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Note: This page contains sample records for the topic "hvac systems volume" 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.


1

Renovating Residential HVAC Systems HVAC Systems  

E-Print Network (OSTI)

- 1 - LBNL 57406 Renovating Residential HVAC Systems HVAC Systems J.A. McWilliams and I.S. Walker and Air Conditioning), and Stacy Hunt and Ananda Harzell (IBACOS). #12;- 3 - Renovating Residential HVAC Guideline for Residential HVAC Retrofits (http

2

An implementation of co-simulation for performance prediction of innovative integrated HVAC systems in buildings  

E-Print Network (OSTI)

and Judkoff, R. 2002. IEA HVAC BESTEST volume 1, Technicaland Judkoff, R. 2004. IEA HVAC BESTEST volume 2, TechnicalOF INNOVATIVE INTEGRATED HVAC SYSTEMS IN BUILDINGS Marija

Trcka, Marija

2010-01-01T23:59:59.000Z

3

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

4

Multiple sensors with single HVAC system control  

E-Print Network (OSTI)

sensor; HVAC; control system; optimization; multi channeloptimization method is designed to be independent of the HVAC

Lin, Craig; Federspiel, Clifford; Auslander, David

2002-01-01T23:59:59.000Z

5

MAPPING HVAC SYSTEMS FOR SIMULATION IN ENERGYPLUS  

E-Print Network (OSTI)

LBNL-XXXXX MAPPING HVAC SYSTEMS FOR SIMULATION IN ENERGYPLUSof California. MAPPING HVAC SYSTEMS FOR SIMULATION INpresent a conventional view of HVAC systems to the user, and

Basarkar, Mangesh

2013-01-01T23:59:59.000Z

6

Measuring Advances in HVAC Distribution System Design  

E-Print Network (OSTI)

Gabel and Andresen, HVAC Secondary Toolkil. Atlanta: ASHRAE,P_02 Measuring Advances in HVAC Distribution System Designdesign and operation of the HVAC thermal distribution system

Franconi, E.

2011-01-01T23:59:59.000Z

7

Wireless Demand Response Controls for HVAC Systems  

E-Print Network (OSTI)

Response Controls for HVAC Systems Clifford Federspiel,tests. Figure 5: Specific HVAC electric power consumptioncontrol, demand response, HVAC, wireless Executive Summary

Federspiel, Clifford

2010-01-01T23:59:59.000Z

8

Co-simulation of innovative integrated HVAC systems in buildings  

E-Print Network (OSTI)

Integrated Simulation for HVAC Per- formance Prediction:air-conditioning equipment models (HVAC BESTEST), volume 1:air-conditioning equipment models (HVAC BESTEST), volume 2:

Trcka, Marija

2010-01-01T23:59:59.000Z

9

Measuring Outdoor Airflow into HVAC Systems  

E-Print Network (OSTI)

MEASURING OUTDOOR AIRFLOW INTO HVAC SYSTEMS W i l l i a m J.minimum OA flow rate if HVAC system has an economizer

Fisk, William J.; Faulkner, David; Sullivan, Douglas P.

2005-01-01T23:59:59.000Z

10

VOLUME 11, NUMBER 2 HVAC&R RESEARCH APRIL 2005 An Optimization-Based Approach for  

E-Print Network (OSTI)

VOLUME 11, NUMBER 2 HVAC&R RESEARCH APRIL 2005 215 An Optimization-Based Approach for Facility formulation and the correspond- ing solution methodology for HVAC systems. The problem is to minimize the energy and demand costs through control of HVAC units while satisfying human comfort, system dynamics

Luh, Peter

11

VOLUME 16, NUMBER 3 HVAC&R RESEARCH MAY 2010 The Effects of Filtration on  

E-Print Network (OSTI)

VOLUME 16, NUMBER 3 HVAC&R RESEARCH MAY 2010 273 The Effects of Filtration on Pressure Drop and Energy Consumption in Residential HVAC Systems (RP-1299) Brent Stephens Atila Novoselac, PhD Jeffrey A of high-efficiency HVAC filters is a common strategy to control exposure to airborne particulate matter

Siegel, Jeffrey

12

Porous insulation in HVAC systems  

Science Conference Proceedings (OSTI)

Porous insulation used to line the air stream surfaces of HVAC equipment provides a locus for the accumulation of dirt and debris. Dirt and debris are hydrophilic and the insulation on the air stream surfaces of mechanical cooling systems thus provides a niche for mold growth. The mold growing on porous insulation unlike moldy debris on a hard surface such as sheetmetal cannot be removed by duct cleaning. Actions for proactively preventing biocontamination of HVAC insulation include the following. (1) Porous insulation shall not be used to line the air stream surfaces of HVAC plenums where wetting is likely such as in the vicinity of cooling coils

Philip R. Morey

1995-01-01T23:59:59.000Z

13

Modeling and Measurement Constraints in Fault Diagnostics for HVAC Systems  

E-Print Network (OSTI)

in Fault Diagnostics for HVAC Systems Massieh Najafi 1 ,tools for determining HVAC diagnostics, methods todetect faults in HVAC systems are still generally

Najafi, Massieh

2010-01-01T23:59:59.000Z

14

Fault Detection and Diagnosis in Building HVAC Systems  

E-Print Network (OSTI)

Wright, “Condition monitoring in HVAC subsystems using firstmonitoring packaged HVAC equipment. ASHRAE Transactions”,Detection and Diagnosis of HVAC Systems Using Support Vector

Najafi, Massieh

2010-01-01T23:59:59.000Z

15

CALIFORNIA ENERGY Small HVAC System Design Guide  

E-Print Network (OSTI)

CALIFORNIA ENERGY COMMISSION Small HVAC System Design Guide DESIGNGUIDELINES October 2003 500;#12;Small HVAC System Design Guide Acknowledgements i Acknowledgements The products and outcomes presented; Darren Goody, PECI, Design Guide review. #12;Small HVAC System Design Guide Preface ii Preface The Small

16

SIMULATION OF RESIDENTIAL HVAC SYSTEM PERFORMANCE  

E-Print Network (OSTI)

1 LBNL-47622 SIMULATION OF RESIDENTIAL HVAC SYSTEM PERFORMANCE Walker, I., Siegel, J ..................................................... 9 #12;3 ABSTRACT In many parts of North America residential HVAC systems are installed outside of the simulations is that they are dynamic - which accounts for cyclic losses from the HVAC system and the effect

17

Energirigtige pumpekoblinger i HVAC-systemer  

E-Print Network (OSTI)

Energirigtige pumpekoblinger i HVAC-systemer PSO 2003 - FORSKNING & UDVIKLING I EFFEKTIV energieffektive HVAC-aggregater #12;InformationomProjektnr.:335-021 PROCESSEN: Projektet er gennemført af en reguleringsprincipper, mens Exhausto har leveret HVAC-aggregat og knowhow inden for klimasystemer. Grundfos

18

Optimized Fan Control In Variable Air Volume HVAC Systems Using Static Pressure Resets: Strategy Selection and Savings Analysis  

E-Print Network (OSTI)

The potential of static pressure reset (SPR) control to save fan energy in variable air volume HVAC systems has been well documented. Current research has focused on the creation of reset strategies depending on specific system features. As the commissioning process has begun to require the prediction of savings, knowledge of the extent to which various SPR control strategies impact fan energy has become increasingly important. This research aims to document existing SPR control strategies and utilize building data and simulation to estimate fan energy use. A comprehensive review of the literature pertaining to SPR control was performed and the results were organized into a top-down flow chart tool. Based on the type of feedback available from a particular system, or lack thereof, this tool will facilitate the selection of a SPR control strategy. A field experiment was conducted on a single duct variable air volume system with fixed discharge air temperature and static pressure setpoints. Finally, an air-side model of the experimental system was created using detailed building design information and calibrated using field measurements. This model was used to estimate the fan energy required to supply the trended airflow data using fixed static pressure (FSP) and SPR control based on zone demand, system demand, and outside air temperature. While utilizing trend data from November 1, 2008 to February 12, 2009, the FSP control of the experimental system was used as the baseline for ranking the energy savings potential of nine different forms of duct static pressure control. The highest savings (73-74%) were achieved using zonal demand based SPR control. System demand based SPR control yielded savings ranging from 59 to 76%, which increased when the duct sensor was positioned near the fan discharge and under similar zone load conditions. The outside air temperature based SPR control yielded savings of 65% since the experimental system supplied primarily perimeter zones. Finally, increasing the FSP setpoint from 2 to 3 inWG increased fan energy by 45%, while decreasing the setpoint from 2 to 1 inWG decreased fan energy by 41%.

Kimla, John

2009-12-01T23:59:59.000Z

19

Modeling and Identification for HVAC Systems.  

E-Print Network (OSTI)

??Heating, Ventilation and Air Conditioning (HVAC) systems consist of all the equipment that control the conditions and distribution of indoor air. Indoor air must be… (more)

Scotton, Francesco

2012-01-01T23:59:59.000Z

20

Measuring rates of outdoor airflow into HVAC systems  

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

Measuring rates of outdoor airflow into HVAC systems Title Measuring rates of outdoor airflow into HVAC systems Publication Type Journal Article LBNL Report Number LBNL-51583 Year...

Note: This page contains sample records for the topic "hvac systems volume" 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

HVAC system study: a data-driven approach.  

E-Print Network (OSTI)

?? The energy consumed by heating, ventilating, and air conditioning (HVAC) systems has increased in the past two decades. Thus, improving efficiency of HVAC systems… (more)

Xu, Guanglin

2012-01-01T23:59:59.000Z

22

Comparison of Building Energy Modeling Programs: HVAC Systems  

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

Modeling Programs: HVAC Systems Title Comparison of Building Energy Modeling Programs: HVAC Systems Publication Type Report LBNL Report Number LBNL-6432E Year of Publication 2013...

23

Home Energy Article: A Systems Approach to Retrofitting Residential HVAC Systems  

E-Print Network (OSTI)

to Retrofitting a Residential HVAC System, Lawrence Berkeleyducts. New downsized ducts and HVAC equipment. The ducts areto Retrofitting Residential HVAC Systems J.A. McWilliams and

McWilliams, Jennifer A.; Walker, Iain S.

2005-01-01T23:59:59.000Z

24

System dynamics based models for selecting HVAC systems for office buildings: a life cycle assessment from carbon emissions perspective.  

E-Print Network (OSTI)

??This study aims to explore the life cycle environmental impacts of typical heating ventilation and air condition (HVAC) systems including variable air volume (VAV) system,… (more)

Chen, S

2011-01-01T23:59:59.000Z

25

Salsbury and Diamond: Automated Testing of HVAC Systems for Commissioning -1 -Automated Testing of HVAC Systems for Commissioning  

E-Print Network (OSTI)

and Diamond: Automated Testing of HVAC Systems for Commissioning - 1 - Automated Testing of HVAC Systems This paper describes an approach to the automation of the commissioning of HVAC systems. The approach of many HVAC systems is limited more by poor installation, commissioning, and maintenance than by poor

26

Case study field evaluation of a systems approach to retrofitting a residential HVAC system  

E-Print Network (OSTI)

Practices for Residential HVAC Systems”. Boston, MA. Jump,techniques for measuring HVAC grille air flows". ASHRAEPractices Guide for Residential HVAC Retrofits. LBNL 53592.

Walker, Iain S.; McWiliams, Jennifer A.; Konopacki, Steven J.

2003-01-01T23:59:59.000Z

27

Measuring advances in HVAC distribution system designs  

Science Conference Proceedings (OSTI)

Substantial commercial building energy savings have been achieved by improving the performance of the HVAC distribution system. The energy savings result from distribution system design improvements, advanced control capabilities, and use of variable-speed motors. Yet, much of the commercial building stock remains equipped with inefficient systems. Contributing to this is the absence of a definition for distribution system efficiency as well as the analysis methods for quantifying performance. This research investigates the application of performance indices to assess design advancements in commercial building thermal distribution systems. The index definitions are based on a first and second law of thermodynamics analysis of the system. The second law or availability analysis enables the determination of the true efficiency of the system. Availability analysis is a convenient way to make system efficiency comparisons since performance is evaluated relative to an ideal process. A TRNSYS simulation model is developed to analyze the performance of two distribution system types, a constant air volume system and a variable air volume system, that serve one floor of a large office building. Performance indices are calculated using the simulation results to compare the performance of the two systems types in several locations. Changes in index values are compared to changes in plant energy, costs, and carbon emissions to explore the ability of the indices to estimate these quantities.

Franconi, Ellen

1998-07-01T23:59:59.000Z

28

Best Practices for Energy Efficient Cleanrooms Efficient HVAC Systems: Variable-Speed-Drive Chillers  

E-Print Network (OSTI)

resource/24/ ASHRAE handbook – HVAC systems and equipments.Efficient Cleanrooms Efficient HVAC Systems: Variable-Speed-Efficient Cleanrooms Efficient HVAC Water Systems: Variable-

Xu, Tengfang

2005-01-01T23:59:59.000Z

29

Model Predictive Control of HVAC Systems: Implementation and Testing at the University of California, Merced  

E-Print Network (OSTI)

Model Predictive Control of HVAC Systems:    Implementation and  air  conditioning  (HVAC)  account  for  27%  of  the reduction potential of HVAC systems with  active thermal 

Haves, Phillip

2010-01-01T23:59:59.000Z

30

A PDI for your HVAC System  

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

8/3/2012 Technical Approach Develop a PDI for HVAC PDI focus is on Inspecting Installation - a $10 Chinese sweatshop t-shirt gets a QA/QC sticker, why not a $10k HVAC system? Develop & require diagnostics that confirm good installations: - Air flow, duct leakage, refrigerant charge, delivered temperatures, system pressures, filter requirements, fan power, noise - On board diagnostics (OBD) for flow, pressures, fan power, charge Make it a warranty requirement, code requirement, permit requirement, etc. Recommended Guidance Develop the PDI checklist and label (include target and system test results) - External Tests: duct leaks - Internal Tests: OBD for system pressures, air flow, charge, fan power - Labels: Certify tight equipment

31

Simulation and Optimization of HVAC Systems  

E-Print Network (OSTI)

We developed a mathematical model of a simple Heating, Ventilation and Air Conditioning (HVAC) system and implemented the model using the VisSim simulation language. We used Fourier methods to approximate (and simplify) temperature and humidity data for the model. We created an objective function to be minimized which recorded the cost of running this HVAC system. We studied different methods for minimizing the cost function, including direct search methods using VisSim and completed preliminary studies of a Dynamic Programming programming approach to simplify the optimization problem. ii Contents 0 Executive Summary 1 1 Introduction 2 2 Evaluation of Simulation Packages 3 3 Simple Room Model for an HVAC System 5 3.1 Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 Room . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.3 Splitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.4 Mixer . . . ....

Ane Coughlin; George D. Ellington; Ellen Phifer; Brian Rieksts

1998-01-01T23:59:59.000Z

32

Improving Indoor Environmental Quality And Energy Performance Of Modular Classroom HVAC Systems  

E-Print Network (OSTI)

Schools (CHPS). 2002. "HVAC Best Practices Manual." CHPSOF MODULAR CLASSROOM HVAC SYSTEMS Michael G. APTE Ph.D. MPHRelocatable Classroom HVAC for Improved IEQ and Energy

Apte, Michael G.; Spears, Michael; Lai, Chi-Ming; Shendell, Derek G.

2005-01-01T23:59:59.000Z

33

Mapping Hvac Systems for Simulation In EnergyPlus  

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

Mapping Hvac Systems for Simulation In EnergyPlus Title Mapping Hvac Systems for Simulation In EnergyPlus Publication Type Conference Paper LBNL Report Number LBNL-5565E Year of...

34

Decentralized nonlinear adaptive control of an HVAC system  

Science Conference Proceedings (OSTI)

This paper presents a new decentralized nonlinear adaptive controller (DNAC) for a heating, ventilating, and air conditioning (HVAC) system capable of maintaining comfortable conditions under varying thermal loads. In this scheme, an HVAC system is considered ...

Zhang Huaguang; Lilong Cai

2002-11-01T23:59:59.000Z

35

Randomized Model Predictive Control for HVAC Systems  

Science Conference Proceedings (OSTI)

Heating, Ventilation and Air Conditioning (HVAC) systems play a fundamental role in maintaining acceptable thermal comfort and Indoor Air Quality (IAQ) levels, essentials for occupants well-being. Since performing this task implies high energy requirements, ... Keywords: Copulas, Learning, Randomized Model Predictive Control, Smart Buildings, Sustainable Control Systems

Alessandra Parisio, Damiano Varagnolo, Daniel Risberg, Giorgio Pattarello, Marco Molinari, Karl H. Johansson

2013-11-01T23:59:59.000Z

36

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

37

Utilizing Passive Ventilation to Complement HVAC Systems in Enclosed Buildings  

E-Print Network (OSTI)

Utilizing Passive Ventilation to Complement HVAC Systems in Enclosed Buildings Tom Rogg REU Student to assist HVAC has the potential to significantly reduce life cycle cost and energy consumption and electrical system that will tie thermostats to controlled valves in the actual HVAC system. Based on results

Mountziaris, T. J.

38

A systems approach to retrofitting residential HVAC systems  

E-Print Network (OSTI)

HVAC System. LBNL 53444. Wendt, R.L. , Ternes, M.P. , O’realized. Other guides (e.g. , Wendt et al. (1997)) are more

McWilliams, J.A.; Walker, I.S.

2004-01-01T23:59:59.000Z

39

Long Range Passive UHF RFID System Using HVAC Ducts  

E-Print Network (OSTI)

INVITED P A P E R Long Range Passive UHF RFID System Using HVAC Ducts To provide a potential communications channel, HVAC ducts can function as electromagnetic waveguides; a 30-m read range has been-conditioning (HVAC) ducts as a potential communication channel between passive ultrahigh-frequency (UHF) radio

Hochberg, Michael

40

Reliability and Functional Availability of HVAC Systems  

E-Print Network (OSTI)

This paper presents a model to calculate the reliability and availability of heating, ventilation and air conditioning systems. The reliability is expressed in the terms of reliability, maintainability and decision capability. These terms are a function of the mean time between failure, mean time to repair and decision time. The availability is expressed as an operational and functional availability of the systems. These terms are a function of both the technical and human characteristics to maintain the systems in correct operational state. The result is based on a large amount data from operational organisations, the compulsory inspection of ventilation systems and momentary and continuous measurements made in HVAC-systems.

Myrefelt, S.

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac systems volume" 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

System Optimization - The Global Approach to HVAC Control  

E-Print Network (OSTI)

System Optimization is a new approach to HVAC control as implemented by Energy Management Control Systems. System Optimization is defined as electronic building control strategies which treat a building's HVAC components as a complete energy-efficient and coordinated system. Trends in the development of HVAC control strategies are briefly discussed. An example which differentiates between conventional and System Optimization approaches is used to illustrate this new approach. The example discusses aspects of cooling season operation for a typical HVAC system. The paper concludes with four basic principles of System Optimization which are essential for effective control of a building environment.

Thielman, D. E.

1984-01-01T23:59:59.000Z

42

Applications of HVAC System Utilizing Building Thermal Mass in Japan  

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

Applications of HVAC System Utilizing Building Thermal Mass in Japan Applications of HVAC System Utilizing Building Thermal Mass in Japan Speaker(s): Katsuhiro Miura Date: January 27, 2012 - 10:00am Location: 90-3122 Seminar Host/Point of Contact: Michael Wetter Buildings have a large thermal capacity and it affects much on building thermal load for the HVAC system. The thermal mass can be utilized also to control the thermal load by storing thermal energy before HVAC operation. There are two ways to store thermal energy. One is by operating the HVAC system and the other is by natural ventilation, mainly at night. The latter could be combined with daily HVAC operation as a hybrid ventilation. Thermal mass storage is useful to decrease the hourly peak load and the daily thermal load and can be used for both cooling and heating purpose.

43

Fault Detection and Diagnosis in Building HVAC Systems.  

