operatively connected together. External heat is applied to the SEA boiler (13) for operation up to about 500 degrees F., with most of the high pressure vapor going to the condenser (21) and evaporator (31) being generated by the regenerator (49). The substantially adiabatic and isothermal functioning of the SER subcycle (12) provides a high COP. For higher input temperatures of up to 700 degrees F., another SEA cycle (111) is used as a topping subcycle, with the absorber (140) of the topping subcycle being heat coupled to the boiler (13) of an ADR cycle (10). The 1R cycle (12) itself is an improvement in that all resorber stages (50b-f) have a portion of their output pumped to boiling conduits (71a-f) through the regenerator (49), which conduits are connected to and at the same pressure as the highest pressure stage (48a) of the 1R multistage boiler (48).

Dao, Kim (14 Nace Ave., Piedmont, CA 94611)

1990-01-01T23:59:59.000Z

178

Effect of B20 and Low Aromatic Diesel on Transit Bus NOx Emissions Over Driving Cycles with a Range of Kinetic Intensity  

DOE Green Energy (OSTI)

Oxides of nitrogen (NOx) emissions for transit buses for up to five different fuels and three standard transit duty cycles were compared to establish whether there is a real-world biodiesel NOx increase for transit bus duty cycles and engine calibrations. Six buses representing the majority of the current national transit fleet and including hybrid and selective catalyst reduction systems were tested on a heavy-duty chassis dynamometer with certification diesel, certification B20 blend, low aromatic (California Air Resources Board) diesel, low aromatic B20 blend, and B100 fuels over the Manhattan, Orange County and UDDS test cycles. Engine emissions certification level had the dominant effect on NOx; kinetic intensity was the secondary driving factor. The biodiesel effect on NOx emissions was not statistically significant for most buses and duty cycles for blends with certification diesel, except for a 2008 model year bus. CARB fuel had many more instances of a statistically significant effect of reducing NOx. SCR systems proved effective at reducing NOx to near the detection limit on all duty cycles and fuels, including B100. While offering a fuel economy benefit, a hybrid system significantly increased NOx emissions over a same year bus with a conventional drivetrain and the same engine.

Lammert, M. P.; McCormick, R. L.; Sindler, P.; Williams, A.

2012-10-01T23:59:59.000Z

179

Ethics - Impartiality in Performing Official Duties | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Impartiality in Impartiality in Performing Official Duties Ethics - Impartiality in Performing Official Duties What is meant by "improper appearances" and "a lack of impartiality?" Think of it as a question of fairness. Suppose you went to a baseball game and you found out that the umpire was the uncle of a player on one of the teams. Most people would say that the umpire should not work that game, because there would be a strong appearance that he might not make the calls fairly and impartially. A similar rule applies to you when you are doing your job. You should not act on a matter if a reasonable person who knew the circumstances of the situation could legitimately question your fairness. For example, your fairness might reasonably be questioned if you were to work on a project

180

DOE/VTP Light-Duty Diesel Engine Commercialization  

NLE Websites -- All DOE Office Websites (Extended Search)

VTP Light-Duty Diesel Engine Commercialization VTP Light-Duty Diesel Engine Commercialization Vehicle Technologies Program (VTP) spearheaded the development of clean diesel engine technologies for passenger vehicles in the 1990s, spurring the current reintroduction of highly efficient diesel vehicles into the passenger market. Cummins partnered with VTP to develop a diesel engine that meets the 50-state 2010 emissions standards while boosting vehicle fuel economy by 30% over comparable gasoline-powered vehicles. The Cummins engine is scheduled to debut in 2010 Chrysler sport utility vehicles and pickup trucks. VTP-sponsored research demonstrated the ability of diesel passenger vehicles with advanced aftertreatment to meet EPA's stringent Tier II Bin 5 standards, representing an 83% reduction in NOx and more than 87% reduction in

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Enhanced absorption cycle computer model. Final report  

DOE Green Energy (OSTI)

Absorption heat pumps have received renewed and increasing attention in the past two decades. The rising cost of electricity has made the particular features of this heat-powered cycle attractive for both residential and industrial applications. Solar-powered absorption chillers, gas-fired domestic heat pumps, and waste-heat-powered industrial temperatures boosters are a few of the applications recently subjected to intensive research and development. The absorption heat pump research community has begun to search for both advanced cycles in various multistage configurations and new working fluid combinations with potential for enhanced performance and reliability. The development of working absorptions systems has created a need for reliable and effective system simulations. A computer code has been developed for simulation of absorption systems at steady state in a flexible and modular form, making it possible to investigate various cycle configurations with different working fluids. The code is based on unit subroutines containing the governing equations for the system`s components and property subroutines containing thermodynamic properties of the working fluids. The user conveys to the computer an image of his cycle by specifying the different subunits and their interconnections. Based on this information, the program calculates the temperature, flow rate, concentration, pressure, and vapor fraction at each state point in the system, and the heat duty at each unit, from which the coefficient of performance (COP) may be determined. This report describes the code and its operation, including improvements introduced into the present version. Simulation results are described for LiBr-H{sub 2}O triple-effect cycles, LiCl-H{sub 2}O solar-powered open absorption cycles, and NH{sub 3}-H{sub 2}O single-effect and generator-absorber heat exchange cycles. An appendix contains the User`s Manual.

Grossman, G.; Wilk, M. [Technion-Israel Inst. of Tech., Haifa (Israel). Faculty of Mechanical Engineering

1993-09-01T23:59:59.000Z

182

Model curriculum outline for Alternatively Fueled Vehicle (AFV) automotive technician training in light and medium duty CNG and LPG  

DOE Green Energy (OSTI)

This model curriculum outline was developed using a turbo-DACUM (Developing a Curriculum) process which utilizes practicing experts to undertake a comprehensive job and task analysis. The job and task analysis serves to establish current baseline data accurately and to improve both the process and the product of the job through constant and continuous improvement of training. The DACUM process is based on the following assumptions: (1) Expert workers are the best source for task analysis. (2) Any occupation can be described effectively in terms of tasks. (3) All tasks imply knowledge, skills, and attitudes/values. A DACUM panel, comprised of six experienced and knowledgeable technicians who are presently working in the field, was given an orientation to the DACUM process. The panel then identified, verified, and sequenced all the necessary job duty areas and tasks. The broad duty categories were rated according to relative importance and assigned percentage ratings in priority order. The panel then rated every task for each of the duties on a scale of 1 to 3. A rating of 3 indicates an {open_quotes}essential{close_quotes} task, a rating of 2 indicates an {open_quotes}important{close_quotes} task, and a rating of 1 indicates a {open_quotes}desirable{close_quotes} task.

NONE

1997-04-01T23:59:59.000Z

183

Indirect-fired gas turbine dual fuel cell power cycle  

DOE Patents (OSTI)

The present invention relates generally to an integrated fuel cell power plant, and more specifically to a combination of cycles wherein a first fuel cell cycle tops an indirect-fired gas turbine cycle and a second fuel cell cycle bottoms the gas turbine cycle so that the cycles are thermally integrated in a tandem operating arrangement. The United States Government has rights in this invention pursuant to the employer-employee relationship between the United States Department of Energy and the inventors.

Micheli, P.L.; Williams, M.C.; Sudhoff, F.A.

1998-04-01T23:59:59.000Z

184

Membrane-Based Air Composition Control for Light-Duty Diesel Vehicles: A Benefit and Cost Assessment  

DOE Green Energy (OSTI)

This report presents the methodologies and results of a study conducted by Argonne National Laboratory (Argonne) to assess the benefits and costs of several membrane-based technologies. The technologies evaluated will be used in automotive emissions-control and performance-enhancement systems incorporated into light-duty diesel vehicle engines. Such engines are among the technologies that are being considered to power vehicles developed under the government-industry Partnership for a New Generation of Vehicles (PNGV). Emissions of nitrogen oxides (NO{sub x}) from diesel engines have long been considered a barrier to use of diesels in urban areas. Recently, particulate matter (PM) emissions have also become an area of increased concern because of new regulations regarding emissions of particulate matter measuring 2.5 micrometers or less (PM{sub 2.5}). Particulates are of special concern for diesel engines in the PNGV program; the program has a research goal of 0.01 gram per mile (g/mi) of particulate matter emissions under the Federal Test Procedure (FTP) cycle. This extremely low level (one-fourth the level of the Tier II standard) could threaten the viability of using diesel engines as stand-alone powerplants or in hybrid-electric vehicles. The techniques analyzed in this study can reduce NO{sub x} and particulate emissions and even increase the power density of the diesel engines used in light-duty diesel vehicles.

K. Stork; R. Poola

1998-10-01T23:59:59.000Z

185

Light-Duty Vehicle Energy Consumption by Fuel Type from EIA AEO...  

Open Energy Info (EERE)

Linked Data Search Share this page on Facebook icon Twitter icon Light-Duty Vehicle Energy Consumption by Fuel Type from EIA AEO 2011 Early Release Dataset Summary...

186

Clean Cities' Guide to Alternative Fuel and Advanced Medium- and Heavy-Duty Vehicles (Brochure)  

DOE Green Energy (OSTI)

Guide describes the alternative fuel and advanced medium- and heavy-duty vehicles available on the market, including buses, vans, refuse haulers, and more.

Not Available

2010-09-01T23:59:59.000Z

187

Desulfurization Effects on a Light-Duty Diesel Vehicle NOx Adsorber Exhaust Emission Control System  

DOE Green Energy (OSTI)

Analyzes the effects on gaseous emissions, before and after desulfurization, on a light-duty diesel vehicle with a NOx adsorber catalyst.

Tatur, M.; Tomazic, D.; Tyrer, H.; Thornton, M.; Kubsh, J.

2006-05-01T23:59:59.000Z

188

Can U.S. Supply Accommodate Shifts to Diesel-Fueled Light-Duty ...  

U.S. Energy Information Administration (EIA)

Can U.S. Supply Accommodate Shifts to Diesel-Fueled Light-Duty Vehicles? ... the automobile manufacturers probably face the largest diesel-vehicle challenges in the ...

189

Limit Cycle and Conserved Dynamics  

E-Print Network (OSTI)

We demonstrate that a potential coexists with limit cycle. Here the potential determines the final distribution of population. Our demonstration consists of three steps: We first show the existence of limit from a typical physical sciences setting: the potential is a type of Mexican hat type, with the strength of a magnetic field scale with the strength the potential gradient near the limit cycle, and the friction goes to zero faster than the potential near the limit cycle. Hence the dynamics at the limit cycle is conserved. The diffusion matrix is nevertheless finite at the limit cycle. Secondly, we construct the potential in the dynamics with limit cycle in a typical dynamical systems setting. Thirdly, we argue that such a construction can be carried out in a more general situation based on a method discovered by one of us. This method of dealing with stochastic differential equation is in general different from both Ito and Stratonovich calculus. Our result may be useful in many related applications, such as in the discussion of metastability of limit cycle and in the construction of Hopfield potential in the neural network computation.

X. -M. Zhu; L. Yin; P. Ao

2004-12-21T23:59:59.000Z

190

Advanced Fuel Cycle Economic Sensitivity Analysis  

Science Conference Proceedings (OSTI)

A fuel cycle economic analysis was performed on four fuel cycles to provide a baseline for initial cost comparison using the Gen IV Economic Modeling Work Group G4 ECON spreadsheet model, Decision Programming Language software, the 2006 Advanced Fuel Cycle Cost Basis report, industry cost data, international papers, the nuclear power related cost study from MIT, Harvard, and the University of Chicago. The analysis developed and compared the fuel cycle cost component of the total cost of energy for a wide range of fuel cycles including: once through, thermal with fast recycle, continuous fast recycle, and thermal recycle.

David Shropshire; Kent Williams; J.D. Smith; Brent Boore

2006-12-01T23:59:59.000Z

191

Solar cycle changes in coronal holes and space weather cycles J. G. Luhmann,1  

E-Print Network (OSTI)

Solar cycle changes in coronal holes and space weather cycles J. G. Luhmann,1 Y. Li,1 C. N. Arge,2-heliolatitude solar wind over approximately the last three solar cycles. Related key parameters like interplanetary explain solar magnetic field control of long-term interplanetary variations. In particular, the enduring

California at Berkeley, University of

192

Graph Invariants and Large Cycles - a Survey  

E-Print Network (OSTI)

Graph invariants are the best and single tools for investigation of abstract structures of graphs. They, combined in convenient relations, carry global and general information about a graph and its various substructures (cycle structures, factors, colorings, coverings, and so on). In this survey paper we have attempted to bring together all direct (pure) relations between basic invariants of a graph and its large cycle structures, perhaps the most important cycle structures, namely Hamilton, longest, dominating and some generalized cycles including Hamilton and dominating cycles as special cases. These very few relations actually form a source (basis) from which nearly all possible hamiltonian results can be developed further based on generalized and extended invariants, extended list of path or cycle structures and additional structural limitations.

Nikoghosyan, Zh G

2010-01-01T23:59:59.000Z

193

APBF-DEC NOx Adsorber/DPF Project: Light-Duty Passenger Car Platform  

DOE Green Energy (OSTI)

A 1.9L turbo direct injection (TDI) diesel engine was modified to achieve the upcoming Tier 2 Bin 5 emission standard in combination with a NOx adsorber catalyst (NAC) and a diesel particulate filter (DPF). The primary objective for developing this test bed is to investigating the effects of different fuel sulfur contents on the performance of an advanced emission control system (ECS) in a light-duty application. During the development process, the engine-out emissions were minimized by applying a state-of-the-art combustion system in combination with cooled exhaust gas recirculation (EGR). The subsequent calibration effort resulted in emission levels requiring 80-90 percent nitrogen-oxide (NOx) and particulate matter (PM) conversion rates by the corresponding ECS. The strategy development included ean/rich modulation for NAC regeneration, as well as, the desulfurization of the NAC and the regeneration of the DPF. Two slightly different ECS were investigated and calibrated. The initial vehicle results in an Audi A4 station wagon over the federal test procedure (FTP), US 06, and the highway fuel economy test (HFET) cycle indicate the potential of these configuration to meet the future Tier 2 emission standard.

Tomazic, D; Tatur, M; Thornton, M

2003-08-24T23:59:59.000Z

194

Getting performance without sacrificing economy or emissions control in a heavy-duty LPG engine  

SciTech Connect

A commercial 637 CID liquefied petroleum gas (LPG) engine was evaluated as a candidate powerplant for new bus purchases and/or as a replacement for obsolete LPG engines currently being used in metropolitan Chicago bus service. Limited route service experience with LPG conversion of a gasoline engine indicated both its potential and the need for its optimization in order to take advantage of the unique characteristics of LPG. The engine-dynamometer study, with emphasis on fuel system-ignition relationships, led to substantial improvement in fuel economy without depreciation of engine power. The 637 CID LPG engine fuel economy was increased from an average of 1.77 mpg for 1965 to 1971 to 2.60 mpg for the Dec. 1971 to April 1972 period in Chicago field tests. Cylinder head redesign permitted lean mixture operation that reduced exhaust emissions to levels calculated to conform to the 1973 Federal standards and the 1973-1974 California Air Resources Board requirements for heavy-duty engines. The exhaust emissions data obtained with the optimized 7.5:1 CR engine based on the California 13-mode cycle were 8.3 g/bhp/hr carbon monoxide and 9.9 g/bhp/hr hydrocarbons plus nitrogen dioxide.

Mengelkamp, R.A.; Linnard, R.E.

1973-01-01T23:59:59.000Z

195

Life Cycle Engineering Group  

Science Conference Proceedings (OSTI)

... for green manufacturing and construction applications; conduct life cycle engineering assessments for energy efficiency and environmental ...

2012-08-23T23:59:59.000Z

196

TTRDC - Light Duty E-Drive Vehicles Monthly Sales Updates  

NLE Websites -- All DOE Office Websites (Extended Search)

Light Duty Electric Drive Vehicles Monthly Sales Updates Currently available electric-drive vehicles (EDV) in the U.S market include hybrid electric vehicles (HEV), plug-in hybrid electric vehicles (PHEV), and all electric vehicles (AEV). Plug-in Vehicles (PEV) include both PHEV and AEV. HEVs debuted in the U.S. market in December 1999 with 17 sales of the first-generation Honda Insight, while the first PHEV (Chevrolet Volt) and AEV (Nissan Leaf) most recently debuted in December 2010. Electric drive vehicles are offered in several car and SUV models, and a few pickup and van models. Historical sales of HEV, PHEV, and AEV are compiled by Argonne's Center for Transportation Research and reported to the U.S. Department of Energy's Vehicle Technology Program Office each month. These sales are shown in Figures 1, 2 and 3. Figure 1 shows monthly new PHEV and AEV sales by model. Figure 2 shows yearly new HEV sales by model. Figure 3 shows electric drive vehicles sales share of total light-duty vehicle (LDV) sales since 1999. Figure 4 shows HEV and PEV sales change with gasoline price..

197

On-Road Remote Sensing of Heavy-duty Diesel Truck  

E-Print Network (OSTI)

On-Road Remote Sensing of Heavy-duty Diesel Truck Emissions in the Austin- San Marcos Area: August Denver, CO 80208 November 1998 UNIVERSITY Of DENVER #12;Remote Sensing of Heavy-duty Trucks in Austin be observed by probing the exhaust. In the process of measuring the ratios, the remote sensing unit results

Denver, University of

198

Control System Development for an Advanced-Technology Medium-Duty Hybrid Electric Truck  

E-Print Network (OSTI)

03TB-45 Control System Development for an Advanced-Technology Medium-Duty Hybrid Electric Truck and vehicle test results for a medium-duty hybrid electric truck are reported in this paper. The design the benchmark vehicle. INTRODUCTION Hybrid powertrain is among the most visible transportation technology

Grizzle, Jessy W.

199

Materials-Enabled High-Efficiency (MEHE) Heavy-Duty Diesel Engines  

DOE Green Energy (OSTI)

The purpose of this Cooperative Research and Development Agreement (CRADA) between UTBattelle, Inc. and Caterpillar, Inc. was to improve diesel engine efficiency by incorporating advanced materials to enable higher combustion pressures and temperatures necessary for improved combustion. The project scope also included novel materials for use in advanced components and designs associated with waste-heat recovery and other concepts for improved thermal efficiency. Caterpillar initially provided ORNL with a 2004 Tier 2 C15 ACERT diesel engine (designed for on-highway use) and two 600 hp motoring dynamometers. The first year of the CRADA effort was focused on establishing a heavy-duty experimental engine research cell. First year activities included procuring, installing and commissioning the cell infrastructure. Infrastructure components consisted of intake air handling system, water tower, exhaust handling system, and cell air conditioning. Other necessary infrastructure items included the fuel delivery system and bottled gas handling to support the analytical instrumentation. The second year of the CRADA focused on commissioning the dynamometer system to enable engine experimentation. In addition to the requirements associated with the dynamometer controller, the electrical system needed a power factor correction system to maintain continuity with the electrical grid. During the second year the engine was instrumented and baseline operated to confirm performance and commission the dynamometer. The engine performance was mapped and modeled according to requirements provided by Caterpillar. This activity was further supported by a Work-for-Others project from Caterpillar to evaluate a proprietary modeling system. A second Work-for-Others activity was performed to evaluate a novel turbocharger design. This project was highly successful and may lead to new turbocharger designs for Caterpillar heavy-duty diesel engines. During the third (and final) year of the CRADA, a novel valve material was evaluated to assess high temperature performance and durability. A series of prototype valves, composed of a unique nickel-alloy was placed in the engine head. The engine was aggressively operated using a transient test cycle for 200 hours. The valve recession was periodically measured to determine valve performance. Upon completion of the test the valves were removed and returned to Caterpillar for additional assessment. Industrial in-kind support was available throughout the project period. Review of the status and research results were carried out on a regular basis (meetings and telecons) which included direction for future work activities. A significant portion of the industrial support was in the form of information exchange and technical consultation.

Kass, M.; Veliz, M. (Caterpillar, Inc.)

2011-09-30T23:59:59.000Z

200

Using LNG as a Fuel in Heavy-Duty Tractors  

DOE Green Energy (OSTI)

Recognizing the lack of operational data on alternative fuel heavy-truck trucks, NREL contracted with the Trucking Research Institute (TRI) in 1994 to obtain a cooperative agreement with Liquid Carbonic. The purpose of this agreement was to (1) purchase and operate liquid natural gas- (LNG-) powered heavy-duty tractor-trailers with prototype Detroit Diesel Corporation (DDC) Series 60 natural gas (S60G) engines in over-the-road commercial service applications; and (2) collect and provide operational data to DDC to facilitate the on-road prototype development of the engine and to NREL for the Alternative Fuels Data Center. The vehicles operated from August 1994 through April of 1997 and led to a commercially available, emissions-certified S60G in 1998. This report briefly documents the engine development, the operational characteristics of LNG, and the lessons learned during the project.

Liquid Carbonic, Inc. and Trucking Research Institute

1999-08-09T23:59:59.000Z

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Transportable Heavy Duty Emissions Testing Laboratory and Research Program  

DOE Green Energy (OSTI)

The objective of this program was to quantify the emissions from heavy-duty vehicles operating on alternative fuels or advanced fuel blends, often with novel engine technology or aftertreatment. In the first year of the program West Virginia University (WVU) researchers determined that a transportable chassis dynamometer emissions measurement approach was required so that fleets of trucks and buses did not need to be ferried across the nation to a fixed facility. A Transportable Heavy-Duty Vehicle Emissions Testing Laboratory (Translab) was designed, constructed and verified. This laboratory consisted of a chassis dynamometer semi-trailer and an analytic trailer housing a full scale exhaust dilution tunnel and sampling system which mimicked closely the system described in the Code of Federal Regulations for engine certification. The Translab was first used to quantify emissions from natural gas and methanol fueled transit buses, and a second Translab unit was constructed to satisfy research demand. Subsequent emissions measurement was performed on trucks and buses using ethanol, Fischer-Tropsch fuel, and biodiesel. A medium-duty chassis dynamometer was also designed and constructed to facilitate research on delivery vehicles in the 10,000 to 20,000lb range. The Translab participated in major programs to evaluate low-sulfur diesel in conjunction with passively regenerating exhaust particulate filtration technology, and substantial reductions in particulate matter were recorded. The researchers also participated in programs to evaluate emissions from advanced natural gas engines with closed loop feedback control. These natural gas engines showed substantially reduced levels of oxides of nitrogen. For all of the trucks and buses characterized, the levels of carbon monoxide, oxides of nitrogen, hydrocarbons, carbon dioxide and particulate matter were quantified, and in many cases non-regulated species such as aldehydes were also sampled. Particle size was also quantified during selected studies. A laboratory was established at WVU to provide for studies which supported and augmented the Translab research, and to provide for development of superior emissions measurement systems. This laboratory research focused on engine control and fuel sulfur issues. In recent years, as engine and aftertreatment technologies advanced, emissions levels were reduced such that they were at or below the Translab detectable limits, and in the same time frame the US Environmental Protection Agency required improved measurement methodologies for engine emissions certification. To remain current and relevant, the researchers designed a new Translab analytic system, housed in a container which can be transported on a semi-trailer. The new system's dilution tunnel flow was designed to use a subsonic venturi with closed loop control of blower speed, and the secondary dilution and particulate matter filter capture were designed to follow new EPA engine certification procedures. A further contribution of the program has been the development of techniques for creating heavy-duty vehicle test schedules, and the creation of schedules to mimic a variety of truck and bus vocations.

David Lyons

2008-03-31T23:59:59.000Z

202

Quantifying Carbon Cycle Feedbacks  

Science Conference Proceedings (OSTI)

Perturbations to the carbon cycle could constitute large feedbacks on future changes in atmospheric CO2 concentration and climate. This paper demonstrates how carbon cycle feedback can be expressed in formally similar ways to climate feedback, ...

J. M. Gregory; C. D. Jones; P. Cadule; P. Friedlingstein

2009-10-01T23:59:59.000Z

203

Edgeworth cycles revisited  

E-Print Network (OSTI)

Some gasoline markets exhibit remarkable price cycles, where price spikes are followed by a series of small price declines: a pattern consistent with a model of Edgeworth cycles described by Maskin and Tirole. We extend ...

Doyle, Joseph J.

204

Comparison of Battery Life Across Real-World Automotive Drive-Cycles (Presentation)  

DOE Green Energy (OSTI)

Laboratories run around-the-clock aging tests to try to understand as quickly as possible how long new Li-ion battery designs will last under certain duty cycles. These tests may include factors such as duty cycles, climate, battery power profiles, and battery stress statistics. Such tests are generally accelerated and do not consider possible dwell time at high temperatures and states-of-charge. Battery life-predictive models provide guidance as to how long Li-ion batteries may last under real-world electric-drive vehicle applications. Worst-case aging scenarios are extracted from hundreds of real-world duty cycles developed from vehicle travel surveys. Vehicles examined included PHEV10 and PHEV40 EDVs under fixed (28 degrees C), limited cooling (forced ambient temperature), and aggressive cooling (20 degrees C chilled liquid) scenarios using either nightly charging or opportunity charging. The results show that battery life expectancy is 7.8 - 13.2 years for the PHEV10 using a nightly charge in Phoenix, AZ (hot climate), and that the 'aggressive' cooling scenario can extend battery life by 1-3 years, while the 'limited' cooling scenario shortens battery life by 1-2 years. Frequent (opportunity) charging can reduce battery life by 1 year for the PHEV10, while frequent charging can extend battery life by one-half year.

Smith, K.; Earleywine, M.; Wood, E.; Pesaran, A.

2011-11-01T23:59:59.000Z

205

WATCH: Current Knowledge of the Terrestrial Global Water Cycle  

Science Conference Proceedings (OSTI)

Water-related impacts are among the most important consequences of increasing greenhouse gas concentrations. Changes in the global water cycle will also impact the carbon and nutrient cycles and vegetation patterns. There is already some evidence ...

Richard Harding; Martin Best; Eleanor Blyth; Stefan Hagemann; Pavel Kabat; Lena M. Tallaksen; Tanya Warnaars; David Wiberg; Graham P. Weedon; Henny van Lanen; Fulco Ludwig; Ingjerd Haddeland

2011-12-01T23:59:59.000Z

206

Cycle to Cycle Manufacturing Process Control  

E-Print Network (OSTI)

Most manufacturing processes produce parts that can only be correctly measured after the process cycle has been completed. Even if in-process measurement and control is possible, it is often too expensive or complex to ...

Hardt, David E.

207

Seasonal Cycles of Precipitation and Precipitable Water and Their Use in Monsoon Onset and Retreat .  

E-Print Network (OSTI)

??Precipitation (P) and precipitable water (W) are important components of the hydrological cycles in the earth system, and their seasonal cycles are closely related to… (more)

Lu, Er

2005-01-01T23:59:59.000Z

208

Nuclear Fuel Cycle | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Cycle Cycle Nuclear Fuel Cycle This is an illustration of a nuclear fuel cycle that shows the required steps to process natural uranium from ore for preparation for fuel to be loaded in nuclear reactors. This is an illustration of a nuclear fuel cycle that shows the required steps to process natural uranium from ore for preparation for fuel to be loaded in nuclear reactors. The mission of NE-54 is primarily focused on activities related to the front end of the nuclear fuel cycle which includes mining, milling, conversion, and enrichment. Uranium Mining Both "conventional" open pit, underground mining, and in situ techniques are used to recover uranium ore. In general, open pit mining is used where deposits are close to the surface and underground mining is used

209

The Doe Water Cycle Pilot Study  

Science Conference Proceedings (OSTI)

A Department of Energy (DOE) multilaboratory Water Cycle Pilot Study (WCPS) investigated components of the local water budget at the Walnut River watershed in Kansas to study the relative importance of various processes and to determine the ...

N. L. Miller; A. W. King; M. A. Miller; E. P. Springer; M. L. Wesely; K. E. Bashford; M. E. Conrad; K. Costigan; P. N. Foster; H. K. Gibbs; J. Jin; J. Klazura; B. M. Lesht; M. V. Machavaram; F. Pan; J. Song; D. Troyan; R. A. Washington-Allen

2005-03-01T23:59:59.000Z

210

The transportable heavy-duty engine emissions testing laboratory. Annual progress report, April 1990--April 1991  

SciTech Connect

West Virginia University has designed and constructed a Transportable Emissions Testing Laboratory for measuring emissions from heavy duty vehicles, such as buses and trucks operating on conventional and alternative fuels. The laboratory facility can be transported to a test site located at, or nearby, the home base of the vehicles to be tested. The laboratory has the capability of measuring vehicle emissions as the vehicle is operated under either transient or steady state loads and speeds. The exhaust emissions from the vehicle is sampled and the levels of the constituents of the emission are measured. The laboratory consists of two major units; a power absorber unit and an emissions measurement unit. A power absorber unit allows for the connection of a dynamic load to the drive train of the vehicle so that the vehicle can be ``driven`` through a test cycle while actually mounted on a stationary test bed. The emissions unit contains instrumentation and equipment which allows for the dilution of the vehicle`s exhaust with air. The diluteed exhaust is sampled and analyzed to measure the level of concentration of those constituents which have been identified to have impact on the clean environment. Sampling probes withdraw diluted exhaust which is supplied to a number of different exhaust gas analysis instruments. The exhaust gas analysis instruments have the capability to measure the levels of the following exhaust gas constituents: carbon monoxide (CO), carbon dioxide (CO{sub 2}), oxides of nitrogen (NO{sub x}), unburned hydrocarbons (HC), formaldehyde (HCHO), methane and particulate matter. Additional instruments or sampling devices can be installed whenever measurements of additional constituents are desired. A computer based, data acquisition system is used to continuously monitor a wide range of parameters important to the operation of the test and to record the test results.

1991-05-01T23:59:59.000Z

211

Non-Cost Barriers to Consumer Adoption of New Light-Duty Vehicle Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

LIGHT-DUTY VEHICLES LIGHT-DUTY VEHICLES Non-Cost Barriers to Consumer Adoption of New Light-Duty Vehicle Technologies TRANSPORTATION ENERGY FUTURES SERIES: Non-Cost Barriers to Consumer Adoption of New Light-Duty Vehicle Technologies A Study Sponsored by U.S. Department of Energy Office of Energy Efficiency and Renewable Energy March 2013 Prepared by ARGONNE NATIONAL LABORATORY Argonne, Illinois 60439 managed by U Chicago Argonne, LLC for the U.S. DEPARTMENT OF ENERGY under contract DE-AC02-06CH11357 This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or

212

Figure 71. Average fuel economy of new light-duty vehicles, 1980 ...  

