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Note: This page contains sample records for the topic "forced air system" from the National Library of EnergyBeta (NLEBeta).
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1

Forced Air Systems in High Performance Homes  

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

FORCED AIR SYSTEMS IN FORCED AIR SYSTEMS IN HIGH PERFORMANCE HOMES Iain Walker (LBNL) Building America Meeting 2013 What are the issues? 1. Sizing  When is too small too small? 2. Distribution  Can we get good mixing at low flow? 3. Performance  Humidity Control  Part load efficiency  Blowers & thermal losses Sizing  Part-load - not an issue with modern equipment  Careful about predicted loads - a small error becomes a big problem for tightly sized systems  Too Low Capacity = not robust  Extreme vs. design days  Change in occupancy  Party mode  Recovery from setback Sizing  Conventional wisdom - a good envelope = easy to predict and not sensitive to indoor conditions  But..... Heating and cooling become discretionary - large variability depending on occupants

2

Residential Forced Air System Cabinet Leakage and Blower Performance  

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

Residential Forced Air System Cabinet Leakage and Blower Performance Residential Forced Air System Cabinet Leakage and Blower Performance Title Residential Forced Air System Cabinet Leakage and Blower Performance Publication Type Report LBNL Report Number LBNL-3383E Year of Publication 2010 Authors Walker, Iain S., Darryl J. Dickerhoff, and William W. Delp Publisher Lawrence Berkeley National Laboratory City Berkeley Keywords air flow measurement, air leakage, blower power measurement, blowers, energy performance of buildings group, forced air systems, furnaces, indoor environment department, other, public interest energy research (pier) program, residential hvac Abstract This project evaluated the air leakage and electric power consumption of Residential HVAC components, with a particular focus on air leakage of furnace cabinets. Laboratory testing of HVAC components indicated that air leakage can be significant and highly variable from unit to unit - indicating the need for a standard test method and specifying maximum allowable air leakage in California State energy codes. To further this effort, this project provided technical assistance for the development of a national standard for Residential HVAC equipment air leakage. This standard is being developed by ASHRAE and is called "ASHRAE Standard 193P - Method of test for Determining the Air Leakage Rate of HVAC Equipment". The final part of this project evaluated techniques for measurement of furnace blower power consumption. A draft test procedure for power consumption was developed in collaboration with the Canadian General Standards Board: CSA 823 "Performance Standard for air handlers in residential space conditioning systems".

3

Residential Forced Air System Cabinet Leakage and Blower Performance  

SciTech Connect

This project evaluated the air leakage and electric power consumption of Residential HVAC components, with a particular focus on air leakage of furnace cabinets. Laboratory testing of HVAC components indicated that air leakage can be significant and highly variable from unit to unit ? indicating the need for a standard test method and specifying maximum allowable air leakage in California State energy codes. To further this effort, this project provided technical assistance for the development of a national standard for Residential HVAC equipment air leakage. This standard is being developed by ASHRAE and is called"ASHRAE Standard 193P - Method of test for Determining the Air Leakage Rate of HVAC Equipment". The final part of this project evaluated techniques for measurement of furnace blower power consumption. A draft test procedure for power consumption was developed in collaboration with the Canadian General Standards Board: CSA 823"Performance Standard for air handlers in residential space conditioning systems".

Walker, Iain S.; Dickerhoff, Darryl J.; Delp, William W.

2010-03-01T23:59:59.000Z

4

Residential Forced Air System Cabinet Leakage and Blower Performance  

E-Print Network (OSTI)

easyairsealing .suchthattheefficacyofairsealingis determinedbytheinlet that prevents easy air sealing DeltaQ TheDeltaQtest

Walker, Iain S.

2010-01-01T23:59:59.000Z

5

Residential Forced Air System Cabinet Leakage and Blower Performance  

E-Print Network (OSTI)

ResidentialACMManual,Section 3.12.5Duct/AirHandlerResidentialACMManual,Section3.12.5Duct/Air HandlerleakageofairhandlersforthepurposesoftheACM. Based

Walker, Iain S.

2010-01-01T23:59:59.000Z

6

Complexity within the Air Force acquisition system gaining insight from a theory of collapse  

E-Print Network (OSTI)

Joseph Tainter's theory of societal collapse is applied in an examination of the U.S. Air Force's aircraft acquisition system in order to gain insight into the enterprise's lagging performance. Theories of collapse at both ...

Marticello, Daniel Nicholas, Jr

2012-01-01T23:59:59.000Z

7

Residential Forced Air System Cabinet Leakage and Blower Performance  

E-Print Network (OSTI)

CA. CEC(2008b). ResidentialAlternativeCalculationStandardforAirHandlersinResidentialSpaceConditioningofStandardsOptionsforResidentialAirHandlerFans.

Walker, Iain S.

2010-01-01T23:59:59.000Z

8

Register Closing Effects on Forced Air Heating System Performance  

E-Print Network (OSTI)

Air Handler Power - Climate Zone 16 48 hr avg 24 hr avg FarAverage Gas Power - Climate Zone 16 48 hr avg 24 hr avg NearAverage Gas Power - Climate Zone 16 48 hr avg Near Registers

Walker, Iain S.

2003-01-01T23:59:59.000Z

9

Air Force Renewable Energy Programs  

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

1 1 Ken Gray P.E. HQ AFCESA /CENR Air Force Renewable Energy Programs April, 2011 FUPWG "Make Energy a Consideration in All We Do" I n t e g r i t y - S e r v i c e - E x c e l l e n c e THINK GREEN, BUILD GREEN, Topics  Air Force Energy Use  Air Force Facility Energy Center  Current RE Generation  Project Development System  Programmed RE Generation FY11-13  Goal Achievement 2 I n t e g r i t y - S e r v i c e - E x c e l l e n c e THINK GREEN, BUILD GREEN, Air Force 2010 Energy Use The Air Force spent approximately $8.2 billion for energy in 2010; an increase of 22% from 2009 Energy Cost and Consumption Trends Energy Cost Breakdown Aviation 79% Facilities 17% 3 Aviation 84% Facilities 12% Vehicles & Equipment

10

The Impact of Forced Air System Blowers on Furnace Performance and Utility  

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

The Impact of Forced Air System Blowers on Furnace Performance and Utility The Impact of Forced Air System Blowers on Furnace Performance and Utility Loads Speaker(s): Bert Phillips Date: November 7, 2003 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: James Lutz Bert Phillips will talk about the impact of forced air system blower performance on furnace or heating performance and on utility loads, and what can be done to reduce blower power requirements. He will also briefly discuss a ground source heat pump monitoring study that he just finished. Mr. Phillips is a registered Professional Engineer in three Canadian provinces and part owner of UNIES Ltd., an engineering firm in Winnipeg, Manitoba (60 miles straight north of the North Dakota/Minnesota border). He does research and HVAC system design and investigates

11

Residential Forced Air System Cabinet Leakage and Blower Performance  

E-Print Network (OSTI)

inResidentialSpaceConditioning Systems. Canadianin residential space conditioning systems. Keywords:in residential space conditioning systems. This standard

Walker, Iain S.

2010-01-01T23:59:59.000Z

12

Aiding Air Force budget analysis with expert system tools and techniques  

SciTech Connect

A system to capture US Air Force financial expertise is currently under development. To accomplish its mission of costing Air Force programs, the Director of the Budget utilizes the services of budget analysts. Analysts are required to prepare three cost exercises during the year: the Program Objective Memorandum (POM), the Budget Estimation Submission (BES), and the President's Budget (PB). Additionally, during budget calls and budget execution, analysts must make decisions regarding funding obligations and outlays. Analysis and modification of outlay projection plans require the use of operational and procedural heuristics. These problem-solving steps followed by analysts are being used to develop a prototype. Information regarding the prototype, the tool, and its capabilities are presented. Additional features of the program are described including integration with existing information management systems.

Hardee, H.K.; Jones, K.A.; Morris, J.D.; Emrich, M.L.; Ali, H.

1987-09-14T23:59:59.000Z

13

Sensitivity of forced air distribution system efficiency to climate, duct location, air leakage and insulation  

E-Print Network (OSTI)

Location, Air Leakage and Insulation Iain S. Walker Energy4 Duct Insulation, Location and Leakageinsulation

Walker, Iain

2001-01-01T23:59:59.000Z

14

Distribution System Audits, Leak Detection, and Repair: Kirtland Air Force Base Leak Detection and Repair Program  

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

Best Management Practice Best Management Practice Case Study #3 Distribution System Audits, Leak Detection, and Repair Kirtland Air Force Base - Leak Detection and Repair Program Overview Kirtland Air Force Base (AFB) performed an award winning leak detection and repair program in 2006. The results of the project are saving Kirtland AFB 179 million gallons each year, which is over 16% of the total water use at the base. Kirtland AFB is located on 52,000 acres, southeast and adjacent to Albuquerque, New Mexico. The area is a high altitude desert, only receiving about 8 inches of rain each year. Kirtland AFB draws water from an under- ground aquifer via seven production wells through- out the base. The base also has access to water from the City of Albuquerque. The underground water

15

Distribution System Audits, Leak Detection, and Repair: Kirtland Air Force Base Leak Detection and Repair Program  

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

Best Management Practice Best Management Practice Case Study #3 Distribution System Audits, Leak Detection, and Repair Kirtland Air Force Base - Leak Detection and Repair Program Overview Kirtland Air Force Base (AFB) performed an award winning leak detection and repair program in 2006. The results of the project are saving Kirtland AFB 179 million gallons each year, which is over 16% of the total water use at the base. Kirtland AFB is located on 52,000 acres, southeast and adjacent to Albuquerque, New Mexico. The area is a high altitude desert, only receiving about 8 inches of rain each year. Kirtland AFB draws water from an under- ground aquifer via seven production wells through- out the base. The base also has access to water from the City of Albuquerque. The underground water

16

Forced air fireplace furnace  

Science Conference Proceedings (OSTI)

The design of heating system for buildings including a fireplace with an open front hearth for burning firewood, a chimney extending from the upper portion of the hearth, a metal firebox being open in the front and closed on the sides and back, a plenum chamber within and surrounding the sides and back of the metal firebox and the chimney lower portion, a horizontal heat distribution chamber positioned in the building attic and communicating at one end with the plenum chamber is described. An air distribution duct connects to the other end of the air distributing chamber, the duct extending to discharge heated air to a place in the building remote from the fireplace. A fan is placed in the horizontal air distributing chamber, and a return air duct extends from selected place in the building and communicates with the plenum chamber lower portion so that the fan draws air through the return air duct, through the plenum chamber around the firebox where the air is heated, through the horizontal distribution chamber, and out through the distribution duct for circulation of the heated air within the building.

Bruce, R.W.; Gorman, R.E.

1980-10-28T23:59:59.000Z

17

AIR FORCE SPECIAL WEAPONS CENTER  

Office of Legacy Management (LM)

HEADQUARTERS aII?y HEADQUARTERS aII?y 9 AIR FORCE SPECIAL WEAPONS CENTER 1 AIR FORCE SYSTEMS COMMAND . - KlRTlAND AIR FORCE BASE, NEW MEXICO - k FINAL REPORT O N AIR FORCE PARTICIPATION PROJECT RULISON .1 O c t o b e r 1969 P r e p a r e d by : CONT INENTAL TEST D I V I S ION DIRECTORATE OF NUCLEAR FIELD OPERATIONS This page intentionally left blank INDEX AIR FORCE PARTICIPATION I N PROJECT RULISON FINAL REPORT PARAGRAPH BASIC REPORT SUBJECT R e f e r e n c e s PAGE 2 G e n e r a l 1 3 P l a n n i n g 3 4 Command a n d C o n t r o l 5 O p e r a t i o n s , G r a n d ' J u n c t i o n M u n i c i p a l A i r p o r t . . ' A i r O p e r a t i o n s C e n t e r , He1 i c o p t e r P a d / ' 7.. - . M a t e r i e l : ' 8 M e d i c a l 1 9 R a d - S a f e C r a s h - R e s c u e S e c u r i t y 2 1 C o m m u n i c a t i o n s ~ d m i n i s t r a t ' i o n Summary ATTACHMENTS ATTACHMENT SUBJECI' 1 F r a g O r d e r 69-1 ( ~ r o j ' e c t RULISON) , AFSWC D

18

Sensitivity of forced air distribution system efficiency to climate, duct location, air leakage and insulation  

Science Conference Proceedings (OSTI)

This study was performed in order to find suitable efficiency and leakage specifications for Energy Star duct systems and provide recommendations on duct insulation specifications. This analysis looks at a typical house, with a selection of duct locations, climates, duct insulation (R-value), and duct leakage. A set of calculations were performed with reduced capacity and airflow to look at the effect of variable capacity systems. This was done to address concerns regarding the increased efficiency of multi-capacity equipment due to good part load performance and how these efficiency gains may be offset by increased duct losses. The duct system efficiencies were calculated using the procedures in proposed ASHRAE Standard 152P ''Method of Test for Determining the Design and Seasonal Efficiencies of Residential Thermal Distribution Systems'' (ASHRAE 1999). This proposed ASHRAE Standard can be used to calculate duct efficiency for both design and seasonal weather conditions. In this report, the seasonal efficiencies are used for most of the analysis because they are the most appropriate for estimating energy consumption in buildings. The effects at peak conditions are examined for changing duct insulation in order to provide preliminary estimates of the potential responses to time of use pricing. The study was performed in two parts. The first part focused on duct leakage and the second part on duct insulation. The HVAC systems in the two parts share many attributes, however, they differ in detail and so are treated separately here. All the calculation results are summarized in tables in the Appendix, and specific results are given in the text.

Walker, Iain

2001-09-01T23:59:59.000Z

19

Field Measurements of Efficiency and Duct Effectiveness in Residential Forced Air Distributions Systems  

E-Print Network (OSTI)

sealing and insulating the duct system. ABSTRACT Forced airair conditioning, gas furnaces, electric furnaces and heat pumps. The retrofits consisted of sealing

Jump, D.A.

2011-01-01T23:59:59.000Z

20

Simulations of sizing and comfort improvements for residential forced-air heating and cooling systems  

SciTech Connect

In many parts of North America residential HVAC systems are installed outside conditioned space. This leads to significant energy losses and poor occupant comfort due to conduction and air leakage losses from the air distribution ducts. In addition, cooling equipment performance is sensitive to air flow and refrigerant charge that have been found to be far from manufacturers specifications in most systems. The simulation techniques discussed in this report were developed in an effort to provide guidance on the savings potentials and comfort gains that can be achieved by improving ducts (sealing air leaks) and equipment (correct air-flow and refrigerant charge). The simulations include the complex air flow and thermal interactions between duct systems, their surroundings and the conditioned space. They also include cooling equipment response to air flow and refrigerant charge effects. Another key aspect of the simulations is that they are dynamic to account for cyclic losses from the HVAC system and the effect of cycle length on energy and comfort performance. To field test the effect of changes to residential HVAC systems requires extensive measurements to be made for several months for each condition tested. This level of testing is often impractical due to cost and time limitations. Therefore the Energy Performance of Buildings Group at LBNL developed a computer simulation tool that models residential HVAC system performance. This simulation tool has been used to answer questions about equipment downsizing, duct improvements, control strategies and climate variation so that recommendations can be made for changes in residential construction and HVAC installation techniques that would save energy, reduce peak demand and result in more comfortable homes. Although this study focuses on California climates, the simulation tool could easily be applied to other climates. This report summarizes the simulation tool and discusses the significant developments that allow the use of this tool to perform detailed residential HVAC system simulations. The simulations have been verified by comparison to measured results in several houses over a wide range of weather conditions and HVAC system performance. After the verification was completed, more than 350 cooling and 450 heating simulations were performed. These simulations covered a range of HVAC system performance parameters and California climate conditions (that range from hot dry deserts to cold mountain regions). The results of the simulations were used to show the large increases in HVAC system performance that can be attained by improving the HVAC duct distribution systems and by better sizing of residential HVAC equipment. The simulations demonstrated that improved systems can deliver improved heating or cooling to the conditioned space, maintain equal or better comfort while reducing peak demand and the installed equipment capacity (and therefore capital costs).

Walker, I.S.; Degenetais, G.; Siegel, J.A.

2002-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "forced air system" 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

Comparison between predicted duct effectiveness from proposed ASHRAE Standard 152P and measured field data for residential forced air cooling systems  

E-Print Network (OSTI)

for Forced Air Systems in Proposed ASHRAE Standard 152P.ASHRAE Transactions, 104(1B), 1360-1375. Walker I, ShermanDuct Effectiveness from Proposed ASHRAE Standard 152P and

Siegel, Jeffrey A.; McWilliams, Jennifer A.; Walker, Iain S.

2002-01-01T23:59:59.000Z

22

Air Force Enhanced Use Lease  

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

1 1 Air Force Enhanced Use Lease Mr. Brian Brown 16 Oct. 12 I n t e g r i t y - S e r v i c e - E x c e l l e n c e 2 Agenda  Brian Brown  Enhanced Use Lease (EUL) Overview  Energy EULs  EUL Goals  David Swanson  Energy EUL Market Drivers  Current EUL Projects  Partnering with the Air Force  Contact Information I n t e g r i t y - S e r v i c e - E x c e l l e n c e 3 Overview  Authority 10 USC 2667  An EUL is a lease  By the government  Of "non-excess" property  Under the control of the government  To a public or private sector lessee  In exchange for fair market value rental payments in cash and/or in kind consideration I n t e g r i t y - S e r v i c e - E x c e l l e n c e

23

Air Force Announces Funding for Alternative Energy Research ...  

Air Force Announces Funding for Alternative Energy Research & Development. December 16, 2013. The Air Force Research Laboratory (AFRL) has ...

24

U.S. Air Force Fact Sheet Air Force Reserve Officer Training Corps  

E-Print Network (OSTI)

merged under the newly created parent organization, HQ Air Force Officer and Accession Training School-to-day operations of either organization. In June 2008, HQ AFOATS was redesignated as the Jeanne M. Holm Center,796 new Second Lieutenants who entered active duty in the United States Air Force. Organization Air Force

Su, Xiao

25

Simulations of sizing and comfort improvements for residential forced-air heating and cooling systems  

E-Print Network (OSTI)

heating system given by ACCA R-J for different climate zonesClimate Zone Capacity, kW (kBtu/h ) Climate Zone Capacity, kW ( kBtu/h )

Walker, I.S.; Degenetais, G.; Siegel, J.A.

2002-01-01T23:59:59.000Z

26

Measure Guideline: Combination Forced-Air Space and Tankless Domestic Hot Water Heating Systems  

SciTech Connect

This document describes design and application guidance for combination space and tankless domestic hot water heating systems (combination systems) used in residential buildings, based on field evaluation, testing, and industry meetings conducted by Building Science Corporation. As residential building enclosure improvements continue to drive heating loads down, using the same water heating equipment for both space heating and domestic water heating becomes attractive from an initial cost and space-saving perspective. This topic is applicable to single- and multi-family residential buildings, both new and retrofitted.

Rudd, A.

2012-08-01T23:59:59.000Z

27

Kirland Air Force Base wins Robot Rodeo  

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

Kirland Air Force Base wins Robot Rodeo Kirland Air Force Base wins Robot Rodeo Community Connections: Our link to Northern New Mexico Communities Latest Issue:Dec. 2013 - Jan. 2014 All Issues » submit Kirland Air Force Base wins Robot Rodeo Hazardous devices teams test their maneuvering skills July 1, 2013 Students from Valarde Middle School won the video competition in the Best in Show and Middle School categories. They are shown here with sixth-grade teacher Jimmy Lara. During the Robot Rodeo, an unseen operator attempts to conduct reconnaissance and rescue injured personnel Contact Editor Linda Anderman Email Community Programs Office Kurt Steinhaus Email Kirland Air Force Base wins Robot Rodeo Police and public safety teams from as far away as New Jersey recently convened in Albuquerque to test their ability to remotely deploy robots

28

Air Force Achieves Fuel Efficiency through Industry Best Practices...  

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

ideas and implement initiatives with the Air Force Achieves Fuel Efficiency through Industry Best Practices The Air Force Energy Plan is built upon three pillars: reduce...

29

Case Study - Hill Air Force Base, Utah | Department of Energy  

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

Hill Air Force Base, Utah Hill Air Force Base, Utah Case Study - Hill Air Force Base, Utah October 7, 2013 - 2:00pm Addthis Overview Energy savings performance contracting at Hill Air Force Base generated much interest during a recent training session on energy management that downlinked 12 Department of Defense sites. Energy systems in 940 buildings on the Base will be upgraded under an 18-year ESPC between the Government and the energy service company, CES/Way. Improvements are distributed over five task orders that will be completed in five years, with CES/Way providing $2.5 million in up-front costs for the first two task orders. Utah Power & Light will provide $8 million in rebates to help cover the contractor's initial investment, maintenance services, and interest costs.

30

Clean Air Task Force CATF | Open Energy Information  

Open Energy Info (EERE)

Task Force CATF Jump to: navigation, search Name Clean Air Task Force (CATF) Place Boston, Massachusetts Zip 2108 Product Massachusetts-based scientific research and legal advocacy...

31

Ellsworth Air Force Base Advanced Metering Project  

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

Ellsworth Air Force Base Ellsworth Air Force Base Advanced Metering Project A Partnership between Ellsworth AFB and MDU Resources Group, Inc. to install advanced metering on all large buildings on EAFB  Based in Bismarck, North Dakota  Celebrated our 85 th year in 2009  NYSE - MDU for over 60 years  Over $4B market cap  Fortune 500 Company  Member of the S&P MidCap 400 Index  Over 8,000 employees in 44 states  Business Lines:  Energy  Utility Resources  Construction Materials  Construction Materials  Energy  Oil and Gas Production  Utility Resources  Natural Gas Pipelines  Construction Services  Electric / Natural Gas Utilities  Utility Resources  Montana - Dakota Utilities Co.  Cascade Natural Gas Co.  Intermountain Gas Corporation

32

US Air Force Facility Energy Management Program - How Industry Can Help the Air Force Meet Its Objectives  

E-Print Network (OSTI)

This paper describes the Air Force's facility energy management program including how industry can help the Air Force meet its facility energy objectives. Background information on energy use and energy conservation efforts are presented to give the reader an understanding of the magnitude of energy used by the Air Force and how greater efficiency of use is being approached.

Holden, P. C.; Kroop, R. H.

1983-01-01T23:59:59.000Z

33

Feature - Air Force Fellows helping work toward smarter diesel engines  

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

Air Force Fellows helping work toward smarter diesel engines Air Force Fellows helping work toward smarter diesel engines Air Force Fellows Clint Abell (left) and Jeff Gillen work on Smarter Diesel Engine (SDE) 21. The project involves using ion sensors to help the engine run at maximum efficiency. Air Force Fellows Clint Abell (left) and Jeff Gillen work on Smarter Diesel Engine (SDE) 21. The project involves using ion sensors to help the engine run at maximum efficiency. (Photo by Wes Agresta) One of the three core values of the Air Force is "excellence in all we do." So it should be no surprise that there are currently two Air Force officers here at Argonne studying ways to improve the efficiency of military vehicles. Lieutenant Colonel Jeff Gillen and Major Clint Abell are the fourth set of Air Force Fellows to spend time at Argonne, but the first to be stationed

34

Force Modulator System  

SciTech Connect

Many metal parts manufacturers use large metal presses to shape sheet metal into finished products like car body parts, jet wing and fuselage surfaces, etc. These metal presses take sheet metal and - with enormous force - reshape the metal into a fully formed part in a manner of seconds. Although highly efficient, the forces involved in forming metal parts also damage the press itself, limit the metals used in part production, slow press operations and, when not properly controlled, cause the manufacture of large volumes of defective metal parts. To date, the metal-forming industry has not been able to develop a metal-holding technology that allows full control of press forces during the part forming process. This is of particular importance in the automotive lightweighting efforts under way in the US automotive manufacturing marketplace. Metalforming Controls Technology Inc. (MC2) has developed a patented press control system called the Force Modulator that has the ability to control these press forces, allowing a breakthrough in stamping process control. The technology includes a series of hydraulic cylinders that provide controlled tonnage at all points in the forming process. At the same time, the unique cylinder design allows for the generation of very high levels of clamping forces (very high tonnages) in very small spaces; a requirement for forming medium and large panels out of HSS and AHSS. Successful production application of these systems testing at multiple stamping operations - including Ford and Chrysler - has validated the capabilities and economic benefits of the system. Although this technology has been adopted in a number of stamping operations, one of the primary barriers to faster adoption and application of this technology in HSS projects is system cost. The cost issue has surfaced because the systems currently in use are built for each individual die as a custom application, thus driving higher tooling costs. This project proposed to better marry the die-specific Force Modulator technology with stamping presses in the form of a press cushion. This system would be designed to operate the binder ring for multiple parts, thus cutting the per-die cost of the technology. This study reports the results of technology field application. This project produced the following conclusions: (1) The Force Modulator system is capable of operating at very high tempos in the stamping environment; (2) The company can generate substantial, controlled holding tonnage (binder ring pressure) necessary to hold high strength steel parts for proper formation during draw operations; (3) A single system can be designed to operate with a family of parts, thus significantly reducing the per-die cost of a FM system; (4) High strength steel parts made with these systems appear to show significant quality improvements; (5) The amounts of steel required to make these parts is typically less than the amounts required with traditional blank-holding technologies; and (6) This technology will aid in the use of higher strength steels in auto and truck production, thus reducing weight and improving fuel efficiency.

Redmond Clark

2009-04-30T23:59:59.000Z

35

Geothermal-resource verification for Air Force bases  

DOE Green Energy (OSTI)

This report summarizes the various types of geothermal energy reviews some legal uncertainties of the resource and then describes a methodology to evaluate geothermal resources for applications to US Air Force bases. Estimates suggest that exploration costs will be $50,000 to $300,000, which, if favorable, would lead to drilling a $500,000 exploration well. Successful identification and development of a geothermal resource could provide all base, fixed system needs with an inexpensive, renewable energy source.

Grant, P.R. Jr.

1981-06-01T23:59:59.000Z

36

Renewable Hydrogen Production at Hickam Air Force Base  

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

Hydrogen Production at Hickam Air Force Base November 2009 Hawaii Center for Advanced Transportation Technologies *&1; Established by the High Technology Development Corporation (a...

37

Brig. Gen. Dawkins honored at Air Force promotion ceremony | National  

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

Dawkins honored at Air Force promotion ceremony | National Dawkins honored at Air Force promotion ceremony | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Brig. Gen. Dawkins honored at Air Force ... Brig. Gen. Dawkins honored at Air Force promotion ceremony Posted By Office of Public Affairs Brig. Gen. Dawkins honored at Air Force promotion ceremony

38

An analysis of retention issues of scientists, engineers, and program managers in the US Air Force  

E-Print Network (OSTI)

The United States Air Force is having a difficult time retaining their technical officers, who are critical to the success of their research, development, and acquisitions of major military and defense systems. A statistical ...

Beck, Derek William, 1977-

2005-01-01T23:59:59.000Z

39

Piezoresistive cantilever force-clamp system  

Science Conference Proceedings (OSTI)

We present a microelectromechanical device-based tool, namely, a force-clamp system that sets or ''clamps'' the scaled force and can apply designed loading profiles (e.g., constant, sinusoidal) of a desired magnitude. The system implements a piezoresistive cantilever as a force sensor and the built-in capacitive sensor of a piezoelectric actuator as a displacement sensor, such that sample indentation depth can be directly calculated from the force and displacement signals. A programmable real-time controller operating at 100 kHz feedback calculates the driving voltage of the actuator. The system has two distinct modes: a force-clamp mode that controls the force applied to a sample and a displacement-clamp mode that controls the moving distance of the actuator. We demonstrate that the system has a large dynamic range (sub-nN up to tens of {mu}N force and nm up to tens of {mu}m displacement) in both air and water, and excellent dynamic response (fast response time, instruments such as a microscope with patch-clamp electronics. We demonstrate the capabilities of the system by using it to calibrate the stiffness and sensitivity of an electrostatic actuator and to measure the mechanics of a living, freely moving Caenorhabditis elegans nematode.

Park, Sung-Jin; Petzold, Bryan C.; Pruitt, Beth L. [Department of Mechanical Engineering, Stanford University, Stanford, California 94305 (United States); Goodman, Miriam B. [Department of Molecular and Cellular Physiology, Stanford University, Stanford, California 94305 (United States)

2011-04-15T23:59:59.000Z

40

Portfolio management in the Air Force : current status and opportunities  

E-Print Network (OSTI)

There are hundreds of weapons programs, under the management of the United States Air Force worth billions of dollars. These programs are being developed to fulfill a need in the U.S. defense strategy. Bringing these weapon ...

Morgan, Dave B

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "forced air system" 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

Developer Air Force Center for Engineering and the Environment...  

Open Energy Info (EERE)

en.openei.orgwikiSpecial:SearchByPropertyDeveloperAir-20Force-20Center-20for-20Engineering-20and-20the-20Environment" Special pages About us Disclaimers Energy blogs...

42

Air Force Adoption of ICME for Materials and Manufacturing R&D  

Science Conference Proceedings (OSTI)

Abstract Scope, Numerous challenges and opportunities face the Air Force with regard to materials and manufacturing R&D. An aging Air Force aircraft fleet,...

43

Air heating system  

DOE Patents (OSTI)

A self-starting, fuel-fired, air heating system including a vapor generator, a turbine, and a condenser connected in a closed circuit such that the vapor output from the vapor generator is conducted to the turbine and then to the condenser where it is condensed for return to the vapor generator. The turbine drives an air blower which passes air over the condenser for cooling the condenser. Also, a condensate pump is driven by the turbine. The disclosure is particularly concerned with the provision of heat exchanger and circuitry for cooling the condensed fluid output from the pump prior to its return to the vapor generator.

Primeau, John J. (19800 Seminole Rd., Euclid, OH 44117)

1983-03-01T23:59:59.000Z

44

Compressed Air System Maintenance Guide  

Science Conference Proceedings (OSTI)

The "Compressed Air System Maintenance Guide" provides fossil plant personnel with information on the operation and maintenance of the compressed air system. The contents of this guide will assist personnel in improving performance of the compressed air system, reducing maintenance costs, and increasing air system reliability.

2002-11-27T23:59:59.000Z

45

Demonstration of Security Benefits of Renewable Generation at FE Warren Air Force Base  

DOE Green Energy (OSTI)

Report detailing field demonstration of security benefits of renewable generation at FE Warren Air Force Base.

Warwick, William M.; Myers, Kurt; Seifert, Gary

2010-12-31T23:59:59.000Z

46

Nuclear Forces and Nuclear Systems  

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

Forces and Nuclear Systems Forces and Nuclear Systems Our goal is to achieve a description of nuclear systems ranging in size from the deuteron to nuclear matter and neutron stars using a single parameterization of the nuclear forces. Our work includes both the construction of two- and three-nucleon potentials and the development of many-body techniques for computing nuclear properties with these interactions. Detailed quantitative, computationally intense studies are essential parts of this work. In the last decade we have constructed several realistic two- and three-nucleon potential models. The NN potential, Argonne v18, has a dominant charge-independent piece plus additional charge-dependent and charge-symmetry-breaking terms, including a complete electromagnetic interaction. It fits 4301 pp and np elastic scattering data with a chi**2

47

Energy Efficiency Upgrades for Little Rock Air Force Base  

DOE Green Energy (OSTI)

Little Rock Air Force Base (LRAFB), in partnership with the local utility, Entergy Services, Inc., has reduced energy costs and used savings from investments in high-efficiency equipment to maintain and improve the condition of base housing and other facilities. Three projects were completed, with over $10 million invested. Major accomplishments include replacing air-to-air heat pumps with high-efficiency ground-source heat pumps (GSHPs) in more than 1,500 base housing units, lighting modifications to 10 buildings, upgrade of HVAC equipment in the base's enlisted club, and energy-efficient lighting retrofits for LRAFB's flight simulator.

Goldman, C.; Dunlap, M.A.

2000-11-13T23:59:59.000Z

48

Analysis of 1994 Air Force toxic release inventory reporting. Master`s thesis  

Science Conference Proceedings (OSTI)

The purpose of this research is to analyze the Air Force`s 1994 Toxic Release Inventory data. Statistical tests were used to meet the following research objectives: (1) review the CY 94 data to determine which chemicals were most often reported and which bases and major commands had the most releases in terms of the number of chemicals reported and the amount of chemicals reported and (2) investigate factors which could influence the reporting status of a facility. An analysis of a survey of Air Force facilities indicated that two factors had an influence on the reporting status of Air Force facilities: (1) whether the TRI point of contact had confidence in the completeness of the data used for threshold computations and (2) whether the primary database used for threshold computations was the Standard Base Supply System.

Pollock, B.A.

1995-12-01T23:59:59.000Z

49

TransForum v9n2 - Air Force Fellows and Smarter Diesel Engines  

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

Air Force Fellows Help Work Toward Smarter Diesel Engines Air force fellows Major Clint Abell (center), Steve McConnell, Lt. Col. Jeff Gillen, Thomas Wallner and Steve Ciatti (in...

50

Statistical characterization of the forces on spheres in an upflow of air  

E-Print Network (OSTI)

The dynamics of a sphere fluidized in a nearly-levitating upflow of air were previously found to be identical to those of a Brownian particle in a two-dimensional harmonic trap, consistent with a Langevin equation [Ojha {\\it et al.}, Nature {\\bf 427}, 521 (2004)]. The random forcing, the drag, and the trapping potential represent different aspects of the interaction of the sphere with the air flow. In this paper we vary the experimental conditions for a single sphere, and report on how the force terms in the Langevin equation scale with air flow speed, sphere radius, sphere density, and system size. We also report on the effective interaction potential between two spheres in an upflow of air.

R. P. Ojha; A. R. Abate; D. J. Durian

2004-06-30T23:59:59.000Z

51

Computer controlled air conditioning systems  

SciTech Connect

This patent describes an improvement in a computer controlled air conditioning system providing for circulation of air through an air conditioned house in contact with concrete walls requiring a humidity within a critical range. The improvement consists of: a computer for processing sensed environmental input data including humidity and oxygen to produce output control signals for affecting the humidity of the air in the house; provision for an air flow circulation path through the house in contact with the concrete walls; sensing responsive to the amount of oxygen in the house for providing input signals to the computer; mixing for combining with the air in the house a variable amount of fresh atmospheric air to supply fresh oxygen; and humidity modifying means for modifying the humidity of the air flowing in the flow path responsive to the control signals.

Dumbeck, R.F.

1986-02-04T23:59:59.000Z

52

Federal Energy Management Program: Case Study - Hill Air Force Base, Utah  

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

Case Study - Hill Case Study - Hill Air Force Base, Utah to someone by E-mail Share Federal Energy Management Program: Case Study - Hill Air Force Base, Utah on Facebook Tweet about Federal Energy Management Program: Case Study - Hill Air Force Base, Utah on Twitter Bookmark Federal Energy Management Program: Case Study - Hill Air Force Base, Utah on Google Bookmark Federal Energy Management Program: Case Study - Hill Air Force Base, Utah on Delicious Rank Federal Energy Management Program: Case Study - Hill Air Force Base, Utah on Digg Find More places to share Federal Energy Management Program: Case Study - Hill Air Force Base, Utah on AddThis.com... Energy Savings Performance Contracts Assistance & Contacts Resources Laws & Regulations Energy Service Companies Awarded Projects

53

Air ejector augmented compressed air energy storage system  

DOE Patents (OSTI)

Energy is stored in slack demand periods by charging a plurality of underground reservoirs with air to the same peak storage pressure, during peak demand periods throttling the air from one storage reservoir into a gas turbine system at a constant inlet pressure until the air pressure in the reservoir falls to said constant inlet pressure, thereupon permitting air in a second reservoir to flow into said gas turbine system while drawing air from the first reservoir through a variable geometry air ejector and adjusting said variable geometry air ejector, said air flow being essentially at the constant inlet pressure of the gas turbine system.

Ahrens, Frederick W. (Naperville, IL); Kartsounes, George T. (Naperville, IL)

1980-01-01T23:59:59.000Z

54

Mountain Home Air Force Base, Idaho Geothermal Resource Assessment and Future Recommendations  

SciTech Connect

The U.S. Air Force is facing a number of challenges as it moves into the future, one of the biggest being how to provide safe and secure energy to support base operations. A team of scientists and engineers met at Mountain Home Air Force Base in early 2011 near Boise, Idaho, to discuss the possibility of exploring for geothermal resources under the base. The team identified that there was a reasonable potential for geothermal resources based on data from an existing well. In addition, a regional gravity map helped identify several possible locations for drilling a new well. The team identified several possible sources of funding for this wellthe most logical being to use U.S. Department of Energy funds to drill the upper half of the well and U.S. Air Force funds to drill the bottom half of the well. The well was designed as a slimhole well in accordance with State of Idaho Department of Water Resources rules and regulations. Drilling operations commenced at the Mountain Home site in July of 2011 and were completed in January of 2012. Temperatures increased gradually, especially below a depth of 2000 ft. Temperatures increased more rapidly below a depth of 5500 ft. The bottom of the well is at 5976 ft, where a temperature of about 140C was recorded. The well flowed artesian from a depth below 5600 ft, until it was plugged off with drilling mud. Core samples were collected from the well and are being analyzed to help understand permeability at depth. Additional tests using a televiewer system will be run to evaluate orientation and directions at fractures, especially in the production zone. A final report on the well exploitation will be forthcoming later this year. The Air Force will use it to evaluate the geothermal resource potential for future private development options at Mountain Home Air Force Base. In conclusion, Recommendation for follow-up efforts include the following:

Joseph C. Armstrong; Robert P. Breckenridge; Dennis L. Nielson; John W. Shervais; Thomas R. Wood

2013-03-01T23:59:59.000Z

55

Energy-conservation study for the US Air Force Academy  

SciTech Connect

The United States Air Force Academy (AFA) has asked the Los Alamos National Laboratory to assist them in conducting detailed energy and solar analyses of selected AFA buildings using the DOE-2 building energy analysis computer program. The results of the energy conservation study conducted by Los Alamos in FY 1981 and 1982 for Building 2360 (Vandenberg Hall), Building 2169 (Field House), and Building 2410 (Aeronautics Laboratory) are presented. Energy Conservation and Solar Opportunities (ECOs) are identified for each building and predicted heating, cooling and electric energy savings are presented for each ECO. Economic results are summarized as annual dollars saved, discounted benefit-to-cost ratio, maximum investment targets, and the life-cycle cost of implementing each ECO.

Peterson, J.L.; Davis, L.B.

1983-01-01T23:59:59.000Z

56

Trends and Market Forces Shaping Small Community Air Service in the United States  

E-Print Network (OSTI)

This report, Trends and Market Forces Shaping Small Community Air Service in the United States, is the first in a series of papers written under the umbrella of the MIT Small Community Air Service White Paper series. The ...

Wittman, Michael D.

2013-05-07T23:59:59.000Z

57

Nellis Air Force Base solar array provides model for renewable projects |  

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

Nellis Air Force Base solar array provides model for renewable Nellis Air Force Base solar array provides model for renewable projects Nellis Air Force Base solar array provides model for renewable projects March 24, 2010 - 4:58pm Addthis The solar array at Nellis Air Force Base in Nevada consists of 70,000 panels. | Photo by Larry E. Reid Jr./U.S. Air Force The solar array at Nellis Air Force Base in Nevada consists of 70,000 panels. | Photo by Larry E. Reid Jr./U.S. Air Force A public-private partnership has helped one Air Force base reduce its energy costs and convert to 25 percent renewable energy. Nellis Air Force Base, just north of Las Vegas, took a big step in 2007 when it installed a 14.2-megawatt, 70,000-panel photovoltaic solar array that reduced carbon dioxide emissions by 24,000 tons a year. Built partly on a landfill, the

58

Robins Air Force Base Integrated Resource Assessment. Volume 2, Baseline Detail  

Science Conference Proceedings (OSTI)

This report documents the assessment of baseline energy use at Robins Air Force Base (AFB), a US Air Force Materiel Command facility located near Macon, Georgia. This is a companion report to Volume 1, Executive Summary, and Volume 3, Integrated Resource Assessment. The US Air Force Materiel Command (AFMC) has tasked the US Department of Energy (DOE) Federal Energy Management Program (FEMP), supported by the Pacific Northwest Laboratory (PNL), to identify, evaluate, and assist in acquiring all cost-effective energy projects at Robins AFB. This is part of a model program that PNL is designing to support energy-use decisions in the federal sector. This program (1) identifies and evaluates all cost-effective energy projects; (2) develops a schedule at each installation for project acquisition considering project type, size, timing, and capital requirements, as well as energy and dollar savings; and (3) targets 100% of the financing required to implement energy efficiency projects. PNL applied this model program to Robins AFB. The analysis examines the characteristics of electric, natural gas, oil, propane, and wood chip use for fiscal year 1991. The results include energy-use intensities for the facilities at Robins AFB by building type, fuel type, and energy end use. A complete energy consumption reconciliation is presented that accounts for the distribution of all major energy uses and losses among buildings, utilities, and central systems.

Keller, J.M.; Sullivan, G.P.; Wahlstrom, R.R.; Larson, L.L.

1993-08-01T23:59:59.000Z

59

Exploration and Resource Assessment at Mountain Home Air Force Base, Idaho Using an Integrated Team Approach  

Science Conference Proceedings (OSTI)

The U.S. Air Force is facing a number of challenges as it moves into the future, one of the biggest being how to provide safe and secure energy to support base operations. A team of scientists and engineers met at Mountain Home Air Force Base near Boise, Idaho, to discuss the possibility of exploring for geothermal resources under the base. The team identified that there was a reasonable potential for geothermal resources based on data from an existing well. In addition, a regional gravity map helped identify several possible locations for drilling a new well. The team identified several possible sources of funding for this wellthe most logical being to use U.S. Department of Energy funds to drill the upper half of the well and U.S. Air Force funds to drill the bottom half of the well. The well was designed as a slimhole well in accordance with State of Idaho Department of Water Resources rules and regulations. Drilling operations commenced at the Mountain Home site in July of 2011 and were completed in January of 2012. Temperatures increased gradually, especially below a depth of 2000 ft. Temperatures increased more rapidly below a depth of 5500 ft. The bottom of the well is at 5976 ft, where a temperature of about 140C was recorded. The well flowed artesian from a depth below 5600 ft, until it was plugged off with drilling mud. Core samples were collected from the well and are being analyzed to help understand permeability at depth. Additional tests using a televiewer system will be run to evaluate orientation and directions at fractures, especially in the production zone. A final report on the well exploitation will be forthcoming later this year. The Air Force will use it to evaluate the geothermal resource potential for future private development options at Mountain Home AFB.

Joseph C. Armstrong; Robert P. Breckenridge; Dennis L. Nielson; John W. Shervais; Thomas R. Wood

2012-10-01T23:59:59.000Z

60

Future Direction of Supersonic Combustion Research: Air Force/NASA Workshop on Supersonic Combustion  

Science Conference Proceedings (OSTI)

The Air Force Office of Scientific Research, the Air Force Wright Laboratory Aero Propulsion and Power Directorate, and the NASA Langley Research Center held a joint supersonic combustion workshop on 14-16 May 1996. The intent of this meeting was to: ...