E-Print Network (OSTI)

??Building HVAC systems account for more than 30% of annual energy consumption in United States. However, it has become apparent that only in a small… (more)

Najafi, Massieh

2010-01-01T23:59:59.000Z

44

New developments in noise control for HVAC systems.  

Science Conference Proceedings (OSTI)

The HVAC equipment industry is not known for rapid change. Although control systems have improved rapidly over the past few years

Timothy J. Foulkes

1996-01-01T23:59:59.000Z

45

Real-Time Measurement of Rates of Outdoor Airflow into HVAC Systems: A Field Study of Three Technologies  

E-Print Network (OSTI)

to determine flow resistance of HVAC ducts and fittings.W. 2003. Outdoor airflow into HVAC systems: an evaluation ofof outdoor airflow into HVAC systems. Lawrence Berkeley

Fisk, William J.; Sullivan, Douglas P.; Faulkner, David

2005-01-01T23:59:59.000Z

46

Simulation of residential HVAC system performance  

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 paper 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--which accounts for cyclic losses from the HVAC system and the effect of cycle length on energy and comfort performance.

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

2001-05-01T23:59:59.000Z

47

Analysis of a hybrid UFAD and radiant hydronic slab HVAC system  

E-Print Network (OSTI)

Air- Conditioning Engineers HVAC & R Research, vol. 50, Sep.and radiant hydronic slab HVAC system.   Paul RAFTERY a,* ,of a novel integrated HVAC system. This system combines an

Raftery, Paul; Lee, Kwang Ho; Webster, Thomas; Bauman, Fred

2011-01-01T23:59:59.000Z

48

SURFACE INDUSTRIAL HVAC SYSTEM DESCRIPTION DOCUMENT  

SciTech Connect

The purpose of this system description document (SDD) is to establish requirements that drive the design of the surface industrial heating, ventilation, and air-conditioning (HVAC) system and its bases to allow the design effort to proceed to license application. This SDD will be revised at strategic points as the design matures. This SDD identifies the requirements and describes the system design, as it currently exists, with emphasis on attributes of the design provided to meet the requirements. This SDD is an engineering tool for design control; accordingly, the primary audience and users are design engineers. This SDD is part of an iterative design process. It leads the design process with regard to the flowdown of upper tier requirements onto the system. Knowledge of these requirements is essential to performing the design process. The SDD follows the design with regard to the description of the system. The description that provided in this SDD reflects the current results of the design process.

M.M. Ansari

2005-04-05T23:59:59.000Z

49

Theoretical Minimum Energy Use of a Building HVAC System  

E-Print Network (OSTI)

This paper investigates the theoretical minimum energy use required by the HVAC system in a particular code compliant office building. This limit might be viewed as the "Carnot Efficiency" for HVAC system. It assumes that all ventilation and air conditioning in the building are provided using the minimum energy value that does not violate physical law.

Tanskyi, O.

2011-01-01T23:59:59.000Z

50

A Fault Detection and Diagnosis Method for HVAC Systems  

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

A Fault Detection and Diagnosis Method for HVAC Systems A Fault Detection and Diagnosis Method for HVAC Systems Speaker(s): Peng Xu Date: December 2, 2002 - 12:00pm Location: Bldg. 90 There is a growing consensus that most buildings do not perform as well as intended and that faults in HVAC systems are widespread in commercial buildings. An automated fault detection and diagnosis tool for HVAC systems is being developed, based on an integrated, life-cycle, approach to commissioning and performance monitoring. The tool uses component-level HVAC equipment models implemented in the SPARK equation-based simulation environment. The models are configured using design information and component manufacturers' data and then fine-tuned to match the actual performance of the equipment by using data measured during functional tests

51

HVAC & Building Management Control System Energy Efficiency Replacements  

SciTech Connect

The project objective was the replacement of an aging, un-repairable HVAC system which has grown inefficient and a huge energy consumer with low energy and efficient HVAC units, and installation of energy efficient building control technologies at City's YMCA Community Center.

Hernandez, Adriana

2012-09-21T23:59:59.000Z

52

HVAC system modeling and optimization: a data-mining approach.  

E-Print Network (OSTI)

?? Heating, ventilating and air-conditioning (HVAC) system is complex non-linear system with multi-variables simultaneously contributing to the system process. It poses challenges for both system… (more)

Tang, Fan

2010-01-01T23:59:59.000Z

53

The Application of Ultraviolet Germicidal Technology in HVAC Systems  

E-Print Network (OSTI)

One of the most significant issues for today's HVAC (Heating, Ventilation, and Air Conditioning) engineer is Indoor Air Quality (IAQ). Many building owners, operators, and occupants complain of foul odors emanating from HVAC systems. The objectionable odor is the byproduct of the microbial growth (mold and fungus) that accumulates and develops on wet surfaces of HVAC units, causing foul odors to emanate from affected systems and degrading the IAQ and unit performance. This objectionable odor has been appropriately named the "Dirty Sock" syndrome. Less obvious to the building occupants, but of equal importance, are the physical effects the microbial organisms have on HVAC equipment. They restrict the airflow and limit the heat transfer capability, which increases the operating costs of the equipment. Fortunately, IAQ degradation, foul odor, and increased expenses can be eliminated with the installation of the ultraviolet 'C' band (W-C) lamps. The ultraviolet germicidal lamps are designed to kill odor causing mold and fungus that grow in wet evaporator sections of HVAC units. These lamps are installed inside HVAC systems and irradiate areas inhabited by the offending organisms, making it impossible for them to survive. The organisms disappear, the odors disappear, and most importantly, the IAQ complaints disappear. This guide will discuss the microbial growth and IAQ contaminant problems in the HVAC industry, the W-C lamp and other possible solutions, and the benefits of using the HVAC Duty W-C lamp.

Taylor, M. J.

2000-01-01T23:59:59.000Z

54

HVAC system analysis: energy audit review  

SciTech Connect

Although most energy audits do not investigate HVAC systems in as much detail as would most design consultants, audit data can be most informative. For certain types of buildings, air-conditioning energy usage can be estimated by its absence from energy bills during winter months, and heating energy usage can be estimated by its absence from energy bills during the summer months. Cooling and heating energy usage can be even more accurately broken down when a fossil fuel is used for heating while electrical energy is used for cooling. It is easy to establish fairly accurate energy consumption estimates for lighting, fan motors, and pumps; this can be done by verifying their loads and multiplying them by known operating hours. The numerous notes contained in some energy audits may also provide ideas for retrofitting energy-consuming areas.

Harmon, K.S.

1983-01-01T23:59:59.000Z

55

Direct Digital Control for Building HVAC Systems, 2nd edition  

Science Conference Proceedings (OSTI)

From the Publisher:Direct Digital Control for Building HVAC Systems, Second Edition, is thoroughly updated and expanded to include complete coverage of the architecture of modern digital control systems, distributed intelligence networked systems, communication ...

Michael J. L. Coffin

1998-06-01T23:59:59.000Z

56

Modeling and optimization of building HVAC systems.  

E-Print Network (OSTI)

??This thesis presents the development of hybrid modeling methodologies for HVAC component static/steady-state models and dynamic/transient models, and the development and implementation of a model-based… (more)

Jin, Guang Yu.

2012-01-01T23:59:59.000Z

57

The Optimization of Control Parameters for VAV HVAC System Commissioning  

E-Print Network (OSTI)

One of the technical subjects in commissioning for HVAC system is to enhance control performance and time efficiency, while the tuning of the optimal parameters to control HVAC system takes much time and labor in particular. Therefore, we propose a kind of commissioning technique as follows. We identified the dynamic characteristics of components of an actual VAV HVAC system such as rooms, VAV dampers, two way valves and chilled water coils, and verified the behaviors of the models and choose the optimal control parameters on a personal computer. Then adopting them for the actual system, we verified the control performance. Through the procedure, we showed the possibility of off-site and off-line control parameter tuning to reduce the cost and time at on-site and in on-line using the measured data in a real HVAC system.

Song, S.; Maehara, K.; Sagara, N.

2006-01-01T23:59:59.000Z

58

The influence of HVAC systems on secondary organic aerosol formation Michael S. Waring1  

E-Print Network (OSTI)

The influence of HVAC systems on secondary organic aerosol formation Michael S. Waring1 , Jeffrey A, ventilation, and air- conditioning (HVAC) system. This study models the influence of HVAC systems on SOA. The most influential HVAC parameters are the flow rates, particle filtration, and indoor temperature

Siegel, Jeffrey

59

Best Practices for Energy Efficient Cleanrooms Efficient HVAC Systems: Variable-Speed-Drive Chillers  

E-Print Network (OSTI)

LBNL-58636 Best Practices for Energy Efficient Cleanrooms Efficient HVAC Systems: Variable Efficient Cleanrooms Efficient HVAC Water Systems: Variable-Speed-Drive Chillers Tengfang Xu Contents HVAC.................................................................................................................................... 6 #12;HVAC Water Systems Variable-Speed-Drive Chillers Summary Cleanroom energy benchmarking data

60

Co-simulation for performance prediction of integrated building and HVAC systems - An analysis of solution characteristics using a two-body system  

E-Print Network (OSTI)

of innovative integrated HVAC systems in buildings, infor building envelope and HVAC systems simu- lation - WillIntegrated simulation for HVAC performance prediction: State

Trcka, Marija

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac systems volume" 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

Fault Detection and Diagnosis in Building HVAC Systems  

E-Print Network (OSTI)

techniques for model-based FDD methods applied to vapordetection and diagnosis (FDD) has been an active area for6-17]. In building HVAC systems, FDD has received increasing

Najafi, Massieh

2010-01-01T23:59:59.000Z

62

Commissioning and Performance Diagnostics for HVAC Control Systems  

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

Commissioning and Performance Diagnostics for HVAC Control Systems Speaker(s): Ashish Singhal Date: December 20, 2006 - 12:00pm Location: 90-3122 Seminar HostPoint of Contact:...

63

Applications of HVAC System Utilizing Building Thermal Mass in...  

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

Applications of HVAC System Utilizing Building Thermal Mass in Japan Speaker(s): Katsuhiro Miura Date: January 27, 2012 - 10:00am Location: 90-3122 Seminar HostPoint of Contact:...

64

Neural network based optimal control of HVAC&R systems.  

E-Print Network (OSTI)

??Heating, Ventilation, Air-Conditioning and Refrigeration (HVAC&R) systems have wide applications in providing a desired indoor environment for different types of buildings. It is well acknowledged… (more)

Ning, Min

2008-01-01T23:59:59.000Z

65

Modeling and Measurement Constraints in Fault Diagnostics for HVAC Systems Massieh Najafi1  

E-Print Network (OSTI)

Modeling and Measurement Constraints in Fault Diagnostics for HVAC Systems Massieh Najafi1 , David for determining HVAC diagnostics, methods to detect faults in HVAC systems are still generally undeveloped. Most in a substantial increase in energy use. For example, failure of an HVAC fan may prevent cool air from one

66

Revised noise criteria for design and rating of HVAC systems  

Science Conference Proceedings (OSTI)

This paper reviews current methods of rating the noise produced by HVAC systems and explains why these ratings fail to be correlated with subjective opinion in many cases. An entirely new method of assigning noise ratings is proposed which is expected to provide a significantly better correlation between objective measurements and subjective response. The proposed new rating method makes use of a revised set of noise criterion curves (RC curves) which appeared for the first time in Chap. 35 of the 1980 Systems Volume of the ASHRAE Handbook. This paper also discusses the technical considerations leading to the development of the RC curves as a replacement for the NC curves which have been used in the past.

Warren E. Blazier Jr.

1984-01-01T23:59:59.000Z

67

Review of Residential Low-Load HVAC Systems  

SciTech Connect

In support of the U.S. Department of Energy’s (DOE’s) Building America Program, Pacific Northwest National Laboratory (PNNL) conducted an investigation to inventory commercially available HVAC technologies that are being installed in low-load homes. The first step in this investigation was to conduct a review of published literature to identify low-load HVAC technologies available in the United States and abroad, and document the findings of existing case studies that have evaluated the performance of the identified technologies. This report presents the findings of the literature review, identifies gaps in the literature or technical understanding that must be addressed before low-load HVAC technologies can be fully evaluated, and introduces PNNL’s planned research and analysis for this project to address identified gaps and potential future work on residential low-load HVAC systems.

Brown, Scott A.; Thornton, Brian; Widder, Sarah H.

2013-09-01T23:59:59.000Z

68

System-Level Monitoring and Diagnosis of Building HVAC System.  

E-Print Network (OSTI)

??Heating, ventilation, and air conditioning (HVAC) is an indoor environmental technology that is extensively instrumented for large-scale buildings. Among all subsystems of buildings, the HVAC… (more)

Wu, Siyu

2013-01-01T23:59:59.000Z

69

Energy-Efficient Building HVAC Control Using Hybrid System LBMPC  

E-Print Network (OSTI)

Improving the energy-efficiency of heating, ventilation, and air-conditioning (HVAC) systems has the potential to realize large economic and societal benefits. This paper concerns the system identification of a hybrid system model of a building-wide HVAC system and its subsequent control using a hybrid system formulation of learning-based model predictive control (LBMPC). Here, the learning refers to model updates to the hybrid system model that incorporate the heating effects due to occupancy, solar effects, outside air temperature (OAT), and equipment, in addition to integrator dynamics inherently present in low-level control. Though we make significant modeling simplifications, our corresponding controller that uses this model is able to experimentally achieve a large reduction in energy usage without any degradations in occupant comfort. It is in this way that we justify the modeling simplifications that we have made. We conclude by presenting results from experiments on our building HVAC testbed, which s...

Aswani, Anil; Taneja, Jay; Krioukov, Andrew; Culler, David; Tomlin, Claire

2012-01-01T23:59:59.000Z

70

Building energy modeling programs comparison Research on HVAC systems  

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

energy modeling programs comparison Research on HVAC systems energy modeling programs comparison Research on HVAC systems simulation part Title Building energy modeling programs comparison Research on HVAC systems simulation part Publication Type Journal Year of Publication 2013 Authors Zhou, Xin, Da Yan, Tianzhen Hong, and Dandan Zhu Keywords Building energy modeling programs, comparison tests, HVAC system simulation, theory analysis Abstract Building energy simulation programs are effective tools for the evaluation of building energy saving and optimization of design. The fact that large discrepancies exist in simulated results when different BEMPs are used to model the same building has caused wide concern. Urgent research is needed to identify the main elements that contribute towards the simulation results. This technical report summarizes methodologies, processes, and the main assumptions of three building energy modeling programs (BEMPs) for HVAC calculations: EnergyPlus, DeST, and DOE-2.1E, and test cases are designed to analyze the calculation process in detail. This will help users to get a better understanding of BEMPs and the research methodology of building simulation. This will also help build a foundation for building energy code development and energy labeling programs.

71

Solar House Sink Group HVAC System Design Final Report  

E-Print Network (OSTI)

In this project we apply a systems engineering approach to design an intelligent HVAC system. Using sensors and user provided information the systems determines and adjusts the cooling load on the fly to provide the most efficient operation possible, saving energy and money. The system utilizes variable speed drives to provide just enough capacity to keep the indoor

Bob Hayes; Will Seeber; Zhen Zhao; Zhen Kuang; Isr Advisor; Prof Austin; Prof Baras

2011-01-01T23:59:59.000Z

72

Commissioning and Performance Diagnostics for HVAC Control Systems  

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

Commissioning and Performance Diagnostics for HVAC Control Systems Commissioning and Performance Diagnostics for HVAC Control Systems Speaker(s): Ashish Singhal Date: December 20, 2006 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Philip Haves The presentation will focus on practical aspects of commissioning control loops in commercial HVAC systems and evaluating their routine performance. Simple and theoretically sound methods for diagnosing control performance will be presented that detect serious performance issues associated with control loops in modern buildings. The discussion will center on a new control loop commissioning tool that helps field personnel to quickly test, tune and troubleshoot control loops. In addition to the active tests for commissioning control loops, a suite of diagnostic algorithms are used in a

73

Measuring Advances in HVAC Distribution System Design  

SciTech Connect

Substantial commercial building energy savings have been achieved by improving the performance of the HV AC distribution system. The energy savings result from distribution system design improvements, advanced control capabilities, and use of variable-speed motors. Yet, much of the commercial building stock remains equipped with inefficient systems. Contributing to this is the absence of a definition for distribution system efficiency as well as the analysis methods for quantifying performance. This research investigates the application of performance indices to assess design advancements in commercial building thermal distribution systems. The index definitions are based on a first and second law of thermodynamics analysis of the system. The second law or availability analysis enables the determination of the true efficiency of the system. Availability analysis is a convenient way to make system efficiency comparisons since performance is evaluated relative to an ideal process. A TRNSYS simulation model is developed to analyze the performance of two distribution system types, a constant air volume system and a variable air volume system, that serve one floor of a large office building. Performance indices are calculated using the simulation results to compare the performance of the two systems types in several locations. Changes in index values are compared to changes in plant energy, costs, and carbon emissions to explore the ability of the indices to estimate these quantities.

Franconi, E.

1998-05-01T23:59:59.000Z

74

Evaluation of commercially available techniques and development of simplified methods for measuring grille airflows in HVAC systems  

E-Print Network (OSTI)

Walker. 2002. “Residential HVAC and Distribution researchMeasuring Grille Airflows in HVAC Systems I.S. Walker, C.P.Measuring Grille Airflows in HVAC Systems I.S. Walker, C.P.

Walker, Iain S.; Wray, Craig P.; Guillot, Cyril; Masson, S.

2003-01-01T23:59:59.000Z

75

Using measured equipment load profiles to "right-size" HVAC systems and reduce energy use in laboratory buildings (Pt. 2)  

E-Print Network (OSTI)

load profiles to “right-size” HVAC systems and reduce energyGeorgia. ASHRAE [1999]. HVAC Applications Handbook 1999.Inefficiency of a Common Lab HVAC System,” presented at the

Mathew, Paul; Greenberg, Steve; Frenze, David; Morehead, Michael; Sartor, Dale; Starr, William

2008-01-01T23:59:59.000Z

76

WEATHER SEQUENCES FOR PREDICTING HVAC SYSTEM BEHAVIOUR IN RESIDENTIAL UNITS LOCATED IN TROPICAL CLIMATES.  

E-Print Network (OSTI)

WEATHER SEQUENCES FOR PREDICTING HVAC SYSTEM BEHAVIOUR IN RESIDENTIAL UNITS LOCATED IN TROPICAL on the energy needs of HVAC system. We'll apply the method on the tropical Reunion Island. The methodological

Paris-Sud XI, Université de

77

Fight Fall Allergies and Save Energy by Checking Your HVAC System...  

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

Fight Fall Allergies and Save Energy by Checking Your HVAC System Fight Fall Allergies and Save Energy by Checking Your HVAC System October 15, 2012 - 3:19pm Addthis Change your...