U.S. Energy Information Administration (EIA)

Sheet3 Sheet2 Sheet1 Figure 71. Average fuel economy of new light-duty vehicles, 1980-2040 (miles per gallon, CAFE compliance values) History Reference case

213

Not going home: Army changes program for active duty Stop Loss, Stop Movement  

E-Print Network (OSTI)

WASHINGTON — Active-duty Soldiers nearing the end of their service contract may not be getting out of the Army as soon as they might have expected. Army officials announced June 1 the latest Active Army

Story Karla; L. Gonzalez

2004-01-01T23:59:59.000Z

214

Can U.S. Supply Accommodate Shifts to Diesel-Fueled Light-Duty Vehicles?  

Reports and Publications (EIA)

The presentation explores if diesel-fueled light-duty vehicle growth in the U.S. might be large enough to create refinery constraints that would hinder that growth.

Information Center

2005-10-12T23:59:59.000Z

215

Emissions Benefits From Renewable Fuels and Other Alternatives for Heavy-Duty Vehicles  

E-Print Network (OSTI)

43 McCormick, 2005 (Canola-1) McCormick,2005 (Soy-1)A: Animal-based; C: Canola; S: Soy-based; H-D: Heavy-Duty H-

Hajbabaei, Maryam

2013-01-01T23:59:59.000Z

216

Increasing the Fuel Economy and Safety of New Light-Duty Vehicles  

E-Print Network (OSTI)

Automotive Technology and Fuel Economy Trends: 1975 Through2004. “The effect of fuel economy on automobile safety: aM. , 2002. “Near-term fuel economy potential for light-duty

Wenzel, Tom; Ross, Marc

2006-01-01T23:59:59.000Z

217

On-Road Development of the C-Gas Plus Engine in Heavy-Duty Vehicles  

Science Conference Proceedings (OSTI)

Fact sheet details on-road development of C-Gas Plus natural gas engine in Viking Freight heavy-duty trucks, including emissions, fuel costs, and petroleum displacement.

Not Available

2003-06-01T23:59:59.000Z

218

Can U.S. Supply Accommodate Shifts to Diesel-Fueled Light-Duty ...  

U.S. Energy Information Administration (EIA)

The presentation explores if diesel-fueled light-duty vehicle growth in the U.S. might be large enough to create refinery constraints that would hinder that growth.

219

Heavy-duty truck population, activity and usage patterns. Final report  

SciTech Connect

The objective of the study was to update the heavy-duty truck (HDT) population, activity (e.g., vehicle miles traveled (VMT), numbers of starts and trips, trip duration, etc.), and usage patterns type of service/business (e.g., delivery, construction, etc.), area of operation (i.e., local, short-haul, long-haul) for HDT`s registered and/or operated in California. The population and activity estimates were done on a weight-class-specific basis light-heavy-duty, medium-heavy-duty and heavy-heavy-duty. Population, activity and usage estimates were based primarily on Department of Motor Vehicles (DMV) registration data and Truck Inventory and Usage Survey (TIUS) data. In addition to the analysis of existing data (i.e., DMV and TIUS), 42 HDTs were fitted with on-board data loggers that recorded numbers of trips and starts, daily VMT and travel by time-of-day.

Fischer, M.

1998-07-01T23:59:59.000Z

220

Utilization of Fuel Consumption Data in an Ecodriving Incentive System for Heavy-Duty Vehicle Drivers  

Science Conference Proceedings (OSTI)

Driver behavior is one of the greatest factors determining fuel consumption and, thus, carbon dioxide emissions from a heavy-duty vehicle. The difference in fuel consumption can be up to 30%, depending on the driver. Education, monitoring, and feedback ...

Heikki Liimatainen

2011-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Design of an instrumented multifunctional foot for application to a heavy duty mobile robot manufacturing system  

E-Print Network (OSTI)

The design of a multifunctional foot for application to a mobile robotic system for heavy duty manufacturing is presented. The requirements for a target manufacturing task are presented and translated into requirements for ...

Menon, Manas Chandran

2008-01-01T23:59:59.000Z

222

Design Evolution, Durability, and Reliability of Alstom Heavy-Duty Combustion Turbines: Pedigree Matrices, Volume 5  

Science Conference Proceedings (OSTI)

Advanced technology heavy-duty combustion turbines carry a degree of technical risk because of new technologies used in their design. This report reviews the design evolution of specific Alstom (formerly ABB) industrial combustion turbines in a standard format, which allows a qualitative and quantitative assessment of the technical risks involved in their operation. The report establishes a pedigree matrix, or qualitative analysis, for standard production and newly introduced heavy-duty combustion turbin...

2011-12-28T23:59:59.000Z

223

Design Evolution, Durability and Reliability of Alstom Heavy-Duty Gas Turbines: Pedigree Matrices, Volume 5  

Science Conference Proceedings (OSTI)

Advanced technology heavy-duty gas turbines carry a degree of technical risk because of new technologies used in their design. This report reviews the design evolution of specific Alstom (formerly ABB) industrial gas turbines in a standard format, which allows a qualitative and quantitative assessment of the technical risks involved in their operation. The report establishes a pedigree matrix, or qualitative analysis, for standard production and newly introduced heavy-duty gas turbines, including ...

2013-12-19T23:59:59.000Z

224

Alternative fuels for heavy duty engines: Status of fleet trials  

DOE Green Energy (OSTI)

The overall objectives of Annex 3 are to collect, assess and disseminate data on the use of methanol and natural gas in heavy duty compression ignition engines. Originally, the objective was directed at methanol, but in 1990 the mandate of Annex 3 was broadened to include natural gas. This is the latest update on field trials using these two fuels. The report outlines progress being made and identifies major trends. The more important events since the last progress report include: the US Environmental Protection Agency (EPA) Certification of Detroit Diesel Corporation's 6V-92 methanol engine; the introduction of transit buses in Windsor, Ontario, Canada, using DDC methanol engines; an introduction of two DDC engined ethanol fueled transit buses at Regina, Saskatchewan, Canada; the testing of catalytic converters, by Detroit Diesel Corporation, with alcohol powered engines; the discontinuance of methanol in MAN engines/buses at Seattle Metro; a tender for over 100 methanol powered transit buses for South Coast Rapid Transit District (SCRTD), Los Angeles, California; the potential purchase of an additional 150 methanol powered buses for SCRTD, in addition to 10 buses for Sacramento Regional Transit District; and, the expanded interest of transit properties in using natural gas in both compressed natural gas (CNG) and liquefied natural gas (LNG) engines. 21 figs.

Not Available

1991-08-01T23:59:59.000Z

225

Nuclear fuel cycle costs  

Science Conference Proceedings (OSTI)

The costs for the back-end of the nuclear fuel cycle, which were developed as part of the Nonproliferation Alternative Systems Assessment Program (NASAP), are presented. Total fuel cycle costs are given for the pressurized water reactor once-through and fuel recycle systems, and for the liquid-metal fast breeder reactor system. These calculations show that fuel cycle costs are a small part of the total power costs. For breeder reactors, fuel cycle costs are about half that of the present once-through system. The total power cost of the breeder reactor system is greater than that of light-water reactor at today's prices for uranium and enrichment.

Burch, W.D.; Haire, M.J.; Rainey, R.H.

1982-02-01T23:59:59.000Z

226

Cycles in fossil diversity  

E-Print Network (OSTI)

Transitions in Global Marine Diversity, Science 281, 1157-know if this cycle is a variation in true diversity or onlyin observed diversity, but either case requires explanation

Rohde, Robert A.; Muller, Richard A.

2004-01-01T23:59:59.000Z

227

Advanced Electric Systems and Aerodynamics for Efficiency Improvements in Heavy Duty Trucks  

Science Conference Proceedings (OSTI)

The Advanced Electric Systems and Aerodynamics for Efficiency Improvements in Heavy Duty Trucks program (DE-FC26-04NT42189), commonly referred to as the AES program, focused on areas that will primarily benefit fuel economy and improve heat rejection while driving over the road. The AES program objectives were to: (1) Analyze, design, build, and test a cooling system that provided a minimum of 10 percent greater heat rejection in the same frontal area with no increase in parasitic fan load. (2) Realize fuel savings with advanced power management and acceleration assist by utilizing an integrated starter/generator (ISG) and energy storage devices. (3) Quantify the effect of aerodynamic drag due to the frontal shape mandated by the area required for the cooling system. The program effort consisted of modeling and designing components for optimum fuel efficiency, completing fabrication of necessary components, integrating these components into the chassis test bed, completing controls programming, and performance testing the system both on a chassis dynamometer and on the road. Emission control measures for heavy-duty engines have resulted in increased engine heat loads, thus introducing added parasitic engine cooling loads. Truck electrification, in the form of thermal management, offers technological solutions to mitigate or even neutralize the effects of this trend. Thermal control offers opportunities to avoid increases in cooling system frontal area and forestall reduced fuel economy brought about by additional aerodynamic vehicle drag. This project explored such thermal concepts by installing a 2007 engine that is compliant with current regulations and bears additional heat rejection associated with meeting these regulations. This newer engine replaced the 2002 engine from a previous project that generated less heat rejection. Advanced power management, utilizing a continuously optimized and controlled power flow between electric components, can offer additional fuel economy benefits to the heavy-duty trucking industry. Control software for power management brings added value to the power distribution and energy storage architecture on board a truck with electric accessories and an ISG. The research team has built upon a previous truck electrification project, formally, 'Parasitic Energy Loss Reduction and Enabling Technologies for Class 7/8 Trucks', DE-FC04-2000AL6701, where the fundamental concept of electrically-driven accessories replacing belt/gear-driven accessories was demonstrated on a Kenworth T2000 truck chassis. The electrical accessories, shown in Figure 1, were controlled to provide 'flow on demand' variable-speed operation and reduced parasitic engine loads for increased fuel economy. These accessories also provided solutions for main engine idle reduction in long haul trucks. The components and systems of the current project have been integrated into the same Kenworth T2000 truck platform. Reducing parasitic engine loading by decoupling accessory loads from the engine and driving them electrically has been a central concept of this project. Belt or gear-driven engine accessories, such as water pump, air conditioning compressor, or air compressor, are necessarily tied to the engine speed dictated by the current vehicle operating conditions. These conventional accessory pumps are sized to provide adequate flow or pressure at low idle or peak torque speeds, resulting in excess flow or pressure at cruising or rated speeds. The excess flow is diverted through a pressure-minimizing device such as a relief valve thereby expending energy to drive unnecessary and inefficient pump operation. This inefficiency causes an increased parasitic load to the engine, which leads to a loss of usable output power and decreased fuel economy. Controlling variable-speed electric motors to provide only the required flow or pressure of a particular accessory system can yield significant increases in fuel economy for a commercial vehicle. Motor loads at relatively high power levels (1-5 kW, or higher) can be efficiently provided

Larry Slone; Jeffrey Birkel

2007-10-31T23:59:59.000Z

228

Advanced Electric Systems and Aerodynamics for Efficiency Improvements in Heavy Duty Trucks  

DOE Green Energy (OSTI)

The Advanced Electric Systems and Aerodynamics for Efficiency Improvements in Heavy Duty Trucks program (DE-FC26-04NT42189), commonly referred to as the AES program, focused on areas that will primarily benefit fuel economy and improve heat rejection while driving over the road. The AES program objectives were to: (1) Analyze, design, build, and test a cooling system that provided a minimum of 10 percent greater heat rejection in the same frontal area with no increase in parasitic fan load. (2) Realize fuel savings with advanced power management and acceleration assist by utilizing an integrated starter/generator (ISG) and energy storage devices. (3) Quantify the effect of aerodynamic drag due to the frontal shape mandated by the area required for the cooling system. The program effort consisted of modeling and designing components for optimum fuel efficiency, completing fabrication of necessary components, integrating these components into the chassis test bed, completing controls programming, and performance testing the system both on a chassis dynamometer and on the road. Emission control measures for heavy-duty engines have resulted in increased engine heat loads, thus introducing added parasitic engine cooling loads. Truck electrification, in the form of thermal management, offers technological solutions to mitigate or even neutralize the effects of this trend. Thermal control offers opportunities to avoid increases in cooling system frontal area and forestall reduced fuel economy brought about by additional aerodynamic vehicle drag. This project explored such thermal concepts by installing a 2007 engine that is compliant with current regulations and bears additional heat rejection associated with meeting these regulations. This newer engine replaced the 2002 engine from a previous project that generated less heat rejection. Advanced power management, utilizing a continuously optimized and controlled power flow between electric components, can offer additional fuel economy benefits to the heavy-duty trucking industry. Control software for power management brings added value to the power distribution and energy storage architecture on board a truck with electric accessories and an ISG. The research team has built upon a previous truck electrification project, formally, 'Parasitic Energy Loss Reduction and Enabling Technologies for Class 7/8 Trucks', DE-FC04-2000AL6701, where the fundamental concept of electrically-driven accessories replacing belt/gear-driven accessories was demonstrated on a Kenworth T2000 truck chassis. The electrical accessories, shown in Figure 1, were controlled to provide 'flow on demand' variable-speed operation and reduced parasitic engine loads for increased fuel economy. These accessories also provided solutions for main engine idle reduction in long haul trucks. The components and systems of the current project have been integrated into the same Kenworth T2000 truck platform. Reducing parasitic engine loading by decoupling accessory loads from the engine and driving them electrically has been a central concept of this project. Belt or gear-driven engine accessories, such as water pump, air conditioning compressor, or air compressor, are necessarily tied to the engine speed dictated by the current vehicle operating conditions. These conventional accessory pumps are sized to provide adequate flow or pressure at low idle or peak torque speeds, resulting in excess flow or pressure at cruising or rated speeds. The excess flow is diverted through a pressure-minimizing device such as a relief valve thereby expending energy to drive unnecessary and inefficient pump operation. This inefficiency causes an increased parasitic load to the engine, which leads to a loss of usable output power and decreased fuel economy. Controlling variable-speed electric motors to provide only the required flow or pressure of a particular accessory system can yield significant increases in fuel economy for a commercial vehicle. Motor loads at relatively high power levels (1-5 kW, or higher) can be efficiently provided

Larry Slone; Jeffrey Birkel

2007-10-31T23:59:59.000Z

229

MHK Technologies/Closed Cycle OTEC | Open Energy Information  

Open Energy Info (EERE)

Closed Cycle OTEC Closed Cycle OTEC < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Closed Cycle OTEC.jpg Technology Profile Primary Organization Marine Development Associates Inc Technology Resource Click here OTEC Technology Type Click here OTEC - Closed Cycle Technology Description Closed Cycle System Technology Dimensions Device Testing Date Submitted 02:50.8 << Return to the MHK database homepage Retrieved from "http://en.openei.org/w/index.php?title=MHK_Technologies/Closed_Cycle_OTEC&oldid=681555" Category: Marine and Hydrokinetic Technologies What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load)

230

Cell cycle nucleic acids, polypeptides and uses thereof  

DOE Patents (OSTI)

The invention provides isolated nucleic acids and their encoded proteins that are involved in cell cycle regulation. The invention further provides recombinant expression cassettes, host cells, transgenic plants, and antibody compositions. The present invention provides methods and compositions relating to altering cell cycle protein content, cell cycle progression, cell number and/or composition of plants.

Gordon-Kamm, William J. (Urbandale, IA); Lowe, Keith S. (Johnston, IA); Larkins, Brian A. (Tucson, AZ); Dilkes, Brian R. (Tucson, AZ); Sun, Yuejin (Westfield, IN)

2007-08-14T23:59:59.000Z

231

A Vector Approach to Regression Analysis and Its Implications to Heavy-Duty Diesel Emissions  

DOE Green Energy (OSTI)

An alternative approach is presented for the regression of response data on predictor variables that are not logically or physically separable. The methodology is demonstrated by its application to a data set of heavy-duty diesel emissions. Because of the covariance of fuel properties, it is found advantageous to redefine the predictor variables as vectors, in which the original fuel properties are components, rather than as scalars each involving only a single fuel property. The fuel property vectors are defined in such a way that they are mathematically independent and statistically uncorrelated. Because the available data set does not allow definitive separation of vehicle and fuel effects, and because test fuels used in several of the studies may be unrealistically contrived to break the association of fuel variables, the data set is not considered adequate for development of a full-fledged emission model. Nevertheless, the data clearly show that only a few basic patterns of fuel-property variation affect emissions and that the number of these patterns is considerably less than the number of variables initially thought to be involved. These basic patterns, referred to as ''eigenfuels,'' may reflect blending practice in accordance with their relative weighting in specific circumstances. The methodology is believed to be widely applicable in a variety of contexts. It promises an end to the threat of collinearity and the frustration of attempting, often unrealistically, to separate variables that are inseparable.

McAdams, H.T.

2001-02-14T23:59:59.000Z

232

Predicting Light-Duty Vehicle Fuel Economy as a Function of Highway Speed  

SciTech Connect

The www.fueleconomy.gov website offers information such as window label fuel economy for city, highway, and combined driving for all U.S.-legal light-duty vehicles from 1984 to the present. The site is jointly maintained by the U.S. Department of Energy and the U.S. Environmental Protection Agency (EPA), and also offers a considerable amount of consumer information and advice pertaining to vehicle fuel economy and energy related issues. Included with advice pertaining to driving styles and habits is information concerning the trend that as highway cruising speed is increased, fuel economy will degrade. An effort was undertaken to quantify this conventional wisdom through analysis of dynamometer testing results for 74 vehicles at steady state speeds from 50 to 80 mph. Using this experimental data, several simple models were developed to predict individual vehicle fuel economy and its rate of change over the 50-80 mph speed range interval. The models presented require a minimal number of vehicle attributes. The simplest model requires only the EPA window label highway mpg value (based on the EPA specified estimation method for 2008 and beyond). The most complex of these simple model uses vehicle coast-down test coefficients (from testing prescribed by SAE Standard J2263) known as the vehicle Target Coefficients, and the raw fuel economy result from the federal highway test. Statistical comparisons of these models and discussions of their expected usefulness and limitations are offered.

Thomas, John F [ORNL; Hwang, Ho-Ling [ORNL; West, Brian H [ORNL; Huff, Shean P [ORNL

2013-01-01T23:59:59.000Z

233

Power Plant Cycling Costs  

Science Conference Proceedings (OSTI)

This report provides a detailed review of the most up to date data available on power plant cycling costs. The primary objective of this report is to increase awareness of power plant cycling cost, the use of these costs in renewable integration studies and to stimulate debate between policymakers, system dispatchers, plant personnel and power utilities.

Kumar, N.; Besuner, P.; Lefton, S.; Agan, D.; Hilleman, D.

2012-07-01T23:59:59.000Z

234

Truck Essential Power Systems Efficiency Improvements for Medium-Duty Trucks  

DOE Green Energy (OSTI)

With a variety of hybrid vehicles available in the passenger car market, electric technologies and components of that scale are becoming readily available. Commercial vehicle segments have lagged behind passenger car markets, leaving opportunities for component and system development. Escalating fuel prices impact all markets and provide motivation for OEMs, suppliers, customers, and end-users to seek new techniques and technologies to deliver reduced fuel consumption. The research presented here specifically targets the medium-duty (MD), Class 4-7, truck market with technologies aimed at reducing fuel consumption. These technologies could facilitate not only idle, but also parasitic load reductions. The development efforts here build upon the success of the More Electric Truck (MET) demonstration program at Caterpillar Inc. Employing a variety of electric accessories, the MET demonstrated the improvement seen with such technologies on a Class 8 truck. The Truck Essential Power Systems Efficiency Improvements for Medium-Duty Trucks (TEPS) team scaled the concepts and successes of MET to a MD chassis. The team designed an integrated starter/generator (ISG) package and energy storage system (ESS), explored ways to replace belt and gear-driven accessory systems, and developed supervisory control algorithms to direct the usage of the generated electricity and system behavior on the vehicle. All of these systems needed to fit within the footprint of a MD vehicle and be compatible with the existing conventional systems to the largest extent possible. The overall goal of this effort was to demonstrate a reduction in fuel consumption across the drive cycle, including during idle periods, through truck electrification. Furthermore, the team sought to evaluate the benefits of charging the energy storage system during vehicle braking. The vehicle features an array of electric accessories facilitating on-demand, variable actuation. Removal of these accessories from the belt or geartrain of the engine yields efficiency improvements for the engine while freeing those accessories to perform at their individual peak efficiencies to meet instantaneous demand. The net result is a systems approach to fuel usage optimization. Unique control algorithms were specifically developed to capitalize on the flexibility afforded by the TEPS architecture. Moreover, the TEPS truck technology mixture exhibits a means to supplant current accessory power sources such as on-board or trailer-mounted gasoline-powered generators or air compressors. Such functionality further enhances the value of the electric systems beyond the fuel savings alone. To demonstrate the fuel economy improvement wrought via the TEPS components, vehicle fuel economy testing was performed on the nearly stock (baseline) truck and the TEPS truck. Table 1 illustrates the fuel economy gains produced by the TEPS truck electrification. While the fuel economy results shown in Table 1 do reflect specific test conditions, they show that electrification of accessory hardware can yield significant fuel savings. In this case, the savings equated to a 15 percent reduction in fuel consumption during controlled on-road testing. Truck electrification allows engine shutdown during idle conditions as well as independent on-demand actuation of accessory systems. In some cases, independent actuation may even include lack of operation, a feature not always present in mechanically driven components. This combination of attributes allows significant improvements in system efficiency and the fuel economy improvements demonstrated by the TEPS team.

Larry Slone; Jeffery Birkel

2007-12-31T23:59:59.000Z

235

Demonstrating and evaluating heavy-duty alternative fuel operations  

DOE Green Energy (OSTI)

The principal objectives of this project was to understand the effects of using an alternative fuel on a truck operating fleet through actual operation of trucks. Information to be gathered was expected to be anecdotal, as opposed to statistically viable, because the Trucking Research institute (TRI) recognized that projects could not attract enough trucks to produce statistically credible volumes of data. TRI was to collect operational data, and provide them to NREL, who would enter the data into the alternative fuels database being constructed for heavy-duty trucks at the time. NREL would also perform data analysis, with the understanding that the demonstrations were generally pre-production model engines and vehicles. Other objectives included providing information to the trucking industry on the availability of alternative fuels, developing the alternative fuels marketplace, and providing information on experience with alternative fuels. In addition to providing information to the trucking industry, an objective was for TRI to inform NREL and DOE about the industry, and give feedback on the response of the industry to developments in alternative fuels in trucking. At the outset, only small numbers of vehicles participated in most of the projects. Therefore, they had to be considered demonstrations of feasibility, rather than data gathering tests from which statistically significant conclusions might be drawn. Consequently, data gathered were expected to be useful for making estimates and obtaining valuable practical lessons. Project data and lessons learned are the subjects of separate project reports. This report concerns itself with the work of TRI in meeting the overall objectives of the TRI-NREL partnership.

Peerenboom, W. [Trucking Research Inst., Alexandria, VA (United States)] [Trucking Research Inst., Alexandria, VA (United States)

1998-02-01T23:59:59.000Z

236

GPS Data Filtration Method for Drive Cycle Analysis Applications  

SciTech Connect

When employing GPS data acquisition systems to capture vehicle drive-cycle information, a number of errors often appear in the raw data samples, such as sudden signal loss, extraneous or outlying data points, speed drifting, and signal white noise, all of which limit the quality of field data for use in downstream applications. Unaddressed, these errors significantly impact the reliability of source data and limit the effectiveness of traditional drive-cycle analysis approaches and vehicle simulation software. Without reliable speed and time information, the validity of derived metrics for drive cycles, such as acceleration, power, and distance, become questionable. This study explores some of the common sources of error present in raw onboard GPS data and presents a detailed filtering process designed to correct for these issues. Test data from both light and medium/heavy duty applications are examined to illustrate the effectiveness of the proposed filtration process across the range of vehicle vocations. Graphical comparisons of raw and filtered cycles are presented, and statistical analyses are performed to determine the effects of the proposed filtration process on raw data. Finally, an evaluation of the overall benefits of data filtration on raw GPS data and present potential areas for continued research is presented.

Duran, A.; Earleywine, M.

2013-02-01T23:59:59.000Z

237

Ignition assist systems for direct-injected, diesel cycle, medium-duty alternative fuel engines: Final report phase 1  

DOE Green Energy (OSTI)

This report is a summary of the results of Phase 1 of this contract. The objective was to evaluate the potential of assist technologies for direct-injected alternative fuel engines vs. glow plug ignition assist. The goal was to demonstrate the feasibility of an ignition system life of 10,000 hours and a system cost of less than 50% of the glow plug system, while meeting or exceeding the engine thermal efficiency obtained with the glow plug system. There were three tasks in Phase 1. Under Task 1, a comprehensive review of feasible ignition options for DING engines was completed. The most promising options are: (1) AC and the ''SmartFire'' spark, which are both long-duration, low-power (LDLP) spark systems; (2) the short-duration, high-power (SDHP) spark system; (3) the micropilot injection ignition; and (4) the stratified charge plasma ignition. Efforts concentrated on investigating the AC spark, SmartFire spark, and short-duration/high-power spark systems. Using proprietary pricing information, the authors predicted that the commercial costs for the AC spark, the short-duration/high-power spark and SmartFire spark systems will be comparable (if not less) to the glow plug system. Task 2 involved designing and performing bench tests to determine the criteria for the ignition system and the prototype spark plug for Task 3. The two most important design criteria are the high voltage output requirement of the ignition system and the minimum electrical insulation requirement for the spark plug. Under Task 3, all the necessary hardware for the one-cylinder engine test was designed. The hardware includes modified 3126 cylinder heads, specially designed prototype spark plugs, ignition system electronics, and parts for the system installation. Two 3126 cylinder heads and the SmartFire ignition system were procured, and testing will begin in Phase 2 of this subcontract.

Chan, A.K.

2000-02-23T23:59:59.000Z

238

An Economic Analysis of Select Fuel Cycles Using the Steady-State Analysis Model for Advanced Fuel Cycles Schemes (SMAFS)  

Science Conference Proceedings (OSTI)

The U.S. Department of Energy's (DOE) Global Nuclear Energy Partnership (GNEP) is currently considering alternatives to the current U.S. once-through fuel cycle. This report evaluates the relative economics of three alternative fuel cycles to determine those cost components important to overall fuel cycle costs and total generation costs. The analysis determined that the unit cost of nuclear reactors is the most important nuclear generation cost parameter in future fuel cycles. The report also evaluates ...

2007-12-20T23:59:59.000Z

239

An Emission Saved is an Emission Earned: An Empirical Study of Emission Banking for Light-Duty Vehicle Manufacturers  

E-Print Network (OSTI)

costs across vehicles and manufacturers are equal. In thefor individual vehicles and manufacturers differ from thefor Light-Duty Vehicle Manufacturers Jonathan D. Rubin

Rubin, Jonathan D.; Kling, Catherine

1993-01-01T23:59:59.000Z

240

The Anderson Quin Cycle  

SciTech Connect

The objective of this study was to make a more refined evaluation of the Anderson Quin Cycle based on most recent information on the performance of various elements that will be used in the Anderson Quin Cycle. My original estimate of the work plan for evaluating and optimizing the Anderson Quin Cycle called for 7000 man hours of work. Since this grant was limited to 2150 man hours, we could not expect to achieve all the objectives within the allotted period of work. However, the most relevant program objectives have been completed as reported here. The analysis generally confirms the results originally estimated in my paper on the subject. (Ref. 2) Further optimizations should show even higher efficiencies. The Anderson Quin Cycle (US Patent applied for) basically consists of 5 elements in the power cycle: A refrigeration system to cool and clean the inlet air before it enters the compressor that supplies air for the gas turbine; a gas turbine consisting of a compressor, combustor, and turbine; a steam boiler and steam turbine system using the heat from the exhaust gas out of the gas turbine; a vapor turbine cycle, which utilizes the condensed heat from the exhaust of the steam turbine and the exhaust gas heat leaving the steam boiler to operate a vapor turbine cycle which utilizes another fluid than water, in this case isobutane; and the fifth element consists of a gas cooler and heat pump system, which removes the heat from the exhaust gas to lower its temperature essentially to atmospheric temperature, and at the same time permits treatment of the exhaust gas to remove acid components such as sulfur dioxide and nitrogen oxides. Current industry accepted component characteristics were incorporated in the performance analysis of the overall cycle, ensuring accurate and meaningful operating predictions. The characteristics and performance of each of the elements are described. The thermal efficiency of the optimized calculated Anderson Quin Cycle is 62 percent.

Anderson, J.H.; Bilbow, W.M.

1993-03-18T23:59:59.000Z

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

GREET 1.5 - transportation fuel-cycle model - Vol. 1 : methodology, development, use, and results.  

DOE Green Energy (OSTI)

This report documents the development and use of the most recent version (Version 1.5) of the Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation (GREET) model. The model, developed in a spreadsheet format, estimates the full fuel-cycle emissions and energy associated with various transportation fuels and advanced vehicle technologies for light-duty vehicles. The model calculates fuel-cycle emissions of five criteria pollutants (volatile organic compounds, carbon monoxide, nitrogen oxides, particulate matter with diameters of 10 micrometers or less, and sulfur oxides) and three greenhouse gases (carbon dioxide, methane, and nitrous oxide). The model also calculates total energy consumption, fossil fuel consumption, and petroleum consumption when various transportation fuels are used. The GREET model includes the following cycles: petroleum to conventional gasoline, reformulated gasoline, conventional diesel, reformulated diesel, liquefied petroleum gas, and electricity via residual oil; natural gas to compressed natural gas, liquefied natural gas, liquefied petroleum gas, methanol, Fischer-Tropsch diesel, dimethyl ether, hydrogen, and electricity; coal to electricity; uranium to electricity; renewable energy (hydropower, solar energy, and wind) to electricity; corn, woody biomass, and herbaceous biomass to ethanol; soybeans to biodiesel; flared gas to methanol, dimethyl ether, and Fischer-Tropsch diesel; and landfill gases to methanol. This report also presents the results of the analysis of fuel-cycle energy use and emissions associated with alternative transportation fuels and advanced vehicle technologies to be applied to passenger cars and light-duty trucks.

Wang, M. Q.