Tishkoff Julian M.; Drummond J. Philip; Edwards T.; Nejad A. S.

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "forced air system" 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

Magnus air turbine system  

DOE Patents (OSTI)

A Magnus effect windmill for generating electrical power is disclosed. A large nacelle-hub mounted pivotally (in Azimuth) atop a support tower carries, in the example disclosed, three elongated barrels arranged in a vertical plane and extending symmetrically radially outwardly from the nacelle. The system provides spin energy to the barrels by internal mechanical coupling in the proper sense to cause, in reaction to an incident wind, a rotational torque of a predetermined sense on the hub. The rotating hub carries a set of power take-off rollers which ride on a stationary circular track in the nacelle. Shafts carry the power, given to the rollers by the wind driven hub, to a central collector or accumulator gear assembly whose output is divided to drive the spin mechanism for the Magnus barrels and the main electric generator. A planetary gear assembly is interposed between the collector gears and the spin mechanism functioning as a differential which is also connected to an auxiliary electric motor whereby power to the spin mechanism may selectively be provided by the motor. Generally, the motor provides initial spin to the barrels for start-up after which the motor is braked and the spin mechanism is driven as though by a fixed ratio coupling from the rotor hub. During high wind or other unusual conditions, the auxiliary motor may be unbraked and excess spin power may be used to operate the motor as a generator of additional electrical output. Interposed between the collector gears of the rotating hub and the main electric generator is a novel variable speed drive-fly wheel system which is driven by the variable speed of the wind driven rotor and which, in turn, drives the main electric generator at constant angular speed. Reference is made to the complete specification for disclosure of other novel aspects of the system such as, for example, the aerodynamic and structural aspects of the novel Magnus barrels as well as novel gearing and other power coupling combination apparatus of the invention. A reading of the complete specification is recommended for a full understanding of the principles and features of the disclosed system.

Hanson, Thomas F. (24204 Heritage La., Newhall, CA 91321)

1982-01-01T23:59:59.000Z

62

Improved intake air filtration systems  

SciTech Connect

This report comprises the results of a project sponsored by the Pipeline Research Committee of the American Gas Association (Improved Intake Air Filtration Systems). The quality of the inlet air consumed by pipeline gas turbines plays a significant role in the performance, maintenance, and economy of turbine operations. The airborne contaminants may cause degradation of compressor blades and hot gas path components, primarily by erosion, corrosion, and fouling. Machines in the pipeline fleet have a typical average loss of 3.5% in output, chiefly caused by fouling of the gas turbine compressor. It also showed that: Air contamination could be significantly reduced by the use of more efficient air filtration systems, especially through the reduction of the quantity of smaller particles ingested.'' Filters which incorporated electrostatically charged fibers (achieved through the use of triboelectric [TE] effects) offered the most promising means for developing an improvement over paper media. The purpose of this program was to validate the use of new technology for self-cleaning air inlet filtration on gas turbine pumping applications. An approach utilizing triboelectrification of fabric filters was examined by testing to determine the penetration (efficiency), cleanability, pressure drop vs flow, and dust-holding capacity of seven pairs of filter cartridges: six fabric and one paper.

Lawson, C.C. (Lawson (Calvin C.), North Wildwood, NJ (United States))

1991-09-01T23:59:59.000Z

63

Forced Oscillations in Wind Energy Generation Systems  

Science Conference Proceedings (OSTI)

Use of the doubly fed induction generator (DFIG) in wind energy generation systems allows variable speed operation by using partially rated back-to-back quadruple active and reactive power PWM converters. The control of the system is very complex. Despite ... Keywords: Wind energy generation system, forced oscillation, stability

Zhen Li; Siu-Chung Wong; Chi K. Tse

2009-11-01T23:59:59.000Z

64

F.E. Warren Air Force Base Wind Farm | Open Energy Information  

Open Energy Info (EERE)

F.E. Warren Air Force Base Wind Farm F.E. Warren Air Force Base Wind Farm Jump to: navigation, search Name F.E. Warren Air Force Base Wind Farm Facility F.E. Warren Air Force Base Sector Wind energy Facility Type Community Wind Facility Status In Service Owner F.E. Warren Air Force Base Developer F.E. Warren Air Force Base Energy Purchaser F.E. Warren Air Force Base Location Near Cheyenne WY Coordinates 41.175569°, -104.880778° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.175569,"lon":-104.880778,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

65

Influence of Forced Large-Scale Atmospheric Patterns on Surface Air Temperature in China  

Science Conference Proceedings (OSTI)

The seasonality of the influence of the tropical Pacific sea surface temperature (SST)-forced large-scale atmospheric patterns on the surface air temperature (SAT) over China is investigated for the period from 1969 to 2001. Both observations and ...

Xiaojing Jia; Hai Lin

2011-03-01T23:59:59.000Z

66

Zoned heating and air conditioning system  

SciTech Connect

This patent describes a zoned heating and air conditioning system comprising: a central air handling system with an air heating means and an air cooling means and a blower connected to an air duct system; thermostats each have heating and cooling set points, respectively associated with and located in different zones of a building; dampers respectively associated with each building zone positioned in the air duct system. Each damper has an open position allowing air into the respective zone from the duct system and a closed position; relay means for connecting one thermostat to the air handling system upon a call for heating or cooling by one thermostat and disconnecting all other thermostats by connecting one thermostat's connections between the thermostat and air handling system. Only one thermostat is connected to the air handling system at a time and the relay means disconnects one thermostat from the air handling system after one thermostat is satisified; and damper actuating means for unlocking each damper in one building zone responsive actuated by a respective zone thermostat connected to the air handling system by the relay means. The damper actuates means including a damper solenoid for each damper located adjacent each damper and connected to a respective zone thermostat. It unlocks each damper in one building zone responsive to being actuated by the respective zone thermostat and unlocks the dampers in one building zone when one thermostat is actuated while preventing the dampers in another thermostat's building zone from unlocking.

Beachboard, S.A.

1987-06-16T23:59:59.000Z

67

Blue Horizons Study Assesses Future Capabilities and Technologies for the United States Air Force  

Science Conference Proceedings (OSTI)

The purpose of the Blue Horizons study was to determine the capabilities and technologies in which the United States Air Force would need to invest to maintain dominant air, space, and cyberspace capabilities in the year 2030. The study used two methodologies, ... Keywords: decision analysis, defense, multiple criteria, research and development, scenarios, technology, uncertainty

John P. Geis; Gregory S. Parnell; Harry Newton; Terry Bresnick

2011-07-01T23:59:59.000Z

68

Air distribution effectiveness with stratified air distribution systems  

E-Print Network (OSTI)

, Ph.D Qingyan Chen, Ph.D. Student Member ASHRAE Fellow ASHRAE ABSTRACT Stratified air distribution distribution systems has been taken into consideration by the ASHRAE standards through the air distribution effectiveness. For example, Table 6-1 of ANSI/ASHRAE Standard 62.1-2004 (ASHRAE 2004) defines the minimum

Chen, Qingyan "Yan"

69

Transfer of Air Force technical procurement bid set data to small businesses, using CALS and EDI: Test report  

Science Conference Proceedings (OSTI)

This report documents a test transfer of three Air Force technical procurement bid sets to one large and twelve small businesses, using the Department of Defense (DoD) Continuous Acquisition and Life-cycle Support (CALS) and ANSI ASC X12 Electronic Data Interchange (EDI) standards. The main goal of the test was to evaluate the effectiveness of using CALS technical data within the context of the DoD`s EDI-based standard approach to electronic commerce in procurement, with particular emphasis on receipt and use of the data by small contractors. Air Force procurement data was provided by the Sacramento Air Logistics Center at McClellan Air Force Base; the manufacturing participants were selected from among McClellan`s ``Blue Ribbon`` contractors, located throughout the US. The test was sponsored by the Air Force CALS Test Network, headquartered at Wright-Patterson Air Force Base. The test successfully demonstrated the technical feasibility of including CALS MIL-R-28002 (Raster) engineering data in an EDI Specification/Technical Information transaction set (ANSI ASC X12 841) when issuing electronic requests for quotation to small businesses. In many cases, the data was complete enough for the contractor participant to feel comfortable generating a quote. Lessons learned from the test are being fed back to the CALS and EDI standards organizations, and to future implementors of CALS-EDI based acquisition or contracting systems, which require the transfer of technical information, such as engineering data, manufacturing process data, quality test data, and other product or process data, in the form of a CALS or other digital datafile.

NONE

1994-08-15T23:59:59.000Z

70

Air Products Hydrogen Energy Systems | Department of Energy  

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

Air Products Hydrogen Energy Systems Air Products Hydrogen Energy Systems Hydrogen Infrastructure Air Products Hydrogen Energy Systems More Documents & Publications Quadrennial...

71

Strategy Guideline: Compact Air Distribution Systems  

SciTech Connect

This Strategy Guideline discusses the benefits and challenges of using a compact air distribution system to handle the reduced loads and reduced air volume needed to condition the space within an energy efficient home. Traditional systems sized by 'rule of thumb' (i.e., 1 ton of cooling per 400 ft2 of floor space) that 'wash' the exterior walls with conditioned air from floor registers cannot provide appropriate air mixing and moisture removal in low-load homes. A compact air distribution system locates the HVAC equipment centrally with shorter ducts run to interior walls, and ceiling supply outlets throw the air toward the exterior walls along the ceiling plane; alternatively, high sidewall supply outlets throw the air toward the exterior walls. Potential drawbacks include resistance from installing contractors or code officials who are unfamiliar with compact air distribution systems, as well as a lack of availability of low-cost high sidewall or ceiling supply outlets to meet the low air volumes with good throw characteristics. The decision criteria for a compact air distribution system must be determined early in the whole-house design process, considering both supply and return air design. However, careful installation of a compact air distribution system can result in lower material costs from smaller equipment, shorter duct runs, and fewer outlets; increased installation efficiencies, including ease of fitting the system into conditioned space; lower loads on a better balanced HVAC system, and overall improved energy efficiency of the home.

Burdick, A.

2013-06-01T23:59:59.000Z

72

Compressed air energy storage system  

DOE Patents (OSTI)

An internal combustion reciprocating engine is operable as a compressor during slack demand periods utilizing excess power from a power grid to charge air into an air storage reservoir and as an expander during peak demand periods to feed power into the power grid utilizing air obtained from the air storage reservoir together with combustible fuel. Preferably the internal combustion reciprocating engine is operated at high pressure and a low pressure turbine and compressor are also employed for air compression and power generation.

Ahrens, Frederick W. (Naperville, IL); Kartsounes, George T. (Naperville, IL)

1981-01-01T23:59:59.000Z

73

Air Force Academy, Colorado: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Force Academy, Colorado: Energy Resources Force Academy, Colorado: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 38.990448°, -104.860139° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.990448,"lon":-104.860139,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

74

Galileon forces in the Solar System  

E-Print Network (OSTI)

We consider the challenging problem of obtaining an analytic understanding of realistic astrophysical dynamics in the presence of a Vainshtein screened fifth force arising from infrared modifications of General Relativity. In particular, we attempt to solve -- within the most general flat spacetime galileon model -- the scalar force law between well separated bodies located well within the Vainshtein radius of the Sun. To this end, we derive the exact static Green's function of the galileon wave equation linearized about the background field generated by the Sun, for the minimal cubic and maximally quartic galileon theories, and then introduce a method to compute the general leading order force law perturbatively away from these limits. We also show that the same nonlinearities which produce the Vainshtein screening effect present obstacles to an analytic calculation of the galileon forces between closely bound systems within the solar system, such as that of the Earth and Moon. Within the test mass approximation, we deduce that a large enough quartic galileon interaction would suppress the effect on planetary perihelion precession below the level detectable by even the next-generation experiments.

Melinda Andrews; Yi-Zen Chu; Mark Trodden

2013-05-09T23:59:59.000Z

75

Galileon Forces in the Solar System  

E-Print Network (OSTI)

We consider the challenging problem of obtaining an analytic understanding of realistic astrophysical dynamics in the presence of a Vainshtein screened fifth force arising from infrared modifications of General Relativity. In particular, we attempt to solve -- within the most general flat spacetime galileon model -- the scalar force law between well separated bodies located well within the Vainshtein radius of the Sun. To this end, we derive the exact static Green's function of the galileon wave equation linearized about the background field generated by the Sun, for the minimal cubic and maximally quartic galileon theories, and then introduce a method to compute the general leading order force law perturbatively away from these limits. We also show that the same nonlinearities which produce the Vainshtein screening effect present obstacles to an analytic calculation of the galileon forces between closely bound systems within the solar system, such as that of the Earth and Moon. Within the test mass approximation, we deduce that a large enough quartic galileon interaction would suppress the effect on planetary perihelion precession below the level detectable by even the next-generation experiments.

Melinda Andrews; Yi-Zen Chu; Mark Trodden

2013-05-09T23:59:59.000Z

76

Industrial Compressed Air System Energy Efficiency Guidebook.  

DOE Green Energy (OSTI)

Energy efficient design, operation and maintenance of compressed air systems in industrial plants can provide substantial reductions in electric power and other operational costs. This guidebook will help identify cost effective, energy efficiency opportunities in compressed air system design, re-design, operation and maintenance. The guidebook provides: (1) a broad overview of industrial compressed air systems, (2) methods for estimating compressed air consumption and projected air savings, (3) a description of applicable, generic energy conservation measures, and, (4) a review of some compressed air system demonstration projects that have taken place over the last two years. The primary audience for this guidebook includes plant maintenance supervisors, plant engineers, plant managers and others interested in energy management of industrial compressed air systems.

United States. Bonneville Power Administration.

1993-12-01T23:59:59.000Z

77

Analysis of a Dedicated Outdoor Air System and Low Temperature Supply Air Conditioning System  

E-Print Network (OSTI)

This paper presents the principles and the characteristics of a dedicated outdoor air system (DOAS) and low temperature supply air system. DOAS is offered based on the demands of indoor air quality and the low temperature supply air system is offered based on the demands of saving energy. The two systems are very similar, which is analyzed in this paper. Using actual engineering, we compute the air flow rate, cold load and energy consumption in detail, and provide some good conclusions.

Guang, L.; Li, R.

2006-01-01T23:59:59.000Z

78

Militainment and mechatronics: Occultatio and the veil of science fiction cool in United States Air Force advertisements  

Science Conference Proceedings (OSTI)

In 2009, the United States Air Force aired a series of science fiction-themed recruitment commercials on network television and their official YouTube channel. In these advertisements, the superimposition of science fiction imagery over depictions of ... Keywords: Militainment, Rhetoric, Robots, Science fiction, United States Air Force, Video games

Nicholas R. Maradin, Iii

2013-06-01T23:59:59.000Z

79

Air Force Achieves Fuel Efficiency through Industry Best Practices (Brochure), Federal Energy Management Program (FEMP)  

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

highest potential to save aviation fuel. highest potential to save aviation fuel. All MAF personnel are encouraged to propose fuel savings ideas. These ideas are then processed as initiatives, assigned a primary point of contact, and routed through an analysis process to prepare the initiative for presenta- tion to the Air Force's corporate structure. The corporate structure then evaluates and determines the initiatives with the highest potential fuel savings. Fuel-saving efforts focus on six major areas: policy, planning, execution, maintenance, science and technology, and fuel-efficient aircraft systems. The MAF also established a predetermined set of fuel-savings metrics and required reporting. In fiscal year 2011, implemented fuel initiatives saved the MAF more than 42 million gallons of aviation fuel in both

80

Air Toxics Control by Wet Flue Gas Desulfurization Systems  

Science Conference Proceedings (OSTI)

This report provides an update on three tasks associated with the EPRI project, Air Toxics Control by Wet Flue Gas Desulfurization (FGD) Systems. The first task is an investigation of the factors that influence and control the oxidation-reduction potential (ORP) at which a limestone forced oxidation FGD system operates. Both a literature review and a numerical analysis of full-scale wet FGD data were conducted. Results from this task are presented and discussed in Section 2 of the ...

2012-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "forced air system" 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

DOE - Office of Legacy Management -- Air Force Plant No 36 - OH 06  

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

Air Force Plant No 36 - OH 06 Air Force Plant No 36 - OH 06 FUSRAP Considered Sites Site: AIR FORCE PLANT NO. 36 (OH.06 ) Eliminated from consideration under FUSRAP - Site referred to DOD Designated Name: Not Designated Alternate Name: General Electric Plant G.E. Evandale Plant G.E. Cincinnati Plant OH.06-1 Location: Lockland , Ohio OH.06-1 Evaluation Year: 1987 OH.06-1 Site Operations: Performed work under AEC license involving radioactive material between 1961 and 1970. OH.06-2 Site Disposition: Eliminated - Referred to DOD OH.06-3 Radioactive Materials Handled: Yes Primary Radioactive Materials Handled: Uranium and Thorium OH.06-4 Radiological Survey(s): Yes, environmental sampling (as a minimum) OH.06-4 Site Status: Eliminated from consideration under FUSRAP - Site referred to DOD OH.06-3

82

The Dynamics of Air Transportation System Transition  

E-Print Network (OSTI)

Both U.S. and European Air Transportation Systems face substantial challenges in transforming to meet future demand. This paper uses a feedback model to identify

Mozdzanowska, Aleksandra

83

Advanced Manufacturing Office: Compressed Air Systems  

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

training and other resources Training Calendar Events Calendar Tools Tools to Assess Your Energy System AIRMaster+ Tool Scorecards and Simple Calculators Compressed Air Scorecard...

84

Single-Duct Constant Air Volume System Supply Air Temperature Reset: Using Return Air Temperature or Outside Air Temperature?  

E-Print Network (OSTI)

The supply air temperature set point for a singleduct constant air volume air handling unit (AHU) system is often reset based on either return air temperature or outside air temperature in order to reduce simultaneous cooling and heating energy consumption. Both reset strategies make engineering sense as long as the reset schedules are reasonable. Quite often the decision to use one over the other is made with the assumption that they will all achieve some sorts of energy savings. However, the impact of these two strategies on AHU energy consumption could be very different. A comparison of these two commonly used supply air temperature reset strategies for a single-duct constant air volume system is presented in this paper. It is shown that from either the building energy consumption or building comfort point of view, the reset strategy based on outside air temperature is inherently better than that based on return air temperature. Significant amount of heating energy savings can be achieved by switching from return air temperature based reset to outside air temperature based reset. The reset strategy can also benefit variable air volume (VAV) AHUs. An improved supply air temperature set point reset control strategy is proposed by combining and staging the outside air and return air temperature based resets.

Wei, G.; Turner, W. D.; Claridge, D.; Liu, M.

2002-01-01T23:59:59.000Z

85

Ameresco and Hill Air Force Base: SPP Success Story | ENERGY STAR Buildings  

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

Hill Air Force Base: SPP Success Story Hill Air Force Base: SPP Success Story Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources Success stories

86

Rooftop Unitary Air Conditioner with Integral Dedicated Outdoor Air System  

SciTech Connect

Energy use of rooftop and other unitary air-conditioners in commercial applications accounts for about 1 quad (10{sup 15} Btu) of primary energy use annually in the U.S. [Reference 7]. The realization that this cooling equipment accounts for the majority of commercial building cooled floorspace and the majority also of commercial building energy use has spurred development of improved-efficiency equipment as well as development of stricter standards addressing efficiency levels. Another key market driver affecting design of rooftop air-conditioning equipment has been concern regarding comfort and the control of humidity. Trends for increases in outdoor air ventilation rates in certain applications, and the increasing concern about indoor air quality problems associated with humidity levels and moisture in buildings points to a need for improved dehumidification capability in air-conditioning equipment of all types. In many cases addressing this issue exacerbates energy efficiency, and vice versa. The integrated dedicated outdoor air system configuration developed in this project addresses both energy and comfort/humidity issues.

Tiax Llc

2006-02-28T23:59:59.000Z

87

Tracking Hurricane Claudette with the U.S. Air Force Over-the-Horizon Radar  

Science Conference Proceedings (OSTI)

Hurricane Claudette was successfully tracked for three days using the 2-s (7 m) surface wave direction field mapped by the U.S. Air Force OTH-B over-the-horizon radar 2400 km away on the coast of Maine. Inflow and fine structure of the surface ...

T. M. Georges; J. A. Harlan; L. R. Meyer; R. G. Peer

1993-08-01T23:59:59.000Z

88

A Description of the Air Force Real-Time Nephanalysis Model  

Science Conference Proceedings (OSTI)

The Air Force Global Weather Central (AFGWC) Real-Time Nephanalysis (RTNEPH) is an automated cloud model that produces a 48-km gridded analysis of cloud amount, cloud type, and cloud height. Its primary input is imagery from polar-orbiting ...

Thomas M. Hamill; Robert P. D'Entremont; James T. Buntin

1992-06-01T23:59:59.000Z

89

Presentation to the Atomic Energy Commission and the Air Force, June 14, 1962  

SciTech Connect

This volume contains the charts and backup material presented to the Atomic Energy Commission and Air Force on June 14, 1962 concerning General Electric's Nuclear Materials and Propulsion Operation (formerly the Aircraft Nuclear Propulsion Department), during its work on the development of a nuclear power plant for manned aircraft.

1962-10-01T23:59:59.000Z

90

Economic analysis of coal-fired cogeneration plants for Air Force bases  

SciTech Connect

The Defense Appropriations Act of 1986 requires the Department of Defense to use an additional 1,600,000 tons/year of coal at their US facilities by 1995 and also states that the most economical fuel should be used at each facility. In a previous study of Air Force heating plants burning gas or oil, Oak Ridge National Laboratory found that only a small fraction of this target 1,600,000 tons/year could be achieved by converting the plants where coal is economically viable. To identify projects that would use greater amounts of coal, the economic benefits of installing coal-fired cogeneration plants at 7 candidate Air Force bases were examined in this study. A life-cycle cost analysis was performed that included two types of financing (Air Force and private) and three levels of energy escalation for a total of six economic scenarios. Hill, McGuire, and Plattsburgh Air Force Bases were identified as the facilities with the best potential for coal-fired cogeneration, but the actual cost savings will depend strongly on how the projects are financed and to a lesser extent on future energy escalation rates. 10 refs., 11 figs., 27 tabs.

Holcomb, R.S.; Griffin, F.P.

1990-10-01T23:59:59.000Z

91

DENSIFIED REFUSE DERIVED FUEL CO-FIRING EXPERIENCE IN U.S. AIR FORCE SPREADER STOKER BOILERS  

E-Print Network (OSTI)

DENSIFIED REFUSE DERIVED FUEL CO-FIRING EXPERIENCE IN U.S. AIR FORCE SPREADER STOKER BOILERS ALFRED and Services Center Tyndall AFB, Florida ABSTRACT The thermal and environmental performance of co firing 1982, the U.S. Air Force co-fired densified refuse-derived-fuel (dRDF) with coal in two types

Columbia University

92

Troubleshooting the residential air conditioning system  

Science Conference Proceedings (OSTI)

In order to effectively diagnose problems in a residential air conditioning system, the technician should develop and follow a logical step-by-step troubleshooting procedure. A list of problems, along with possible causes and solutions, that a technician may encounter when servicing a residential air conditioner is presented.

Puzio, H. [Sussex County Vocational Technical School, Sparta, NJ (United States)

1996-01-01T23:59:59.000Z

93

(Environmental investigation of ground water contamination at Wright- Patterson Air Force Base, Ohio)  

SciTech Connect

This Health and Safety Plan (HSP) was developed for the Environmental Investigation of Ground-water Contamination Investigation at Wright-Patterson Air Force Base near Dayton, Ohio, based on the projected scope of work for the Phase 1, Task 4 Field Investigation. The HSP describes hazards that may be encountered during the investigation, assesses the hazards, and indicates what type of personal protective equipment is to be used for each task performed. The HSP also addresses the medical monitoring program, decontamination procedures, air monitoring, training, site control, accident prevention, and emergency response.

Not Available

1991-10-01T23:59:59.000Z

94

Numerical Analysis of a Cold Air Distribution System  

E-Print Network (OSTI)

Cold air distribution systems may reduce the operating energy consumption of air-conditioned air supply system and improve the outside air volume percentages and indoor air quality. However, indoor temperature patterns and velocity field are easily non-uniform so that residents usually feel uncomfortable. The distribution of indoor airflow by cold air distribution is researched in this paper. We study indoor air distribution under different low temperature air supply conditions by numerical simulation. The simulated results agree well with the experiments.

Zhu, L.; Li, R.; Yuan, D.

2006-01-01T23:59:59.000Z

95

(Environmental investigation of ground water contamination at Wright-Patterson Air Force Base, Ohio)  

Science Conference Proceedings (OSTI)

In April 1990, Wright-Patterson Air Force Base (WPAFB) initiated an effort for the evaluation of potential removal of ground water contamination at the Base. This report presents a current assessment of the nature and extent of the contamination believed to be migrating across the southwestern boundary of Area C and the northern boundary of Area B based upon analysis of existing environmental data obtained from several sources. The existing data base indicates widespread, low-level contamination moving across Base boundaries at levels that pose no immediate threat to the Mad River Valley well fields. An investigation by the City of Dayton in May and June 1990, however, implies that a more identifiable plume of PCE and TCE may be crossing the southwestern boundary of Area C immediately downgradient of Landfill 5. More data is needed to delineate ground water contamination and to design and implement a suitable control system. This report concludes that although an extensive study of the boundaries in question would be the preferred approach, a limited, focused investigation and subsequent feasibility study can be accomplished with a reasonable certainty of achieving the desired outcome of this project.

Not Available

1991-10-01T23:59:59.000Z

96

Energy Efficiency in Compressed Air Systems  

E-Print Network (OSTI)

Energy use in compressed air systems accounts for typically 10% of the total industrial electricity consumption. It also accounts for close to 99% of the CO2 footprint of an air compressor and approximately 80% of the life cycle costs of a compressor, over its lifetime. Considering these facts, it is sometimes surprising to see the lack of attention to compressed air systems in industry. This paper attempts to create awareness as to how a great deal of energy can be saved through a conscious process of selection and use of compressed air systems, bringing substantial benefits in economics and the environment. It also attempts to highlight the relative importance of energy savings over the costs of investments made in energy saving features and processes.

Hingorani, A.; Pavlov, A.

2010-01-01T23:59:59.000Z

97

Investigation of Feasibility of All-Fresh Air Supply in an All-Air System  

E-Print Network (OSTI)

The feasibility of an all-fresh air supply in an all-air system is investigated in theory, and the problem of AHU-handling air in low efficiency in summer and winter conditions is analyzed. The air supply temperature is almost up to standards when a heat recovery unit is fixed in the air conditioning system.

Wang, J.; Yan, Z.

2006-01-01T23:59:59.000Z

98

Geothermal exploration program, Hill Air Force Base, Davis and Weber Counties, Utah  

DOE Green Energy (OSTI)

Results obtained from a program designed to locate a low- or moderate-temperature geothermal resource that might exist beneath Hill Air Force Base (AFB), Ogden, Utah are discussed. A phased exploration program was conducted at Hill AFB. Published geological, geochemical, and geophysical reports on the area were examined, regional exploration was conducted, and two thermal gradient holes were drilled. This program demonstrated that thermal waters are not present in the shallow subsurface at this site. (MHR)

Glenn, W.E.; Chapman, D.S.; Foley, D.; Capuano, R.M.; Cole, D.; Sibbett, B.; Ward, S.H.

1980-03-01T23:59:59.000Z

99

Energy efficiency improvements in Chinese compressed air systems  

E-Print Network (OSTI)

air system assessments and energy audits based on a systemaudit. These compressed air system assessments may be conducted by compressor manufacturers/distributors or energy

McKane, Aimee; Li, Li; Li, Yuqi; Taranto, T.

2008-01-01T23:59:59.000Z

100

Shemya Air Force Base, Alaska No Further Action Decision document for Hg-1. Final report  

SciTech Connect

This document is being prepared to document that a No Further Action Decision (NFAD) document is appropriate for the Hg-1 site at Shemya Air Force Base (AFB), Alaska, under the Air Force Installation Restoration Program (IRP). The IRP is a Department of Defense (DOD) program established to identify and remediate hazardous waste problems on DOD property that result from past practices. The Alaska Department of Environmental Conservation (ADEC) draft document {open_quotes}No Further Action Criteria for DOD Military/FUD Sites{close_quotes} has been used as a guide in preparing this document. Air Force personnel have stated that the Hg-1 site may have been used to store mercury and PCB-contaminated material. The site was added to the IRP in 1987, and later that year a field investigation was conducted at the site. Soil samples were collected and analyzed for mercury, EP toxicity, polychlorinated biphenyls (PCBs), and dioxin. All concentrations of contaminants found in Area Hg-1 are below regulatory action levels for PCBs (40 CFR 761) and mercury (55 FR 30798) or below detection levels for dioxin/furans. Therefore, leaving these soils in place is acceptable.

1993-03-05T23:59:59.000Z

Note: This page contains sample records for the topic "forced air system" 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

Field Measurements of Heating Efficiency of Electric Forced-Air Furnaces in Six Manufactured Homes.  

Science Conference Proceedings (OSTI)

This report presents the results of field measurements of heating efficiency for six manufactured homes in the Pacific Northwest heated with electric forced-air systems. This is the first in a series of regional and national efforts to measure in detail the heating efficiency of manufactured homes. Only six homes were included in this study because of budgetary constraints; therefore this is not a representative sample. These investigations do provide some useful information on the heating efficiency of these homes. Useful comparisons can be drawn between these study homes and site-built heating efficiencies measured with a similar protocol. The protocol used to test these homes is very similar to another Ecotope protocol used in the study conducted in 1992 and 1993 for the Bonneville Power Administration to test the heating efficiency of 24 homes. This protocol combined real-time power measurements of furnace energy usage with energy usage during co-heat periods. Accessory data such as house and duct tightness measurements and tracer gas measurements were used to describe these homes and their heating system efficiency. Ensuring that manufactured housing is constructed in an energy and resource efficient manner is of increasing concern to manufactured home builders and consumers. No comparable work has been done to measure the heating system efficiency of MCS manufactured homes, although some co-heat tests have been performed on manufactured homes heated with natural gas to validate HUD thermal standards. It is expected that later in 1994 more research of this kind will be conducted, and perhaps a less costly and less time-consuming method for testing efficiencies will be develops.

Davis, Bob; Palmiter, Larry S.; Siegel, Jeff

1994-07-26T23:59:59.000Z

102

Source evaluation report phase 2 investigation: Limited field investigation. Final report: United States Air Force Environmental Restoration Program, Eielson Air Force Base, Alaska  

SciTech Connect

This report describes the limited field investigation work done to address issues and answer unresolved questions regarding a collection of potential contaminant sources at Eielson Air Force Base (AFB), near Fairbanks, Alaska. These sources were listed in the Eielson AFB Federal Facility Agreement supporting the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) cleanup of the base. The limited field investigation began in 1993 to resolve all remaining technical issues and provide the data and analysis required to evaluate the environmental hazard associated with these sites. The objective of the limited field investigation was to allow the remedial project managers to sort each site into one of three categories: requiring remedial investigation/feasibility study, requiring interim removal action, or requiring no further remedial action.

Not Available

1994-10-01T23:59:59.000Z

103

Air Products Hydrogen Energy Systems  

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

Kiczek,Edward F. [KICZEKEF@airproducts.com] Kiczek,Edward F. [KICZEKEF@airproducts.com] Sent: Monday, April 18, 2011 7:40 PM To: Gopstein, Avi (S4) Subject: Hydrogen Infrastructure Latest Advancements Attachments: Air Products Written Comments to 2011 2012 AB118 Investment Plan.pdf Follow Up Flag: Follow up Flag Status: Flagged Categories: QTR Transparency Avi, You may recall we met in DC when the McKinsey team from Germany came to discuss the EU study on hydrogen infrastructure. At that time I mention a significant advance in infrastructure that would be announced soon. Attached is our testimony to the California Energy Commission on deploying that technology. We were awarded the project to build 9 stations in southern California with the backing of

104

Advanced Overfire Air system and design  

DOE Green Energy (OSTI)

The objective of the proposed project is to design, install and optimize a prototype advanced tangential OFA air system on two mass feed stoker boilers that can burn coal, biomass and a mixture of these fuels. The results will be used to develop a generalized methodology for retrofit designs and optimization of advanced OFA air systems. The advanced OFA system will reduce particulate and NOx emissions and improve overall efficiency by reducing carbon in the ash and excess oxygen. The advanced OFA will also provide capabilities for carrying full load and improved load following and transitional operations.

Gene berkau

2004-07-30T23:59:59.000Z

105

Improving Energy Efficiency of Compressed Air System Based on System Audit  

E-Print Network (OSTI)

can cover the maximum system demand. The similar successfulsized to meet the maximum plant air demand. Few air systems

Shanghai, Hongbo Qin; McKane, Aimee

2008-01-01T23:59:59.000Z

106

Improving Energy Efficiency of Compressed Air System Based on System Audit  

E-Print Network (OSTI)

50 compressed air system energy audits completed by Shanghai50 compressed air system energy audits completed by Shanghaiof compressed air energy audits conducted by the Shanghai

Shanghai, Hongbo Qin; McKane, Aimee

2008-01-01T23:59:59.000Z

107

U.S. - Canada Power System Outage Task Force: Final Report on...  

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

- Canada Power System Outage Task Force: Final Report on the Implementation of Task Force Recommendations U.S. - Canada Power System Outage Task Force: Final Report on the...

108

American Recovery and Reinvestment Act (ARRA) Federal Energy Management Program Technical Assistance Project 224 Altus Air Force Base Solar Technologies  

DOE Green Energy (OSTI)

The principal goal of this project was to evaluate altus Air Force Base for building integrated silicon or thin film module photovoltaic opportunities. This report documents PNNL's efforts and documents study conclusions.

Russo, Bryan J.

2010-09-30T23:59:59.000Z

109

Optimal control of a bleed air temperature regulation system.  

E-Print Network (OSTI)

??This thesis investigates temperature control of an aircraft engine bleed air system, aiming at reducing ram air usage to reduce fuel consumption while maintaining fast (more)

Shang, Lan

2007-01-01T23:59:59.000Z

110

Transfer of Air Force technical procurement bid set data to small businesses, using CALS and EDI. Summary report. Revision 1  

Science Conference Proceedings (OSTI)

This report provides a summary of the Air Force CALS Test Network (AFCTN) Test Report Transfer of Air Force Technical Procurement Bid Set Data to Small Businesses, Using CALS and EDI (AFCTN Test Report 94-034, UCRL-ID-118619). It represents a synthesis of the results, conclusions, and recommendations, as well as a more concise presentation of the issues and strategies as viewed from AFCTN`s perspective. This report documents a test transfer of three Air Force technical procurement bid sets to one large and twelve small businesses, using the Department of Defense (DoD) Continuous Acquisition and Life-cycle Support (CALS) and ANSI ASC X12 Electronic Data Interchange (EDI) standards. The main goal of the test was to evaluate the effectiveness of using CALS technical data within the context of the DoD`s EDI-based standard approach to electronic commerce in procurement, with particular emphasis on receipt and use of the data by small contractors. Air Force procurement data was provided by the Sacramento Air Logistics Center at McClellan Air Force Base; the manufacturing participants were selected from among McClellan`s {open_quote}Blue Ribbon{close_quote} contractors, located throughout the United States. The test was sponsored by the Air Force CALS Test Network, headquartered at Wright-Patterson Air Force Base. The test successfully demonstrated the technical feasibility of including CALS MIL-R-28002 (Raster) engineering data in an EDI Specification/Technical Information transaction set (ANSI ASC X12 841) when issuing electronic requests for quotation to small businesses. In many cases, the data was complete enough for the contractor participant to feel comfortable generating a quote.

NONE

1995-01-10T23:59:59.000Z

111

Patrick Air Force Base integrated resource assessment. Volume 2, Baseline detail  

SciTech Connect

The US Air Force has tasked the Pacific Northwest Laboratory (PNL), in support of the US Department of Energy (DOE) Federal Energy Management Program (FEMP), to assess energy use at Patrick Air Force Base (AFB). The information obtained from this assessment will be used in identifying energy resource opportunities to reduce overall energy consumption on the base. The primary focus of this report is to assess the current baseline energy consumption at Patrick AFB. It is a comparison report to Volume 1, the Executive Summary, and Volume 3, the Resource Assessment. This assessment requires that information be obtained and characterized for buildings, utilities, energy sources, energy uses, and load profile information to be used to improve the characterization of energy use on the base. The characteristics of electricity, natural gas, and No. 2 fuel oil are analyzed for on-base facilities and housing. The assessment examines basic regional information used to determine energy-use intensity (EUI) values for Patrick AFB facilities by building, fuel type, and energy end use. It also provides a summary of electricity consumption from Florida Power and Light Company (FPL) metered data for 1985-1991. Load profile information obtained from FPL data is presented for the north and south substations for the four seasons of the year, including weekdays and weekends.

Wahlstrom, R.R.; King, D.A.; Parker, S.A.; Sandusky, W.F.

1993-08-01T23:59:59.000Z

112

Robins Air Force Base integrated resource assessment. Volume 3, Resource assessment  

SciTech Connect

The US Air Force Materiel Command (AFMC) has tasked the US Department of Energy (DOE) Federal Energy Management Program (FEMP), supported by the Pacific Northwest Laboratory (PNL), to identify, evaluate, and assist in acquiring all cost-effective energy projects at Robins Air Force Base (AFB). This is part of a model program that PNL is designing to support energy-use decisions in the federal sector. This report provides the results of the fossil fuel and electric energy resource opportunity (ERO) assessments performed by PNL at the AFMC Robins AFB facility located approximately 15 miles south of Macon, Georgia. It is a companion report to Volume 1, Executive Summary, and Volume 2, Baseline Detail. The results of the analyses of EROs are presented in 13 common energy end-use categories (e.g., boilers and furnaces, service hot water, and building lighting). A narrative-description of each ERO is provided, including information on the installed cost, energy and dollar savings; impacts on operation and maintenance (O&M); and, when applicable, a discussion of energy supply and demand, energy security, and environmental issues. A description of the evaluation methodologies and technical and cost assumptions is also provided for each ERO. Summary tables present the cost-effectiveness of energy end-use equipment before and after the implementation of each ERO and present the results of the life-cycle cost (LCC) analysis indicating the net present value (NPV) and savings to investment ratio (SIR) of each ERO.

Sullivan, G.P.; Keller, J.M.; Stucky, D.J.; Wahlstrom, R.R.; Larson, L.L.

1993-10-01T23:59:59.000Z

113

Operable Unit 1 remedial investigation report, Eielson Air Force Base, Alaska  

Science Conference Proceedings (OSTI)

This remedial investigation report for operable Unit 1 (OU-1) at Eielson Air Force Base presents data, calculations, and conclusions as to the nature and extent of surface and subsurface contamination at the eight source areas that make up OU-1. The information is based on the 1993 field investigation result and previous investigations. This report is the first in a set of three for OU-1. The other reports are the baseline risk assessment and feasibility study. The information in these reports will lead to a Record of Decision that will guide and conclude the environmental restoration effort for OU-1 at Eielson Air Force Base. The primary contaminants of concern include fuels and fuel-related contaminants (diesel; benzene, toluene, ethylbenzene, and xylene; total petroleum hydrocarbon; polycyclic aromatic hydrocarbons), maintenance-related solvents and cleaners (volatile chlorinated hydrocarbons such as trichloroothylene), polychlorinated biphenyls, and dichlorodiphenyltrichloroethane (DDT). The origins of contaminants of concern include leaks from storage tanks, drums and piping, and spills. Ongoing operations and past sitewide practices also contribute to contaminants of concern at OU-1 source areas. These include spraying mixed oil and solvent wastes on unpaved roads and aerial spraying of DDT.

Gilmore, T.J.; Fruland, R.M.; Liikala, T.L. [and others

1994-06-01T23:59:59.000Z

114

Griffiss Air Force Base integrated resource assessment. Volume 3, Electric resource assessment  

Science Conference Proceedings (OSTI)

The US Air Force Air Combat Command (ACC) has tasked the US Department of Energy (DOE) Federal Energy Management Program (FEMP) to identify, evaluate, and assist in acquiring all cost-effective energy projects at Griffiss Air Force Base (AFB). FEMP, with support from the Pacific Northwest Laboratory (PNL), is designing this model program for federal customers served by the Niagara Mohawk Power Company. The program with Griffiss AFB will (1) identify and evaluate all cost-effective electric energy projects; (2) develop a schedule for project acquisition considering project type, size, timing, capital requirements, as well as energy and dollar savings; and (3) secure 100% of the financing required to implement electric energy efficiency projects from Niagara Mohawk and have them procure the necessary contractors to perform detailed audits and install the technologies. This report provides the results of the electric energy resource opportunity (ERO) assessments performed by PNL at one of Niagara Mohawk`s primary federal facilities, the ACC Griffiss AFB facility located near Rome, New York. The results of the analyses of EROs are presented in seven common energy end-use categories. A narrative description of each ERO provides information on the initial cost, energy and dollar savings; impacts on operations and maintenance (O&M); and, when applicable, a discussion of energy supply and demand, energy security, and environmental issues. The evaluation methodology and technical and cost assumptions are also described for each ERO. Summary tables present the operational performance of energy end-use equipment before and after the implementation of each ERO and the results of the life-cycle cost analysis indicating the net present value (NPV) and savings-to-investment ratio (SIR) of each ERO.

Armstrong, P.R.; Shankle, S.A.; Elliott, D.B.; Stucky, D.J.; Keller, J.M.; Wahlstrom, R.R.; Dagle, J.E.; Gu, A.Y.

1993-09-01T23:59:59.000Z

115

Model for determining modular heat recovery incinerator feasibility on air force installations. Master's thesis  

Science Conference Proceedings (OSTI)

This study constructed a model to determine the feasibility of building municipal solid waste (MSW) fired modular heat recovery incinerators (HRIs) on Air Force installations. The model consisted of three gates. Gate one identified current federal regulatory air emission requirements for various HRI pollutants. It also specified two air pollution control configurations with emission reduction efficiencies capable of achieving these requirements. Gate two presented a life-cycle cost (LCC) economic analysis methodology. Operational and cost data for existing modular HRIs located in the United States facilitated the development of regression equations that estimate capital and annual operating costs for a modular HRI. Actual cost and operational information from a central heating plant at Wright-Patterson AFB, along with cost data from the regression equations, provided the basis for an example LCC analysis involving modular HRIs Results of this hypothetical evaluation showed that the LCC for the modular HRI alternatives were both less than the LCC of replacing the existing boiler. Gate three presented a Likert-scale survey to evaluate the sociopolitical acceptability of the proposed HRI. The survey results indicate the level of effort to process the HRI proposal in accordance with the National Environmental Policy Act. Heat recovery, Incinerators, Waste management, Waste treatment.

Anderson, A.H.; Munnell, P.R.

1992-09-01T23:59:59.000Z

116

Climate System Response to External Forcings and Climate Change...  