78

Fuzzy Control of HVAC Systems Optimized by Genetic Algorithms  

Science Conference Proceedings (OSTI)

This paper presents the use of genetic algorithms to develop smartly tuned fuzzy logic controllers dedicated to the control of heating, ventilating and air conditioning systems concerning energy performance and indoor comfort requirements. This problem ... Keywords: HVAC systems, fuzzy logic controllers, genetic tuning, multiple criteria

Rafael Alcalá; Jose M. Benítez; Jorge Casillas; Oscar Cordón; Raúl Pérez

2003-03-01T23:59:59.000Z

79

BLACK-BOX MODELLING OF HVAC SYSTEM: IMPROVING THE PERFORMANCES OF NEURAL NETWORKS  

E-Print Network (OSTI)

BLACK-BOX MODELLING OF HVAC SYSTEM: IMPROVING THE PERFORMANCES OF NEURAL NETWORKS Eric FOCK Ile de La Réunion - FRANCE ABSTRACT This paper deals with neural networks modelling of HVAC systems of HVAC system can be modelled using manufacturer design data presented as derived performance maps

Paris-Sud XI, Université de

80

Automated Testing of HVAC Systems for Commissioning Tim Salsbury and Rick Diamond  

E-Print Network (OSTI)

Automated Testing of HVAC Systems for Commissioning Tim Salsbury and Rick Diamond Lawrence Berkeley of the commissioning of HVAC systems. The approach is based on software that generates a sequence of test signals for new and retrofit projects. Introduction The performance of many HVAC systems is limited more by poor

Diamond, Richard

Note: This page contains sample records for the topic "hvac systems volume" 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

A CONTROLLER FOR HVAC SYSTEMS WITH FAULT DETECTION CAPABILITIES BASED ON SIMULATION MODELS  

E-Print Network (OSTI)

1 A CONTROLLER FOR HVAC SYSTEMS WITH FAULT DETECTION CAPABILITIES BASED ON SIMULATION MODELS T. I describes a control scheme with fault detection capabilities suitable for application to HVAC systems as a reference of correct operation. Faults that occur in the HVAC system under control cause the PI

82

Tile of the document: HVAC system component-based modeling and implementation  

E-Print Network (OSTI)

1 Abstract Tile of the document: HVAC system component-based modeling and implementation Karam the foundation for modeling components that are used in HVAC systems (heating, ventilation, and air conditioning such functionalities. #12;2 HVAC system component-based modeling and implementation By Karam H. Rajab Scholarly

Austin, Mark

83

Co-simulation for performance prediction of integrated building and HVAC systems -An analysis of solution  

E-Print Network (OSTI)

Co-simulation for performance prediction of integrated building and HVAC systems - An analysis performance simulation of buildings and heating, ventilation and air- conditioning (HVAC) systems can help, heating, ventilation and air-conditioning (HVAC) systems are responsible for 10%-60% of the total building

84

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

85

Computational Study on Thermal Properties of HVAC System with Building Structure Thermal Storage  

E-Print Network (OSTI)

Building structure thermal storage (BSTS) HVAC systems can store heat during nighttime thermal storage operation (nighttime operation hours) by using off-peak electricity and release it in the daytime air-conditioning operation (daytime operation hours) by utilizing a large amount of the thermal capacity of building structures such as beams, columns and floors composed of concrete. These BSTS systems have recently been considered as one method for leveling hourly electricity demands for HVAC on a day-to-day basis. Through a simulation using a model developed with experimental data, this paper describes how various factors for the design and operation of a BSTS quantitatively affect the charge/discharge performances of a HVAC system. As a result, the following was revealed: the thermal performance of the system is strongly influenced by the daily heat storage operation hours, supply air volume and supply air temperature during the nighttime operation hours, stored heat caused the total daytime cooling extraction to decrease by 11% to 58% and the daily total cooling extraction through nighttime to daytime to increase by 4% to 17% compared with the values of non- thermal storage HVAC system.

Sato, Y.; Sagara, N.; Ryu, Y.; Maehara, K.; Nagai, T.

2007-01-01T23:59:59.000Z

86

An evaluation of three commercially available technologies for real-time measurement of rates of outdoor airflow into HVAC systems  

E-Print Network (OSTI)

RATES OF OUTDOOR AIRFLOW INTO HVAC SYSTEMS William J. Fisk,determine flow resistance of hvac ducts and fittings. A S H

Fisk, William J.; Faulkner, David; Sullivan, Douglas P.

2004-01-01T23:59:59.000Z

87

RF propagation in an HVAC duct system: impulse response characteristics of the channel  

E-Print Network (OSTI)

RF propagation in an HVAC duct system: impulse response characteristics of the channel Pavel V, the heating, ventilation, and air conditioning (HVAC) duct system in buildings is a complex network of hollow at RF and microwave frequencies of com- mon interest. HVAC ducts can be used as a wireless communication

Stancil, Daniel D.

88

Conventional Facilities Chapter 6: HVAC Systems 6-1 NSLS-II Preliminary Design Report  

E-Print Network (OSTI)

Conventional Facilities Chapter 6: HVAC Systems 6-1 NSLS-II Preliminary Design Report 6 MECHANICAL ­ HVAC SYSTEMS 6.1 Design Criteria 6.1.1 Codes and Standards The latest edition of the codes, standards have adequate capacity and head, no chilled water pumps #12;Conventional Facilities Chapter 6: HVAC

Ohta, Shigemi

89

Seamless Handover in Buildings Using HVAC Ducts: A New System Architecture  

E-Print Network (OSTI)

Seamless Handover in Buildings Using HVAC Ducts: A New System Architecture Ariton E. Xhafa, Paisarn-- In this paper, we present an innovative solution to the handover problem in multi-story buildings using HVAC of the indoor wireless networks that use the heating, ventilation, and air conditioning (HVAC) ducts

Stancil, Daniel D.

90

Plutonium Finishing Plant (PFP) HVAC System Component Index  

SciTech Connect

This document lists safety class (SC) and safety significant (SS) components for the Heating Ventilation Air Conditioning (HVAC) and specifies the critical characteristics for Commercial Grade Items (CGI), as required by HNF-PRO-268 and HNF-PRO-18 19. These are the minimum specifications that the equipment must meet in order to properly perform its safety function. There may be several manufacturers or models that meet the critical characteristics for any one item. The Plutonium Finishing Plant (PFP) HVAC System includes sub-systems 25A through 25K. Specific system boundaries and justifications are contained in HNF-SD-CP-SDD-005, ''Definition and Means of Maintaining the Ventilation System Confinement Portion of the PFP Safety Envelope.'' The procurement requirements associated with the system necessitates procurement of some system equipment as Commercial Grade Items in accordance with HNF-PRO-268, ''Control of Purchased Items and Services.''

DIAZ, E.N.

2000-03-30T23:59:59.000Z

91

Wireless Demand Response Controls for HVAC Systems  

E-Print Network (OSTI)

ASHRAE: American Society of Heating, Refrigerating, and Air-Conditioning Engineers Btu: British thermal unit CAV: constant air volume CCZ: California climate zone

Federspiel, Clifford

2010-01-01T23:59:59.000Z

92

Wireless Demand Response Controls for HVAC Systems  

E-Print Network (OSTI)

data from California Climate Zone (CCZ) 12, which includesdesign day using California Climate Zone 12 weather data (air volume CCZ: California climate zone CDMA: Code Division

Federspiel, Clifford

2010-01-01T23:59:59.000Z

93

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

94

Outdoor airflow into HVAC systems: An evaluation of measurement  

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

Outdoor airflow into HVAC systems: An evaluation of measurement Outdoor airflow into HVAC systems: An evaluation of measurement technologies Title Outdoor airflow into HVAC systems: An evaluation of measurement technologies Publication Type Report LBNL Report Number LBNL-53834 Year of Publication 2003 Authors Fisk, William J., David Faulkner, Douglas P. Sullivan, and William W. Delp Abstract During the last few years, new technologies have been introduced for measuring the flow rates of outdoor air (OA) into HVAC systems; however, an evaluation of these measurement technologies has not previously been published. This document describes a test system and protocols developed for controlled evaluation of these measurement technologies. The results of tests of three measurement technologies are also summarized. The test system and protocol were judged practical and very useful. The test results indicate that one measurement technology can measure OA flow rates with errors of 20% or less without a field-based calibration, as long as the OA velocities are sufficient to provide an accurately measurable pressure signal. The test results for a second measurement technology are similar; however, a difficult field-based calibration relating the OA flow rate with the pressure signal would be required to reduce errors below approximately 30%. The errors in OA flow rates measured with the third measurement technology, that uses six electronic airspeed sensors downstream of the OA inlet louver, exceeded 100%; however, these errors could be substantially reduced through a difficult field based calibration. The effects of wind on the accuracy of these measurement technologies still needs to be evaluated

95

Computer program for conducting acoustical analyses of HVAC systems.  

Science Conference Proceedings (OSTI)

An interactive Windows?based computer program has been developed that can be used to conduct complete acoustical analyses of HVAC systems. The program can be used to track sound from a HVACsound source such as a fan to a room. Both sound from a single path between a sound source and room or from multiple paths between a sound source and room can be investigated. The program has a full set of editing features that include change

Douglas D. Reynolds; Scott C. Mitchell

1996-01-01T23:59:59.000Z

96

Energy Renovations: Volume 14: HVAC - A Guide for Contractors to Share with Homeowners  

SciTech Connect

This report was prepared by PNNL for DOE's Building America program and is intended as a guide that energy performance contractors can share with homeowners to describe various energy-efficient options for heating, cooling, and ventilating existing homes. The report provides descriptions of many common and not-so-common HVAC systems, including their advantages and disadvantages, efficiency ranges and characteristics of high-performance models, typical costs, and climate considerations. The report also provides decision trees and tables of useful information for homeowners who are making decisions about adding, replacing, or upgrading existing HVAC equipment in their homes. Information regarding home energy performance assessments (audits) and combustion safety issues when replacing HVAC equipment are also provided.

Gilbride, Theresa L.; Baechler, Michael C.; Hefty, Marye G.; Hand, James R.; Love, Pat M.

2011-08-29T23:59:59.000Z

97

This paper has been downloaded from the Building and Environmental Thermal Systems Research Group at Oklahoma State University (http://www.hvac.okstate.edu).  

E-Print Network (OSTI)

at Oklahoma State University (http://www.hvac.okstate.edu). The correct citation for the paper is: Spitler, J.D. 2007. Research Planning for the HVAC&R Industry. HVAC&R Research 13(5):681- 682. #12;VOLUME 13, NUMBER 5 HVAC&R RESEARCH SEPTEMBER 2007 681 EDITORIAL Research Planning for the HVAC&R Industry Jeffrey D

98

Analysis and modelling of membrane heat exchanger in HVAC energy recovery systems.  

E-Print Network (OSTI)

??The performance of membrane heat exchangers for HVAC total energy recovery systems was evaluated through experimentation and detailed system modelling. The operating principle of the… (more)

Nasif, Mohammad Shakir

2008-01-01T23:59:59.000Z

99

Predicting of fan speed for energy saving in HVAC system based on adaptive network based fuzzy inference system  

Science Conference Proceedings (OSTI)

In this paper, a HVAC (heating, ventilating and air-conditioning) system has two different zones was designed and fan motor speed to minimize energy consumption of the HVAC system was controlled by a conventional (proportional-integral-derivative) PID ... Keywords: ANFIS, Air flow control, Energy saving, Fan motor speed predicting, HVAC system, PID control, Temperature control

Servet Soyguder; Hasan Alli

2009-05-01T23:59:59.000Z

100

Design of Control Systems for HVAC Applications  

E-Print Network (OSTI)

The design and application of temperature control systems on a commercial building will bring the question to mind: Should the system be Pneumatic? Should it be Electronic? There is concern as to which system will be more appropriate to a certain project. With cost, maintenance, performance, dependability, and the cost of energy as a main concern of owners, the temperature control system has become an important part of efficient utilization of energy. Application of temperature control systems to heating, ventilating, and air conditioning systems has become an integral part of energy management. The first phase of the program will address the problem of selection of a type of system that will be cost and energy efficient, with a minimum maintenance program. One area to be covered will be the technician and his ability to service the temperature control systems, in addition to information on the schools and technical training. The availability of trained and experienced service technicians creates a major problem for remote towns and communities. Control systems are integrated to energy management systems. Without proper maintenance the energy savings will not perform at their design level. A sub-topic on up-to-date temperature control systems with retrofit needs will he included in the presentation.

Smith, A. L.

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac systems volume" 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

Measuring Advances in HVAC Distribution System Design  

E-Print Network (OSTI)

of this "thermal mixing", the heating and cooling loadsyear) Cooling Plant Heating Plant Fans Total Thermal Tobllthermal distribution system includes the components that carry the heating and cooling

Franconi, E.

2011-01-01T23:59:59.000Z

102

Measuring Advances in HVAC Distribution System Design  

E-Print Network (OSTI)

provide building space conditioning. In an all-air system,process that provides space conditioning to the buildingIt indicates building space conditioning requirements. In

Franconi, E.

2011-01-01T23:59:59.000Z

103

Design Analysis and Experimental Investigation of the HVAC System in an IC Circuit Plant.  

E-Print Network (OSTI)

??It is the goal of this project to investigate the energy conservation measures which can be adapted in an electronic manufacturing plant HVAC system. Computer… (more)

Chang, I-wei

2005-01-01T23:59:59.000Z

104

REDESIGN OF HVAC SYSTEM TO IMPROVE ENERGY EFFICIENCY OF EDUCATIONAL BUILDING.  

E-Print Network (OSTI)

??An energy modeling software was used to analyze the current building configuration and simulations were performed in an attempt to redesign the current HVAC system… (more)

Hagene, Brian Matthew

2012-01-01T23:59:59.000Z

105

Design of compartmental silencer for HVAC system  

Science Conference Proceedings (OSTI)

Air conditioning and ventilation system is the major noise sources in the commercial building. Noise will be propagated from fan and through the associated ductwork into working area. In order to reduce the noise transmitted

Y. H. Chan; Y. S. Choy; R. C. K. Leung

2012-01-01T23:59:59.000Z

106

Wireless Demand Response Controls for HVAC Systems  

Science Conference Proceedings (OSTI)

The objectives of this scoping study were to develop and test control software and wireless hardware that could enable closed-loop, zone-temperature-based demand response in buildings that have either pneumatic controls or legacy digital controls that cannot be used as part of a demand response automation system. We designed a SOAP client that is compatible with the Demand Response Automation Server (DRAS) being used by the IOUs in California for their CPP program, design the DR control software, investigated the use of cellular routers for connecting to the DRAS, and tested the wireless DR system with an emulator running a calibrated model of a working building. The results show that the wireless DR system can shed approximately 1.5 Watts per design CFM on the design day in a hot, inland climate in California while keeping temperatures within the limits of ASHRAE Standard 55: Thermal Environmental Conditions for Human Occupancy.

Federspiel, Clifford

2009-06-30T23:59:59.000Z

107

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

108

Co-design of control algorithm and embedded platform for building HVAC systems  

Science Conference Proceedings (OSTI)

The design of heating, ventilation and air conditioning (HVAC) systems is crucial for reducing energy consumption in buildings. As complex cyber-physical systems, HVAC systems involve three closely-related subsystems -- the control algorithm, the physical ... Keywords: building energy efficiency, co-design, platform-based design

Mehdi Maasoumy, Qi Zhu, Cheng Li, Forrest Meggers, Alberto Sangiovanni-Vincentelli

2013-04-01T23:59:59.000Z

109

Development of HVAC System Performance Criteria Using Factorial Design and DOE-2 Simulation  

E-Print Network (OSTI)

A new approach is described for the development of Heating, Ventilating, and Air-conditioning (HVAC) System Performance Criteria for the Texas Building Energy Design Standard. This approach integrates a design of experimental methodology and DOE-2 simulation to identify the effects of control parameters on HVAC system energy performance. Three new criteria - transport, plant, and system performance factors-are used as measures of system performance. The procedure has been applied to the development of criteria for a variable-air-volume (VAV) and a constant-air-volume (CAV) system in three Texas climates. The results show that the air distribution system pressure loss, cooling coil exit temperature set-pint, operation of an economizer, and use of dead band controls have significant effects on air transport energy use and total system performance. The selection of control strategies and set-points have a clear impact on energy use. There is also a great energy-saving potential of converting from a CAV to a VAV system.

Hou, D.; Jones, J. W.; Hunn, B. D.; Banks, J. A.

1996-01-01T23:59:59.000Z

110

An "ageing" operator and its use in the highly constrained topological optimization of HVAC system design  

Science Conference Proceedings (OSTI)

The synthesis of novel heating, ventilating, and air-conditioning (HVAC), system configurations is a mixed-integer, non-linear, highly constrained, multi-modal, optimization problem, with many of the constraints being subject to time-varying boundary ... Keywords: HVAC, evolutionary algorithms, system design, topological optimization

Jonathan Wight; Yi Zhang

2005-06-01T23:59:59.000Z

111

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

112

Direct Digital Control- A Tool for Energy Management of HVAC Systems  

E-Print Network (OSTI)

Direct digital control (DDC) applied to heating, ventilating, and air-conditioning (HVAC) systems corrects many of the deficiencies of conventional automatic temperature control systems. By applying new control sequences, DDC optimizes HVAC energy use. DDC can reduce HVAC operation and maintenance time and provide the environmental conditions needed to maximize production. DDC technology uses standalone, microprocessor based controllers. Controllers directly sense and process control variables (e.g. temperature, pressure) and provide a control signal to an actuator. Personal computers provide remote or local access to the digital controllers and give HVAC mechanics, energy managers, and facility engineers capabilities that conventional control systems do not offer. This paper discusses the most common deficiencies of conventionally controlled HVAC systems, advantages of DOC systems, and a case study retrofit from pneumatic control to digital control.

Swanson, K.

1993-03-01T23:59:59.000Z

113

Proposal for the Award of a Contract for Maintenance, Operation and Minor Installation Work for CERN Cooling and HVAC Systems  

E-Print Network (OSTI)

Proposal for the Award of a Contract for Maintenance, Operation and Minor Installation Work for CERN Cooling and HVAC Systems

1996-01-01T23:59:59.000Z

114

Co-simulation of innovative integrated HVAC systems in buildings  

SciTech Connect

Integrated performance simulation of buildings HVAC systems can help in reducing energy consumption and increasing occupant comfort. However, no single building performance simulation (BPS) tool offers sufficient capabilities and flexibilities to analyze integrated building systems and to enable rapid prototyping of innovative building and system technologies. One way to alleviate this problem is to use co-simulation, as an integrated approach to simulation. This article elaborates on issues important for co-simulation realization and discusses multiple possibilities to justify the particular approach implemented in the here described co-simulation prototype. The prototype is validated with the results obtained from the traditional simulation approach. It is further used in a proof-of-concept case study to demonstrate the applicability of the method and to highlight its benefits. Stability and accuracy of different coupling strategies are analyzed to give a guideline for the required coupling time step.

Trcka, Marija; Hensena, Jan L.M.; Wetter, Michael

2010-06-21T23:59:59.000Z

115

Feasibility of retrofitting centralized HVAC systems for room-level zoning  

Science Conference Proceedings (OSTI)

Heating, ventilation, and cooling (HVAC) accounts for 38% of building energy usage, and over 15% of all US energy usage, making it one of the nation's largest energy consumers. Many attempts have been made to optimize the control of HVAC systems by minimizing ... Keywords: sensing,Building energy,wireless sensor networks

Tamim Sookoor; Brian Holben; Kamin Whitehouse

2012-06-01T23:59:59.000Z

116

Procedures to identify Energy Conservation Opportunities applied to HVAC system: example of VSD of chilled water pumps  

E-Print Network (OSTI)

Procedures to identify Energy Conservation Opportunities applied to HVAC system: example of VSD of HVAC equipment using variable speed drive (VSD) is an Energy Conservation Opportunity (ECO) which can

Paris-Sud XI, Université de

117

RELIABILITY ANALYSIS OF THE ELECTRICAL POWER DISTRIBUTION SYSTEM TO SELECTED PORTIONS OF THE NUCLEAR HVAC SYSTEM  

Science Conference Proceedings (OSTI)

A design requirement probability of 0.01 or less in a 4-hour period ensures that the nuclear heating, ventilation, and air-conditioning (HVAC) system in the primary confinement areas of the Dry Transfer Facilities (DTFs) and Fuel Handling Facility (FHF) is working during a Category 1 drop event involving commercial spent nuclear fuel (CSNF) assemblies (BSC 2004a , Section 5.1.1.48). This corresponds to an hourly HVAC failure rate of 2.5E-3 per hour or less, which is contributed to by two dominant causes: equipment failure and loss of electrical power. Meeting this minimum threshold ensures that a Category 1 initiating event followed by the failure of HVAC is a Category 2 event sequence. The two causes for the loss of electrical power include the loss of offsite power and the loss of onsite power distribution. Thus, in order to meet the threshold requirement aforementioned, the failure rate of mechanical equipment, loss of offsite power, and loss of onsite power distribution must be less than or equal to 2.5E-3 per hour for the nuclear HVAC system in the primary confinement areas of the DTFs and FHF. The loss of offsite power occurs at a frequency of 1.1E-5 per hour (BSC 2004a, Section 5.1.1.48). The purpose of this analysis is to determine the probability of occurrence of the unavailability of the nuclear HVAC system in the primary confinement areas of the DTFs and FHF due to loss of electrical power. In addition, this analysis provides insights on the contribution to the unavailability of the HVAC system due to equipment failure. The scope of this analysis is limited to finding the frequency of loss of electrical power to the nuclear HVAC system in the primary confinement areas of the DTFs and FHF.