1999-10-06T23:59:59.000Z

242

Evaluation of unthrottled combustion system options for light duty applications with future syncrude derived fuels. Alternative Fuels Utilization Program  

DOE Green Energy (OSTI)

An experimental program examining the interaction between several fuel and light duty automotive engine combinations is detailed. Combustion systems addressed covered indirect and direct injection diesel and spark ignited stratified charge. Fuels primarily covered D2, naphtha and intermediate broadcut blends. Low ignition quality diesel fuels were also evaluated. The results indicate the baseline fuel tolerance of each combustion system and enable characteristics of the systems to be compared. Performance, gaseous and particulate emissions aspects were assessed. The data obtained assists in the selection of candidate combustion systems for potential future fuels. Performance and environmental penalties as appropriate are highlighted relative to the individual candidates. Areas of further work for increased understanding are also reviewed.

Needham, J. R.; Cooper, B. M.; Norris-Jones, S. R.

1982-12-01T23:59:59.000Z

243

Clean Cities Guide to Alternative Fuel and Advanced Medium- and Heavy-Duty Vehicles (Book), Clean Cities, Energy Efficiency & Renewable Energy (EERE)  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

School Bus * Shuttle Bus * Transit Bus * Refuse Truck * Tractor * Van * Vocational Truck School Bus * Shuttle Bus * Transit Bus * Refuse Truck * Tractor * Van * Vocational Truck Clean Cities Guide to Alternative Fuel and Advanced Medium- and Heavy-Duty Vehicles Clean Cities Guide to Alternative Fuel and Advanced Medium- and Heavy-Duty Vehicles 2 Clean Cities Guide to Alternative Fuel and Advanced Medium- and Heavy-Duty Vehicles 3 Table of Contents About the Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Heavy-Duty Vehicle Application Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Heavy-Duty Emission Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Multiple-Stage Construction of Medium- and Heavy-Duty Vehicles . . . . . . . . . . . . . . . . . . 6 Chassis Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

244

Cycle isolation monitoring  

SciTech Connect

There are many factors to monitor in power plants, but one that is frequently overlooked is cycle isolation. Often this is an area where plant personnel can find 'low hanging fruit' with great return on investment, especially high energy valve leakage. This type of leakage leads to increased heat rate, potential valve damage and lost generation. The fundamental question to ask is 'What is 100 Btu/kW-hr of heat rate worth to your plant? On a 600 MW coal-fired power plant, a 1% leakage can lead to an 81 Btu/kW-hr impact on the main steam cycle and a 64 Btu/kW-hr impact on the hot reheat cycle. The article gives advice on methods to assist in detecting leaking valves and to monitor cycle isolation. A software product, TP. Plus-CIM was designed to estimate flow rates of potentially leaking valves.

Svensen, L.M. III; Zeigler, J.R.; Todd, F.D.; Alder, G.C. [Santee Copper, Moncks Corner, SC (United States)

2009-07-15T23:59:59.000Z

245

Crude Oil Price Cycles  

U.S. Energy Information Administration (EIA)

The heating oil and diesel price runups in late January were made even more problematic by coming on top of the high side of the latest crude market cycle.

246

Cycle Chemistry Improvement Program  

Science Conference Proceedings (OSTI)

The purity of water and steam is central to ensuring fossil plant component availability and reliability. This report, which describes formal cycle chemistry improvement programs at nine utilities, will assist utilities in achieving significant operation and maintenance cost reductions.

1997-04-21T23:59:59.000Z

247

Crude Oil Price Cycles  

Gasoline and Diesel Fuel Update (EIA)

The heating oil and diesel fuel price runups in late January were made even more problematic by coming on top of the high side of the latest crude market cycle. Over the past 10...

248

The Carbon Cycle  

NLE Websites -- All DOE Office Websites (Extended Search)

The Carbon Cycle The Carbon Cycle The global carbon cycle involves the carbon in and exchanging between the earth's atmosphere, fossil fuels, the oceans, and the vegetation and soils of the earth's terrestrial ecosystems. image Each year, the world's terrestrial ecosystems withdraw carbon from the atmosphere through photosynthesis and add it again through respiration and decay. A more detailed look at the global carbon cycle for the 1990s is shown below. The main annual fluxes in GtC yr-1 are: pre-industrial "natural" fluxes in black and "anthropogenic" fluxes in red (modified from Sarmiento and Gruber, 2006, with changes in pool sizes from Sabine et al., 2004a). The net terrestrial loss of -39 GtC is inferred from cumulative fossil fuel emissions minus atmospheric increase minus ocean storage. The loss of

249

Simulated fuel economy and emissions performance during city and interstate driving for a heavy-duty hybrid truck  

Science Conference Proceedings (OSTI)

We compare simulated fuel economy and emissions for both conventional and hybrid class 8 heavy-duty diesel trucks operating over multiple urban and highway driving cycles. Both light and heavy freight loads were considered, and all simulations included full aftertreatment for NOx and particulate emissions controls. The aftertreatment components included a diesel oxidation catalyst (DOC), urea-selective catalytic NOx reduction (SCR), and a catalyzed diesel particulate filter (DPF). Our simulated hybrid powertrain was configured with a pre-transmission parallel drive, with a single electric motor between the clutch and gearbox. A conventional HD truck with equivalent diesel engine and aftertreatment was also simulated for comparison. Our results indicate that hybridization can significantly increase HD fuel economy and improve emissions control in city driving. However, there is less potential hybridization benefit for HD highway driving. A major factor behind the reduced hybridization benefit for highway driving is that there are fewer opportunities to utilize regenerative breaking. Our aftertreatment simulations indicate that opportunities for passive DPF regeneration are much greater for both hybrid and conventional trucks during highway driving due to higher sustained exhaust temperatures. When passive DPF regeneration is extensively utilized, the fuel penalty for particulate control is virtually eliminated, except for the 0.4%-0.9% fuel penalty associated with the slightly higher exhaust backpressure.

Daw, C Stuart [ORNL; Gao, Zhiming [ORNL; Smith, David E [ORNL; LaClair, Tim J [ORNL; Pihl, Josh A [ORNL; Edwards, Kevin Dean [ORNL

2013-01-01T23:59:59.000Z

250

Secular Cycles and Millennial Trends  

E-Print Network (OSTI)

both secular cycles and millennial up- ward trend dynamics.Cycles and Millennial Trends by Andrey Korotayev, ArtemySecular Cycles and Millennial Trends 1 Initially, we want to

Korotayev, Andrey V; Malkov, Artemy S; Khaltourina, Daria A

2006-01-01T23:59:59.000Z

251

Producing persistent, high-current, high-duty-factor H{sup -} beams for routine 1 MW operation of Spallation Neutron Source (invited)  

Science Conference Proceedings (OSTI)

Since 2009, the Spallation Neutron Source (SNS) has been producing neutrons with ion beam powers near 1 MW, which requires the extraction of {approx}50 mA H{sup -} ions from the ion source with a {approx}5% duty factor. The 50 mA are achieved after an initial dose of {approx}3 mg of Cs and heating the Cs collar to {approx}170 deg. C. The 50 mA normally persist for the entire 4-week source service cycles. Fundamental processes are reviewed to elucidate the persistence of the SNS H{sup -} beams without a steady feed of Cs and why the Cs collar temperature may have to be kept near 170 deg. C.

Stockli, Martin P.; Han, B. X.; Hardek, T. W.; Kang, Y. W.; Murray, S. N.; Pennisi, T. R.; Piller, C.; Santana, M.; Welton, R. [Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

2012-02-15T23:59:59.000Z

252

Posted 3/23/12 The duties listed in this job description are meant to provide a reasonable expectation of duties related to this position.  

E-Print Network (OSTI)

cost reduction projects. Develop and maintain accurate BOM's and production routings. Processing schedules; estimating future requirements. Prepares product and process reports by collecting, analyzing and/or processing issues. Keeps equipment operational by coordinating maintenance and repair services

Heller, Barbara

253

Carports with Solar Panels do Double Duty for Navy | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Carports with Solar Panels do Double Duty for Navy Carports with Solar Panels do Double Duty for Navy Carports with Solar Panels do Double Duty for Navy May 14, 2010 - 12:22pm Addthis Joshua DeLung What does this project do? In total, all of China Lake's solar PV projects generate enough electricity a year to power up to 1,200 houses on the grid provided by Southern California Edison, the local utility. The base estimates that it saves about $557,000 a year from the solar panels. At Naval Air Weapons Station China Lake, heat is a fact of life. The base is located on the edge of the Mojave Desert near Ridgecrest, Calif., where the blistering summer heat can actually peel the paint off cars. Longtime desert residents know how to deal with it, but thanks to an ongoing environmental program, many base employees no longer have to do so. Since

254

Top U.S. Automakers Collaborate to Improve Heavy-Duty Freight Efficiency |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Top U.S. Automakers Collaborate to Improve Heavy-Duty Freight Top U.S. Automakers Collaborate to Improve Heavy-Duty Freight Efficiency Top U.S. Automakers Collaborate to Improve Heavy-Duty Freight Efficiency November 22, 2013 - 5:37pm Addthis As part of the 21st Century Truck Partnership, the Army will demonstrate technology that converts waste heat from an exhaust system to electricity used in its Stryker vehicle. | Photo courtesy of courtesy of U.S. Army As part of the 21st Century Truck Partnership, the Army will demonstrate technology that converts waste heat from an exhaust system to electricity used in its Stryker vehicle. | Photo courtesy of courtesy of U.S. Army Natalie Committee Communications Specialist, Office of Energy Efficiency and Renewable Energy Detroit, the hub of America's automotive industry hosted a gathering of

255

Advanced Technologies for Light-Duty Vehicles (released in AEO2006)  

Reports and Publications (EIA)

A fundamental concern in projecting the future attributes of light-duty vehiclespassenger cars, sport utility vehicles, pickup trucks, and minivans is how to represent technological change and the market forces that drive it. There is always considerable uncertainty about the evolution of existing technologies, what new technologies might emerge, and how consumer preferences might influence the direction of change. Most of the new and emerging technologies expected to affect the performance and fuel use of light-duty vehicles over the next 25 years are represented in NEMS; however, the potential emergence of new, unforeseen technologies makes it impossible to address all the technology options that could come into play. The previous section of Issues in Focus discussed several potential technologies that currently are not represented in NEMS. This section discusses some of the key technologies represented in NEMS that are expected to be implemented in light-duty vehicles over the next 25 years.

Information Center

2006-02-01T23:59:59.000Z

256

Advanced Fuel Cycle Cost Basis  

SciTech Connect

This report, commissioned by the U.S. Department of Energy (DOE), provides a comprehensive set of cost data supporting a cost analysis for the relative economic comparison of options for use in the Advanced Fuel Cycle Initiative (AFCI) Program. The report describes the AFCI cost basis development process, reference information on AFCI cost modules, a procedure for estimating fuel cycle costs, economic evaluation guidelines, and a discussion on the integration of cost data into economic computer models. This report contains reference cost data for 25 cost modules—23 fuel cycle cost modules and 2 reactor modules. The cost modules were developed in the areas of natural uranium mining and milling, conversion, enrichment, depleted uranium disposition, fuel fabrication, interim spent fuel storage, reprocessing, waste conditioning, spent nuclear fuel (SNF) packaging, long-term monitored retrievable storage, near surface disposal of low-level waste (LLW), geologic repository and other disposal concepts, and transportation processes for nuclear fuel, LLW, SNF, transuranic, and high-level waste.

D. E. Shropshire; K. A. Williams; W. B. Boore; J. D. Smith; B. W. Dixon; M. Dunzik-Gougar; R. D. Adams; D. Gombert; E. Schneider

2009-12-01T23:59:59.000Z

257

Combined-cycle power tower  

DOE Green Energy (OSTI)

This paper evaluates a new power tower concept that offers significant benefits for commercialization of power tower technology. The concept uses a molten nitrate salt centralreceiver plant to supply heat, in the form of combustion air preheat, to a conventional combined-cycle power plant. The evaluation focused on first commercial plants, examined three plant capacities (31, 100, and 300 MWe), and compared these plants with a solar-only 100-MWe plant and with gas-only combined-cycle plants in the same three capacities. Results of the analysis point to several benefits relative to the solar-only plant including low energy cost for first plants, low capital cost for first plants, reduced risk with respect to business uncertainties, and the potential for new markets. In addition, the concept appears to have minimal technology development requirements. Significantly, the results show that it is possible to build a first plant with this concept that can compete with existing gas-only combined-cycle plants.

Bohn, M.S.; Williams, T.A.; Price, H.W.

1994-10-01T23:59:59.000Z

258

Advanced Fuel Cycle Cost Basis  

SciTech Connect

This report, commissioned by the U.S. Department of Energy (DOE), provides a comprehensive set of cost data supporting a cost analysis for the relative economic comparison of options for use in the Advanced Fuel Cycle Initiative (AFCI) Program. The report describes the AFCI cost basis development process, reference information on AFCI cost modules, a procedure for estimating fuel cycle costs, economic evaluation guidelines, and a discussion on the integration of cost data into economic computer models. This report contains reference cost data for 25 cost modules—23 fuel cycle cost modules and 2 reactor modules. The cost modules were developed in the areas of natural uranium mining and milling, conversion, enrichment, depleted uranium disposition, fuel fabrication, interim spent fuel storage, reprocessing, waste conditioning, spent nuclear fuel (SNF) packaging, long-term monitored retrievable storage, near surface disposal of low-level waste (LLW), geologic repository and other disposal concepts, and transportation processes for nuclear fuel, LLW, SNF, transuranic, and high-level waste.

D. E. Shropshire; K. A. Williams; W. B. Boore; J. D. Smith; B. W. Dixon; M. Dunzik-Gougar; R. D. Adams; D. Gombert; E. Schneider

2008-03-01T23:59:59.000Z

259

Advanced Fuel Cycle Cost Basis  

SciTech Connect

This report, commissioned by the U.S. Department of Energy (DOE), provides a comprehensive set of cost data supporting a cost analysis for the relative economic comparison of options for use in the Advanced Fuel Cycle Initiative (AFCI) Program. The report describes the AFCI cost basis development process, reference information on AFCI cost modules, a procedure for estimating fuel cycle costs, economic evaluation guidelines, and a discussion on the integration of cost data into economic computer models. This report contains reference cost data for 26 cost modules—24 fuel cycle cost modules and 2 reactor modules. The cost modules were developed in the areas of natural uranium mining and milling, conversion, enrichment, depleted uranium disposition, fuel fabrication, interim spent fuel storage, reprocessing, waste conditioning, spent nuclear fuel (SNF) packaging, long-term monitored retrievable storage, near surface disposal of low-level waste (LLW), geologic repository and other disposal concepts, and transportation processes for nuclear fuel, LLW, SNF, and high-level waste.

D. E. Shropshire; K. A. Williams; W. B. Boore; J. D. Smith; B. W. Dixon; M. Dunzik-Gougar; R. D. Adams; D. Gombert

2007-04-01T23:59:59.000Z

260

Fuel Cycle and Isotopes Division  

NLE Websites -- All DOE Office Websites (Extended Search)

Divisions Fuel Cycle and Isotopes Division Jeffrey Binder, Division Director Jeffrey Binder, Division Director The Fuel Cycle and Isotopes Division (FCID) of the Nuclear Science...

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

GEI 41040G - Specification for Fuel Gases for COmbustion in Heavy-Duty Gas Turbines  

NLE Websites -- All DOE Office Websites (Extended Search)

Gas Turbine Gas Turbine Revised, January 2002 GEI 41040G These instructions do not purport to cover all details or variations in equipment nor to provide for every possible contingency to be met in connection with installation, operation or maintenance. Should further information be desired or should particular problems arise which are not covered sufficiently for the purchaser's purposes the matter should be referred to the GE Company. © 1999 GENERAL ELECTRIC COMPANY Specification for Fuel Gases for Combustion in Heavy-Duty Gas Turbines GEI 41040G Specification for Fuel Gases for Combustion in Heavy-Duty Gas Turbines 2 TABLE OF CONTENTS I. INTRODUCTION 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

262

U.S. DRIVE Highlights of Technical Accomplishments 2011: Super Duty Diesel Truck with NOx Aftertreatment  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2011 U.S. DRIVE Highlight Advanced Combustion and Emission Control 2011 Super Duty Diesel Truck with NO x Aftertreatment Diesel engine aftertreatment: Minimizing NO x emissions with SCR. Ford's 2011 Super Duty diesel truck-which utilizes aftertreatment technology jointly developed by Ford and the U.S. Department of Energy (DOE)-deliv- ered a multitude of firsts for the company. It was the first Ford diesel engine developed entirely in-house, the first to operate on B20 (a blend of 20% biofuel, 80% petroleum diesel), and the first to comply with

263

Design Evolution, Durability and Reliability of Mitsubishi Heavy-Duty Gas Turbines  

Science Conference Proceedings (OSTI)

Advanced, heavy-duty gas turbines carry a degree of technical risk because of new technologies incorporated into their designs. This report reviews the design evolution of specific Mitsubishi Heavy Industries, Ltd., heavy-duty industrial gas turbines in a standard format that facilitates an assessment of technical risks involved in their operation. The pedigree matrix includes performance and design features of the M501D/701D, M501F/701F, M501G/701G, M501H/701H, and M501J/701J machines. The report ...

2012-11-28T23:59:59.000Z

264

Fuel Economy of the Light-Duty Vehicle Fleet (released in AEO2005)  

Reports and Publications (EIA)

The U.S. fleet of light-duty vehicles consists of cars and light trucks, including minivans, sport utility vehicles (SUVs) and trucks with gross vehicle weight less than 8,500 pounds. The fuel economy of light-duty vehicles is regulated by the CAFE standards set by NHTSA. Currently, the CAFE standard is 27.5 miles per gallon (mpg) for cars and 20.7 mpg for light trucks. The most recent increase in the CAFE standard for cars was in 1990, and the most recent increase in the CAFE standard for light trucks was in 1996.

Information Center

2005-02-01T23:59:59.000Z

265

Helium process cycle  

DOE Patents (OSTI)

A unique process cycle and apparatus design separates the consumer (cryogenic) load return flow from most of the recycle return flow of a refrigerator and/or liquefier process cycle. The refrigerator and/or liquefier process recycle return flow is recompressed by a multi-stage compressor set and the consumer load return flow is recompressed by an independent consumer load compressor set that maintains a desirable constant suction pressure using a consumer load bypass control valve and the consumer load return pressure control valve that controls the consumer load compressor's suction pressure. The discharge pressure of this consumer load compressor is thereby allowed to float at the intermediate pressure in between the first and second stage recycle compressor sets. Utilizing the unique gas management valve regulation, the unique process cycle and apparatus design in which the consumer load return flow is separate from the recycle return flow, the pressure ratios of each recycle compressor stage and all main pressures associated with the recycle return flow are allowed to vary naturally, thus providing a naturally regulated and balanced floating pressure process cycle that maintains optimal efficiency at design and off-design process cycle capacity and conditions automatically.

Ganni, Venkatarao (Yorktown, VA)

2007-10-09T23:59:59.000Z

266

Helium process cycle  

SciTech Connect

A unique process cycle and apparatus design separates the consumer (cryogenic) load return flow from most of the recycle return flow of a refrigerator and/or liquefier process cycle. The refrigerator and/or liquefier process recycle return flow is recompressed by a multi-stage compressor set and the consumer load return flow is recompressed by an independent consumer load compressor set that maintains a desirable constant suction pressure using a consumer load bypass control valve and the consumer load return pressure control valve that controls the consumer load compressor's suction pressure. The discharge pressure of this consumer load compressor is thereby allowed to float at the intermediate pressure in between the first and second stage recycle compressor sets. Utilizing the unique gas management valve regulation, the unique process cycle and apparatus design in which the consumer load return flow is separate from the recycle return flow, the pressure ratios of each recycle compressor stage and all main pressures associated with the recycle return flow are allowed to vary naturally, thus providing a naturally regulated and balanced floating pressure process cycle that maintains optimal efficiency at design and off-design process cycle capacity and conditions automatically.

Ganni, Venkatarao (Yorktown, VA)

2007-10-09T23:59:59.000Z

267

Helium process cycle  

DOE Patents (OSTI)

A unique process cycle and apparatus design separates the consumer (cryogenic) load return flow from most of the recycle return flow of a refrigerator and/or liquefier process cycle. The refrigerator and/or liquefier process recycle return flow is recompressed by a multi-stage compressor set and the consumer load return flow is recompressed by an independent consumer load compressor set that maintains a desirable constant suction pressure using a consumer load bypass control valve and the consumer load return pressure control valve that controls the consumer load compressor's suction pressure. The discharge pressure of this consumer load compressor is thereby allowed to float at the intermediate pressure in between the first and second stage recycle compressor sets. Utilizing the unique gas management valve regulation, the unique process cycle and apparatus design in which the consumer load return flow is separate from the recycle return flow, the pressure ratios of each recycle compressor stage and all main pressures associated with the recycle return flow are allowed to vary naturally, thus providing a naturally regulated and balanced floating pressure process cycle that maintains optimal efficiency at design and off-design process cycle capacity and conditions automatically.

Ganni, Venkatarao (Yorktown, VA)

2008-08-12T23:59:59.000Z

268

The evaporative gas turbine (EGT) cycle  

SciTech Connect

Humidification of the flow through a gas turbine has been proposed in a variety of forms. The STIG plant involves the generation of steam by the gas turbine exhaust in a heat recovery steam generator (HRSG), and its injection into or downstream of the combustion chamber. This increases the mass flow through the turbine and the power output from the plant, with a small increase in efficiency. In the evaporative gas turbine (or EGT) cycle, water is injected in the compressor discharge in a regenerative gas turbine cycle (a so-called CBTX plant--compressor [C], burner [B], turbine [T], heat exchanger [X]); the air is evaporatively cooled before it enters the heat exchanger. While the addition of water increases the turbine mass flow and power output, there is also apparent benefit in reducing the temperature drop in the exhaust stack. In one variation of the basic EGT cycle, water is also added downstream of the evaporative aftercooler, even continuously in the heat exchanger. There are several other variations on the basic cycle (e.g., the cascaded humidified advanced turbine [CHAT]). The present paper analyzes the performance of the EGT cycle. The basic thermodynamics are first discussed, and related to the cycle analysis of a dry regenerative gas turbine plant. Subsequently some detailed calculations of EGT cycles are presented. The main purpose of the work is to seek the optimum pressure ratio in the EGT cycle for given constraints (e.g., fixed maximum to minimum temperature). It is argued that this optimum has a relatively low value.

Horlock, J.H. [Whittle Lab., Cambridge (United Kingdom)

1998-04-01T23:59:59.000Z

269

Power Plant Cycling Costs  

NLE Websites -- All DOE Office Websites (Extended Search)

Power Plant Cycling Costs Power Plant Cycling Costs April 2012 N. Kumar, P. Besuner, S. Lefton, D. Agan, and D. Hilleman Intertek APTECH Sunnyvale, California NREL Technical Monitor: Debra Lew Subcontract Report NREL/SR-5500-55433 July 2012 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. National Renewable Energy Laboratory 15013 Denver West Parkway Golden, Colorado 80401 303-275-3000 * www.nrel.gov Contract No. DE-AC36-08GO28308 Power Plant Cycling Costs April 2012 N. Kumar, P. Besuner, S. Lefton, D. Agan, and D. Hilleman Intertek APTECH Sunnyvale, California NREL Technical Monitor: Debra Lew Prepared under Subcontract No. NFT-1-11325-01

270

Superfluid thermodynamic cycle refrigerator  

DOE Patents (OSTI)

This invention is comprised of a cryogenic refrigerator which cools a heat source by cyclically concentrating and diluting the amount of [sup 3]He in a single phase [sup 3]He/[sup 4]He solution. The [sup 3]He in superfluid [sup 4]He acts in a manner of an ideal gas in a vacuum. Thus, refrigeration is obtained using any conventional thermal cycle, but preferably a Stirling or Carnot cycle. A single phase solution of liquid [sup 3]He at an initial concentration in superfluid [sup 4]He is contained in a first variable volume connected to a second variable volume through a superleak device that enables free passage of [sup 4]He while restricting passage of [sup 3]He. The [sup 3]He is compressed (concentrated) and expanded (diluted) in a phased manner to carry out the selected thermal cycle to remove heat from the heat load for cooling below 1 K.

Swift, G.W.; Kotsubo, V.Y.

1991-04-02T23:59:59.000Z

271

Superfluid thermodynamic cycle refrigerator  

DOE Patents (OSTI)

A cryogenic refrigerator cools a heat source by cyclically concentrating and diluting the amount of [sup 3]He in a single phase [sup 3]He-[sup 4]He solution. The [sup 3]He in superfluid [sup 4]He acts in a manner of an ideal gas in a vacuum. Thus, refrigeration is obtained using any conventional thermal cycle, but preferably a Stirling or Carnot cycle. A single phase solution of liquid [sup 3]He at an initial concentration in superfluid [sup 4]He is contained in a first variable volume connected to a second variable volume through a superleak device that enables free passage of [sup 4]He while restricting passage of [sup 3]He. The [sup 3]He is compressed (concentrated) and expanded (diluted) in a phased manner to carry out the selected thermal cycle to remove heat from the heat load for cooling below 1 K. 12 figs.

Swift, G.W.; Kotsubo, V.Y.

1992-12-22T23:59:59.000Z

272

Superfluid thermodynamic cycle refrigerator  

DOE Patents (OSTI)

This invention is comprised of a cryogenic refrigerator which cools a heat source by cyclically concentrating and diluting the amount of {sup 3}He in a single phase {sup 3}He/{sup 4}He solution. The {sup 3}He in superfluid {sup 4}He acts in a manner of an ideal gas in a vacuum. Thus, refrigeration is obtained using any conventional thermal cycle, but preferably a Stirling or Carnot cycle. A single phase solution of liquid {sup 3}He at an initial concentration in superfluid {sup 4}He is contained in a first variable volume connected to a second variable volume through a superleak device that enables free passage of {sup 4}He while restricting passage of {sup 3}He. The {sup 3}He is compressed (concentrated) and expanded (diluted) in a phased manner to carry out the selected thermal cycle to remove heat from the heat load for cooling below 1 K.

Swift, G.W.; Kotsubo, V.Y.

1991-04-02T23:59:59.000Z

273

Superfluid thermodynamic cycle refrigerator  

DOE Patents (OSTI)

A cryogenic refrigerator cools a heat source by cyclically concentrating and diluting the amount of .sup.3 He in a single phase .sup.3 He-.sup.4 He solution. The .sup.3 He in superfluid .sup.4 He acts in a manner of an ideal gas in a vacuum. Thus, refrigeration is obtained using any conventional thermal cycle, but preferably a Stirling or Carnot cycle. A single phase solution of liquid .sup.3 He at an initial concentration in superfluid .sup.4 He is contained in a first variable volume connected to a second variable volume through a superleak device that enables free passage of .sup.4 He while restricting passage of .sup.3 He. The .sup.3 He is compressed (concentrated) and expanded (diluted) in a phased manner to carry out the selected thermal cycle to remove heat from the heat load for cooling below 1 K.

Swift, Gregory W. (Santa Fe, NM); Kotsubo, Vincent Y. (La Canada, CA)

1992-01-01T23:59:59.000Z

274

Regional business cycles in Italy  

Science Conference Proceedings (OSTI)

There is clear evidence for differences in the structure of the Italian regional business cycle in the period 1951-2004: the relationship with the national business cycle is closer in the North than in the South. The interaction between regional cycles ... Keywords: Regional business cycles, Spectral analysis, Stylized facts

Camilla Mastromarco; Ulrich Woitek

2007-10-01T23:59:59.000Z

275

NOx Adsorbers for Heavy Duty Truck Engines-Testing and Simulation  

DOE Green Energy (OSTI)

This feasibility study of NOx adsorbers in heavy-duty diesel engines examined three configurations (dual-leg, single-leg and single-leg-bypass) in an integrated experimental setup, composed of a Detroit Diesel Class-8 truck engine, a catalyzed diesel particulate filter and the NOx absorber system. The setup also employed a reductant injection concept, sensors and advanced control strategies.

Hakim, N; Hoelzer, J.; Liu, Y.

2002-08-25T23:59:59.000Z

276

Figure 73. Sales of light-duty vehicles using non-gasoline ...  

U.S. Energy Information Administration (EIA)

Sales of light-duty vehicles using non-gasoline technologies by type, 2011, 2025, ... Hybrid electric Flex-fuel Micro Total 2011.00 0.06 5.38E-03 0.54 0.25 1.61 0.01 2.49

277

Technical System Targets: Onboard Hydrogen Storage for Light-Duty Fuel Cell Vehicles  

E-Print Network (OSTI)

is to be determined. e Onboard efficiency is the energy efficiency for delivering hydrogen from the storage systemTechnical System Targets: Onboard Hydrogen Storage for Light-Duty Fuel Cell Vehicles a Storage to the powerplant divided by the total mass/volume of the complete storage system, including all stored hydrogen

278

Light-Duty Vehicle Energy Consumption by Fuel Type from EIA AEO...  

Open Energy Info (EERE)

Light-Duty Vehicle Energy Consumption by Fuel Type from EIA AEO 2011 Early Release Supplemental Table 47 of EIA AEO 2011 Early Release
2011-02-23T16:04:28Z 2011-03-31T19:33:44Z...

279

Electric Energy and Power Consumption by Light-Duty Plug-in Electric Vehicles  

E-Print Network (OSTI)

.S. roads alone by 2015. PEVs-- either plug-in hybrid electric vehicles (PHEVs) or pure electric vehicles (EVs)--adopt similar drivetrain configurations as hybrid electric vehicles (HEVs) [21 Electric Energy and Power Consumption by Light-Duty Plug-in Electric Vehicles Di Wu, Student

Tesfatsion, Leigh

280

Detroit Diesel Engine Technology for Light Duty Truck Applications - DELTA Engine Update  

DOE Green Energy (OSTI)

The early generation of the DELTA engine has been thoroughly tested and characterized in the virtual lab, during engine dynamometer testing, and on light duty trucks for personal transportation. This paper provides an up-to-date account of program findings. Further, the next generation engine design and future program plans will be briefly presented.