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

Climate System Response to External Forcings and Climate Change Projections in CCSM4 Submitted by mkaczmar on March 8, 2012 - 11:03 Authors: Meehl, G.A., Washington, WM, Arblaster,...

117

Neural network control for an intelligent air handler in an air-conditioning system.  

E-Print Network (OSTI)

??Many commercial air-conditioning systems in hot and humid areas like Singapore are operated throughout the year. There are two main classifications for these systems: the (more)

Zhang, Qi.

2008-01-01T23:59:59.000Z

118

Comprehensive Energy Program at Patrick Air Force Base Set to Exceed Energy Goals  

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

Bringing you a prosperous future where energy Bringing you a prosperous future where energy is clean, abundant, reliable, and affordable Case Study Case Study Federal Energy Management Program Federal Energy Management Program Leading by example, saving energy and taxpayer dollars in federal facilities The 45 th Space Wing at Patrick Air Force Base (PAFB) is pursuing its energy goals through a partnership with Florida Power & Light (FPL). At the request of PAFB, FPL developed a base-wide comprehensive energy program that charts a course for improving the base's energy efficiency in five phased projects and demonstrates that PAFB can exceed their federal goals for reducing energy use by 2015. The base, stretching along four miles of Florida's east coast south of Kennedy Space Center, is home to the 45

119

Comprehensive Energy Program at Patrick Air Force Base Set to Exceed Energy Goals  

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

energy energy is clean, abundant, reliable, and affordable Case Study Case Study Federal Energy Management Program Federal Energy Management Program Leading by example, saving energy and taxpayer dollars in federal facilities The 45 th Space Wing at Patrick Air Force Base (PAFB) is pursuing its energy goals through a partnership with Florida Power & Light (FPL). At the request of PAFB, FPL developed a base-wide comprehensive energy program that charts a course for improving the base's energy efficiency in five phased projects and demonstrates that PAFB can exceed their federal goals for reducing energy use by 2015. The base, stretching along four miles of Florida's east coast south of Kennedy Space Center, is home to the 45 th Space Wing and more than 35

120

Development of residential-conservation-survey methodology for the US Air Force. Interim report. Task two  

DOE Green Energy (OSTI)

A US Air Force (USAF) Residential Energy Conservation Methodology was developed to compare USAF needs and available data to the procedures of the Residential Conservation Service (RCS) program as developed for general use by utility companies serving civilian customers. Attention was given to the data implications related to group housing, climatic data requirements, life-cycle cost analysis, energy saving modifications beyond those covered by RCS, and methods for utilizing existing energy consumption data in approaching the USAF survey program. Detailed information and summaries are given on the five subtasks of the program. Energy conservation alternatives are listed and the basic analysis techniques to be used in evaluating their thermal performane are described. (MCW)

Abrams, D. W.; Hartman, T. L.; Lau, A. S.

1981-11-13T23:59:59.000Z

Note: This page contains sample records for the topic "forced air system" 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

Eielson Air Force Base operable unit 2 and other areas record of decision  

SciTech Connect

This decision document presents the selected remedial actions and no action decisions for Operable Unit 2 (OU2) at Eielson Air Force Base (AFB), Alaska, chosen in accordance with state and federal regulations. This document also presents the decision that no further action is required for 21 other source areas at Eielson AFB. This decision is based on the administrative record file for this site. OU2 addresses sites contaminated by leaks and spills of fuels. Soils contaminated with petroleum products occur at or near the source of contamination. Contaminated subsurface soil and groundwater occur in plumes on the top of a shallow groundwater table that fluctuates seasonally. These sites pose a risk to human health and the environment because of ingestion, inhalation, and dermal contact with contaminated groundwater. The purpose of this response is to prevent current or future exposure to the contaminated groundwater, to reduce further contaminant migration into the groundwater, and to remediate groundwater.

Lewis, R.E.; Smith, R.M.

1994-10-01T23:59:59.000Z

122

Indoor Air Quality Impacts of Residential HVAC Systems ...  

Science Conference Proceedings (OSTI)

Page 1. NISTIR 5559 Indoor Air Quality Impacts of Residential HVAC Systems Phase 11.AReport: Baseline and Preliminary Simulations ...

1997-09-03T23:59:59.000Z

123

Vandenberg Air Force Base integrated resource assessment. Volume 2, Baseline detail  

SciTech Connect

The US Air Force Space Command has tasked the Pacific Northwest Laboratory, as the lead laboratory supporting the US Department of Energy Federal Energy Management Program, to identify, evaluate, and assist in acquiring all cost-effective energy projects at Vandenberg Air Force Base (VAFB). This is a model program PNL is designing for federal customers served by the Pacific Gas and Electric Company (PG and E). The primary goal of the VAFB project is to identify all electric energy efficiency opportunities, and to negotiate with PG and E to acquire those resources through a customized demand-side management program for its federal clients. That customized program should have three major characteristics: (1) 100% up-front financing; (2) substantial utility cost-sharing; and (3) utility implementation through energy service companies under contract to the utility. A similar arrangement will be pursued with Southern California Gas for non-electric resource opportunities if that is deemed desirable by the site and if the gas utility seems open to such an approach. This report documents the assessment of baseline energy use at VAFB located near Lompoc, California. It is a companion report to Volume 1, Executive Summary, and Volume 3, Resource Assessment. This analysis examines the characteristics of electric, natural gas, fuel oil, and propane use for fiscal year 1991. It records energy-use intensities for the facilities at VAFB by building type and energy end use. It also breaks down building energy consumption by fuel type, energy end use, and building type. A more complete energy consumption reconciliation is presented that includes the accounting of all energy use among buildings, utilities, and applicable losses.

Halverson, M.A.; Richman, E.E.; Dagle, J.E.; Hickman, B.J.; Daellenbach, K.K.; Sullivan, G.P.

1993-06-01T23:59:59.000Z

124

Vandenberg Air Force Base integrated resource assessment. Volume 3, Resource assessment  

SciTech Connect

The US Air Force Space Command (SPACECOM) has tasked the Pacific Northwest Laboratory (PNL), as the lead laboratory supporting the US Department of Energy (DOE) Federal Energy Management Program (FEMP), to identify, evaluate, and assist in acquiring all cost-effective energy projects at Vandenberg Air Force Base (VAFB). This is part of a model program that PNL is designing to support energy-use decisions in the federal sector. This report provides the results of the fossil fuel and electric energy resource opportunity (ERO) assessments performed by PNL at the SPACECOM VAFB facility located approximately 50 miles northwest of Santa Barbara, California. It is a companion report to Volume 1, Executive Summary, and Volume 2, Baseline Detail. The results of the analysis of EROs are presented in ten common energy end-use categories (e.g., boilers and furnaces, service hot water, and building lighting). In addition, a case study of process loads at Space Launch Complex-4 (SLC-4) is included. A narrative description of each ERO is provided, including information on the installed cost, energy and dollar savings; impacts on operation and maintenance (O and M); and, when applicable, a discussion of energy supply and demand, energy security, and environmental issues. A description of the evaluation methodologies and technical and cost assumptions is also provided for each ERO. Summary tables present the cost-effectiveness of energy end-use equipment before and after the implementation of each ERO and present the results of the life-cycle cost (LCC) analysis indicating the net present value (NPV) and value index (VI) of each ERO. Finally, an appendix includes a summary of an economic analysis case study of the South Vandenberg Power Plant (SVPP) operating scenarios.

Daellenbach, K.K.; Dagle, J.E.; Dittmer, A.L.; Elliott, D.B.; Halverson, M.A.; Hickman, B.J.; Parker, G.B.; Richman, E.E.; Shankle, S.A.

1993-06-01T23:59:59.000Z

125

Cape Canaveral Air Force Station integrated resource assessment. Volume 3, Resource assessment  

Science Conference Proceedings (OSTI)

The U.S. Air Force (USAF) has tasked the Pacific Northwest Laboratory (PNL) in support of the U.S. Department of Energy (DOE) Federal Energy Management Program (FEMP), to identify, evaluate, and assist in acquiring all cost-effective energy projects at Cape Canaveral Air Force Station (AFS). Projects considered can be either in the form of energy management or energy conservation. The overall efforts of this task are based on a model program PNL is designing to support energy-use decisions in the federal sector. This report provides the results of the fossil fuel and electric energy resource opportunity (ERO) assessments performed by PNL at Cape Canaveral AFS, which is located approximately 10 miles north of Cocoa Beach, Florida. It is a companion report to Volume 1: Executive Summary and Volume 2: Baseline Detail. The results of the analyses of EROs are presented in 11 common energy end-use categories (e.g., boilers and furnaces, service hot water, and building lighting). A narrative description of each ERO is provided, including information on the installed cost, energy and dollar savings, impacts on operations and maintenance (O&M), and, when applicable, a discussion of energy supply and demand, energy security, and environmental issues. Descriptions of the evaluation methodologies and technical and cost assumptions are also provided for each ERO. Summary tables present the cost- effectiveness of energy end-use equipment before and after the implementation of each ERO and present the results of the life-cycle cost (LCC) analysis, indicating the net present value (NPV) and savings-to-investment ratio (SIR) of each ERO.

Sandusky, W.F.; Eichman, C.J.; King, D.A.; McMordie, K.L.; Parker, S.A.; Shankle, S.A.; Wahlstrom, R.R.

1994-03-01T23:59:59.000Z

126

Characterization of the Drag Force in an Air-Moderated Granular Bed  

E-Print Network (OSTI)

We measure the torque acting on a rod rotated perpendicular to its axis in a granular bed, through which an upflow of gas is utilized to tune the hydrostatic loading between grains. At low rotation rates the torque is independent of speed, but scales quadratically with rod-length and linearly with depth; the proportionality approaches zero linearly as the upflow of gas is increased towards a critical value above which the grains are fluidized. At high rotation rates the torque exhibits quadratic rate- dependence and scales as the rod's length to the 4th power. The torque has no dependence on either depth or airflow at these higher rates. A model used to describe the stopping force experienced by a projectile impacting a granular bed can be shown to predict these behaviors for our system's geometry, indicating that the same mechanics dictate both steady-state and transient drag forces in granular systems, regardless of geometry or material properties of the grains.

Theodore A Brzinski III; Douglas J Durian

2009-12-14T23:59:59.000Z

127

Force-Gradient Nested Multirate Methods for Hamiltonian System  

E-Print Network (OSTI)

Force-gradient decomposition methods are used to improve the energy preservation of symplectic schemes applied to Hamiltonian systems. If the potential is composed of different parts with strongly varying dynamics, this multirate potential can be exploited by coupling force-gradient decomposition methods with splitting techniques for multi-time scale problems to further increase the accuracy of the scheme and reduce the computational costs. In this paper, we derive novel force-gradient nested methods and test them numerically. Such methods can be used to increase the acceptance rate for the molecular dynamics step of the Hybrid Monte Carlo algorithm (HMC) and hence improve its computational efficiency.

Dmitry Shcherbakov; Matthias Ehrhardt; Michael Gnther; Michael Peardon

2013-12-11T23:59:59.000Z

128

Modeling and construction of a computer controlled air conditioning system.  

E-Print Network (OSTI)

??As energy efficient devices become more necessary, it is desired to increase the efficiency of air conditioning systems. Current systems use on/off control, where the (more)

Frink, Brandon S.

2007-01-01T23:59:59.000Z

129

Systematic method for the condition assessment of central heating plants in Air Force Logistics Command. Master's thesis  

Science Conference Proceedings (OSTI)

Air Force Logistics Command (AFLC), facing decreasing funds and aging utility systems, needed a method to objectively rate its central heating plants. Such a rating system would be used to compare heating plants throughout the command to identify potential problem areas and prioritize major repair projects. This thesis used a Delphi questionnaire to gather opinions from heating plant experts in order to identify and prioritize components considered most critical to overall plant operation. In addition, the experts suggested measurements which could be used to evaluate component conditions. By combining expert opinions and reading from technical literature, component model rating schemes were developed for AFLC's steam and high temperature hot water plants. Based on measurements and observations of critical components in the plant, a score between 0 and 100 is assigned to each component (for example, condensate piping, deaerator, etc.), each plant subsystem (distribution system, water treatment system, etc.), and to the plant as a whole. These component model rating schemes and the resultant overall condition index scores will enable AFLC to focus their management attention and allocate needed resources to the plants in greatest need of repair.

Starmack, G.J.

1990-09-01T23:59:59.000Z

130

Solar air heating system for combined DHW and space heating  

E-Print Network (OSTI)

Solar air heating system for combined DHW and space heating solar air collector PV-panel fannon-return valve DHW tank mantle cold waterhot water roof Solar Energy Centre Denmark Danish Technological Institute SEC-R-29 #12;Solar air heating system for combined DHW and space heating Søren ?stergaard Jensen

131

The Feasibility Analysis of a New Air-Conditioning System  

Science Conference Proceedings (OSTI)

This paper presents a new modular solar refrigeration and liquid desiccant air conditioning system composed by adsorption refrigeration system, liquid desiccant system and roof cold radiation. The feasibility and beneficial of this new system are analyzed ... Keywords: liquid desiccant, modular solar refrigeration, new air conditioning system, roof cold radiation, technical and economic feasibility analysis

Jinggang Wang; Meixia Du; Xiaoxia Gao; Jin Zhao; Zhenjiang Yin; Yi Man

2009-12-01T23:59:59.000Z

132

Subsonic Tests of a Flush Air Data Sensing System Applied to a Fixed-Wing Micro Air Vehicle  

Science Conference Proceedings (OSTI)

Flush air data sensing (FADS) systems have been successfully tested on the nose tip of large manned/unmanned air vehicles. In this paper we investigate the application of a FADS system on the wing leading edge of a micro (unmanned) air vehicle (MAV) ... Keywords: Extended minimum resource allocating neural networks, Fault accommodation, Flush air data sensing systems, Micro (unmanned) air vehicle

Ihab Samy; Ian Postlethwaite; Dawei Gu

2009-03-01T23:59:59.000Z

133

DESIGN AND CONSTRUCTION OF A FORCE-REFLECTING TELEOPERATION SYSTEM  

Science Conference Proceedings (OSTI)

For certain applications, such as space servicing, undersea operations, and hazardous material handling tasks in nuclear reactors, the environments can be uncertain, complex, and hazardous. Lives may be in danger if humans were to work under these conditions. As a result, a man-machine system--a teleoperator system--has been developed to work in these types of environments. In a typical teleoperator system, the actual system operates at a remote site; the operator located away from this system usually receives visual information from a video image and/or graphical animation on the computer screen. Additional feedback, such as aural and force information, can significantly enhance performance of the system. Force reflection is a type of feedback in which forces experienced by the remote manipulator are fed back to the manual controller. Various control methods have been proposed for implementation on a teleoperator system. In order to examine different control schemes, a one Degree-Of-Freedom (DOF) Force-Reflecting Manual Controller (FRMC) is constructed and integrated into a PC. The system parameters are identified and constructed as a mathematical model. The Proportional-Integral-Derivative (PID) and fuzzy logic controllers are developed and tested experimentally. Numerical simulation results obtained from the mathematical model are compared with those of experimental data for both types of controllers. In addition, the concept of a telesensation system is introduced. A telesensation system is an advanced teleoperator system that attempts to provide the operator with sensory feedback. In this context, a telesensation system integrates the use of a Virtual Reality (VR) unit, FRMC, and Graphical User Interface (GUI). The VR unit is used to provide the operator with a 3-D visual effect. Various commercial VR units are reviewed and features compared for use in a telesensation system. As for the FRMC, the conceptual design of a 3-DOF FRMC is developed in an effort to make the system portable, compact, and lightweight. A variety of design alternatives are presented and evaluated. Finally, a GUI software package is developed to interface with several teleoperation unit components. These components include an industrial robot, electric motor, encoder, force/torque sensor, and CCD camera. The software includes features such as position scaling, force scaling, and rereferencing and is intended to provide a sound basis for the development of a multi-DOF FRMC system in the future.

M.A. Ebadian, Ph.D.

1999-01-01T23:59:59.000Z

134

The Impact of Forced Air System Blowers on Furnace Performance...  

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

Canadian provinces and part owner of UNIES Ltd., an engineering firm in Winnipeg, Manitoba (60 miles straight north of the North DakotaMinnesota border). He does research and...

135

Residential Forced Air System Cabinet Leakage and Blower Performance  

E-Print Network (OSTI)

2008?004?CMF. CaliforniaEnergy Commission,Sacramento,2008?002?CMF. CaliforniaEnergyCommission, Sacramento,wassupportedbytheCaliforniaEnergyCommission Public

Walker, Iain S.

2010-01-01T23:59:59.000Z

136

Register Closing Effects on Forced Air Heating System Performance  

E-Print Network (OSTI)

with gypsum wallboard and plywood, with carefully tapedenvelope and covered using plywood plates as illustrated in

Walker, Iain S.

2003-01-01T23:59:59.000Z

137

Residential Forced Air System Cabinet Leakage and Blower Performance  

E-Print Network (OSTI)

ductleakagetesting. ASHRAETransactions,June2008. ASHRAE,Atlanta,GA. LBNL62262. Walker,I.S. (Institute,Arlington,VA. ASHRAEStandard103. (2007).

Walker, Iain S.

2010-01-01T23:59:59.000Z

138

The effects of aircraft noise at Williams Air Force Base Auxiliary Field on residential property values  

Science Conference Proceedings (OSTI)

This report considers the environmental consequences of moving the flight training operations of the US Air Force's 82nd Flying Training Wing from the auxiliary airfield, Coolidge-Florence Municipal Airport (CFMA), to a more remote location in Pinal County, Arizona. It examines how actual noise from touch-and-go flights of T-37 aircraft and perceived (anticipated) noise affect the market value of residential property near CFMA. Noise, measured by a noise index, is correlated with market values through a regression analysis applied to a hedonic price model of the Coolidge-Florence housing market. Prices and characteristics of 42 residential properties sold in 1987 and 1988 were used to estimate a perceived noise effect. The report finds that the coefficient on the measure of perceived noise, based on the noise exposure forecast (NEF) index, is statistically insignificant, even though the sign and value are consistent with those estimated in other studies. It concludes that current flights do not have a significant effect on residential property values, partially because there is no housing near CFMA. This and larger studies indicate that flight operations at a new auxiliary airfield would not affect property values if runways were at least 12,000 feet away from housing. 12 refs., 2 tabs.

Morey, M.J.

1990-11-01T23:59:59.000Z

139

Heating, ventilation and air conditioning systems  

DOE Green Energy (OSTI)

A study is made of several outstanding issues concerning the commercial development of environmental control systems for electric vehicles (EVs). Engineering design constraints such as federal regulations and consumer requirements are first identified. Next, heating and cooling loads in a sample automobile are calculated using a computer model available from the literature. The heating and cooling loads are then used as a basis for estimating the electrical consumption that is to be expected for heat pumps installed in EVs. The heat pump performance is evaluated using an automobile heat pump computer model which has been developed recently at Oak Ridge National Laboratory (ORNL). The heat pump design used as input to the model consists of typical finned-tube heat exchangers and a hermetic compressor driven by a variable-speed brushless dc motor. The simulations suggest that to attain reasonable system efficiencies, the interior heat exchangers that are currently installed as automobile air conditioning will need to be enlarged. Regarding the thermal envelope of the automobile itself, calculations are made which show that considerable energy savings will result if steps are taken to reduce {open_quote}hot soak{close_quote} temperatures and if the outdoor air ventilation rate is well controlled. When these changes are made, heating and cooling should consume less than 10% of the total stored electrical energy for steady driving in most U.S. climates. However, this result depends strongly upon the type of driving: The fraction of total power for heating and cooling ({open_quote}range penalty{close_quote}) increases sharply for driving scenarios having low average propulsion power, such as stop-and-go driving.

Kyle, D.M. [Oak Ridge National Lab., TN (United States); Sullivan, R.A. [Dept. of Energy, Washington, DC (United States)

1993-02-01T23:59:59.000Z

140

Using Modelica for Physical Modeling of Air-Conditioning Systems  

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

Using Modelica for Physical Modeling of Air-Conditioning Systems Using Modelica for Physical Modeling of Air-Conditioning Systems Speaker(s): Jonas Eborn Date: August 23, 2007 - 12:00pm Location: 90-4133 Seminar Host/Point of Contact: Michael Wetter The Air Conditioning library is a commercial Modelica library for the steady-state and transient simulation of air conditioning systems using both compact micro-channel heat exchangers as well as fin-and-tube type heat exchangers. Currently it is mostly used by automotive OEMs and suppliers that need high-accuracy system level models to evaluate energy efficiency of systems developed under the pressure of reduced design cycle times. The library also has applications in other areas, including aircraft cooling systems and residential air-conditioning. The Air Conditioning library contains published correlations for heat and mass transfer and

Note: This page contains sample records for the topic "forced air system" 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

Closed-loop air cooling system for a turbine engine  

DOE Patents (OSTI)

Method and apparatus are disclosed for providing a closed-loop air cooling system for a turbine engine. The method and apparatus provide for bleeding pressurized air from a gas turbine engine compressor for use in cooling the turbine components. The compressed air is cascaded through the various stages of the turbine. At each stage a portion of the compressed air is returned to the compressor where useful work is recovered.

North, William Edward (Winter Springs, FL)

2000-01-01T23:59:59.000Z

142

Innovative Systems for Solar Air Conditioning of Buildings  

E-Print Network (OSTI)

Solar air conditioning is an attractive technology to achieve comfortable room conditions, especially in hot and sunny climates. In particular air conditioning systems based on sorption technologies offer several advantages as they can be designed for a high efficient utilization of solar thermal energy. To show the today's and near future potential innovative solar cooling and air conditioning systems are discussed which are well adapted to the utilization of solar energy. The system performance of each air conditioning system is evaluated under Abu Dhabi design conditions.

Kessling, W.; Peltzer, M.

2004-01-01T23:59:59.000Z

143

Energy efficiency improvements in Chinese compressed air systems  

E-Print Network (OSTI)

Air Systems, Paper #071 Energy efficiency improvements into increase industrial energy efficiency. As a result, morein use. Over time, energy efficiency decreases and the cost

McKane, Aimee; Li, Li; Li, Yuqi; Taranto, T.

2008-01-01T23:59:59.000Z

144

Current Research on Building Energy Systems and Air Cleaning...  

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

Program Development Contact Us Department Contacts Media Contacts Current Research on Building Energy Systems and Air Cleaning by Visible-Photocatalytic Oxidation (Visible-PCO)...

145

Using Modelica for Physical Modeling of Air-Conditioning Systems  

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

and ready-to-use models for all relevant components of automotive air conditioning systems like condenser, evaporator, compressor, expansion devices and accumulatorreceiver...

146

[Environmental investigation of ground water contamination at Wright-Patterson Air Force Base, Ohio]. Volume 1, Site assessment report  

SciTech Connect

In April 1990, Wright-Patterson Air Force Base (WPAFB) initiated an effort for the evaluation of potential removal of ground water contamination at the Base. This report presents a current assessment of the nature and extent of the contamination believed to be migrating across the southwestern boundary of Area C and the northern boundary of Area B based upon analysis of existing environmental data obtained from several sources. The existing data base indicates widespread, low-level contamination moving across Base boundaries at levels that pose no immediate threat to the Mad River Valley well fields. An investigation by the City of Dayton in May and June 1990, however, implies that a more identifiable plume of PCE and TCE may be crossing the southwestern boundary of Area C immediately downgradient of Landfill 5. More data is needed to delineate ground water contamination and to design and implement a suitable control system. This report concludes that although an extensive study of the boundaries in question would be the preferred approach, a limited, focused investigation and subsequent feasibility study can be accomplished with a reasonable certainty of achieving the desired outcome of this project.

Not Available

1991-10-01T23:59:59.000Z

147

Indoor Air Quality Primer for HVAC System Design  

Science Conference Proceedings (OSTI)

Heating, ventilating, and air conditioning (HVAC) systems are major energy users in commercial and institutional buildings. Increased ventilation for acceptable indoor air quality (IAQ), besides increasing energy use, may result in unacceptably high indoor humidity, particularly in humid climates and/or applications requiring high ventilation rates. This report analyzes how increased ventilation affects the dehumidification capabilities of air conditioning systems in three applications -- offices, retail...

2002-02-21T23:59:59.000Z

148

Air conditioning system with supplemental ice storing and cooling capacity  

DOE Patents (OSTI)

The present air conditioning system with ice storing and cooling capacity can generate and store ice in its pipe assembly or in an ice storage tank particularly equipped for the system, depending on the type of the air conditioning system. The system is characterized in particular in that ice can be produced and stored in the air conditioning system whereby the time of supplying cooled air can be effectively extended with the merit that the operation cycle of the on and off of the compressor can be prolonged, extending the operation lifespan of the compressor in one aspect. In another aspect, ice production and storage in great amount can be performed in an off-peak period of the electrical power consumption and the stored ice can be utilized in the peak period of the power consumption so as to provide supplemental cooling capacity for the compressor of the air conditioning system whereby the shift of peak and off-peak power consumption can be effected with ease. The present air conditioning system can lower the installation expense for an ice-storing air conditioning system and can also be applied to an old conventional air conditioning system.

Weng, Kuo-Lianq (Taichung, TW); Weng, Kuo-Liang (Taichung, TW)

1998-01-01T23:59:59.000Z

149

Conserve Energy by Optimizing Air Compressor System  

E-Print Network (OSTI)

There are many opportunities to conserve energy within an Industrial Plant without adversely impacting the operation or production. Many of these represent only relatively small savings, when compared to the overall utility bill; however, one major benefit of energy conservation is that the resultant savings in dollars goes directly to the bottom line as increased profits. To generate the same amount of profit dollars as an effective energy conservation project can generate, in cost avoidance, the plant would have to substantially increase the product shipments. This is not always possible; however, conserving energy is nearly always possible. How should one begin an energy conservation program within a major Industrial Plant? The same as any other taskone step at a time. This paper addresses one of the many small projects available within many industriesthe plant air compressing systems. It outlines how one industrial plant was able to reduce the utility bill by approximately $50,000 per year just within the compressor plant alone.

Williams, V. A.

1985-05-01T23:59:59.000Z

150

Direct Digital Control in Air Conditioning Systems for Energy Efficiency  

E-Print Network (OSTI)

With the rapid development of Intelligent Buildings (IB), the Building Automation System (BAS) has come to control and manage the equipment in the building more and more scientifically, economically and rationally, which can not only raise the function and the level of the building, but also save energy. At present, air-conditioning design in internal commercial buildings is becoming more complex and enormous. The proportion of air conditioning systems in the whole building is getting larger. In order to control and manage the air-conditioning systems effectively and take full use of energy-saving technology, we apply computer control to the system of air automation control. This paper discusses direct digital control (DDC) in the air conditioning system in buildings.

Liu, W.; Ye, A.; Li, D.

2006-01-01T23:59:59.000Z

151

Compressed Air Audits: A Holistic Approach -Addressing the Air System as a Whole  

E-Print Network (OSTI)

First, consider the Independent Auditor. Plant management should consider using an independent auditor without ties to equipment sales who has experience with a variety of manufacturing facilities and can provide strong references documenting proven energy savings. The quality and comprehensiveness of manufacturing facilities, and therefore audits, vary widely and it is important to consider experience. Compressed Air Technologies has audited nearly 200 manufacturing facilities since our inception in 1996. Compressed Air Technologies is the preferred air energy services provider for Georgia Pacific Corporation, INVISTA Chemicals and a primary energy partner with KRAFT Foods, among others. Compressed Air Technologies has no OEM affiliation of any kind and will provide recommendations that are system-neutral and commercially impartial. Compressed Air Technologies (CAT) is an international energy reduction and system optimization services corporation. CAT is a totally independent business structure with no ties or affiliations with any air compressor manufacturers -we are free of OEM restrictions. Our strict adherence to an independent approach related to compressed air and gas system assessments allows for unbiased commentary and recommendations, regardless of the brand or equipment type currently utilized in your plant. The majority of our competitors have either 1) equipment to sell and/or,2) existing equipment on the site to protect. In both situations, the interests of the client is not the paramount issue. Independent auditors should have no obvious or hidden agenda. CAT compressed air audit services are in essence, holistic. The analysis of your facility compressed air and gases systems is all-inclusive and consists of an engineered assessment beginning at the air compressor equipment area inside your facility and finishing at point-of-use consumption points. CAT engineers utilize a variety of instruments to collect data from all critical, relevant areas of the compressed air and gas systems. From air compressor blow off loss to the cost of the always present distribution/ piping system leaks, each individual loss or inefficiency is measured, analyzed, quantified and catalogued. CAT engineers then compile all of the collected data to create a total current profile report of your facility operations including an assigned cost to each discovered inefficiency. A typical audit results in identification of 25 to 60 percent or more in total system operational waste, which includes energy costs, maintenance costs, and all matters related to operating your compressed gas systems. It is not unusual to discover half of what you pay for compressed air operations is wasted due to inefficient utilization and operation of this important utility.

Shaver, D.

2011-01-01T23:59:59.000Z

152

Acceptance Test Report for 241-U compressed air system  

SciTech Connect

This Acceptance Test Report (ATR) documents the results of acceptance testing of a newly upgraded compressed air system at 241-U Farm. The system was installed and the test successfully performed under work package 2W-92-01027.

Freeman, R.D.

1994-10-20T23:59:59.000Z

153

Intelligent Control of Heating, Ventilating and Air Conditioning Systems  

Science Conference Proceedings (OSTI)

This paper proposed a simulation-optimization energy saving strategy for heating, ventilating and air conditioning (HVAC) systems' condenser water loop through intelligent control of single speed cooling towers' components. An analysis of system components ...

Patrick Low Kie; Lau Bee Theng

2009-07-01T23:59:59.000Z

154

Closure Report for Corrective Action Unit 486: Double Tracks RADSAFE Area Nellis Air Force Range, Nevada  

Science Conference Proceedings (OSTI)

The Double Tracks Radiological Safety Area (DTRSA), Corrective Action Unit (CAU) 486, was clean-closed following the approved Corrective Action Decision Document closure alternative and in accordance with the Federal Facility Agreement and Consent Order. The CAU consists of a single Corrective Action Site, 71-23-001-71DT. The DTRSA was used during May 1963 to decontaminate vehicles, equipment, personnel and animals from the Double Tracks Test. Double Tracks was one of four storage-transportation tests. The Double Tracks test was conducted in Stonewall Flat, approximately 32 kilometers (20 miles) east of Goldfield, Nevada, on the Nellis Air Force Range. The Double Tracks Test used a single device containing plutonium and depleted uranium and was designed to investigate the characteristics of plutonium-bearing particulate material formed by the non-nuclear detonation of a nuclear weapon. All facilities associated with the DTRSA operation were removed. Based on available information, the areas of concern at the DTRSA consisted of a decon facility (vehicle decon pad and decon sump) in the southern half of the DTRSA, and a burial pit and former loading/unloading area located in the northern half of the DTRSA. Based on the results of the Corrective Action Investigation, radiological field screening detected elevated gamma and alpha readings on excavated plastic debris. Swipe surveys taken on the plastic debris detected removable alpha. No contaminants were detected above preliminary action levels in soil samples. The debris excavated during the corrective action investigation was not characterized. The clean-closure corrective action consisted of excavation, disposal, verification sampling, backfilling, and regrading. Field activities began on May 1, 2000, and ended on May 10, 2000. Soil that was associated with the radiologically contaminated man-made debris was placed into B-25 bins, moved to the designated waste management area where it was scanned, and hauled off-site for disposal. Verification soil samples were collected and analyzed to determine if clean closure had bene achieved. Clean borrow soil was hauled to the site and used to backfill the excavation. The excavation was then regraded to promote drainage and minimize ponding of surface water. Since the site is clean-closed, post-closure care is not required.

D. H. Cox

2000-12-01T23:59:59.000Z

155

Comparison of Zone Cooling Load for Radiant and All-Air Conditioning Systems  

E-Print Network (OSTI)

Load for Radiant and Air Conditioning Systems. ProceedingsRefrigerating and Air Conditioning Engineers Inc. Babiak,of European Heating ahd Air-Conditioning Associations. CEN (

Feng, Jingjuan; Schiavon, Stefano; Bauman, Fred

2012-01-01T23:59:59.000Z

156

Perimeter fan performance in forced draught air-cooled steam condensers.  

E-Print Network (OSTI)

??ENGLISH ABSTRACT: Axial flow fan arrays form part of air-cooled steam condensers in direct drycooled power plants. This dissertation investigates the performance of axial flow (more)

Van der Spuy, Sybrand Johannes

2011-01-01T23:59:59.000Z

157

Prev'air: An Operational Forecasting and Mapping System for Air Quality in Europe  

Science Conference Proceedings (OSTI)

The current state of the art in three-dimensional chemistry-transport models allows them to be considered as mature and reliable enough to be combined with observations networks for implementing integrated air quality monitoring systems over ...

Laurence Rouil; Ccile Honor; Bertrand Bessagnet; Laure Malherbe; Frdrik Meleux; Robert Vautard; Matthias Beekmann; Jean-Marie Flaud; Anne Dufour; Daniel Martin; Aline Peuch; Vincent-Henri Peuch; Christian Elichegaray; Nathalie Poisson; Laurent Menut

2009-01-01T23:59:59.000Z

158

Consolidated Air Mobility Planning System (CAMPS): An Air Mobility Planning and  

E-Print Network (OSTI)

, the initial development of CAMPS was concluded and primary maintenance responsibility was turned over for Transportation Analysis (CTA) Research Areas Aviation Safety Air Traffic Management Analysis Data, Statistical Analysis Highway Safety Intelligent Transportation Systems Logistics Management Supply Chain Management

159

Inverter control systems in the residential heat pump air conditioner  

SciTech Connect

A compressor capacity control with an inverter has been considered from the viewpoint of high energy saving in a refrigerating cycle. However, the system has not been put into practical use because of high initial cost, technical problems of electronic parts, and complexity of system control. In this connection, we developed the new inverter-controlled heat-pump air conditioner by using the latest electronics and refrigeration technology. This paper discusses the trend of energy saving in air conditioners in Japan and the objectives of developing the inverter controlled air conditioner. It also discusses the following items with respect to the inverter controlled air conditioner and the effects of employing an inverter: 1. Inverter for air conditioning; 2. Refrigeration cycle; 3. Air conditioner control with inverter.

Shimma, Y.; Tateuchi, T.; Suglura, H.

1985-01-01T23:59:59.000Z

160

Research on Fuzzy Regulation Strategies in the Constant Air Volume Air Conditioning System  

E-Print Network (OSTI)

The energy consumption of the constant air volume (CAV) system largely depends on the regulation strategies. Although some air conditioning systems are equipped with automatic regulation devices, others lack effective regulation strategies. To avoid wasting energy and presenting simple regulation methods, fuzzy regulation strategies for CAV systems are studied in this research. A CAV system of an office building is modeled and simulated with the Designer's Simulation Toolkit (DeST). The operating parameters are calculated based on the instantaneous load obtained from simulation. The operation of the system is divided into five stages according to different conception of cold or hot in different seasons. The relationship between the outdoor air temperature and the fresh air volume, and the supply air temperature is presented in the form of fuzzy rules. Then the building is simulated under different load conditions and the operating parameters are obtained from fuzzy reasoning. Finally, the effect of fuzzy strategies on energy consumption is analyzed and compared with the effects of the operating parameters obtained from simulation. The results show that energy consumption using a fuzzy regulation strategy is close to the energy consumption of knowing the exact load of the building, while the fuzzy regulation strategy can largely simplify the regulation of the air conditioning system.

Bai, T.; Zhang, J.; Ning, N.; Tong, K.; Wu, Y.; Wang, H.

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "forced air system" 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

Scalability of the air transportation system and development of multi-airport systems : a worldwide perspective  

E-Print Network (OSTI)

With the growing demand for air transportation and the limited ability to increase capacity at some key points in the air transportation system, there are concerns that in the future the system will not scale to meet demand. ...

Bonnefoy, Philippe A

2008-01-01T23:59:59.000Z

162

Reducing Air-Conditioning System Energy Using a PMV Index  

E-Print Network (OSTI)

The control system of central air-conditioning, based on PMV, not only improves thermal comfort but also reduces system energy consumption. A new thermal comfort degree softsensor model is built via use of the CMAC neural network nonlinear calibration function. It can realize on-line detection of thermal comfort. At the same time it can also realize real-time control of central air-conditioning system based on PMV. Simulation results demonstrate the simplicity and effectiveness of the presented method.

Li, H.; Zhang, Q.

2006-01-01T23:59:59.000Z

163

HVAC System Design Strategies to Address Indoor Air Quality Standards  

Science Conference Proceedings (OSTI)

This report describes strategies that can be employed in the design and operation of heating, ventilating, and air conditioning (HVAC) systems to address the ASHRAE Standard 62 "Ventilation for Acceptable Indoor Air Quality" requirements. The report examines a wide variety of approaches to meeting the standard and their impact on energy consumption, occupant comfort, and other factors.

1999-12-09T23:59:59.000Z

164

AirCore: An Innovative Atmospheric Sampling System  

Science Conference Proceedings (OSTI)

This work describes the AirCore, a simple and innovative atmospheric sampling system. The AirCore used in this study is a 150-m-long stainless steel tube, open at one end and closed at the other, that relies on positive changes in ambient ...

Anna Karion; Colm Sweeney; Pieter Tans; Timothy Newberger

2010-11-01T23:59:59.000Z

165

Test results of lithium pool-air reaction suppression systems  

Science Conference Proceedings (OSTI)

Engineered reaction suppression systems were demonstrated to be effective in suppressing lithium pool-air reactions for lithium quantities up to 100 kg. Lithium pool-air reaction suppression system tests were conducted to evaluate suppression system effectiveness for potential use in fusion facilities in mitigating consequences of postulated lithium spills. Small-scale perforated and sacrificial cover plate suppression systems with delayed inert gas purging proved effective in controlling the lithium-air interaction for lithium quantities near 15 kg at initial temperatures up to 450/sup 0/C. A large-scale suppression system with a sacrificial cover, a diverter plate, an inert gas atmosphere, and remotely retrievable catch pans proved effective in controlling lithium pool-air interaction for a 100-kg lithium discharge at an initial temperature of 550/sup 0/C. This suppression system limited the maximum pool temperature to about 600/sup 0/C less than that expected for a similar lithium pool-air reaction without a suppression system. Lithium aerosol release from this large-scale suppression system was a factor of about 10,000 less than that expected for a lithium pool-air reaction with no suppression system. Remote retrieval techniques for lithium cleanup, such as (1) in-place lithium siphoning and overhead crane dismantling, and (2) lithium catch pan removal by use of an overhead crane, were demonstrated as part of this large-scale test.

Jeppson, D.W.

1987-02-01T23:59:59.000Z

166

An aerial radiological survey of the Davis-Monthan Air Force Base and surrounding area, Tucson, Arizona  

SciTech Connect

An aerial radiological survey, which was conducted from March 1 to 13, 1995, covered a 51-square-mile (132-square-kilometer) area centered on the Davis-Monthan Air Force Base (DMAFB) in Tucson, Arizona. The results of the survey are reported as contours of bismuth-214 ({sup 214}Bi) soil concentrations, which are characteristic of natural uranium and its progeny, and as contours of the total terrestrial exposure rates extrapolated to one meter above ground level. All data were scaled and overlaid on an aerial photograph of the DMAFB area. The terrestrial exposure rates varied from 9 to 20 microroentgens per hour at one meter above the ground. Elevated levels of terrestrial radiation due to increased concentrations of {sup 214}Bi (natural uranium) were observed over the Southern Pacific railroad yard and along portions of the railroad track bed areas residing both within and outside the base boundaries. No man-made, gamma ray-emitting radioactive material was observed by the aerial survey. High-purity germanium spectrometer and pressurized ionization chamber measurements at eight locations within the base boundaries were used to verify the integrity of the aerial results. The results of the aerial and ground-based measurements were found to be in agreement. However, the ground-based measurements were able to detect minute quantities of cesium-137 ({sup 137}Cs) at six of the eight locations examined. The presence of {sup 137}Cs is a remnant of fallout from foreign and domestic atmospheric nuclear weapons testing that occurred in the 1950s and early 1960s. Cesium-137 concentrations varied from 0.1 to 0.3 picocuries per gram, which is below the minimum detectable activity of the aerial system.

NONE

1995-09-01T23:59:59.000Z

167

LIEUTENANT COLONEL BRIAN K SCHROEDER Lieutenant Colonel Brian Schroeder is Operations Officer for the Air Force  

E-Print Network (OSTI)

2007 Air Command and Staff College ASSIGNMENT HISTORY 1. June 1995 ­ June 1997: Wing Weather Officer ­ July 2005: Commander, Detachment 1, 607th WS, Camp Red Cloud, South Korea 6. July 2005 ­ June 2007

Peterson, Blake R.

168

Estimating Contemporary and Future Wind-Damage Losses from Hurricanes Affecting Eglin Air Force Base, Florida  

Science Conference Proceedings (OSTI)

The strongest hurricanes over the North Atlantic Ocean are getting stronger, with the increase related to rising ocean temperature. Here, the authors develop a procedure for estimating future wind losses from hurricanes and apply it to Eglin Air ...

James B. Elsner; Shawn W. Lewers; Jill C. Malmstadt; Thomas H. Jagger

2011-07-01T23:59:59.000Z

169

Feasibility study of burning waste paper in coal-fired boilers on Air Force installations. Master's thesis  

Science Conference Proceedings (OSTI)

This thesis examined the feasibility of using waste paper derived fuel in coal-fired boilers on Air Force installations in an attempt to help solve air pollution and solid waste disposal problems. The implementation of waste paper derived fuel was examined from both a technical acceptability and an economic feasibility viewpoint. The majority of data for this study was obtained through literature reviews and personal interviews. Waste paper was found to be technically acceptable for use as fuel. However, waste paper has certain characteristics that may create problems during combustion and therefore further research is required. These problems included the possibility of increased nitrous oxide emissions, increased volatile emissions, dioxin and furan emissions, formation of hydrochloric acid, and the presence of heavy metals in emissions and ash.

Smith, K.P.

1993-09-01T23:59:59.000Z

170

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

171

An integrated multi-model approach for air quality assessment: Development and evaluation of the OSCAR Air Quality Assessment System  

Science Conference Proceedings (OSTI)

This paper reports on the development and evaluation of a new modelling system for studying air quality on local scales. A multi-model approach has been adopted to develop the OSCAR Air Quality Modelling System to conduct assessments at different levels ... Keywords: Air quality, Model evaluation, Modelling system, Nitrogen oxides, OSCAR, Particulate matter

Ranjeet S. Sokhi; Hongjun Mao; Srinivas T. G. Srimath; Shiyuan Fan; Nutthida Kitwiroon; Lakhumal Luhana; Jaakko Kukkonen; Mervi Haakana; Ari Karppinen; K. Dick van den Hout; Paul Boulter; Ian S. McCrae; Steinar Larssen; Karl I. Gjerstad; Roberto San Jos; John Bartzis; Panagiotis Neofytou; Peter van den Breemer; Steve Neville; Anu Kousa; Blanca M. Cortes; Ingrid Myrtveit

2008-03-01T23:59:59.000Z

172

Original article: Lumped-parameter-based thermal analysis of a doubly radial forced-air-cooled direct-driven permanent magnet wind generator  

Science Conference Proceedings (OSTI)

A lumped-parameter-based thermal analysis of a direct-driven permanent magnet wind generator with double radial forced-air cooling is presented. In the proposed thermal model, the thermal conduction and convection as well as the heating of the cooling ... Keywords: Air cooling, Permanent magnet synchronous generator, Thermal analysis, Thermal resistance networks

Janne Nerg, Vesa Ruuskanen

2013-04-01T23:59:59.000Z

173

Modeling of a Signal Processing System for Aircraft Air Data...  