N. Ramirez

2004-12-16T23:59:59.000Z

118

A Hierarchical Rule-Based Fault Detection and Diagnostic Method for HVAC Systems  

E-Print Network (OSTI)

A rule-based, system-level fault detection and diagnostic (FDD) method for HVAC systems was developed. It functions as an interface between multiple, equipment-specific FDD tools and a human operator. The method resolves and prioritizes conflicting fault reports from equipment-specific FDD tools, performs FDD at the system level, and presents an integrated view of an HVAC system’s fault status to an operator. A simulation study to test and evaluate the method was conducted.

Jeffrey Schein; Steven T. Bushby

2005-01-01T23:59:59.000Z

119

ETME 422 -REFRIGERATION & HVAC SYSTEMS FALL 2011 LEC -10:00 -10:50am M W F RH 312  

E-Print Network (OSTI)

10/31/2011 ETME 422 - REFRIGERATION & HVAC SYSTEMS FALL 2011 LEC - 10:00 - 10:50am M W F RH 312 Catalog Description ETME 422 PRINCIPLES OF HVAC I F 3 cr. LEC 3 PREREQUISITE: EMEC 320 or EGEN 324. -- Refrigeration and heating, ventilating and air-conditioning (HVAC) for comfort and industrial applications

Dyer, Bill

120

A BEMS-Assisted Commissioning Tool to Improve the Energy Performance of HVAC Systems  

E-Print Network (OSTI)

The evolving capabilities of Building Energy Management Systems (BEMS) offer new opportunities to automate some parts of the commissioning process and can generate benefits over the entire life of a building. These benefits include a reduction of process cost and manual effort on site, improved quality assurance process and the adoption of automated energy audit capabilities to improve overall building performance. This paper presents the concept for a new automated commissioning tool that verifies and optimizes the performance of building HVAC systems using the capabilities of BEMS. The tool is applicable mainly to commercial and institutional buildings. In its simplest form, the tool monitors building control data and stores it in a structured database to be used online or upon request. Data resulting from standardized test procedures invoked manually or automatically are also stored in the database. A reasoning algorithm performs an intelligent analysis of the monitored data and also performs additional automated commissioning of HVAC components and systems, identifying faults, diagnosing them, and evaluating the potential energy efficiency improvements. The process is completed by sending detailed comprehensive reports to the user. This paper also includes an example showing how an automated BEMS-assisted commissioning tool can potentially be applied to improve the energy performance of variable-air-volume fan systems.

Choiniere, D.; Corsi, M.

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac systems volume" 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

Application of computational intelligence in modeling and optimization of HVAC systems.  

E-Print Network (OSTI)

?? HVAC (Heating Ventilating and Air-Conditioning) system is multivariate, nonlinear, and shares time-varying characteristics. It poses challenges for both system modeling and performance optimization. Traditional… (more)

Li, Mingyang

2009-01-01T23:59:59.000Z

122

A model-based predictive supervisory controller for multi-evaporator HVAC systems  

Science Conference Proceedings (OSTI)

Multi-evaporator vapor compression cooling systems are representative of the complex, distributed nature of modern HVAC systems. Earlier research efforts focused on the development of a decentralized control architecture for individual evaporators that ...

Matthew S. Elliott; Bryan P. Rasmussen

2009-06-01T23:59:59.000Z

123

Temporal model-based diagnostics generation for HVAC control systems  

Science Conference Proceedings (OSTI)

Optimizing energy usage in buildings requires global models that integrate multiple factors contributing to energy, such as lighting, "Heating, Ventilating, and Air Conditioning" (HVAC), security, etc. Model transformation methods can then use these ...

Marion Behrens; Gregory Provan

2010-06-01T23:59:59.000Z

124

Post-Retrocommissioning HVAC Operations Monitoring Using Enterprise-Wide energy Management System  

E-Print Network (OSTI)

Since 2004, the County of Los Angeles have retrocommissioned over 4 million square feet and additional RCx work is underway. The scope of the HVAC retrocommissioning (RCs) involved systematic investigation of mechanical, electrical and controls components/systems to diagnose and resolve root causes of operational deficiencies. During the implementation phase, new energy efficiency measures were installed, sequence of operations were optimized and functionally tested. System-level benchmark models for HVAC systems were developed based on optimized runs of eQUEST energy models and parametrically integrated into the County owned web-based Enterprise Energy Management Information Systems (EEMIS) with Itron/Silicon Energy EEM Suite backbone for the purpose of monitoring the operations of the HVAC systems. The paper and presentation describes the HVAC RCx process to optimize operations, cost and savings associated with this project and key operational changes to sustain optimized operations without sacrificing tenant comfort.

Amarnani, N.; Roberts, B.; Choy, H.

2007-01-01T23:59:59.000Z

125

A model-based fault detection and diagnostic methodology for secondary HVAC systems.  

E-Print Network (OSTI)

??In the U.S., buildings consume 39 % of primary energy, of which, 13.5% is attributed to HVAC systems. Faults, arising from sensors, equipment, and control… (more)

Li, Shun

2009-01-01T23:59:59.000Z

126

ASHRAE sound and vibration technical committee position statement on the use of fiberglass in HVAC systems  

Science Conference Proceedings (OSTI)

Fiberglass duct liner continues to be the most cost?effective solutions to noise control in most HVAC air duct systems. There has been a recent increase in the number of institutional

Russell A. Cooper

1995-01-01T23:59:59.000Z

127

Applying brain emotional learning algorithm for multivariable control of HVAC systems  

Science Conference Proceedings (OSTI)

In this paper, we apply a modified version of Brain Emotional Learning (BEL) controller for Heating, Ventilating and Air Conditioning (HVAC) control system whose multivariable, nonlinear and non-minimum phase nature makes the task difficult. The proposed ...

N. Sheikholeslami; D. Shahmirzadi; E. Semsar; C. Lucas; M. J. Yazdanpanah

2006-01-01T23:59:59.000Z

128

CALIFORNIA ENERGY Large HVAC Building  

E-Print Network (OSTI)

CALIFORNIA ENERGY COMMISSION Large HVAC Building Survey Information Database of Buildings over 100 Design of Large Commercial HVAC Systems research project, one of six research elements in the Integrated Design of Large Commercial HVAC Systems Integrated Design of Small Commercial HVAC Systems Integrated

129

Fight Fall Allergies and Save Energy by Checking Your HVAC System |  

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

Fight Fall Allergies and Save Energy by Checking Your HVAC System Fight Fall Allergies and Save Energy by Checking Your HVAC System Fight Fall Allergies and Save Energy by Checking Your HVAC System October 15, 2012 - 3:19pm Addthis Change your furnace filter to help keep allergies at bay and keep your furnace and air conditioner running efficiently. | Photo courtesy of ©iStockphoto.com/JaniceRichard. Change your furnace filter to help keep allergies at bay and keep your furnace and air conditioner running efficiently. | Photo courtesy of ©iStockphoto.com/JaniceRichard. Elizabeth Spencer Communicator, National Renewable Energy Laboratory What does this mean for me? Change your furnace filters every month or two to keep your HVAC equipment operating efficiently. I have unbelievably horrible fall allergies. I've never figured out what

130

MODELING AND SIMULATION OF HVAC FAULTS IN ENERGYPLUS  

E-Print Network (OSTI)

Methodology for Secondary HVAC Systems, Doctoral Thesis,2002, Particulate Fouling of HVAC Heat Exchangers, Doctoraland diagnosis strategy for HVAC systems involving sensor

Basarkar, Mangesh

2013-01-01T23:59:59.000Z

131

HVAC Installed Performance  

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

HVAC Installed Performance HVAC Installed Performance ESI, Tim Hanes Context * The building envelope has historically been the focus in residential homes. * The largest consumer of energy in residential homes is typically the HVAC system. * Testing the performance of the HVAC system has not been pursued to its full potential. Technical Approach * Currently very little performance testing is being done to the HVAC system. * The only way to know if a HVAC system is operating correctly is to measure the Btu/h. * This should be done at the equipment and at the the system. Recommended Guidance * Training of HVAC technicians, installers, and salespeople is a must. * If only the technician is trained than implementing the change will not happen. * Public awareness of proper installation and its

132

An Application of State-Of-The-Art HVAC and Building Systems  

E-Print Network (OSTI)

This case study describes the successful application of state-of-the-art HVAC and building systems at a large commercial office and industrial facility. The facility's exterior envelope systems, HVAC systems, lighting systems, energy conservation systems, exhaust/heat recovery/make-up air systems, water cooling systems, compressed air systems, electrical distribution systems, water heating systems, and other systems and measures taken are each discussed in detail. The important role that energy engineering played in the overall planning, design, and management of the project is given particular emphasis. Also, the engineering strategies used to integrate energy efficiency, performance optimization, current technology, and cost effectiveness are underscored throughout.

Fiorino, D. P.

1988-09-01T23:59:59.000Z

133

A new modelling methodology to control HVAC systems  

Science Conference Proceedings (OSTI)

Thermal comfort plays an important role in any working environment, but it is a very vague term and it is also very difficult to represent it on modern computers. Its proper definition could be a condition of the mind which expresses satisfaction with ... Keywords: Control, Energy, HVAC, Model, Thermal comfort

José A. Orosa

2011-04-01T23:59:59.000Z

134

Framework combining static optimization, dynamic scheduling and decision analysis applicable to complex primary HVAC&R systems.  

E-Print Network (OSTI)

??The primary objective of this work is to propose a general and computationally efficient methodology for dynamic scheduling and optimal control of primary HVAC&R systems… (more)

Jiang, Wei

2006-01-01T23:59:59.000Z

135

Application of Functional Link Neural Network to HVAC Thermal Dynamic System Identification  

E-Print Network (OSTI)

Abstract — Recent efforts to incorporate aspects of artificial intelligence into the design and operation of automatic control systems have focused attention on techniques such as fuzzy logic, artificial neural networks, and expert systems. The use of computers for direct digital control highlights the recent trend toward more effective and efficient heating, ventilating, and airconditioning (HVAC) control methodologies. Researchers in the HVAC field have stressed the importance of self learning in building control systems and have encouraged further studies in the integration of optimal control and other advanced techniques into the formulation of such systems. Artificial neural networks can also be used to emulate the plant dynamics, in order to estimate future plant outputs and obtain plant input/output sensitivity information for on-line neural control adaptation. This paper describes a functional link neural network approach to performing the HVAC thermal dynamic system identification. Methodologies to reduce inputs of the functional link network to reduce the complexity and speed up the training speed will be presented. Analysis and comparison between the functional link network approach and the conventional network approach for the HVAC thermal modeling will also be presented. Index Terms—Functional link, HVAC, intelligent control, neural network, system identification.

Jason Teeter; Mo-yuen Chow; Senior Member

1998-01-01T23:59:59.000Z

136

CALIFORNIA ENERGY Large HVAC Energy Impact Report  

E-Print Network (OSTI)

CALIFORNIA ENERGY COMMISSION Large HVAC Energy Impact Report Statewide Energy Impact Report are part of the Integrated Design of Large Commercial HVAC Systems research project. The reports: Productivity and Interior Environments Integrated Design of Large Commercial HVAC Systems Integrated Design

137

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, 40°F 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 (58-68°F), since it handles sensible cooling load only.

Meckler, G.

1986-01-01T23:59:59.000Z

138

International Energy Agency Building Energy Simulation Test and Diagnostic Method for Heating, Ventilating, and Air-Conditioning Equipment Models (HVAC BESTEST): Volume 2: Cases E300-E545.  

DOE Green Energy (OSTI)

This report documents an additional set of mechanical system test cases that are planned for inclusion in ANSI/ASHRAE STANDARD 140. The cases test a program's modeling capabilities on the working-fluid side of the coil, but in an hourly dynamic context over an expanded range of performance conditions. These cases help to scale the significance of disagreements that are less obvious in the steady-state cases. The report is Vol. 2 of HVAC BESTEST Volume 1. Volume 1 was limited to steady-state test cases that could be solved with analytical solutions. Volume 2 includes hourly dynamic effects, and other cases that cannot be solved analytically. NREL conducted this work in collaboration with the Tool Evaluation and Improvement Experts Group under the International Energy Agency (IEA) Solar Heating and Cooling Programme Task 22.

Neymark J.; Judkoff, R.

2004-12-01T23:59:59.000Z

139

Improving fuzzy logic controllers obtained by experts: a case study in HVAC systems  

Science Conference Proceedings (OSTI)

One important Artificial Intelligence tool for automatic control is the use of fuzzy logic controllers, which are fuzzy rule-based systems comprising expert knowledge in form of linguistic rules. These rules are usually constructed by an expert in the ... Keywords: Fuzzy logic controllers, Genetic tuning, HVAC systems, Linguistic 2-tuples representation, Linguistic 3-tuples representation, Rule selection

Rafael Alcalá; Jesús Alcalá-Fdez; María José Gacto; Francisco Herrera

2009-08-01T23:59:59.000Z

140

Automatic two way synchronization between server and multiple clients for HVAC system  

Science Conference Proceedings (OSTI)

The authors study different two way synchronization methods between a server and distributed clients. Client-server architectures are used to control multiple instances from center. Hard-coded embedded controllers are replaced by embedded controllers ... Keywords: HVAC, data synchronization, embedded systems, multi-agent systems, online file storage, thick client

Anton Tyukov; Adriaan Brebels; Maxim Shcherbakov

2011-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac systems volume" 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

OBSERVE: Occupancy-Based System for Efficient Reduction of HVAC Energy  

E-Print Network (OSTI)

control conditioning strategies. Using strategies based on sensor network occupancy model predictions, weOBSERVE: Occupancy-Based System for Efficient Reduction of HVAC Energy Varick L. Erickson, Miguel Á Descriptors I.6.5 [Simulation and Modeling]: Model Development; J.7 [Computers In Other Systems]: Command

Cerpa, Alberto E.

142

Identification of chiller model in HVAC system using fuzzy inference rules with Zadeh's implication operator  

Science Conference Proceedings (OSTI)

In the heating, ventilating, and air-conditioning (HVAC) system, chiller is the central part and one of the primary energy consumers. For the purpose of saving energy, the identification of the chiller model is of great significance. In this paper, based ... Keywords: chiller, fuzzy inference system, implication operator, improved genetic algorithm

Yukui Zhang; Shiji Song; Cheng Wu; Kang Li

2010-09-01T23:59:59.000Z

143

Metro Environmental: The impact of training HVAC technicians using the SightPros-VirTechs system for remote, wireless, Internet video assistance.  

E-Print Network (OSTI)

??This qualitative study explored the overall impact of training HVAC technicians using the SightPros-VirTechs system for remote, wireless, internet video assistance at a small HVAC… (more)

Daily, Ellen Wilmoth Matthews

2008-01-01T23:59:59.000Z

144

Energy Savings with Energy-Efficient HVAC Systems in Commercial Buildings of Hong Kong  

E-Print Network (OSTI)

Hong Kong has seen a dramatic increase in energy consumption in recent years, particularly electricity use in commercial buildings. The growth of electricity demand in future years is crucial both economically and environmentally. As over half of the electricity in Hong Kong is consumed by commercial buildings, and heating, ventilation and air-conditioning (HVAC) is the largest end-user in such buildings, improving the efficiency of HVAC systems in commercial buildings, is the key measure to take in Hong Kong for sustainable development. In this study, the major factors influencing the electricity use of HVAC systems are studied with the building energy simulation program EnergyPlus, which include chiller efficiency, space cooling temperature, variable vs. constant air flow, fan efficiency, lighting intensity and building envelope. From the analysis of the simulation results, it can be found that substantial energy-saving potential exists through improving the efficiency of HVAC systems in commercial buildings, and a combination of desirable system parameters for energy efficiency of commercial building is proposed.

Yang, J.; Chan, K.; Wu, X.

2006-01-01T23:59:59.000Z

145

VENTILATION (HVAC) FAILURE (BUILDING WIDE)  

E-Print Network (OSTI)

VENTILATION (HVAC) FAILURE (BUILDING WIDE) A failure or shutdown of the ventilation system will be signaled by cessation of the audible background "rumbling" sound of the building's HVAC system. As building durations. NOTE: Due to unpredictable pressure differentials in and around the labs during an HVAC failure

Strynadka, Natalie

146

A Simple Path Loss Prediction Model for HVAC Systems O. K. Tonguz, D. D. Stancil, A. E. Xhafa, A. G. Cepni, P. V. Nikitin  

E-Print Network (OSTI)

1 A Simple Path Loss Prediction Model for HVAC Systems O. K. Tonguz, D. D. Stancil, A. E. Xhafa, A, and air conditioning (HVAC) cylindrical ducts in 2.4-2.5 GHz frequency band. The model we propose predicts the average power loss between a transmitter-receiver pair in an HVAC duct network. This prediction model

Stancil, Daniel D.

147

Detection and diagnosis of faults and energy monitoring of HVAC systems with least-intrusive power analysis  

E-Print Network (OSTI)

Faults indicate degradation or sudden failure of equipment in a system. Widely existing in heating, ventilating, and air conditioning (HVAC) systems, faults always lead to inefficient energy consumption, undesirable indoor ...

Luo, Dong, 1966-

2001-01-01T23:59:59.000Z

148

Requirements for Commissioning HVAC Systems Using BEMS and Commissioning the BEMS Itself Based on Questionnaire Surveys  

E-Print Network (OSTI)

In this paper the present status and requirements for commissioning of HVAC Systems using Building Energy Management Systems (BEMS) and commissioning the BEMS itself are investigated and summarized. The information presented is based on the results of the questionnaire and interview survey of experts which was carried out in four countries; Japan, the USA, France and Canada. This paper intends to clarify the requirements and future scope of the above issues by analyzing similarities and differences between the countries.

Yoshida, H.; Vaezi-Nejad, H.; Choiniere, D.; Wang, F.

2004-01-01T23:59:59.000Z

149

Comparative guide to emerging diagnostic tools for large commercial HVAC systems  

Science Conference Proceedings (OSTI)

This guide compares emerging diagnostic software tools that aid detection and diagnosis of operational problems for large HVAC systems. We have evaluated six tools for use with energy management control system (EMCS) or other monitoring data. The diagnostic tools summarize relevant performance metrics, display plots for manual analysis, and perform automated diagnostic procedures. Our comparative analysis presents nine summary tables with supporting explanatory text and includes sample diagnostic screens for each tool.

Friedman, Hannah; Piette, Mary Ann

2001-05-01T23:59:59.000Z

150

COMPARATIVE STUDY AMONG HYBRID GROUND SOURCE HEAT PUMP SYSTEM, COMPLETE GROUND SOURCE HEAT PUMP AND CONVENTIONAL HVAC SYSTEM  

DOE Green Energy (OSTI)

In this paper, a hotel with hybrid geothermal heat pump system (HyGSHP) in the Pensacola is selected and simulated by the transient simulation software package TRNSYS [1]. To verify the simulation results, the validations are conducted by using the monthly average entering water temperature, monthly facility consumption data, and etc. And three types of HVAC systems are compared based on the same building model and HVAC system capacity. The results are presented to show the advantages and disadvantages of HyGSHP compared with the other two systems in terms of energy consumptions, life cycle cost analysis.