Freese, Charlie

2000-08-20T23:59:59.000Z

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

ARM - Field Campaign - Aerosol Life Cycle IOP at BNL  

NLE Websites -- All DOE Office Websites (Extended Search)

govCampaignsAerosol Life Cycle IOP at BNL govCampaignsAerosol Life Cycle IOP at BNL Campaign Links Images Wiki 2011 ASR STM Presentation: Sedlacek 2011 ASR STM Presentation: Springston 2010 ASR Fall Meeting: Sedlacek News, June 14, 2011: Next-generation Aerosol-sampling Stations to Head for India Related Campaigns Aerosol Life Cycle: Chemical Ionization Mass Spectrometer - CIMS 2011.07.10, Lee, OSC Aerosol Life Cycle: HR-ToF-AMS 2011.06.15, Zhang, OSC Aerosol Life Cycle: ARM Mobile Facility 2 Aerosol Observing System 2011.06.15, Sedlacek, OSC Aerosol Life Cycle: UV-APS and Nano-SMPS 2011.06.10, Hallar, OSC Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Aerosol Life Cycle IOP at BNL 2011.06.01 - 2011.08.31 Lead Scientist : Arthur Sedlacek For data sets, see below.

282

Laplace transform analysis of the carbon cycle  

Science Conference Proceedings (OSTI)

A Laplace transform representation is used to describe the changes in atmospheric CO"2 in response to emissions. The formalism gives an explicit representation of generic relations that are less clear when model results are presented as numerical integrations ... Keywords: Carbon cycle, Geosequestration, Laplace transforms, Response functions

I. G. Enting

2007-10-01T23:59:59.000Z

283

Better Sensors and Controls for Cycling and Turndown  

Science Conference Proceedings (OSTI)

Changes in the electrical generation mix (increase in renewable energy supply), relative costs of fossil fuels, and evolution of the system demand have resulted in greater reliance on cycling and turndown operation in fossil power plants. Coal and combined-cycle generating units are experiencing a combination of broader operating conditions and aging sensing and control equipment, which results in operating limitations during cycling and turndown. This report summarizes sensing and control ...

2013-11-21T23:59:59.000Z

284

BNL | Carbon Cycle Science  

NLE Websites -- All DOE Office Websites (Extended Search)

The Carbon Cycle Science & Technology Group aims to increase understanding The Carbon Cycle Science & Technology Group aims to increase understanding of the impacts of global change on managed and unmanaged ecosystems and improve knowledge of possible global change mitigation approaches. The group has three main focus areas. FACE Climate Change Experimental Facility Design and Management The CCS&T group is an internationally recognized leader in the development of Free Air CO2 Enrichment (FACE) research facilities. We are interested in the design and management of manipulative experiments that examine the effects of carbon dioxide, ozone, other atmospheric pollutants, temperature and precipitation on natural and managed ecosystems. FACE Plant Physiology and High Throughput Biochemical Phenotyping At FACE facilities we have studied the mechanisms that underlie the

285

Technology development life cycle processes.  

SciTech Connect

This report and set of appendices are a collection of memoranda originally drafted in 2009 for the purpose of providing motivation and the necessary background material to support the definition and integration of engineering and management processes related to technology development. At the time there was interest and support to move from Capability Maturity Model Integration (CMMI) Level One (ad hoc processes) to Level Three. As presented herein, the material begins with a survey of open literature perspectives on technology development life cycles, including published data on %E2%80%9Cwhat went wrong.%E2%80%9D The main thrust of the material presents a rational expose%CC%81 of a structured technology development life cycle that uses the scientific method as a framework, with further rigor added from adapting relevant portions of the systems engineering process. The material concludes with a discussion on the use of multiple measures to assess technology maturity, including consideration of the viewpoint of potential users.

Beck, David Franklin

2013-05-01T23:59:59.000Z

286

Stirling cycle engine  

DOE Patents (OSTI)

In a Stirling cycle engine having a plurality of working gas charges separated by pistons reciprocating in cylinders, the total gas content is minimized and the mean pressure equalization among the serial cylinders is improved by using two piston rings axially spaced at least as much as the piston stroke and by providing a duct in the cylinder wall opening in the space between the two piston rings and leading to a source of minimum or maximum working gas pressure.

Lundholm, Gunnar (Lund, SE)

1983-01-01T23:59:59.000Z

287

The Energy Strategy Cycle  

E-Print Network (OSTI)

Effective long-range energy planning begins with a reflective analysis that encompasses the complexity of today's energy reality and sets a course for activity to achieve long-range continuing advancement. This strategy approach involves an interrelated 'cycle' that once started and controlled in the proper direction is almost self-building in improvement. Energy conservation is the driving force to create additive progress involving system flexibility, process integration, and less energy dependence.

Korich, R. D.

1983-01-01T23:59:59.000Z

288

USCEA fuel cycle '93  

SciTech Connect

The US Council for Energy Awareness sponsored the Fuel Cycle '93 conference in Dallas, Texas, on March 21-24, 1993. Over 250 participants attended, numerous papers were presented, and several panel discussions were held. The focus of most industry participants remains the formation of USEC and the pending US-Russian HEU agreement. Following are brief summaries of two key papers and the Fuel Market Issues panel discussion.

Not Available

1993-04-01T23:59:59.000Z

289

Fuel comsumption of heavy-duty trucks : potential effect of future technologies for improving energy efficiency and emission.  

Science Conference Proceedings (OSTI)

The results of an analysis of heavy-duty truck (Classes 2b through 8) technologies conducted to support the Energy Information Administration's long-term projections for energy use are summarized. Several technology options that have the potential to improve the fuel economy and emissions characteristics of heavy-duty trucks are included in the analysis. The technologies are grouped as those that enhance fuel economy and those that improve emissions. Each technology's potential impact on the fuel economy of heavy-duty trucks is estimated. A rough cost projection is also presented. The extent of technology penetration is estimated on the basis of truck data analyses and technical judgment.

Saricks, C. L.; Vyas, A. D.; Stodolsky, F.; Maples, J. D.; Energy Systems; USDOE

2003-01-01T23:59:59.000Z

290

Hydrocarbon and Electrical Requirements in the Plasma During Treatment of NOx in Light-Duty Diesel Engine Exhaust  

DOE Green Energy (OSTI)

This paper examines the hydrocarbon (C{sub 1}/NO{sub x} ratio) and electrical energy density (ratio of power to exhaust flow rate) requirements in the plasma during plasma-assisted catalytic reduction of NO{sub x}. The requirements for treatment of NO{sub x} in heavy-duty and light-duty diesel engines are compared. It is shown that, for light-duty applications, the plasma can significantly enhance the catalytic reduction of NO{sub x} with little fuel penalty incurred in the plasma process.

Penetrante, B.; Brusasco,R.M.; Merritt, B.T.; Vogtlin, G.E.

1999-10-28T23:59:59.000Z

291

DOE hands over uranium enrichment duties to government corporation  

SciTech Connect

In an effort to renew the United States' competitiveness in the world market for uranium enrichment services, the Department of Energy (DOE) is turning over control of its Paducah, KY, and Portsmouth, OH, enrichment facilities to a for-profit organization, the United States Enrichment Corp. (USEC), which was created by last year's Energy Policy Act. William H. Timbers, Jr., a former investment banker who was appointed acting CEO in March, said the Act's mandate will mean more competitive prices for enriched reactor fuel and greater responsiveness to utility customers. As a government corporation, USEC, with current annual revenues estimated at $1.5 billion, will no longer be part of the federal budget appropriations process, but will use business management techniques, set market-based prices for enriched uranium, and pay annual dividends to the US Treasury-its sole stockholder-from earnings. The goal is to finish privatizing the corporation within two years, and to sell its stock to investors for an estimated $1 to $3 billion. USEC's success will depend in part on developing short- and long-term marketing plants to help stanch the flow of enriched-uranium customers to foreign suppliers. (DOE already has received notice from a number of US utilities that they want to be let out of their long-term enrichment contracts as they expire over the next several years).USEC's plans likely will include exploring new joint ventures with other businesses in the nuclear fuel cycle-such as suppliers, fabricators, and converters-and offering a broader range of enrichment services than DOE provided. The corporation will have to be responsive to utilities on an individual basis.

Simpson, J.

1993-07-15T23:59:59.000Z

292

Changes in release cycles for EIA's  

Gasoline and Diesel Fuel Update (EIA)

Potential efficiency improvements and their impacts on end-use energy demand Increasing light-duty vehicle greenhouse gas and fuel economy standards for model years 2017 to 2025 Energy intensity trends in AEO2010 Potential efficiency improvements and their impacts on end-use energy demand Increasing light-duty vehicle greenhouse gas and fuel economy standards for model years 2017 to 2025 Energy intensity trends in AEO2010 Energy impacts of proposed CAFE standards for light-duty vehicles, model years 2017 to 2025 Fuel consumption and greenhouse gas emissions standards for heavy-duty vehicles Natural gas as a fuel for heavy trucks: issues and incentives Nuclear power in AEO2012 Carbon capture and storage: economics and issues Potential impact of minimum pipeline throughput constraints on Alaska North Slope oil production Power sector environmental regulations on the horizon U.S. crude oil and natural gas resource uncertainty Evolving Marcellus Shale gas resource estimates

293

Dynamic Mercury Cycling Model Upgrade  

Science Conference Proceedings (OSTI)

This technical update describes the status of activities to upgrade the Dynamic Mercury Cycling Model (D-MCM), an EPRI simulation model that predicts mercury cycling and bioaccumulation in lakes.

2008-12-17T23:59:59.000Z

294

MHD Integrated Topping Cycle Project  

DOE Green Energy (OSTI)

This seventeenth quarterly technical progress report of the MHD Integrated Topping Cycle Project presents the accomplishments during the period August 1, 1991 to October 31, 1991. Manufacturing of the prototypical combustor pressure shell has been completed including leak, proof, and assembly fit checking. Manufacturing of forty-five cooling panels was also completed including leak, proof, and flow testing. All precombustor internal components (combustion can baffle and swirl box) were received and checked, and integration of the components was initiated. A decision was made regarding the primary and backup designs for the 1A4 channel. The assembly of the channel related prototypical hardware continued. The cathode wall electrical wiring is now complete. The mechanical design of the diffuser has been completed.

Not Available

1992-07-01T23:59:59.000Z

295

Demonstration of oxygen-enriched combustion system on a light-duty vehicle to reduce cold-start emissions  

DOE Green Energy (OSTI)

The oxygen content in the ambient air drawn by combustion engines can be increased by polymer membranes. The authors have previously demonstrated that 23 to 25% (concentration by volume) oxygen-enriched intake air can reduce hydrocarbons (HC), carbon monoxide (CO), air toxics, and ozone-forming potential (OFP) from flexible-fueled vehicles (FFVs) that use gasoline or M85. When oxygen-enriched air was used only during the initial start-up and warm-up periods, the emission levels of all three regulated pollutants [CO, nonmethane hydrocarbons (NMHC), and NO{sub x}] were lower than the U.S. EPA Tier II (year 2004) standards (without adjusting for catalyst deterioration factors). In the present work, an air separation membrane module was installed on the intake of a 2.5-L FFV and tested at idle and free acceleration to demonstrate the oxygen-enrichment concept for initial start-up and warm-up periods. A bench-scale, test set-up was developed to evaluate the air separation membrane characteristics for engine applications. On the basis of prototype bench tests and from vehicle tests, the additional power requirements and module size for operation of the membrane during the initial period of the cold-phase, FTP-75 cycle were evaluated. A prototype membrane module (27 in. long, 3 in. in diameter) supplying about 23% oxygen-enriched air in the engine intake only during the initial start-up and warm-up periods of a 2.5-L FFV requires additional power (blower) of less than one horsepower. With advances in air separation membranes to develop compact modules, oxygen enrichment of combustion air has the potential of becoming a more practical technique for controlling exhaust emissions from light-duty vehicles.

Sekar, R.; Poola, R.B.

1997-08-01T23:59:59.000Z

296

FUEL CYCLE COSTS IN A GRAPHITE MODERATED SLIGHTLY ENRICHED FUSED SALT REACTOR  

SciTech Connect

A fuel cycle economic study has been made for a 315Mwe graphite- moderated slightly enriched fused-salt reactor. Fuel cycle costs of less than 1.5 mills may be possible for such reactors operating on a ten-year cycle even when the fuel is discarded at the end of the cycle. Recovery of the uranium and plutonium at the end of the cycle reduces the fuel cycle costs to approximates 1 mill/kwh. Changes in the waste storage cost, reprocessing cost or salt inventory have a relatively minor effect on fuel cycle costs. (auth)

Guthrie, C.E.

1959-01-01T23:59:59.000Z

297

Finding cycles and trees in sublinear time.  

SciTech Connect

We present sublinear-time (randomized) algorithms for finding simple cycles of length at least k {ge} 3 and tree-minors in bounded-degree graphs. The complexity of these algorithms is related to the distance of the graph from being C{sub k}-minor-free (resp., free from having the corresponding tree-minor). In particular, if the graph is far (i.e., {Omega}(1)-far) from being cycle-free, i.e. if one has to delete a constant fraction of edges to make it cycle-free, then the algorithm finds a cycle of polylogarithmic length in time {tilde O}({radical}N), where N denotes the number of vertices. This time complexity is optimal up to polylogarithmic factors. The foregoing results are the outcome of our study of the complexity of one-sided error property testing algorithms in the bounded-degree graphs model. For example, we show that cycle-freeness of N-vertex graphs can be tested with one-sided error within time complexity {tilde O}(poly(1/{epsilon}) {center_dot} {radical}N). This matches the known {Omega}({radical}N) query lower bound, and contrasts with the fact that any minor-free property admits a two-sided error tester of query complexity that only depends on the proximity parameter {epsilon}. For any constant k {ge} 3, we extend this result to testing whether the input graph has a simple cycle of length at least k. On the other hand, for any fixed tree T, we show that T -minor-freeness has a one-sided error tester of query complexity that only depends on the proximity parameter {epsilon}. Our algorithm for finding cycles in bounded-degree graphs extends to general graphs, where distances are measured with respect to the actual number of edges. Such an extension is not possible with respect to finding tree-minors in o({radical}N) complexity.

Czumaj, Artur; Goldreich, Oded; Seshadhri, Comandur; Sohler, Christian; Shapira, Asaf; Ron, Dana

2010-10-01T23:59:59.000Z

298

Heavy-duty diesel vehicle Nox? aftertreatment in 2010 : the infrastructure and compliance challenges of urea-SCR  

E-Print Network (OSTI)

Increasingly stringent heavy-duty vehicle emission regulations are prompting the use of PM and NOx aftertreatment systems in the US, the EU and Japan. In the US, the EPA Highway Diesel Rule, which will be fully implemented ...

Bodek, Kristian M

2008-01-01T23:59:59.000Z

299

Assessing deployment strategies for ethanol and flex fuel vehicles in the U.S. light-duty vehicle fleet  

E-Print Network (OSTI)

Within the next 3-7 years the US light duty fleet and fuel supply will encounter what is commonly referred to as the "blend wall". This phenomenon describes the situation when more ethanol production has been mandated than ...

McAulay, Jeffrey L. (Jeffrey Lewis)

2009-01-01T23:59:59.000Z

300

Evaluating the impact of advanced vehicle and fuel technologies in U.S. light duty vehicle fleet  

E-Print Network (OSTI)

The unrelenting increase in oil use by the U.S. light-duty vehicle (LDV) fleet presents an extremely challenging energy and environmental problem. A variety of propulsion technologies and fuels have the promise to reduce ...

Bandivadekar, Anup P

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Transportation Energy Futures Series: Potential for Energy Efficiency Improvement Beyond the Light-Duty-Vehilce Sector  

NLE Websites -- All DOE Office Websites (Extended Search)

COMMERCIAL TRUCKS COMMERCIAL TRUCKS AVIATION MARINE MODES RAILROADS PIPELINES OFF-ROAD EQUIPMENT Potential for Energy Efficiency Improvement Beyond the Light-Duty-Vehicle Sector TRANSPORTATION ENERGY FUTURES SERIES: Potential for Energy Efficiency Improvement Beyond the Light-Duty-Vehicle Sector A Study Sponsored by U.S. Department of Energy Office of Energy Efficiency and Renewable Energy February 2013 Prepared by ARGONNE NATIONAL LABORATORY Argonne, IL 60439 managed by U Chicago Argonne, LLC for the U.S. DEPARTMENT OF ENERGY under contract DE-AC02-06CH11357 This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or

302

High temperature solid lubricant materials for heavy duty and advanced heat engines  

DOE Green Energy (OSTI)

Advanced engine designs incorporate higher mechanical and thermal loading to achieve efficiency improvements. This approach often leads to higher operating temperatures of critical sliding elements (e.g. piston ring/cylinder wall contacts and valve guides) which compromise the use of conventional and even advanced synthetic liquid lubricants. For these applications solid lubricants must be considered. Several novel solid lubricant composites and coatings designated PS/PM200 have been employed to dry and marginally oil lubricated contacts in advanced heat engines. These applications include cylinder kits of heavy duty diesels, and high temperature sterling engines, sidewall seals of rotary engines and various exhaust valve and exhaust component applications. The following paper describes the tribological and thermophysical properties of these tribomaterials and reviews the results of applying them to engine applications. Other potential tribological materials and applications are also discussed with particular emphasis to heavy duty and advanced heat engines.

DellaCorte, C.; Wood, J.C.

1994-10-01T23:59:59.000Z

303

Fast power cycle for fusion reactors  

SciTech Connect

The unique, deep penetration capability of 14 MeV neutrons produced in DT fusion reactions allows the generation of very high temperature working fluid temperatures in a thermal power cycle. In the FAST (Fusion Augmented Steam Turbine) power cycle steam is directly superheated by the high temperature ceramic refractory interior of the blanket, after being generated by heat extracted from the relatively cool blanket structure. The steam is then passed to a high temperature gas turbine for power generation. Cycle studies have been carried out for a range of turbine inlet temperatures (1600/sup 0/F to 3000/sup 0/F (870 to 1650/sup 0/C)), number of reheats, turbine mechanical efficiency, recuperator effectiveness, and system pressure losses. Gross cycle efficiency is projected to be in the range of 55 to 60%, (fusion energy to electric power), depending on parameters selected. Turbine inlet temperatures above 2000/sup 0/F, while they do increase efficiency somewhat, are not necessarily for high cycle efficiency.

Powell, J.; Fillo, J.; Makowitz, H.

1978-01-01T23:59:59.000Z

304

Remote Sensing of In-Use Heavy-Duty Diesel Trucks  

E-Print Network (OSTI)

Remote Sensing of In-Use Heavy-Duty Diesel Trucks D A N I E L A . B U R G A R D , G A R Y A . B I this study suggest that on-road remote sensing can detect illegal, high sulfur fuel use from individual heavy,HDDvehiclesemissionshavereceivedgrowing attentioninavarietyofstudiessuchaschassisdynamometers (5, 6), in a tunnel (7), and remote sensing (8-10) as well as one critical review (4

Denver, University of

305

Hennepin County`s experience with heavy-duty ethanol vehicles  

DOE Green Energy (OSTI)

From November 1993 to October 1996, Hennepin County, which includes Minneapolis, field-tested two heavy-duty snowplow/road maintenance trucks fueled by ethanol. The overall objective of this program was to collect data from original equipment manufacturer alternative fuel heavy-duty trucks, along with comparable data from a similarly configured diesel-powered vehicle, to establish economic, emissions, performance, and durability data for the alternative fuel technology. These ethanol trucks, along with an identical third truck equipped with a diesel engine, were operated year round to maintain the Hennepin county roads. In winter, the trucks were run in 8-hour shifts plowing and hauling snow from urban and suburban roads. For the rest of the year, the three trucks were used to repair and maintain these same roads. As a result of this project, a considerable amount of data was collected on E95 fuel use, as well as maintenance, repair, emissions, and operational characteristics. Maintenance and repair costs of the E95 trucks were considerably higher primarily due to fuel filter and fuel pump issues. From an emissions standpoint, the E95 trucks emitted less particulate matter and fewer oxides of nitrogen but more carbon monoxide and hydrocarbons. Overall, the E95 trucks operated as well as the diesel, as long as the fuel filters were changed frequently. This project was a success in that E95, a domestically produced fuel from a renewable energy source, was used in a heavy-duty truck application and performed the same rigorous tasks as the diesel counterparts. The drawbacks to E95 as a heavy-duty fuel take the form of higher operational costs, higher fuel costs, shorter range, and the lack of over-the-road infrastructure.

NONE

1998-01-01T23:59:59.000Z

306

Light-Duty Alternative Fuel Vehicles: Federal Test Procedure Emissions Results  

DOE Green Energy (OSTI)

In support of the U.S. Department of Energy's development and deployment of alternative fuels for environmental and national security reasons, NREL has managed a series of light-duty vehicle emissions tests on alternative fuel vehicles (AFVs). The purpose of this report is to give a detailed evaluation of the final emissions test results on vehicles tested on methanol, ethanol, and compressed natural gas.

Kelly, K.; Eudy, L.; Coburn, T.

1999-12-13T23:59:59.000Z

307

Reduced energy consumption by massive thermoelectric waste heat recovery in light duty trucks  

Science Conference Proceedings (OSTI)

The main objective of the EC funded HEATRECAR project is to reduce the energy consumption and curb CO2 emissions of vehicles by massively harvesting electrical energy from the exhaust system and re-use this energy to supply electrical components within the vehicle or to feed the power train of hybrid electrical vehicles. HEATRECAR is targeting light duty trucks and focuses on the development and the optimization of a Thermo Electric Generator (TEG) including heat exchanger

D. Magnetto; G. Vidiella

2012-01-01T23:59:59.000Z

308

California Greenhouse Gas Emissions Standards for Light-Duty Vehicles (released in AEO2005)  

Reports and Publications (EIA)

In July 2002, California Assembly Bill 1493 (A.B. 1493) was signed into law. The law requires that the California Air Resources Board (CARB) develop and adopt, by January 1, 2005, greenhouse gas emission standards for light-duty vehicles that provide the maximum feasible reduction in emissions. In estimating the feasibility of the standard, CARB is required to consider cost-effectiveness, technological capability, economic impacts, and flexibility for manufacturers in meeting the standard.

Information Center

2005-02-01T23:59:59.000Z

309

Optimum cycle parameters of coal fired closed cycle gas turbine in regenerative and combined cycle configurations  

Science Conference Proceedings (OSTI)

This paper presents the methodology developed for the estimation of thermodynamic performance and reports the optimum cycle parameters of coal fired CCGT in regenerative and combined cycle configurations using air, helium and carbon dioxide as working gases. A rigorous approach has been followed for the determination of the cycle efficiency by assuming the specific heat of working gases as a continuous function of temperature for accurate estimation of cycle parameters. 14 refs.

Rao, J.S.

1982-01-01T23:59:59.000Z

310

Life-cycle assessment of wastewater treatment plants  

E-Print Network (OSTI)

This thesis presents a general model for the carbon footprints analysis of wastewater treatment plants (WWTPs), using a life cycle assessment (LCA) approach. In previous research, the issue of global warming is often related ...

Dong, Bo, M. Eng. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

311

Physics of fusion-fuel cycles  

SciTech Connect

The evaluation of nuclear fusion fuels for a magnetic fusion economy must take into account the various technological impacts of the various fusion fuel cycles as well as the relative reactivity and the required ..beta..'s and temperatures necessary for economic steady-state burns. This paper will review some of the physics of the various fusion fuel cycles (D-T, catalyzed D-D, D-/sup 3/He, D-/sup 6/Li, and the exotic fuels: /sup 3/He/sup 3/He and the proton-based fuels such as P-/sup 6/Li, P-/sup 9/Be, and P-/sup 11/B) including such items as: (1) tritium inventory, burnup, and recycle, (2) neutrons, (3) condensable fuels and ashes, (4) direct electrical recovery prospects, (5) fissile breeding, etc. The advantages as well as the disadvantages of the different fusion fuel cycles will be discussed. The optimum fuel cycle from an overall standpoint of viability and potential technological considerations appears to be catalyzed D-D, which could also support smaller relatively clean, lean-D, rich-/sup 3/He satellite reactors as well as fission reactors.

McNally, J.R. Jr.

1981-01-01T23:59:59.000Z

312

Internal cycle modeling and environmental assessment of multiple cycle consumer products  

Science Conference Proceedings (OSTI)

Highlights: Black-Right-Pointing-Pointer Dynamic flow models are presented for remanufactured, reused or recycled products. Black-Right-Pointing-Pointer Early loss and stochastic return are included for fast and slow cycling products. Black-Right-Pointing-Pointer The reuse-to-input flow ratio (Internal Cycle Factor, ICF) is determined. Black-Right-Pointing-Pointer The cycle rate, which is increasing with the ICF, monitors eco-performance. Black-Right-Pointing-Pointer Early internal cycle losses diminish the ICF, the cycle rate and performance. - Abstract: Dynamic annual flow models incorporating consumer discard and usage loss and featuring deterministic and stochastic end-of-cycle (EOC) return by the consumer are developed for reused or remanufactured products (multiple cycle products, MCPs), including fast and slow cycling, short and long-lived products. It is shown that internal flows (reuse and overall consumption) increase proportionally to the dimensionless internal cycle factor (ICF) which is related to environmental impact reduction factors. The combined reuse/recycle (or cycle) rate is shown capable for shortcut, albeit effective, monitoring of environmental performance in terms of waste production, virgin material extraction and manufacturing impacts of all MCPs, a task, which physical variables (lifetime, cycling frequency, mean or total number of return trips) and conventional rates, via which environmental policy has been officially implemented (e.g. recycling rate) cannot accomplish. The cycle rate is shown to be an increasing (hyperbolic) function of ICF. The impact of the stochastic EOC return characteristics on total reuse and consumption flows, as well as on eco-performance, is assessed: symmetric EOC return has a small, positive effect on performance compared to deterministic, while early shifted EOC return is more beneficial. In order to be efficient, environmental policy should set higher minimum reuse targets for higher trippage MCPs. The results may serve for monitoring, flow accounting and comparative eco-assessment of MCPs. They may be useful in identifying reachable and efficient reuse/recycle targets for consumer products and in planning return via appropriate labelling and digital coding for enhancing environmental performance, while satisfying consumer demand.

Tsiliyannis, C.A., E-mail: anion@otenet.gr [ANION Environmental Ltd., 26 Lykoudi Str., Athens 11141 (Greece)

2012-01-15T23:59:59.000Z

313

The Kalina cycle and similar cycles for geothermal power production  

SciTech Connect

This report contains a brief discussion of the mechanics of the Kalina cycle and ideas to extend the concept to other somewhat different cycles. A modified cycle which has a potential heat rejection advantage but little or no performance improvement is discussed. Then, the results of the application of the Kalina cycle and the modified cycle to a geothermal application (360/degree/F resource) are discussed. The results are compared with published results for the Kalina cycle with high temperature sources and estimates about performance at the geothermal temperatures. Finally, the conclusions of this scoping work are given along with recommendations of the direction of future work in this area. 11 refs., 4 figs., 1 tab.

Bliem, C.J.

1988-09-01T23:59:59.000Z

314

Split stream boilers for high-temperature/high-pressure topping steam turbine combined cycles  

SciTech Connect

Research and development work on high-temperature and high-pressure (up to 1,500 F TIT and 4,500 psia) topping steam turbines and associated steam generators for steam power plants as well as combined cycle plants is being carried forward by DOE, EPRI, and independent companies. Aeroderivative gas turbines and heavy-duty gas turbines both will require exhaust gas supplementary firing to achieve high throttle temperatures. This paper presents an analysis and examples of a split stream boiler arrangement for high-temperature and high-pressure topping steam turbine combined cycles. A portion of the gas turbine exhaust flow is run in parallel with a conventional heat recovery steam generator (HRSG). This side stream is supplementary fired opposed to the current practice of full exhaust flow firing. Chemical fuel gas recuperation can be incorporated in the side stream as an option. A significant combined cycle efficiency gain of 2 to 4 percentage points can be realized using this split stream approach. Calculations and graphs show how the DOE goal of 60 percent combined cycle efficiency burning natural gas fuel can be exceeded. The boiler concept is equally applicable to the integrated coal gas fuel combined cycle (IGCC).

Rice, I.G. [Rice (I.G.), Spring, TX (United States)

1997-04-01T23:59:59.000Z

315

GREET 1.0 -- Transportation fuel cycles model: Methodology and use  

DOE Green Energy (OSTI)

This report documents the development and use of the Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation (GREET) model. The model, developed in a spreadsheet format, estimates the full fuel-cycle emissions and energy use associated with various transportation fuels for light-duty vehicles. The model calculates fuel-cycle emissions of five criteria pollutants (volatile organic compounds, Co, NOx, SOx, and particulate matter measuring 10 microns or less) and three greenhouse gases (carbon dioxide, methane, and nitrous oxide). The model also calculates the total fuel-cycle energy consumption, fossil fuel consumption, and petroleum consumption using various transportation fuels. The GREET model includes 17 fuel cycles: petroleum to conventional gasoline, reformulated gasoline, clean diesel, liquefied petroleum gas, and electricity via residual oil; natural gas to compressed natural gas, liquefied petroleum gas, methanol, hydrogen, and electricity; coal to electricity; uranium to electricity; renewable energy (hydropower, solar energy, and wind) to electricity; corn, woody biomass, and herbaceous biomass to ethanol; and landfill gases to methanol. This report presents fuel-cycle energy use and emissions for a 2000 model-year car powered by each of the fuels that are produced from the primary energy sources considered in the study.

Wang, M.Q.

1996-06-01T23:59:59.000Z

316

WEB RESOURCE: Nuclear Physics and Related Computational ...  

Science Conference Proceedings (OSTI)

Feb 6, 2007 ... This site provides presentations from the Nuclear Physics and Related Computational Science R&D for Advanced Fuel Cycles Workshop:

317

Solar Cycle Variations of p-Mode Frequencies  

E-Print Network (OSTI)

Observations show that the solar p-mode frequencies change with the solar cycle. The horizontal-phase-velocity dependence of the relative frequency change, scaled by mode mass, provides depth information on the perturbation in the solar interior. We find that the smoothed scaled relative frequency change varies along the solar cycle for horizontal phase velocities higher than a critical value, which corresponds to a depth near the base of the convection zone. This phenomenon suggests that the physical conditions in a region near the base of the convection zone change with the solar cycle.