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

Modeling of a Signal Processing System for Aircraft Air Data Instrumentation Speaker(s): Thomas John Rohloff Date: September 21, 1998 - 12:00pm Location: 90-3148 Seminar HostPoint...

174

Concepts studies for future intracity air transportation systems  

E-Print Network (OSTI)

Summary: This report is concerned with describing the possible application of future air transportation systems within urban areas of the United States. The planning horizon extends to 1995 and the report focuses on the ...

Joint DOT-NASA Civil Aviation Research and Development Policy Study.; United States. National Aeronautics and Space Administration; Massachusetts Institute of Technology. Flight Transportation Laboratory

1970-01-01T23:59:59.000Z

175

Evaluation of an Air Pollution Analysis System for Complex Terrain  

Science Conference Proceedings (OSTI)

This paper describes results from a study to evaluate components of an operational air quality modeling system for complex terrain. In particular, the Cinder Cone Butte (CCB) modeler's dataset is used to evaluate the current technique for ...

D. G. Ross; D. G. Fox

1991-07-01T23:59:59.000Z

176

Residential Air-Conditioning System with Smart-Grid Functionality.  

E-Print Network (OSTI)

??This thesis sets forth a novel intelligent residential air-conditioning (A/C) system controller that provides optimal thermal comfort and electricity cost trade-offs for a household resident (more)

Thomas, Auswin George

2012-01-01T23:59:59.000Z

177

Evaluating passenger delays in the US domestic air transportation system  

E-Print Network (OSTI)

A fundamental component of any National Airspace System (NAS) performance evaluation is the cost impact of air traffic delays, and more generally capacity limitations, on the traveling passengers. In previous research it ...

Umang, Nitish

2010-01-01T23:59:59.000Z

178

A systems analysis of scheduled air transportation networks  

E-Print Network (OSTI)

This work establishes the conditions for airline system design building from submodels of smaller aspects of air transportation. The first three sections develop submodels which then are combined in extensive numerical ...

Swan, William M.

1979-01-01T23:59:59.000Z

179

Longevity of Duct Tape in Residential Air Distribution Systems...  

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

Longevity of Duct Tape in Residential Air Distribution Systems: 1-D, 2-D, and 3-D Joints Speaker(s): Bass Abushakra Date: July 30, 2002 - 12:00pm Location: Bldg. 90 Seminar Host...

180

Air Leakage of Furnaces and Air Handlers  

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

Air Leakage of Furnaces and Air Handlers Air Leakage of Furnaces and Air Handlers Title Air Leakage of Furnaces and Air Handlers Publication Type Journal Article LBNL Report Number LBNL-5553E Year of Publication 2010 Authors Walker, Iain S., Mile Lubliner, Darryl J. Dickerhoff, and William W. Delp Journal 2010 ACEEE Summer Study on Energy Efficiency in Buildings The Climate for efficiency is now Date Published 08/2010 Abstract In recent years, great strides have been made in reducing air leakage in residential and to a lesser extent small commercial forced air duct systems. Several authorities have introduced low leakage limits for thermal distribution systems; for example, the State of California Energy Code for Buildings gives credit for systems that leak less than 6% of the total air flow at 25 Pa.

Note: This page contains sample records for the topic "forced air system" 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

Pressure Regain Strategies for Existing Air Distribution Systems  

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

Pressure Regain Strategies for Pressure Regain Strategies for Existing Air Distribution Systems Arlan Burdick IBACOS, Inc. Pressure Regain Strategies for Existing Air Distribution Systems Problem Statement Thermal enclosure upgrades can reduce peak loads by 50%. If the furnace is right-sized for this new peak load and the ducts are not modified or replaced, the resulting airflows at the supply registers will be significantly reduced. -Will the outlets meet industry standards for performance? - Should they be replaced to achieve good room air mixing? - Should the end of the duct be modified to improve airflow characteristics? Pressure Regain Strategies for Existing Air Distribution Systems Expected Results We expect to find a cost-effective solution to gaining proper airflow to a room without completely replacing

182

Starter systems designed for efficient air/gas comsumption  

Science Conference Proceedings (OSTI)

This paper examines engine starting systems designed by Pow-R-Quik. Pow-R-Quik's most recent product line includes several models that are designed to start most diesel and natural gas engines. Pow-R-Quick also offers air starting systems for a wide range of gas turbine applications. The model DS16, air or gas starter, is designed for engines with a displacement up to 500 cid diesel and up to 1000 cid natural gas. The DS60 model is also an air or gas operated starter with specially designed heavy duty bearings for maximum performance. To prove out starter durability and performance, Pow-R-Quik has installed three fully instrumented diesel engine test cells. The number of starts that can be achieved ranges from zero to 99,000. The system can be set to regulate the air for low or high pressure starts, control the lubricant, etc.

Not Available

1985-05-01T23:59:59.000Z

183

Retrofitting Air Conditioning and Duct Systems in Hot, Dry Climates  

SciTech Connect

This technical report describes CARB's work with Clark County Community Resources Division in Las Vegas, Nevada, to optimize procedures for upgrading cooling systems on existing homes in the area to implement health, safety, and energy improvements. Detailed monitoring of five AC systems showed that three of the five systems met or exceeded air flow rate goals.

Shapiro, C.; Aldrich, R.; Arena, L.

2012-07-01T23:59:59.000Z

184

Mound Laboratory's Air Surveillance System  

SciTech Connect

A comprehensive air surveillance system was developed. The system includes surveillance of the source, transport conditions, and concentration at the receptor sites. An unusual aspect of the system is the implementation of off-site sampling programs through local governmental agencies. Background levels of radioactivity are routinely determined.

Carfagno, D. G.

1974-12-31T23:59:59.000Z

185

DEVELOPMENT OF AN AIR?CYCLE ENVIRONMENTAL CONTROL SYSTEM FOR AUTOMOTIVE APPLICATIONS.  

E-Print Network (OSTI)

??An air?cycle air conditioning system, using a typical automotive turbocharger as the core of the system, was designed and tested. Effects on engine performance were (more)

Forster, Christopher James

2009-01-01T23:59:59.000Z

186

Atmospheric Forcing of the Winter AirSea Heat Fluxes over the Northern Red Sea  

Science Conference Proceedings (OSTI)

The influence of the atmospheric circulation on the winter airsea heat fluxes over the northern Red Sea is investigated during the period 19852011. The analysis based on daily heat flux values reveals that most of the net surface heat exchange ...

Vassilis P. Papadopoulos; Yasser Abualnaja; Simon A. Josey; Amy Bower; Dionysios E. Raitsos; Harilaos Kontoyiannis; Ibrahim Hoteit

2013-03-01T23:59:59.000Z

187

Air-Microfluidics: Towards Lab-on-a-Chip Systems for Low-Cost Air-Quality  

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

Air-Microfluidics: Towards Lab-on-a-Chip Systems for Low-Cost Air-Quality Air-Microfluidics: Towards Lab-on-a-Chip Systems for Low-Cost Air-Quality Monitoring Speaker(s): Igor Paprotny Date: November 12, 2013 - 12:00pm - 1:00pm Location: 90-3122 Seminar Host/Point of Contact: Lara Gundel Air-microfluidic devices that monitor particles suspended in air, as opposed to liquids, can dramatically reduce the size and cost of future air-quality sensors. The use of microelectromechanical systems (MEMS) technologies and wafer-scale integration permits the inclusion of many different sensors onto a small footprint. Benefits of air-microfluidics are many. For example, air-microfluidic lab-on-a-chip devices can be used as portable sensors for tracking individual exposure to airborne pollutants. Such sensors will enable linking exposure and biometric information to

188

Performance comparison between air and liquid residential solar heating systems  

SciTech Connect

Comparisons of system performance for the flat plate liquid-heating system in CSU Solar House I, the evacuated-tube collector system in Solar House I, and the flat plate air-heating system in CSU Solar House II are described for selected months of the 1976 and 1977 heating seasons. Only space and domestic water heating data are compared. The flat plate air- and liquid-heating collectors operating with complete heating systems have nearly equal efficiencies when based upon solar flux while the collector fluids are flowing, but approximately 40% more energy is collected during a heating season with the air-heating system because the air system operates over a longer period of the day. On the basis of short-term data, the evacuated tube collector array on Solar House I is about 27% more efficient than the flat plate air-heating collector array on Solar House II based on gross roof area occupied by the collectors and manifolds.

Karaki, S.; Duff, W.S.; Loef, G.O.G.

1978-01-01T23:59:59.000Z

189

Experimental studies of a teleoperator system with projection-based force reflection algorithms  

Science Conference Proceedings (OSTI)

Results of experimental studies of a teleoperator system with projection-based force reflection algorithms in the presence of communication constraints are presented. It is demonstrated that, using the projection-based force reflection algorithms, the ...

Ilia G. Polushin; Peter X. Liu; Chung-Horng Lung

2009-10-01T23:59:59.000Z

190

Hydrologic transport of depleted uranium associated with open air dynamic range testing at Los Alamos National Laboratory, New Mexico, and Eglin Air Force Base, Florida  

SciTech Connect

Hydrologic investigations on depleted uranium fate and transport associated with dynamic testing activities were instituted in the 1980`s at Los Alamos National Laboratory and Eglin Air Force Base. At Los Alamos, extensive field watershed investigations of soil, sediment, and especially runoff water were conducted. Eglin conducted field investigations and runoff studies similar to those at Los Alamos at former and active test ranges. Laboratory experiments complemented the field investigations at both installations. Mass balance calculations were performed to quantify the mass of expended uranium which had transported away from firing sites. At Los Alamos, it is estimated that more than 90 percent of the uranium still remains in close proximity to firing sites, which has been corroborated by independent calculations. At Eglin, we estimate that 90 to 95 percent of the uranium remains at test ranges. These data demonstrate that uranium moves slowly via surface water, in both semi-arid (Los Alamos) and humid (Eglin) environments.

Becker, N.M. [Los Alamos National Lab., NM (United States); Vanta, E.B. [Wright Laboratory Armament Directorate, Eglin Air Force Base, FL (United States)

1995-05-01T23:59:59.000Z

191

Air-flow regulation system for a coal gasifier  

DOE Patents (OSTI)

An improved air-flow regulator for a fixed-bed coal gasifier is provided which allows close air-flow regulation from a compressor source even though the pressure variations are too rapid for a single primary control loop to respond. The improved system includes a primary controller to control a valve in the main (large) air supply line to regulate large slow changes in flow. A secondary controller is used to control a smaller, faster acting valve in a secondary (small) air supply line parallel to the main line valve to regulate rapid cyclic deviations in air flow. A low-pass filter with a time constant of from 20 to 50 seconds couples the output of the secondary controller to the input of the primary controller so that the primary controller only responds to slow changes in the air-flow rate, the faster, cyclic deviations in flow rate sensed and corrected by the secondary controller loop do not reach the primary controller due to the high frequency rejection provided by the filter. This control arrangement provides at least a factor of 5 improvement in air-flow regulation for a coal gasifier in which air is supplied by a reciprocating compressor through a surge tank.

Fasching, George E. (Morgantown, WV)

1984-01-01T23:59:59.000Z

192

Friction and Adhesion Forces of Bacillus thuringiensis Spores on Planar Surfaces in Atmospheric Systems  

SciTech Connect

The kinetic friction force and the adhesion force of Bacillus thuringiensis spores on planar surfaces in atmospheric systems were studied using atomic force microscopy. The influence of relative humidity (RH) on these forces varied for different surface properties including hydrophobicity, roughness, and surface charge. The friction force of the spore was greater on a rougher surface than on mica, which is atomically flat. As RH increases, the friction force of the spores decreases on mica whereas it increases on rough surfaces. The influence of RH on the interaction forces between hydrophobic surfaces is not as strong as for hydrophilic surfaces. The friction force of the spore is linear to the sum of the adhesion force and normal load on the hydrophobic surface. The poorly defined surface structure of the spore and the adsorption of contaminants from the surrounding atmosphere are believed to cause a discrepancy between the calculated and measured adhesion forces.

Kweon, Hyojin [Georgia Institute of Technology; Yiacoumi, Sotira [Georgia Institute of Technology; Tsouris, Costas [ORNL

2011-01-01T23:59:59.000Z

193

Identification of rotordynamic forces in a flexible rotor system using magnetic bearings  

E-Print Network (OSTI)

Methods are presented for parameter identification of an annular gas seal on a flexiblerotor test rig. Dynamic loads are applied by magnetic bearings (MBs) that support the rotor. MB forces are measured using fiber-optic strain gauges that are bonded to the poles of the MBs. In addition to force and position measurements, a finite element (FE) rotor model is required for the identification algorithms. The FE rotor model matches free-free characteristics of the test rotor. The addition of smooth air seals to the system introduces stiffness and damping terms for identification that are representative of reaction forces in turbomachines. Tests are performed to experimentally determine seal stiffness and damping coefficients for different running speeds and preswirl conditions. Stiffness and damping coefficients are determined using a frequency domain identification method. This method uses an iterative approach to minimize error between theoretical and experimental transfer functions. Several time domain approaches are also considered; however, these approaches do not produce valid identification results. Stiffness coefficients are measured using static test results and an MB current and position based model. Test results produce seal coefficients with low uncertainties for the frequency domain identification method. Static test uncertainties are an order of magnitude larger, and time domain attempts fail to produce sealIn addition to the primary identification research, an investigation of the relationships between MB force, strain, and magnetic field is conducted. The magnetic field of an MB is modeled using commercial FE software. The magnetic field model is used to predict strain measurements for quasi-static test conditions. The strain predictions are compared with experimental strain measurements. Strain predictions agree with experimental measurements, although strain is typically over-predicted. coefficient measurements.

Zutavern, Zachary Scott

2006-08-01T23:59:59.000Z

194

Sensitivity of Forced Air Distribution System Efficiency to Climate, Duct Location, Air Leakage and Insulation  

E-Print Network (OSTI)

........................................................................................................ 10 Part One Input data for ASHRAE 152P Calculations .......................................................................... 11 Table 1 Temperatures from ASHRAE 152P Second public review draft................................. 11 Table 2 Humidity Conditions from ASHRAE 152P Second public review draft..................... 11

195

Sensitivity of forced air distribution system efficiency to climate, duct location, air leakage and insulation  

E-Print Network (OSTI)

locations: Attic Attic with a radiant barrier (ductsbelow radiant barrier) Uninsulated Crawlspace vented) with cool roof/radiant barrier temperature reduction

Walker, Iain

2001-01-01T23:59:59.000Z

196

Vehicle Transient Air Conditioning Analysis: Model Development& System Optimization Investigations  

DOE Green Energy (OSTI)

The National Renewable Energy Laboratory (NREL) has developed a transient air conditioning (A/C) system model using SINDA/FLUINT analysis software. It captures all the relevant physics of transient A/C system performance, including two-phase flow effects in the evaporator and condenser, system mass effects, air side heat transfer on the condenser/evaporator, vehicle speed effects, temperature-dependent properties, and integration with a simplified cabin thermal model. It has demonstrated robust and powerful system design optimization capabilities. Single-variable and multiple variable design optimizations have been performed and are presented. Various system performance parameters can be optimized, including system COP, cabin cool-down time, and system heat load capacity. This work presents this new transient A/C system analysis and optimization tool and shows some high-level system design conclusions reached to date. The work focuses on R-134a A/C systems, but future efforts will modify the model to investigate the transient performance of alternative refrigerant systems such as carbon dioxide systems. NREL is integrating its transient air conditioning model into NRELs ADVISOR vehicle system analysis software, with the objective of simultaneously optimizing A/C system designs within the overall vehicle design optimization.

Hendricks, T. J.

2001-06-01T23:59:59.000Z

197

A Numerical Daily Air Quality Forecast System for The Pacific Northwest  

Science Conference Proceedings (OSTI)

A real-time photochemical air quality forecast system has been implemented for the Puget Sound region to support public awareness of air quality issues. The Air Indicator Report for Public Access and Community Tracking (AIRPACT) forecast system ...

Joseph Vaughan; Brian Lamb; Chris Frei; Rob Wilson; Clint Bowman; Cristiana Figueroa-Kaminsky; Sally Otterson; Mike Boyer; Cliff Mass; Mark Albright; Jane Koenig; Alice Collingwood; Mike Gilroy; Naydene Maykut

2004-04-01T23:59:59.000Z

198

ANALYSIS OF DEDICATED OUTDOOR AIR SYSTEMS FOR ...  

Science Conference Proceedings (OSTI)

... Baseline: The baseline system modeled included Water Source Heat Pumps (WSHPs) with a Cooling Tower and a Boiler serving the common loop. ...

199

Risk assessment of the health liabilities from exposure to toxic metals found in the composted material of Air Force municipal solid waste. Master's thesis  

Science Conference Proceedings (OSTI)

This thesis assesses the risk of the health liabilities from exposure to toxic metals found in the composted material of Air Force municipal solid waste (MSW). The goal is to determine the probability that the composted MSW could be a health hazard if it were used as a soil amendment. The research limited the assessment of the exposure risk to heavy metals found in raw MSW and its resulting compost. The thesis uses reviews of present literature to examine the food and soil ingestion exposure pathways. These pathways are assessed using the heavy metal concentrations found in MSW compost and the soil-plant partition coefficients of vegetables grown in soil mixed with sewage sludge or soil irrigated with sewage sludge or soil irrigated with sewage sludge leachate. The recommendation resulting from this research is that the Air Force should not use MSW composting as part of its future solid waste management plan. This alternative to landfilling contains a chronic health risk that is greater than the Environmental Protection Agency's guideline. If the Air Force would use MSW composting in the future, it may endanger Air Force personnel and others who use the compost created from Air Force MSW. Risk assessment, Heavy metals, Recycling municipal solid waste, Pollution, Composting.

Merrymon, T.L.

1993-09-01T23:59:59.000Z

200

Engine cooling system air venting arrangement with buoyant air purge valve  

Science Conference Proceedings (OSTI)

An air vent arrangement is described for the cooling system of an automotive type engine having a radiator with a coolant inlet. The engine has coolant passages communicating with the radiator through an outlet essentially horizontally disposed, tubing connecting the radiator inlet and coolant outlet, and a thermostat in the outlet horizontally movable to open and closed positions. A horizontally disposed air bleed bypass passage is located vertically above the thermostat connecting the coolant outlet to a portion of the tubing downstream of the thermostat bypassing the same when the thermostat is in a closed position for bleeding air from the cooling system. The bypass passage has a valve therein moveable between a position blocking flow of coolant through the same and a second position opening the passage permitting the bleed of air therethrough. The valve is buoyant and constructed and arranged to pivot from a non flowblocking air bleed position into a flow blocking position in response to flow of coolant into the bypass passage acting thereagainst.

Schnizlein, M.E.

1987-02-17T23:59:59.000Z

Note: This page contains sample records for the topic "forced air system" 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

Variables optimization of building air conditioning system  

Science Conference Proceedings (OSTI)

A heating and climatizer system based on selective absorption of solar energy by a selective collector. The experimental study shows that the performance of this system depends on several variables: the nature of the colporteur fluid, the flow of the ... Keywords: heating and climatisation, modelation and optimization, solar energy

Marius-Constantin Popescu; Cornelia Aida Bulucea; Gheorghe Manolea; Cristian Vladu

2009-10-01T23:59:59.000Z

202

Energy and air emission implications of a decentralized wastewater system  

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

and air emission implications of a decentralized wastewater system and air emission implications of a decentralized wastewater system Title Energy and air emission implications of a decentralized wastewater system Publication Type Journal Article Year of Publication 2012 Authors Shehabi, Arman, Jennifer R. Stokes, and Arpad Horvath Journal Environmental Research Letters Volume 7 Issue 2 Abstract Both centralized and decentralized wastewater systems have distinct engineering, financial and societal benefits. This paper presents a framework for analyzing the environmental effects of decentralized wastewater systems and an evaluation of the environmental impacts associated with two currently operating systems in California, one centralized and one decentralized. A comparison of energy use, greenhouse gas emissions and criteria air pollutants from the systems shows that the scale economies of the centralized plant help lower the environmental burden to less than a fifth of that of the decentralized utility for the same volume treated. The energy and emission burdens of the decentralized plant are reduced when accounting for high-yield wastewater reuse if it supplants an energy-intensive water supply like a desalination one. The centralized facility also reduces greenhouse gases by flaring methane generated during the treatment process, while methane is directly emitted from the decentralized system. The results are compelling enough to indicate that the life-cycle environmental impacts of decentralized designs should be carefully evaluated as part of the design process.

203

Distributed Forcing of Forecast and Assimilation Error Systems BRIAN F. FARRELL  

E-Print Network (OSTI)

Distributed Forcing of Forecast and Assimilation Error Systems BRIAN F. FARRELL Division forecast system gov- erning forecast error growth and the tangent linear observer system governing deterministic and stochastic forcings of the forecast and observer systems over a chosen time interval

Farrell, Brian F.

204

A deterministic air quality forecasting system for Torino urban area, Italy  

Science Conference Proceedings (OSTI)

An urban air quality forecasting system for Torino city has been developed, within the EU funded project FUMAPEX, to support the prevention and management of urban air pollution episodes. The proposed forecasting system is designed to provide stakeholders ... Keywords: Air quality forecasting, Air quality management, Chemical transport models, Urban air pollution, Urban meteorology

S. Finardi; R. De Maria; A. D'Allura; C. Cascone; G. Calori; F. Lollobrigida

2008-03-01T23:59:59.000Z

205

U.S. - Canada Power System Outage Task Force: Final Report on the  

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

- Canada Power System Outage Task Force: Final Report on the - Canada Power System Outage Task Force: Final Report on the Implementation of Task Force Recommendations U.S. - Canada Power System Outage Task Force: Final Report on the Implementation of Task Force Recommendations On August 14, 2003, the largest power blackout in North American history affected an area with an estimated 50 million people and 61,800 megawatts (MW) of electric load in the states of Ohio, Michigan, Pennsylvania, New York, Vermont, Massachusetts, Connecticut and New Jersey, and the Canadian province of Ontario. U.S. - Canada Power System Outage Task Force: Final Report on the Implementation of Task Force Recommendations More Documents & Publications Blackout 2003: Blackout Final Implementation Report Blackout 2003: The August 14, 2003 Blackout One Year Later: Actions Taken

206

AirTec System Co Ltd | Open Energy Information  

Open Energy Info (EERE)

AirTec System Co Ltd AirTec System Co Ltd Jump to: navigation, search Name AirTec System Co Ltd Place Suwon, Gyeonggi-do, Korea (Republic) Product Korean wireless communications equipment vendor; as of January 2008, established a Green Energy Business Division as a PV project developer. Coordinates 37.281368°, 127.013077° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.281368,"lon":127.013077,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

207

Energy Conservation of Air Conditioning Systems in Large Public Buildings  

E-Print Network (OSTI)

Analyzing the actuality of the large-scale public buildings' energy consumption, we know that most of them run not only in low efficiency, but also in high energy consumption. According to the characteristics of the building, we should proceed with the heating characteristics of the exterior -protected construction, the set value of the temperature of the air-conditioning, the lectotype of the Central air-conditioning system, the regulation and the modification of the transmission and distribution system, the use of the new energy and the daily management or the method of adjustment and control, and so on , so we can make the air-conditioning system run efficiently. Analyzing and comparing the large-scale public buildings' energy consumption with each other, some pointed improvement measures are proposed further. According to the study and analysis, even though large-scale public buildings consume a great of energy, there exists a huge potential for energy conservation.

Liu, P.; Li, D.

2006-01-01T23:59:59.000Z

208

Evaluation of force and torque magnitude discrimination thresholds on the human hand-arm system  

Science Conference Proceedings (OSTI)

This article reports on experiments about haptic perception aimed at measuring the force/torque differential thresholds applied to the hand-arm system. The experimental work analyzes how force is sent back to the user by means of a 6 degrees-of-freedom ... Keywords: Force thresholds, perceptual asymmetries, perceptual-based signal processing

M. Vicentini; S. Galvan; D. Botturi; P. Fiorini

2010-10-01T23:59:59.000Z

209

Effect of System and Air Contaminants on PEMFC Performance and Durability (Presentation)  

DOE Green Energy (OSTI)

This presentation summarizes Effect of System and Air Contaminants on PEMFC Performance and Durability.

Dinh, H.

2010-06-11T23:59:59.000Z

210

The reliability of the government cost estimate as an evaluator of the low bid in US Air Force Construction Projects  

E-Print Network (OSTI)

This study proposes to scientifically assess the reliability of previous government cost estimates in evaluating construction project bids and to examine the usefulness of discordancy testing methods as an alternative to the government estimate in evaluating the low bid. A random sample of US Air Force Military Construction (MILCON) projects bid between I Oct 92 and 30 Jun 95 are divided into four subgroups for examination. Sampling distributions are generated in order to determine the mean of the ratio difference between the low bid or median bid and the government cost estimate. A null hypothesis is tested for each comparison. Conclusions are drawn about government cost estimate accuracy, consistency, and reliability. Two discordancy testing methods are examined for their usefulness in evaluating a low bid. A null hypothesis is tested for the significance of detection rates. Conclusions are drawn about the performance of each discordancy test.

Strucely, Timothy David

1995-01-01T23:59:59.000Z

211

Measured Air Distribution Effectiveness for Residential Mechanical Ventilation Systems  

SciTech Connect

The purpose of ventilation is dilute or remove indoor contaminants that an occupant is exposed to. In a multi-zone environment such as a house, there will be different dilution rates and different source strengths in every zone. Most US homes have central HVAC systems, which tend to mix the air thus the indoor conditions between zones. Different types of ventilation systems will provide different amounts of exposure depending on the effectiveness of their air distribution systems and the location of sources and occupants. This paper will report on field measurements using a unique multi-tracer measurement system that has the capacity to measure not only the flow of outdoor air to each zone, but zone-to-zone transport. The paper will derive seven different metrics for the evaluation of air distribution. Measured data from two homes with different levels of natural infiltration will be used to evaluate these metrics for three different ASHRAE Standard 62.2 compliant ventilation systems. Such information can be used to determine the effectiveness of different systems so that appropriate adjustments can be made in residential ventilation standards such as ASHRAE Standard 62.2.

Sherman, Max; Sherman, Max H.; Walker, Iain S.

2008-05-01T23:59:59.000Z

212

Air Distribution Effectiveness for Different MechanicalVentilation Systems  

SciTech Connect

The purpose of ventilation is to dilute indoor contaminants that an occupant is exposed to. In a multi-zone environment such as a house, there will be different dilution rates and different source strengths in every zone. Most US homes have central HVAC systems, which tend to mix conditions between zones. Different types of ventilation systems will provide different amounts of dilution depending on the effectiveness of their air distribution systems and the location of sources and occupants. This paper will report on work being done to both model the impact of different systems and measurements using a new multi-tracer measurement system that has the capacity to measure not only the flow of outdoor air to each zone, but zone-to-zone transport. The ultimate objective of this project is to determine the effectiveness of different systems so that appropriate adjustments can be made in residential ventilation standards such as ASHRAE Standard 62.2.

Sherman, Max H.; Walker, Iain S.

2007-08-01T23:59:59.000Z

213

Packaged air cleaning systems tame desert dust storms in Oman  

SciTech Connect

Vast storms created when cold, northwesterly air masses slam into hot, southwesterly monsoons, moving lethargically over the Sudan and Red Sea, generate swift downdrafts that strike the ground and deflect forward in a powerful, swirling air stream up to 500 km long. As the wind moves along the ground, it churns up particles ranging in size from 80 to 2000 micrometers. This churning also kicks up particles in the 0.1 to 80 micrometer range, and these may rise to heights of 500 m or more, the smaller of which remain suspended for hours. These conditions made it imperative to protect the blades and internal mechanisms of the gas turbines in use at Yibal, Sultanate of Oman. Each of the gas turbines is equipped with a packaged intake air cleaning system. Because no single air filter has been designed to handle effectively the extremely high concentrations of particulates encountered during storms, the AAF air filters are multistage filtration systems. These systems are discussed.

1980-12-01T23:59:59.000Z

214

Installation-Restoration Program Stage 3. McClellan Air Force Base quality-assurance project plan. Final report, November 1987-August 1989  

Science Conference Proceedings (OSTI)

The USAF is conducting a Remedial Investigation/Feasibility Study ( RI/FS) at McClellan Air Force Base (AFB)to assess the extent and magnitude of contamination from past waste-disposal and spill sites. This process includes the development of a remediation plan(s) for sites determined to pose a threat to human health or welfare, or the environment. The remedial investigation (RI) phase of the program includes multimedia sampling tasks to complete site-characterization studies, and to assess potential exposure pathways. McClellan AFB is located near Sacramento, California and is an active aircraft maintenance facility associated with the Air Force Logistics Air Command. This document contains procedures for the collection, analysis, and documentation for all anticipated sampling and analysis tasks. These include ground water monitoring-well installation, geophysical techniques, and sampling and analysis for ground water, surface water, sediment, soil, soil vapor, and air.

Not Available

1989-08-30T23:59:59.000Z

215

A High Performance Pneumatic Force Actuator System Part 1 - Nonlinear Mathematical Model  

E-Print Network (OSTI)

In this pap er we developed a detailed mathematical model of dual action pneumatic actuator contr16 with pr2 or2520 spool valves. E#ects of nonlinear flowthr35 the valve,air compr6T430035 y incylinder chamber2 leakage between chamber6 end of str1 e inactive volume, and time delay and attenuation in the pneumatic lines wercar14T4 consider6 System identification, numer4T simulation and model validation experT11 ts wer conducted for two types of air cylinder and di#er4 t connecting tubes length, showing ver goodagr552T t. This mathematical model will be used in the development of high per35T423 nonlinear for3 contr330T with applications in teleopereopT1 haptic inter164T and rT otics. 1 Introducti Mode) forceIP(k)fiXe tek## e ration, haptic inte#kP9kX andothe applications in robotics recsX( high pefifiP6XIP# force actuators, with highforce output pe r unit wefi9 t. It is also important to have line96 fast andaccurate reu onse as we# as low friction and me hanical impe dance Traditional gekk9 e lek9#6XI motors can not provide the characteP#BfiBXe Fe w ne## de#(#XI motors may have spek)fi dire)XIB(# e actuators, with no intefi)BB9XI # This ar116 has appear in the September 2000 issue of ASME Jour3 of Dynamic Systems Measur2 ment and ContrT1 Vol. 122, No.3, pp. 416-425 1 me hanisms. YeP applications such astek9( ek9(P maste arms with gravitational compe nsation, rePPfi# long duration, static highforce output. In the6 caseB direB drive e levXfi)(6 actuators nekBB6XI9k speXPB cooling syste) todissipate the e xceipa e hei We be lie e thatpneXP96# cylinde# can o#e a be tte alte9BkXI e toefik)6(XI9 or hydraulic actuators forceXP#B type s of applications. PneP966X actuators provide the preBfifi)XI e umeBfifi) qualitie at low cost. The are alsosuitable forcle# e nvironme ts ands...

Edmond Richer; Yildirim Hurmuzlu

2001-01-01T23:59:59.000Z

216

The synchronous force control of a double-axial pneumatic actuating system  

Science Conference Proceedings (OSTI)

This paper presents the design of the synchronous force controller of a double-axial pneumatic actuating system. This system is ideally decomposed into two independent subsystems, and the coupling effect is considered as the noise effect. So, each ... Keywords: STC, double-axial pneumatic system, synchronous force control

Ying-Tsai Wang; Ming-Kun Chang

1999-07-01T23:59:59.000Z

217

Modeling of a Signal Processing System for Aircraft Air Data  

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

Modeling of a Signal Processing System for Aircraft Air Data Modeling of a Signal Processing System for Aircraft Air Data Instrumentation Speaker(s): Thomas John Rohloff Date: September 21, 1998 - 12:00pm Location: 90-3148 Seminar Host/Point of Contact: Joan M. Daisey The velocity, attitude and altitude of flight vehicles have typically been measured with booms that extend from the vehicle surface out into the flow field. However, this arrangement was found to be unacceptable for certain flight applications. Instrumentation was therefore developed by other researchers to measure the flight parameters using an array of pressure measurements located on the surface of the vehicle. The relationship between these pressure measurements and the air data is a complex non-linear function that is not easily described with simple aerodynamic

218

Commissioning and Diagnosis of VAV Air-Conditioning Systems  

E-Print Network (OSTI)

This paper presents a fault detection and diagnosis (FDD) strategy based on system knowledge, qualitative states and object-oriented statistical process control (SPC) models for typical pressure-independent variable air volume (VAV) air-conditioning systems. Eight FDD schemes are built to detect the eleven pre-defined VAV faults using the qualitative and quantitative FDD approaches within the strategy at two steps. The ten hard faults, which would affect the system operation, are analyzed at Step 1. The soft fault, which would not affect the basic system operation but would impact the supervisory controls, is analyzed at Step 2. The strategy is tested and validated on typical VAV systems involving multiple faults, both in simulation and in-situ tests. A software package is developed as a BMS-assisted automatic commissioning tool based on the FDD strategy. Off-line tests were conducted in both the simulated building and the real building.

Qin, J.; Wang, S.; Chan, C.; Xiao, F.

2006-01-01T23:59:59.000Z

219

Thermally Forced Stationary Waves in a Quasigeostrophic System  

Science Conference Proceedings (OSTI)

Analytical solutions of thermally forced stationary waves in a linear quasigeostrophic model are obtained. It is found that the zonal flow has a profound impact on the structure of the responses. The inviscid solutions on a resting basic state ...

Ping Chen

2001-06-01T23:59:59.000Z

220

Solar powered desiccant air conditioning system. Final report  

DOE Green Energy (OSTI)

A solar-powered desiccant air conditioning system using silica gel has been developed, and modifications to the existing unit and additional testing are proposed to demonstrate the feasibility of the unit. Conversion from a rotating bed to a fixed bed of silica gel is proposed. Some general plans for commercialization are briefly discussed. (LEW)

Not Available

1981-07-24T23:59:59.000Z

Note: This page contains sample records for the topic "forced air system" 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

AQUIS: A PC-based air quality and permit information system  

SciTech Connect

The Air Quality Utility Information System (AQUIS) was developed to calculate and track emissions, permits, and related information. The system runs on IBM-compatible personal computers using dBASE IV. AQUIS tracks more than 900 data items distributed among various source categories and allows the user to enter specific information on permit control devices, stacks, and related regulatory requirements. The system is currently operating at seven US Air Force Materiel Command facilities, large industrial operations involved in the repair and maintenance of aircraft. Environmental management personnel are responsible for the compliance status of as many as l,000 sources at each facility. The usefulness of the system has been enhanced by providing a flexible reporting capability that permits users who are unfamiliar with database structure to design and prepare reports containing specified information. In addition to the standard six pollutants, AQUIS calculates compound-specific emissions and allows users to enter their own emission estimates. This capability will be useful in developing air toxics inventories and control plans.

Smith, A.E.; Huber, C.C.; Tschanz, J. [Argonne National Lab., IL (United States); Ryckman, J.S. Jr. [Air Force Air Materiel Command, Wright-Patterson AFB, OH (United States)

1992-09-01T23:59:59.000Z

222

Thermal storage HVAC system retrofit provides economical air conditioning  

Science Conference Proceedings (OSTI)

This article describes an EMS-controlled HVAC system that meets the ventilation and cooling needs of an 18,000-seat indoor ice hockey arena. The Buffalo Memorial Auditorium (affectionately referred to as the Aud) was built in 1937 under the Works Project Administration of the federal government. Its original configuration included a 12,000-seat arena with an ice skating rink. By the late 1980s, the city was unsuccessfully attempting to attract events and tenants to the auditorium, which lacked air conditioning and other modern amenities. Thus, it was decided to renovate the facility to make it marketable. The first phase of the renovation included installing an air-conditioning system in the arena and repairing the existing building systems that were inoperable because of deferred maintenance. After considering the existing conditions (such as size of the space, intermittent usage, construction restrictions, operating budgets and the limited operations staff), the engineering team designed an innovative HVAC system. The system's features include: a carbon dioxide monitoring device that controls the intake of outside air; an ice storage system that provides chilled water and shifts electrical demand to off-peak hours; and a design that uses the building mass as a heat sink. A new energy management system (EMS) determines building cooling needs based on the type of event, ambient conditions and projected audience size. Then, it selects the most economical method to obtain the desired arena temperature.

Smith, S.F. (Wendel Engineers, P.C., Buffalo, NY (United States))

1993-03-01T23:59:59.000Z

223

Systems and methods of detecting force and stress using tetrapod nanocrystal  

DOE Patents (OSTI)

Systems and methods of detecting force on the nanoscale including methods for detecting force using a tetrapod nanocrystal by exposing the tetrapod nanocrystal to light, which produces a luminescent response by the tetrapod nanocrystal. The method continues with detecting a difference in the luminescent response by the tetrapod nanocrystal relative to a base luminescent response that indicates a force between a first and second medium or stresses or strains experienced within a material. Such systems and methods find use with biological systems to measure forces in biological events or interactions.

Choi, Charina L.; Koski, Kristie J.; Sivasankar, Sanjeevi; Alivisatos, A. Paul

2013-08-20T23:59:59.000Z

224

Direct methanol/air fuel cells: Systems considerations  

DOE Green Energy (OSTI)

Successful operation of a direct methanol/air fuel cell system depends upon appropriate integration of the fuel cell components and accommodation of the need for heat and mass transfer within the system. The features of the system that must be considered separately and in an interactive fashion are: (1) the physical state of the fuel feed stream, (2) electrode characteristics, (3) characteristics of the electrolyte, (4) product water removal, (5) heat transfer into our out of the stack, and (6) methanol loss modes. The operating temperature and pressure will be determined, to a large extent, by these features. An understanding of the component features and their interactions is necessary for initial system considerations for direct methanol/air fuel cells.

Huff, J.R.

1990-01-01T23:59:59.000Z

225

Successful Demolition of Historic Cape Canaveral Air Force Station Launch Facilities: Managing the Process to Maximize Recycle Value to Fund Demolition  

SciTech Connect

This paper will present the history of the Atlas 36 and Titan 40 Space Launch Complexes (SLC), the facility assessment process, demolition planning, recycle methodology, and actual facility demolition that resulted in a 40% reduction in baseline cost. These two SLC launched hundreds of payloads into space from Cape Canaveral Air Force Station (AFS), Florida. The Atlas-Centaur family of rockets could lift small- to medium-size satellites designed for communications, weather, or military use, placing them with near pinpoint accuracy into their intended orbits. The larger Titan family was relied upon for heavier lifting needs, including launching military satellites as well as interplanetary probes. But despite their efficiency and cost-effectiveness, the Titan rockets, as well as earlier generation Atlas models, were retired in 2005. Concerns about potential environmental health hazards from PCBs and lead-based paint chipping off the facilities also contributed to the Air Force's decision in 2005 to dismantle and demolish the Atlas and Titan missile-launching systems. Lockheed Martin secured the complex following the final launch, removed equipment and turned over the site to the Air Force for decommissioning and demolition (D and D). AMEC was retained by the Air Force to perform demolition planning and facility D and D in 2004. AMEC began with a review of historical information, interviews with past operations personnel, and 100% facility assessment of over 100 structures. There where numerous support buildings that due to their age contained asbestos containing material (ACM), PCB-impacted material, and universal material that had to be identified and removed prior to demolition. Environmental testing had revealed that the 36B mobile support tower (MST) exceeded the TSCA standard for polychlorinated biphenyls (PCB) paint (<50 ppm), as did the high bay sections of the Titan Vertical Integration Building (VIB). Thus, while most of the steel structures could be completely recycled, about one-third of 36B MST and the affected areas of the VIB were to be consigned to an on-site regulated waste landfill. In all, it is estimated that approximately 10,000,000 kg (11,000 tons) of PCB-coated steel will be land-filled and 23,000,000 kg (25,000 tons) will be recycled. The recycling of the steel and other materials made it possible to do additional demolition by using these funds. Therefore, finding ways to maximize the recycle value of materials became a key factor in the pre-demolition characterization and implementation strategy. This paper will present the following: - Critical elements in demolition planning working at an active launch facility; - Characterization and strategy to maximize steel recycle; - Waste disposition strategy to maximize recycle/reuse and minimize disposal; - Recycle options available at DOD installations that allow for addition funds for demolition; - Innovation in demolition methodologies for large structures - explosive demolition and large-scale dismantlement; - H and S aspects of explosive demolition and large scale dismantlement. In conclusion: The Cape Canaveral AFS Demolition Program has been a great success due to the integration of multiple operations and contractors working together to determine the most cost-effective demolition methods. It is estimated that by extensive pre-planning and working with CCAFS representatives, as well as maximizing the recycle credits of various material, primarily steel, that the government will be able to complete what was base-lined to be a $30 M demolition program for < $20 M. Other factors included a competitive subcontractor environment where they were encouraged with incentives to maximize recycle/reuse of material and creative demolition solutions. Also, by overlapping multiple demolition tasks at multiple facilities allowed for a reduction in field oversight. (authors)

Jones, A.; Hambro, L. [AMEC Earth and Environmental, Inc., Cocoa, FL (United States); Hooper, K. [U.S. Air Force 45th Space Wing, Patrick AFB, Florida (United States)

2008-07-01T23:59:59.000Z

226

ENERGY STAR Building Upgrade Manual Chapter 8: Air Distribution Systems |  

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

8: Air Distribution 8: Air Distribution Systems Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources Success stories Target Finder

227

Closed loop air cooling system for combustion turbines  

DOE Patents (OSTI)

Convective cooling of turbine hot parts using a closed loop system is disclosed. Preferably, the present invention is applied to cooling the hot parts of combustion turbine power plants, and the cooling provided permits an increase in the inlet temperature and the concomitant benefits of increased efficiency and output. In preferred embodiments, methods and apparatus are disclosed wherein air is removed from the combustion turbine compressor and delivered to passages internal to one or more of a combustor and turbine hot parts. The air cools the combustor and turbine hot parts via convection and heat is transferred through the surfaces of the combustor and turbine hot parts. 1 fig.

Huber, D.J.; Briesch, M.S.