Jiang Zhu; Yong X. Tao

2011-11-01T23:59:59.000Z

151

Integrated Heat Pump HVAC Systems for Near-Zero-Energy Homes - Business Case Assessment  

SciTech Connect

The long range strategic goal of the Department of Energy's Building Technologies (DOE/BT) Program is to create, by 2020, technologies and design approaches that enable the construction of net-zero energy homes at low incremental cost (DOE/BT 2005). A net zero energy home (NZEH) is a residential building with greatly reduced needs for energy through efficiency gains, with the balance of energy needs supplied by renewable technologies. While initially focused on new construction, these technologies and design approaches are intended to have application to buildings constructed before 2020 as well resulting in substantial reduction in energy use for all building types and ages. DOE/BT's Emerging Technologies (ET) team is working to support this strategic goal by identifying and developing advanced heating, ventilating, air-conditioning, and water heating (HVAC/WH) technology options applicable to NZEHs. Although the energy efficiency of heating, ventilating, and air-conditioning (HVAC) equipment has increased substantially in recent years, new approaches are needed to continue this trend. Dramatic efficiency improvements are necessary to enable progress toward the NZEH goals, and will require a radical rethinking of opportunities to improve system performance. The large reductions in HVAC energy consumption necessary to support the NZEH goals require a systems-oriented analysis approach that characterizes each element of energy consumption, identifies alternatives, and determines the most cost-effective combination of options. In particular, HVAC equipment must be developed that addresses the range of special needs of NZEH applications in the areas of reduced HVAC and water heating energy use, humidity control, ventilation, uniform comfort, and ease of zoning. In FY05 ORNL conducted an initial Stage 1 (Applied Research) scoping assessment of HVAC/WH systems options for future NZEHs to help DOE/BT identify and prioritize alternative approaches for further development. Eleven system concepts with central air distribution ducting and nine multi-zone systems were selected and their annual and peak demand performance estimated for five locations: Atlanta (mixed-humid), Houston (hot-humid), Phoenix (hot-dry), San Francisco (marine), and Chicago (cold). Performance was estimated by simulating the systems using the TRNSYS simulation engine (Solar Energy Laboratory et al. 2006) in two 1800-ft{sup 2} houses--a Building America (BA) benchmark house and a prototype NZEH taken from BEopt results at the take-off (or crossover) point (i.e., a house incorporating those design features such that further progress towards ZEH is through the addition of photovoltaic power sources, as determined by current BEopt analyses conducted by NREL). Results were summarized in a project report, 'HVAC Equipment Design options for Near-Zero-Energy Homes--A Stage 2 Scoping Assessment', ORNL/TM-2005/194 (Baxter 2005). The 2005 study report describes the HVAC options considered, the ranking criteria used, and the system rankings by priority. Table 1 summarizes the energy savings potential of the highest scoring options from the 2005 study for all five locations. All system options were scored by the ORNL building equipment research team and by William Goetzler of Navigant Consulting. These scores were reviewed by DOE/BT's Residential Integration program leaders and Building America team members. Based on these results, the two centrally ducted integrated heat pump (IHP) systems (air source and ground source versions) were selected for advancement to Stage 2 (Exploratory Development) business case assessments in FY06. This report describes results of these business case assessments. It is a compilation of three separate reports describing the initial business case study (Baxter 2006a), an update to evaluate the impact of an economizer cooling option (Baxter 2006b), and a second update to evaluate the impact of a winter humidification option (Baxter 2007). In addition it reports some corrections made subsequent to release of the first two reports to correct so

Baxter, Van D [ORNL

2007-05-01T23:59:59.000Z

152

Definition: HVAC | Open Energy Information  

Open Energy Info (EERE)

HVAC HVAC Jump to: navigation, search Dictionary.png HVAC An abbreviation for the heating, ventilation, and air-conditioning system; the system or systems that condition air in a building.[1] View on Wikipedia Wikipedia Definition HVAC is the technology of indoor and vehicular environmental comfort. HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. Refrigeration is sometimes added to the field's abbreviation as HVAC&R or HVACR, or ventilating is dropped as in HACR (such as the designation of HACR-rated circuit breakers). HVAC is important in the design of medium to large industrial and office buildings such as skyscrapers and in marine environments such as aquariums, where safe and

153

ZonePAC: Zonal Power Estimation and Control via HVAC Metering and Occupant Feedback  

Science Conference Proceedings (OSTI)

Heating Ventillation and Air Conditioning (HVAC) systems account for nearly 40% of primary energy consumption by commercial buildings. Yet, these systems by and large operate in an open-loop with the building occupants. While the monitoring and feedback ... Keywords: Energy Estimation, HVAC, Thermostat, User Interface, Variable Air Volume

Bharathan Balaji, Hidetoshi Teraoka, Rajesh Gupta, Yuvraj Agarwal

2013-11-01T23:59:59.000Z

154

Fault Detection and Diagnosis in Building HVAC Systems  

E-Print Network (OSTI)

in AHU of VAV system”, Energy Conversion & Management, 30.energy efficient building management system”, Energy Conversionenergy efficient building management system”, Energy Conversion

Najafi, Massieh

2010-01-01T23:59:59.000Z

155

Energy Savings Potential of Flexible and Adaptive HVAC Distribution Systems for Office Buildings  

Science Conference Proceedings (OSTI)

It has been understood by architects and engineers that office buildings with easily re-configurable space and flexible mechanical and electrical systems are able to provide comfort that increases worker productivity while using less energy. Raised floors are an example of how fresh air, thermal conditioning, lighting needs, and network access can be delivered in a flexible manner that is not ''embedded'' within the structure. What are not yet documented is how well these systems perform and how much energy they can save. This area is being investigated in phased projects of the 21st Century Research Program of the Air-conditioning and Refrigeration Technology Institute. For the initial project, research teams at the Center for Building Performance and Diagnostics, Pittsburgh, Pennsylvania, and Oak Ridge National Laboratory, Oak Ridge, Tennessee, documented the diversity, performance, and incidence of flexible and adaptive HVAC systems. Information was gathered worldwide from journal and conference articles, case studies, manufactured products and assemblies, and interviews with design professionals. Their report thoroughly describes the variety of system types along with the various design alternatives observed for plenums, diffusers, individual control, and system integration. Many of the systems are illustrated in the report and the authors provide quantitative and qualitative comparisons. Among conclusions regarding key design issues, and barriers to widespread adoption, the authors state that flexible and adaptive HVAC systems, such as underfloor air, perform as well if not better than ceiling-based systems. Leading engineers have become active proponents after their first experience, which is resulting in these flexible and adaptive HVAC systems approaching 10 percent of the new construction market. To encourage adoption of this technology that improves thermal comfort and indoor air quality, follow-on work is required to further document performance. Architects, professional engineers, and commercial real estate developers will benefit from the availability of information that quantifies energy savings, first cost construction differences, and additional operating costs created when office space must be reconfigured to accommodate new tenants.

Loftness, Vivian; Brahme, Rohini; Mondazzi, Michelle; Vineyard, Edward; MacDonald, Michael

2002-06-01T23:59:59.000Z

156

Comparison of emerging diagnostic tools for large commercial HVAC systems  

E-Print Network (OSTI)

contracting, design decision information, fan benchmarking,Fan Systems (UCB Tools), University of California at Berkeley, Center for Environmental Design

Friedman, Hannah; Piette, Mary Ann

2001-01-01T23:59:59.000Z

157

Plutonium Finishing Plant (PFP) HVAC System Component Index  

Science Conference Proceedings (OSTI)

The Plutonium Finishing Plant (PFP) WAC System includes sub-systems 25A through 25K. Specific system boundaries and justifications are contained in HNF-SD-CP-SDD-005, ''Definition and Means of Maintaining the Ventilation System Confinement Portion of the PFP Safety Envelope.'' The procurement requirements associated with the system necessitates procurement of some system equipment as Commercial Grade Items in accordance with HNF-PRO-268, ''Control of Purchased Items and Services.'' This document lists safety class and safety significant components for the Heating Ventilation Air Conditioning and specifies the critical characteristics for Commercial Grade Items, as required by HNF-PRO-268 and HNF-PRO-1819. These are the minimum specifications that the equipment must meet in order to properly perform its safety function. There may be several manufacturers or models that meet the critical characteristics for any one item.

DICK, J.D.

2000-02-28T23:59:59.000Z

158

Modeling and control of hydronic building HVAC systems.  

E-Print Network (OSTI)

??Energy requirements for heating and cooling of residential, commercial and industrial spaces constitute a major fraction of end use energy consumed. Centralized systems such as… (more)

Chandan, Vikas

2010-01-01T23:59:59.000Z

159

Decentralized model predictive control of a multiple evaporator HVAC system.  

E-Print Network (OSTI)

??Vapor compression cooling systems are the primary method used for refrigeration and air conditioning, and as such are a major component of household and commercial… (more)

Elliott, Matthew Stuart

2009-01-01T23:59:59.000Z

160

Software-as-a-Service Optimised Scheduling of a Solar-Assisted HVAC System  

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

Software-as-a-Service Optimised Scheduling of a Solar-Assisted HVAC System Software-as-a-Service Optimised Scheduling of a Solar-Assisted HVAC System with Thermal Storage Title Software-as-a-Service Optimised Scheduling of a Solar-Assisted HVAC System with Thermal Storage Publication Type Conference Proceedings Refereed Designation Refereed LBNL Report Number LBNL-6127E Year of Publication 2013 Authors Mammoli, Andrea, Michael Stadler, Nicholas DeForest, Hans Barsun, Richard Burnett, and Chris Marnay Conference Name 3rd International Conference on Microgeneration and Related Technologies Date Published 04/2013 Conference Location Naples, Italy Keywords absorption cooling, mixed integer programming, optimisation, software-as-a-service, thermal storage Abstract The UNM Mechanical Engineering HVAC system incorporates cooling assisted by a 232 m2 solar thermal array providing heat to a 70 kWthermal absorption chiller. A 30 m3 heat storage tank solar decouples heat production and absorption cooling. Additionally, 350 m3 of chilled water storage shifts the cooling electrical load of this high desert location off-peak. While this system already provides substantial energy and cost savings compared to similar conventional buildings, there are still opportunities for improvement. Absorption cooling (augmented by an electrically powered central cooling loop) suffers from parasitic electric loads from a cooling tower pump, a cooling tower fan, and hot and chilled water circulation pumps. Moreover, depending on seasonal, weather, occupancy, and cost conditions, the cold storage tanks may only need partial charging to meet the next day's net building load, and losses need to be considered. Optimally operating this complex thermal-electrical system poses a challenging mathematical problem. A model of the system was built on LBNL's Distributed Resources Customer Adoption Model (DER-CAM) platform. A direct interface between the building energy control system, and DER-CAM hosted on LBNL's server was developed. This interface delivers daily scheduling based on weather forecasts, tariffs, etc., to the building controller. It is found that energy cost savings can be proportionally substantial (almost 30%) - although in this case the payback period for system implementation is long, due to the very low energy consumption of the building. Also, it is found that accurate weather forecasting is a key ingredient of the optimization, although local biases can be corrected for in the optimization.

Note: This page contains sample records for the topic "hvac systems volume" 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

Proposal for the award of a contract for the design, supply, installation and commissioning of Heating, Ventilation and Air-Conditioning (HVAC) systems for the PS accelerator infrastructure  

E-Print Network (OSTI)

Proposal for the award of a contract for the design, supply, installation and commissioning of Heating, Ventilation and Air-Conditioning (HVAC) systems for the PS accelerator infrastructure

2012-01-01T23:59:59.000Z

162

Proposal for the award of a contract for dismantling, removal and packaging of the existing Heating, Ventilation and Air-Conditioning (HVAC) systems in the PS tunnel  

E-Print Network (OSTI)

Proposal for the award of a contract for dismantling, removal and packaging of the existing Heating, Ventilation and Air-Conditioning (HVAC) systems in the PS tunnel

2012-01-01T23:59:59.000Z

163

Residential commissioning to assess envelope and HVAC system performance  

E-Print Network (OSTI)

qualitatively during air-sealing work to assess progresssealing or for separation of the supply and return systems at the airby poor sealing or seal failure during the test. Air leakage

Wray, Craig P.; Sherman, Max H.

2001-01-01T23:59:59.000Z

164

Building HVAC Requirements Overview Page 4-1 4 Building HVAC Requirements  

E-Print Network (OSTI)

Building HVAC Requirements ­ Overview Page 4-1 4 Building HVAC Requirements 4.1 Overview 4 conditioning (HVAC) systems. The requirements are presented in this chapter so that it may serve as a single. 2008 Residential Compliance Manual August 2009 #12;Page 4-2 Building HVAC Requirements ­ Overview 4

165

A Qualitive Modeling Approach for Fault Detection and Diagnosis on HVAC Systems  

E-Print Network (OSTI)

This paper describes the basics and first test results of a model based approach using qualitative modeling to perform Fault Detection and Diagnostics (FDD) on HVAC and R systems. A quantized system describing the qualitative behavior of a dynamical system is established by transforming numerical inputs into qualitative values or states. Then, the qualitative model is used to determine system-states or outputs that may occur in the future. The qualitative model determines the probability that a subsequent condition might occur. The model can then be used for FDD purposes by comparing the expected states of the faultless system with the occurring states of the real process. The paper presents the first results of the model, trained with measurement data of an air handling unit (AHU) heating coil. The authors plan to extend the model to further AHU components and to test them against real data to assess their performance for FDD and their economic viability in terms of engineering efforts and costs by comparing them with a rule-based FDD system. It is then planned to implement and test the models on several large HVAC and R systems operating at two major European airports in the framework of the FP7 European project CASCADE ICT for Energy Efficient Airports.

Muller, T.; Rehault, N.; Rist, T.

2013-01-01T23:59:59.000Z

166

Comparison of emerging diagnostic tools for large commercial HVAC systems  

SciTech Connect

Diagnostic software tools for large commercial buildings are being developed to help detect and diagnose energy and other performance problems with building operations. These software applications utilize energy management control system (EMCS) trend log data. Due to the recent development of diagnostic tools, there has been little detailed comparison among the tools and a limited awareness of tool capabilities by potential users. Today, these diagnostic tools focus mainly on air handlers, but the opportunity exists for broadening the scope of the tools to include all major parts of heating, cooling, and ventilation systems in more detail. This paper compares several tools in the following areas: (1) Scope, intent, and background; (2) Data acquisition, pre-processing, and management; (3) Problems detected; (4) Raw data visualization; (5) Manual and automated diagnostic methods and (6) Level of automation. This comparison is intended to provide practitioners and researchers with a picture of the current state of diagnostic tools. There is tremendous potential for these tools to help improve commercial building energy and non-energy performance.

Friedman, Hannah; Piette, Mary Ann

2001-04-06T23:59:59.000Z

167

COMPREHENSIVE DIAGNOSTIC AND IMPROVEMENT TOOLS FOR HVAC-SYSTEM INSTALLATIONS IN LIGHT COMMERCIAL BUILDINGS  

SciTech Connect

Proctor Engineering Group, Ltd. (PEG) and Carrier-Aeroseal LLP performed an investigation of opportunities for improving air conditioning and heating system performance in existing light commercial buildings. Comprehensive diagnostic and improvement tools were created to address equipment performance parameters (including airflow, refrigerant charge, and economizer operation), duct-system performance (including duct leakage, zonal flows and thermal-energy delivery), and combustion appliance safety within these buildings. This investigation, sponsored by the National Energy Technology Laboratory, a division of the U.S. Department of Energy, involved collaboration between PEG and Aeroseal in order to refine three technologies previously developed for the residential market: (1) an aerosol-based duct sealing technology that allows the ducts to be sealed remotely (i.e., without removing the ceiling tiles), (2) a computer-driven diagnostic and improvement-tracking tool for residential duct installations, and (3) an integrated diagnosis verification and customer satisfaction system utilizing a combined computer/human expert system for HVAC performance. Prior to this work the aerosol-sealing technology was virtually untested in the light commercial sector--mostly because the savings potential and practicality of this or any other type of duct sealing had not been documented. Based upon the field experiences of PEG and Aeroseal, the overall product was tailored to suit the skill sets of typical HVAC-contractor personnel.

Abram Conant; Mark Modera; Joe Pira; John Proctor; Mike Gebbie

2004-10-31T23:59:59.000Z

168

A Unified and Integrated Energy Management System for HVAC Spaces and Power House  

E-Print Network (OSTI)

This paper describes a totally integrated energy management system throughout the plant and facilities. The equipment involves: the power plant (boilers, cogeneration turbines, chillers); HVAC of buildings; air handling and other distribution systems. The energy management system has the architecture for data transmission and processing including multilevel control and optimization through the plant and buildings. The key step in this work is to interface the power plant control and management system with the rest, under a unified energy management concept. The main advantages of the system has been: (i) the ability to optimize and coordinate the overall operation, (ii) to control the feedback loops for their optimum operation, (iii) to communicate between the levels of control hierarchy, all from the same operator station, and (iv) provide the high reliability and availability of the system.

Kaya, A.; Debban, G. D.

1988-09-01T23:59:59.000Z

169

Best Practices for Energy Efficient Cleanrooms Efficient HVAC Systems: Variable-Speed-Drive Chillers  

E-Print Network (OSTI)

the portion of chiller energy usage was significant. It is,Figure 1. Benchmarked HVAC energy usages in a semiconductor2. Benchmarked cleanroom energy usages in a semiconductor

Xu, Tengfang

2005-01-01T23:59:59.000Z

170

CALIFORNIA ENERGY Small HVAC Database Of Monitored  

E-Print Network (OSTI)

CALIFORNIA ENERGY COMMISSION Small HVAC Database Of Monitored Information Database of Compiled of the Integrated Design of Small Commercial HVAC Systems research project. The reports are a result of funding: Productivity and Interior Environments Integrated Design of Large Commercial HVAC Systems Integrated Design

171

CALIFORNIA ENERGY Small HVAC Problems and Potential  

E-Print Network (OSTI)

CALIFORNIA ENERGY COMMISSION Small HVAC Problems and Potential Savings Reports Summary of Problems of the Integrated Design of Small Commercial HVAC Systems research project. The reports are a result of funding: Productivity and Interior Environments Integrated Design of Large Commercial HVAC Systems Integrated Design

172

HVAC Equipment Design Options for Near-Zero-Energy Homes - Scoping Assessment of Radiant Panel Distribution System Options  

Science Conference Proceedings (OSTI)

Although the energy efficiency of heating, ventilating, and air-conditioning (HVAC) equipment has increased substantially in recent years, new approaches are needed to continue this trend. Conventional unitary equipment and system designs have matured to a point where cost-effective, dramatic efficiency improvements that meet near-zero-energy housing (NZEH) goals require a radical rethinking of opportunities to improve system performance. The large reductions in HVAC energy consumption necessary to support the NZEH goals require a systems-oriented analysis approach that characterizes each element of energy consumption, identifies alternatives, and determines the most cost-effective combination of options. In particular, HVAC equipment must be developed that addresses the range of special needs of NZEH applications in the areas of reduced HVAC and water heating energy use, humidity control, ventilation, uniform comfort, and ease of zoning. In FY05, ORNL conducted a scoping-level assessment of HVAC system options for NZEH homes (Baxter 2005). That report examined some twenty HVAC and water heating (HVAC/WH) systems in two 1800 ft2 houses--one constructed to Building America Research Benchmark standards and one a prototype NZEH. Both centrally ducted and two-zone systems were examined in that study. The highest scoring options using the ranking criteria described in that report were air-source and ground-source integrated heat pumps (IHP), and these were selected by DOE for further development. Among the feedback received to the FY05 report was a comment that systems using radiant panel (floor or ceiling) distribution options were not included among the system examined. This present report describes an assessment of a few such radiant panel systems under the same analysis and ranking criteria used in Baxter (2005). The rankings of the radiant system options reported herein are based on scoring by the team of building equipment researchers at ORNL. It is DOE's prerogative to revisit the criteria and obtain scoring from additional perspectives as part of its decision making process. If the criteria change, the ORNL team will be happy to re-score.

Baxter, Van David [ORNL

2007-06-01T23:59:59.000Z

173

Considering lighting system performance and HVAC interactions in lighting retrofit analyses  

SciTech Connect

The performance of several typical fluorescent lighting retrofits are examined using analysis methods of varying sophistication. Estimates of energy and lighting performance based on the simple non-application specific data generally available tend to overestimate the energy savings obtained with the various retrofits by 10-30%. Adding a simple correction to account for cooling benefits exacerbates the error unless heating penalties are also considered. An analysis method that takes into account the thermal application factor of the lighting system shows that the error is typically due to systematically overestimating the energy usage of the original lighting system. If thermal application factor is considered, then detailed HVAC calculations do not significantly improve the energy-savings estimate.