Dean-Yi Chou; Alexander Serebryanskiy

2004-05-10T23:59:59.000Z

318

Performance Characterization of a Medium-Duty Diesel Engine with Bio-Diesel and Petroleum Diesel Fuels  

E-Print Network (OSTI)

In the wake of global warming and fossil fuel depletion, renewed attention has been paid to shifting away from the use of petroleum based fuels. The world?s energy demand is commencing its dependency on alternative fuels. Such alternative fuels in use today consist of bio-alcohols (such as ethanol), hydrogen, biomass, and natural oil/fat derived fuels. However, in this study, the focus will be on the alternative fuel derived from natural oils and fats, namely biodiesel. The following study characterizes the performance of a medium-duty diesel engine fuelled with biodiesel and conventional diesel. The objective is accomplished by taking measurements of manifold pressure and temperature, fuel flow, air flow, and torque. The study first characterizes a John Deere 4.5 liter 4 cylinder direct injection engine with exhaust gas recirculation (EGR), common rail fuel injection, and variable turbo-charging with conventional petroleum diesel to set a reference for comparison. The study then proceeds to characterize the differences in engine performance as a result of using biodiesel relative to conventional diesel. The results show that torque decreases with the use of biodiesel by about 10%. The evaluation of engine performance parameters shows that torque is decreased because of the lower heating value of biodiesel compared to conventional diesel. The insignificant difference between the other performance parameters shows that the ECM demands the same performance of the engine regardless of the fuel being combusted by the engine.

Esquivel, Jason

2008-12-01T23:59:59.000Z

319

Direct fired power cycle  

SciTech Connect

A method for implementing a thermodynamic cycle is described comprising the steps of: expanding a gaseous working stream to transform its energy into usable form; removing from the expanded gaseous working stream a withdrawal stream; combining the withdrawal stream with a lean stream, having a higher content of a higher-boiling component than is contained in the withdrawal stream, to form a composite stream; condensing the composite stream to provide heat; separating the composite stream to form a liquid stream; forming an oncoming liquid working stream that evaporates at a temperature lower than the temperature at which the composite stream condenses; and evaporating the oncoming liquid working stream, using the heat produced by condensing the composite stream, to form the gaseous working stream.

Kalina, A.I.

1988-03-22T23:59:59.000Z

320

Nutrient Cycling Study  

DOE Green Energy (OSTI)

The particular goal of this study is to develop measurement techniques for understanding how consortia of organisms from geothermal facilities utilize sulfur and iron for metabolic activity; and in turn, what role that activity plays in initiating or promoting the development of a biofilm on plant substrates. Sulfur cycling is of interest because sulfur is produced in the resource. Iron is found in some of the steel formulations used in plant components and is also added as chemical treatment for reducing sulfide emissions from the plants. This report describes the set-up and operation of a bioreactor for evaluating the response of colonies of geothermal organisms to changes in nutrient and environmental conditions. Data from initial experiments are presented and plans for future testing is discussed.

Peter A. Pryfogle

2005-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Assessment of Fuel Economy Technologies for Light-Duty Vehicles  

SciTech Connect

An analysis of the number of stations and vehicles necessary to achieve future goals for sales of ethanol fuel (E85) is presented. Issues related to the supply of ethanol, which may turn out to be of even greater concern, are not analyzed here. A model of consumers decisions to purchase E85 versus gasoline based on prices, availability, and refueling frequency is derived, and preliminary results for 2010, 2017, and 2030 consistent with the president s 2007 biofuels program goals are presented. A limited sensitivity analysis is carried out to indicate key uncertainties in the trade-off between the number of stations and fuels. The analysis indicates that to meet a 2017 goal of 26 billion gallons of E85 sold, on the order of 30% to 80% of all stations may need to offer E85 and that 125 to 200 million flexible-fuel vehicles (FFVs) may need to be on the road, even if oil prices remain high. These conclusions are tentative for three reasons: there is considerable uncertainty about key parameter values, such as the price elasticity of choice between E85 and gasoline; the future prices of E85 and gasoline are uncertain; and the method of analysis used is highly aggregated it does not consider the potential benefits of regional strategies or the possible existence of market segments predisposed to purchase E85. Nonetheless, the preliminary results indicate that the 2017 biofuels program goals are ambitious and will require a massive effort to produce enough FFVs and ensure widespread availability of E85.

Greene, David L [ORNL

2008-01-01T23:59:59.000Z

322

A New Absorption Cycle: The Single-Effect Regenerative Absoprtion Refrigeration Cycle  

E-Print Network (OSTI)

REGENERATIVE ABSORPTION REFRIGERATION CYCLE ABSTRACT A new absorption cycle , using heat as the energy

Dao, K.

2011-01-01T23:59:59.000Z

323

Life Cycle Analysis: Power Studies Compilation Report  

NLE Websites -- All DOE Office Websites (Extended Search)

Hour LC Life Cycle LCA Life Cycle Analysis LCC Life Cycle Costing LCI Life Cycle Inventory LCOE Levelized Cost of Delivered Electricity LNB Low NO x Burner LNG Liquefied...

324

Use expander cycles for LPG recovery  

SciTech Connect

Expander-type cycles are competitive with other gas recovery processes even when applied to relatively rich gas feeds for a high recovery of only propane plus. These cycles are the most economical to use when (1) ''free pressure drop'' is available between feed and residue gas pressure; (2) product requires demethanization only; (3) feed is very lean and propane plus heavier components are required; (4) a small, unattended, prefabricated unit for LPG recovery is needed; (5) an offshore LPG facility is required to be built on a platform where space and weight allowance is at a premium; (6) a facility is initially built for propane recovery, but is planned for future conversion to ethane recovery; and (7) relatively low-pressure gas feeds (which are usually quite rich) must be processed for a high recovery of ethane. A flow chart for an oil absorption plant is presented.

Valdes, A.R.

1974-01-01T23:59:59.000Z

325

Study and program plan for improved heavy duty gas turbine engine ceramic component development  

DOE Green Energy (OSTI)

A five-year program plan was generated from the study activities with the objectives of demonstrating a fuel economy of 213 mg/W . h (0.35 lb/hp-hr) brake specific fuel consumption by 1981 through use of ceramic materials, with conformance to current and projected Federal noise and emission standards, and to demonstrate a commercially viable engine. Study results show that increased turbine inlet and regenerator inlet temperatures, through the use of ceramic materials, contribute the greatest amount to achieving fuel economy goals. Further, improved component efficiencies (for the compressor, gasifier turbine, power turbine, and regenerator disks show significant additional gains in fuel economy. Fuel saved in a 500,000-mile engine life, risk levels involved in development, and engine-related life cycle costs for fleets (100 units) of trucks and buses were used as criteria to select work goals for the planned program.

Helms, H.E.

1977-05-01T23:59:59.000Z

326

Closed-cycle Retrofit Study  

Science Conference Proceedings (OSTI)

EPRI is investigating implications of a potential U.S. Environmental Protection Agency (EPA) Clean Water Act 316(b) rulemaking that would establish "Best Technology Available" (BTA) based on closed-cycle cooling retrofits for facilities with once-through cooling. This report focuses on estimated costs associated with closed-cycle cooling system retrofits that include: 1) capital costs, 2) energy required to operate the closed-cycle system, 3) heat rate penalty, and 4) extended downtime required to retrof...

2011-01-31T23:59:59.000Z

327

Carbon Cycle 2.0  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Carbon Cycle 2.0 Carbon Cycle 2.0 Pioneering science for sustainable energy solutions Artificial Photosynthesis Energy Storage Combustion Carbon Capture & Storage Developing World Efficiency Photovoltaics Biofuels Energy Analysis Climate Modeling Carbon Cycle 2.0 is... 1. A vision for * a global energy system integrated with the Earth's natural carbon cycles * an interactive Berkeley Lab environment with a shared sense of purpose 2. A program development plan that will allow us to deepen our capabilities and provide more opportunities to have impact 3. An attempt to integrate our basic research with applications using models of technology deployment constraints 4. Set of internal activities aimed at priming the effort

328

Optimization of Air Conditioning Cycling.  

E-Print Network (OSTI)

??Systems based on the vapor compression cycle are the most widely used in a variety of air conditioning applications. Despite the vast growth of modern… (more)

Seshadri, Swarooph

2012-01-01T23:59:59.000Z

329

Award Cycle at a Glance  

Science Conference Proceedings (OSTI)

Award Cycle at a Glance. 2013. Eligibility Certification February 19 (with a nomination to the Board of Examiners). April 2 (without a nomination). ...

2013-07-22T23:59:59.000Z

330

Multivariable cycle-to-cycle of an injection molding process  

E-Print Network (OSTI)

Cycle-to-Cycle (CtC) feedback control has been studied extensively with increasing demands on the precision and quality of manufactured parts. Single input-Single output has been studied as the basis of CtC feedback control. ...

Vanderpuije, Curtis N

2005-01-01T23:59:59.000Z

331

MID-CYCLE CHANGES IN ETA CARINAE  

Science Conference Proceedings (OSTI)

In late 2006, ground-based photometry of {eta} Car plus the Homunculus showed an unexpected decrease in its integrated apparent brightness, an apparent reversal of its long-term brightening. Subsequent Hubble Space Telescope (HST)/WFPC2 photometry of the central star in the near-UV showed that this was not a simple reversal. This multi-wavelength photometry did not support increased extinction by dust as the explanation for the decrease in brightness. A spectrum obtained with the Gemini Multi-Object Spectrograph on the Gemini-South telescope revealed subtle changes mid-way in {eta} Car's 5.5 yr spectroscopic cycle when compared with HST/Space Telescope Imaging Spectrograph (STIS) spectra at the same phase in the cycle. At mid-cycle the secondary star is 20-30 AU from the primary. We suggest that the spectroscopic changes are consistent with fluctuations in the density and velocity of the primary star's wind, unrelated to the 5.5 yr cycle but possibly related to its latitude-dependent morphology. We also discuss subtle effects that must be taken into account when comparing ground-based and HST/STIS spectra.

Martin, John C. [Physics and Astronomy Department, University of Illinois, Springfield, IL 62703 (United States); Davidson, Kris; Humphreys, Roberta M.; Mehner, Andrea [Astronomy Department, University of Minnesota, Minneapolis, MN 55455 (United States)

2010-05-15T23:59:59.000Z

332

Tier 2 Useful Life (120,000 miles) Exhaust Emission Results for a NOx Adsorber and Diesel Particle Filter Equipped Light-Duty Diesel Vehicle  

DOE Green Energy (OSTI)

Investigates the emission control system performance and system desulfurization effects on regulated and unregulated emissions in a light-duty diesel engine.

Tatur, M.; Tomazic, D.; Thornton, M.; Orban, J.; Slone, E.

2006-05-01T23:59:59.000Z

333

An Analysis of the Relationship between Casualty Risk Per Crash and Vehicle Mass and Footprint for Model Year 2000-2007 Light-Duty Vehicles-Preliminary report  

E-Print Network (OSTI)

variables, on 13-state casualty risk per crash, lightvariables, on 13-state casualty risk per crash, lighton crashes with heavier light-duty trucks, by case vehicle

Wenzel, Tom

2013-01-01T23:59:59.000Z

334

Fuel Sulfur Effects on a Medium-Duty Diesel Pick-Up with a NOx Adsorber, Diesel Particle Filter Emissions Control System: 2000-Hour Aging Results  

DOE Green Energy (OSTI)

Discusses the emission results of a nitrogen oxide adsorber catalyst and a diesel particle filter in a medium-duty, diesel pick-up truck.

Thornton, M.; Webb, C. C.; Weber, P. A.; Orban, J.; Slone, E.

2006-05-01T23:59:59.000Z

335

Biomass Gasification Combined Cycle  

DOE Green Energy (OSTI)

Gasification combined cycle continues to represent an important defining technology area for the forest products industry. The ''Forest Products Gasification Initiative'', organized under the Industry's Agenda 2020 technology vision and supported by the DOE ''Industries of the Future'' program, is well positioned to guide these technologies to commercial success within a five-to ten-year timeframe given supportive federal budgets and public policy. Commercial success will result in significant environmental and renewable energy goals that are shared by the Industry and the Nation. The Battelle/FERCO LIVG technology, which is the technology of choice for the application reported here, remains of high interest due to characteristics that make it well suited for integration with the infrastructure of a pulp production facility. The capital cost, operating economics and long-term demonstration of this technology area key input to future economically sustainable projects and must be verified by the 200 BDT/day demonstration facility currently operating in Burlington, Vermont. The New Bern application that was the initial objective of this project is not currently economically viable and will not be implemented at this time due to several changes at and around the mill which have occurred since the inception of the project in 1995. The analysis shows that for this technology, and likely other gasification technologies as well, the first few installations will require unique circumstances, or supportive public policies, or both to attract host sites and investors.

Judith A. Kieffer

2000-07-01T23:59:59.000Z

336

The closed fuel cycle  

Science Conference Proceedings (OSTI)

Available in abstract form only. Full text of publication follows: The fast growth of the world's economy coupled with the need for optimizing use of natural resources, for energy security and for climate change mitigation make energy supply one of the 21. century most daring challenges. The high reliability and efficiency of nuclear energy, its competitiveness in an energy market undergoing a new oil shock are as many factors in favor of the 'renaissance' of this greenhouse gas free energy. Over 160,000 tHM of LWR1 and AGR2 Used Nuclear Fuel (UNF) have already been unloaded from the reactor cores corresponding to 7,000 tons discharged per year worldwide. By 2030, this amount could exceed 400,000 tHM and annual unloading 14,000 tHM/year. AREVA believes that closing the nuclear fuel cycle through the treatment and recycling of Used Nuclear Fuel sustains the worldwide nuclear power expansion. It is an economically sound and environmentally responsible choice, based on the preservation of natural resources through the recycling of used fuel. It furthermore provides a safe and secure management of wastes while significantly minimizing the burden left to future generations. (authors)

Froment, Antoine; Gillet, Philippe [AREVA NC (France)

2007-07-01T23:59:59.000Z

337

Light-Duty Diesel Vehicles: Market Issues and Potential Energy and Emissions Impacts  

Gasoline and Diesel Fuel Update (EIA)

2 2 Light-Duty Diesel Vehicles: Market Issues and Potential Energy and Emissions Impacts January 2009 Energy Information Administration Office of Integrated Analysis and Forecasting U.S. Department of Energy Washington, DC 20585 This report was prepared by the Energy Information Administration, the independent statistical and analytical agency within the Department of Energy. Unless referenced otherwise, the information contained herein should be attributed to the Energy Information Administration and should not be construed as advocating or reflecting any policy position of the Department of Energy or any other organization. Service Reports are prepared by the Energy Information Administration upon special request and are based on assumptions specified by the requester.

338

Combustion Commonality and Differences Between HSDI and Heavy Duty Truck Engines  

DOE Green Energy (OSTI)

Experimental understanding of the diesel spray and combustion process at the fundamental level has helped advance the virtual lab simulation tools. The computational fluid dynamics (CFD)-based simulation has been globally verified in many engines, providing substantial credibility to the use of this technology in advanced engine development. This paper highlights the common aspects and differences between the smallbore HSDI and the larger displacement heavy-duty truck engine spray and combustion processes. Implications for combustion system strategies will be delineated. Detroit Diesel integrated ''Wired'' approach will be explained with pointers towards future tool enhancements.

Chen, Rong

2000-08-20T23:59:59.000Z

339

Tank selection for Light Duty Utility Arm (LDUA) system hot testing in a single shell tank  

Science Conference Proceedings (OSTI)

The purpose of this report is to recommend a single shell tank in which to hot test the Light Duty Utility Arm (LDUA) for the Tank Waste Remediation System (TWRS) in Fiscal Year 1996. The LDUA is designed to utilize a 12 inch riser. During hot testing, the LDUA will deploy two end effectors (a High Resolution Stereoscopic Video Camera System and a Still/Stereo Photography System mounted on the end of the arm`s tool interface plate). In addition, three other systems (an Overview Video System, an Overview Stereo Video System, and a Topographic Mapping System) will be independently deployed and tested through 4 inch risers.

Bhatia, P.K.

1995-01-31T23:59:59.000Z

340

Evaluation of Oil Bypass Filter Technology on Heavy-Duty Vehicles  

NLE Websites -- All DOE Office Websites (Extended Search)

(Advanced Vehicle Testing Activity) (Advanced Vehicle Testing Activity) Evaluation of Oil Bypass Filter Technology on Heavy-Duty Vehicles James Francfort American Filtration and Separations Society April 2005 Presentation Outline * Background & Objectives * Oil bypass filters - features & reported benefits * INL testing method * puraDYN oil bypass filters * Refined Global Solutions (RGS) oil bypass filters * Testing results & trends * Particulate and ferrography testing * Initial INL Oil Bypass Filter Economics * Potential fleet oil savings * Testing Status Bypass Filter Evaluation - Background * Funded by the U.S. Department of Energy's FreedomCAR & Vehicle Technologies Program (Advanced Vehicle Testing Activity) * Vehicles operated by Idaho National Laboratory's Fleet Operations group * Idaho National Laboratory

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Gas Turbine Technology, Part A: Overview, Cycles, and Thermodynamic Performance  

E-Print Network (OSTI)

The growth of cogeneration technology has accelerated in recent years, and it is estimated that fifty percent of the cogeneration market will involve gas turbines. To several energy engineers, gas turbine engines present a new and somewhat perplexing prime mover. This paper (Parts A & B) intends to treat the area of gas turbine technology to provide a broad overview and understanding of this subject. This paper (Part A) covers the basics of gas turbine cycles, thermodynamics and performance considerations that are important in cogeneration. Simple, regenerative and combined cycles will be discussed, along with important performance losses (inlet and exit losses and part load operation). Waste heat recovery, as it relates to gas turbine performance, will also be discussed. This paper will provide the basic equations enabling quick computations to be made. Topics such as typical efficiencies, evaporative cooling costs, emissions, etc. will be discussed. A brief discussion of advanced cycles such as the dual fluid cycle and close cycles is also made.

Meher-Homji, C. B.; Focke, A. B.

1985-05-01T23:59:59.000Z

342

Nuclear fuel cycle information workshop  

SciTech Connect

This overview of the nuclear fuel cycle is divided into three parts. First, is a brief discussion of the basic principles of how nuclear reactors work; second, is a look at the major types of nuclear reactors being used and world-wide nuclear capacity; and third, is an overview of the nuclear fuel cycle and the present industrial capability in the US.

1983-01-01T23:59:59.000Z

343

Reprocessing in breeder fuel cycles  

Science Conference Proceedings (OSTI)

Over the past decade, the United States has developed plans and carried out programs directed toward the demonstration of breeder fuel reprocessing in connection with the first breeder demonstration reactor. A renewed commitment to moving forward with the construction of the Clinch River Breeder Reactor (CRBR) has been made, with startup anticipated near the end of this decade. While plans for the CRBR and its associated fuel cycle are still being firmed up, the basic research and development programs required to carry out the demonstrations have continued. This paper updates the status of the reprocessing plans and programs. Policies call for breeder recycle to begin in the early to mid-1990's. Contents of this paper are: (1) evolving plans for breeder reprocessing (demonstration reprocessing plant, reprocessing head-end colocated at an existing facility); (2) relationship to LWR reprocessing; (3) integrated equipment test (IET) facility and related hardware development activities (mechanical considerations in shearing and dissolving, remote operations and maintenance demonstration phase of IET, integrated process demonstration phase of IET, separate component development activities); and (4) supporting process R and D.

Burch, W.D.; Groenier, W.S.

1982-01-01T23:59:59.000Z

344

MHD Integrated Topping Cycle Project  

DOE Green Energy (OSTI)

This fourteenth quarterly technical progress report of the MHD Integrated Topping Cycle Project presents the accomplishments during the period November 1, 1990 to January 31, 1991. Testing of the High Pressure Cooling Subsystem electrical isolator was completed. The PEEK material successfully passed the high temperature, high pressure duration tests (50 hours). The Combustion Subsystem drawings were CADAM released. The procurement process is in progress. An equipment specification and RFP were prepared for the new Low Pressure Cooling System (LPCS) and released for quotation. Work has been conducted on confirmation tests leading to final gas-side designs and studies to assist in channel fabrication.The final cathode gas-side design and the proposed gas-side designs of the anode and sidewall are presented. Anode confirmation tests and related analyses of anode wear mechanisms used in the selection of the proposed anode design are presented. Sidewall confirmation tests, which were used to select the proposed gas-side design, were conducted. The design for the full scale CDIF system was completed. A test program was initiated to investigate the practicality of using Avco current controls for current consolidation in the power takeoff (PTO) regions and to determine the cause of past current consolidation failures. Another important activity was the installation of 1A4-style coupons in the 1A1 channel. A description of the coupons and their location with 1A1 channel is presented herein.

Not Available

1992-02-01T23:59:59.000Z

345

Reading Comprehension - The Water Cycle  

NLE Websites -- All DOE Office Websites (Extended Search)

The Water Cycle The Water Cycle Evaporation, Condensation and Precipitation The _________ moon sun water clouds evaporates _________ fish oceans rain water from lakes and oceans. As the air rises, it cools. The water vapor condenses into tiny droplets of _________ evaporation clouds water sunshine . The droplets crowd together and form a _________ cloud lake storm precipitation . Wind blows the _________ rain sun droplet cloud towards the land. The tiny droplets join together and fall as precipitation to the _________ river lake ground cloud . The water soaks into the ground and collects in _________ rivers and lakes oceans and clouds jars and cups plants and animals . The _________ storm cycle river house that never ends has started again! A water cycle diagram. Use the diagram to identify the different parts of the water cycle:

346

Microsoft PowerPoint - Nuclear Fuel Cycle_rev3 (1).pptx [Read...  

NLE Websites -- All DOE Office Websites (Extended Search)

nuclear fuel cycle options are possible * Argonne is involved in research and technology development related to understanding the science and technology of current and potential...

347

Simulating the Impact of Premixed Charge Compression Ignition on Light-Duty Diesel Fuel Economy and Emissions of Particulates and NOx  

SciTech Connect

We utilize the Powertrain Systems Analysis Toolkit (PSAT) combined with transient engine and aftertreatment component models implemented in Matlab/Simulink to simulate the effect of premixed charge compression ignition (PCCI) on the fuel economy and emissions of light-duty diesel-powered conventional and hybrid electric vehicles (HEVs). Our simulated engine is capable of both conventional diesel combustion (CDC) and premixed charge compression ignition (PCCI) over real transient driving cycles. Our simulated aftertreatment train consists of a diesel oxidation catalyst (DOC), lean NOx trap (LNT), and catalyzed diesel particulate filter (DPF). The results demonstrate that, in the simulated conventional vehicle, PCCI can significantly reduce fuel consumption and emissions by reducing the need for LNT and DPF regeneration. However, the opportunity for PCCI operation in the simulated HEV is limited because the engine typically experiences higher loads and multiple stop-start transients that are outside the allowable PCCI operating range. Thus developing ways of extending the PCCI operating range combined with improved control strategies for engine and emissions control management will be especially important for realizing the potential benefits of PCCI in HEVs.

Gao, Zhiming [ORNL; Daw, C Stuart [ORNL; Wagner, Robert M [ORNL; Edwards, Kevin Dean [ORNL; Smith, David E [ORNL

2013-01-01T23:59:59.000Z

348

Natural Gas as a Future Fuel for Heavy-Duty Vehicles  

DOE Green Energy (OSTI)

In addition to their significant environmental impacts, medium-duty and heavy-duty (HD) vehicles are high volume fuel users. Development of such vehicles, which include transit buses, refuse trucks, and HD Class 6-8 trucks, that are fueled with natural gas is strategic to market introduction of natural gas vehicles (NGV). Over the past five years the Department of Energy's (DOE) Office of Heavy Vehicle Technologies (OHVT) has funded technological developments in NGV systems to support the growth of this sector in the highly competitive transportation market. The goals are to minimize emissions associated with NGV use, to improve on the economies of scale, and to continue supporting the testing and safety assessments of all new systems. This paper provides an overview of the status of major projects under a program supported by DOE/OHVT and managed by Brookhaven National Laboratory. The discussion focuses on the program's technical strategy in meeting specific goals proposed by the N GV industry and the government. Relevant projects include the development of low-cost fuel storage, fueling infrastructure, and HD vehicle applications.

Wai-Lin Litzke; James Wegrzyn

2001-05-14T23:59:59.000Z

349

System Operational and Planning Impacts of Increased Generator Cycling  

Science Conference Proceedings (OSTI)

This update describes research performed in 2012 to contextualize some of the key issues related to generator cycling with high wind and photovoltaic (PV) penetrations. Using representative system data from California, cycling with increasing wind and PV generation is examined. Sensitivities on the value of various generator-specific (turndown levels, hot start operation, outage rate, etc.) and system-specific (PV/wind mix, penetration of wind, etc.) characteristics are used to identify those ...

2012-12-31T23:59:59.000Z

350

Fuel-cycle energy and emissions impacts of tripled fuel-economy vehicles  

DOE Green Energy (OSTI)

This paper presents estimates of the fill fuel-cycle energy and emissions impacts of light-duty vehicles with tripled fuel economy (3X vehicles) as currently being developed by the Partnership for a New Generation of Vehicles (PNGV). Seven engine and fuel combinations were analyzed: reformulated gasoline, methanol, and ethanol in spark-ignition, direct-injection engines; low-sulfur diesel and dimethyl ether in compression-ignition, direct-injection engines; and hydrogen and methanol in fuel-cell vehicles. Results were obtained for three scenarios: a Reference Scenario without PNGVs, a High Market Share Scenario in which PNGVs account for 60% of new light-duty vehicle sales by 2030, and a Low Market Share Scenario in which PNGVs account for half as many sales by 2030. Under the higher of these two, the fuel-efficiency gain by 3X vehicles translated directly into a nearly 50% reduction in total energy demand, petroleum demand, and carbon dioxide emissions. The combination of fuel substitution and fuel efficiency resulted in substantial reductions in emissions of nitrogen oxide (NO{sub x}), carbon monoxide (CO), volatile organic compounds (VOCs), sulfur oxide, (SO{sub x}), and particulate matter smaller than 10 microns (PM{sub 10}) for most of the engine-fuel combinations examined. The key exceptions were diesel- and ethanol-fueled vehicles for which PM{sub 10} emissions increased.

Mintz, M. M.; Vyas, A. D.; Wang, M. Q.

1997-12-18T23:59:59.000Z

351

Lessons Learned in Startup and Commissioning of Simple-Cycle and Combined-Cycle Combustion Turbine Plants  

Science Conference Proceedings (OSTI)

Over the last ten years, hundreds of combustion turbines (CT) have been installed to meet the needs of the power generation market. A variety of CT models have been installed throughout this period, in both simple-cycle and combined-cycle configurations. Some of the initial plants had issues related to meeting performance requirements and acceptable operation, and each new plant design could be improved based on the experience gained on the earlier installations and startups. This report provides a summa...

2009-01-21T23:59:59.000Z

352

Investigation on Nitric Oxide and Soot of Biodiesel and Conventional Diesel using a Medium Duty Diesel Engine  

E-Print Network (OSTI)

Biodiesel has been suggested as an alternative fuel to the petroleum diesel fuel. It beneficially reduces regulated emission gases, but increases NOx (nitric oxide and nitrogen dioxide) Thus, the increase in NOx is the barrier for potential growth of the biodiesel fuel. In general, NOx formation is dominated by flame temperature. Interestingly, soot can play a role as a heat sink as well as a heat transfer media to high temperature gases. Thus, the cooling effect of soot may change the flame temperature and therefore, NOx emissions. In this study, emphasis is placed on the relationship between soot and NO (Nitric oxide) formation. For the experimental study, a metallic fuel additive is used since barium is known to be effective to suppress soot formation during combustion. The barium additive is applied to #2D (Number 2 diesel fuel) by volume basis: 0.1, 0.25 and 0.5 %-v, and to the palm olein oil by 0.25 %-v. All the tests are carried out in a four-cylinder medium duty diesel engine, 4045 DI diesel engine, manufactured by John Deere. For the analysis, an analytical model is used to estimate combustion temperature, NO concentration and soot emissivity. The results show that NO concentration does not have the expected trade-off relation with soot. Rather, NO concentration is found to be more strongly affected by ambient temperature and combustion characteristics than by soot. The results of the analytical model show the reasonable NO estimation and the improvement on temperature calculation. However, the model is not able to explain the detailed changes of soot emissivity by the different fuels since the emissivity correlation is developed empirically for diesel fuel.

Song, Hoseok

2012-05-01T23:59:59.000Z

353

A Large Annual Cycle in Ozone above the Tropical Tropopause Linked to the Brewer–Dobson Circulation  

Science Conference Proceedings (OSTI)

Near-equatorial ozone observations from balloon and satellite measurements reveal a large annual cycle in ozone above the tropical tropopause. The relative amplitude of the annual cycle is large in a narrow vertical layer between 16 and 19 km, ...

William J. Randel; Mijeong Park; Fei Wu; Nathaniel Livesey

2007-12-01T23:59:59.000Z

354

Minimize Boiler Short Cycling Losses  

SciTech Connect

This revised ITP tip sheet on minimizing boiler short cycling losses provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

2006-01-01T23:59:59.000Z

355

Deoxygenation in Cycling Fossil Plants  

Science Conference Proceedings (OSTI)

Minimizing shutdown oxygen levels at a cycling fossil plant can reduce corrosion product transport to the boilers. In this study two forms of activated carbon were used to catalyze the oxygen/hydrazine reaction and minimize oxygen levels.

1992-05-01T23:59:59.000Z

356

Ammonium generation during SRAT cycle  

DOE Green Energy (OSTI)

During the IDMS noble-metal demonstration runs ammonium nitrate deposition was found in the vessel vent system of the feed preparation area. In the bench-scale experiments of studying the hydrogen generation during the sludge treatment cycle, ammonium ion production was also monitored. It was found that: During a simulation of the DWPF Cold Chemical Runs SRAT cycle no detectable amount of ammonium ions was generated when treating a non-noble-metal containing sludge simulant according to the nitric acid flowsheet. Ammonium ions were generated during the SRAT-SME cycle when treating the noble-metal containing sludge with either formic acid or nitric acid/late-washing PHA. This is due to the reaction between formic acid and nitrate catalyzed by the noble metals in the sludge simulant. Ammonium ion production closely followed the hydrogen evolution from the catalytic decomposition of formic acid. This report summarizes the results of the production of ammonia during the SRAT cycle.

Hsu, C.W.