1998-07-21T23:59:59.000Z

228

Closed loop air cooling system for combustion turbines  

DOE Patents (OSTI)

Convective cooling of turbine hot parts using a closed loop system is disclosed. Preferably, the present invention is applied to cooling the hot parts of combustion turbine power plants, and the cooling provided permits an increase in the inlet temperature and the concomitant benefits of increased efficiency and output. In preferred embodiments, methods and apparatus are disclosed wherein air is removed from the combustion turbine compressor and delivered to passages internal to one or more of a combustor and turbine hot parts. The air cools the combustor and turbine hot parts via convection and heat is transferred through the surfaces of the combustor and turbine hot parts.

Huber, David John (North Canton, OH); Briesch, Michael Scot (Orlando, FL)

1998-01-01T23:59:59.000Z

229

Economical Analysis of the Cold Air Distribution System: A Case Study  

E-Print Network (OSTI)

In this paper, we briefly introduce the super cold air distribution technique. By comparing the schemes of two air conditioning systems, including a modified air conditioning system, this paper analyzes the technique parameters and the economics of the cold air distribution system in detail. The detailed analysis includes the air quality, comfort index, initial cost, life cost, static recycle period, and dynamic recycle period. The advantages and trends of super cold air distribution systems in the future are pointed out. The economical analysis and technical comparison is based on real data. The conclusion is useful for the design of super cold air conditioning systems of large shops and office buildings.

Zhou, Z.; Xu, W.; Li, J.; Zhao, J.; Niu, L.

2006-01-01T23:59:59.000Z

230

CLASSIFICATION OF THE MGR SITE COMPRESSED AIR SYSTEM  

SciTech Connect

The purpose of this analysis is to document the Quality Assurance (QA) classification of the Monitored Geologic Repository (MGR) site compressed air system structures, systems and components (SSCs) performed by the MGR Safety Assurance Department. This analysis also provides the basis for revision of YMP/90-55Q, Q-List (YMP 1998). The Q-List identifies those MGR SSCs subject to the requirements of DOE/RW-0333P, ''Quality Assurance Requirements and Description'' (QARD) (DOE 1998).

J.A. Ziegler

1999-08-31T23:59:59.000Z

231

Service center to test solar air-conditioning system  

Science Conference Proceedings (OSTI)

Field testing of an advanced solar-powered air-conditioning system developed under the joint Saudi Arabia-US Agreement for Cooperation in the Field of solar Energy (SOLERAS) will be conducted in Arizona over a three-phase 34-month perod. Participants in the program and their contribution are cited. The solar-Rankine alternative to conventional systems using electricity or fossil fuels. (DCK)

Not Available

1980-02-14T23:59:59.000Z

232

System transition : dynamics of change in the US air transportation system  

E-Print Network (OSTI)

The US Air Transportation System is currently facing a number of challenges including an increasing demand for travel and growing environmental requirements. In order to successfully meet future needs, the system will need ...

Mozdzanowska, Aleksandra L. (Aleksandra Ludmila), 1979-

2008-01-01T23:59:59.000Z

233

The air assault expeditionary force (AAEF) experiment: examining the impact of technology on battle command using live, virtual and constructive simulation  

Science Conference Proceedings (OSTI)

The AAEF Campaign of Discovery Experiments is the principal series of prototype discovery experiments conducted within the US Army. The campaign was originally approved for four annual excursions, 2004--2007, but has been tentatively extended through ... Keywords: air assault expeditionary force (AAEF), army test and evaluation command (ATEC), constructive, live, soldier battle laboratory (SBL), spiral C, virtual

Robert M. Lehnherr; Steven E. Strukel

2007-03-01T23:59:59.000Z

234

United States Air Force Academy (USAFA) Vertical Axis Wind Turbine. Final report May 77-Sep 80  

Science Conference Proceedings (OSTI)

This report describes the design, fabrication, installation and testing of a small variable-speed vertical axis wind turbine (VAWT). This VAWT is unique in its installation using hand tools only; unconventional and simple support system; and variable speed operation under microprocessor control. Initial testing confirmed that the turbine can be controlled by commanded alternator field modulation. Further studies will be directed toward determination of an optimum control algorithm.

Kullgren, T.E.; Wiedemeier, D.W.

1980-09-01T23:59:59.000Z

235

Detailed Field Evaluation of a Cold Air Distribution System: Volumes 1 and 2  

Science Conference Proceedings (OSTI)

When following report recommendations, the system investigated in this study would provide significant energy consumption savings over conventional 55 degrees F supply air systems. Reduced duct size requirements, moreover, promise greater system design flexibility without sacrificing space comfort conditions or indoor air quality. Demonstrating the viability of cold air distribution systems, the report includes suggestions for improving system performance and overall efficiency.

1990-02-01T23:59:59.000Z

236

Effectiveness of Shading Air-Cooled Condensers of Air-Conditioning Systems  

E-Print Network (OSTI)

In air-conditioning (A/C) systems with air-cooled condensers, the condensing unit has to be kept in the open for easy access to outdoor air in order to efficiently dissipate heat. During daytime, the solar radiation falling on the surfaces of the condenser and the high ambient temperatures can be detrimental for the energy performance. The effectiveness of shading the condensing unit to mitigate this adverse impact is investigated in this paper. A limiting analysis compares the performance of several A/C systems with ideal shade to those with ideal solar heat gain. The comparison is based on a theoretical model and data from equipment catalogs. The theoretical increase in the coefficient of performance (COP) due to shading is found to be within 2.5%. Furthermore, this small improvement in ideal efficiency decreases at higher ambient temperatures, when enhancements to efficiency are more needed. The actual efficiency improvement due to shading is not expected to exceed 1%, and the daily energy savings will be lower.

ElSherbini, A.; Maheshwari, G. P.

2010-01-01T23:59:59.000Z

237

Metering Air Compressor Systems for Efficiency: A Progress Report  

E-Print Network (OSTI)

Air compressors have energy efficiency quantified as SCFM/BHP. However, this efficiency fluctuates over a broad range based on the loading of the compressor. When multiple compressors operate with varying loads, as in a central plant, the overall system efficiency is totally unknown. With funding from California Energy Commission under the PIER Program, we spent considerable effort over the past few years to develop system efficiency for air compressor central plants. The system efficiency was termed CASE Index, which varies from 0 to about 320, and has the units of SCF/KWH. The procedure we developed, involved metering of input (KWH) and output (SCFM), in and out of the central plant. After the initial beta testing of the procedure, as more and more compressor professionals started to use the procedure and as more metering equipments entered the picture, some metering complications were encountered. These problems were dealt with and the procedure developed under this project can produce reliable data. This paper also presents the system efficiencies we have recorded so far and the opportunities they indicate. The data shows a wide range, from a low 82 to about 250 on a 0 to 320 scale. This confirms our expectations of large energy efficiency improvement potential in compressed air systems.

Joseph, B.

2005-01-01T23:59:59.000Z

238

Fuel Cell Systems Sensors Air Management Benchmarking Modeling  

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

Systems Systems F u e l P r o c e s s o r Sensors Air Management Benchmarking Modeling Patrick Davis Patrick Davis Targets and Status 50 kWe (net) Integrated Fuel Cell Power System 5000 2000 1000 Hours Durability 45 125 275 $/kW Cost (including H2 storage) 650 500 400 W/L Power density (w/o H2 stor) Operating on direct hydrogen 5000 2000 1000 Hours Durability 45 125 325 $/kW Cost 325 250 140 W/L Power density Operating on Tier 2 gasoline containing 30 ppm sulfur, average 2010 2005 2003 status Units Characteristics Projects Fuel Cell Power Systems Analysis ANL NREL TIAX Directed Technologies, Inc. TIAX TIAX * Fuel Cell Systems Analysis * Fuel Cell Vehicle Systems Analysis * Cost Analyses of Fuel Cell Stacks/ Systems * DFMA Cost Estimates of Fuel Cell/ Reformer Systems at Low, Medium, & High Production Rates * Assessment of Fuel Cell Auxiliary

239

Monitoring System Used to Optimize Compressed Air System Efficiency, Cut Costs  

E-Print Network (OSTI)

In 1994, Thomson Consumer Electronics (RCA), an international manufacturer of electronics equipment purchased a UtillTRACK Monitoring System for a plant in Indianapolis, Indiana. The system monitored gas and electric meters, substations, main feeders, and major equipment and systems including compressed air. For the compressed air system, monitored data included compressor amps, electrical demand and consumption, pressure and airflow. The resulting UtiliTRACK reports and graphs showed a significant variation in system efficiency depending upon the demand for air (day of week, time of day, production schedule) and which compressor or compressors were operating. By working with the boiler plant operators and making minor modifications to the existing compressor controls, the operating sequence was modified to maintain high system efficiency under all operating conditions. Monitored data after the changes were made showed a 20% reduction in compressed air system operating costs.

Holmes, W. A.

1998-04-01T23:59:59.000Z

240

Spider hero: a VR application using pulling force feedback system  

Science Conference Proceedings (OSTI)

The super hero has overwhelming speed and power. Especially, the greatest characteristic is his special ability. In our VR application, the user can jump from one building to another by using a web and being stuck to it like Spiderman, the famous ... Keywords: entertainment, force feedback, interaction, virtual reality

Ken Ishibashi; Toni Da Luz; Remy Eynard; Naoki Kita; Nan Jiang; Hiroshi Segi; Keisuke Terada; Kyohei Fujita; Kazunori Miyata

2009-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "forced air system" 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

Identifying Efficiency Degrading Faults in Split Air Conditioning Systems  

E-Print Network (OSTI)

Studies estimate that as much as 50% of packaged air conditioning systems operate in faulty conditions that degrade system efficiency. Common faults include: under- and over-charged systems (too much or too little refrigerant), faulty expansions valves (stuck valves, valve hunting, poorly tuned valve controllers), and fouled evaporators and condensers. Furthermore, air conditioning systems can often be adjusted to improve efficiency while continuing to meet cooling loads (adjusting system pressures, decreasing superheat setpoints). This study presents the design of a low cost device that can non-invasively measure system operating conditions, diagnose faults, estimate potential energy savings, and provide recommendations on how the system should be adjusted or repaired. Using eight external temperature measurements, the device potentially can detect and diagnose up to ten faults commonly found in HVAC systems. Steady state temperatures are compared to threshold values obtained from literature and HVAC manufacturers to detect and determine the severity of faults and subsequent reductions in coefficient of performance. Preliminary tests reveal the potential for the device to detect and diagnose common efficiency-degrading faults in HVAC systems.

Terrill, T. J.; Brown, M. L.; Cheyne, R. W. Jr.; Cousins, A. J.; Daniels, B. P.; Erb, K. L.; Garcia, P. A.; Leutermann, M. J.; Nel, A. J.; Robert, C. L.; Widger, S. B.; Williams, A. G.; Rasmussen, B. P.

2013-01-01T23:59:59.000Z

242

High Technology Centrifugal Compressor for Commercial Air Conditioning Systems  

Science Conference Proceedings (OSTI)

R&D Dynamics, Bloomfield, CT in partnership with the State of Connecticut has been developing a high technology, oil-free, energy-efficient centrifugal compressor called CENVA for commercial air conditioning systems under a program funded by the US Department of Energy. The CENVA compressor applies the foil bearing technology used in all modern aircraft, civil and military, air conditioning systems. The CENVA compressor will enhance the efficiency of water and air cooled chillers, packaged roof top units, and other air conditioning systems by providing an 18% reduction in energy consumption in the unit capacity range of 25 to 350 tons of refrigeration The technical approach for CENVA involved the design and development of a high-speed, oil-free foil gas bearing-supported two-stage centrifugal compressor, CENVA encompassed the following high technologies, which are not currently utilized in commercial air conditioning systems: Foil gas bearings operating in HFC-134a; Efficient centrifugal impellers and diffusers; High speed motors and drives; and System integration of above technologies. Extensive design, development and testing efforts were carried out. Significant accomplishments achieved under this program are: (1) A total of 26 builds and over 200 tests were successfully completed with successively improved designs; (2) Use of foil gas bearings in refrigerant R134a was successfully proven; (3) A high speed, high power permanent magnet motor was developed; (4) An encoder was used for signal feedback between motor and controller. Due to temperature limitations of the encoder, the compressor could not operate at higher speed and in turn at higher pressure. In order to alleviate this problem a unique sensorless controller was developed; (5) This controller has successfully been tested as stand alone; however, it has not yet been integrated and tested as a system; (6) The compressor successfully operated at water cooled condensing temperatures Due to temperature limitations of the encoder, it could not be operated at air cooled condensing temperatures. (7) The two-stage impellers/diffusers worked well separately but combined did not match well.

Ruckes, John

2006-04-15T23:59:59.000Z

243

Energy efficiency assessment methods and tools evaluation. Bolling Air Force Base. Revision 1  

SciTech Connect

The goal of the U.S. Department of Energy (DOE) Federal Energy Management Program (FEMP) is to facilitate energy-efficiency improvements at federal facilities. This is accomplished by a balanced program of technology development, facility assessment, and use of cost-sharing procurement mechanisms. Technology development focuses upon the tools, software, and procedures used to identify and evaluate energy-efficiency technologies and improvements. For facility assessment, FEMP provides metering equipment and trained analysts to federal agencies exhibiting a commitment to improve energy use efficiency. To assist in procurement of energy-efficiency measures, FEMP helps federal agencies devise and implement performance contracting and utility demand-side management strategies. Pacific Northwest Laboratory (PNL) supports the FEMP mission of energy systems modernization. Under this charter, the Laboratory and its contractors work with federal facility energy managers to assess and implement energy-efficiency improvements at federal facilities nationwide.

McMordie, K.L.; Richman, E.E.; Keller, J.M.; Dixon, D.R.

1995-05-01T23:59:59.000Z

244

Radiation Control Coatings Installed on Federal Buildings at Tyndall Air Force Base  

DOE Green Energy (OSTI)

The technical objectives of this CRADA comprise technology deployment and energy conservation efforts with the radiation control coatings industry and the utility sector. The results of this collaboration include a high-level data reporting, analysis and management system to support the deployment efforts. The technical objectives include successfully install, commission, operate, maintain and document the performance of radiation control coatings on roofs at Tyndall AFB and the Buildings Technology Center at the Oak Ridge National Laboratory; determine the life cycle savings that can be achieved by using radiation control coatings on entire roofs at Tyndall AFB, based on documented installed cost and operating maintenance costs with and without the coatings; determine if any specific improvements are required in the coatings before they can be successfully deployed in the federal sector; determine the most effective way to facilitate the widespread and rapid deployment of radiation control coatings in the federal sector; and clearly define any barriers to deployment.

Kaba, R.L.; Petrie, T.W.

1999-03-16T23:59:59.000Z

245

Modeling System Development for the Evaluation of Dynamic Air Quality  

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

Modeling System Development for the Evaluation of Dynamic Air Quality Modeling System Development for the Evaluation of Dynamic Air Quality Impacts of DER Speaker(s): Robert Van Buskirk Date: January 30, 2003 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Kristina LaCommare A critical challenge for the atmospheric sciences is to understand the anthropogenic impacts on atmospheric chemistry over spatial scales ranging from the urban to the regional, and ultimately to the global, and over corresponding time scales ranging from minutes to weeks and ultimately annual trends. A similar challenge for energy policymakers is to integrate an understanding of impact dynamics into the economic dynamics of energy supply and demand. The challenges of dynamic analysis of emissions impacts from the energy sector have substantially increased with a new

246

D-Zero Instrument Air System Humidity Transmitter Evaluation  

SciTech Connect

This report shows the findings that resulted in the purchase of the optimum dew point hygrometer for use in the D-Zero instrument air system (see diagram 2 on page 9). The hygrometer will monitor the air syste m to insure that the dew point level does not go above the normal operating output of the driers (this precise value will be determined during initial system start-up). The following criteria was used in the evaluation: (1) Long term durability; (2) Minimum calibration; (3) Indicate a dew point level down to -40 C accurately; (4) Designed to work in a low humidity region; (5) Minimum maintenance; (6) Fast response time; and (7) Lowest cost provided all other criteria is met.

Serges, T.J.; /Fermilab

1988-07-15T23:59:59.000Z

247

Liquid over-feeding air conditioning system and method  

DOE Patents (OSTI)

A refrigeration air conditioning system utilizing a liquid over-feeding operation is described. A liquid refrigerant accumulator-heat exchanger is placed in the system to provide a heat exchange relationship between hot liquid refrigerant discharged from condenser and a relatively cool mixture of liquid and vaporous refrigerant discharged from the evaporator. This heat exchange relationship substantially sub-cools the hot liquid refrigerant which undergoes little or no evaporation across the expansion device and provides a liquid over-feeding operation through the evaporator for effectively using 100 percent of evaporator for cooling purposes and for providing the aforementioned mixture of liquid and vaporous refrigerant. 1 figure.

Mei, V.C.; Chen, F.C.

1993-09-21T23:59:59.000Z

248

Liquid over-feeding air conditioning system and method  

DOE Patents (OSTI)

A refrigeration air conditioning system utilizing a liquid over-feeding operation is described. A liquid refrigerant accumulator-heat exchanger is placed in the system to provide a heat exchange relationship between hot liquid refrigerant discharged from condenser and a relatively cool mixture of liquid and vaporous refrigerant discharged from the evaporator. This heat exchange relationship substantially sub-cools the hot liquid refrigerant which undergoes little or no evaporation across the expansion device and provides a liquid over-feeding operation through the evaporator for effectively using 100 percent of evaporator for cooling purposes and for providing the aforementioned mixture of liquid and vaporous refrigerant.

Mei, Viung C. (Oak Ridge, TN); Chen, Fang C. (Knoxville, TN)

1993-01-01T23:59:59.000Z

249

Improving Energy Efficiency of Compressed Air System Based on System Audit  

E-Print Network (OSTI)

plan, formulate energy efficiency goals and adopt energyGO-102004-1926 [3] Energy Efficiency and Market Potential ofImproving Energy Efficiency of Compressed Air System Based

Shanghai, Hongbo Qin; McKane, Aimee

2008-01-01T23:59:59.000Z

250

[Environmental investigation of ground water contamination at Wright- Patterson Air Force Base, Ohio]. Volume 4, Health and Safety Plan (HSP); Phase 1, Task 4 Field Investigation report: Draft  

SciTech Connect

This Health and Safety Plan (HSP) was developed for the Environmental Investigation of Ground-water Contamination Investigation at Wright-Patterson Air Force Base near Dayton, Ohio, based on the projected scope of work for the Phase 1, Task 4 Field Investigation. The HSP describes hazards that may be encountered during the investigation, assesses the hazards, and indicates what type of personal protective equipment is to be used for each task performed. The HSP also addresses the medical monitoring program, decontamination procedures, air monitoring, training, site control, accident prevention, and emergency response.

Not Available

1991-10-01T23:59:59.000Z

251

Actuation of Micro-Optomechanical Systems Via Cavity-Enhanced Optical Dipole Forces  

E-Print Network (OSTI)

We demonstrate a new type of optomechanical system employing a movable, micron-scale waveguide evanescently-coupled to a high-Q optical microresonator. Micron-scale displacements of the waveguide are observed for milliwatt(mW)-level optical input powers. Measurement of the spatial variation of the force on the waveguide indicates that it arises from a cavity-enhanced optical dipole force due to the stored optical field of the resonator. This force is used to realize an all-optical tunable filter operating with sub-mW control power. A theoretical model of the system shows the maximum achievable force to be independent of the intrinsic Q of the optical resonator and to scale inversely with the cavity mode volume, suggesting that such forces may become even more effective as devices approach the nanoscale.

Matt Eichenfield; Christopher P. Michael; Raviv Perahia; Oskar Painter

2007-02-26T23:59:59.000Z

252

Hybrid membrane--PSA system for separating oxygen from air  

Science Conference Proceedings (OSTI)

A portable, non-cryogenic, oxygen generation system capable of delivering oxygen gas at purities greater than 98% and flow rates of 15 L/min or more is described. The system consists of two major components. The first component is a high efficiency membrane capable of separating argon and a portion of the nitrogen content from air, yielding an oxygen-enriched permeate flow. This is then fed to the second component, a pressure swing adsorption (PSA) unit utilizing a commercially available, but specifically formulated zeolite compound to remove the remainder of the nitrogen from the flow. The system is a unique gas separation system that can operate at ambient temperatures, for producing high purity oxygen for various applications (medical, refining, chemical production, enhanced combustion, fuel cells, etc . . . ) and represents a significant advance compared to current technologies.

Staiger, Chad L. (Albuquerque, NM); Vaughn, Mark R. (Albuquerque, NM); Miller, A. Keith (Albuquerque, NM); Cornelius, Christopher J. (Blackburg, VA)

2011-01-25T23:59:59.000Z

253

On possibility to observe new fundamental forces in open quantum systems  

E-Print Network (OSTI)

A possibility and peculiarities of registration of new fundamental forces in open quantum systems are discussed. As a possible example, variations of decay rates of radioactive elements reported in scientific literature are considered in detail.

B. F. Kostenko; M. Z. Yuriev

2006-05-12T23:59:59.000Z

254

Distributed Forcing of Forecast and Assimilation Error Systems  

Science Conference Proceedings (OSTI)

Temporally distributed deterministic and stochastic excitation of the tangent linear forecast system governing forecast error growth and the tangent linear observer system governing assimilation error growth is examined. The method used is to ...

Brian F. Farrell; Petros J. Ioannou

2005-02-01T23:59:59.000Z

255

Health assessment for Ellsworth Air Force Base, Ellsworth AFB, Pennington County, South Dakota, Region 8. Cerclis No. SD2571924644. September 30, 1993. Final report  

SciTech Connect

Ellsworth Air Force Base (EAFB) is a 4,858 acre facility in southwestern South Dakota, 5.7 miles northeast of Rapid City. EAFB has handled or disposed of general refuse, construction debris, and hazardous chemicals (primarily fuels and solvents) since it was activated in July of 1942. ATSDR has determined that EAFB is an indeterminate public health hazard because all of the information needed to evaluate the health hazards posed by the nine sites on EAFB has not been collected.

1993-09-30T23:59:59.000Z

256

Experimental Investigation on the Operation Performance of a Liquid Desiccant Air-conditioning System  

E-Print Network (OSTI)

A large share of energy consumption is taken by an air-conditioning system. It worsens the electricity load of the power network. Therefore, more and more scholars are paying attention to research on new types of air-conditioning systems that are energy- saving and environment-friendly. A liquid desiccant air conditioning system is among them, as it has a tremendous ability for power storage and low requirements for heat resources. Heat with low temperatures, such as excess heat, waste heat, and solar power, is suitable for the liquid desiccant air-conditioning system. The feasibility and economical efficiency of the system are studied in this experimental research. The result shows that when the temperature of the regeneration is about 80?, the thermodynamic coefficient of the system is about 0.6, and the supply air temperature of the air-conditioning system remains stable at 21?, the air-conditioning system can meet human comfort levels.

Liu, J.; Wang, J.; Wu, Z.; Gu, W.; Zhang, G.

2006-01-01T23:59:59.000Z

257

Energy studies on central and variable refrigerant flow air-conditioning systems  

Science Conference Proceedings (OSTI)

Air-conditioning is a major contributor to energy end-use in commercial buildings. Different types of airconditioning systems are installed in commercial buildings including packaged systems

2012-01-01T23:59:59.000Z

258

Sitraer 7 (2008) LXIV-LXXIV TECHNOLOGY ROADMAP FOR THE FUTURE AIR TRANSPORT SYSTEM  

E-Print Network (OSTI)

Sitraer 7 (2008) LXIV- LXXIV LXIV TECHNOLOGY ROADMAP FOR THE FUTURE AIR TRANSPORT SYSTEM BEING and the operation of aircraft within a future air transportation system achieving these objectives. The conclusion Universität Berlin Department of Aeronautics and Astronautics Chair of Flight Guidance and Air Transportation

Berlin,Technische Universität

259

Air-Cooled Condensers in Next-Generation Conversion Systems Geothermal...  

Open Energy Info (EERE)

Air-Cooled Condensers in Next-Generation Conversion Systems Geothermal Lab Call Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Air-Cooled...

260

An Analysis of the Dynamics of the US Commercial Air Transportation System  

E-Print Network (OSTI)

Major trends in the airline industry are analyzed to highlight key dynamics that govern the US domestic air transportation system. The hypothesis is that air travel supply and demand equilibriums, a reliance on outside ...

Tam, Ryan

Note: This page contains sample records for the topic "forced air system" 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

Electrical applications for air conditioning and refrigeration systems  

Science Conference Proceedings (OSTI)

Electrical troubleshooting is possibly the most neglected area of maintaining air conditioning and refrigeration equipment. This text explains and illustrates methods for troubleshooting the full spectrum of electrical or electronic circuits of these systems. Comprehensive sections offer coverage of electrical fundamentals, single-phase electric motors, three-phase motors, control devices, electrical control circuits, use of schematic diagrams in troubleshooting, ice makers, solid state electronics, and basic electronic controls. The author`s clear, concise coverage of controls enables one to quickly understand both how a specific type of control works, and how it is used in the system. The reader will find a wealth of useful instructions for making operational checks and troubleshooting for proper operation. The book is conveniently divided into application-specific units, making it easy to quickly find information specific to a particular job at hand.

Langley, B.C.

1999-09-01T23:59:59.000Z

262

Linking the Eta Model with the Community Multiscale Air Quality (CMAQ) Modeling System to Build a National Air Quality Forecasting System  

Science Conference Proceedings (OSTI)

NOAA and the U.S. Environmental Protection Agency (EPA) have developed a national air quality forecasting (AQF) system that is based on numerical models for meteorology, emissions, and chemistry. The AQF system generates gridded model forecasts ...

Tanya L. Otte; George Pouliot; Jonathan E. Pleim; Jeffrey O. Young; Kenneth L. Schere; David C. Wong; Pius C. S. Lee; Marina Tsidulko; Jeffery T. McQueen; Paula Davidson; Rohit Mathur; Hui-Ya Chuang; Geoff DiMego; Nelson L. Seaman

2005-06-01T23:59:59.000Z

263

Model Based Sensor System for Temperature Measurement in R744 Air Conditioning Systems  

E-Print Network (OSTI)

The goal is the development of a novel principle for the temperature acquisition of refrigerants in CO2 air conditioning systems. The new approach is based on measuring the temperature inside a pressure sensor, which is also needed in the system. On the basis of simulative investigations of different mounting conditions functional relations between measured and medium temperature will be derived.

Reitz, Sven; Schneider, Peter

2008-01-01T23:59:59.000Z

264

Aspects of forced convective heat transfer in geothermal systems  

DOE Green Energy (OSTI)

A knowledge of convective heat transfer is essential to understanding geothermal systems and other systems of moving groundwater. A simple, kinematic approach toward convective heat transfer is taken here. Concern is not with the cause of the groundwater motion but only with the fact that the water is moving and transferring heat. The mathematical basis of convective heat transfer is the energy equation which is a statement of the first law of thermodynamics. The general solution of this equation for a specific model of groundwater flow has to be done numerically. The numerical algorithm used here employs a finite difference approximation to the energy equation that uses central differences for the heat conduction terms and one-sided differences for the heat convection terms. Gauss--Seidel iteration is then used to solve the finite difference equation at each node of a non-uniform mesh. The Monroe and Red Hill hot springs, a small hydrothermal system in central Utah, provide an example to illustrate the application of convective heat transfer theory to a geophysical problem. Two important conclusions regarding small geothermal systems follow immediately from the results of this application. First, the most rapid temperature rise in the convecting part of a geothermal system is near the surface. Below this initially rapid temperature increase the temperature increases very slowly, and thus temperatures extrapolated from shallow boreholes can be seriously in error. Second, the temperatures and heat flows observed at Monroe and Red Hill, and probably at many other small geothermal areas, can easily result from moderate vertical groundwater velocities in faults and fracture zones in an area of normal heat flow.

Kilty, K.; Chapman, D.S.; Mase, C.

1978-07-01T23:59:59.000Z

265

Analysis of Energy Saving in a Clean Room Air-conditioning System  

E-Print Network (OSTI)

To address the issue of the substantial energy cost and operating cost of an all-return air system for a clean room, we changed the former system to a 2nd return air system. With the newest building energy simulation program, Energy Plus, we simulated and compared the summer energy consuming conditions of the two systems. Results prove the superiority of the 2nd return air system, and the validity of the simulation. Also, the air system energy performance in summer was illustrated with typical meteorological hour-to-hour data.

Liu, S.; Liu, J.; Pei, J.; Wang, M.

2006-01-01T23:59:59.000Z

266

A study of pressure losses in residential air distribution systems  

Science Conference Proceedings (OSTI)

An experimental study was conducted to evaluate the pressure drop characteristics of residential duct system components that are either not available or not thoroughly (sometimes incorrectly) described in existing duct design literature. The tests were designed to imitate cases normally found in typical residential and light commercial installations. The study included three different sizes of flexible ducts, under different compression configurations, splitter boxes, supply boots, and a fresh air intake hood. The experimental tests conformed to ASHRAE Standard 120P--''Methods of Testing to Determine Flow Resistance of HVAC Air Ducts and Fittings''. The flexible duct study covered compressibility and bending effects on the total pressure drop, and the results showed that the available published references tend to underestimate the effects of compression in flexible ducts that can increase pressure drops by up to a factor of nine. The supply boots were tested under different configurations including a setup where a flexible duct elbow connection was considered as an integral part of the supply boot. The supply boots results showed that diffusers can increase the pressure drop by up to a factor of two in exit fittings, and the installation configuration can increase the pressure drop by up to a factor of five. The results showed that it is crucial for designers and contractors to be aware of the compressibility effects of the flexible duct, and the installation of supply boots and diffusers.

Abushakra, Bass; Walker, Iain S.; Sherman, Max H.

2002-07-01T23:59:59.000Z

267

The Effect of Pressure Difference Control on Hydraulic Stability in a Variable Flow Air Conditioning System  

E-Print Network (OSTI)

This paper analyzes the effects of different pressure difference control methods on hydraulic stability in a variable flow air conditioning system when it is applied to different air conditioning water systems. According to control method and water system, it can be divided into direct return system pass-by control, direct return system terminal control, reversed return system pass-by control and reversed return system terminal control. The results indicate that reversed return system terminal control has the best hydraulic stability.

Zhang, Z.; Fu, Y.; Chen, Y.

2006-01-01T23:59:59.000Z

268

Solar liquid-desiccant air-conditioning system. Final report  

DOE Green Energy (OSTI)

A design for a closed, diurnal, intermittent absorption chiller for passive solar air-conditioning using liquid sorbents has been constructed and tested. LiBr-H/sub 2/O will not work with this design because of its low vapor pressure at the temperature available. The approach has possibilities using the 2 LiBr-ZrBr-CH/sub 3/OH or H/sub 2/O-NH/sub 3/ sorbent refrigerant pairs. The use of H/sub 2/O-NH/sub 3/ appears to be the better candidate because of the lower solution viscosity and less cycle weight, through tank volumes and collector requirements are similar. Further study of other refrigerant pairs such as S-Thiocyanate-ammonia is indicated, however, the difficulties encountered in construction and low potential coefficient of performance, and thus large collection area needed, makes commercialization of such a system doubtful in the foreseeable future.

Not Available

269

Casimir force for absorbing media in an open quantum system framework: Scalar model  

SciTech Connect

In this article we compute the Casimir force between two finite-width mirrors at finite temperature, working in a simplified model in 1+1 dimensions. The mirrors, considered as dissipative media, are modeled by a continuous set of harmonic oscillators which in turn are coupled to an external environment at thermal equilibrium. The calculation of the Casimir force is performed in the framework of the theory of open quantum systems. It is shown that the Casimir interaction has two different contributions: the usual radiation pressure from the vacuum, which is obtained for ideal mirrors without dissipation or losses, and a Langevin force associated with the noise induced by the interaction between dielectric atoms in the slabs and the thermal bath. Both contributions to the Casimir force are needed in order to reproduce the analogous Lifshitz formula in 1+1 dimensions. We also discuss the relationship between the electromagnetic properties of the mirrors and the spectral density of the environment.

Lombardo, Fernando C.; Rubio Lopez, Adrian E. [Departamento de Fisica Juan Jose Giambiagi, FCEyN UBA and IFIBA CONICET, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellon I, 1428 Buenos Aires (Argentina); Mazzitelli, Francisco D. [Departamento de Fisica Juan Jose Giambiagi, FCEyN UBA and IFIBA CONICET, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellon I, 1428 Buenos Aires (Argentina); Centro Atomico Bariloche Comision Nacional de Energia Atomica, R8402AGP Bariloche (Argentina)

2011-11-15T23:59:59.000Z

270

A Comparison of Atmospheric Reanalysis Surface Products over the Ocean and Implications for Uncertainties in AirSea Boundary Forcing  

E-Print Network (OSTI)

This paper investigates the uncertainties related to atmospheric fields from reanalysis products used in forcing ocean models. Four reanalysis products, namely from 1) the interim ECMWF Re-Analysis (ERA-Interim), 2) version ...

Chaudhuri, Ayan H.

271

A Comparison of Atmospheric Reanalysis Surface Products over the Ocean and Implications for Uncertainties in AirSea Boundary Forcing  

Science Conference Proceedings (OSTI)

This paper investigates the uncertainties related to atmospheric fields from reanalysis products used in forcing ocean models. Four reanalysis products, namely from 1) the interim ECMWF Re-Analysis (ERA-Interim), 2) version 2 of the Common ...

Ayan H. Chaudhuri; Rui M. Ponte; Gael Forget; Patrick Heimbach

2013-01-01T23:59:59.000Z

272

An overview of solar assisted air-conditioning system application in small office buildings in Malaysia  

Science Conference Proceedings (OSTI)

In many regions of the world especially tropical weather in Malaysia, the demand for cooling of indoor air is growing due to increasing comfort expectations and increasing cooling loads. Air-conditioning, the most common cooling mechanism for providing ... Keywords: Malaysian climatic conditions, absorption chiller, evacuated tube solar collector, high energy consumption, peak load demand, solar assisted air conditioning system, solar energy

Lim Chin Haw; Kamaruzzaman Sopian; Yusof Sulaiman

2009-02-01T23:59:59.000Z

273

COMPRESSED-AIR ENERGY STORAGE SYSTEMS FOR STAND-ALONE OFF-GRID PHOTOVOLTAIC MODULES  

E-Print Network (OSTI)

-storage materials, flywheels, pumped hydro (PH), superconducting magnetic energy storage (SMES) and compressed airCOMPRESSED-AIR ENERGY STORAGE SYSTEMS FOR STAND-ALONE OFF-GRID PHOTOVOLTAIC MODULES Dominique, USA ABSTRACT In this work, a low-cost, low-volume, low-maintenance, small-scale compressed-air energy

Deymier, Pierre

274

Dynamic modeling and global optimal operation of multizone variable air volume HVAC systems.  

E-Print Network (OSTI)

??Energy conservation and indoor environment concerns have motivated extensive research on various aspects of control of Heating, Ventilating and Air-Conditioning (HVAC) and building systems. The (more)

Zheng, Guo Rong

1997-01-01T23:59:59.000Z

275

Active improvement of air-conditioning system energy consumption with adaptive thermal comfort approach.  

E-Print Network (OSTI)

??The MSc research project aims to suggest improvements to building air-conditioning control systems, to reduce energy consumption while maintaining the comfort level of the occupants. (more)

Muhammad Saleh, Muhammad Fadzli

2013-01-01T23:59:59.000Z

276

Superheat control for air conditioning and refrigeration systems: Simulation and experiments.  

E-Print Network (OSTI)

??Ever since the invention of air conditioning and refrigeration in the late nineteenth century, there has been tremendous interest in increasing system efficiency to reduce (more)

Otten, Richard J.

2010-01-01T23:59:59.000Z

277

Analysis of the Energy Consumption of VAV System in Different Supply Air Control Strategies  

Science Conference Proceedings (OSTI)

Variable air volume (VAV) system has been widely applied due to its characteristics of eminent energy saving and thermal comfort. Because of its above characteristics, sophisticated automatic control systems are required to support its operation. While ... Keywords: VAV A/C system, supply air control strategy, energy consumption analysis

Junjie Guo, Xiangxin Cheng

2012-07-01T23:59:59.000Z

278

Environmental policymaking for air transportation : toward an emissions trading system.  

E-Print Network (OSTI)

??Aviation is at a turning point. Considerable improvements in aircraft emissions efficiencies are expected through technological improvements, air traffic management, and managerial strategies. But global (more)

De Serres, Martine.

2007-01-01T23:59:59.000Z

279

Heat transfer pathways in underfloor air distribution (UFAD) systems  

E-Print Network (OSTI)

displacement venti- lation. ASHRAE Transactions 105(1):298309. ASHRAE Transactionsunderfloor air supply plenums. ASHRAE Trans- actions 112(2).

Bauman, F.; Jin, H.; Webster, T.

2006-01-01T23:59:59.000Z

280

Simulation of energy performance of underfloor air distribution (UFAD) systems  

E-Print Network (OSTI)

energy consumption and the peak demand were calculated usingand also in the reduction of peak demand HVAC annual energymeasure to reduce peak demand. Key words Underfloor air

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "forced air system" 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

Multistability and hysteresis in the climate-cryosphere system under orbital forcing  

E-Print Network (OSTI)

of the transitions between the two states depend on parameterizations of ice-sheet dynamics, but are rather] demonstrated hysteresis of the Antarctic ice sheet in the phase space of atmospheric CO2 concentration-cryosphere system in the phase space of Milankovitch forcing (maximum summer insolation at 65°N, abbreviated as MF

Calov, Reinhard

282

Air source heat pump system for drying application  

Science Conference Proceedings (OSTI)

This paper investigates the performance of an air source heat pump for drying purpose. In order to evaluate the performance analysis; a simulation study has been done. The results of simulation of heat pump dryer for different evaporator temperatures ... Keywords: air source heat pump, coefficient of performance (COP), condenser temperature and compressor work, dryer, evaporator temperature

R. Daghigh; M. H. Ruslan; A. Zaharim; K. Sopian

2010-10-01T23:59:59.000Z

283

Management impact assessment of refuse-derived fuel implementation at Wright-Patterson Air Force Base. Final report 30 Sep 80-11 Mar 81  

Science Conference Proceedings (OSTI)

This study has shown that the impact of specifying, procuring, using, and monitoring refuse-derived fuel (RDF) on the organizational structure and the operations and management activities of Wright-Patterson Air Force Base has been generally minimal and essentially absorbed into the various ongoing functional activities. However, the project manager devoted over 75 percent of his time to the program since it started and additional housecleaning personnel were assigned to the operating staff to remove the dust and debris resulting from the RDF. The research and development nature of this particular activity contributes to the necessity of having a project manager with time to keep the program on track and interested persons informed as to its progress. Weather this impact would be reflected in follow-on implementation programs is problematic and dependent upon how the program is viewed locally, the need for further RandD, and the visibility required or desired. The level of effort dedicated to this project was 5.6 man-years the first year and is expected to be 4.0 man-years the second year. The associated salary costs are $130,500 and $86,500, respectively. An assessment of the applicability of CITA to the operation of the RDF facility at WPAFB indicates that this and other Air Force central heating plants will be reviewed for possible contract operation in FY 1984.

Huff, W.J.; McIntosh, R.K.

1982-03-19T23:59:59.000Z

284

A Model of the AirSea Momentum Flux and Breaking-Wave Distribution for Strongly Forced Wind Waves  

Science Conference Proceedings (OSTI)

Under high-wind conditions, breaking surface waves likely play an important role in the airsea momentum flux. A coupled windwave model is developed based on the assumption that in the equilibrium range of surface wave spectra the wind stress is ...

Tobias Kukulka; Tetsu Hara; Stephen E. Belcher

2007-07-01T23:59:59.000Z

285

Fault Diagnosis of an Air-Conditioning System Using LS-SVM  

Science Conference Proceedings (OSTI)

This paper describes fault diagnosis of an air-conditioning system for improving reliability and guaranteeing the thermal comfort and energy saving. To achieve this goal, we proposed a technique which is model based fault diagnosis technique. Here, a ... Keywords: Air-Conditioning System, FDD, LS-SVM, Residuals generator

Mahendra Kumar; I. N. Kar

2009-12-01T23:59:59.000Z

286

Impact of the Variable Refrigerant Volume Air Conditioning System on Building Energy Efficiency  

E-Print Network (OSTI)

The application of the variable refrigerant volume multi-zone air conditioning systems has met with mixed results since the publication of the Design Standard for Energy Efficiency of Public Buildings. This paper analyzes the characteristics of the variable refrigerant volume multi-zone air conditioning system, and discusses the advantages of its application.

Zhu, H.

2006-01-01T23:59:59.000Z

287

A Computer-Controlled Continuous Air Drying and Flask Sampling System  

Science Conference Proceedings (OSTI)

A computer-controlled continuous air drying and flask sampling system has been developed and is discussed here. This system is set up for taking air samples automatically at remote places. Twenty glass flasks can be connected one by one or in ...

R. E. M. Neubert; L. L. Spijkervet; J. K. Schut; H. A. Been; H. A. J. Meijer

2004-04-01T23:59:59.000Z

288

Intelligent Residential Air-Conditioning System with Smart-Grid Functionality  

E-Print Network (OSTI)

1 Intelligent Residential Air-Conditioning System with Smart-Grid Functionality Auswin George residential air-conditioning (A/C) system controller that has smart grid functionality. The qualifier, conditional on anticipated retail energy prices. The term "smart- grid functionality" means that retail energy

Tesfatsion, Leigh

289

Air Distribution Systems and Cross-Infection Risk in the Hospital Sector  

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

Air Distribution Systems and Cross-Infection Risk in the Hospital Sector Air Distribution Systems and Cross-Infection Risk in the Hospital Sector Speaker(s): Peter V. Nielsen Date: November 28, 2012 - 12:00pm Location: 90-4133 Seminar Host/Point of Contact: Rongxin Yin We protect ourselves from airborne cross-infection in the indoor environment by supplying fresh air to the room by natural or mechanical ventilation. The air is distributed in the room according to different principles as e.g. mixing ventilation, downward ventilation, displacement ventilation, etc. A large amount of air is supplied to the room to ensure dilution of airborne infection. The talk discusses both the macroenvironment and the microenvironment. The macroenvironment is the conditions created by the air distribution system, and the microenvironment is the conditions created by the local flow around persons in combination

290

Test and Reconstruction of Air Conditioning System in a Hotel Lobby  

E-Print Network (OSTI)

Two air conditioning systems are equipped in a hotel lobby. It is found from the field test that the actual air rate is 40% and 16% of the nominal value, respectively, of the two systems, which is far lower than the design requirement. The air rate of the outlets varies greatly, and the coefficient of uniformity is 129.1% and 111.6% respectively of the two systems. Air distribution in the lobby is bad and thermal comfort is poor. Moreover, sharp reduction of return air makes portions of fresh air increase, which will lead to high energy consumption. Reconstruction is carried out to improve the thermal environment with the assistance of the CFD method. First, the original system is simulated by CFD method to verify the CFD method and propose modification suggestions. Then air conditioning load and air rate of the lobby is recalculated and duct redesigned. Simulation results show that the air distribution and thermal comfort of the improved scheme can meet the design requirement. The reconstructed system has been running for about two years and has shown good performance.