Franconi, E.; Rubinstein, F.

1991-10-01T23:59:59.000Z

174

Value impact analysis of Generic Issue 143, Availability of Heating, Ventilation, Air Conditioning (HVAC) and Chilled Water Systems  

Science Conference Proceedings (OSTI)

This study evaluates the values (benefits) and impacts (costs) associated with potential resolutions to Generic Issue 143, ``Availability of HVAC and Chilled Water Systems.`` The study identifies vulnerabilities related to failures of HVAC, chilled water, and room cooling systems; develops estimates of room heatup rates and safety-related equipment vulnerabilities following losses of HVAC/room cooler systems; develops estimates of the core damage frequencies and public risks associated with failures of these systems; develops three proposed resolution strategies to this generic issue; and performs a value/impact analysis of the proposed resolutions. Existing probabilistic risk assessments for four representative plants, including one plant from each vendor, form the basis for the core damage frequency and public risk calculations. Both internal and external events were considered. It was concluded that all three proposed resolution strategies exceed the $1,000/person-rem cost-effectiveness ratio. Additional evaluations were performed to develop ``generic`` insights on potential design-related and configuration-related vulnerabilities and potential high-frequency ({approximately}1E-04/RY) accident sequences that involve failures of HVAC/room cooling functions. It was concluded that, although high-frequency accident sequences may exist at some plants, these high-frequency sequences are plant-specific in nature or have been resolved through hardware and/or operational changes. The plant-specific Individual Plant Examinations are an effective vehicle for identification and resolution of these plant-specific anomalies and hardware configurations.

Daling, P.M.; Marler, J.E.; Vo, T.V.; Phan, H.; Friley, J.R. [Pacific Northwest Lab., Richland, WA (United States)

1993-11-01T23:59:59.000Z

175

CALIFORNIA ENERGY Large HVAC Field and Baseline Data  

E-Print Network (OSTI)

CALIFORNIA ENERGY COMMISSION Large HVAC Field and Baseline Data Field Data Collection: Site Survey of the Integrated Design of Large Commercial HVAC Systems research project. The reports are a result of funding Design of Large Commercial HVAC Systems Integrated Design of Small Commercial HVAC Systems Integrated

176

PROJECT REPORT HVAC EQUIPMENT DEMOGRAPHICS AND CAPACITY  

E-Print Network (OSTI)

PROJECT REPORT HVAC EQUIPMENT DEMOGRAPHICS AND CAPACITY ANALYSIS TOOLS APPLICABLE TO MULTI Commercial HVAC Design Process 12 5.0 Conclusion 18 6.0 References 19 TABLE OF CONTENTS SECTIONS #12;MULTI performance by collectively improving the enve- lope, lighting and HVAC systems. The primary goals of the UC

California at Davis, University of

177

DEMONSTRATION OF A HYBRID INTELLIGENT CONTROL STRATEGY FOR CRITICAL BUILDING HVAC SYSTEMS  

SciTech Connect

Many industrial facilities utilize pressure control gradients to prevent migration of hazardous species from containment areas to occupied zones, often using Proportional-Integral-Derivative (PID) control. Within these facilities, PID control is often inadequate to maintain desired performance due to changing operating conditions. As the goal of the Heating, Ventilation and Air-Conditioning (HVAC) control system is to optimize the pressure gradients and associated flows for the plant, Linear Quadratic Tracking (LQT) provides a time-based approach to guiding plant interactions. However, LQT methods are susceptible to modeling and measurement errors, and therefore a hybrid design using the integration of soft control methods with hard control methods is developed and demonstrated to account for these errors and nonlinearities.

Craig Rieger; D. Subbaram Naidu

2010-06-01T23:59:59.000Z

178

HVAC Improvements for Existing Houses  

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

HVAC Improvements for Existing Houses HVAC Improvements for Existing Houses Speaker(s): Chryséis Bovagnet Date: September 5, 2002 - 12:00pm Location: Bldg. 90 Many older houses in the US are either not well designed from a thermal point of view or have HVAC (Heating Ventilation and Air Conditioning) systems in need of repairs or improvements. The building envelopes tend to have poor insulation and lots of leakage, and the HVAC systems are inefficient. The cooling/heating equipment is often located outside of the conditioned space (e.g. in attics or crawlspaces) with ducts that leak and have poor insulation, which cause energy loss and bad occupant comfort on peak days or in extreme climates. We developed a series of retrofits that will allow us to reduce the energy consumption of residential HVAC

179

Strategy Guideline: HVAC Equipment Sizing  

SciTech Connect

The heating, ventilation, and air conditioning (HVAC) system is arguably the most complex system installed in a house and is a substantial component of the total house energy use. A right-sized HVAC system will provide the desired occupant comfort and will run efficiently. This Strategy Guideline discusses the information needed to initially select the equipment for a properly designed HVAC system. Right-sizing of an HVAC system involves the selection of equipment and the design of the air distribution system to meet the accurate predicted heating and cooling loads of the house. Right-sizing the HVAC system begins with an accurate understanding of the heating and cooling loads on a space; however, a full HVAC design involves more than just the load estimate calculation - the load calculation is the first step of the iterative HVAC design procedure. This guide describes the equipment selection of a split system air conditioner and furnace for an example house in Chicago, IL as well as a heat pump system for an example house in Orlando, Florida. The required heating and cooling load information for the two example houses was developed in the Department of Energy Building America Strategy Guideline: Accurate Heating and Cooling Load Calculations.

Burdick, A.

2012-02-01T23:59:59.000Z

180

Aging assessment of essential HVAC chillers used in nuclear power plants. Phase 1, Volume 1  

SciTech Connect

The Pacific Northwest Laboratory conducted a Phase I aging assessment of chillers used in the essential safety air-conditioning systems of nuclear power plants. Centrifugal chillers in the 75- to 750-ton refrigeration capacity range are the predominant type used. The chillers used, and air-conditioning systems served, vary in design from plant-to-plant. It is crucial to keep chiller internals very clean and to prevent the leakage of water, air, and other contaminants into the refrigerant containment system. Periodic operation on a weekly or monthly basis is necessary to remove moisture and noncondensable gases that gradually build up inside the chiller. This is especially desirable if a chiller is required to operate only as an emergency standby unit. The primary stressors and aging mechanisms that affect chillers include vibration, excessive temperatures and pressures, thermal cycling, chemical attack, and poor quality cooling water. Aging is accelerated by moisture, non-condensable gases (e.g., air), dirt, and other contamination within the refrigerant containment system, excessive start/stop cycling, and operating below the rated capacity. Aging is also accelerated by corrosion and fouling of the condenser and evaporator tubes. The principal cause of chiller failures is lack of adequate monitoring. Lack of performing scheduled maintenance and human errors also contribute to failures.

Blahnik, D.E.; Klein, R.F. [Pacific Northwest Lab., Richland, WA (United States)

1993-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac systems volume" 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

Project W-320, 241-C-106 sluicing HVAC calculations, Volume 1  

SciTech Connect

This supporting document has been prepared to make the FDNW calculations for Project W-320, readily retrievable. The report contains the following calculations: Exhaust airflow sizing for Tank 241-C-106; Equipment sizing and selection recirculation fan; Sizing high efficiency mist eliminator; Sizing electric heating coil; Equipment sizing and selection of recirculation condenser; Chiller skid system sizing and selection; High efficiency metal filter shielding input and flushing frequency; and Exhaust skid stack sizing and fan sizing.

Bailey, J.W.

1998-08-07T23:59:59.000Z

182

Analysis of Innovative HVAC System Technologies and Their Application for Office Buildings in Hot and Humid Climates  

E-Print Network (OSTI)

ABSTRACT Analysis of Innovative HVAC System Technologies and Their Application for Office Buildings in Hot and Humid Climates. (December 2010) Oleksandr Tanskyi, B.S., National Technical University of Ukraine; M.S., National Technical University of Ukraine Co-Chairs of Advisory Committee: Dr. David E. Claridge Dr. Michael B. Pate The commercial buildings sector in the United States used 18% (17.93 Quads) of the U.S. primary energy in 2006. Office buildings are the largest single energy consumption category in the commercial buildings sector of the United States with annual energy consumption around 1.1 Quads. Traditional approaches used in commercial building designs are not adequate to save energy in both depth and scale. One of the most effective ways to reduce energy consumption is to improve energy performance of HVAC systems. High-performance HVAC systems and components, as well as application of renewable energy sources, were surveyed for buildings in hot and humid climates. An analysis of performance and energy saving potential estimation for selected HVAC systems in hot and humid climates was developed based on energy consumption simulation models in DOE-2.1E. A calibrated energy consumption model of an existing office building located in the hot and humid climate conditions of Texas was developed. Based on this model, the energy saving potential of the building was estimated. In addition, energy consumption simulation models were developed for a new office building, including simulation of energy saving measures that could be achieved with further improvements of HVAC system above the energy conservation codes requirements. The theoretical minimum energy consumption level for the same office building was estimated for the purpose of evaluating the whole building energy efficiency level. The theoretical minimum energy consumption model of the office building was designed to provide the same level of comfort and services to the building occupants as provided in the actual building simulation model. Finally, the energy efficiency of the building that satisfies valid energy conservation codes and the building with an improved HVAC system was estimated based on theoretically minimum energy consumption level. The analysis provided herein can be used for new building practitioners and existing building owners to evaluate energy reduction potential and the performance of innovative technologies such as dedicated outdoor air system, displacement ventilation, improved cooling system efficiency, air source heat pumps and natural gas heat pumps.

Tanskyi, Oleksandr

2010-12-01T23:59:59.000Z

183

Control Systems and Applications for HVAC/R, 1st edition  

Science Conference Proceedings (OSTI)

From the Publisher:Unique in combining into one book, the operational and selection characteristics of commonly used control devices with the thermal and response characteristics of HVAC processes. It presents step-by-step techniques for analyzing the ...

Thomas J. Horan

1996-10-01T23:59:59.000Z

184

2013 Energy Code Changes That Effect the HVAC  

E-Print Network (OSTI)

2013 Energy Code Changes That Effect the HVAC Industry Tav Commins Mechanical Engineer California Energy Commission #12;HVAC Mandatory Measures For All Newly Installed Residential HVAC Systems (New Watt Draw at .58 W/CFM, or (return duct and filter sizing) MERV 6 Filter #12;Residential HVAC Measures

California at Davis, University of

185

Model Code for the Control of Residential HVAC Distribution System Leakage and HVAC-Induced Building Leakage  

E-Print Network (OSTI)

Modifications to local and state codes are seen as an appropriate strategy for the prevention of residential air distribution system leakage and its impacts. A model code element has been developed to assist this strategy. Recent field studies of Florida residences by Cummings, Tooley and Moyer have revealed a mean leakage of 11 percent for the air distribution systems of central, fan-force heating and air conditioning systems. Such leakage may cause an estimated 20 percent increase in energy consumption for air conditioning, as well as a 50 percent increase in peak cooling load and an 80 percent increase in peak heating load. In addition, building air leakage may be expected to be several times greater when duct leakage is present or when avenues of air egress from closeable rooms are absent. The model duct construction element presented here contains all of the standards, definitions and code language needed to replace the current duct construction element of the local or state code. The content of this paper was used as a principal source for language adopted for the 1991 Florida Energy Efficiency Code For Building Construction. Addressed are the most appropriate standards required for the closure and sealing of metal duct, rigid fibrous glass duct, and nonmetallic flexible duct. Also addressed are (1) detailed requirements for the sealing of mechanical closets when they function as plenum chambers, (2) detailed requirements for the sealing of enclosed support platforms or air handlers and furnaces when they function as return duct, (3) detailed requirements for the sealing of uninhabitable cavities of the building structure, when they function as duct, and (4) detailed requirements for the egress of air from enclosed rooms which receive supply air. Where necessary, commentary is provided to explain the options available for implementing the model code provision as well as its ramifications. All provisions of this model code are compatible with the requirements, standards and guidelines contained in related documents published by the following organizations: the Southern Building Code Congress International, Inc., the Sheet Metal and Air Conditioning Contractors National Association, the American Society of Heating, Refrigerating and Air conditioning Engineers, Underwriters Laboratories, Inc., the Air Conditioning Contractors Of America, the Thermal Insulation Manufacturers Association, the National Fire Protection Association, and the Gypsum Association.

Wemhoff, P.

1990-01-01T23:59:59.000Z

186

Building Energy Software Tools Directory : HVAC Solution  

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

HVAC Solution Back to Tool Screenshot for HVAC Solution. Screenshot for HVAC Solution. Screenshot for HVAC Solution...

187

Proper Setup of HVAC System in Conjunction with Sound Building 'Skin' Design for Alleviation of IAQ and Energy Performance Problems  

E-Print Network (OSTI)

Energy consumption in buildings is a growing concern. Many buildings are energy hogs simply because they were not set up properly to begin with. The building envelope and infiltration of unconditioned air is also a major concern in hot and humid climates, not only because of the loss of energy, but also because of damage that can result to insulation, drywall, and structure in addition to promotion of mold and mildew growth. Proper setup of the HVAC system, in conjunction with sound building “skin” design, can alleviate many of these problems. This paper will explain how most mixed air HVAC systems are set up with problems to begin with and how to identify and solve those problems. It will explain different control schemes that specifically deal with proper building pressurization

Rosenberg, M.

2006-01-01T23:59:59.000Z

188

Initial Business Case Analysis of Two Integrated Heat Pump HVAC Systems for Near-Zero-Energy Homes  

SciTech Connect

The long range strategic goal of the Department of Energy's Building Technologies (DOE/BT) Program is to create, by 2020, technologies and design approaches that enable the construction of net-zero energy homes at low incremental cost (DOE/BT 2005). A net zero energy home (NZEH) is a residential building with greatly reduced needs for energy through efficiency gains, with the balance of energy needs supplied by renewable technologies. While initially focused on new construction, these technologies and design approaches are intended to have application to buildings constructed before 2020 as well resulting in substantial reduction in energy use for all building types and ages. DOE/BT's Emerging Technologies (ET) team is working to support this strategic goal by identifying and developing advanced heating, ventilating, air-conditioning, and water heating (HVAC/WH) technology options applicable to NZEHs. Although the energy efficiency of heating, ventilating, and air-conditioning (HVAC) equipment has increased substantially in recent years, new approaches are needed to continue this trend. Dramatic efficiency improvements are necessary to enable progress toward the NZEH goals, and will require a radical rethinking of opportunities to improve system performance. The large reductions in HVAC energy consumption necessary to support the NZEH goals require a systems-oriented analysis approach that characterizes each element of energy consumption, identifies alternatives, and determines the most cost-effective combination of options. In particular, HVAC equipment must be developed that addresses the range of special needs of NZEH applications in the areas of reduced HVAC and water heating energy use, humidity control, ventilation, uniform comfort, and ease of zoning. In FY05 ORNL conducted an initial Stage 1 (Applied Research) scoping assessment of HVAC/WH systems options for future NZEHs to help DOE/BT identify and prioritize alternative approaches for further development. Eleven system concepts with central air distribution ducting and nine multi-zone systems were selected and their annual and peak demand performance estimated for five locations: Atlanta (mixed-humid), Houston (hot-humid), Phoenix (hot-dry), San Francisco (marine), and Chicago (cold). Performance was estimated by simulating the systems using the TRNSYS simulation engine (Solar Energy Laboratory et al. 2006) in two 1800-ft{sup 2} houses--a Building America (BA) benchmark house and a prototype NZEH taken from BEopt results at the take-off (or crossover) point (i.e., a house incorporating those design features such that further progress towards ZEH is through the addition of photovoltaic power sources, as determined by current BEopt analyses conducted by NREL). Results were summarized in a project report, 'HVAC Equipment Design options for Near-Zero-Energy Homes--A Stage 2 Scoping Assessment,' ORNL/TM-2005/194 (Baxter 2005). The 2005 study report describes the HVAC options considered, the ranking criteria used, and the system rankings by priority. Table 1 summarizes the energy savings potential of the highest scoring options from the 2005 study for all five locations.

Baxter, Van D [ORNL

2006-11-01T23:59:59.000Z

189

Field Evaluation of Desiccant-Integrated HVAC Systems: A Review of Case Studies in Multiple Commercial/Institutional Building Types  

E-Print Network (OSTI)

An independent field research effort co-funded by the Gas Research Institute and The U.S. Department of Energy (DOE) Oak Ridge National Laboratory is documenting the performance and energy usage characteristics of active desiccant-integrated HVAC systems at a variety of commercial and institutional facilities. The tests comprise the instrumentation and one-year-plus monitoring of two or more nearly identical sites, one serving as the test site and the others as base-case or control sites. While the research program is ongoing, work completed in two market sectors, retail and lodging, indicates that there are significant comfort control, energy usage and equipment efficiency benefits to be derived from integrating desiccant units into HVAC system design to handle latent and sensible loads independently. In some cases, installed first costs associated with including desiccant units may be lower if the HVAC system is optimized to take advantage of reduced conventional cooling equipment requirements and downsized ductwork In most cases, lower energy consumption and/or reduced energy costs may provide reasonable payback of first cost premiums.

Yborra, S. C.

1998-01-01T23:59:59.000Z

190

HVAC Testing, Adjusting, and Balancing Guideline  

Science Conference Proceedings (OSTI)

This report provides practical guidelines that can be used by power plant personnel to diagnose and troubleshoot heating, ventilating, and air conditioning (HVAC) system and component performance problems.

2001-10-24T23:59:59.000Z

191

Columbia Water & Light- Residential HVAC Rebate Program  

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

Columbia Water & Light (CWL) provides an HVAC incentive for residential customers that are replacing an older heating and cooling system. Customers should submit the mechanical permit from a...

192

Precision volume measurement system.  

Science Conference Proceedings (OSTI)

A new precision volume measurement system based on a Kansas City Plant (KCP) design was built to support the volume measurement needs of the Gas Transfer Systems (GTS) department at Sandia National Labs (SNL) in California. An engineering study was undertaken to verify or refute KCP's claims of 0.5% accuracy. The study assesses the accuracy and precision of the system. The system uses the ideal gas law and precise pressure measurements (of low-pressure helium) in a temperature and computer controlled environment to ratio a known volume to an unknown volume.

Fischer, Erin E.; Shugard, Andrew D.

2004-11-01T23:59:59.000Z

193

HVAC Technician | Princeton Plasma Physics Lab  

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

HVAC Technician HVAC Technician Department: Facilities Supervisor(s): Tom Ward Staff: L&S 07 Requisition Number: 1300884 Under the supervision of the General Lead Technician and Lead HVAC Technician, the incumbent will be responsible for the installation, preventative maintenance, troubleshooting and repair of various HVAC and refrigeration equipment; local HVAC control systems and ancillary support equipment; and will work with other groups within the Division and throughout the Laboratory to ensure long-term, safe and efficient operation of HVAC and refrigeration systems. All tasks must be completed in a timely, cost efficient manner, support on-going sustainability initiatives and energy efficiency programs at the Laboratory. The incumbent is expected to utilize thorough theoretical knowledge and techniques to accomplish

194

Report on HVAC option selections for a relocatable classroom energy and indoor environmental quality field study  

E-Print Network (OSTI)

LBNL- 49026 Report on HVAC Option Selections for aTable 3. High performance HVAC system filter selectionDrop ("H 2 O) Appendix A – RC HVAC working drawings. Figure

2001-01-01T23:59:59.000Z

195

HVAC Room Temperature Prediction Control Based on Neural Network Model  

Science Conference Proceedings (OSTI)

HVAC (Heating Ventilating &Air-conditioning) system is a nonlinear complex system with delay. It is very difficult to build a mathematical model of HVAC and implement model-based control. Since a BP (Back Propagation) neural network can fully approximate ... Keywords: BP neural network, predictive control, HVAC, least squares method

Shujiang Li, Shuang Ren, Xiangdong Wang

2013-01-01T23:59:59.000Z

196

Continuous Energy Management of the HVAC&R System in an Office Building System Operation and Energy Consumption for the Eight Years after Building Completion  

E-Print Network (OSTI)

The authors continuously studied the energy consumption of a heating, ventilating, air- conditioning and refrigerating (HVAC&R) system in an office for the operation of the system in terms of its expected performance. A fault in the system control setting was detected, and the system performance improved significantly as a result of correcting the fault. Recently, however, problematic issues, such as the malfunction of chillers and deteriorated performance of the heat exchangers, have emerged, resulting in the degradation of overall system performance. This paper describes (a) changes in the energy consumption of the building over a period of eight years during which the HVAC&R system was operated, and (b) problematic issues that arose during system operation in order to identify the energy-saving effects of the system found when energy management of the building is continuously practiced. In this HVAC&R system, about 25% of electric power consumption for wintertime could be saved by checking the system operation during the first two years. After that, the electric power consumption gradually increased due to the system deterioration until 2004, but it decreased again by properly dealing with the problems.