1992-10-13T23:59:59.000Z

357

Reduce growth rate of light-duty vehicle travel to meet 2050 global climate goals This article has been downloaded from IOPscience. Please scroll down to see the full text article.  

E-Print Network (OSTI)

.iop.org/ERL/6/024018 Abstract Strong policies to constrain increasing global use of light-duty vehicles (cars reductions may be sought in sectors such as electricity generation and light-duty vehicle (LDV

Kammen, Daniel M.

358

Full Useful Life (120,000 miles) Exhaust Emission Performance of a NOx Adsorber and Diesel Particle Filter Equipped Passenger Car and Medium-duty Engine in Conjunction with Ultra Low Sulfur Fuel (Presentation)  

DOE Green Energy (OSTI)

Discusses the full useful life exhaust emission performance of a NOx (nitrogen oxides) adsorber and diesel particle filter equipped light-duty and medium-duty engine using ultra low sulfur diesel fuel.

Thornton, M.; Tatur, M.; Tomazic, D.; Weber, P.; Webb, C.

2005-08-25T23:59:59.000Z

359

American business cycles and innovation  

E-Print Network (OSTI)

Economists have long studied innovation and its effects on business cycles. Economist Joseph Alois Schumpeter (1883-1950) was the first economist to thoroughly discuss these ideas in his Theorie der wirtschaftlichen Entwicklung, published in 1911 (English translation: The Theory of Economic Development, 1934). This paper focuses on three issues: defining innovation, defining and identifying business cycles, and determining which innovations caused which business cycles. The first section introduces the concepts of innovation and invention. The second section discusses the business cycles and highlights general causes of business cycles. The final section details the history of the iron, steel, aluminum, and pharmaceutical industries and incorporates the available business and economic data (output, productivity, inventories, and capital investment) required to answer the central question: which innovations caused which business cycles? The iron industry, examined over the sixteenth and seventeenth centuries, reveals that its relationship to the business cycle is likely significant but was difficult to quantify because of limited data. An examination of the steel industry from the post-Civil War period to the early twentieth century follows. The steel industry had a significant effect on the business cycle and seemed to direct the business cycle during the growth in railroad mileage. Steel was a huge and indispensable industry for most of the 20[th] century so it makes a very important case to study. The aluminum industry is relevant to examine because the process for making aluminum has remained the same since the American inventor, Charles Hall, patented his method in 1889. The contribution of aluminum was significant because of the introduction of the large-scale electrical generators needed to produce aluminum. Finally, the paper focuses on the contribution of the pharmaceutical industry to the business cycle. The pharmaceutical industry is important to this study because it has already proved to be a major source of innovation and is an industry that will continue to play a significant role in the American economy. The findings reveal the contribution from this industry was most significant in the post-World War II era of research and development. The paper concludes with suggestions for improving and expanding this innovation and business cycle study.

Hood, Michael

2004-01-01T23:59:59.000Z

360

Photovoltaics: Life-cycle Analyses  

DOE Green Energy (OSTI)

Life-cycle analysis is an invaluable tool for investigating the environmental profile of a product or technology from cradle to grave. Such life-cycle analyses of energy technologies are essential, especially as material and energy flows are often interwoven, and divergent emissions into the environment may occur at different life-cycle-stages. This approach is well exemplified by our description of material and energy flows in four commercial PV technologies, i.e., mono-crystalline silicon, multi-crystalline silicon, ribbon-silicon, and cadmium telluride. The same life-cycle approach is applied to the balance of system that supports flat, fixed PV modules during operation. We also discuss the life-cycle environmental metrics for a concentration PV system with a tracker and lenses to capture more sunlight per cell area than the flat, fixed system but requires large auxiliary components. Select life-cycle risk indicators for PV, i.e., fatalities, injures, and maximum consequences are evaluated in a comparative context with other electricity-generation pathways.

Fthenakis V. M.; Kim, H.C.

2009-10-02T23:59:59.000Z

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Impact of entrainment and impingement on fish populations in the Hudson River Estuary. Volume II. Impingement impact analyses, evaluations of alternative screening devices, and critiques of utility testimony relating to density-dependent growth, the age-composition of the striped bass spawning stock, and the LMS real-time life cycle model  

Science Conference Proceedings (OSTI)

This volume includes a series of four exhibits relating to impacts of impingement on fish populations, together with a collection of critical evaluations of testimony prepared for the utilities by their consultants. The first exhibit is a quantitative evaluation of four sources of bias (collection efficiency, reimpingement, impingement on inoperative screens, and impingement survival) affecting estimates of the number of fish killed at Hudson River power plants. The two following exhibits contain, respectively, a detailed assessment of the impact of impingement on the Hudson River white perch population and estimates of conditional impingement mortality rates for seven Hudson River fish populations. The fourth exhibit is an evaluation of the engineering feasibility and potential biological effectiveness of several types of modified intake structures proposed as alternatives to cooling towers for reducing impingement impacts. The remainder of Volume II consists of critical evaluations of the utilities' empirical evidence for the existence of density-dependent growth in young-of-the-year striped bass and white perch, of their estimate of the age-composition of the striped bass spawning stock in the Hudson River, and of their use of the Lawler, Matusky, and Skelly (LMS) Real-Time Life Cycle Model to estimate the impact of entrainment and impingement on the Hudson River striped bass population.

Barnthouse, L. W.; Van Winkle, W.; Golumbek, J.; Cada, G. F.; Goodyear, C. P.; Christensen, S. W.; Cannon, J. B.; Lee, D. W.

1982-04-01T23:59:59.000Z

362

Life Cycle Inventory of a CMOS Chip  

E-Print Network (OSTI)

Reichl, H. “Life cycle inventory analysis and identificationAllen, D.T. ; “Life cycle inventory development for waferLife Cycle Inventory of a CMOS Chip Sarah Boyd and David

Boyd, Sarah; Dornfeld, David; Krishnan, Nikhil

2006-01-01T23:59:59.000Z

363

The DOE Water Cycle Pilot Study  

E-Print Network (OSTI)

The DOE Water Cycle Pilot Study N.L. Miller 1 *, A.W. KingCycle Research Strategy, DOE SC-0043, Office of BiologicalLBNL Report LBNL-53826. The DOE Water Cycle Pilot Study is

2003-01-01T23:59:59.000Z

364

Cycling on the Rise: Public Bicycles and other European Experiences | Open  

Open Energy Info (EERE)

Cycling on the Rise: Public Bicycles and other European Experiences Cycling on the Rise: Public Bicycles and other European Experiences Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Cycling on the Rise: Public Bicycles and other European Experiences Agency/Company /Organization: SpiCycles Focus Area: Transportation Resource Type: Publications, Lessons learned/best practices User Interface: Website Website: spicycles.velo.info/Portals/0/Deliverables/SpicyclesFinal_Booklet_smal Cost: Free Cycling on the Rise: Public Bicycles and other European Experiences Screenshot References: Cycling on the Rise: Public Bicycles and other European Experiences[1] "When the Spicycles project was launched in 2006, cycling was not the "hot" mode of transport that it has become today. As project partners, we wanted to gather experience related to specific areas of cycling policy.

365

STATE-OF-THE-ART AND EMERGING TRUCK ENGINE TECHNOLOGIES FOR OPTIMIZED PERFORMANCE, EMISSIONS AND LIFE CYCLE COSTS  

DOE Green Energy (OSTI)

The challenge for truck engine product engineering is not only to fulfill increasingly stringent emission requirements, but also to improve the engine's economical viability in its role as the backbone of our global economy. While societal impact and therefore emission limit values are to be reduced in big steps, continuous improvement is not enough but technological quantum leaps are necessary. The introduction and refinement of electronic control of all major engine systems has already been a quantum leap forward. Maximizing the benefits of these technologies to customers and society requires full use of parameter optimization and other enabling technologies. The next big step forward will be widespread use of exhaust aftertreatment on all transportation related diesel engines. While exhaust gas aftertreatment has been successfully established on gasoline (Otto cycle) engines, the introduction of exhaust aftertreatment especially for heavy-duty diesel engines will be much mo re demanding. Implementing exhaust gas aftertreatment into commercial vehicle applications is a challenging task but the emission requirements to be met starting in Europe, the USA and Japan in the 2005-2007 timeframe require this step. The engine industry will be able to implement the new technology if all stakeholders support the necessary decisions. One decision has already been taken: the reduction of sulfur in diesel fuel being comparable with the elimination of lead in gasoline as a prerequisite for the three-way catalyst. Now we have the chance to optimize ecology and economy of the Diesel engine simultaneously by taking the decision to provide an additional infrastructure for a NOx reduction agent needed for the introduction of the Selective Catalytic Reduction (SCR) technology that is already implemented in the electric power generation industry. This requires some effort, but the resulting societal benefits, fuel economy and vehicle life cycle costs are significantly better when compared to other competitive technologies. After long discussions this decision for SCR has been made in Europe and is supported by all truck and engine manufacturers. The necessary logistic support will be in place when it will be needed commercially in 2005. For the US the decision has to be taken this year in order to have the infrastructure available in 2007. It will enable the global engine industry to focus their R & D resources in one direction not only for 2007, but for the years beyond 2010 with the best benefit for the environment, the customers and the industry.

Schittler, M

2003-08-24T23:59:59.000Z

366

Study of Oil Degradation in Extended Idle Operation Heavy Duty Vehicles  

E-Print Network (OSTI)

Advances in engine oil technology and increased combustion efficiency has resulted in the longer oil intervals in vehicles. Current oil change interval practice only takes into account the mileage a vehicle has driven and does not consider other vehicle operations that affect oil life like extended idle. Routine oil sampling is one way to ensure optimal oil intervals, but the price continuous analysis can be prohibitive. It is possible to use on board diagnostic (OBD) data to correlate oil degradation to engine usage in order to develop an algorithm that is applicable to many vehicles. While much research has been conducted for light duty vehicles, little has been completed for heavy duty vehicles, in particular vehicles that idle a majority of their time. This study uses multiple heavy duty vehicles that are monitored by monthly routine oil analysis and logging of on board diagnostic data to determine the effects extended idle has on the wear rate of oil. The vehicles were used in their normal operation; this resulted in an average idle run time of 60% of run time and no less than 50% in a single vehicle. At each sample the quality of the oil and the operation of the engines were assessed. The results of the oil analysis showed very little degradation of oil. As expected, a negative correlation was seen in viscosity and total base number (TBN) but not abnormal when compared to base oil. Significant degradation was not seen even after using the vehicle passed the manufacturer recommended oil intervals. Analysis of engine operation showed that the temperature of the oil was optimal for 85% of idle operation. In addition, oil pressures at idle were sufficiently higher than the minimum pressure recommended by the manufacturer, but was less than half of the average in use oil pressure. The combination of low pressure and optimal temperature has resulted in little oil degradation. The results from the study have shown that extended idling in the study vehicles can be treated similar to long trip interval service for oil degradation. Additionally, extended idling did not result in abnormal engine wear or excessive contamination.

Kader, Michael Kirk

2013-05-01T23:59:59.000Z

367

Plasma Catalysis for NOx Reduction from Light-Duty Diesel Vehicles  

DOE Green Energy (OSTI)

On behalf of the Department of Energy's Office of FreedomCAR and Vehicle Technologies, we are pleased to introduce the Fiscal Year (FY) 2004 Annual Progress Report for the Advanced Combustion Engine R&D Sub-Program. The mission of the FreedomCAR and Vehicle Technologies Program is to develop more energy efficient and environmentally friendly highway transportation technologies that enable Americans to use less petroleum for their vehicles. The Advanced Combustion Engine R&D Sub-Program supports this mission by removing the critical technical barriers to commercialization of advanced internal combustion engines for light-, medium-, and heavy-duty highway vehicles that meet future Federal and state emissions regulations. The primary objective of the Advanced Combustion Engine R&D Sub-Program is to improve the brake thermal efficiency of internal combustion engines from 30 to 45 percent for light-duty applications by 2010; and 40 to 55 percent for heavy-duty applications by 2012; while meeting cost, durability, and emissions constraints. R&D activities include work on combustion technologies that increase efficiency and minimize in-cylinder formation of emissions, as well as aftertreatment technologies that further reduce exhaust emissions. Work is also being conducted on ways to reduce parasitic and heat transfer losses through the development and application of thermoelectrics and turbochargers that include electricity generating capability, and conversion of mechanically driven engine components to be driven via electric motors. This introduction serves to outline the nature, current progress, and future directions of the Advanced Combustion Engine R&D Sub-Program. The research activities of this Sub-Program are planned in conjunction with the FreedomCAR Partnership and the 21st Century Truck Partnership and are carried out in collaboration with industry, national laboratories, and universities. Because of the importance of clean fuels in achieving low emissions, R&D activities are closely coordinated with the relevant activities of the Fuel Technologies Sub-Program, also within the Office of FreedomCAR and Vehicle Technologies. Research is also being undertaken on hydrogen-fueled internal combustion engines to provide an interim hydrogen-based powertrain technology that promotes the longer-range FreedomCAR Partnership goal of transitioning to a hydrogen-fueled transportation system. Hydrogen engine technologies being developed have the potential to provide diesel-like engine efficiencies with near-zero emissions.

None

2005-12-15T23:59:59.000Z

368

Building Technologies Office: Life Cycle Inventory Database  

NLE Websites -- All DOE Office Websites (Extended Search)

Life Cycle Inventory Database to someone by E-mail Share Building Technologies Office: Life Cycle Inventory Database on Facebook Tweet about Building Technologies Office: Life...

369

NETL Life Cycle Analysis Fact Sheets  

NLE Websites -- All DOE Office Websites (Extended Search)

Life Cycle Analysis Fact Sheets Life Cycle Analysis Role of Alternative Energy Sources - Wind Technology Assessment PDF-372KB (Sept 2012) Role of Alternative Energy Sources -...

370

Federal Alternative Fuel Program Light Duty Vehicle Operations. Second annual report to Congress for fiscal year 1992  

DOE Green Energy (OSTI)

This annual report to Congress details the second year of the Federal light duty vehicle operations as required by Section 400AA(b)(1)(B) of the Energy Policy and Conservation Act as amended by the Alternative Motor Fuels Act of 1988, Public Law 100-494. In 1992, the Federal alternative fuel vehicle fleet expanded significantly, from the 65 M85 (85 percent methanol and 15 percent unleaded gasoline) vehicles acquired in 1991 to an anticipated total of 3,267 light duty vehicles. Operating data are being collected from slightly over 20 percent, or 666, of these vehicles. The 601 additional vehicles that were added to the data collection program in 1992 include 75 compressed natural gas Dodge full-size (8-passenger) vans, 25 E85 (85 percent denatured ethanol and 15 percent unleaded gasoline) Chevrolet Lumina sedans, 250 M85 Dodge Spirit sedans (planned to begin operation in fiscal year 1993), and 251 compressed natural gas Chevrolet C-20 pickup trucks. Figure ES-1 illustrates the locations where the Federal light duty alternative fuel vehicles that are participating in the data collection program are operating. The primary criteria for placement of vehicles will continue to include air quality attainment status and the availability of an alternative fuel infrastructure to support the vehicles. This report details the second year of the Federal light duty vehicle operations, from October 1991 through September 1992.

Not Available

1993-07-01T23:59:59.000Z

371

Department of Mechanical and Nuclear Engineering Spring 2012 Heavy-Duty Diesel Engine Friction Reduction Testing and Analysis  

E-Print Network (OSTI)

PENNSTATE Department of Mechanical and Nuclear Engineering Spring 2012 Heavy-Duty Diesel Engine Friction Reduction Testing and Analysis Overview Volvo Group Powertrain Engineering is interested in increasing fuel efficiency through the reduction of parasitic friction and pumping losses. A test cell

Demirel, Melik C.

372

Life Cycle Analysis: Integrated Gasification Combined Cycle (IGCC) Power Plant  

NLE Websites -- All DOE Office Websites (Extended Search)

Life Cycle Analysis: Integrated Life Cycle Analysis: Integrated Gasification Combined Cycle (IGCC) Power Plant Revision 2, March 2012 DOE/NETL-2012/1551 Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or

373

Fuel-cycle energy and emissions impacts of tripled fuel economy vehicles  

DOE Green Energy (OSTI)

This paper presents estimates of the full cycle energy and emissions impacts of light-duty vehicles with tripled fuel economy (3X vehicles) as currently being developed by the Partnership for a New Generation of Vehicles (PNGV). Seven engine and fuel combinations were analyzed: reformulated gasoline, methanol, and ethanol in spark-ignition, direct-injection engines; low sulfur diesel and dimethyl ether in compression-ignition, direct-injection engines; and hydrogen and methanol in fuel-cell vehicles. The fuel efficiency gain by 3X vehicles translated directly into reductions in total energy demand, petroleum demand, and carbon dioxide emissions. The combination of fuel substitution and fuel efficiency resulted in substantial reductions in emissions of nitrogen oxide, carbon monoxide, volatile organic compounds, sulfur oxide, and particulate matter smaller than 10 microns, particularly under the High Market Share Scenario.

Mintz, M.M.; Wang, M.Q.; Vyas, A.D.

1998-12-31T23:59:59.000Z

374

Towards Understanding the Cesium Cycle of the Persistent H{sup -} Beams at SNS  

Science Conference Proceedings (OSTI)

This paper describes the accomplishments of the SNS H{sup -} ion source, which delivers routinely {approx}50 mA at a 5.4% duty factor with {approx}99% availability, enabling 1 MW beams for neutron production with {approx}90% availability. It discusses the need for increasing reliability and beam current. But mostly it focuses on its unexpected feature: H{sup -} beams that are apparently persistent for up to 5 weeks without adding Cs after an initial dose of less than {approx}5 mg. Thermal emission and sputtering are qualitatively evaluated, and appear consistent with a negligible Cs sputter rate after the initial dose disappears from the Cs plasma. It concludes with a list of future experiments that can shed more light on this apparently unique Cs cycle.

Stockli, Martin P.; Han, B. X.; Murray, S. N.; Pennisi, T. R.; Santana, M.; Welton, R. F. [Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States)

2011-09-26T23:59:59.000Z

375

Microsoft Word - EXT-12-27320_Idle-Stop_Light_Duty_Passenger_Vehicles.docx  

NLE Websites -- All DOE Office Websites (Extended Search)

7320 7320 Quantifying the Effects of Idle-Stop Systems on Fuel Economy in Light- Duty Passenger Vehicles Jeffrey Wishart Matthew Shirk Contract No. DE-FC26-05NT42486 December 2012 DISCLAIMER This information was prepared as an account of work sponsored by an agency of the U.S. Government. Neither the U.S. Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness, of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. References herein to any specific commercial product, process, or service by trade name, trade mark, manufacturer, or otherwise,

376

Heavy-Duty Truck Idle Reduction Technology Demonstations - 2005 Status Report  

NLE Websites -- All DOE Office Websites (Extended Search)

June 30, 2006 June 30, 2006 Heavy-Duty Truck Idle Reduction Technology Demonstrations 2005 Status Report Fred Wagner Energetics Incorporated NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement,

377

Experimental analysis of pressure distribution in a twin screw compressor for multiphase duties  

SciTech Connect

This paper presents the results of an experimental investigation of pressure distribution inside working chamber of a twin screw compressor for multiphase duties. A mathematical model for describing the pressure distribution inside working chamber is proposed. By means of a small pressure transducer embedded into the groove at the root of the rotor, the pressure distributions of a multiphase compressor under various running conditions have been recorded successfully to verify the model. It is found that the pressure curve during the discharge process has a higher level under the conditions of the lower gas void fraction, higher discharge pressure, higher rotational speed and higher inlet pressure. The pressure distribution calculated by model in this paper shows good agreement with the data recorded by a small pressure sensor in a prototype multiphase compressor at the high gas void fractions under different operating conditions. (author)

Cao, Feng; Gao, Tieyu; Li, Songshan; Xing, Ziwen; Shu, Pengcheng [School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049 (China)

2011-01-15T23:59:59.000Z

378

Efficiency Improvement Opportunities for Light-Duty Natural-Gas-Fueled Vehicles  

Science Conference Proceedings (OSTI)

The purpose of this report is to evaluate and make recommendations concerning technologies that promise to improve the efilciency of compressed natural gas (CNG) light-duty vehicles. Technical targets for CNG automotive technology given in the March 1998 OffIce of Advanced Automotive Technologies research and development plan were used as guidance for this effort. The technical target that necessitates this current study is to validate technologies that enable CNG light vehicles to have at least 10% greater - fuel economy (on a miles per gallon equivalent basis) than equivalent gasoline vehicles by 2006. Other tar- gets important to natural gas (NG) automotive technology and this study are to: (1) increase CNG vehicle range to 380 miles, (2) reduce the incremental vehicle cost (CNG vs gasoline) to $1500, and (3) meet the California ultra low-emission vehicle (ULEV) and Federal Tier 2 emission standards expected to be in effect in 2004.

Staunton, R.H.; Thomas, J.F.

1998-12-01T23:59:59.000Z

379

Heavy-Duty Emissions Control: Plasma-Facilitated vs Reformer-Assisted Lean NOx Catalysis  

DOE Green Energy (OSTI)

Progress has been made in the control of combustion processes to limit the formation of environmentally harmful species, but lean burn vehicles, such as those powered by diesel engines used for the majority of commercial trucking and off-road applications, remain a major source of nitrogen oxides (NOx) and particulate matter (PM) emissions. Tighter control of the combustion process coupled with exhaust gas recirculation has brought emissions in line with 2004 targets worldwide. Additional modifications to the engine control system, somewhat limited NOx control, and PM filters will likely allow the 2007 limits to be met for the on-highway regulations for heavy-duty engines in the United States. Concern arises when the NOx emission limit of 0.2 g/bhphr set for the year 2010 is considered.

(1)Aardahl, C; (1)Rozmiarek, R; (1)Rappe, K; (1)Mendoza, D (2)Park, P

2003-08-24T23:59:59.000Z

380

Review of Heavy-Duty Engine Combustion Research at Sandia National Laboratories  

DOE Green Energy (OSTI)

The objectives of this paper are to describe the research efforts in diesel engine combustion at Sandia National Laboratories' Combustion Research Facility and to provide recent experimental results. We have four diesel engine experiments supported by the Department of Energy, Office of Heavy Vehicle Technologies: a one-cylinder version of a Cummins heavy-duty engine, a diesel simulation facility, a one-cylinder Caterpillar engine to evaluate combustion of alternative fuels, and a homogeneous-charge, compression-ignition (HCCI) engine facility is under development. Recent experimental results to be discussed are: the effects of injection timing and diluent addition on late-combustion soot burnout, diesel-spray ignition and premixed-burn behavior, a comparison of the combustion characteristics of M85 (a mixture of 85% methanol and 15% gasoline) and DF2 (No.2 diesel reference fuel), and a description of our HCCI experimental program and modeling work.

Robert W. Carling; Gurpreet Singh

2000-06-19T23:59:59.000Z

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
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381

A high-gradient high-duty-factor RF photo-cathode electron gun  

Science Conference Proceedings (OSTI)

We describe the analysis and preliminary design of a high-gradient, high-duty factor RF photocathode gun. The gun is designed to operate at high repetition rate or CW, with high gradient on the cathode surface to minimize emittance growth due to space charge forces at high bunch charge. The gun may also be operated in a solenoidal magnetic field for emittance compensation. The design is intended for use in short-pulse, high-charge, and high-repetition rate applications such as linac based X-ray sources. We present and compare the results of gun simulations using different codes, as well as RF and thermal analysis of the structure.

Robert Rimmer; N. Hartman; S. Lidia; S.H. Wang

2002-08-01T23:59:59.000Z

382

Fuel savings and emissions reductions from light duty fuel cell vehicles  

DOE Green Energy (OSTI)

Fuel cell vehicles (FCVs) operate efficiently, emit few pollutants, and run on nonpetroleum fuels. Because of these characteristics, the large-scale deployment of FCVs has the potential to lessen US dependence on foreign oil and improve air quality. This study characterizes the benefits of large-scale FCV deployment in the light duty vehicle market. Specifically, the study assesses the potential fuel savings and emissions reductions resulting from large-scale use of these FCVs and identifies the key parameters that affect the scope of the benefits from FCV use. The analysis scenario assumes that FCVs will compete with gasoline-powered light trucks and cars in the new vehicle market for replacement of retired vehicles and will compete for growth in the total market. Analysts concluded that the potential benefits from FCVs, measured in terms of consumer outlays for motor fuel and the value of reduced air emissions, are substantial.

Mark, J.; Ohi, J.M.; Hudson, D.V. Jr.

1994-04-01T23:59:59.000Z

383

Geothermal heat cycle research: Supercritical cycle with horizontal counterflow condenser  

DOE Green Energy (OSTI)

The Heat Cycle Research Program, which is being conducted for the Department of Energy, has as its objective the development of the technology for effecting the improved utilization of moderate temperature geothermal resources. To meet this objective, the program has as one of its goals to improve the performance of geothermal binary cycles to levels approaching the practicable thermodynamic maximum. In pursuit of this goal, tests are being conducted at the Heat Cycle Research Facility located at the DOE Geothermal Test Facility, East Mesa, California. The current testing involves the investigation of binary power cycle performance utilizing mixtures of non-adjacent hydrocarbons as the working fluids, with supercritical vaporization and in-tube condensation of the working fluid. In addition to the present test program, preparations are being made to investigate the binary cycle performance improvements which can be achieved by allowing supersaturated vapor expansions in the turbine. These efforts are anticipated to verify that through the utilization of these advanced power cycle concepts and allowing the supersaturated turbine expansions, improvements of up to 28% in the net geofluid effectiveness (net watt hours plant output per pound of geofluid) over conventional binary power plants can be achieved. Results are presented for the recent testing including those tests examining the performance of the countercurrent condenser at different tube inclinations. Performance of the heaters and the condenser in a vertical orientation can be predicted well with existing methods and data. The condenser in its near horizontal orientation performs slightly worse than in its vertical orientation. Some problems have been encountered in predicting the performance in the horizontal orientation. There is no evidence of departure from integral condensation in either orientation.

Mines, G.L.; Swank, W.D.; Bliem, C.J.

1987-01-01T23:59:59.000Z

384

Regulated Emissions from Biodiesel Tested in Heavy-Duty Engines Meeting 2004 Emission Standards  

DOE Green Energy (OSTI)

Biodiesel produced from soybean oil, canola oil, yellow grease, and beef tallow was tested in two heavy-duty engines. The biodiesels were tested neat and as 20% by volume blends with a 15 ppm sulfur petroleum-derived diesel fuel. The test engines were the following: 2002 Cummins ISB and 2003 DDC Series 60. Both engines met the 2004 U.S. emission standard of 2.5 g/bhp-h NO{sub x}+HC (3.35 g/kW-h) and utilized exhaust gas recirculation (EGR). All emission tests employed the heavy-duty transient procedure as specified in the U.S. Code of Federal Regulations. Reduction in PM emissions and increase in NO{sub x} emissions were observed for all biodiesels in all engines, confirming observations made in older engines. On average PM was reduced by 25% and NO{sub x} increased by 3% for the two engines tested for a variety of B20 blends. These changes are slightly larger in magnitude, but in the same range as observed in older engines. The cetane improver 2-ethyl hexyl nitrate was shown to have no measurable effect on NO{sub x} emissions from B20 in these engines, in contrast to observations reported for older engines. The effect of intake air humidity on NO{sub x} emissions from the Cummins ISB was quantified. The CFR NO{sub x}/humidity correction factor was shown to be valid for an engine equipped with EGR, operating at 1700 m above sea level, and operating on conventional or biodiesel.

McCormick, R. L.; Tennant, C. J.; Hayes, R. R.; Black, S.; Ireland, J.; McDaniel, T.; Williams, A.; Frailey, M.; Sharp, C. A.

2005-11-01T23:59:59.000Z

385

Prospective Life-Cycle Modeling of Novel Carbon Capture Materials  

NLE Websites -- All DOE Office Websites (Extended Search)

Prospective Life-Cycle Modeling of Novel Carbon Capture Materials Prospective Life-Cycle Modeling of Novel Carbon Capture Materials Speaker(s): Roger Sathre Date: December 5, 2011 - 3:30pm Location: 90-4133 Seminar Host/Point of Contact: Anita Estner Barbara Adams In this presentation we describe the prospective life-cycle modeling of metal-organic frameworks (MOF), a novel type of material with the potential for efficiently capturing CO2. Life-cycle modeling of emerging technologies, conducted early in the innovation process, can generate knowledge that can feed back to inform scientific discovery and development. We discuss the challenges of credibly modeling a system that does not yet exist, and describe methodological approaches including parametric system modeling (quantifying relations between system elements), scenario projections (defining plausible pathways for system scale-up),

386

Technology Analysis - Battery Recycling and Life Cycle Analysis  

NLE Websites -- All DOE Office Websites (Extended Search)

Lithium-Ion Battery Recycling and Life Cycle Analysis Lithium-Ion Battery Recycling and Life Cycle Analysis diagram of the battery recycling life cycle Several types of recycling processes are available, recovering materials usable at different stages of the production cycle- from metallic elements to materials that can be reused directly in new batteries. Recovery closer to final usable form avoids more impact-intensive process steps. Portions courtesy of Umicore, Inc. To identify the potential impacts of the growing market for automotive lithium-ion batteries, Argonne researchers are examining the material demand and recycling issues related to lithium-ion batteries. Research includes: Conducting studies to identify the greenest, most economical recycling processes, Investigating recycling practices to determine how much of which

387

Life Cycle Environmental Assessment of the Internet: The Benefits and  

NLE Websites -- All DOE Office Websites (Extended Search)

Life Cycle Environmental Assessment of the Internet: The Benefits and Life Cycle Environmental Assessment of the Internet: The Benefits and Impacts of Innovative Technologies Speaker(s): Oliver Jolliet Date: July 15, 2004 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Thomas McKone This seminar starts by providing a short introduction to the field of Environmental Life Cycle Assessment (LCA) through a practical example of packaging. It will then develop the case of the Life Cycle Benefits and Impacts of the Internet; raising the different scientific challenges that LCA faces to provide relevant results for innovative technologies.--The rapid development of the Internet and the related potential impacts on and benefits for the environment deserves attention. The infrastructure that supports a university's use of the Internet has been comprehensively

388

The Air or Brayton Cycle Solvent Recovery System  

E-Print Network (OSTI)

The required temperature and technique for condensing common industrial solvents from the exhaust air of drying ovens is explained. The benefits of the Air Cycle for this application are discussed. The operation of the 8000 CFM Air Cycle Solvent Recovery System developed by the AiResearch Manufacturing Company of California under contract to the Department of Energy is discussed. Performance data for the recovery of solvents from an industrial drying oven is presented. The advantages of the "free spindle" arrangement as an alternate to the present gear drive are explained. The simple method for adjusting and controlling the turbine exhaust temperature for the "free spindle" arrangement is explained. The application of the Air Cycle for condensing solvent vapors from inert atmosphere ovens and from activated carbon desorbed with nitrogen is also described. Relative merits of the Air Cycle System compared with other available methods of solvent recovery are discussed.