Wang, G.; Hu, Y.; Hu, S.; Chen, Q.

2006-01-01T23:59:59.000Z

291

A review of dynamic stability of repulsive-force maglev suspension systems  

DOE Green Energy (OSTI)

Vehicle dynamics and the need to satisfy ride quality requirements have long been recognized as crucial to the commercial success of passenger-carrying transportation systems. Design concepts for maglev systems are no exception. Early maglev investigators and designers were well aware of the importance of ride quality and took care to ensure that their designs would meet acceptable ride quality standards. In contrast, the dynamic stability of electrodynamic suspension (EDS) systems, which has obvious implications for system safety and cost as well as for ride quality, has not received nearly as much attention. Because of the well-known under-damped nature of EDS suspension systems and the observation of instabilities in laboratory-scale model systems, it is prudent to develop a better understanding of vehicle stability characteristics. The work reported in this was undertaken with the intention of summarizing information that has been accumulated worldwide and that is relevant to dynamic stability of repulsive-force maglev suspension systems, assimilating that information, and gaining an understanding of the factors that influence that stability. Included in the paper is a discussion and comparison of results acquired from some representative tests of large-scale vehicles on linear test tracks, together with analytical and laboratory-scale investigations of stability and dynamics of EDS systems. This paper will also summarize the R and D activities at Argonne National Laboratory (ANL) since 1991 to study the nature of the forces that are operative in an EDS system and the dynamic stability of such systems.

Cai, Y.; Rote, D.M.

1998-07-01T23:59:59.000Z

292

Forced convective flow and heat transfer of upward cocurrent air-water slug flow in vertical plain and swirl tubes  

SciTech Connect

This experimental study comparatively examined the two-phase flow structures, pressured drops and heat transfer performances for the cocurrent air-water slug flows in the vertical tubes with and without the spiky twisted tape insert. The two-phase flow structures in the plain and swirl tubes were imaged using the computerized high frame-rate videography with the Taylor bubble velocity measured. Superficial liquid Reynolds number (Re{sub L}) and air-to-water mass flow ratio (AW), which were respectively in the ranges of 4000-10000 and 0.003-0.02 were selected as the controlling parameters to specify the flow condition and derive the heat transfer correlations. Tube-wise averaged void fraction and Taylor bubble velocity were well correlated by the modified drift flux models for both plain and swirl tubes at the slug flow condition. A set of selected data obtained from the plain and swirl tubes was comparatively examined to highlight the impacts of the spiky twisted tape on the air-water interfacial structure and the pressure drop and heat transfer performances. Empirical heat transfer correlations that permitted the evaluation of individual and interdependent Re{sub L} and AW impacts on heat transfer in the developed flow regions of the plain and swirl tubes at the slug flow condition were derived. (author)

Chang, Shyy Woei [Thermal Fluids Laboratory, National Kaohsiung Marine University, No. 142, Haijhuan Road, Nanzih District, Kaohsiung City 81143 (China); Yang, Tsun Lirng [Department of Marine Engineering, National Kaohsiung Marine University, No. 142, Haijhuan Road, Nanzih District, Kaohsiung City 81143 (China)

2009-10-15T23:59:59.000Z

293

Air cooled turbine component having an internal filtration system  

DOE Patents (OSTI)

A centrifugal particle separator is provided for removing particles such as microscopic dirt or dust particles from the compressed cooling air prior to reaching and cooling the turbine blades or turbine vanes of a turbine engine. The centrifugal particle separator structure has a substantially cylindrical body with an inlet arranged on a periphery of the substantially cylindrical body. Cooling air enters centrifugal particle separator through the separator inlet port having a linear velocity. When the cooling air impinges the substantially cylindrical body, the linear velocity is transformed into a rotational velocity, separating microscopic particles from the cooling air. Microscopic dust particles exit the centrifugal particle separator through a conical outlet and returned to a working medium.

Beeck, Alexander R. (Orlando, FL)

2012-05-15T23:59:59.000Z

294

Air Pollution Control Systems for Stack and Process Emissions  

Science Conference Proceedings (OSTI)

Strict environmental regulations at the federal and local levels require that industrial facilities control emissions of particulates, nitrogen oxides (NOx), sulfur dioxide (SO2), volatile organic compounds (VOCs), and hazardous air pollutants. To comply with regulations, industries must either modify the processes or fuels they use to limit the generation of air pollutants, or remove the pollutants from the process gas streams before release into the atmosphere. This report provides a comprehensive disc...

2001-03-30T23:59:59.000Z

295

An inlet air washer/chiller system for combined cycle planet repowering  

Science Conference Proceedings (OSTI)

A conditioning method to achieve increased output at any relative humidity condition is an air washer and absorption chiller arrangement. At elevated temperatures and low humidity, the air washer operates as an evaporative cooler without the chiller in operation. In this mode, the air washer will give similar results as a media type evaporative cooler at a fraction of the pressure loss. In the air washer plus chiller operating mode the chiller maintains cooling effectiveness of the air washer during periods of high relative humidity. This makes such a system very appropriate anywhere relative humidity is high. Many combined cycle plants utilize supplemental firing of the heat recovery steam generators to offset the loss of gas turbine power at high ambient temperatures. This paper shows that in contrast to supplementary firing, the combination air washer/chiller system can generate power more efficiently and at lower cost.

Sengupta, U.; Soroka, G. (Bechtel Power Corp., Gaithersburg, MD (USA))

1989-01-01T23:59:59.000Z

296

Assessment of Advanced Air Purification Technologies: Filtration and Hybrid Systems for Residential and Commercial Applications  

Science Conference Proceedings (OSTI)

Indoor air contaminants, such as microorganisms, allergens, environmental tobacco smoke, and volatile organic compounds, can cause health- and productivity-related problems for the occupants of the indoor space. Children, elderly adults, and people with deficient immune systems are especially likely to be affected by contaminated air. There are three primary measures to control indoor air contamination. The first is to eliminate the contaminant source. The second is to control ventilation within the spac...

2003-01-20T23:59:59.000Z

297

CFD Simulation and Analysis of the Combined Evaporative Cooling and Radiant Ceiling Air-conditioning System  

E-Print Network (OSTI)

Due to such disadvantages as large air duct and high energy consumption of the current all- outdoor air evaporative cooling systems used in the dry region of Northwest China, as well as the superiority of the ceiling cooling system in improving thermal comfort and saving energy, a combined system is presented in this paper. It combines an evaporative cooling system with ceiling cooling, in which the evaporative cooling system handles the entire latent load and one part of the sensible loads, and the ceiling cooling system deals with the other part of sensible loads in the air-conditioned zone, so that the condensation on radiant panels and the insufficiency of cooling capacity can be avoided. The cooling water at 18? used in the cooling coils of ceiling cooling system can be ground water, tap water or the cooled water from cooling towers in the summer. This new air-conditioning system and existing all- outdoor air evaporative cooling system are applied to a project in the city of Lanzhou. Energy consumption analysis of the building is carried out using the energy consumption code. Velocity and temperature distribution in the air-conditioned zone is computed using CFD. According to the results, the energy consumption and indoor human thermal comfort of both systems are then compared. It is concluded that the new system occupies less building space, reduces energy consumption, improves indoor human thermal comfort and saves initial investment.

Xiang, H.; Yinming, L.; Junmei, W.

2006-01-01T23:59:59.000Z

298

S-Security Protective Force and Systems Services for the Nevada Site  

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

S-Security Protective Force and Systems Services for the Nevada Site S-Security Protective Force and Systems Services for the Nevada Site Office Solicitation Number: DE-SOL-0002014 Agency: Department of Energy Office: Federal Locations Location: All DOE Federal Contracting Offices Notice Type: Modification/Amendment Original Posted Date: June 22, 2010 Posted Date: June 13, 2011 Response Date: Jul 13, 2011 5:00 pm Mountain Original Response Date: July 7, 2010 Archiving Policy: Manual Archive Original Archive Date: August 6, 2010 Archive Date: - Original Set Aside: N/A Set Aside: N/A Classification Code: S -- Utilities and housekeeping services NAICS Code: 561 -- Administrative and Support Services/561612 -- Security Guards and Patrol Services Solicitation Number: DE-SOL-0002014 Notice Type:

299

Feasibility Study of Economics and Performance of Biopower at the Chanute Air Force Base in Rantoul, Illinois. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Former Chanute Air Force Base site in Rantoul, Illinois, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) was contacted to provide technical assistance for this project. The purpose of this study was to assess the site for a possible biopower system installation and estimate the cost, performance, and impacts of different biopower options.

Scarlata, C.; Mosey, G.

2013-05-01T23:59:59.000Z

300

Economic Analysis of a Waste Water Resource Heat Pump Air-Conditioning System in North China  

E-Print Network (OSTI)

This paper describes the situation of waste water resource in north China and the characteristics and styles of a waste water resource heat pump system, and analyzes the economic feasibility of a waste water resource heat pump air-conditioning system including investment, operating fee and pay-back time. The results show that waste water resource heat pump air-conditioning system has a low investment, low operating fee and short payback time.

Chen, H.; Li, D.; Dai, X.

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "forced air system" 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

An aerial radiological survey of the Kennedy Space Center and Cape Canaveral Air Force Station and surrounding area, Titusville, Florida: Date of survey: October 1985  

Science Conference Proceedings (OSTI)

An aerial radiological survey of the entire Kennedy Space Center (KSC) and Cape Canaveral Air Force Station (CCAFS) was performed during the period 9 through 23 October 1985. This survey was conducted in three parts. First, a low resolution, low sensitivity background survey was performed that encompassed the entire KSC and CCAFS area. Next, two smaller, high resolution, high sensitivity surveys were conducted: the first focused on Launch Complexes 39A and 39B, and the second on the Shuttle Landing Facility. The areas encompassed by the surveys were 200, 5.5, and 8.5 square miles (500, 14, and 22 sq km), respectively. The purpose of these surveys was to provide information useful for an emergency response to a radiological accident. Results of the background survey are presented as isoradiation contour maps of both total exposure rate and man-made gross count superimposed on a mosaic of recent aerial photographs. Results of the two small, detailed surveys are also presented as an isoradiation contour map of exposure rate on the aerial photograph base. These data were evaluated to establish sensitivity limits for mapping the presence of plutonium-238. Natural background exposure rates at the Kennedy Space Center and Cape Canaveral Air Force Station are very low, generally ranging from 4 to 6.5 microroentgens per hour (..mu..R/h) and less than 4 ..mu..R/h in wet areas. However, exposure rates in developed areas were observed to be higher due to the importation of construction materials not characteristic of the area. 8 refs., 3 figs., 4 tabs.

Not Available

1988-01-01T23:59:59.000Z

302

Performance simulation of R410A air conditioning system with variable speeds  

Science Conference Proceedings (OSTI)

With the implementation of "Montreal protocol on substances that deplete the ozone layer", HCFCs especially R22 will be phased out. R410A (R32/R125,50/50wt%), as one alternative of R22, is a promising refrigerant for air conditioning ... Keywords: R410A, air conditioning, electronic expansion valve, performance, refrigerants, system simulation, variable speeds

Zaoxiao Zhang; Yongzhang Yu; Leping Zhang

2004-12-01T23:59:59.000Z

303

Numerical simulation of hydraulic shock in a water pumping system protected by air  

Science Conference Proceedings (OSTI)

Air may be efficiently used in water pumping system protection from hydraulic shock, due to its elasticity. The paper presents the results regarding the extreme pressures in the discharge duct of a pumping installation, obtained by numerical simulation ... Keywords: air chamber, biphasic flow, dissolution, hydraulic shock, pumping installation

Anca Constantin; Claudiu Stefan Nitescu

2010-10-01T23:59:59.000Z

304

MAQS: a personalized mobile sensing system for indoor air quality monitoring  

Science Conference Proceedings (OSTI)

Most people spend more than 90% of their time indoors; indoor air quality (IAQ) influences human health, safety, productivity, and comfort. This paper describes MAQS, a personalized mobile sensing system for IAQ monitoring. In contrast with existing ... Keywords: air quality sensing, location based service, smartphone

Yifei Jiang; Kun Li; Lei Tian; Ricardo Piedrahita; Xiang Yun; Omkar Mansata; Qin Lv; Robert P. Dick; Michael Hannigan; Li Shang

2011-09-01T23:59:59.000Z

305

Solar air conditioning system using desiccant wheel technology  

Science Conference Proceedings (OSTI)

The electrical energy consumption in Malaysia has increased sharply in the past few years. Modern energy efficient technologies are desperately needed for the national energy policy. In this paper, a new design of desiccant cooling is being developed ... Keywords: air-conditioning, desiccant cooling, solar thermal energy, solid desiccant

Arfidian Rachman; Sohif Mat; Taib Iskandar; M. Yahya; Azami Zaharim; Kamaruzzaman Sopian

2010-10-01T23:59:59.000Z

306

Analytical modeling of a hydraulically-compensated compressed-air energy-storage system  

Science Conference Proceedings (OSTI)

A computer program was developed to calculate the dynamic response of a hydraulically-compensated compressed air energy storage (CAES) system, including the compressor, air pipe, cavern, and hydraulic compensation pipe. The model is theoretically based on the two-fluid model in which the dynamics of each phase are presented by its set of conservation equations for mass and momentum. The conservation equations define the space and time distribution of pressure, void fraction, air saturation, and phase velocities. The phases are coupled by two interface equations. The first defines the rate of generation (or dissolution) of gaseous air in water and can include the effects of supersaturation. The second defines the frictional shear coupling (drag) between the gaseous air and water as they move relative to each other. The relative motion of the air and water is, therefore, calculated and not specified by a slip or drift-velocity correlation. The total CASE system is represented by a nodal arrangement. The conservation equations are written for each nodal volume and are solved numerically. System boundary conditions include the air flow rate, atmospheric pressure at the top of the compensation pipe, and air saturation in the reservoir. Initial conditions are selected for velocity and air saturation. Uniform and constant temperature (60/sup 0/F) is assumed. The analytical model was used to investigate the dynamic response of a proposed system.Investigative calculations considered high and low water levels, and a variety of charging and operating conditions. For all cases investigated, the cavern response to air-charging, was a damped oscillation of pressure and flow. Detailed results are presented. These calculations indicate that the Champagne Effect is unlikely to cause blowout for a properly designed CAES system.

McMonagle, C.A.; Rowe, D.S.

1982-12-01T23:59:59.000Z

307

Testing and evaluation aspects of integration of unmanned air systems into the national air space  

Science Conference Proceedings (OSTI)

Current developments show that the integration of Unmanned Aerial Systems (UAS) into the National Airspace System (NAS) is a process that will inevitably happen. Arguably, it may be viewed as one of the key milestones in the history of aviation. Whereas ... Keywords: NAS integration, modeling and simulation, test and evaluation, unmanned aerial systems, verification and validation

Mauricio Castillo-Effen; Nikita Visnevski

2010-09-01T23:59:59.000Z

308

Comparative Study Between Air-Cooled and Water-Cooled Condensers of the Air-Conditioning Systems  

E-Print Network (OSTI)

The weather in Kuwait is very dry where the dry-bulb temperature exceeds the wet-bulb temperature more than 20oC in most of the summer months. Thus, the air-conditioning (A/C) system with the water-cooled (WC) condensers is expected to perform more efficiently than with the air-cooled (AC) condensers. This fact was behind the idea of a field study conducted in one of the major hospital in Kuwait during a summer season to investigate the performance of WC and AC systems in terms of peak power and energy consumptions. The cooling capacities for WC and AC systems were 373 and 278 tons-of- refrigeration, respectively. It was found that for the same cooling production, the peak power demand and the daily energy consumption of the WC system were 45 and 32% less than that of the AC system, respectively. The maximum reduction in the power demand coincided with the peak power demand period of the utilities i.e. between 14:00 and 17:00 hr, thereby offering a maximum advantage of peak power saving.

Maheshwari, G. P.; Mulla Ali, A. A.

2004-01-01T23:59:59.000Z

309

Hybrid membrane--PSA system for separating oxygen from air ...  

The system is a unique gas separation system that ... Energy Innovation ... Sandia National Laboratories - Visit the Intellectual Property Management and ...

310

Air-Cooled Condensers in Next-Generation Conversion Systems Geothermal Lab  

Open Energy Info (EERE)

Air-Cooled Condensers in Next-Generation Conversion Systems Geothermal Lab Air-Cooled Condensers in Next-Generation Conversion Systems Geothermal Lab Call Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Air-Cooled Condensers in Next-Generation Conversion Systems Project Type / Topic 1 Laboratory Call for Submission of Applications for Research, Development and Analysis of Geothermal Technologies Project Type / Topic 2 Air-Cooling Project Description As the geothermal industry moves to use geothermal resources that are more expensive to develop, there will be increased incentive to use more efficient power plants. Because of increasing demand on finite supplies of water, this next generation of more efficient plants will likely need to reject heat sensibly to the ambient (air-cooling). This will be especially true in western states having higher grade Enhanced Geothermal Systems (EGS) resources, as well as most hydrothermal resources. If one had a choice, an evaporative heat rejection system would be selected because it would provide both cost and performance advantages. The evaporative system, however, consumes a significant amount of water during heat rejection that would require makeup. Though they use no water, air-cooling systems have higher capital costs, reduced power output (heat is rejected at a higher temperature), lower power sales due to higher parasitics (fan power), and greater variability in power output (because of large variation in the dry-bulb temperature).

311

Modeling AirLandSea Interactions Using the Integrated Regional Model System in Monterey Bay, California  

Science Conference Proceedings (OSTI)

The airlandsea interaction in the vicinity of Monterey Bay, California, is simulated and investigated using a new Integrated Regional Model System (I-RMS). This new model realistically resolves coastal processes and submesoscale features that ...

Yu-Heng Tseng; Shou-Hung Chien; Jiming Jin; Norman L. Miller

2012-04-01T23:59:59.000Z

312

Avionics and control system development for mid-air rendezvous of two unmanned aerial vehicles  

E-Print Network (OSTI)

A flight control system was developed to achieve mid-air rendezvous of two unmanned aerial vehicles (UAVs) as a part of the Parent Child Unmanned Aerial Vehicle (PCUAV) project at MIT and the Draper Laboratory. A lateral ...

Park, Sanghyuk, 1973-

2004-01-01T23:59:59.000Z

313

A Comparative Study for the Air Distribution System of a Cleanroom...  

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

A Comparative Study for the Air Distribution System of a Cleanroom with High Cooling Load and Airborne Molecular Sources Speaker(s): Shih-Cheng Hu Date: June 20, 2008 - 12:00pm...

314

Analysis of a Retrofitted Thermal Energy Storage Air-conditioning System of a Marine Museum.  

E-Print Network (OSTI)

??Thermal energy storage(TES) air-conditioning system is a electrical load management technology with great potential to shift load from peak to off-peak utility periods. TES is (more)

Yu, Po-wen

2005-01-01T23:59:59.000Z

315

Energy Department Releases Study of Electricity System Ahead of Proposed EPA Air Quality Standards  

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

In anticipation of forthcoming Environmental Protection Agency proposals for clean air standards, DOE released a new report examining the potential impact those proposed standards could have on the reliability of our nations energy systems.

316

Air Distribution Systems and Cross-Infection Risk in the Hospital...  

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

Air Distribution Systems and Cross-Infection Risk in the Hospital Sector Speaker(s): Peter V. Nielsen Date: November 28, 2012 - 12:00pm Location: 90-4133 Seminar HostPoint of...

317

Engineering Design Example CompressedCompressed--Air System for a Manufacturing PlantAir System for a Manufacturing Plant  

E-Print Network (OSTI)

to operate C/A tools: Compressor and piping layoutCompressor and piping layout Air supply circumferentially: · Estimate the load [cfm] based on current and future demand. · Size the compressor(s). · Size the pipes so*1.35=1900 cfm. · Centrifugal or reciprocating compressor may be chosen (later). From handbooks: P kk /)1

Kostic, Milivoje M.

318

Promising future energy storage systems: Nanomaterial based systems, Zn-air and electromechanical batteries  

SciTech Connect

Future energy storage systems will require longer shelf life, higher duty cycles, higher efficiency, higher energy and power densities, and be fabricated in an environmentally conscious process. This paper describes several possible future systems which have the potential of providing stored energy for future electric and hybrid vehicles. Three of the systems have their origin in the control of material structure at the molecular level and the subsequent nanoengineering into useful device and components: aerocapacitors, nanostructure multilayer capacitors, and the lithium ion battery. The zinc-air battery is a high energy density battery which can provide vehicles with long range (400 km in autos) and be rapidly refueled with a slurry of zinc particles and electrolyte. The electromechanical battery is a battery-sized module containing a high-speed rotor integrated with an iron-less generator mounted on magnetic bearings and housed in an evacuated chamber.

Koopman, R.; Richardson, J.

1993-10-01T23:59:59.000Z

319

Effect of a Radiant Panel Cooling System on Indoor Air Quality of a Conditioned Space  

E-Print Network (OSTI)

This paper discusses the effect of a radiant cooling panel system on an indoor air quality (IAQ) of a conditioned space. In this study, ceiling radiant cooling panel, mechanical ventilation with fan coil unit (FCU) and 100% fresh air are used. Temperature sensors are located at different locations inside the conditioned space in order to sense dry bulb temperatures, relative humidity to compare it with standard ASHRAE comfort values. The present investigation indicates that the radiant cooling system not only improves the indoor air quality but also reduces the building energy consumption in the conditioned space.

Mohamed, E.; Abdalla, K. N.

2010-01-01T23:59:59.000Z

320

Variable Speed Drive Volumetric Tracking (VSDVT) for Airflow Control in Variable Air Volume (VAV) Systems  

E-Print Network (OSTI)

An airflow control method has been developed for variable air volume (VAV) systems. This airflow control method is named VSD volumetric tracking (VSDVT) since both the supply and return airflows are determined using signals of the variable speed drives (VSD) instead of the flow stations. Its performance is studied and compared with the fan tracking (FT) method using model simulations. The VSDVT maintains a constant building pressure and the required outside airflow under all load conditions, reduces the annual return air fan energy by up to 50%, and the annual supply air fan energy by up to 30%. This paper presents the VSDVT method, the system models, and the simulation results.

Liu, M.

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "forced air system" 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

A Comparative Study for the Air Distribution System of a Cleanroom with  

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

A Comparative Study for the Air Distribution System of a Cleanroom with A Comparative Study for the Air Distribution System of a Cleanroom with High Cooling Load and Airborne Molecular Sources Speaker(s): Shih-Cheng Hu Date: June 20, 2008 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Tim Xu With rapid change of production line in Taiwan IT Industries; increased productivity/flexibility in the same cleanroom space is required urgently. We have systematically compared two cleanroom ventilation systems i.e. conventional and ceiling return system. The wall return system has fixed location of Fan filter unit (FFU), return air shaft/wall and dry coiling coil. The ceiling return system with a specially designed Fan Filter Dry Coil Unit (FFDCU) installed just above a production tool with high heat/particle sources. For a wall return system, reduced flexibility and

322

A Field Air-Exclusion System for Measuring the Effects of Air Pollutants on Crops  

Science Conference Proceedings (OSTI)

In two years of field testing, an electronically regulated prototype proved more realistic for southwestern conditions than conventional systems for exposing plants to controlled amounts of pollutants. A mobile version of the experimental system, developed on the basis of the test results, is transportable to remote sites.

1985-08-12T23:59:59.000Z

323

Theoretical Study of a Novel Control Method of VAV Air-conditioning System Based on MATLAB  

E-Print Network (OSTI)

The main purpose of this study is to put forward a novel nonlinear feedback control strategy on controlling indoor air temperature by variable air volume. A dynamic model of a typical room for a VAV air-conditioning system is established. The performance of the novel control strategy is investigated. Simulation of the controlling air temperature, on which the novel strategy is adopted, was carried out based on MATLAB in the VAV system. In order to show that the novel control strategy outperforms conventional PID control, a comparison is made between the performance of conventional PID and the novel nonlinear feedback control strategy. The results show that nonlinear feedback control strategy outperforms a conventional PID control system in terms of celerity, stability and other aspects.

Shi, Z.; Hu, S.; Wang, G.; Li, A.

2006-01-01T23:59:59.000Z

324

Literature Review on Underfloor Air Distribution (UFAD) Systems  

E-Print Network (OSTI)

Various sources and search engines were used to find the technical research and literature by using specific keywords to search for the relevant reports or browsing through the list of documents. First, the 227 of references from the book Underfloor Air Distribution (UFAD) Design Guide by Fred S. Bauman were used to start searching literature. His references include papers, articles, and web references presenting major contributions to the understanding and development of UFAD technology and design. Other literature search methods were utilized. Below is the list of sources.

Im, P.; Cho, S.; Haberl, J. S.

2006-01-10T23:59:59.000Z

325

Experimental Evaluation of a Downsized Residential Air Distribution System: Comfort and Ventilation Effectiveness  

SciTech Connect

Good air mixing not only improves thermal comfort Human thermal comfort is the state of mind that expresses satisfaction with the surrounding environment, according to ASHRAE Standard 55. Achieving thermal comfort for most occupants of buildings or other enclosures is a goal of HVAC design engineers. but also enhances ventilation effectiveness by inducing uniform supply-air diffusion. In general, the performance of an air distribution system in terms of comfort and ventilation effectiveness is influenced by the supply air temperature, velocity, and flow rate, all of which are in part dictated by the HVAC (Heating Ventilation Air Conditioning) In the home or small office with a handful of computers, HVAC is more for human comfort than the machines. In large datacenters, a humidity-free room with a steady, cool temperature is essential for the trouble-free system as well as the thermal load attributes. Any potential deficiencies associated with these design variables can be further exacerbated by an improper proximity of the supply and return outlets with respect to the thermal and geometrical characteristics of the indoor space. For high-performance houses, the factors influencing air distribution performance take on an even greater significance because of a reduced supply-air design flow rate resulting from downsized HVAC systems.

Jalalzadeh-Azar, A. A.

2007-01-01T23:59:59.000Z

326

Quantitative evaluation of air-filtration systems in use at asbestos abatement sites: Research in progress  

Science Conference Proceedings (OSTI)

High Efficiency Particulate Air (HEPA) filtration systems serve as the principal engineering control to remove asbestos particulate from airstreams at abatement projects. However, little quantitative information is available on the integrity of these air-filtration systems in preventing asbestos fiber release into outdoor air or adjacent building areas, potentially exposing occupants. A study is in progress to assess the performance of HEPA filtration systems in use at asbestos abatement projects to determine each systems operating particle-removal efficiency, percent concentration, and decontamination factor. The asbestos-fiber concentration in the inlet and discharge air of each filtration system will be determined by isokinetic air sampling. Each isokinetic air sample collected will be analyzed using transmission electron microscopy. In addition, in-place aerosol performance testing will be conducted according to procedures outlined in ANSI/ASME N510-1980. The test method utilizes a polydispersed dioctyl phthalate aerosol (generated by Laskin nozzles) and a photometric light-scattering mass-concentration detector as the measuring device.

Powers, T.J.; Cain, W.C.; Wilmoth, R.C.; Kominsky, J.R.; Brownlee, J.A.

1989-01-01T23:59:59.000Z

327

Air Conditioning with Magnetic Refrigeration : An Efficient, Green Compact Cooling System Using Magnetic Refrigeration  

SciTech Connect

BEETIT Project: Astronautics is developing an air conditioning system that relies on magnetic fields. Typical air conditioners use vapor compression to cool air. Vapor compression uses a liquid refrigerant to circulate within the air conditioner, absorb the heat, and pump the heat out into the external environment. Astronautics design uses a novel property of certain materials, called magnetocaloric materials, to achieve the same result as liquid refrigerants. These magnetocaloric materials essentially heat up when placed within a magnetic field and cool down when removed, effectively pumping heat out from a cooler to warmer environment. In addition, magnetic refrigeration uses no ozone-depleting gases and is safer to use than conventional air conditioners which are prone to leaks.

None

2010-09-01T23:59:59.000Z

328

Geothermal Systems are a Breath of Fresh Air for Illinois School District |  

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

Geothermal Systems are a Breath of Fresh Air for Illinois School Geothermal Systems are a Breath of Fresh Air for Illinois School District Geothermal Systems are a Breath of Fresh Air for Illinois School District May 24, 2010 - 11:01am Addthis Each classroom has a geothermal unit installed. Although large, the units blend into surroundings and don’t produce excess noise. | Photo Courtesy of Sterling Public Schools Each classroom has a geothermal unit installed. Although large, the units blend into surroundings and don't produce excess noise. | Photo Courtesy of Sterling Public Schools Lindsay Gsell Superintendent Tad Everett had two priorities when deciding on a new system to replace the aging oil-based boiler heating and cooling systems for the seven schools in his district: improving learning environments and saving

329

Geothermal Systems are a Breath of Fresh Air for Illinois School District |  

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

Geothermal Systems are a Breath of Fresh Air for Illinois School Geothermal Systems are a Breath of Fresh Air for Illinois School District Geothermal Systems are a Breath of Fresh Air for Illinois School District May 24, 2010 - 11:01am Addthis Each classroom has a geothermal unit installed. Although large, the units blend into surroundings and don’t produce excess noise. | Photo Courtesy of Sterling Public Schools Each classroom has a geothermal unit installed. Although large, the units blend into surroundings and don't produce excess noise. | Photo Courtesy of Sterling Public Schools Lindsay Gsell Superintendent Tad Everett had two priorities when deciding on a new system to replace the aging oil-based boiler heating and cooling systems for the seven schools in his district: improving learning environments and saving

330

Room Temperature Control During Season Switchover with Single Duct Variable Air Volume System Without Reheat  

E-Print Network (OSTI)

The Langford A building houses the College of Architecture on TAMU campus. There are ten singleduct variable air volume (VAV) air-handling units (AHUs) without reheat serving the building. The local pneumatic thermostats modulate the dampers of VAV boxes to maintain room temperature at their setpoints. The thermostat action is switched from direct acting (DA) to reverse acting (RA) when the season changes from fall to winter and vice versa from winter to spring, based on the out side air temperature, when season changes. This results in various parts of the building ether too cold or too hot during the season change. This paper presents that the thermostat action will be switched according to cooling loads or discharge air temperature, instead of outside air temperature. For the interior zone, thermostat action does not need to be switched at all. The comfort is improved and savings is achieved by the new control scheme. Because some air-handling units (AHUs) serve both interior and exterior zones, this system never worked as intended. The system must be modified to have zone reheat and the AHUs discharge air temperature is set below dew point for humidity control.

Liu, C.; Deng, S.; Claridge, D. E.; Turner, W. D.; Bruner, H.

2003-01-01T23:59:59.000Z

331

Improving the efficiency of residential air-distribution systems in California, Phase 1  

Science Conference Proceedings (OSTI)

This report describes the results of the first phase of a multiyear research project. The project`s goal is to investigate ways to improve the efficiency of air-distribution systems in detached, single-family residences in California. First-year efforts included: A survey of heating, ventilating, and air conditioning (HVAC) contractors in California. A 31-house field study of distribution-system performance based on diagnostic measurements. Development of an integrated air-flow and thermal-simulation tool for investigating residential air-distribution system performance. Highlights of the field results include the following: Building envelopes for houses built after 1979 appear to be approximately 30% tighter. Duct-system tightness showed no apparent improvement in post-1979 houses. Distribution-fan operation added an average of 0.45 air changes per hour (ACH) to the average measured rate of 0.24 ACH. The simulation tool developed is based on DOE-2 for the thermal simulations and on MOVECOMP, an air-flow network simulation model, for the duct/house leakage and flow interactions. The first complete set of simulations performed (for a ranch house in Sacramento) indicated that the overall heating-season efficiency of the duct systems was approximately 65% to 70% and that the overall cooling-season efficiency was between 60% and 75%. The wide range in cooling-season efficiency reflects the difference between systems with attic return ducts and those with crawl-space return ducts, the former being less efficient. The simulations also indicated that the building envelope`s UA-value, a measurement of thermoconductivity, did not have a significant impact on the overall efficiency of the air-distribution system.

Modera, M.; Dickerhoff, D.; Jansky, R.; Smith, B.

1992-06-01T23:59:59.000Z

332

Improving Control of a Dual-Duct Single-Fan Variable Air Volume Systems  

E-Print Network (OSTI)

This paper discusses improved control strategies for dual-duct single-fan variable air volume (VAV) systems. Common control strategy for supply air volume modulation is evaluated, and an improved air volume control strategy that maintains separate cold and hot air duct static pressure set points is presented. The paper also explores the interactions between the cold and hot deck temperatures and duct static pressures, and discusses the impact of non-ideal deck temperature settings on duct static pressures and overall system energy consumption. To compensate the negative impact of non-ideal cold and hot deck temperature set points, the authors propose using real-time duct static pressure readings as feedback signals to fine-tune the deck temperature set points. These new control schemes can reduce simultaneous cooling and heating while reducing fan power consumption.

Wei, G.; Martinez, J.; Minihan, T.; Brundidge, T.; Claridge, D. E.; Turner, W. D.

2003-01-01T23:59:59.000Z

333

Conceptual design of air-core superconducting power transformer for cable transmission system  

Science Conference Proceedings (OSTI)

The air-core superconducting transformer, which has a large magnetizing current, has been proposed as a power transformer that has the function as a shunt reactor. In this paper, the basic design procedure for the air-core superconducting transformer is presented. By using this procedure, 500/{radical}(3kV)--66/{radical}(3kV)--300 MVA single phase air-core transformer is designed for a model cable transmission system. Then, the performance of this transformer in the model cable transmission system is analyzed, and it is confirmed that the air-core superconducting transformer can function as a shunt reactor in addition to the principal as a power transformer.

Yamaguchi, Hiroshi; Sato, Yukihiko; Kataoka, Teruo [Tokyo Inst. of Tech. (Japan). Dept. of Electrical and Electronic Engineering

1996-04-01T23:59:59.000Z

334

Improving the Performance of Air-Conditioning Systems in an ASEAN Climate  

E-Print Network (OSTI)

This paper describes an analysis of air conditioning performance under hot and humid tropical climate conditions appropriate to the Association of South East Asian Nations (ASEAN) countries. This region, with over 280 million people, has one of the fastest economic and energy consumption growth rates in the world. The work reported here is aimed at estimating the conservation potential derived from good design and control of air conditioning systems in commercial buildings.

Busch, J. F.; Warren, M. L.

1988-01-01T23:59:59.000Z

335

Halving the Casimir force with conductive oxides  

E-Print Network (OSTI)

The possibility to modify the strength of the Casimir effect by tailoring the dielectric functions of the interacting surfaces is regarded as a unique opportunity in the development of Micro- and NanoElectroMechanical Systems. In air, however, one expects that, unless noble metals are used, the electrostatic force arising from trapped charges overcomes the Casimir attraction, leaving no room for exploitation of Casimir force engineering at ambient conditions. Here we show that, in the presence of a conductive oxide, the Casimir force can be the dominant interaction even in air, and that the use of conductive oxides allows one to reduce the Casimir force up to a factor of 2 when compared to noble metals.

S. de Man; K. Heeck; R. J. Wijngaarden; D. Iannuzzi

2009-01-23T23:59:59.000Z

336

Predictive model for the determination of the economic feasibility of construction and demolition waste recycling in the Air Force. Master's thesis  

Science Conference Proceedings (OSTI)

This study created a model to be used at a CONUS Air Force base to determine the economic feasibility of Construction and Demolition (CD) waste recycling. Three areas investigated to develop this model: the methods to determine amounts and types of CD waste generated at a specific location, the markets for recycled CD wastes, and the recycling methods currently available. From this data, gathered through records searches and interviews, a procedure was developed to perform cost/benefit analyses on the available recycling options. A model was then created based on these calculations which can arm a manager with information to either support or reject a recycling program by indicating cost savings or losses from recycling CD waste. Also, the model aids managers in determining the approximate quantities of recyclable materials being generated, which could be valuable in reaching base recycling goals. To demonstrate the model, the feasibility of recycling CD waste at Hill AFB, Utah in 1994 was evaluated. In addition to determining recycling feasibility, a method was presented to perform sensitivity analyses on the base-specific input variables. This procedure can help determine when it will become feasible to create a CD waste recycling program.

Dixon, B.L.

1993-09-01T23:59:59.000Z

337

Effect of System and Air Contaminants on PEMFC Performance and Durability  

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

Dinh Dinh (PI) National Renewable Energy Laboratory October 1, 2009 Effect of System and Air Contaminants on PEMFC Performance and Durability This presentation does not contain any proprietary, confidential, or otherwise restricted information Objectives To assist the DOE Fuel Cell Technologies (FCT) Program in meeting cost, durability, and performance targets in the areas of fuel cell systems. The effort is focused on system-derived contaminants, but has a small component addressing "gaps" in the area of air contaminants. Premise System-derived contaminants can have negative effect on fuel cell performance. Current density (A/cm 2 ) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 g ( SHE ) Average cell voltage after air oxidation exposure Average cell voltage as measured in vehicle

338

Energy and Air Emission Implications of a Decentralized Wastewater System  

E-Print Network (OSTI)

water supply like desalination. The centralized facilitywater demand met through desalination would increase thewater is supplied through desalination. While septic systems

Shehabi, Arman

2013-01-01T23:59:59.000Z

339

Characterization of air recirculation in multiple fan ventilation systems.  

E-Print Network (OSTI)

??Booster fans, large underground fans, can increase the volumetric efficiency of ventilation systems by helping to balance the pressure and quantity distribution throughout a mine, (more)

Wempen, Jessica Michelle

2012-01-01T23:59:59.000Z

340

Preliminary design package for residential heating/cooling system--Rankine air conditioner redesign  

DOE Green Energy (OSTI)

This report contains a summary of the preliminary redesign and development of a marketable single-family heating and cooling system. The objectives discussed are the interim design and schedule status of the Residential (3-ton) redesign, problem areas and solutions, and the definition of plans for future design and development activities. The proposed system for a single-family residential heating and cooling system is a single-loop, solar-assisted, hydronic-to-warm-air heating subsystem with solar-assisted domestic water heating and a Rankine-driven expansion air-conditioning subsystem.

Not Available

1978-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "forced air system" 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

Energy Performance Comparison of Heating and Air Conditioning Systems for Multi-Family Residential Buildings  

SciTech Connect

The type of heating, ventilation and air conditioning (HVAC) system has a large impact on the heating and cooling energy consumption in multifamily residential buildings. This paper compares the energy performance of three HVAC systems: a direct expansion (DX) split system, a split air source heat pump (ASHP) system, and a closed-loop water source heat pump (WSHP) system with a boiler and an evaporative fluid cooler as the central heating and cooling source. All three systems use gas furnace for heating or heating backup. The comparison is made in a number of scenarios including different climate conditions, system operation schemes and applicable building codes. It is found that with the minimum code-compliant equipment efficiency, ASHP performs the best among all scenarios except in extremely code climates. WSHP tends to perform better than the split DX system in cold climates but worse in hot climates.

Wang, Weimin; Zhang, Jian; Jiang, Wei; Liu, Bing

2011-07-31T23:59:59.000Z

342

Issues and Factors of Train Air-conditioning System Design and Operation  

E-Print Network (OSTI)

Like a moving building, a train's outer meteorologic parameter will change a lot with the local meteorologic parameter on the way. In this paper, we put forward the design method of the typical design period and some dynamic energy-saving ways to solve the problem. These methods consider the dynamic changes of the outer environment when the train is moving, which will supply the theoretical basis for the calculation of the dynamic load and real-time running and regulation of the train's air-conditioning. Modifications to the air-conditioning system and some advanced air conditioning systems are introduced, which are helpful for system optimization. In this paper, based on analysis of the characteristics of the air - conditioning system in foreign high speed passenger cars and demands for its acceleration, developing trends for air - conditioning systems for high speed passenger cars are pointed out and some advice is put forward. Above all, we should not only satisfy the comfort need of the passengers, but also succeed in saving energy.

Liu, P.; Li, D.

2006-01-01T23:59:59.000Z

343

Airborne Particulate Matter in HVAC Systems and its Influence on Indoor Air Quality  

E-Print Network (OSTI)

This paper first reviews the mechanisms governing movement of PMs in HVAC systems. Then, the basic equations governing PM deposition in ducts are introduced and investigations on airborne PMs distribution in HVAC systems are reviewed. The influence of PMs on indoor air quality and effectiveness of corresponding controlling measures is discussed extensively in the paper. Finally, recommendations for further research are given.

Fu, Z.; Li, N.; Wang, H.

2006-01-01T23:59:59.000Z

344

The Australian Air Quality Forecasting System. Part I: Project Description and Early Outcomes  

Science Conference Proceedings (OSTI)

The Australian Air Quality Forecasting System (AAQFS) is the culmination of a 3-yr project to develop a numerical primitive equation system for generating high-resolution (15 km) short-term (2436 h) forecasts for the Australian coastal cities ...

M. E. Cope; G. D. Hess; S. Lee; K. Tory; M. Azzi; J. Carras; W. Lilley; P. C. Manins; P. Nelson; L. Ng; K. Puri; N. Wong; S. Walsh; M. Young

2004-05-01T23:59:59.000Z

345

Inertial-Dissipation Air-Sea Flux Measurements: A Prototype System Using Realtime Spectral Computations  

Science Conference Proceedings (OSTI)

A prototype system for the measurement and computation of airsea fluxes in realtime was tested in the Humidity Exchange Over the Sea (HEXOS) main experiment, HEXMAX. The system used a sonic anemometer/thermometer for wind speed, surface stress ...

C. W. Fairall; J. B. Edson; S. E. Larsen; P. G. Mestayer

1990-06-01T23:59:59.000Z

346

Geothermal Energy Development in the Eastern United States: Technical assistance report No. 6 geothermal space heating and airconditioning -- McGuire Air Force Base, New Jersey  

DOE Green Energy (OSTI)

A method of utilizing the geothermal (66 F) water resource for space heating and cooling of 200 of the 1452 housing units at McGuire AFB is suggested. Using projections of future costs of gas, coal and electricity made by DOD and by industry (Westinghouse), the relative costs of the geothermal-water-plus-heat-pump system and the otherwise-planned central gas heating (to be converted to coal in 1984) and air-conditioning (using individual electric units) system are compared. For heating with the geothermal/heat-pump system, an outlet temperature of 130 F is selected, requiring a longer running time than the conventional system (at 180 F) but permitting a COP (coefficient of performance) of the heat pump of about 3.4. For cooling (obtained in this study by changing directions of water flow, not refrigerant cycles), the change in temperature is less, and a COP near 4.5 is obtained. The cost of cooling in the summer months would be significantly less than the cost of using individual electric air-conditioners. Thus, by using nonreversible heat pumps, geothermal water is used to heat and to cool a section of the housing compound, minimizing operating expenditures. It is estimated that, to drill 1000 ft deep production and reinjection wells and to install ten heat pumps, heat exchangers and piping, would require a capital outlay of $643 K. This cost would replace the capital cost of purchasing and installing 200 air-conditioning units and 14% of the cost of the future coal-fired central heating system (which would otherwise serve all 1452 housing units at McGuire). The net additional capital outlay would be $299 K, which could be amortized in 10 years by the lower operating cost of the geothermal system if electricity and coal prices escalate as industry suggests. If the coal and electricity costs rise at the more modest rates that DOD projects, the capital costs would be amortized in a 15 year period.