Akashi, Y.; Shinozaki, M.; Kusuda, R.; Ito, S.

2006-01-01T23:59:59.000Z

197

Commercial Building HVAC: How it Affects People  

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

Commercial Building HVAC: How it Affects People Commercial Building HVAC: How it Affects People Speaker(s): William Fisk Date: November 13, 2000 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: David Faulkner Commercial building heating, ventilating, and air conditioning (HVAC) systems are designed primarily to maintain a reasonable level of thermal comfort while limiting first costs and energy consumption. However, research conducted predominately within the last decade suggests that commercial building HVAC significantly influences human outcomes other than thermal comfort, including the health, satisfaction, and work performance of the building's occupants. This presentation will review the relationships of these outcomes with HVAC system type, filtration system efficiency, indoor air temperature, and outside air ventilation rate.

198

HVAC Maintenance and Technologies  

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

HVAC - HVAC - Maintenance and Technologies Federal Utility Partnership Working Group Meeting Providence, Rhode Island April 15, 2010 BY Ramin Faramarzi, P.E. Technology Test Centers (TTC) Design and Engineering Services Southern California Edison (SCE) www.sce.com/rttc 2 Outline * Introduction to SCE's TTC * Overview of energy challenges in California (CA) * Role of HVAC in CA's energy and demand equations * Factors affecting HVAC performance * Focus on SCE's research on maintenance faults * Next generation of HVAC equipment * HVAC technologies on SCE's TTC radar * Black boxes - do they all work? 3 SCE's Technology Test Centers * SCE applied research facilities located in Irwindale, CA comprised of 3 test beds: * Refrigeration * HVAC * Lighting * Coming Soon! - A new ZNE lab 4 Refrigeration Testing

199

This paper has been downloaded from the Building and Environmental Thermal Systems Research Group at Oklahoma State University (www.hvac.okstate.edu)  

E-Print Network (OSTI)

systems that circulate a heated fluid through pipes embedded in a bridge deck or roadway may be used such a system is determining the required heat flux. Current guidance in the ASHRAE HVAC Applications Handbook-dimensional effects, such as pipe spacing and bottom losses are clearly important, but neglected by the procedure used

200

Deposition of Biological Aerosols on HVAC Heat Exchangers  

E-Print Network (OSTI)

LBNL-47669 Deposition of Biological Aerosols on HVAC Heat Exchangers Jeffrey Siegel and Iain Walker of Biological Aerosols on HVAC Heat Exchangers Jeffrey A. Siegel Iain S. Walker, Ph.D. ASHRAE Student Member that are found in commercial and residential HVAC systems of 1 - 6 m/s (200 - 1200 ft/min), particle diameters

Note: This page contains sample records for the topic "hvac systems volume" 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

MATERIALS AND INFORMATION FLOWS FOR HVAC DUCTWORK FABRICATION AND SITE  

E-Print Network (OSTI)

MATERIALS AND INFORMATION FLOWS FOR HVAC DUCTWORK FABRICATION AND SITE INSTALLATION Matt Holzemer,1, and air-conditioning (HVAC) systems requires a set of complex activities and handoffs between multiple architecture-, engineering-, and construction practitioners. This paper highlights one part of the HVAC

Tommelein, Iris D.

202

Development Practice in HVAC Controls  

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

Development Practice in HVAC Controls Development Practice in HVAC Controls Speaker(s): John Zhou Date: April 11, 2011 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Philip Haves The presentation will introduce development tools and design considerations used in HVAC controls development. Controls development use simulation, lab testing and field trial at different phases of the project cycle to improve control performance and to achieve rapid development. Development starts with simulation to originate and define algorithm concept. The concept is then implemented in a prototype controller, and tested in lab environment. The concept is refined and verified by analyzing lab results. In the final phase of development, controllers with refined and verified algorithms are installed in field trial sites to ensure system integration and to confirm

203

NREL's Advanced Thermal Conversion Laboratory at the Center for Buildings and Thermal Systems: On the Cutting-Edge of HVAC and CHP Technology (Revised)  

DOE Green Energy (OSTI)

This brochure describes how the unique testing capabilities of NREL's Advanced Thermal Conversion Laboratory at the Center For Buildings and Thermal Systems can help industry meet the challenge of developing the next generation of heating, ventilating, and air-conditioning (HVAC) and combined heat and power (CHP) equipment and concepts.

Not Available

2005-09-01T23:59:59.000Z

204

Residential HVAC Data, Assumptions and Methodology for End-Use Forecasting with EPRI-REEPS 2.1  

E-Print Network (OSTI)

Efficiency Choice 6.3 New Home HVAC System Choice 6.4. NewJuly. EPRI. 1990. REEPS 2.0 HVAC Model Logic, prepared by1990. Review of Equipment HVAC Choice Parameters. Cambridge

Johnson, F.X.

2010-01-01T23:59:59.000Z

205

Evaluation of commercially available techniques and development of simplified methods for measuring grille airflows in HVAC systems  

SciTech Connect

In this report, we discuss the accuracy of flow hoods for residential applications, based on laboratory tests and field studies. The results indicate that commercially available hoods are often inadequate to measure flows in residential systems, and that there can be a wide range of performance between different flow hoods. The errors are due to poor calibrations, sensitivity of existing hoods to grille flow non-uniformities, and flow changes from added flow resistance. We also evaluated several simple techniques for measuring register airflows that could be adopted by the HVAC industry and homeowners as simple diagnostics that are often as accurate as commercially available devices. Our test results also show that current calibration procedures for flow hoods do not account for field application problems. As a result, organizations such as ASHRAE or ASTM need to develop a new standard for flow hood calibration, along with a new measurement standard to address field use of flow hoods.

Walker, Iain S.; Wray, Craig P.; Guillot, Cyril; Masson, S.

2003-08-01T23:59:59.000Z

206

Assessment of organic compound exposures, thermal comfort parameters, and HVAC system-driven air exchange rates in public school portable classrooms in California  

E-Print Network (OSTI)

SPECIFY UNITS) when heat (of HVAC) is turned off?using the heat (from HVAC)? A. B. C. D. January Februaryair conditionmg (from HVAC)? A. B. C. D. January February

Shendell, Derek Garth

2010-01-01T23:59:59.000Z

207

Optimization for the Chilled Water System of HVAC Systems in an Intelligent Building  

Science Conference Proceedings (OSTI)

The energy saving issue of chilled water system in an intelligent building is analyzed from the systematic point of view and an optimum scheduling scheme which can save energy of the system facilities and satisfy the constraints of the real time cold ... Keywords: genetic algorithm, intelligent building, systematic energy saving, chilled water system, optimal scheduling

Ming-hai Li; Qing-chang Ren

2010-12-01T23:59:59.000Z

208

Methodology for design, calibration, system identification and operation of an experimental Hvac system.  

E-Print Network (OSTI)

??It is well known that building control systems rarely function as designed, contributing to excessive energy use and poor environmental control performance. In addition, most… (more)

Cui, Li

2013-01-01T23:59:59.000Z

209

Buildings Energy Data Book: 5.5 Thermal Distribution Systems  

Buildings Energy Data Book (EERE)

Energy Consumption Characteristics of Commercial Building HVAC Systems, Volume II: Thermal Distribution, Auxiliary Equipment, and Ventilation, Oct. 1999, Table A2-12, p. B2-1....

210

Buildings Energy Data Book: 5.5 Thermal Distribution Systems  

Buildings Energy Data Book (EERE)

Energy Consumption Characteristics of Commercial Building HVAC Systems, Volume II: Thermal Distribution, Auxiliary Equipment, and Ventilation, Oct. 1999, Table 4-1, p. 4-4; and...

211

HVAC Fans and Dampers Maintenance Guide  

Science Conference Proceedings (OSTI)

Heating, ventilation, and air conditioning (HVAC) systems serve an important function in nuclear power plants because these systems are responsible for maintaining many environmental conditions throughout the facility. Failure of these components can induce undesirable radiological conditions and stressful working conditions, and can compromise the life of qualified equipment. Some HVAC fan and damper failures are preventable by monitoring operating parameters and performing recommended maintenance activ...

1999-08-26T23:59:59.000Z

212

Comparing maintenance costs of geothermal heat pump systems with other HVAC systems: Preventive maintenance actions and total maintenance costs  

SciTech Connect

Total annual heating, ventilating, and air-conditioning (HVAC) maintenance costs were determined for 20 schools in the Lincoln, Nebraska, Public School District. Each school examined provides cooling to over 70% of its total floor area and relies on one of the following heating and cooling systems to provide the majority of space conditioning: vertical-bore, geothermal heat pumps (GHPs), air-cooled chiller with gas-fired hot water boiler (ACC/GHWB), or water-cooled chiller with gas-fired steam boiler (WCC/GSB). A precursor to this study examined annual costs associated with repair, service, and corrective maintenance activities tracked in a work order database. This follow-up study examines costs associated with preventive maintenance (PM) activities conducted by the district. Annual PM costs were 5.87 {cents}/yr-ft{sup 2} (63.14 {cents}/yr-m{sup 2}) for ACC/GHWB schools, followed by 7.14 {cents}/yr-ft{sup 2} (76.86 {cents}/yr-m{sup 2}) for GHP, 9.82 {cents}/yr-ft{sup 2} (105.39 {cents}/yr-m{sup 2}) for WCC/ GSB, and 12.65 {cents}/yr-ft{sup 2} (136.30 {cents}/yr-m{sup 2}) for WCC/GHWB. The results of the two analyses are combined to produce an estimate of total annual maintenance costs, by system type, for the 20 schools. Total annual maintenance costs were 8.75 {cents}/yr-ft{sup 2} (94.20 {cents}/yr-m{sup 2}) for ACC/GHWB schools, followed by 9.27 {cents}/yr-ft{sup 2} (99.76 {cents}/yr-m{sup 2}) for GHP, 13.54 {cents}/yr-ft{sup 2} (145.49 {cents}/yr-m{sup 2}) for WCC/GSB, and 18.71 {cents}/yr-ft{sup 2} (201.61 {cents}/yr-m{sup 2}) for WCC/GHWB. It should be noted that these costs represent only the trends seen in the maintenance database of the Lincoln School District. Because of differences in the number of schools using each system type, varying equipment age, and the small total number of schools included in the study, the maintenance costs presented here may not be representative of the maintenance costs seen for similar equipment in other locations.

Martin, M.A.; Madgett, M.G.; Hughes, P.J.

2000-07-01T23:59:59.000Z

213

BFRL: HVAC&R - Publications  

Science Conference Proceedings (OSTI)

HVAC&R Equipment Performance Group. Publications. Repeatability of Energy Consumption Test Results for Compact Refrigerators ...

214

Proposal for the award of a contract for the design, supply, installation and commissioning of a Heating, Ventilation and Air-Conditioning (HVAC) system for the computer room of the CERN Control Centre  

E-Print Network (OSTI)

Proposal for the award of a contract for the design, supply, installation and commissioning of a Heating, Ventilation and Air-Conditioning (HVAC) system for the computer room of the CERN Control Centre

2012-01-01T23:59:59.000Z

215

Proposal for the award of a contract for the design, supply, installation and commissioning of a Heating Ventilation and Air Conditioning (HVAC) system for the HIE-ISOLDE infrastructure  

E-Print Network (OSTI)

Proposal for the award of a contract for the design, supply, installation and commissioning of a Heating Ventilation and Air Conditioning (HVAC) system for the HIE-ISOLDE infrastructure

2012-01-01T23:59:59.000Z

216

Ventilation, temperature, and HVAC characteristics in small and medium  

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

Ventilation, temperature, and HVAC characteristics in small and medium Ventilation, temperature, and HVAC characteristics in small and medium commercial buildings in California Title Ventilation, temperature, and HVAC characteristics in small and medium commercial buildings in California Publication Type Journal Article Refereed Designation Refereed Year of Publication 2012 Authors Bennett, Deborah H., William J. Fisk, Michael G. Apte, X. Wu, Amber L. Trout, David Faulkner, and Douglas P. Sullivan Journal Indoor Air Volume 22 Issue 4 Pagination 309-20 Abstract This field study of 37 small and medium commercial buildings throughout California obtained information on ventilation rate, temperature, and heating, ventilating, and air-conditioning (HVAC) system characteristics. The study included seven retail establishments; five restaurants; eight offices; two each of gas stations, hair salons, healthcare facilities, grocery stores, dental offices, and fitness centers; and five other buildings. Fourteen (38%) of the buildings either could not or did not provide outdoor air through the HVAC system. The air exchange rate averaged 1.6 (s.d. = 1.7) exchanges per hour and was similar between buildings with and without outdoor air supplied through the HVAC system, indicating that some buildings have significant leakage or ventilation through open windows and doors. Not all buildings had sufficient air exchange to meet ASHRAE 62.1 Standards, including buildings used for fitness centers, hair salons, offices, and retail establishments. The majority of the time, buildings were within the ASHRAE temperature comfort range. Offices were frequently overcooled in the summer. All of the buildings had filters, but over half the buildings had a filter with a minimum efficiency reporting value rating of 4 or lower, which are not very effective for removing fine particles. PRACTICAL IMPLICATIONS: Most U.S. commercial buildings (96%) are small- to medium-sized, using nearly 18% of the country's energy, and sheltering a large population daily. Little is known about the ventilation systems in these buildings. This study found a wide variety of ventilation conditions, with many buildings failing to meet relevant ventilation standards. Regulators may want to consider implementing more complete building inspections at commissioning and point of sale.

217

The impact of filter loading on residential hvac performance.  

E-Print Network (OSTI)

??Buildings are the primary user of energy in the USA. Within homes, the heating, ventilation, and air condition (HVAC) system is the largest energy consumer.… (more)

Kruger, Abraham J.

2013-01-01T23:59:59.000Z

218

VOLUME 11, NUMBER 4 HVAC&R RESEARCH OCTOBER 2005 A Model for Annual Simulation of Standing  

E-Print Network (OSTI)

Column Well Ground Heat Exchangers Z. Deng, PhD S.J. Rees, PhD, CEng J.D. Spitler, PhD, PE Member ASHRAE Member ASHRAE Fellow ASHRAE Received February 24, 2005; accepted May 26, 2005 Standing column wells can, such as IGSHPA (1988), ASHRAE (1995), and Kavanaugh and Rafferty (1997), cover the first two system types

219

HVAC Efficiency Controls Could Mean Significant Savings | Department of  

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

HVAC Efficiency Controls Could Mean Significant Savings HVAC Efficiency Controls Could Mean Significant Savings HVAC Efficiency Controls Could Mean Significant Savings April 27, 2012 - 11:58am Addthis HVAC Efficiency Controls Could Mean Significant Savings April Saylor April Saylor Former Digital Outreach Strategist, Office of Public Affairs What does this mean for me? Commercial building owners could save an average 38% on their heating & cooling bills just by installing a few new controls onto their HVAC systems. According to a new report from Pacific Northwest National Lab, commercial building owners could save an average 38 percent on their heating and cooling bills just by installing a few new controls onto their HVAC systems. These findings mean significant potential savings for building owners who use commercial rooftop systems - but there's just one problem: the

220

HVAC Maintenance and Technologies | Department of Energy  

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

HVAC Maintenance and Technologies HVAC Maintenance and Technologies Presentation covers the HVAC maintenance and technologies, and is given at the Spring 2010 Federal Utility...

Note: This page contains sample records for the topic "hvac systems volume" 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

HVAC Installed Performance  

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

This presentation was given at the Summer 2012 DOE Building America meeting on July 25, 2012, and addressed the question HVAC proper installation energy savings: over-promising or under-delivering?"

222

Wireless Infrastructure for Performing Monitoring, Diagnostics, and Control HVAC and Other Energy-Using Systems in Small Commercial Buildings  

Science Conference Proceedings (OSTI)

This project focused on developing a low-cost wireless infrastructure for monitoring, diagnosing, and controlling building systems and equipment. End users receive information via the Internet and need only a web browser and Internet connection. The system used wireless communications for: (1) collecting data centrally on site from many wireless sensors installed on building equipment, (2) transmitting control signals to actuators and (3) transmitting data to an offsite network operations center where it is processed and made available to clients on the Web (see Figure 1). Although this wireless infrastructure can be applied to any building system, it was tested on two representative applications: (1) monitoring and diagnostics for packaged rooftop HVAC units used widely on small commercial buildings and (2) continuous diagnosis and control of scheduling errors such as lights and equipment left on during unoccupied hours. This project developed a generic infrastructure for performance monitoring, diagnostics, and control, applicable to a broad range of building systems and equipment, but targeted specifically to small to medium commercial buildings (an underserved market segment). The proposed solution is based on two wireless technologies. The first, wireless telemetry, is used for cell phones and paging and is reliable and widely available. This risk proved to be easily managed during the project. The second technology is on-site wireless communication for acquiring data from sensors and transmitting control signals. The technology must enable communication with many nodes, overcome physical obstructions, operate in environments with other electrical equipment, support operation with on-board power (instead of line power) for some applications, operate at low transmission power in license-free radio bands, and be low cost. We proposed wireless mesh networking to meet these needs. This technology is relatively new and has been applied only in research and tests. This proved to be a major challenge for the project and was ultimately abandoned in favor of a directly wired solution for collecting sensor data at the building. The primary reason for this was the relatively short ranges at which we were able to effectively place the sensor nodes from the central receiving unit. Several different mesh technologies were attempted with similar results. Two hardware devices were created during the original performance period of the project. The first device, the WEB-MC, is a master control unit that has two radios, a CPU, memory, and serves as the central communications device for the WEB-MC System (Currently called the 'BEST Wireless HVAC Maintenance System' as a tentative commercial product name). The WEB-MC communicates with the local mesh network system via one of its antennas. Communication with the mesh network enables the WEB-MC to configure the network, send/receive data from individual motes, and serves as the primary mechanism for collecting sensor data at remote locations. The second antenna enables the WEB-MC to connect to a cellular network ('Long-Haul Communications') to transfer data to and from the NorthWrite Network Operations Center (NOC). A third 'all-in-one' hardware solution was created after the project was extended (Phase 2) and additional resources were provided. The project team leveraged a project funded by the State of Washington to develop a hardware solution that integrated the functionality of the original two devices. The primary reason for this approach was to eliminate the mesh network technical difficulties that severely limited the functionality of the original hardware approach. There were five separate software developments required to deliver the functionality needed for this project. These include the Data Server (or Network Operations Center), Web Application, Diagnostic Software, WEB-MC Embedded Software, Mote Embedded Software. Each of these developments was necessarily dependent on the others. This resulted in a challenging management task - requiring high bandwidth communications among

Patrick O'Neill

2009-06-30T23:59:59.000Z

223

Wireless Infrastructure for Performing Monitoring, Diagnostics, and Control HVAC and Other Energy-Using Systems in Small Commercial Buildings  

SciTech Connect

This project focused on developing a low-cost wireless infrastructure for monitoring, diagnosing, and controlling building systems and equipment. End users receive information via the Internet and need only a web browser and Internet connection. The system used wireless communications for: (1) collecting data centrally on site from many wireless sensors installed on building equipment, (2) transmitting control signals to actuators and (3) transmitting data to an offsite network operations center where it is processed and made available to clients on the Web (see Figure 1). Although this wireless infrastructure can be applied to any building system, it was tested on two representative applications: (1) monitoring and diagnostics for packaged rooftop HVAC units used widely on small commercial buildings and (2) continuous diagnosis and control of scheduling errors such as lights and equipment left on during unoccupied hours. This project developed a generic infrastructure for performance monitoring, diagnostics, and control, applicable to a broad range of building systems and equipment, but targeted specifically to small to medium commercial buildings (an underserved market segment). The proposed solution is based on two wireless technologies. The first, wireless telemetry, is used for cell phones and paging and is reliable and widely available. This risk proved to be easily managed during the project. The second technology is on-site wireless communication for acquiring data from sensors and transmitting control signals. The technology must enable communication with many nodes, overcome physical obstructions, operate in environments with other electrical equipment, support operation with on-board power (instead of line power) for some applications, operate at low transmission power in license-free radio bands, and be low cost. We proposed wireless mesh networking to meet these needs. This technology is relatively new and has been applied only in research and tests. This proved to be a major challenge for the project and was ultimately abandoned in favor of a directly wired solution for collecting sensor data at the building. The primary reason for this was the relatively short ranges at which we were able to effectively place the sensor nodes from the central receiving unit. Several different mesh technologies were attempted with similar results. Two hardware devices were created during the original performance period of the project. The first device, the WEB-MC, is a master control unit that has two radios, a CPU, memory, and serves as the central communications device for the WEB-MC System (Currently called the 'BEST Wireless HVAC Maintenance System' as a tentative commercial product name). The WEB-MC communicates with the local mesh network system via one of its antennas. Communication with the mesh network enables the WEB-MC to configure the network, send/receive data from individual motes, and serves as the primary mechanism for collecting sensor data at remote locations. The second antenna enables the WEB-MC to connect to a cellular network ('Long-Haul Communications') to transfer data to and from the NorthWrite Network Operations Center (NOC). A third 'all-in-one' hardware solution was created after the project was extended (Phase 2) and additional resources were provided. The project team leveraged a project funded by the State of Washington to develop a hardware solution that integrated the functionality of the original two devices. The primary reason for this approach was to eliminate the mesh network technical difficulties that severely limited the functionality of the original hardware approach. There were five separate software developments required to deliver the functionality needed for this project. These include the Data Server (or Network Operations Center), Web Application, Diagnostic Software, WEB-MC Embedded Software, Mote Embedded Software. Each of these developments was necessarily dependent on the others. This resulted in a challenging management task - requiring high bandwidth communications among

Patrick O'Neill

2009-06-30T23:59:59.000Z

224

Analysis of the Design of an HVAC System in a Public Building  

E-Print Network (OSTI)

Based on an example of the design of air conditioning system for a public building, this paper analyzes the characteristics of similar buildings, and introduces the air conditioning system, ventilating system, and the fire control system. The optimized combination of these three systems is carried out in this building to meet the demand on comfort, energy conservation, and fire control and protection, which can provide a reference for the design of similar buildings.