Fox, B. J.

1986-06-01T23:59:59.000Z

389

Answering Key Fuel Cycle Questions  

Science Conference Proceedings (OSTI)

Given the range of fuel cycle goals and criteria, and the wide range of fuel cycle options, how can the set of options eventually be narrowed in a transparent and justifiable fashion? It is impractical to develop all options. We suggest an approach that starts by considering a range of goals for the Advanced Fuel Cycle Initiative (AFCI) and then posits seven questions, such as whether Cs and Sr isotopes should be separated from spent fuel and, if so, what should be done with them. For each question, we consider which of the goals may be relevant to eventually providing answers. The AFCI program has both ''outcome'' and ''process'' goals because it must address both waste already accumulating as well as completing the fuel cycle in connection with advanced nuclear power plant concepts. The outcome objectives are waste geologic repository capacity and cost, energy security and sustainability, proliferation resistance, fuel cycle economics, and safety. The process objectives are rea diness to proceed and adaptability and robustness in the face of uncertainties.

Piet, S.J.; Dixon, B.W.; Bennett, R.G.; Smith, J.D.; Hill, R.N.

2004-10-03T23:59:59.000Z

390

Technology Insights and Perspectives for Nuclear Fuel Cycle Concepts  

SciTech Connect

The following report provides a rich resource of information for exploring fuel cycle characteristics. The most noteworthy trends can be traced back to the utilization efficiency of natural uranium resources. By definition, complete uranium utilization occurs only when all of the natural uranium resource can be introduced into the nuclear reactor long enough for all of it to undergo fission. Achieving near complete uranium utilization requires technologies that can achieve full recycle or at least nearly full recycle of the initial natural uranium consumed from the Earth. Greater than 99% of all natural uranium is fertile, and thus is not conducive to fission. This fact requires the fuel cycle to convert large quantities of non-fissile material into fissile transuranics. Step increases in waste benefits are closely related to the step increase in uranium utilization going from non-breeding fuel cycles to breeding fuel cycles. The amount of mass requiring a disposal path is tightly coupled to the quantity of actinides in the waste stream. Complete uranium utilization by definition means that zero (practically, near zero) actinide mass is present in the waste stream. Therefore, fuel cycles with complete (uranium and transuranic) recycle discharge predominately fission products with some actinide process losses. Fuel cycles without complete recycle discharge a much more massive waste stream because only a fraction of the initial actinide mass is burned prior to disposal. In a nuclear growth scenario, the relevant acceptable frequency for core damage events in nuclear reactors is inversely proportional to the number of reactors deployed in a fuel cycle. For ten times the reactors in a fleet, it should be expected that the fleet-average core damage frequency be decreased by a factor of ten. The relevant proliferation resistance of a fuel cycle system is enhanced with: decreasing reliance on domestic fuel cycle services, decreasing adaptability for technology misuse, enablement of material accountability, and decreasing material attractiveness.

S. Bays; S. Piet; N. Soelberg; M. Lineberry; B. Dixon

2010-09-01T23:59:59.000Z

391

Simulation and performance analysis of basic GAX and advanced GAX cycles with ammonia/water and ammonia/water/LiBr absorption fluids  

Science Conference Proceedings (OSTI)

The generator-absorber heat exchange (GAX) and branched GAX cycles are generally considered with NH{sub 3}/H{sub 2}O as their working fluid. The potential consequences of using a ternary mixture of NH{sub 3}/H{sub 2}O/LiBr (advanced fluids) in the GAX and Branched GAX (advanced cycles) are discussed in this study. A modular steady state absorption simulation model(ABSIM) was used to investigate the potential of combining the above advanced cycles with the advanced fluids. ABSIM is capable of modeling varying cycle configurations with different working fluids. Performance parameters of the cycles, including coefficient of performance (COP) and heat duties, were investigated as functions of different operating parameters in the cooling mode for both the NH {sub 3}/H{sub 2}O binary and the NH{sub 3}/H{sub 2}O/LiBr ternary mixtures. High performance potential of GAX and branched GAX cycles using the NH{sub 3}/H{sub 2}O/LiBr ternary fluid mixture was achieved especially at the high range of firing temperatures exceeding 400{degrees}F. The cooling COP`s have been improved by approximately 21% over the COP achieved with the NH{sub 3}/H{sub 2}O binary mixtures. These results show the potential of using advanced cycles with advanced fluid mixtures (ternary or quaternary fluid mixtures).

Zaltash, A.; Grossman, G.

1996-03-01T23:59:59.000Z

392

Climate impacts of bioenergy: Inclusion of carbon cycle and albedo dynamics in life cycle impact assessment  

SciTech Connect

Life cycle assessment (LCA) can be an invaluable tool for the structured environmental impact assessment of bioenergy product systems. However, the methodology's static temporal and spatial scope combined with its restriction to emission-based metrics in life cycle impact assessment (LCIA) inhibits its effectiveness at assessing climate change impacts that stem from dynamic land surface-atmosphere interactions inherent to all biomass-based product systems. In this paper, we focus on two dynamic issues related to anthropogenic land use that can significantly influence the climate impacts of bioenergy systems: i) temporary changes to the terrestrial carbon cycle; and ii) temporary changes in land surface albedo-and illustrate how they can be integrated within the LCA framework. In the context of active land use management for bioenergy, we discuss these dynamics and their relevancy and outline the methodological steps that would be required to derive case-specific biogenic CO{sub 2} and albedo change characterization factors for inclusion in LCIA. We demonstrate our concepts and metrics with application to a case study of transportation biofuel sourced from managed boreal forest biomass in northern Europe. We derive GWP indices for three land management cases of varying site productivities to illustrate the importance and need to consider case- or region-specific characterization factors for bioenergy product systems. Uncertainties and limitations of the proposed metrics are discussed. - Highlights: Black-Right-Pointing-Pointer A method for including temporary surface albedo and carbon cycle changes in Life Cycle Impact Assessment (LCIA) is elaborated. Black-Right-Pointing-Pointer Concepts are applied to a single bioenergy case whereby a range of feedstock productivities are shown to influence results. Black-Right-Pointing-Pointer Results imply that case- and site-specific characterization factors can be essential for a more informed impact assessment. Black-Right-Pointing-Pointer Uncertainties and limitations of the proposed methodologies are elaborated.

Bright, Ryan M., E-mail: ryan.m.bright@ntnu.no; Cherubini, Francesco; Stromman, Anders H.

2012-11-15T23:59:59.000Z

393

Measured Laboratory and In-Use Fuel Economy Observed over Targeted Drive Cycles for Comparable Hybrid and Conventional Package Delivery Vehicles  

Science Conference Proceedings (OSTI)

In-use and laboratory-derived fuel economies were analyzed for a medium-duty hybrid electric drivetrain with 'engine off at idle' capability and a conventional drivetrain in a typical commercial package delivery application. Vehicles studied included eleven 2010 Freightliner P100H hybrids in service at a United Parcel Service facility in Minneapolis during the first half of 2010. The hybrids were evaluated for 18 months against eleven 2010 Freightliner P100D diesels at the same facility. Both vehicle groups use the same 2009 Cummins ISB 200-HP engine. In-use fuel economy was evaluated using UPS's fueling and mileage records, periodic ECM image downloads, and J1939 CAN bus recordings during the periods of duty cycle study. Analysis of the in-use fuel economy showed 13%-29% hybrid advantage depending on measurement method, and a delivery route assignment analysis showed 13%-26% hybrid advantage on the less kinetically intense original diesel route assignments and 20%-33% hybrid advantage on the more kinetically intense original hybrid route assignments. Three standardized laboratory drive cycles were selected that encompassed the range of real-world in-use data. The hybrid vehicle demonstrated improvements in ton-mi./gal fuel economy of 39%, 45%, and 21% on the NYC Comp, HTUF Class 4, and CARB HHDDT test cycles, respectively.

Lammert, M. P.; Walkowicz, K.; Duran, A.; Sindler, P.

2012-10-01T23:59:59.000Z

394

Ultrafast thermal cycling of solar panels  

SciTech Connect

Two new cyclers that utilize a novel hybrid approach to perform fast thermal cycling of solar panels have been built and are now operational in the Mechanics and Materials Technology Center at The Aerospace Corporation. These cyclers are part of a continuing effort to minimize solar cell life test durations by accelerating the cycling rates. These fully automated cyclers, which provide continuous unmanned cycling in a gaseous nitrogen atmosphere, can execute 5 min cycles, thus yielding in excess of 100,000 cycles per year. They also have a unique capability of verifying solar panel functionality without interruption of cycling, so that cycling doesn`t continue on nonfunctioning panels.

Wall, T.S.; Valenzuela, P.R.; Sue, C.

1998-08-15T23:59:59.000Z

395

H gas turbine combined cycle  

SciTech Connect

A major step has been taken in the development of the Next Power Generation System--``H`` Technology Combined Cycle. This new gas turbine combined-cycle system increases thermal performance to the 60% level by increasing gas turbine operating temperature to 1,430 C (2,600 F) at a pressure ratio of 23 to 1. Although this represents a significant increase in operating temperature for the gas turbine, the potential for single digit NOx levels (based upon 15% O{sub 2}, in the exhaust) has been retained. The combined effect of performance increase and environmental control is achieved by an innovative closed loop steam cooling system which tightly integrates the gas turbine and steam turbine cycles. The ``H`` Gas Turbine Combined Cycle System meets the goals and objectives of the DOE Advanced Turbine System Program. The development and demonstration of this new system is being carried out as part of the Industrial/Government cooperative agreement under the ATS Program. This program will achieve first commercial operation of this new system before the end of the century.

Corman, J.

1995-12-31T23:59:59.000Z

396

LDPC codes from Singer cycles  

Science Conference Proceedings (OSTI)

The main goal of coding theory is to devise efficient systems to exploit the full capacity of a communication channel, thus achieving an arbitrarily small error probability. Low Density Parity Check (LDPC) codes are a family of block codes-characterised ... Keywords: LDPC Codes, Projective spaces, Singer cycles

Luca Giuzzi; Angelo Sonnino

2009-04-01T23:59:59.000Z

397

Butterfly Diagram and Activity Cycles in HR 1099  

E-Print Network (OSTI)

We analyze photometric data of the active RS CVn--type star HR 1099 for the years 1975--2006 with an inversion technique and reveal the nature of two activity cycles of 15--16 yr and 5.3$\\pm$0.1 yr duration. The 16 yr cycle is related to variations of the total spot area and is coupled with the differential rotation, while the 5.3 yr cycle is caused by the symmetric redistribution of the spotted area between the opposite stellar hemispheres (flip-flop cycle). We recover long-lived active regions comprising two active longitudes that migrate in the orbital reference frame with a variable rate because of the differential rotation along with changes in the mean spot latitudes. The migration pattern is periodic with the 16 yr cycle. Combining the longitudinal migration of the active regions with a previously measured differential rotation law, we recover the first stellar butterfly diagram without an assumption about spot shapes. We find that mean latitudes of active regions at opposite longitudes change antisymmetrically in the course of the 16 yr cycle: while one active region migrates to the pole, the other approaches the equator. This suggests a precession of the global magnetic field with respect to the stellar rotational axis.

S. V. Berdyugina; G. W. Henry

2007-03-20T23:59:59.000Z

398

350 MW(t) design fuel cycle selection. Revision 1  

Science Conference Proceedings (OSTI)

This document discusses the results of this evaluation and a recommendation to retain the graded fuel cycle in which one-half of the fuel elements are exchanged at each refueling. This recommendation is based on the better performance of the graded cycle relative to the evaluation criteria of both economics and control margin. A choice to retain the graded cycle and a power density of 5.9 MW/m{sup 3} for the upcoming conceptual design phase was deemed prudent for the following reasons: the graded cycle has significantly better economics, and essentially the same expected availability factor as the batch design, when both are evaluated against the same requirements, including water ingress; and the reduction in maximum fuel pin power peaking in the batch design compared to the graded cycle is only a few percent and gas hot streaks are not improved by changing to a batch cycle. The preliminary 2-D power distribution studies for both designs showed that maximum fuel pin power peaking, particularly near the inner reflector, was high for both designs and nearly the same in magnitude. 10 figs., 9 tabs.

Lane, R.K.; Lefler, W.; Shirley, G.

1986-01-01T23:59:59.000Z

399

Terrestrial carbon cycle dynamics under recent and future climate change  

E-Print Network (OSTI)

The behavior of the terrestrial carbon cycle under historical and future climate change is examined using the University of Victoria Earth System Climate Model, now coupled to a dynamic terrestrial vegetation and global carbon cycle model. When forced by historical emissions of CO 2 from fossil fuels and land-use change, the coupled climate–carbon cycle model accurately reproduces historical atmospheric CO 2 trends, as well as terrestrial and oceanic uptake for the past two decades. Under six twenty-first-century CO 2 emissions scenarios, both terrestrial and oceanic carbon sinks continue to increase, though terrestrial uptake slows in the latter half of the century. Climate–carbon cycle feedbacks are isolated by comparing a coupled model run with a run where climate and the carbon cycle are uncoupled. The modeled positive feedback between the carbon cycle and climate is found to be relatively small, resulting in an increase in simulated CO 2 of 60 ppmv at the year 2100. Including non-CO 2 greenhouse gas forcing and increasing the model’s climate sensitivity increase the effect of this feedback to 140 ppmv. The UVic model does not, however, simulate a switch from a terrestrial carbon sink to a source during the twenty-first century, as earlier studies have suggested. This can be explained by a lack of substantial reductions in simulated vegetation productivity due to climate changes. 1.

H. Damon Matthews; Andrew J. Weaver; Katrin; J. Meissner

2005-01-01T23:59:59.000Z

400

Impacts of ethanol fuel level on emissions of regulated and unregulated pollutants from a fleet of gasoline light-duty vehicles  

SciTech Connect

The study investigated the impact of ethanol blends on criteria emissions (THC, NMHC, CO, NOx), greenhouse gas (CO2), and a suite of unregulated pollutants in a fleet of gasoline-powered light-duty vehicles. The vehicles ranged in model year from 1984 to 2007 and included one Flexible Fuel Vehicle (FFV). Emission and fuel consumption measurements were performed in duplicate or triplicate over the Federal Test Procedure (FTP) driving cycle using a chassis dynamometer for four fuels in each of seven vehicles. The test fuels included a CARB phase 2 certification fuel with 11% MTBE content, a CARB phase 3 certification fuel with a 5.7% ethanol content, and E10, E20, E50, and E85 fuels. In most cases, THC and NMHC emissions were lower with the ethanol blends, while the use of E85 resulted in increases of THC and NMHC for the FFV. CO emissions were lower with ethanol blends for all vehicles and significantly decreased for earlier model vehicles. Results for NOx emissions were mixed, with some older vehicles showing increases with increasing ethanol level, while other vehicles showed either no impact or a slight, but not statistically significant, decrease. CO2 emissions did not show any significant trends. Fuel economy showed decreasing trends with increasing ethanol content in later model vehicles. There was also a consistent trend of increasing acetaldehyde emissions with increasing ethanol level, but other carbonyls did not show strong trends. The use of E85 resulted in significantly higher formaldehyde and acetaldehyde emissions than the specification fuels or other ethanol blends. BTEX and 1,3-butadiene emissions were lower with ethanol blends compared to the CARB 2 fuel, and were almost undetectable from the E85 fuel. The largest contribution to total carbonyls and other toxics was during the cold-start phase of FTP.

Karavalakis, Georgios; Durbin, Thomas; Shrivastava, ManishKumar B.; Zheng, Zhongqing; Villella, Phillip M.; Jung, Hee-Jung

2012-03-30T23:59:59.000Z

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Experimental Investigation of Fuel-Reactivity Controlled Compression Ignition (RCCI) Combustion Mode in a Multi-Cylinder, Light-Duty Diesel Engine  

DOE Green Energy (OSTI)

An experimental study was performed to provide the combustion and emission characteristics resulting from fuel-reactivity controlled compression ignition (RCCI) combustion mode utilizing dual-fuel approach in a light-duty, multi-cylinder diesel engine. In-cylinder fuel blending using port fuel injection of gasoline before intake valve opening (IVO) and early-cycle, direct injection of diesel fuel was used as the charge preparation and fuel blending strategy. In order to achieve the desired auto-ignition quality through the stratification of the fuel-air equivalence ratio ( ), blends of commercially available gasoline and diesel fuel were used. Engine experiments were performed at an engine speed of 2300rpm and an engine load of 4.3bar brake mean effective pressure (BMEP). It was found that significant reduction in both nitrogen oxide (NOx) and particulate matter (PM) was realized successfully through the RCCI combustion mode even without applying exhaust gas recirculation (EGR). However, high carbon monoxide (CO) and hydrocarbon (HC) emissions were observed. The low combustion gas temperature during the expansion and exhaust processes seemed to be the dominant source of high CO emissions in the RCCI combustion mode. The high HC emissions during the RCCI combustion mode could be due to the increased combustion quenching layer thickness as well as the -stratification at the periphery of the combustion chamber. The slightly higher brake thermal efficiency (BTE) of the RCCI combustion mode was observed than the other combustion modes, such as the conventional diesel combustion (CDC) mode, and single-fuel, premixed charge compression ignition (PCCI) combustion mode. The parametric study of the RCCI combustion mode revealed that the combustion phasing and/or the peak cylinder pressure rise rate of the RCCI combustion mode could be controlled by several physical parameters premixed ratio (rp), intake swirl intensity, and start of injection (SOI) timing of directly injected fuel unlike other low temperature combustion (LTC) strategies.

Cho, Kukwon [ORNL; Curran, Scott [ORNL; Prikhodko, Vitaly Y [ORNL; Sluder, Scott [ORNL; Parks, II, James E [ORNL; Wagner, Robert M [ORNL

2011-01-01T23:59:59.000Z

402

SCR SYSTEMS FOR HEAVY DUTY TRUCKS: PROGRESS TOWARDS MEETING EURO 4 EMISSION STANDARDS IN 2005  

DOE Green Energy (OSTI)

Emissions of diesel engines contain some components, which support the generation of smog and which are classified hazardous. Exhaust gas aftertreatment is a powerful tool to reduce the NOx and Particulate emissions. The NOx-emission can be reduced by the SCR technology. SCR stands for Selective Catalytic Reduction. A reduction agent has to be injected into the exhaust upstream of a catalyst. On the catalyst the NOx is reduced to N2 (Nitrogen) and H2O (Water). This catalytic process was developed in Japan about 30 years ago to reduce the NOx emission of coal-fired power plants. The first reduction agent used was anhydrous ammonia (NH3). SCR technology was used with diesel engines starting mid of the 80s. First applications were stationary operating generator-sets. In 1991 a joint development between DaimlerChrysler, MAN, IVECO and Siemens was started to use SCR technology for the reduction of heavy duty trucks. Several fleet tests demonstrated the durability of the systems. To day, SCR technology is the most promising technology to fulfill the new European Regulations EURO 4 and EURO 5 being effective Oct. 2005 and Oct. 2008. The efficient NOx reduction of the catalyst allows an engine calibration for low fuel consumption. DaimlerChrysler decided to use the SCR technology on every heavy duty truck and bus in Europe and many other truck manufacturers will introduce SCR technology to fulfill the 2005 emission regulation. The truck manufacturers in Europe agreed to use aqueous solution of Urea as reducing agent. The product is called AdBlue. AdBlue is a non toxic, non smelling liquid. The consumption is about 5% of the diesel fuel consumption to reduce the NOx emissions. A small AdBlue tank has to be installed to the vehicle. With an electronically controlled dosing system the AdBlue is injected into the exhaust. The dosing system is simple and durable. It has proven its durability during winter and summer testing as well as in fleet tests. The infrastructure for AdBlue is under evaluation in Europe by Urea Producers and Mineral Oil companies to be readily available in time. Urea is one of the most common chemical products in the world and the production and the distribution very much experienced. However, a pure grade is needed for automotive application and requires special attention.

Frank, W; Huethwohl, G; Maurer, B

2003-08-24T23:59:59.000Z

403

Comparison of Life Cycle Emissions and Energy Consumption for  

E-Print Network (OSTI)

Comparison of Life Cycle Emissions and Energy Consumption for Environmentally Adapted Metalworking to significantly influence the environmental burdens of all fluids, energy consumption was relatively constant and consumed without long-distance transportation. MWF Production Each MWF is composed of lubricant oil

Clarens, Andres

404

Wave Activity Diagnostics Applied to Baroclinic Wave Life Cycles  

Science Conference Proceedings (OSTI)

Wave activity diagnostics are calculated for four different baroclinic wave life cycles, including the LC1 and LC2 cases studied by Thorncroft, Hoskins, and McIntyre. The wave activity is a measure of the disturbance relative to some zonally ...

Gudrun Magnusdottir; Peter H. Haynes

1996-08-01T23:59:59.000Z

405

Lanthanide Al-Ni base Ericsson cycle magnetic refrigerants  

DOE Patents (OSTI)

A magnetic refrigerant for a magnetic refrigerator using the Ericsson thermodynamic cycle comprises DyAlNi and (Gd{sub 0.54}Er{sub 0.46})AlNi alloys having a relatively constant {Delta}Tmc over a wide temperature range. 16 figs.

Gschneidner, K.A. Jr.; Takeya, Hiroyuki

1995-10-31T23:59:59.000Z

406

Lanthanide Al-Ni base Ericsson cycle magnetic refrigerants  

DOE Patents (OSTI)

A magnetic refrigerant for a magnetic refrigerator using the Ericsson thermodynamic cycle comprises DyAlNi and (Gd.sub.0.54 Er.sub.0.46)AlNi alloys having a relatively constant .DELTA.Tmc over a wide temperature range.

Gschneidner, Jr., Karl A. (Ames, IA); Takeya, Hiroyuki (Ibaraki, JP)

1995-10-31T23:59:59.000Z

407

Definition: Rankine cycle | Open Energy Information  

Open Energy Info (EERE)

Rankine cycle Rankine cycle Jump to: navigation, search Dictionary.png Rankine cycle Sometimes referred to as the steam cycle. Fuel is used to heat a liquid to produce a high pressure gas that expands and produces work, such as turning a turbine; when the turbine is connected to a generator, it produces electricity. Usually water is the liquid used in the Rankine cycle (to produce steam), but other liquids can also be used. The exhaust vapor expelled from the turbine condenses and the liquid is pumped back to the boiler to repeat the cycle.[1][2] View on Wikipedia Wikipedia Definition The Rankine cycle is a mathematical model that is used to predict the performance of steam engines. The Rankine cycle is an idealised thermodynamic cycle of a heat engine that converts heat into mechanical

408

One Possible Reason for Double-Peaked Maxima in Solar Cycles: Is a Second Maximum of Solar Cycle 24 Coming?  

E-Print Network (OSTI)

We investigate solar activity by focusing on double maxima in solar cycles and try to estimate the shape of the current solar cycle (Cycle 24) during its maximum. We analyzed data for Solar Cycle 24 by using Learmonth Solar Observatory sunspot group data since 2008. All sunspot groups (SGs) recorded during this time interval were separated into two groups: The first group includes small SGs [A, B, C, H, classes by the Zurich classification], and the second group consists of large SGs [D, E, and F]. We then calculated small and large sunspot group numbers, their sunspot numbers [SSN] and Zurich numbers [Rz] from their daily mean numbers as observed on the solar disk during a given month. We found that the temporal variations for these three different separations behave similarly. We also analyzed the general shape of solar cycles from Cycle 1 to 23 by using monthly International Sunspot Number [ISSN] data and found that the durations of maxima were about 2.9 years. Finally, we used ascending time and SSN relat...

Kilcik, Ali

2013-01-01T23:59:59.000Z

409

Putting policy in drive : coordinating measures to reduce fuel use and greenhouse gas emissions from U.S. light-duty vehicles  

E-Print Network (OSTI)

The challenges of energy security and climate change have prompted efforts to reduce fuel use and greenhouse gas emissions in light-duty vehicles within the United States. Failures in the market for lower rates of fuel ...

Evans, Christopher W. (Christopher William)

2008-01-01T23:59:59.000Z

410

Evaluation and Optimization of a Supercritical Carbon Dioxide Power Conversion Cycle for Nuclear Applications  

Science Conference Proceedings (OSTI)

There have been a number of studies involving the use of gases operating in the supercritical mode for power production and process heat applications. Supercritical carbon dioxide (CO2) is particularly attractive because it is capable of achieving relatively high power conversion cycle efficiencies in the temperature range between 550°C and 750°C. Therefore, it has the potential for use with any type of high-temperature nuclear reactor concept, assuming reactor core outlet temperatures of at least 550°C. The particular power cycle investigated in this paper is a supercritical CO2 Recompression Brayton Cycle. The CO2 Recompression Brayton Cycle can be used as either a direct or indirect power conversion cycle, depending on the reactor type and reactor outlet temperature. The advantage of this cycle when compared to the helium Brayton Cycle is the lower required operating temperature; 550°C versus 850°C. However, the supercritical CO2 Recompression Brayton Cycle requires an operating pressure in the range of 20 MPa, which is considerably higher than the required helium Brayton cycle operating pressure of 8 MPa. This paper presents results of analyses performed using the UniSim process analyses software to evaluate the performance of the supercritical CO2 Brayton Recompression Cycle for different reactor outlet temperatures. The UniSim model assumed a 600 MWt reactor power source, which provides heat to the power cycle at a maximum temperature of between 550°C and 750°C. The UniSim model used realistic component parameters and operating conditions to model the complete power conversion system. CO2 properties were evaluated, and the operating range for the cycle was adjusted to take advantage of the rapidly changing conditions near the critical point. The UniSim model was then optimized to maximize the power cycle thermal efficiency at the different maximum power cycle operating temperatures. The results of the analyses showed that power cycle thermal efficiencies in the range of 40 to 50% can be achieved.

Edwin A. Harvego; Michael G. McKellar

2011-05-01T23:59:59.000Z

411

Future Potential of Hybrid and Diesel Powertrains in the U.S. Light-duty Vehicle Market  

Science Conference Proceedings (OSTI)

Diesel and hybrid technologies each have the potential to increase light-duty vehicle fuel economy by a third or more without loss of performance, yet these technologies have typically been excluded from technical assessments of fuel economy potential on the grounds that hybrids are too expensive and diesels cannot meet Tier 2 emissions standards. Recently, hybrid costs have come down and the few hybrid makes available are selling well. Diesels have made great strides in reducing particulate and nitrogen oxide emissions, and are likely though not certain to meet future standards. In light of these developments, this study takes a detailed look at the market potential of these two powertrain technologies and their possible impacts on light-duty vehicle fuel economy. A nested multinomial logit model of vehicle choice was calibrated to 2002 model year sales of 930 makes, models and engine-transmission configurations. Based on an assessment of the status and outlook for the two technologies, market shares were predicted for 2008, 2012 and beyond, assuming no additional increase in fuel economy standards or other new policy initiatives. Current tax incentives for hybrids are assumed to be phased out by 2008. Given announced and likely introductions by 2008, hybrids could capture 4-7% and diesels 2-4% of the light-duty market. Based on our best guesses for further introductions, these shares could increase to 10-15% for hybrids and 4-7% for diesels by 2012. The resulting impacts on fleet average fuel economy would be about +2% in 2008 and +4% in 2012. If diesels and hybrids were widely available across vehicle classes, makes, and models, they could capture 40% or more of the light-duty vehicle market.

Greene, D.L.

2004-08-23T23:59:59.000Z

412

Improving the efficiency of binary cycles  

SciTech Connect

The performance of binary geothermal power plants can be improved through the proper choice of a working fluid, and optimization of component designs and operating conditions. This paper summarizes the investigations at the Idaho National Engineering Laboratory (INEL) which are examining binary cycle performance improvements for moderate temperature (350 to 400 F) resources. These investigations examine performance improvements resulting from the supercritical vaporization and countercurrent integral condensation of mixed hydrocarbon working fluids, as well as the modification of the turbine inlet state points to achieve supersaturated turbine vapor expansions. For resources, with the brine outlet temperature restricted, the use of turbine exhaust recuperators is examined. The reference plant used to determine improvements in plant performance in these studies operates at conditions similar to the 45 MW Heber binary plant. The brine effectiveness (watt-hours per pound of brine) is used as an indicator for improvements in performance. The performance of the binary cycle can be improved by 25 to 30% relative to the reference plant through the selection of the optimum working fluids and operating conditions, achieving countercurrent integral condensation, and allowing supersaturated vapor expansions in the turbine. 9 refs., 5 figs.

Mines, G.L.; Bliem, C.J.

1988-01-01T23:59:59.000Z

413

Continuous chain bit with downhole cycling capability  

DOE Patents (OSTI)

A continuous chain bit for hard rock drilling is disclosed which is capable of downhole cycling. A drill head assembly moves axially relative to a support body while the chain on the head assembly is held in position so that the bodily movement of the chain cycles the chain to present new composite links for drilling. A pair of spring fingers on opposite sides of the chain hold the chain against movement. The chain is held in tension by a spring-biased tensioning bar. A head at the working end of the chain supports the working links. The chain is centered by a reversing pawl and piston actuated by the pressure of the drilling mud. Detent pins lock the head assembly with respect to the support body and are also operated by the drilling mud pressure. A restricted nozzle with a divergent outlet sprays drilling mud into the cavity to remove debris. Indication of the centered position of the chain is provided by noting a low pressure reading indicating proper alignment of drilling mud slots on the links with the corresponding feed branches.

Ritter, D.F.; St. Clair, J.A.; Togami, H.K.