Hill, F.K.; Briesen R. von

1980-12-01T23:59:59.000Z

347

Abstract: Air, Thermal and Water Management for PEM Fuel Cell Systems  

DOE Green Energy (OSTI)

PEM fuel cells are excellent candidates for transportation applications due to their high efficiencies. PEM fuel cell Balance of Plant (BOP) components, such as air, thermal, and water management sub-systems, can have a significant effect on the overall system performance, but have traditionally not been addressed in research and development efforts. Recognizing this, the U.S. Department of Energy and Honeywell International Inc. are funding an effort that emphasizes the integration and optimization of air, thermal and water management sub-systems. This effort is one of the major elements to assist the fuel cell system developers and original equipment manufacturers to achieve the goal of an affordable and efficient power system for transportation applications. Past work consisted of: (1) Analysis, design, and fabrication of a motor driven turbocompressor. (2) A systematic trade study to select the most promising water and thermal management systems from five different concepts (absorbent wheel humidifier, gas to gas membrane humidifier, porous metal foam humidifier, cathode recycle compressor, and water injection pump.) This presentation will discuss progress made in the research and development of air, water and thermal management sub-systems for PEM fuel cell systems in transportation applications. More specifically, the presentation will discuss: (1) Progress of the motor driven turbocompressor design and testing; (2) Progress of the humidification component selection and testing; and (3) Progress of the thermal management component preliminary design. The programs consist of: (1) The analysis, design, fabrication and testing of a compact motor driven turbocompressor operating on foil air bearings to provide contamination free compressed air to the fuel cell stack while recovering energy from the exhaust streams to improve system efficiency. (2) The analysis, design, fabrication and testing of selected water and thermal management systems and components to improve system efficiency and reduce packaging size.

Mark K. Gee

2008-10-01T23:59:59.000Z

348

Controlled air injection for a fuel cell system  

DOE Patents (OSTI)

A method and apparatus for injecting oxygen into a fuel cell reformate stream to reduce the level of carbon monoxide while preserving the level of hydrogen in a fuel cell system.

Fronk, Matthew H. (Honeove Falls, NY)

2002-01-01T23:59:59.000Z

349

Thermal comfort and perceived air quality of a PEC system.  

E-Print Network (OSTI)

W. , Gong, N. 2007. Thermal performance of a personalizedRESULTS 1. Whole-body thermal sensation and comfort withthe PEC system Whole-body thermal sensation and comfort are

Arens, Edward; Zhang, Hui; Pasut, Wilmer

2011-01-01T23:59:59.000Z

350

Total environmental warming impact (TEWI) calculations for alternative automative air-conditioning systems  

SciTech Connect

The Montreal Protocol phase-out of chlorofluorocarbons (CFCs) has required manufacturers to develop refrigeration and air-conditioning systems that use refrigerants that can not damage stratospheric ozone. Most refrigeration industries have adapted their designs to use hydrochlorofluorocarbon (HCFC) or hydrofluorocarbon (HFC) refrigerants; new automobile air- conditioning systems use HFC-134a. These industries are now being affected by scientific investigations of greenhouse warming and questions about the effects of refrigerants on global warming. Automobile air-conditioning has three separate impacts on global warming; (1) the effects of refrigerant inadvertently released to the atmosphere from accidents, servicing, and leakage; (2) the efficiency of the cooling equipment (due to the emission of C0{sub 2} from burning fuel to power the system); and (3) the emission of C0{sub 2} from burning fuel to transport the system. The Total Equivalent Warming Impact (TEWI) is an index that should be used to compare the global warming effects of alternative air-conditioning systems because it includes these contributions from the refrigerant, cooling efficiency, and weight. This paper compares the TEWI of current air-conditioning systems using HFC-134a with that of transcritical vapor compression system using carbon dioxide and systems using flammable refrigerants with secondary heat transfer loops. Results are found to depend on both climate and projected efficiency of C0{sub 2}systems. Performance data on manufacturing prototype systems are needed to verify the potential reductions in TEWI. Extensive field testing is also required to determine the performance, reliability, and ``serviceability`` of each alternative to HFC-134a to establish whether the potential reduction of TEWI can be achieved in a viable consumer product.

Sand, J.R.; Fischer, S.K.

1997-01-01T23:59:59.000Z

351

Method and apparatus for operating a self-starting air heating system  

DOE Patents (OSTI)

A self-starting, fuel fired, air heating system including a fuel burner fired vapor generator, a turbine, and a condenser connected in a closed circuit such that the vapor output from the vapor generator is conducted to the turbine and then to the condenser where it is condensed for return to the vapor generator. The turbine drives an air blower which passes air over the condenser for cooling the condenser and heating the air. Also, a condensate pump is driven by the turbine. The disclosure is particularly concerned with a method and apparatus which on start-up prevents the vapor generator's vapor output from being conducted to the turbine until a predetermined pressure differential has been achieved. However, after the vapor flow is once permitted, it cannot again be prevented until after the fuel burner has been shut off and restarted.

Heinrich, Charles E. (Mentor, OH)

1983-12-06T23:59:59.000Z

352

The Technical and Economical Analysis of the Air-conditioning System Usage in Residential Buildings in Beijing  

E-Print Network (OSTI)

In this paper, we show that the air-conditioning usage in residential buildings in Beijing grows rapidly in relation to the development of civil construction. More and more people are not satisfied with the current style of only using split air-conditioning units in residential buildings, and are using the central air-conditioning system in residential buildings. To determine the best air conditioning mode, a residential tower building with 22 layers was chosen for analysis. The advantages and disadvantages of the central air-conditioning system and the residential multi-unit air-conditioning equipment system and the LiBr absorption chiller were compared based on calculating the first-cost and the annual cost (according to providing cooling 90 days annually). The predicted results show the economical feasibility of using the refrigerating units in air-conditioning systems in Beijing region, and point out the developing directions for the future.

Sheng, G.; Xie, G.

2006-01-01T23:59:59.000Z

353

On the Contribution of Compressed Air Systems to Energy Efficiency Targets  

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

On the Contribution of Compressed Air Systems to Energy Efficiency Targets On the Contribution of Compressed Air Systems to Energy Efficiency Targets - A Function-Based Bottom-Up Approach Speaker(s): Patrick Plötz Date: May 4, 2012 - 2:00pm Location: 90-4133 Seminar Host/Point of Contact: Sanaee Iyama Achieving current EU energy targets as stipulated in the energy service directive and in the energy strategy for 2020 implies substantial efficiency improvements across a variety of industrial end-uses. The achievable saving potential of an end-use depends considerably on the age structure of the existing stock and on the technology definition, i.e. whether a product approach, an extended product approach or a system-approach is used. Within this context, important ErP studies on air compressors are in preparation. In this paper, we address the possible

354

A triple hot-wire system for indoor air flow measurements  

SciTech Connect

The application of a home made, triple hot-wire system in indoor air flow measurements is presented. Both the anemometer and sensor have been developed at Athens University with the aim to provide a reliable, research tool of reasonable cost, simple construction, and satisfactory performance. All three velocity components above a threshold of 10 cm s{sup {minus}1} can be measured. The system is also equipped with two thermometers for measuring the mean and fluctuating air temperature and for providing a means of temperature compensation of the hot wires` signal. After evaluation of the system in the laboratory, it was used in the measurement of the velocity profile of flows driven by the temperature difference between two internal zones. The implied accuracy of the method allows for its integration with measurements of air volume exchange rates between internal zones, as estimated by tracer gas techniques.

Papadopoulos, K.H.; Soilemes, A.T.; Helmis, C.G.; Santamouris, M.; Dascalaki, E. [Univ. of Athens (Greece); Asimakopoulos, D.N. [Univ. of Athens (Greece)]|[National Observatory of Athens (Greece). Inst. of Meteorology and Physics of the Atmospheric Environment; Argiriou, A. [National Observatory of Athens (Greece). Inst. of Meteorology and Physics of the Atmospheric Environment

1996-08-01T23:59:59.000Z

355

Research on Automatically Identification of Diagonal Air-flow Branches of Complex Ventilation System of Coal Mines  

Science Conference Proceedings (OSTI)

air-flow branches identification and stability analysis is one of the core contents of stability and reliability theory of mine ventilation system. This current paper takes deeply research on diagonal air-flow branches. Limitations of the path method ... Keywords: diagonal air-flow branch, path collection, path method, node-position method

Feng Cai, Zegong Liu

2012-07-01T23:59:59.000Z

356

Alternate Air Delivery Systems for Hot and Humid Climates  

E-Print Network (OSTI)

Carter & Burgess first began using triple deck multi-zone units, in place of traditional VAV systems, on the Texas State Capitol restoration. Since the completion of that project design in early 1991, our firm has now used triple deck multi-zone units in the Harris County Criminal Courts Building in Houston, one of the most hot and humid climates in the United States, as well as in several other facilities. This paper will discuss the adoption of ASHRAE 62, its effects on VAV systems, and how triple deck multi-zone units offer an alternative system to cooling in hot and humid climates. We recommend all design firms add triple deck multizone units to their repertoire of design solutions.

Wallace, M.

1996-01-01T23:59:59.000Z

357

A comparative assessment of alternative combustion turbine inlet air cooling system  

SciTech Connect

Interest in combustion turbine inlet air cooling (CTAC) has increased during the last few years as electric utilities face increasing demand for peak power. Inlet air cooling increases the generating capacity and decreases the heat rate of a combustion turbine during hot weather when the demand for electricity is generally the greatest. Several CTAC systems have been installed, but the general applicability of the concept and the preference for specific concepts is still being debated. Concurrently, Rocky Research of Boulder City, Nevada has been funded by the U.S. Department of Energy to conduct research on complex compound (ammoniated salt) chiller systems for low-temperature refrigeration applications.

Brown, D.R.; Katipamula, S.; Konynenbelt, J.H.

1996-02-01T23:59:59.000Z

358

THE IMPACT OF AIR POLLUTION CONTROL SYSTEM DESIGN ON  

E-Print Network (OSTI)

). Therefore, without cooling the flue gas, significant quantities of mercury will pass through the particulate, page 4824. Licata, A., et al, June 1994, "An Economic Alternative to Controlling Acid Gases, Mercury electrostatic precipitator combination. -Selective Non-Catalytic Reduction System to reduce nitrogen oxide

Columbia University

359

An Air-Launched Atmospheric Sounding System (ALMET)  

Science Conference Proceedings (OSTI)

This article describes a system to provide standard atmospheric soundings in remote oceanic regions. Deployed from an aircraft, the expendable unit descends to within 15 m of the ocean surface on a parachute and then releases a 500-g balloon and ...

Michael A. Bellmore; D. Ray Booker; Ken Winter

1994-02-01T23:59:59.000Z

360

Indoor Air Nuclear, Biological, and Chemical Health Modeling and Assessment System  

SciTech Connect

Indoor air quality effects on human health are of increasing concern to public health agencies and building owners. The prevention and treatment of 'sick building' syndrome and the spread of air-borne diseases in hospitals, for example, are well known priorities. However, increasing attention is being directed to the vulnerability of our public buildings/places, public security and national defense facilities to terrorist attack or the accidental release of air-borne biological pathogens, harmful chemicals, or radioactive contaminants. The Indoor Air Nuclear, Biological, and Chemical Health Modeling and Assessment System (IA-NBC-HMAS) was developed to serve as a health impact analysis tool for use in addressing these concerns. The overall goal was to develop a user-friendly fully functional prototype Health Modeling and Assessment system, which will operate under the PNNL FRAMES system for ease of use and to maximize its integration with other modeling and assessment capabilities accessible within the FRAMES system (e.g., ambient air fate and transport models, water borne fate and transport models, Physiologically Based Pharmacokinetic models, etc.). The prototype IA-NBC-HMAS is designed to serve as a functional Health Modeling and Assessment system that can be easily tailored to meet specific building analysis needs of a customer. The prototype system was developed and tested using an actual building (i.e., the Churchville Building located at the Aberdeen Proving Ground) and release scenario (i.e., the release and measurement of tracer materials within the building) to ensure realism and practicality in the design and development of the prototype system. A user-friendly "demo" accompanies this report to allow the reader the opportunity for a "hands on" review of the prototype system's capability.

Stenner, Robert D.; Hadley, Donald L.; Armstrong, Peter R.; Buck, John W.; Hoopes, Bonnie L.; Janus, Michael C.

2001-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "forced air system" 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

Indoor Air Nuclear, Biological, and Chemical Health Modeling and Assessment System  

SciTech Connect

Indoor air quality effects on human health are of increasing concern to public health agencies and building owners. The prevention and treatment of 'sick building' syndrome and the spread of air-borne diseases in hospitals, for example, are well known priorities. However, increasing attention is being directed to the vulnerability of our public buildings/places, public security and national defense facilities to terrorist attack or the accidental release of air-borne biological pathogens, harmful chemicals, or radioactive contaminants. The Indoor Air Nuclear, Biological, and Chemical Health Modeling and Assessment System (IA-NBC-HMAS) was developed to serve as a health impact analysis tool for use in addressing these concerns. The overall goal was to develop a user-friendly fully functional prototype Health Modeling and Assessment system, which will operate under the PNNL FRAMES system for ease of use and to maximize its integration with other modeling and assessment capabilities accessible within the FRAMES system (e.g., ambient air fate and transport models, water borne fate and transport models, Physiologically Based Pharmacokinetic models, etc.). The prototype IA-NBC-HMAS is designed to serve as a functional Health Modeling and Assessment system that can be easily tailored to meet specific building analysis needs of a customer. The prototype system was developed and tested using an actual building (i.e., the Churchville Building located at the Aberdeen Proving Ground) and release scenario (i.e., the release and measurement of tracer materials within the building) to ensure realism and practicality in the design and development of the prototype system. A user-friendly "demo" accompanies this report to allow the reader the opportunity for a "hands on" review of the prototype system's capability.

Stenner, Robert D.; Hadley, Donald L.; Armstrong, Peter R.; Buck, John W.; Hoopes, Bonnie L.; Janus, Michael C.

2001-03-01T23:59:59.000Z

362

Mesoscale Convective Systems in Weakly Forced Large-Scale Environments. Part II: Generation of a Mesoscale Initial Condition  

Science Conference Proceedings (OSTI)

A series of five mesoscale convective systems (MCSs) developed within a weakly forced large-scale environment on 11 and 12 May 1982. Two of these systems had a large component of motion against the midtroposphoric flow and propagated in a ...

David J. Stensrud; J. Michael Fritsch

1994-09-01T23:59:59.000Z

363

Mesoscale Convective Systems in Weakly Forced Large-Scale Environments. Part III: Numerical Simulations and Implications for Operational Forecasting  

Science Conference Proceedings (OSTI)

During a 24-h period, beginning 1200 UTC 11 May 1982, a series of mesoscale convective systems developed within a weakly forced large-scale environment. Two of these systems had a large component of motion against the midtropospheric flow and ...

David J. Stensrud; J. Michael Fritsch

1994-09-01T23:59:59.000Z

364

Performance Assessment of a Variable Refrigerant Flow Heat Pump Air Conditioning System  

Science Conference Proceedings (OSTI)

Variable refrigerant flow (VRF) technology uses smart integrated controls, variable speed drives, and refrigerant piping to provide energy efficiency, flexible operation, ease of installation, low noise, zone control, and comfort through all-electric technology. This report describes and documents the construction, performance, and application of a heat pump air conditioning system that uses VRF technology8212the Daikin VRV system. This variable refrigerant volume (VRV) system is manufactured by Daikin I...

2008-12-17T23:59:59.000Z

365

Application of the VRV Air-Conditioning System Heat Recovery Series in Interior Zone and Analysis of its Energy Saving  

E-Print Network (OSTI)

To reduce the energy consumption of air conditioning systems, we can use the VRV air conditioning system to supply cold loads in the winter for rooms in the construction inner zone where cold loads need to be supplied. The VRV air-conditioning system of variable frequency technology can achieve the effect of energy conservation. In this article, we analyze the application of the VRV air conditioning system heat recovery series in the construction inner zone and its energy saving characteristics via a project example.

Zhang, Q.; Li, D.; Zhang, J.

2006-01-01T23:59:59.000Z

366

Development of standardized air-blown coal gasifier/gas turbine concepts for future electric power systems  

Science Conference Proceedings (OSTI)

The objective of this study is to develop standardized air blown fixed bed gasification hot gas cleanup integrated gasifier combined cycle (IGCC) systems.

Sadowski, R.S.; Brown, M.J.; Hester, J.C.; Harriz, J.T.; Ritz, G.J.

1991-02-01T23:59:59.000Z

367

Management processes in U.S. air traffic management modernization : a study of global navigation satellite system development  

E-Print Network (OSTI)

This thesis investigates organization and management issues associated with the Federal Aviation Administration's (FAA) efforts to modernize the nation's Air Traffic Management (ATM) system. Focus is placed specifically ...

Sandvig, John H.

1994-01-01T23:59:59.000Z

368

Improve Compressed Air System Performance with AIRMaster+, Software Tools for Industry, Industrial Technologies Program (ITP) (Fact Sheet)  

SciTech Connect

This fact sheet describes how the Industrial Technologies Program AIRMaster+ software tool can help industrial plants optimize compressed air system efficiency.

2008-12-01T23:59:59.000Z

369

Dual Path HVAC System Demonstration in School: Leveraging Thermal Energy Storage and Cold Air Distribution to Enhance System Perform ance in a Florida Elementary School  

Science Conference Proceedings (OSTI)

This document reports on a novel dual-path, low-temperature air distribution system demonstrated in a Florida elementary school. This system addresses high humidity levels and indoor air quality problems normally found in schools due to their large ventilation requirements, especially in humid climates. The dual-path system is also integrated with synergistic use of thermal energy storage and low-temperature air distribution, reduced energy use, and initial cost. The field data confirmed that the system ...

2002-10-21T23:59:59.000Z

370

ALTERNATE HIGH EFFICIENCY PARTICULATE AIR (HEPA) FILTRATION SYSTEM  

SciTech Connect

In Phase IIA of this project, CeraMem has further developed and scaled up ceramic HEPA filters that are appropriate for use on filtration of vent gas from HLW tanks at DOE sites around the country. This work included procuring recrystallized SiC monoliths, developing membrane and cement materials, and defining a manufacturing process for the production of prototype full sizes HEPA filters. CeraMem has demonstrated that prototype full size filters can be manufactured by producing 9 full size filters that passed DOP aerosol testing at the Oak Ridge Filter Test Facility. One of these filters was supplied to the Savannah River Technical Center (SRTC) for process tests using simulated HLW tank waste. SRTC has reported that the filter was regenerable (with some increase in pressure drop) and that the filter retained its HEPA retention capability. CeraMem has also developed a Regenerable HEPA Filter System (RHFS) design and acceptance test plan that was reviewed by DOE personnel. The design and acceptance test plan form the basis of the system proposal for follow-on work in Phase IIB of this project.

Bruce Bishop; Robert Goldsmith; Karsten Nielsen; Phillip Paquette

2002-08-16T23:59:59.000Z

371

Validation of the RVACS (Reactor Vessel Auxiliary Cooling System)/RACS (Reactor Air Cooling System) model in SASSYS-1  

SciTech Connect

The SASSYS-1 LMR systems analysis code contains a model for transient analysis of heat removal by a RVACS (Reactor Vessel Auxiliary Cooling System) or a RACS (Reactor Air Cooling System) in an LMR (Liquid Metal Reactor). This model has been validated by comparisons of model predictions with experimental data from a large scale RVACS/RACS simulation experiment performed at Argonne National Laboratory. 4 refs., 1 fig.

Dunn, F.E.

1987-01-01T23:59:59.000Z

372

Analysis System for Measurement of CO2 Mixing Ratios in Flask Air Samples  

Science Conference Proceedings (OSTI)

A system for measuring the concentration of CO2 in flask air samples from the NOAA/CMDL worldwide flask sampling network is described. Up to 180 samples per day can he analyzed using a nondispersive infrared CO2 analyzer. All data acquisition and ...

Kirk W. Thoning; Thomas J. Conway; Ni Zhang; Duane Kitzis

1995-12-01T23:59:59.000Z

373

Environmental turbulent mixing controls on air-water gas exchange in marine and aquatic systems  

E-Print Network (OSTI)

climatically important trace gas fluxes on regional and global scales, yet the magnitude of the transfer-generated turbulence in a shallow tidal sea, Nature, 400, 251­254. Raymond, P. A., and J. J. Cole (2001), Gas exchangeEnvironmental turbulent mixing controls on air-water gas exchange in marine and aquatic systems

Ho, David

374

Dynamical Aspects of Wintertime Cold-Air Pools in an Alpine Valley System  

Science Conference Proceedings (OSTI)

This study presents high-resolution numerical simulations in order to examine the dynamical mechanisms controlling the persistence of wintertime cold-air pools in an Alpine valley system. First, a case study of a cold-pool episode is conducted, ...

Gnther Zngl

2005-09-01T23:59:59.000Z

375

Linkage to Previous International PV Module QA Task Force Workshops; Proposal for Rating System (Presentation)  

DOE Green Energy (OSTI)

This presentation gives the historical background of the creation of the International PV QA Task Force as an introduction to the PV Module Reliability Workshop.

Kurtz, S.; Wohlgemuth, J.; Sample, T.; Yamamichi, M.; Kondo, M.

2013-05-01T23:59:59.000Z

376

Night air cargo operations flyover noise mitigation by a municipality  

Science Conference Proceedings (OSTI)

A 1981 Air Force Draft Environmental ImpactAnalysis (DEIA) on converting Rickenbacker Air National Guard Base (RANGB

Angelo J. Campanella

1985-01-01T23:59:59.000Z

377

The use of air as a natural tracer infractured hydrothermal systems, Los Azufres, Mexico, case study  

DOE Green Energy (OSTI)

Injection of atmospheric air mixed with cold water has been occurring since 1982 at the Los Azufres geothermal field. Several chemical and thermodynamical evidences show that air injection into this fractured hydrothermal system could be considered as a long term natural tracer test. Nitrogen and Argon separated from the air mixture migrate, under the action of the induced injection-extraction gradient, from reinjection sectors to production zones following preferential paths closely related to high permeability conduits. A coarse numerical estimation of the average permeability tensor existing at Tejamaniles, the southern sector, explains the unsuccessful recovery of the artificial tracer tests performed in past years: the anisotropic nature of the fractured volcanic rock would demand considerably quantities of tracer in order to be detected at the producing wells, especially when fluid extraction was low. At the same time concentrations of calcium, cesium, chloride, potassium, rubidium and sodium, are increasing in the liquid produced by the oldest wells of this field's sector.

Mario Cesar Sudrez Arriaga; Hector Gutierrez Puente, Josefina Moreno Ochoa

1991-01-01T23:59:59.000Z

378

Control Humidity With Single-Duct, Single-Zone, Constant Air Volume System  

E-Print Network (OSTI)

The lecture hall of the Richardson Petroleum Building at Texas A&M University is a large lecture hall, with a total floor area of approximately 2500 ft^2. The lecture hall was served by a constant air volume (CAV) air handling unit (AHU) which had no reheat coil. This resulted in high room humidity levels although the room temperature was satisfied for part load conditions, especially when there was very little sensible load from the room. This paper presents Continuous Commissioning efforts (CC), which turned this inefficient, humid lecture hall into a comfortable learning environment. This case study also explores other possibilities to solve the humidity control problem with single-duct, single-zone constant air volume systems.

Chen, H.; Deng, S.; Bruner, H. L.; Claridge, D. E.

2000-01-01T23:59:59.000Z

379

New fault locating system for air-insulated substations using optical current detector  

Science Conference Proceedings (OSTI)

This paper deals with a newly developed fault locating system. This fault locating system helps to shorten the time required for restoration of service after the occurrence of a busbar fault in an air-insulated distribution substation. Recent optical and electronic technologies allow highly accurate and compact fault locating system, which consists of optical current detectors using Faraday effect and a fault locating processor employing digital data processing technique. The fault location is made by discriminating the direction of zero-sequence currents. Through various tests and field operations it has been confirmed that the system has sufficient performance for practical application.

Yoshida, Y.; Kawazoe, S. (Kansai Electric Power Co., Inc., Osaka (Japan)); Ibuki, K.; Yamada, K.; Ochi, N. (Mitsubishi Electric Corp., Amagasaki, Hyogo (Japan). Itami Works)

1992-10-01T23:59:59.000Z

380

The Experimentation System Design and Experimental Study of the Air-Conditioning by Desiccant Type Using Solar Energy  

E-Print Network (OSTI)

Using a special solar air heater to gain heat power for regenerating an adsorption desiccant wheel made by composite silica gel, a desiccant air-conditioning experimentation system was designed and manufactured. Combining the advantage of measure and control by PLC and the software of Kingview, the whole year's operating results of this system was tested and analysed. The results indicate this system can keep the indoor air temperature range at 262C and the relative humidity range being 50-70% under the low electricity cost on the whole year in the south of China region when the special solar air heater can offer flux air heating up to 60C. In this paper some ideas are offered in order to facilitate the availability for air-conditioning using low grade energy, for example, solar energy and surplus or waste heat energy in the industrial process.

Zhuo, X.; Ding, J.; Yang, X.; Chen, S.; Yang, J.

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "forced air system" 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.


381

Start-Up of Air Conditioning Systems After Periods of Shutdown (Humidity Considerations)  

E-Print Network (OSTI)

In many cases the single most important energy conservation measure that can be taken is to turn equipment off when it is not needed. In the case of air conditioning, this generally means turning it off when occupants leave and turning it back on in time to have the space comfortable when they return. In humid climates special problems are often encountered when a system is restarted after a period of shutdown. The temperature and humidity in the space rises during the period of shutdown. Unfortunately the latent load required to bring the space back to comfort conditions is usually much higher than the sensible load. Most methods of control are ill suited for this duty. This paper examines the response of various types of air conditioning systems during this recovery period and makes recommendations for system designers.

Todd, T. R.

1986-01-01T23:59:59.000Z

382

Modeling of an adiabatic packed bed brine-air contactor for use in a solar energy driven food processing system  

Science Conference Proceedings (OSTI)

A mathematical model was developed for a packed bed brine-air contacting system which has applications in a solar energy driven food processing system. The model considers mass transfer resistances of both phases, but neglects the heat transfer resistance of the liquid phase. It takes into account the large heat effects associated with water absorption into and desorption from the brine. A computational method was also developed to calculate the minimum air flow rate which would prevent a pinch. A packed bed brine-air contactor was built, and experiments were conducted for a range of brine and air conditions. Good agreement between the computed and experimental results warrants use of the model to design and optimize the packed bed water stripping process. A periodic-flow packed bed heat regenerator was built to recover heat from the exit air of the contactor so as to improve the energy efficiency of the system. It was possible to preheat the inlet air to a temperature close to that of the exit air. The inlet air, however, during its passage through the regenerator picked up the condensate deposited from the exit air. This led to a decrease in the driving potential to mass transfer in the contactor. Optimization studies show that using a combined solar driven boiler and air assisted packed bed water stripper would be more economical than using a solar driven boiler alone or using flat plate solar collectors to drive the water stripper.

Biswal, R.N.

1983-01-01T23:59:59.000Z

383

Assuring safety through operational approval : challenges in assessing and approving the safety of systems-level changes in air transportation  

E-Print Network (OSTI)

To improve capacity and efficiency of the air transportation system, a number of new systems-level changes have been proposed. Key aspects of the proposed changes are combined functionality across technology and procedures ...

Weibel, Roland E. (Roland Everett)

2010-01-01T23:59:59.000Z

384

Module Development and Simulation of the Variable Refrigerant Flow Air Conditioning System under Cooling Conditions in Energyplus  

E-Print Network (OSTI)

As a high-efficiency air conditioning scheme, the variable refrigerant flow (VRF) air-conditioning system is finding its way into medium-sized office buildings. Based on a generic dynamic building energy simulation environment, EnergyPlus, a new module is developed and the energy usage of the VRF system is investigated. This paper compares the energy consumption of the VRF system with that of two conventional air-conditioning systems, namely, the variable air volume (VAV) system and the fan-coil plus fresh air (FPFA) system. A generic office building is used to accommodate the different types of heating, ventilating, and air conditioning (HVAC) systems. Our objective is to examine the energy consumption of the VRF system applied to office buildings and make suggestions for evaluating and making decisions on HVAC systems in the early stages of building design. Simulation results show that the energy-saving potential of the VRF system is expected to achieve 22.2 percent and 11.7 percent, compared to the VAV system and the FPFA system, respectively. An energy-usage breakdown of electricity end-users in various systems is also presented.

Zhou, Y.; Wu, J.; Wang, R.; Shiochi, S.

2006-01-01T23:59:59.000Z

385

A low cost, DC-coupled active vibration isolation system  

E-Print Network (OSTI)

In this thesis, I designed and implemented an isolation system that interfaces with traditional air mounts for improved force disturbance rejection relative to passive optical tables.Force disturbance rejection and position ...

Miu, Kevin Kar-Leung

2008-01-01T23:59:59.000Z

386

Direct-contact air/molten salt heat exchange for solar-thermal systems  

DOE Green Energy (OSTI)

Heat exchangers employing direct contact between molten draw salt and air were studied for use in solar industrial process heat (IPH) systems. Direct-contact systems consisting of a fin-tube preheater and a spray or packed column were compared to conventional heat exchangers. Direct contact reduced the IPH system cost by 5% to 10%. The direct-contact heat exchangers cost only 15% to 30% as much as comparable conventional exchangers. However, the rate of salt degradation by CO/sup 2/ and H/sub 2/O must be determined to see if it is acceptable.

Wright, J.D.; d'Agincourt, C.

1982-05-01T23:59:59.000Z

387

FY 1977 Progress report, Compressed air energy storage advanced systems analysis.  

DOE Green Energy (OSTI)

The goal of the Compressed Air Energy Storage (CAES) Advanced Systems Analysis task is to accelerate the development of new technologies that will reduce the consumption of natural gas and oil. The immediate overall objectives of this program are to: (1) provide a screening cost assessment for thermal energy storage (TES) systems that are suitable for CAES applications; (2) establish the potential fuel savings of hybrid CAES cycles that incorporate TES for recovery of the heat of compression and estimate the economic incentive for using TES in CAES systems; and (3) investigate modified CAES cycles that eliminate the use of gas and oil by the use of alternative fuels.

Kreid, D.K.; McKinnon, M.A.

1978-03-01T23:59:59.000Z

388

LiCl Dehumidifier LiBr absorption chiller hybrid air conditioning system with energy recovery  

SciTech Connect

This invention relates to a hybrid air conditioning system that combines a solar powered LiCl dehumidifier with a LiBr absorption chiller. The desiccant dehumidifier removes the latent load by absorbing moisture from the air, and the sensible load is removed by the absorption chiller. The desiccant dehumidifier is coupled to a regenerator and the desiccant in the regenerator is heated by solar heated hot water to drive the moisture therefrom before being fed back to the dehumidifier. The heat of vaporization expended in the desiccant regenerator is recovered and used to partially preheat the driving fluid of the absorption chiller, thus substantially improving the overall COP of the hybrid system.

Ko, Suk M. (Huntsville, AL)

1980-01-01T23:59:59.000Z

389

Cascade Reverse Osmosis Air Conditioning System: Cascade Reverse Osmosis and the Absorption Osmosis Cycle  

SciTech Connect

BEETIT Project: Battelle is developing a new air conditioning system that uses a cascade reverse osmosis (RO)-based absorption cycle. Analyses show that this new cycle can be as much as 60% more efficient than vapor compression, which is used in 90% of air conditioners. Traditional vapor-compression systems use polluting liquids for a cooling effect. Absorption cycles use benign refrigerants such as water, which is absorbed in a salt solution and pumped as liquidreplacing compression of vapor. The refrigerant is subsequently separated from absorbing salt using heat for re-use in the cooling cycle. Battelle is replacing thermal separation of refrigerant with a more efficient reverse osmosis process. Research has shown that the cycle is possible, but further investment will be needed to reduce the number of cascade reverse osmosis stages and therefore cost.

None

2010-09-01T23:59:59.000Z

390

Boiler Upgrades and Decentralizing Steam Systems Save Water and Energy at Naval Air Station Oceana  

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

Location at NAS Oceana. Location at NAS Oceana. by these changes, including bachelor housing, hangers, the galley, office buildings, the chapel, and maintenance facilities. This ESPC also included installing ground source heat pumps in three buildings, adding digital control systems to increase heating, ventilation and air conditioning (HVAC) efficiency, efficient lighting retrofits, and other water conservation measures. These other water conservation measures include over 5,000 water efficient domestic fixtures, includ- ing faucets, showerheads, and toilets

391

Boiler Upgrades and Decentralizing Steam Systems Save Water and Energy at Naval Air Station Oceana  

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

Location at NAS Oceana. Location at NAS Oceana. by these changes, including bachelor housing, hangers, the galley, office buildings, the chapel, and maintenance facilities. This ESPC also included installing ground source heat pumps in three buildings, adding digital control systems to increase heating, ventilation and air conditioning (HVAC) efficiency, efficient lighting retrofits, and other water conservation measures. These other water conservation measures include over 5,000 water efficient domestic fixtures, includ- ing faucets, showerheads, and toilets

392

Low-Fuel Compressed Air Energy Storage System Development and Preliminary Evaluation  

Science Conference Proceedings (OSTI)

Compressed air energy storage (CAES) is a valuable solution for mitigating the current challenges of renewable power variability, facilitating future higher renewable penetration levels, enhancing grid reliability and improving the utilization of transmission and existing generation assets. Fuel-based CAES systems are subject to future natural gas price volatility and potential carbon dioxide (CO2) emission charges. Low-Fuel CAES (LFCAES) is a potential near-term technology that captures and stores heat ...

2010-12-17T23:59:59.000Z

393

Impact of cool storage air-conditioning in commercial sector on power system operation in Thailand  

SciTech Connect

The results are presented from an investigation into the potential application for cool storage air-conditioning, and the resultant beneficial impact on power system operation in Thailand is discussed. Field assessment through interviews with decision makers in the identified customer groups produces results that show good potential for cool storage application. Results from a computer program used to calculate power production cost and other characteristics show that substantial benefits would also accrue to the generating utility.

Surapong, C.; Bundit, L. [Asian Inst. of Tech., Bangkok (Thailand)

1997-05-01T23:59:59.000Z

394

Energy Basics: Solar Air Heating  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

EERE: Energy Basics Solar Air Heating Solar air heating systems use air as the working fluid for absorbing and transferring solar energy. Solar air collectors (devices to heat air...

395

New Automotive Air Conditioning System Simulation Tool Developed in MATLAB/Simulink  

DOE Green Energy (OSTI)

Further improvements in vehicle fuel efficiency require accurate evaluation of the vehicle's transient total power requirement. When operated, the air conditioning (A/C) system is the largest auxiliary load on a vehicle; therefore, accurate evaluation of the load it places on the vehicle's engine and/or energy storage system is especially important. Vehicle simulation software, such as 'Autonomie,' has been used by OEMs to evaluate vehicles' energy performance. A transient A/C simulation tool incorporated into vehicle simulation models would also provide a tool for developing more efficient A/C systems through a thorough consideration of the transient A/C system performance. The dynamic system simulation software Matlab/Simulink was used to develop new and more efficient vehicle energy system controls. The various modeling methods used for the new simulation tool are described in detail. Comparison with measured data is provided to demonstrate the validity of the model.

Kiss, T.; Chaney, L.; Meyer, J.

2013-07-01T23:59:59.000Z

396

Improving Energy Efficiency in Pharmaceutical ManufacturingOperations -- Part I: Motors, Drives and Compressed Air Systems  

Science Conference Proceedings (OSTI)

In Part I of this two-part series, we focus on efficient use of motors, drives and pumps, both for process equipment and compressed air systems. Pharmaceutical manufacturing plants in the U.S. spend nearly $1 billion each year for the fuel and electricity they need to keep their facilities running (Figure 1, below). That total that can increase dramatically when fuel supplies tighten and oil prices rise, as they did last year. Improving energy efficiency should be a strategic goal for any plant manager or manufacturing professional working in the drug industry today. Not only can energy efficiency reduce overall manufacturing costs, it usually reduces environmental emissions, establishing a strong foundation for a corporate greenhouse-gas-management program. For most pharmaceutical manufacturing plants, Heating, Ventilation and Air Conditioning (HVAC) is typically the largest consumer of energy, as shown in Table 1 below. This two-part series will examine energy use within pharmaceutical facilities, summarize best practices and examine potential savings and return on investment. In this first article, we will focus on efficient use of motors, drives and pumps, both for process equipment and compressed air systems. Part 2, to be published in May, will focus on overall HVAC systems, building management and boilers.

Galitsky, Christina; Chang, Sheng-chien; Worrell, Ernst; Masanet,Eric

2006-04-01T23:59:59.000Z

397

The Earth-Coupled or Geothermal Heat Pump Air Conditioning System  

E-Print Network (OSTI)

As utility costs have risen despite political campaign promises and energy conserving measures implemented by the utility companies such as alternative fuel use (coal and nuclear), co-generation, etc., homeowners have begun to search for effective methods of reducing their electricity bills. In some cases homeowners are faced with utility bills That are approaching the cost of their mortgage payments. For those with fixed incomes, such as the elderly or those looking forward to retirement in the near future, this has become an alarming reality. Virtually every homeowner would like to reduce his utility bill but the question is, what items should he address in order to have a significant impact on his electricity costs? According to Houston Lighting h Power Company, 50% of an electricity bill can be attributed to the air conditioning system, and another 15-20% to the hot water heating system. Therefore, to dramatically reduce utility costs one should look first at these two "energy gulpers" and next at proper home insulation, window coverings, etc. The other electrical appliances in the home use relatively minor amounts of electricity compared to the air conditioning and hot water heating system. This paper will describe the geothermal heat pump and the desuperheater as the latest developments in energy efficient air conditioning and water heating.

Wagers, H. L.; Wagers, M. C.

1985-01-01T23:59:59.000Z

398

Air thermosiphon solar heating system: the Jones house, Santa Fe, New Mexico  

DOE Green Energy (OSTI)

A hybrid passive/active solar heating system, featuring a passive air thermosiphon loop, is described. Heated air is supplied to a rock storage bin, coupled with blower-driven air distribution to the house. The house, of 246 m/sup 2/ (2650 ft/sup 2/) heated area and located in Santa Fe, New Mexico, also includes a greenhouse located under the planar collector array. Architectural features and construction details of the house, the solar collector, storage, and distribution system are presented. Representative results of three months of monitoring by the Los Alamos Scientific Laboratory of collector, rock bin, and greenhouse temperatures, as well as outside ambient temperature and insolation, are reported and discussed. Data recorded hourly since the system was placed in operation in early February 1978, show temperatures in the rock bin in excess of 71/sup 0/C (160/sup 0/F) and in the collector absorber mesh in excess of 93/sup 0/C (200/sup 0/F). Delivery temperatures from the charged bin, without auxiliary boost, range from 38 to 54/sup 0/C (100 to 130/sup 0/F).

Hunn, B.D.; Jones, M.M.

1978-01-01T23:59:59.000Z

399

Analysis of the AirTouch automatic vehicle location system's ability to locate moving vehicles  

E-Print Network (OSTI)

Automatic vehicle location systems are becoming more prevalent in diverse transportation applications. Their ability to locate vehicles can assist in locating emergency and public transit vehicles for better real-time dispatching as well as recovering stolen vehicles. Because many applications require traveling vehicles, this thesis focused on the AirTouch system's ability to accurately locate a moving vehicle. Recent AirTouch vehicle location system reports were compiled and analyzed to distinguish what factors tend to affect the accuracy of the readings. Based on the results of the reports, two sites were selected to minimize the external effects that could create inaccurate readings. Six speeds were selected ranging from 0 to 80 kmph (O to 50 mph) in 16 kmph (10 mph) increments. Each velocity was tested 20 times at each site. The location readings were compared to differential Global Positioning System (dGPS) readings which currently provide the most accurate location readings available for civilian use. The dGPS readings were also collected at each test site. It was discovered that one site produced more accurate readings compared to the other site. In addition, the longitude differences accounted for most of the error in the readings. Finally, more error was prevalent in the readings associated with the vehicle's direction of travel as opposed to readings perpendicular to the direction of travel. Based on the data analysis, it was impossible to conclude if velocity affected the accuracy of the AirTouch system. The results of this thesis have suggested that the AirTouch system does decrease in accuracy as the velocity increases among traveling vehicles. However, in one case, the accuracy of the stationary readings were less accurate compared to the non-stationary readings. At 80 kmph (50 mph), AirTouch had an approximate inaccuracy of 50 meters (164 feet). When the data was adjusted for human error, this approximate inaccuracy decreased to 33 meters (107 feet). For transit services, these averages are appropriate. When dispatching a transit vehicle, two-way communication between dispatcher and driver can verify the vehicle's exact location. Furthermore, when a customer needs to know where a vehicle is and when it should arrive, 33 to 50 meters (107 to 164 feet) is sufficient for the customers' needs.

Henry, Tracy Lynn

1995-01-01T23:59:59.000Z

400

A genetic rule weighting and selection process for fuzzy control of heating, ventilating and air conditioning systems  

Science Conference Proceedings (OSTI)

In this paper, we propose the use of weighted linguistic fuzzy rules in combination with a rule selection process to develop accurate fuzzy logic controllers dedicated to the intelligent control of heating, ventilating and air conditioning systems concerning ... Keywords: BEMS, building energy management system, FLC, fuzzy logic controller, Fuzzy logic controllers, GA, genetic algorithm, Genetic algorithms, HVAC systems, HVAC, heating, ventilating, and air conditioning, KB, knowledge base, PMV, predicted mean vote index for thermal comfort, Rule selection, Weighted fuzzy rules

Rafael Alcal; Jorge Casillas; Oscar Cordn; Antonio Gonzlez; Francisco Herrera

2005-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "forced air system" 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.


401

Distribution of small dispersive coal dust particles and absorbed radioactive chemical elements in conditions of forced acoustic resonance in iodine air filter at nuclear power plant  

E-Print Network (OSTI)

The physical features of distribution of the small dispersive coal dust particles and the adsorbed radioactive chemical elements and their isotopes in the absorber with the granular filtering medium with the cylindrical coal granules were researched in the case of the intensive air dust aerosol stream flow through the iodine air filter (IAF). It was shown that, at the certain aerodynamic conditions in the IAF, the generation of the acoustic oscillations is possible. It was found that the acoustic oscillations generation results in an appearance of the standing acoustic waves of the air pressure (density) in the IAF. In the case of the intensive blow of the air dust aerosol, it was demonstrated that the standing acoustic waves have some strong influences on both: 1) the dynamics of small dispersive coal dust particles movement and their accumulation in the IAF; 2) the oversaturation of the cylindrical coal granules by the adsorbed radioactive chemical elements and their isotopes in the regions, where the antin...