1981-03-17T23:59:59.000Z

414

Continuous chain bit with downhole cycling capability  

DOE Patents (OSTI)

A continuous chain bit for hard rock drilling is capable of downhole cycling. A drill head assembly moves axially relative to a support body while the chain on the head assembly is held in position so that the bodily movement of the chain cycles the chain to present new composite links for drilling. A pair of spring fingers on opposite sides of the chain hold the chain against movement. The chain is held in tension by a spring-biased tensioning bar. A head at the working end of the chain supports the working links. The chain is centered by a reversing pawl and piston actuated by the pressure of the drilling mud. Detent pins lock the head assembly with respect to the support body and are also operated by the drilling mud pressure. A restricted nozzle with a divergent outlet sprays drilling mud into the cavity to remove debris. Indication of the centered position of the chain is provided by noting a low pressure reading indicating proper alignment of drilling mud slots on the links with the corresponding feed branches.

Ritter, Don F. (Albuquerque, NM); St. Clair, Jack A. (Albuquerque, NM); Togami, Henry K. (Albuquerque, NM)

1983-01-01T23:59:59.000Z

415

Uncertainty quantification of limit-cycle oscillations  

SciTech Connect

Different computational methodologies have been developed to quantify the uncertain response of a relatively simple aeroelastic system in limit-cycle oscillation, subject to parametric variability. The aeroelastic system is that of a rigid airfoil, supported by pitch and plunge structural coupling, with nonlinearities in the component in pitch. The nonlinearities are adjusted to permit the formation of a either a subcritical or supercritical branch of limit-cycle oscillations. Uncertainties are specified in the cubic coefficient of the torsional spring and in the initial pitch angle of the airfoil. Stochastic projections of the time-domain and cyclic equations governing system response are carried out, leading to both intrusive and non-intrusive computational formulations. Non-intrusive formulations are examined using stochastic projections derived from Wiener expansions involving Haar wavelet and B-spline bases, while Wiener-Hermite expansions of the cyclic equations are employed intrusively and non-intrusively. Application of the B-spline stochastic projection is extended to the treatment of aerodynamic nonlinearities, as modeled through the discrete Euler equations. The methodologies are compared in terms of computational cost, convergence properties, ease of implementation, and potential for application to complex aeroelastic systems.

Beran, Philip S. [Multidisciplinary Technologies Center, Air Vehicles Directorate, AFRL/VASD, Building 146, 2210 Eighth Street, WPAFB, OH 45433 (United States)]. E-mail: philip.beran@wpafb.af.mil; Pettit, Chris L. [United States Naval Academy, 590 Holloway Rd., MS 11-B, Annapolis, MD 21402 (United States)]. E-mail: pettitcl@usna.edu; Millman, Daniel R. [USAF TPS/EDT, 220 South Wolfe Ave, Bldg. 1220, Rm. 131, Edwards AFB, CA 93524-6485 (United States)]. E-mail: daniel.millman@edwards.af.mil

2006-09-01T23:59:59.000Z

416

Testing of a Stirling cycle cooler  

Science Conference Proceedings (OSTI)

Stirling cycle coolers have long been used as low temperature refrigeration devices. They are relatively compact, reliable, commercially available, and use helium as the working fluid. The Stirling cycle, in principle, can be used for household refrigeration and heat pumping applications as well. Currently, these applications are almost entirely provided by the vapor compression technology using chlorofluorocarbons (CFCs) as working fluids. It has been known that CFCs cause depletion of the ozone layer that protects the earth against harmful levels of ultraviolet radiation from the sun. A recent report of a ''hole'' in the ozone layer above Antarctica and of possible environmental and health consequences from ozone depletion aroused public attention. The urgent need to reduce the future used of CFCs should instigate investigation of non-CFC alternative technologies. The Stirling cooler technology, which does not use CFCs, could be a viable alternative. A laboratory test of the performance of a Stirling cooler is reported and its implications for household refrigeration are explored. 11 refs., 6 figs., 2 tabs.

Chen, F.C.; Keshock, E.G.; Murphy, R.W.

1988-09-01T23:59:59.000Z

417

Reactivity Controlled Compression Ignition (RCCI) Combustion on a Multi-Cylinder Light-Duty Diesel Engine  

Science Conference Proceedings (OSTI)

Reactivity controlled compression ignition is a low-temperature combustion technique that has been shown, both in computational fluid dynamics modeling and single-cylinder experiments, to obtain diesel-like efficiency or better with ultra-low nitrogen oxide and soot emissions, while operating primarily on gasoline-like fuels. This paper investigates reactivity controlled compression ignition operation on a four-cylinder light-duty diesel engine with production-viable hardware using conventional gasoline and diesel fuel. Experimental results are presented over a wide speed and load range using a systematic approach for achieving successful steady-state reactivity controlled compression ignition combustion. The results demonstrated diesel-like efficiency or better over the operating range explored with low engine-out nitrogen oxide and soot emissions. A peak brake thermal efficiency of 39.0% was demonstrated for 2600 r/min and 6.9 bar brake mean effective pressure with nitrogen oxide emissions reduced by an order of magnitude compared to conventional diesel combustion operation. Reactivity controlled compression ignition emissions and efficiency results are compared to conventional diesel combustion operation on the same engine.

Curran, Scott [ORNL; Hanson, Reed M [ORNL; Wagner, Robert M [ORNL

2012-01-01T23:59:59.000Z

418

Electric Technologies for Light-duty Vehicles in the United States Abstract  

E-Print Network (OSTI)

This paper is concerned with the present status and future projections for emerging technologies that can be utilized in light-duty vehicles in the next five to ten years to significantly reduce their CO2 emissions. The emerging technologies considered are modern clean diesel engines and hybrid-electric powertrains using batteries and/or ultracapacitors for energy storage. Throughout the study, six classes of vehicles –compact passenger cars to large SUVs-were considered. For each vehicle class, computer simulations (Advisor 2002) and cost analyses were performed for conventional ICE and mild and full parallel hybrids using port-fuel injected and lean burn gasoline engines and direct-injection turbo-charged diesel engines to determine the fuel economy and differential costs for the various vehicle designs using the conventional gasoline PFI engine vehicle as the baseline. CO2 emissions (gmCO2/mi) for each driveline and vehicle case were calculated from the fuel economy values. On a percentage or ratio basis, the analyses indicated that the fuel economy gains, CO2 emissions reductions, and cost/price increases due to the use of the advanced engines and hybrid-electric drivelines were essentially independent of vehicle class. This means that a regulation specifying the same fractional

United States; Andrew Burke; Ethan Abeles; Andrew Burke; Ethan Abeles

2004-01-01T23:59:59.000Z

419

Community Relations  

NLE Websites -- All DOE Office Websites (Extended Search)

Students at EnergySmart Schools and people at Rebuilding Together events Community Relations EETD and Lawrence Berkeley National Laboratory's community relations mission and...

420

New Regenerative Cycle for Vapor Compression Refrigeration  

SciTech Connect

The main objective of this project is to confirm on a well-instrumented prototype the theoretically derived claims of higher efficiency and coefficient of performance for geothermal heat pumps based on a new regenerative thermodynamic cycle as comparing to existing technology. In order to demonstrate the improved performance of the prototype, it will be compared to published parameters of commercially available geothermal heat pumps manufactured by US and foreign companies. Other objectives are to optimize the design parameters and to determine the economic viability of the new technology. Background (as stated in the proposal): The proposed technology closely relates to EERE mission by improving energy efficiency, bringing clean, reliable and affordable heating and cooling to the residential and commercial buildings and reducing greenhouse gases emission. It can provide the same amount of heating and cooling with considerably less use of electrical energy and consequently has a potential of reducing our nations dependence on foreign oil. The theoretical basis for the proposed thermodynamic cycle was previously developed and was originally called a dynamic equilibrium method. This theory considers the dynamic equations of state of the working fluid and proposes the methods for modification of T-S trajectories of adiabatic transformation by changing dynamic properties of gas, such as flow rate, speed and acceleration. The substance of this proposal is a thermodynamic cycle characterized by the regenerative use of the potential energy of two-phase flow expansion, which in traditional systems is lost in expansion valves. The essential new features of the process are: (1) The application of two-step throttling of the working fluid and two-step compression of its vapor phase. (2) Use of a compressor as the initial step compression and a jet device as a second step, where throttling and compression are combined. (3) Controlled ratio of a working fluid at the first and second step of compression. In the proposed system, the compressor compresses the vapor only to 50-60% of the final pressure, while the additional compression is provided by a jet device using internal potential energy of the working fluid flow. Therefore, the amount of mechanical energy required by a compressor is significantly reduced, resulting in the increase of efficiency (either COP or EER). The novelty of the cycle is in the equipment and in the way the multi-staging is accomplished. The anticipated result will be a new refrigeration system that requires less energy to accomplish a cooling task. The application of this technology will be for more efficient designs of: (1) Industrial chillers, (2) Refrigeration plants, (3) Heat pumps, (4) Gas Liquefaction plants, (5) Cryogenic systems.

Mark J. Bergander

2005-08-29T23:59:59.000Z

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

DEVELOPMENT OF UREA-SCR FOR HEAVY-DUTY TRUCKS DEMONSTRATION UPDATE  

DOE Green Energy (OSTI)

This study included engine cell and vehicle tests. The engine cell tests are aimed at determining NOX reduction using the US transient and OICA emissions test cycles. These cycles will be included in future US HD emissions standards. The vehicle tests will show urea-SCR system performance during real-world operation. These tests will prove that the technology can be successfully implemented and demonstrated over-the-road. The program objectives are to: (a) apply urea-SCR to a US HD diesel engine; (b) determine engine cell emissions reduction during US-transient and OICA cycles; (c) apply urea-SCR to a US HD diesel truck; and (d) determine NOX reduction and urea consumption during over-the-road operation.

Miller, William

2000-08-20T23:59:59.000Z

422

Toward single-cycle optical pulses  

E-Print Network (OSTI)

Single-cycle optical pulses, the never-before-achieved regime, have a great potential for attosecond science and phase-sensitive nonlinear optics. To achieve single-cycle optical pulses by active synchronization, three ...

Kim, Jung-Won, 1976-

2004-01-01T23:59:59.000Z

423

Global Changes of the Water Cycle Intensity  

Science Conference Proceedings (OSTI)

In this study, numerical simulations of the twentieth-century climate are evaluated, focusing on the changes in the intensity of the global water cycle. A new model diagnostic of atmospheric water vapor cycling rate is developed and employed that ...

Michael G. Bosilovich; Siegfried D. Schubert; Gregory K. Walker

2005-05-01T23:59:59.000Z

424

Rethinking the light water reactor fuel cycle  

E-Print Network (OSTI)

The once through nuclear fuel cycle adopted by the majority of countries with operating commercial power reactors imposes a number of concerns. The radioactive waste created in the once through nuclear fuel cycle has to ...

Shwageraus, Evgeni, 1973-

2004-01-01T23:59:59.000Z

425

Annual Cycle of Surface Longwave Radiation  

Science Conference Proceedings (OSTI)

The annual cycles of upward and downward longwave fluxes at the earth’s surface are investigated by use of the NASA Global Energy and Water Cycle Experiment (GEWEX) Surface Radiation Budget Dataset. Principal component analysis is used to quantify ...

Pamela E. Mlynczak; G. Louis Smith; Anne C. Wilber; Paul W. Stackhouse

2011-06-01T23:59:59.000Z

426

Profit cycle dynamics by Kawika Pierson.  

E-Print Network (OSTI)

My thesis consists of three essays investigating the existence, causes, and mitigation of profit cycles at an industry level. The first essay examines profit cycles by proposing that the industry-specific features of how ...

Pierson, Kawika (Kawika Paul)

2011-01-01T23:59:59.000Z

427

WEB RESOURCES: The Nuclear Fuel Cycle - TMS  

Science Conference Proceedings (OSTI)

Feb 12, 2007 ... A compilation of links to websites describing the nuclear fuel cycle. A link to a short overview of the entire cycle is included as well as a ...

428

Application of the thorium fuel cycle  

SciTech Connect

An economic analysis of the application of the thorium fuel cycle to thermal reactors is presented. (JWR)

Kasten, P.R.; Tobias, M.L.

1975-01-01T23:59:59.000Z

429

Combined Cycle Performance Tracking Guideline: Interim Report  

Science Conference Proceedings (OSTI)

The Electric Power Research Institute’s (EPRI’s) Combined Cycle Performance Monitoring and Recovery Guideline (EPRI report 1023971) was developed in 2012 to provide plant owners and operators with a comprehensive guideline for identifying and quantifying combined-cycle performance losses and appropriate recovery activities for a generic F-Class combined-cycle power plant (CCPP). This report, Combined-Cycle Performance Tracking Guideline, has been developed as an adjunct ...

2013-12-23T23:59:59.000Z

430

Political Cycles and the Stock Market  

E-Print Network (OSTI)

forecast the stock market as controls for business cycle ?uctuations. After controlling for the dividend-price

Santa-Clara, Pedro; Valkanov, Rossen

2000-01-01T23:59:59.000Z

431

Development Plan for the Fuel Cycle Simulator  

Science Conference Proceedings (OSTI)

The Fuel Cycle Simulator (FCS) project was initiated late in FY-10 as the activity to develop a next generation fuel cycle dynamic analysis tool for achieving the Systems Analysis Campaign 'Grand Challenge.' This challenge, as documented in the Campaign Implementation Plan, is to: 'Develop a fuel cycle simulator as part of a suite of tools to support decision-making, communication, and education, that synthesizes and visually explains the multiple attributes of potential fuel cycles.'

Brent Dixon

2011-09-01T23:59:59.000Z

432

Search for relationship between duration of the extended solar cycles and amplitude of sunspot cycle  

E-Print Network (OSTI)

Duration of the extended solar cycles is taken into the consideration. The beginning of cycles is counted from the moment of polarity reversal of large-scale magnetic field in high latitudes, occurring in the sunspot cycle n till the minimum of the cycle n+2. The connection between cycle duration and its amplitude is established. Duration of the "latent" period of evolution of extended cycle between reversals and a minimum of the current sunspot cycle is entered. It is shown, that the latent period of cycles evolution is connected with the next sunspot cycle amplitude and can be used for the prognosis of a level and time of a sunspot maximum. The 24-th activity cycle prognosis is done. Long-term behavior of extended cycle's lengths is considered.

Tlatov, A G

2007-01-01T23:59:59.000Z

433

Search for relationship between duration of the extended solar cycles and amplitude of sunspot cycle  

E-Print Network (OSTI)

Duration of the extended solar cycles is taken into the consideration. The beginning of cycles is counted from the moment of polarity reversal of large-scale magnetic field in high latitudes, occurring in the sunspot cycle n till the minimum of the cycle n+2. The connection between cycle duration and its amplitude is established. Duration of the "latent" period of evolution of extended cycle between reversals and a minimum of the current sunspot cycle is entered. It is shown, that the latent period of cycles evolution is connected with the next sunspot cycle amplitude and can be used for the prognosis of a level and time of a sunspot maximum. The 24-th activity cycle prognosis is done. Long-term behavior of extended cycle's lengths is considered.

A. G. Tlatov

2007-03-27T23:59:59.000Z

434

Evaluation of the Daylight Cycle of Model-Predicted Cloud Amount and Condensed Water Path over Europe with Observations from MSG SEVIRI  

Science Conference Proceedings (OSTI)

The evaluation of the diurnal cycle of cloud amount (CA) and cloud condensed water path (CWP) as predicted by climate models receives relatively little attention, mostly because of the lack of observational data capturing the diurnal cycle of ...

R. A. Roebeling; E. van Meijgaard

2009-04-01T23:59:59.000Z

435

Comparison of Cycling Performance of Lithium Ion Cell Anode Graphites  

NLE Websites -- All DOE Office Websites (Extended Search)

Comparison of Cycling Performance of Lithium Ion Cell Anode Graphites Comparison of Cycling Performance of Lithium Ion Cell Anode Graphites Title Comparison of Cycling Performance of Lithium Ion Cell Anode Graphites Publication Type Journal Article Year of Publication 2012 Authors Ridgway, Paul L., Honghe Zheng, A. F. Bello, Xiangyun Song, Shidi Xun, Jin Chong, and Vincent S. Battaglia Journal Journal of The Electrochemical Society Volume 159 Issue 5 Pagination A520 Date Published 2012 ISSN 00134651 Abstract Battery grade graphite products from major suppliers to the battery industry were evaluated in 2325 coin cells with lithium counter electrodes. First and ongoing cycle efficiency, total and reversible capacity, cycle life and discharge rate performance were measured to compare these anode materials. We then ranked the graphites using a formula which incorporates these performance measures to estimate the cost of the overall system, relative to the cost of a system using MCMB. This analysis indicates that replacing MCMB with CCP-G8 (Conoco Phillips) would add little to no cost, whereas each of the other graphites would lead to a more costly system. Therefore we chose CCP-G8 as the new baseline graphite for the BATT program.

436

MHD Integrated Topping Cycle Project  

DOE Green Energy (OSTI)

This eighteenth quarterly technical progress report of the MHD Integrated Topping cycle Project presents the accomplishments during the period November 1, 1991 to January 31, 1992. The precombustor is fully assembled. Manufacturing of all slagging stage components has been completed. All cooling panels were welded in place and the panel/shell gap was filled with RTV. Final combustor assembly is in progress. The low pressure cooling subsystem (LPCS) was delivered to the CDIF. Second stage brazing issues were resolved. The construction of the two anode power cabinets was completed.

Not Available

1992-07-01T23:59:59.000Z

437

Solid Oxide Fuel Cell Development for Auxiliary Power in Heavy Duty Vehicle Applications  

Science Conference Proceedings (OSTI)

Changing economic and environmental needs of the trucking industry is driving the use of auxiliary power unit (APU) technology for over the road haul trucks. The trucking industry in the United States remains the key to the economy of the nation and one of the major changes affecting the trucking industry is the reduction of engine idling. Delphi Automotive Systems, LLC (Delphi) teamed with heavy-duty truck Original Equipment Manufacturers (OEMs) PACCAR Incorporated (PACCAR), and Volvo Trucks North America (VTNA) to define system level requirements and develop an SOFC based APU. The project defines system level requirements, and subsequently designs and implements an optimized system architecture using an SOFC APU to demonstrate and validate that the APU will meet system level goals. The primary focus is on APUs in the range of 3-5 kW for truck idling reduction. Fuels utilized were derived from low-sulfur diesel fuel. Key areas of study and development included sulfur remediation with reformer operation; stack sensitivity testing; testing of catalyst carbon plugging and combustion start plugging; system pre-combustion; and overall system and electrical integration. This development, once fully implemented and commercialized, has the potential to significantly reduce the fuel idling Class 7/8 trucks consume. In addition, the significant amounts of NOx, CO2 and PM that are produced under these engine idling conditions will be virtually eliminated, inclusive of the noise pollution. The environmental impact will be significant with the added benefit of fuel savings and payback for the vehicle operators / owners.

Daniel T. Hennessy

2010-06-15T23:59:59.000Z

438

Plasma Catalysis for NOx Reduction from Light-Duty Diesel Vehicles  

SciTech Connect

The control of NOx (NO and NO2) emissions from so-called ‘lean-burn’ vehicle engines remains a challenge. In this program, we have been developing a novel plasma/catalyst technology for the remediation of NOx under lean (excess oxygen) conditions, specifically for compression ignition direct injection (CIDI) diesel engines that have significant fuel economy benefits over conventional stoichiometric gasoline engines. Program efforts included: (1) improving the catalyst and plasma reactor efficiencies for NOx reduction; (2) studies to reveal important details of the reaction mechanism(s) that can then guide our catalyst and reactor development efforts; (3) evaluating the performance of prototype systems on real engine exhaust; and (4) studies of the effects of the plasma on particulate matter (PM) in real diesel engine exhaust. Figure 1 is a conceptual schematic of a plasma/catalyst device, which also shows our current best understanding of the role of the various components of the overall device for reducing NOx from the exhaust of a CIDI engine. When this program was initiated, it was not at all clear what the plasma was doing and, as such, what class of catalyst materials might be expected to produce good results. With the understanding of the role of the plasma (as depicted in Figure 1) obtained in this program, faujasite zeolite-based catalysts were developed and shown to produce high activity for NOx reduction of plasma-treated exhaust in a temperature range expected for light-duty diesel engines. These materials are the subject of a pending patent application, and were recognized with a prestigious R&D100 Award in 2002. In addition, PNNL staff were awarded a Federal Laboratory Consortium (FLC) Award in 2003 “For Excellence in Technology Transfer”. The program also received the DOE’s 2001 CIDI Combustion and Emission Control Program Special Recognition Award and 2004 Advanced Combustion Engine R&D Special Recognition Award.

Barlow, Stephan E.; Kwak, Ja Hun; Peden, Charles HF; Szanyi, Janos; Tonkyn, Russell G.; Howden, Ken; Hoard, John W.; Cho, Byong; Schmieg, Steven J.; Brooks, David J.; Nunn, Steven; Davis, Patrick

2004-12-31T23:59:59.000Z

439

Understanding the petrochemical cycle: Part 1  

Science Conference Proceedings (OSTI)

Fitness in the hydrocarbon processing industry (HPI) arena involves understanding and coping with business cycles: supply and demand. This becomes increasingly more important as the industry globalizes and matures. Competitive-edge thinking needs to look hard at the forces that influence business cycles. Recognition of potential pitfalls is very important when considering: future capacity expansion, mergers and acquisitions, market departure, plant closure, potential product substitution, etc. Understanding pricing mechanisms and the workings of hockey-stick profitability profiles help HPI operators endure cycle downturns and prepare plants to maximize profits for the next upswing. The paper discusses characteristic trends, cycles in the hydrocarbon processing industry, current conditions, and mitigating cycle effects.

Sedriks, W. (SRI International, Menlo Park, CA (United States))

1994-03-01T23:59:59.000Z

440

Current Forecast for Sunspot Cycle 24 Parameters  

Science Conference Proceedings (OSTI)

Our prediction for the development of sunspot cycle 23 activity came true; one of the very few to have attained this status. We use the 3?cycle quasi?periodicity observed in the planetary index Ap. We improve our method by including data for 150 years and draw inferences as to what to expect for the development phase of cycle 24. Our forecast for the smoothed sunspot number at cycle 24 peak 78±5 in June 2013; the possibility that next three cycles may be progressively less active cannot be ruled out; the trend may possibly continue for the rest of the 21st century.

H. S. Ahluwalia; R. C. Ygbuhay

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "duty cycles related" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Conceptual design of an advanced absorption cycle: the double-effect regenerative absorption refrigeration cycle  

DOE Green Energy (OSTI)

An advanced absorption refrigeration cycle was proposed as a heat-activated refrigeration system. Referred to as the double-effect regenerative absorption cycle of cycle 2R, it improves the performance of the conventional single-effect absorption cycle at high heat source temperatures. The performance of cycle 2R continually improves as input temperatures rise, in contrast to the conventional double-effect absorption cycle that has a sharp cut-off temperature below which it ceases to operate. Cycle 2R operates with two subcycles, the first-effect and the second-effect subcycles.

Dao, K.

1978-09-01T23:59:59.000Z

442

MHD Integrated Topping Cycle Project  

DOE Green Energy (OSTI)

The overall objective of the project is to design and construct prototypical hardware for an integrated MHD topping cycle, and conduct long duration proof-of-concept tests of integrated system at the US DOE Component Development and Integration Facility in Butte, Montana. The results of the long duration tests will augment the existing engineering design data base on MHD power train reliability, availability, maintainability, and performance, and will serve as a basis for scaling up the topping cycle design to the next level of development, an early commercial scale power plant retrofit. The components of the MHD power train to be designed, fabricated, and tested include: A slagging coal combustor with a rated capacity of 50 MW thermal input, capable of operation with an Eastern (Illinois {number sign}6) or Western (Montana Rosebud) coal, a segmented supersonic nozzle, a supersonic MHD channel capable of generating at least 1.5 MW of electrical power, a segmented supersonic diffuser section to interface the channel with existing facility quench and exhaust systems, a complete set of current control circuits for local diagonal current control along the channel, and a set of current consolidation circuits to interface the channel with the existing facility inverter.

Not Available

1992-01-01T23:59:59.000Z

443

MHD Integrated Topping Cycle Project  

DOE Green Energy (OSTI)

The Magnetohydrodynamics (MHD) Integrated Topping Cycle (ITC) Project represents the culmination of the proof-of-concept (POC) development stage in the US Department of Energy (DOE) program to advance MHD technology to early commercial development stage utility power applications. The project is a joint effort, combining the skills of three topping cycle component developers: TRW, Avco/TDS, and Westinghouse. TRW, the prime contractor and system integrator, is responsible for the 50 thermal megawatt (50 MW{sub t}) slagging coal combustion subsystem. Avco/TDS is responsible for the MHD channel subsystem (nozzle, channel, diffuser, and power conditioning circuits), and Westinghouse is responsible for the current consolidation subsystem. The ITC Project will advance the state-of-the-art in MHD power systems with the design, construction, and integrated testing of 50 MW{sub t} power train components which are prototypical of the equipment that will be used in an early commercial scale MHD utility retrofit. Long duration testing of the integrated power train at the Component Development and Integration Facility (CDIF) in Butte, Montana will be performed, so that by the early 1990's, an engineering data base on the reliability, availability, maintainability and performance of the system will be available to allow scaleup of the prototypical designs to the next development level. This Sixteenth Quarterly Technical Progress Report covers the period May 1, 1991 to July 31, 1991.

Not Available

1992-03-01T23:59:59.000Z

444

Fuel Cycle CrossCut Group  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

CrossCut Group CrossCut Group 1 NERAC Briefing: Assessment of Dose of Closed vs Open Gen-IV Fuel Cycles David Wade NERAC Meeting September 30, 2002 Fuel Cycle CrossCut Group 2 Public Dose and Worker Dose Comparison of Open vs Closed Fuel Cycles * Gen-IV fuel cycle options are meant to address all stated Gen-IV Goals - Dose to workers and to the public is one of the numerous elements to be evaluated by Gen-IV R&D - The Fuel Cycle Crosscut Group was assigned to take an early look at dose implication tradeoffs of open and closed fuel cycles * FCCG Interpretation of Assignment: - Collect already-existing evaluations and prepare a briefing on what is currently known Fuel Cycle CrossCut Group 3 Approach * Look at Actual Historical Doses Based on Operational Experience - Data compiled by the United Nations Scientific Committee on the Effects of Atomic

445

Definition: Brayton cycle | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Definition Edit with form History Facebook icon Twitter icon » Definition: Brayton cycle Jump to: navigation, search Dictionary.png Brayton cycle A thermodynamic cycle using constant pressure, heat addition and rejection. Fuel and a compressor are used to heat and increase the pressure of a gas; the gas expands and spins the blades of a turbine, which, when connected to a generator, generates electricity.[1][2] View on Wikipedia Wikipedia Definition The Brayton cycle is a thermodynamic cycle that describes the workings of a constant pressure heat engine. Gas turbine engines and airbreathing jet engines use the Brayton Cycle. Although the Brayton cycle

446

VISION: Verifiable Fuel Cycle Simulation Model  

Science Conference Proceedings (OSTI)

The nuclear fuel cycle is a very complex system that includes considerable dynamic complexity as well as detail complexity. In the nuclear power realm, there are experts and considerable research and development in nuclear fuel development, separations technology, reactor physics and waste management. What is lacking is an overall understanding of the entire nuclear fuel cycle and how the deployment of new fuel cycle technologies affects the overall performance of the fuel cycle. The Advanced Fuel Cycle Initiative’s systems analysis group is developing a dynamic simulation model, VISION, to capture the relationships, timing and delays in and among the fuel cycle components to help develop an understanding of how the overall fuel cycle works and can transition as technologies are changed. This paper is an overview of the philosophy and development strategy behind VISION. The paper includes some descriptions of the model and some examples of how to use VISION.

Jacob J. Jacobson; Abdellatif M. Yacout; Gretchen E. Matthern; Steven J. Piet; David E. Shropshire

2009-04-01T23:59:59.000Z

447

Fuel Cycle Research and Development Program  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Development Program Presentation to Office of Environmental Management Tank Waste Corporate Board James C. Bresee, ScD, JD Advisory Board Member Office of Nuclear Energy July 29, 2009 July 29, 2009 Fuel Cycle Research and Development DM 195665 2 Outline Fuel Cycle R&D Mission Changes from the Former Advanced Fuel Cycle Initiative The Science-Based Approach Key Collaborators Budget History Program Elements Summary July 29, 2009 Fuel Cycle Research and Development DM 195665 3 Fuel Cycle R&D Mission The mission of Fuel Cycle Research and Development is to develop options to current fuel cycle management strategy to enable the safe, secure, economic, and sustainable expansion of nuclear energy while reducing proliferation risks by conducting

448

Economic Analyiss of "Symbiotic" Light Water Reactor/Fast Burner Reactor Fuel Cycles Proposed as Part of the U.S. Advanced Fuel Cycle Initiative (AFCI)  

Science Conference Proceedings (OSTI)

A spreadsheet-based 'static equilibrium' economic analysis was performed for three nuclear fuel cycle scenarios, each designed for 100 GWe-years of electrical generation annually: (1) a 'once-through' fuel cycle based on 100% LWRs fueled by standard UO2 fuel assemblies with all used fuel destined for geologic repository emplacement, (2) a 'single-tier recycle' scenario involving multiple fast burner reactors (37% of generation) accepting actinides (Pu,Np,Am,Cm) from the reprocessing of used fuel from the uranium-fueled LWR fleet (63% of generation), and (3) a 'two-tier' 'thermal+fast' recycle scenario where co-extracted U,Pu from the reprocessing of used fuel from the uranium-fueled part of the LWR fleet (66% of generation) is recycled once as full-core LWR MOX fuel (8% of generation), with the LWR MOX used fuel being reprocessed and all actinide products from both UO2 and MOX used fuel reprocessing being introduced into the closed fast burner reactor (26% of generation) fuel cycle. The latter two 'closed' fuel cycles, which involve symbiotic use of both thermal and fast reactors, have the advantages of lower natural uranium requirements per kilowatt-hour generated and less geologic repository space per kilowatt-hour as compared to the 'once-through' cycle. The overall fuel cycle cost in terms of $ per megawatt-hr of generation, however, for the closed cycles is 15% (single tier) to 29% (two-tier) higher than for the once-through cycle, based on 'expected values' from an uncertainty analysis using triangular distributions for the unit costs for each required s