Ledenyov, Oleg P

2013-01-01T23:59:59.000Z

402

Forced Boundary-Layer Transition on X-43 (Hyper-X) in NASA LaRC 31-Inch Mach 10 Air Tunnel  

Science Conference Proceedings (OSTI)

Aeroheating and boundary layer transition characteristics for the X-43 (Hyper-X) configuration have been experimentally examined in the Langley 31-Inch Mach 10 Air Tunnel. Global surface heat transfer distributions, and surface streamline patterns were ...

Berry Scott A.; DiFulvio Michael; Kowalkowski Matthew K.

2000-08-01T23:59:59.000Z

403

Forced Boundary-Layer Transition on X-43 (Hyper-X) in NASA LaRC 20-Inch Mach 6 Air Tunnel  

Science Conference Proceedings (OSTI)

Aeroheating and boundary layer transition characteristics for the X-43 (Hyper-X) configuration have been experimentally examined in the Langley 20-Inch Mach 6 Air Tunnel. Global surface heat transfer distributions, and surface streamline patterns were ...

Berry Scott A.; DiFulvio Michael; Kowalkowski Matthew K.

2000-08-01T23:59:59.000Z

404

Influencing Factors on Energy Consumption of Air Conditioning System in Railway Passenger Station Based on Orthogonal Experiment  

Science Conference Proceedings (OSTI)

Orthogonal experiment was used to analyze the energy consumption of air conditioning system, which belongs to four typical passenger stations in four regions, including severe cold region, cold region, hot summer and cold winter region, hot summer and ... Keywords: Railway Passenger Station, Orthogonal Experiment, Air Conditioning Energy Consumption, Energy Conservation

Weiwu Ma; Liqing Li; Suoying He; Jia Cheng; Guijie Huang; Chenn Q. Zhou

2012-01-01T23:59:59.000Z

405

Microsoft Word - 41020_GE_Adv Combustion System_Factsheet_Rev01...  

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

General Electric, Air Force Research Lab II.) Description A. Objective: Develop a new gas turbine combustion system design with 50% lower emissions, and demonstrate it at...

406

Air core poloidal magnetic field system for a toroidal plasma producing device  

DOE Patents (OSTI)

A poloidal magnetics system for a plasma producing device of toroidal configuration is provided that reduces both the total volt-seconds requirement and the magnitude of the field change at the toroidal field coils. The system utilizes an air core transformer wound between the toroidal field (TF) coils and the major axis outside the TF coils. Electric current in the primary windings of this transformer is distributed and the magnetic flux returned by air core windings wrapped outside the toroidal field coils. A shield winding that is closely coupled to the plasma carries a current equal and opposite to the plasma current. This winding provides the shielding function and in addition serves in a fashion similar to a driven conducting shell to provide the equilibrium vertical field for the plasma. The shield winding is in series with a power supply and a decoupling coil located outside the TF coil at the primary winding locations. The present invention requires much less energy than the usual air core transformer and is capable of substantially shielding the toroidal field coils from poloidal field flux.

Marcus, Frederick B. (Clinton, TN)

1978-01-01T23:59:59.000Z

407

Evaluation of a residential solar air heating system. Interim progress report, August 1976--May 1977. [Comparison of air-type and liquid-type collectors  

SciTech Connect

The comparative performance of Solar House II collectors (air heater) and Solar House I collectors (liquid heater) is presented. In the 1976 comparison year, there is no conclusive evidence that either system provides a greater fraction of the seasonal load. Both systems were designed to provide approximately 75 percent of the annual space and water heating load, and the design targets are reasonably achieved. In February, 1976, the air system provided 65 percent of the total requirement while the liquid system provided 76 percent. In March, based on a few days of data, the performance was substantially the same. In April the air system provided a greater fraction of solar heat to the total need, but the use of the heat was different, more being used for domestic water heating in Solar House I than in Solar House II. The data for 1977 have not yet been fully analyzed for both solar houses and therefore, a complete comparison cannot be made. At this stage in the evaluations, it can be stated that either system can be designed to achieve the target fraction of the total annual heat requirements. (WHK)

Karaki, S.

1977-05-01T23:59:59.000Z

408

Method and system for measuring gate valve clearances and seating force  

DOE Patents (OSTI)

Valve clearances and seating force, as well as other valve operational parameters, are determined by measuring valve stem rotation during opening and closing operations of a translatable gate valve. The magnitude of the stem rotation, and the relative difference between the stem rotation on opening and closing provides valuable data on the valve internals in a non-intrusive manner.

Casada, Donald A. (Knoxville, TN); Haynes, Howard D. (Knoxville, TN); Moyers, John C. (Oak Ridge, TN); Stewart, Brian K. (Burns, TN)

1996-01-01T23:59:59.000Z

409

Use of an auditory signal in a rear-end collision warning system: effects on braking force and reaction time  

E-Print Network (OSTI)

This simulator experiment is a preliminary study examining the effects of different auditory signals on braking force and reaction time in a rear-end collision warning system. A driving simulator was built in which subjects operated a computer driving game. Superimposed on the game screen was the image of a car which appeared to the driver to be ahead of him/her. The image enlarged in size, appearing to be a car applying its brakes. The participant was instructed to react as he would in a real driving situation by applying his/her brakes. Closing velocities of 10 miles per hour and 30 miles per hour were used. Braking times and forces were measured for four different warning sounds: 1) no warning; 2) a pulsed warning sound that increased in repetition rate; 3) a sound that increased in frequency; and, 4) a sound that increased in intensity. Results suggested that an auditory warning signal would decrease reaction time and increase maximum braking force applied. The sound that increased in frequency and the sound that increased in intensity provided the greatest savings in reaction time, approximately one quarter second, when compared to the no warning condition. The pulsed warning sound provided the greatest increase in braking force. Participants preferred the pulsed sound over the other warning sounds. Further research must be done to determine if the warning sounds decrease the reaction time enough to cause a significant reduction in accidents.

Hopkins, Jennifer Susan

1995-01-01T23:59:59.000Z

410

ESS 2012 Peer Review - Modular Undersea Compressed Air Energy Storage (UCAES) System - James Kesseli, Brayton Energy  

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

solar.energy.gov/sunshot/csp.html solar.energy.gov/sunshot/csp.html ENERGY STORAGE SYSTEMS: Sept. 27, 2012 Modular Undersea Compressed Air Energy Storage (UCAES) System Bill Caruso www.BraytonEnergy.com Brayton Energy LLC Project Overview UCAES has the potential to offer modular, grid scale storage capability at competitive costs when coupled with high efficiency power conversion systems. The nature of the design minimizes vessel stress and aesthetic impact, while utilizing readily available material and construction techniques. Progress Future Work Further feasibility and cost studies must be conducted by experienced maritime construction contractors. The market for UCAES systems must be explored further by conducting broader case studies of bathymetry, terrain, infrastructure and natural and/or renewable energy resource potential.

411

Selection of the most advantageous gas turbine air filtration system: Comparative study of actual operating experience  

SciTech Connect

This paper discusses relative merits of three types of air filtration systems used by Sui Northern Gas Pipelines Ltd. (Pakistan), on its gas turbine compressor packages. These Filtration systems are: (i) Two stage inertial plus auto oil bath type multi-duty filters by AAF used on Saturn Mark-1 packages manufactured by Solar Turbines Inc. (ii) Three stage high efficiency barrier filters by AAF used on Centaur packages by Solar. (iii) Single stage pulse-jet self-cleaning filter by Donaldson again used on a Centaur package. The selection is primarily based in package performance data collected over a 15 month period analyzing power loss due to fouling effects and related operation and maintenance costs for the three systems. The Company's operating experience indicates that on new installations the pulse clean system offers the best advantage both in terms of filtration costs as well as availability of additional horse power when operating under moderate to severe environmental conditions.

Gilani, S.I.; Mehr, M.Z.

1985-01-01T23:59:59.000Z

412

Experimental investigation on the photovoltaic-thermal solar heat pump air-conditioning system on water-heating mode  

Science Conference Proceedings (OSTI)

An experimental study on operation performance of photovoltaic-thermal solar heat pump air-conditioning system was conducted in this paper. The experimental system of photovoltaic-thermal solar heat pump air-conditioning system was set up. The performance parameters such as the evaporation pressure, the condensation pressure and the coefficient of performance (COP) of heat pump air-conditioning system, the water temperature and receiving heat capacity in water heater, the photovoltaic (PV) module temperature and the photovoltaic efficiency were investigated. The experimental results show that the mean photovoltaic efficiency of photovoltaic-thermal (PV/T) solar heat pump air-conditioning system reaches 10.4%, and can improve 23.8% in comparison with that of the conventional photovoltaic module, the mean COP of heat pump air-conditioning system may attain 2.88 and the water temperature in water heater can increase to 42 C. These results indicate that the photovoltaic-thermal solar heat pump air-conditioning system has better performances and can stably work. (author)

Fang, Guiyin; Hu, Hainan; Liu, Xu [Department of Physics, Nanjing University, Nanjing 210093 (China)

2010-09-15T23:59:59.000Z

413

Technology transition in the national air transportation system : market failure and game theoretic analysis with application to ADS-B  

E-Print Network (OSTI)

This research analyzes the problem of technology transition in the national air transportation system, focusing on the implementation of Automatic Dependent Surveillance-Broadcast (ADS-B). ADS-B is a key technology in the ...

Hu, Xiaojie

2008-01-01T23:59:59.000Z

414

The Australian Air Quality Forecasting System. Part III: Case Study of a Melbourne 4-Day Photochemical Smog Event  

Science Conference Proceedings (OSTI)

A 4-day photochemical smog event in the Melbourne, Victoria, Australia, region (69 March 2001) is examined to assess the performance of the Australian Air Quality Forecasting System (AAQFS). Although peak ozone concentrations measured during ...

K. J. Tory; M. E. Cope; G. D. Hess; S. Lee; K. Puri; P. C. Manins; N. Wong

2004-05-01T23:59:59.000Z

415

Guidelines for Induced Flue Gas Recirculation: Volume 1: Reducing Air/Gas System Resistance and Enhancing Fan Capacity  

Science Conference Proceedings (OSTI)

This document guides users through a logical sequence, or "road map," of activities and decisions for optimizing solutions for fans, ducts, and related equipment in fossil plant combustion air and gas systems.

1999-12-13T23:59:59.000Z

416

On the Aerosol Particle Size Distribution Spectrum in Alaskan Air Mass Systems: Arctic Haze and Non-Haze Episodes  

Science Conference Proceedings (OSTI)

Aerosols in central Alaskan winter air mass system were classified according to size by diffusive separation and light-scattering spectrometry. Particles entering central Alaska from the Pacific Marine environment had number concentrations ...

Glenn E. Shaw

1983-05-01T23:59:59.000Z

417

Computer program development specification for the air traffic control subsystem of the Man-Vehicle Systems Research Facility.  

E-Print Network (OSTI)

Functional summary: The Air Traffic Control (ATC) Subsystem of the Man-Vehicle System Research Facility (MVSRF) is a hardware/software complex which provides the MVSRF with the capability of simulating the multi-aircraft, ...

Massachusetts Institute of Technology. Flight Transportation Laboratory

1982-01-01T23:59:59.000Z

418

Dal-Tile: Optimized Compressed Air System Improves Performance and Saves Energy at a Tile Manufacturing Plant  

SciTech Connect

This DOE Industrial Technologies Program case study describes the significant energy and costs savings resulting from compressed air system improvements at Dal-Tile, a Texas tile manufacturing plant.

2005-08-01T23:59:59.000Z

419

Duct Systems in large commercial buildings: Physical characterization, air leakage, and heat conduction gains  

E-Print Network (OSTI)

A variety of methods of sealing supply-air registers wereand sealing practices when leakage at connections to duct-mounted equipment is not considered. The measured air-

Fisk, W.J.

2011-01-01T23:59:59.000Z

420

Temperature decoupling control of double-level air flow field dynamic vacuum system based on neural network and prediction principle  

Science Conference Proceedings (OSTI)

Double-level air flow field dynamic vacuum (DAFDV) system is a strong coupling, large time-delay, and nonlinear multi-input-multi-output system. Decoupling and overcoming the impact of time-delay are two keys to obtain rapid, accurate and independent ... Keywords: ASSAVP, BP, DAFDV, Decoupling control, Double-level air flow field, EBTC, HX, IPSO, MIMO, Neural networks, OIF, PID, Particle swarm optimization, Prediction, RBF, SISO, TITO, WBTC

Li Jinyang; Meng Xiaofeng

2013-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "forced air system" 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

Vehicle cabin cooling system for capturing and exhausting heated boundary layer air from inner surfaces of solar heated windows  

DOE Patents (OSTI)

The cabin cooling system includes a cooling duct positioned proximate and above upper edges of one or more windows of a vehicle to exhaust hot air as the air is heated by inner surfaces of the windows and forms thin boundary layers of heated air adjacent the heated windows. The cabin cooling system includes at least one fan to draw the hot air into the cooling duct at a flow rate that captures the hot air in the boundary layer without capturing a significant portion of the cooler cabin interior air and to discharge the hot air at a point outside the vehicle cabin, such as the vehicle trunk. In a preferred embodiment, the cooling duct has a cross-sectional area that gradually increases from a distal point to a proximal point to the fan inlet to develop a substantially uniform pressure drop along the length of the cooling duct. Correspondingly, this cross-sectional configuration develops a uniform suction pressure and uniform flow rate at the upper edge of the window to capture the hot air in the boundary layer adjacent each window.

Farrington, Robert B. (Golden, CO); Anderson, Ren (Broomfield, CO)

2001-01-01T23:59:59.000Z

422

Program on Technology Innovation: Adiabatic Compressed Air Energy Storage Systems for Renewable Energy Integration  

Science Conference Proceedings (OSTI)

This report summarizes the status and progress of the research, development, and demonstration (RD&D) work at the Electric Power Research Institute (EPRI) on adiabatic no-fuel compressed air energy storage (CAES) for wind integration. Bulk energy storage (BES) is necessary to provide grid damping in order to mitigate wind power variability. The objective of adiabatic no-fuel CAES RD&D is to combine the lowest-cost BES option (which is CAES) with carbon-free operation. The research focuses on system desig...

2010-11-08T23:59:59.000Z

423

A prototype system for detecting the radio-frequency pulse associated with cosmic ray air showers  

E-Print Network (OSTI)

The development of a system to detect the radio-frequency (RF) pulse associated with extensive air showers of cosmic rays is described. This work was performed at the CASA/MIA array in Utah, with the intention of designing equipment that can be used in conjunction with the Auger Giant Array. A small subset of data (less than 40 out of a total of 600 hours of running time), taken under low-noise conditions, permitted upper limits to be placed on the rate for pulses accompanying showers of energies around $10^{17}$ eV.

Kevin Green; Jonathan L. Rosner; Denis A. Suprun; J. F. Wilkerson

2002-05-03T23:59:59.000Z

424

Solutions for Summer Electric Power Shortages: Demand Response andits Applications in Air Conditioning and Refrigerating Systems  

SciTech Connect

Demand response (DR) is an effective tool which resolves inconsistencies between electric power supply and demand. It further provides a reliable and credible resource that ensures stable and economical operation of the power grid. This paper introduces systematic definitions for DR and demand side management, along with operational differences between these two methods. A classification is provided for DR programs, and various DR strategies are provided for application in air conditioning and refrigerating systems. The reliability of DR is demonstrated through discussion of successful overseas examples. Finally, suggestions as to the implementation of demand response in China are provided.

Han, Junqiao; Piette, Mary Ann

2007-11-30T23:59:59.000Z

425

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

426

Air Distribution and Microenvironment Evaluation of a Desktop Task Conditioning System  

E-Print Network (OSTI)

Task conditioning aims to provide each occupant with personalized clean air direct to the breathing zone. The microenvironment of a typical office workplace, consisting of two desktop task conditioning systems (a Horizontal Desk Grill (HDG) and Vertical Desk Grill (VDG)) were studied by numerical simulation. Numerical simulation by k- 3-D turbulent flow was separately conducted to study the influence of supply velocity on the microenvironment of these two desktop task conditioning systems. Three task conditioning velocities were studied. Temperature and velocity distribution, Draught Rating (DR) and Predicted Percentage of Dissatisfied (PPD) of the room and workstation were applied to study the performance of task air conditioning. Results show that the performances of HDG and VDG are almost the same. Results also show that task conditioning can provide excellent working environment when supply velocity is well designed. The supply velocity of task conditioning can be set between 0.8-1.0 m/s. However, task conditioning may cause draught, and engineers should seriously consider this problem. The results can provide important references for design and optimization of the task conditioning system.

Zheng, G.

2006-01-01T23:59:59.000Z

427

Integrated modeling and control of a load-connected SOFC-GT autonomous power system  

E-Print Network (OSTI)

Propulsion Directorate Air Force Research Laboratory Solid Oxide Fuel Cells (SOFC) as Military APU are developing SOFCs emphasizing core technology, system reliability, and affordability ­ Goals ­ Long life (40,000's of hours DOE Stationary System #12;3Jan 2010 Army Air ForceNavy USAF SOFC Systems for Aviation

Foss, Bjarne A.

428

Fuzzy expert system design for operating room air-condition control systems  

Science Conference Proceedings (OSTI)

In this study, a controlled fuzzy expert system (FES) was designed to provide the conditions necessary for operating rooms. For this purpose, existing operating rooms have been studied to see if there are more useful, reliable and comfortable ones. How ... Keywords: Adaptive fuzzy control, Expert systems, Fuzzy control systems, Operating room control

Nazmi Etik; Novruz Allahverdi; Ibrahim Unal Sert; Ismail Saritas

2009-08-01T23:59:59.000Z

429

Development of a model to calculate mechanical specific energy for air hammer drilling systems  

E-Print Network (OSTI)

Drilling for hydrocarbons is an expensive operation; consequently operators try to save costs by reducing the number of days spent during this operation. Drilling efficiently with the highest attainable rate of penetration is one of the ways drilling time could be reduced. Real-time monitoring of Mechanical Specific Energy will enable drilling engineers to detect when the optimum drilling rate for a given set of drilling parameters is not being achieved. Numerous works have been done on air hammers and rock Mechanical Specific Energy. Previous research has shown that Mechanical Specific Energy, which is a ratio that quantifies the input energy and Rate of Penetration (ROP) of a drilling system, is directly proportional to the rock compressive strength being drilled. The Mechanical Specific Energy model utilizes drilling parameters such as ROP, Weight on bit (WOB), RPM, torque, flow-rate, bottom-hole pressure, and bottom-hole temperature to show how effectively energy being put into the drill string is being converted to ROP at the bit. This research effort proposes a new model to calculate the Mechanical Specific Energy for air hammer drilling systems. A thermodynamic model for the air hammer from which the piston impact velocity and kinetic energy is obtained is presented. To be able to estimate the effective energy delivered to the rock by the hammer, the stress wave propagation model is used and factored into the Mechanical Specific Energy model. The Mechanical Specific Energy values obtained from the application of this model provide a qualitative indicator of formation pressure changes and a means for drilling engineers to detect when optimum drilling rate is not being achieved. It can be deduced from the model that the impact energy of the hammer is greatly affected by the pressure drop across the hammer and since the hammer accounts for about sixty percent of the energy required for destroying the rock, the ROP can be varied by varying the pressure drop across the hammer.

Okuchaba, Boma Jeremiah

2008-05-01T23:59:59.000Z

430

Energy Comparison Between Conventional and Chilled Water Thermal Storage Air Conditioning Systems  

E-Print Network (OSTI)

During the summer of previous years, Kuwait faced a series of power shortages emphasizing the need for urgent commissioning of power generation projects. It is estimated that the demand for electricity is growing at an average of 6.2% per year, encouraged by government subsidies and driven by the rapid and continual expansion in building construction, urban development, and the heavy reliance on Air Conditioning (AC) systems for the cooling of buildings. The Chilled Water Thermal Storage (CWTS) system is one of the available techniques that can be utilized to reduce peak electricity demand of buildings when national electricity consumption is at its highest level. This paper demonstrates that the use of CWTS system reduces the peak power demand and energy consumption of AC systems for design day conditions by 36.7% - 87.5% and 5.4% - 7.2%, respectively. This reduction depends on selected operating strategies as compared with conventional AC system. Furthermore, results show that the annual energy consumption of CWTS systems decreases by between 4.5% and 6.9% compared with conventional systems, where chillers and pumps significantly contribute to this reduction.

Sebzali, M.; Hussain, H. J.; Ameer, B.

2010-01-01T23:59:59.000Z

431

Technical and economic assessment of fluidized bed augmented compressed air energy storage system. Volume III. Preconceptual design  

DOE Green Energy (OSTI)

A technical and economic assessment of fluidized bed combustion augmented compressed air energy storage systems is presented. The results of this assessment effort are presented in three volumes. Volume III - Preconceptual Design contains the system analysis which led to the identification of a preferred component configuration for a fluidized bed combustion augmented compressed air energy storage system, the results of the effort which transformed the preferred configuration into preconceptual power plant design, and an introductory evaluation of the performance of the power plant system during part-load operation and while load following.

Giramonti, A.J.; Lessard, R.D.; Merrick, D.; Hobson, M.J.

1981-09-01T23:59:59.000Z

432

Technical and economic assessment of fluidized-bed-augmented compressed-air energy-storage system: system load following capability  

DOE Green Energy (OSTI)

The load-following capability of fluidized bed combustion-augmented compressed air energy storage systems was evaluated. The results are presented in two parts. The first part is an Executive Summary which provides a concise overview of all major elements of the study including the conclusions, and, second, a detailed technical report describing the part-load and load following capability of both the pressurized fluid bed combustor and the entire pressurized fluid bed combustor/compressed air energy storage system. The specific tasks in this investigation were to: define the steady-state, part-load operation of the CAES open-bed PFBC; estimate the steady-state, part-load performance of the PFBC/CAES system and evaluate any possible operational constraints; simulate the performance of the PFBC/CAES system during transient operation and assess the load following capability of the system; and establish a start-up procedure for the open-bed PFBC and evaluate the impact of this procedure. The conclusions are encouraging and indicate that the open-bed PFBC/CAES power plant should provide good part-load and transient performance, and should have no major equipment-related constraints, specifically, no major problems associated with the performance or design of either the open-end PFBC or the PFBC/CAES power plant in steady-state, part-load operation are envisioned. The open-bed PFBC/CAES power plant would have a load following capability which would be responsive to electric utility requirements for a peak-load power plant. The open-bed PFBC could be brought to full operating conditions within 15 min after routine shutdown, by employing a hot-start mode of operation. The PFBC/CAES system would be capable of rapid changes in output power (12% of design load per minute) over a wide output power range (25% to 100% of design output). (LCL)

Lessard, R.D.; Blecher, W.A.; Merrick, D.

1981-09-01T23:59:59.000Z

433

Distribution of small dispersive coal dust particles and absorbed radioactive chemical elements in conditions of forced acoustic resonance in iodine air filter at nuclear power plant  

E-Print Network (OSTI)

The physical features of distribution of the small dispersive coal dust particles and the adsorbed radioactive chemical elements and their isotopes in the absorber with the granular filtering medium with the cylindrical coal granules were researched in the case of the intensive air dust aerosol stream flow through the iodine air filter (IAF). It was shown that, at the certain aerodynamic conditions in the IAF, the generation of the acoustic oscillations is possible. It was found that the acoustic oscillations generation results in an appearance of the standing acoustic waves of the air pressure (density) in the IAF. In the case of the intensive blow of the air dust aerosol, it was demonstrated that the standing acoustic waves have some strong influences on both: 1) the dynamics of small dispersive coal dust particles movement and their accumulation in the IAF; 2) the oversaturation of the cylindrical coal granules by the adsorbed radioactive chemical elements and their isotopes in the regions, where the antinodes of the acoustic waves are positioned. Finally, we completed the comparative analysis of the theoretical calculations with the experimental results, obtained for the cases of: 1) the experimental aerodynamic modeling of physical processes of the absorbed radioactive chemical elements and their isotopes distribution in the IAF; and 2) the gamma-activation spectroscopy analysis of the absorbed radioactive chemical elements and their isotopes distribution in the IAF. We made the innovative propositions on the necessary technical modifications with the purpose to improve the IAF technical characteristics and increase its operational time at the nuclear power plant (NPP), going from the completed precise characterization of the IAF parameters at the long term operation.

Oleg P. Ledenyov; Ivan M. Neklyudov

2013-06-14T23:59:59.000Z

434

Integrated Ice Storage/Sprinkler HVAC System Sharply Cuts Energy Costs and Air-Distribution First Costs  

E-Print Network (OSTI)

Integrated ice thermal storage/sprinkler HVAC systems developed and applied by the author in several commercial applications shift a major portion of electric utility demand to cheaper off-peak hours, while also reducing significantly the first cost of distribution ductwork. Savings of up to 80% in primary duct and air handler costs (compared to a traditional all-air HVAC system) partially offset the first cost of ice storage equipment, which in turn permits a 50% reduction in utility energy costs for air conditioning in some facilities. The basic ice storage/sprinkler HVAC system is described as well as optional subsystems, such as cogeneration, that are cost-effective under certain conditions. The system's design parameters, psychrometric process, and thermodynamic characteristics are presented and two installations are described, a 223,000-sq ft shopping center and a 150,000-sq ft, two-story retail store. Reductions in the size and first cost of primary air-handling equipment and ductwork are achieved by distributing a small quantity (0.1 to 0.2 cfm/sq ft) of very dry, 40F primary air. All dehumidification is handled by the ice-chilled primary air, which is distributed in variable, volume, determined by the space dehumidification requirement, to fan-coil induction terminal units. The primary air is mixed with fan-induced room air in the terminals prior to distribution to the space at a constant volume. The fan-induction terminals contain cooling coils connected to the integrated sprinkler system, which circulates chilled water from the central plant through the coils when additional sensible cooling is required. This chilled water is at a thermodynamically efficient elevated temperature (58-68F), since it handles sensible cooling load only.

Meckler, G.

1986-01-01T23:59:59.000Z

435

Introducing a Partitioning Mechanism for PAHs into the Community Multiscale Air Quality Modeling System and Its Application to Simulating the Transport of Benzo(a)pyrene over Europe  

Science Conference Proceedings (OSTI)

Into the Community Multiscale Air Quality modeling system (CMAQ) that is widely used for simulating the transport and fate of air pollutants, a new module was inserted that accounts for the partitioning of semivolatile organic compoundsin ...

Armin Aulinger; Volker Matthias; Markus Quante

2007-11-01T23:59:59.000Z

436

Thermal decay in underfloor air distribution (UFAD) systems: Fundamentals and influence on system performance  

E-Print Network (OSTI)

Inc. , 2004. ASHRAE Fundamentals Handbook, Chapter 14,distribution (UFAD) systems: Fundamentals and influence onwas used to explain the fundamentals of thermal decay, to

Lee, Kwang Ho; Schiavon, Stefano; Bauman, Fred; Webster, Tom

2012-01-01T23:59:59.000Z

437

Measure Guideline: Implementing a Plenum Truss for a Compact Air Distribution System  

SciTech Connect

This Measure Guideline presents the steps to implement a compact duct system inside an attic bulkhead (plenum truss) of a one-story, slab-on-grade (SOG) home. In a compact duct design, ductwork runs are reduced in length to yield a smaller and more compact duct system. Less energy will be lost through ductwork if the ducts are contained within the thermal enclosure of the house. These measures are intended for the production builder working to meet the 2012 International Energy Conservation Code (IECC) requirements and keep the ductwork within the thermal enclosure of the house. This measure of bringing the heating, ventilation and air conditioning (HVAC) equipment and ductwork within the thermal enclosure of the house is appropriate for the builder wishing to avoid cathedralizing the insulation in the attic space (i.e., locating it at the underside of the roof deck rather than along the attic floor) or adding dropped soffits.

Burdick, A.

2013-10-01T23:59:59.000Z

438

Commissioning Tools for Heating/Cooling System in Residence - Verification of Floor Heating System and Room Air Conditioning System Performance  

E-Print Network (OSTI)

Tools of evaluating the performance of floor heating and room air conditioner are examined as a commissioning tool. Simple method is needed to check these performance while in use by residents, because evaluation currently requires significant time and effort. Therefore, this paper proposes a) two methods of evaluating the floor heating efficiency from the room / crawl space temperature and the energy consumption and b) method of evaluating COP of the room air conditioner from the data measured at the external unit. Case studies in which these tools were applied to actual residences are presented to demonstrate their effectiveness.

Miura, H.; Hokoi, S.; Iwamae, A.; Umeno, T.; Kondo, S.

2004-01-01T23:59:59.000Z

439

Candidate chemical systems for air cooled, solar powered, absorption air conditioner design. Part II. Solid absorbents, high latent heat refrigerants  

DOE Green Energy (OSTI)

Work done in attempting to qualify absorption refrigeration systems based on refrigerants with intermediate latent heats of vaporization is summarized. In practice, these comprise methanol, ammonia, and methylamine. A wide variety of organic substances, salts, and mixtures were evaluated in as systematic a manner as possible. Several systems of interest are described. The system, LiClO/sub 3/--LiBr--H/sub 2/O, is a good back up system to our first choice of an antifreeze additive system, and thermodynamically promising but subject to some inconvenient materials limitations. The system, LiBr/ZnBr/sub 2/--methanol, is thermodynamically promising but requires additional kinetic qualification. Chemical stability of the system, LiCNS--ammonia/methylamine with various other third components, does not appear to be adequate for a long-lived system.

Biermann, W. J.

1978-04-01T23:59:59.000Z

440

Compensation of Wave-Induced Motion and Force Phenomena for Ship-Based High Performance Robotic and Human Amplifying Systems  

SciTech Connect

The decrease in manpower and increase in material handling needs on many Naval vessels provides the motivation to explore the modeling and control of Naval robotic and robotic assistive devices. This report addresses the design, modeling, control and analysis of position and force controlled robotic systems operating on the deck of a moving ship. First we provide background information that quantifies the motion of the ship, both in terms of frequency and amplitude. We then formulate the motion of the ship in terms of homogeneous transforms. This transformation provides a link between the motion of the ship and the base of a manipulator. We model the kinematics of a manipulator as a serial extension of the ship motion. We then show how to use these transforms to formulate the kinetic and potential energy of a general, multi-degree of freedom manipulator moving on a ship. As a demonstration, we consider two examples: a one degree-of-freedom system experiencing three sea states operating in a plane to verify the methodology and a 3 degree of freedom system experiencing all six degrees of ship motion to illustrate the ease of computation and complexity of the solution. The first series of simulations explore the impact wave motion has on tracking performance of a position controlled robot. We provide a preliminary comparison between conventional linear control and Repetitive Learning Control (RLC) and show how fixed time delay RLC breaks down due to the varying nature wave disturbance frequency. Next, we explore the impact wave motion disturbances have on Human Amplification Technology (HAT). We begin with a description of the traditional HAT control methodology. Simulations show that the motion of the base of the robot, due to ship motion, generates disturbances forces reflected to the operator that significantly degrade the positioning accuracy and resolution at higher sea states. As with position-controlled manipulators, augmenting the control with a Repetitive Learning Controller has little impact due to the variable nature of the wave period. We then introduce a new approach to HAT control, Ship Motion Compensation for Force Control Systems (SMCFCS). This basic approach uses inclinometer and acceleration information from the base of the robot to compensate for ship motion disturbances. Results of the simulation study show over an order of magnitude decrease in the disturbance force reflected back to the operator and an order of magnitude increase in positioning accuracy and resolution.

Love, LJL

2003-09-24T23:59:59.000Z

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441

Weak dispersive forces between glass-gold macroscopic surfaces in alcohols  

E-Print Network (OSTI)

In this work we concentrate on an experimental validation of the Lifshitz theory for van der Waals and Casimir forces in gold-alcohol-glass systems. From this theory weak dispersive forces are predicted when the dielectric properties of the intervening medium become comparable to one of the interacting surfaces. Using inverse colloid probe atomic force microscopy dispersive forces were measured occasionally and under controlled conditions by addition of salt to screen the electrostatic double layer force if present. The dispersive force was found to be attractive, and an order of magnitude weaker than that in air. Although the theoretical description of the forces becomes less precise for these systems even with full knowledge of the dielectric properties, we find still our results in reasonable agreement with Lifshitz theory.

P. J. van Zwol; G. Palasantzas; J. Th. M. DeHosson

2009-04-03T23:59:59.000Z

442

The Mesoscale Forcing of a Midlatitude Upper-Tropospheric Jet Streak by a Simulated Convective System. Part II: Kinetic Energy and Resolution Analysis  

Science Conference Proceedings (OSTI)

A kinetic energy (KE) analysis of the forcing of a mesoscale upper-tropospheric jet streak by organized diabaaic processes within the simulated convective system (SCS) that was discussed in Part I is presented in this study. The relative ...

Bart J. Wolf; Donald R. Johnson

1995-04-01T23:59:59.000Z

443

Smart Operations of Air-Conditioning and Lighting Systems in Government Buildings for Peak Power Reduction  

E-Print Network (OSTI)

During the summer 2007 smart operation strategies for air-conditioning (A/C) and lighting systems were developed and tested in a number of governmental buildings in Kuwait as one of the solutions to reduce the national peak demand for electrical power that commonly occur around 15:00 h. The working hours for these building are generally between 07:00 and 14:00 h and their peak demand exceeds 600 MW. The smart operation strategies implemented in these buildings included pre-closing treatment (PCT) between 13:00 and 14:00 h and time-of-day control (TDC) after 14:00 h. Also de-lamping was carried out in some of the buildings to readjust the higher than recommended illumination levels. This paper presents the achievements of implementing these smart operations strategies in Justice Palace Complex (JPC) as a case study. The peak load of this building was 3700 kW. The achievements are summarized as an all time saving of 22 kW by de-lamping, an additional saving of 27 kW through TDC of lighting, direct savings between 13:00 and 22:00 h by closing supply and return air fans of 52 air-handling units with a connected load 400 kW, and an additional saving of 550 kW during the same period by optimizing the cooling production and distribution. In conclusion project achieved an overall reduction in power demand of around 20% between 13:00 to 17:00 h and reduction ranging from 7% to 15% between 17:00 to 20:00 h.

Al-Hadban, Y.; Maheshwari, G. P.; Al-Nakib, D.; Al-Mulla, A.; Alasseri, R.

2008-10-01T23:59:59.000Z

444

Dynamic Response of a Rotor-air Bearing System Due to Base Induced Periodic Motions  

E-Print Network (OSTI)

Oil-free microturbomachinery (MTM) are inevitably subjected to base or foundation excitations: multiple periodic load excitations from internal combustion (IC) engines in turbochargers, for example. Too large base excitations can produce severe damage, even failure, due to hard collision or rubbing contact between a rotor and its bearings. Therefore, it is paramount to evaluate the reliability of rotor-air bearing systems to withstanding base load excitations. In 2008, intermittent shock excitations, up to 30 g (pk-pk), were introduced to a test rig consisting of a rotor (0.825 kg) supported on two hybrid flexure pivot tilting pad gas bearings (FPTPBs). The experiments demonstrated the reliability of the gas bearings to withstanding external transient load excitations. Presently, a shaker delivers periodic load excitations to the base plate supporting the test rig. The whole system, weighing 48 kg, is supported on two soft coil springs and its lowest natural frequency is ~5 Hz. The rod connecting the shaker to the base plate is not affixed rigidly to the test rig base. The rod merely pushes on the base plate and hence the induced based motions are intermittent with multiple impacts and frequencies. As with most practical conditions, the base motion frequencies (5-12 Hz) are low respective to the operating speed of the rotor-bearing system. Rotor speed coast down tests evidence the rotor-bearing system natural frequency when the gas bearings are supplied with feed pressures increasing from 2.36 to 5.08 bar (ab). Shaker excitation induced rotor response, relative to the bearing housings, contains the main input frequency (5-12 Hz) and its super harmonics; and because of the intermittency of the base motions, it also excites the rotor-bearing system natural frequency, with smaller motion amplitudes than synchronous motion components. The excitation of the system natural frequency does not mean rotordynamic instability. With base induced motions, the rotor motion amplitude at the system natural frequency increases as the gas bearing feed pressure decreases, as the rotor speed increases, and as the shaker input excitation frequency increases (5-12 Hz). Hence, the test rotor-air bearing system is highly sensitive to base motions, intermittent in character, in particular when the gas bearings are supplied with a low feed pressure. Predicted rotor motion responses obtained from XLTRC2 and an analytical rigid rotor model, both including the (measured) periodic base motions, show good correlation with the measurements. The research results demonstrate further the applicability of gas bearings into oil-free high speed MTM.

Niu, Yaying

2009-08-01T23:59:59.000Z

445

Improving Energy Efficiency of Compressed Air System Based on System Audit  

E-Print Network (OSTI)

be a significant source of wasted energy in an industrialto being a source of wasted energy and money, leaks can alsofor about 3.2% of system energy wasted. Figure 5 Excessive

Shanghai, Hongbo Qin; McKane, Aimee

2008-01-01T23:59:59.000Z

446

An Airborne Laser Air Motion Sensing System. Part I: Concept and Preliminary Experiment  

Science Conference Proceedings (OSTI)

Measurement of air motion relative to an aircraft by a conically scanned optical Doppler technique has advantages over measurements with conventional gust probes for many applications. Advantages of the laser air motion sensing technique ...

R. J. Keeler; R. J. Serafin; R. L. Schwiesow; D. H. Lenschow; J. M. Vaughan; A. A. Woodfield

1987-03-01T23:59:59.000Z

447

Duct Systems in large commercial buildings: Physical characterization, air leakage, and heat conduction gains  

E-Print Network (OSTI)

Air Leakage, and Heat Conduction Gains William 1. Fisk,0.75 to 0.90; thus, heat conduction decreased the coolingby air leakage or heat conduction, because these ducts are

Fisk, W.J.

2011-01-01T23:59:59.000Z

448

ASE/CAGI Meeting about Compressors and Compressed Air System Efficiency  

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

On April 25, 2013, several representatives of energy efficiency advocacy organizations met with staff and members of the Compressed Air and Gas Institute (CAGI) along with some compressed air...

449

Analysis of a Radome Air-Motion System on a Twin-Jet Aircraft for Boundary-Layer Research  

Science Conference Proceedings (OSTI)

A radome gust probe system was installed on a twin-jet aircraft for the purpose of boundary-layer research. This system provided a useful relatively low-cost method for air motion and turbulence measurements on an aircraft already equipped with ...

Michael Tjernstrm; Carl A. Friehe

1991-02-01T23:59:59.000Z

450

Abstract--A novel compressed air energy storage system for wind turbine is proposed. It captures excess power prior to  

E-Print Network (OSTI)

Abstract-- A novel compressed air energy storage system for wind turbine is proposed. It captures of simulation case studies demonstrate the operation of the system. I. INTRODUCTION enewable energy such as wind and solar energy are clean and available as long as the wind blows or sun shines. Two main disadvantages

Li, Perry Y.

451

Pacific Gas and Electric Company's Compressed Air Management Program: A Performance Assessment Approach to Improving Industrial Compressed Air System Operation and Maintenance  

E-Print Network (OSTI)

The Compressed Air Management Program (CAMP) provides Pacific Gas and Electric's (PG&E's) large industrial customers with measurement-based performance assessments of their compressed air systems. Under this program, the customer's system is inspected and both short-term, high resolution, and longer-term measurements are taken of power and pressure. These data are used in developing a system simulation based on the US DOE's AIRMaster+ computer model. Model results and professional judgment are used to identify a cost-effective strategy for improving the system. Recommendations are provided to the customer along with technical support for implementing these recommendations. After improvements are complete, the performance measurements are repeated so that PG&E and its customers can judge the effectiveness of the recommendations. The program uses a standardized toolkit (all off-the-shelf components) along with software developed exclusively for this application, to accomplish the required measurements and efficiently analyze and reduce the data for use in the AIRMaster+ model.

Qualmann, R. L.; Zeller, W.; Baker, M.

2002-04-01T23:59:59.000Z

452

Nuclear forces  

Science Conference Proceedings (OSTI)

These lectures present an introduction into the theory of nuclear forces. We focus mainly on the modern approach

2013-01-01T23:59:59.000Z

453

Modelica Library for Building Heating, Ventilation and Air-Conditioning Systems  

DOE Green Energy (OSTI)

This paper presents a freely available Modelica library for building heating, ventilation and air conditioning systems. The library is based on the Modelica.Fluid library. It has been developed to support research and development of integrated building energy and control systems. The primary applications are controls design, energy analysis and model-based operation. The library contains dynamic and steady-state component models that are applicable for analyzing fast transients when designing control algorithms and for conducting annual simulations when assessing energy performance. For most models, dimensional analysis is used to compute the performance for operating points that differ from nominal conditions. This allows parameterizing models in the absence of detailed geometrical information which is often impractical to obtain during the conceptual design phase of building systems. In the first part of this paper, the library architecture and the main classes are described. In the second part, an example is presented in which we implemented a model of a hydronic heating system with thermostatic radiator valves and thermal energy storage.

Wetter, Michael

2009-06-17T23:59:59.000Z

454

Evaluation of mixing downstream of tees in duct systems with respect to single point representative air sampling  

E-Print Network (OSTI)

Air duct systems in nuclear facilities must meet the requirements of ANSI N13.1-1999 and the Environmental Protection Agency (EPA) that the exhaust airflow be monitored with continuous sampling in case of an accidental release of airborne radionuclides. The continuous air sampling in a duct system is based on the concept of single point representative sampling at the sampling location where the velocity and contaminant profiles are nearly uniform. Sampling must be at a location where there is a uniform distribution via mixing in accordance with ANSI N13.1-1999. The purpose of this work is to identify the sampling locations where the velocity, momentum and contaminant concentrations fall below the 20% coefficient of variation (COV) requirements of ANSI N13.1-1999. Four sets of experiments were conducted on a generic 'T' mixing system. Measurements were made of the velocity, tracer gas concentration, ten micrometer particles and average flow swirl angle. The generic 'T' mixing system included three different combinations of sub duct sizes (6"x6", 9"x9" and 12"x12"), one main duct size (12"x12") and five air velocities (0, 100, 200, 300, and 400 fpm). An air blender was also introduced in some of the tests to promote mixing of the air streams from the main duct and sub duct. The experimental results suggested a turbulent mixing provided the accepted velocity COVs by 6 hydraulic diameters downstream. For similar velocity in the main duct and sub duct, an air blender provided the substantial improvement in 3 hydraulic diameters needed to achieve COVs below 10%. Without an air blender, the distance downstream of the T-junction for the COVs below 20% increased as the velocity of the sub duct airflow increased. About 95% of the cases achieved COVs below 10%. With the air blender, most of the cases with the air blender had the lower COVs than without the blender. However, at an area ratio (sub duct area / main duct area) of 0.25 and above a velocity ratio (velocity in the sub duct / velocity in the main duct) of 3, the air blender proved to be less beneficial for mixing. These results can apply to other duct systems with similar geometries and, ultimately, be a basis for selecting a proper sampling location under the requirements of the single point representative sampling.

Kim, Taehong