Wei, P.; Shao, Z.; Chen, H.

2006-01-01T23:59:59.000Z

225

Chapter 5: Lighting, HVAC, and Plumbing  

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

: Lighting, : Lighting, HVAC, and Plumbing High-Performance Engineering Design Lighting System Design Mechanical System Design Central Plant Systems Plumbing and Water Use Building Control Systems Electrical Power Systems Metering LANL | Chapter 5 High-Performance Engineering Design Lighting, HVAC, and Plumbing By now, the building envelope serves multiple roles. It protects the occupants from changing weather condi- tions and it plays a key part in meeting the occupants' comfort needs. The heating, ventilating, air-conditioning, and lighting (HVAC&L) systems complement the archi- tectural design, govern the building's operation and maintenance costs, and shape the building's long-term environmental impact. The architectural design maximizes the potential for a high-performance building, but it is the

226

RoomZoner: occupancy-based room-level zoning of a centralized HVAC system  

Science Conference Proceedings (OSTI)

Cyber-Physical Systems (CPSs) combine low-power radios with embedded processors in order to provide high-resolution sensing and actuation over a geographic area. This revolution has begun to deliver a new generation of engineering systems and scientific ... Keywords: building energy, cyber-physical systems, energy, environment, home monitoring, programmable thermostats, sensing, wireless sensor networks

Tamim Sookoor, Kamin Whitehouse

2013-04-01T23:59:59.000Z

227

HVAC | OpenEI  

Open Energy Info (EERE)

HVAC HVAC Dataset Summary Description The following data-set is for a benchmark residential home for all TMY3 locations across all utilities in the US. The data is indexed by utility service provider which is described by its "unique" EIA ID ( Source National Renewable Energy Laboratory Date Released April 05th, 2012 (2 years ago) Date Updated April 06th, 2012 (2 years ago) Keywords AC apartment CFL coffeemaker Computer cooling cost demand Dishwasher Dryer Furnace gas HVAC Incandescent Laptop load Microwave model NREL Residential television tmy3 URDB Data text/csv icon Residential Cost Data for Common Household Items (csv, 14.5 MiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage Frequency Annually Time Period License License Open Data Commons Public Domain Dedication and Licence (PDDL)

228

BFRL: HVAC&R - Publications  

Science Conference Proceedings (OSTI)

HVAC&R Equipment Performance Group. Publications. Fundamental Aspects of the Application of Carbon Dioxide in Comfort Cooling. ...

229

Geothermal HVAC System Performance in a Quick Service Restaurant: Field Experience From McDonald's Demonstration  

Science Conference Proceedings (OSTI)

This report summarizes the monitored results from a geothermal heat pump system installed at a new McDonald's restaurant in Westland, Michigan, a suburb 23 miles west of Detroit.

1999-12-15T23:59:59.000Z

230

Avoiding low frequency noise in packaged HVAC equipment  

Science Conference Proceedings (OSTI)

The purpose of this article is to help those involved in the design and commissioning of packaged HVAC systems to understand the root causes of low frequency noise problems and how to avoid many of them at the design stage. In the 1980's, two things happened to dramatically change the types of noise problems encountered in typical new construction. The first was the introduction of new energy regulations that favored variable air volume (VAV) distribution systems over constant volume air distribution systems. A by-product of VAV design is that mid- and high frequency sound pressure levels produced by current air terminal devices and diffusers in many applications are significantly lower than in the past. The second factor was a trend away from the use of built-up central station fan equipment in favor of packaged, floor-by-floor air handlers or rooftop units. As a result, today's HVAC system noise problems are not confined to just the roar and hiss of the past, but now include intense low frequency rumble and time modulation. Indeed, most current noise problems in modern buildings occur in the frequency range well below 250 Hz. A large fraction of these are a result of the dominant sound pressure levels in the 12 to 40 Hz region. These factors, combined with a substantial increase in the level of low frequency sound from the rest of the system, can produce a non-neutral, time modulated, rumbly sounding background noise that many people find objectionable.

Ebbing, C.E. (Carrier Corp., Syracuse, NY (United States). Commercial Unitary Division); Blazier, W.E.Jr. (Warren Blazier Associates, San Francisco, CA (United States))

1993-06-01T23:59:59.000Z

231

Department of Energy and Mineral Engineering Spring 2013 Solar Innovations -HVAC and Waste Stream Analysis  

E-Print Network (OSTI)

PENNSTATE Department of Energy and Mineral Engineering Spring 2013 Solar Innovations - HVAC and Waste Stream Analysis Overview There are two problems that were voiced by Solar Innovations, HVAC system design and recycling stream improvement. The HVAC system was not providing even conditioning of office

Demirel, Melik C.

232

Life Cycle cost Analysis of Waste Heat Operated Absorption Cooling Systems for Building HVAC Applications  

E-Print Network (OSTI)

In this paper, life cycle cost analysis (LCCA) of waste heat operated vapour absorption air conditioning system (VARS) incorporated in a building cogeneration system is presented and discussed. The life cycle cost analysis (LCCA) based on present worth cost (PWC) method, which covers the initial costs, operating costs, maintenance costs, replacement costs and salvage values is the useful tool to merit various cooling and power generation systems for building applications. A life cycle of 23 years was used to calculate the PWC of the system for annual operating hours of 8760 and the same is compared with the electric based vapour compression chiller (VCRS) of same capacity. The life cycle cost (LCC) of waste heat operated absorption chiller is estimated to be US $ 1.5 million which is about 71.5 % low compared to electric powered conventional vapour compression chiller. From the analysis it was found that the initial cost of VARS system was 125 % higher than that of VCRS, while the PWC of operating cost of VARS was 78.2 % lower compared to VCRS. The result shows that the waste heat operated VARS would be preferable from the view point of operating cost and green house gas emission reduction.

Saravanan, R.; Murugavel, V.

2010-01-01T23:59:59.000Z

233

Thermal Resources for Load Management: Understanding Variable Capacity HVAC Systems as a Load Management Resource  

Science Conference Proceedings (OSTI)

Space conditioning accounts for a major portion of the energy consumption in U.S. residences and commercial buildings and is a primary driver of summer and winter peak demand for electric utility companies. The most common type of space conditioning system in the U.S. is some form of an air-source, fixed speed, direct expansion system. For several decades utilities have implemented efficiency and demand response programs involving fixed speed air conditioning. Over the years, there has been a steady rise ..

2013-12-17T23:59:59.000Z

234

Luminaire/plenum/HVAC simulator  

SciTech Connect

This paper describes a new apparatus designed to model the physical parameters that affect fluorescent lamp performance under realistic operating conditions. These parameters include fixture type, mounting configuration, HVAC integration, and room air temperature, which directly determine the minimum lamp wall temperature (MLWT) and, therefore, the resulting light output of the lamp/ballast system. This apparatus is used principally to measure MLWT under operating conditions, which enables us to identify the effects the major parameters have on lamp/ballast system performance. Initial parametric results illustrate the use of this apparatus to provide representative MLWTs for a range of application conditions.

Siminovitch, M.J.; Rubinstein, F.M.; Clark, T.A.; Verderber, R.R.

1985-07-01T23:59:59.000Z

235

A New Pattern Recognition Adaptive Controller with Application to HVAC Systems  

Science Conference Proceedings (OSTI)

This paper describes a novel method for automatically adjusting the gain and integral time of proportional-integral controllers based upon patterns that characterize the closed-loop response. The method was developed for self-regulating systems that ... Keywords: Adaptive control, PI controllers, control applications, energy control, heat exchangers, pattern recognition, pressure control

John E. Seem

1998-08-01T23:59:59.000Z

236

OBSERVE: Occupancy-Based System for Efficient Reduction of HVAC Energy  

E-Print Network (OSTI)

office build- ings [9]. This type of system is often used since it is able to heat and cool areas while - Merced {verickson,mcarreira-perpinan,acerpa}@ucmerced.edu ABSTRACT Heating, cooling and ventilation uncomfortable [13]. If not properly calibrated, these sensors can also be inaccurate [13]. Electrical loads have

Carreira-Perpiñán, Miguel Á.

237

Commissioning of Building HVAC Systems for Improved Energy Performance: A Summary of Annex 40 Results  

E-Print Network (OSTI)

Annex 40 is an international research project which aims at developing, validating and documenting tools for commissioning of buildings and building services. A few months before the end of this 4 years project one presents here an overview of its main achievements. These achievements can be split in 4 categories: 1) tools to manage the commissioning process, 2) manual commissioning tools, 3) approaches to use building energy management system to assist in building commissioning, 4) approaches to use component as well as whole building models to improve commissioning.

Visier, J. C.

2004-01-01T23:59:59.000Z

238

Energy Conservation Experiences with HVAC Systems in the High Humidity Climate, A Case History  

E-Print Network (OSTI)

The purpose of this paper is to discuss several commonly encountered problems associated with attempts to air condition buildings in the humid environment. It, first, reports observations made in the course of studying the air conditioning systems in approximately one hundred buildings at USMC Camp Smedley D. Butler in Okinawa, Japan. Three common problems are then discussed in some detail. It was found that in many cases humidity considerations lead to situations which were energy wasteful. In many instances this could be attributed to either design or operational errors. The most common error found was the selection of an improper method of capacity control. Methods of improved capacity control are suggested and the need for additional work is pointed out.

Todd, T. R.

1985-01-01T23:59:59.000Z

239

International Energy Agency Building Energy Simulation Test and Diagnostic Method for Heating, Ventilating, and Air-Conditioning Equipment Models (HVAC BESTEST); Volume 1: Cases E100-E200  

DOE Green Energy (OSTI)

This report describes the Building Energy Simulation Test for Heating, Ventilating, and Air-Conditioning Equipment Models (HVAC BESTEST) project conducted by the Tool Evaluation and Improvement International Energy Agency (IEA) Experts Group. The group was composed of experts from the Solar Heating and Cooling (SHC) Programme, Task 22, Subtask A. The current test cases, E100-E200, represent the beginning of work on mechanical equipment test cases; additional cases that would expand the current test suite have been proposed for future development.

Neymark, J.; Judkoff, R.

2002-01-01T23:59:59.000Z

240

Multi-carrier Signal Transmission through HVAC Ducts: Experimental Results for Channel Capacity  

E-Print Network (OSTI)

Multi-carrier Signal Transmission through HVAC Ducts: Experimental Results for Channel Capacity, for the first time, experimental results on channel capacity of heating, ventilation, and air-conditioning (HVAC through a building HVAC duct system demonstrate the ability to transmit with a spectral efficiency of 3

Stancil, Daniel D.

Note: This page contains sample records for the topic "hvac systems volume" 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

Building Energy Software Tools Directory: HVAC 1 Toolkit  

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

HVAC 1 Toolkit HVAC 1 Toolkit HVAC 1 Toolkit logo. The Toolkit for Primary HVAC System Energy Calculations is a collection of thirty-eight separate subroutines and corresponding documentation that describes algorithms for predicting the performance of HVAC components. The Toolkit documentation includes thorough descriptions of the component models and solution algorithms, detailed information on the structure of the individual FORTRAN 77 routines, as well as illustrative examples of system simulations with the Toolkit routines. The Toolkit serves two purposes: modules for large-scale simulation and stand-alone component performance prediction. The Toolkit components can also be used to calculate the energy performance of a component with a dedicated driver program to provide the necessary information flow to the Toolkit routines.

242

Analysis and characterization of ancillary service demand response strategies for variable air volume HVAC systems  

E-Print Network (OSTI)

Output variability and prediction difficulties with respect to solar and wind electricity resources increase the requirement of grid-scale reserve capacity and add strain to existing firm generators used for reserves and ...

Blum, David H. (David Henry)

2013-01-01T23:59:59.000Z

243

Personalized HVAC control system  

E-Print Network (OSTI)

We present a novel method of building comfort control, focused around the occupant. Custom sensing, communication, and actuation hardware were developed to locate users in a building, and measure various parameters directly ...

Feldmeier, Mark Christopher

244

Advanced control strategies for HVAC&R systems—An overview: Part II: Soft and fusion control  

SciTech Connect

A chronological overview of the advanced control strategies for HVAC&R is presented. The overview focuses on hard-computing or control techniques, such as proportional-integral-derivative, optimal, nonlinear, adaptive, and robust; soft-computing or control techniques, such as neural networks, fuzzy logic, genetic algorithms; and the fusion or hybrid of hard and soft control techniques. Part I focused on hardcontrol strategies; Part II focuses on soft and fusion control and some future directions in HVA&R research. This overview is not intended to be an exhaustive survey on this topic, and any omissions of other works is purely unintentional.

D. Subbaram Naidu; Craig G. Rieger

2011-04-01T23:59:59.000Z

245

BFRL: HVAC&R Publications  

Science Conference Proceedings (OSTI)

... for Independent Coil Manufacturer Mixed Systems Relative to Original Equipment Manufacturer Mixed Systems and Highest Sales Volume Tested ...

246

Study on Control Performance of HVAC System or Interior Zone and Perimeter Zone in Office Building; Estimation of Optimal PI Tuning in Cooling Operation  

E-Print Network (OSTI)

In office buildings there are generally two HVAC systems installed, one in the perimeter zone (PZ) and one in the interior zone (IZ), and the temperatures of each zone are independently controlled. In the present paper, in order to the solve problem of not being able to satisfy the requirements of room temperature control during the cooling period in summer, an optimal PID parameter (O-PI) is selected through simulation of its two feedback control systems with mutual influence using the models identified with the experimental data. The step response characteristics of the system with optimal parameters compared to those with the parameters selected by the Ziegler-Nichols Method (ZNM-PI) that are generally used for PID parameter tuning on site. The result shows O-PI improved control performance, and the difference between O-PI and ZNM-PI can be used to readjust ZNM-PI selected on site.

Maehara, K.; Sagara, N.

2007-01-01T23:59:59.000Z

247

Validation of a Building Simulation Tool Using Field Data for Three Identical Configuration Full-Serve Restaurants Using Different HVAC Systems  

E-Print Network (OSTI)

A new building application for a pre-existing HVAC software tool which calculates the benefits of desiccant-assisted HVAC equipment versus the performance of a standard vapor-compression system is used to model the monitored results, see Yborra and Spears (2000), for three full-service restaurants. A standard vapor-compression system, an enthalpy assisted vapor-compression system, and a desiccant-assisted vapor-compression system are compared. The vapor-compression portion of each system is comprised of three rooftop units, specifications for each may be found in Yborra and Spears, "Field- Evaluation of Alternative HVAC Strategies to Meet Ventilation, Comfort, and Humidity Control Criteria at Three Full-Serve Restaurants". The software tool uses DOE 2.1E as a calculation engine which runs in the background. Previously, the software tool could model two different hotel configurations, a quickserve restaurant, a supermarket, a retail store, an ice arena, a school, a movie theater, a nursing home and a hospital. With the larger eating area, the full-serve restaurant had the capacity for sensible or enthalpy heat recovery from the exhausted air in the sit-down area. Quick-Serve Restaurants (QSR's) were precluded from these energy saving devices as the exhausted air was heavily laden with grease. Still, even with the kitchen exhausts facing away from the rooftop unit (RTU) intakes, the enthalpy wheels showed noticeable loading from grease. As the field monitoring was performed near Philadelphia, PA, National Renewable Energy Laboratory (NREL) hour-by-hour bin TMY2 meteorological data was used for Philadelphia to model the annual outdoor conditions experienced by each site. Output was provided in the form of humidity bins, monthly energy usage and cost, as well as total annual gas and electric costs. As the fill-serve restaurants were located on the North-Eastem region of the United States, patron comfort was of greater importance to management than annual energy cost savings. Once the model results were determined to properly reflect those of the case studies, the different building equipment types were "moved" around the United States by choosing different bin weather data sets corresponding to Chicago, IL, Atlanta, GA, and Houston, TX. While the default energy rates available in the program are 4 years old, the economic results provide a sound cost comparison.

Brillhart, P. L.; Worek, W. M.

2000-01-01T23:59:59.000Z

248

Classroom HVAC: Improving ventilation and saving energy -- field study plan  

SciTech Connect

The primary goals of this research effort are to develop, evaluate, and demonstrate a very practical HVAC system for classrooms that consistently provides classrooms (CRs) with the quantity of ventilation in current minimum standards, while saving energy, and reducing HVAC-related noise levels. This research is motivated by the public benefits of energy efficiency, evidence that many CRs are under-ventilated, and public concerns about indoor environmental quality in CRs. This document provides a summary of the detailed plans developed for the field study that will take place in 2005 to evaluate the energy and IAQ performance of a new classroom HVAC technology. The field study will include measurements of HVAC energy use, ventilation rates, and IEQ conditions in 10 classrooms with the new HVAC technology and in six control classrooms with a standard HVAC system. Energy use and many IEQ parameters will be monitored continuously, while other IEQ measurements will be will be performed seasonally. Continuously monitored data will be remotely accessed via a LonWorks network. Instrument calibration plans that vary with the type of instrumentation used are established. Statistical tests will be employed to compare energy use and IEQ conditions with the new and standard HVAC systems. Strengths of this study plan include the collection of real time data for a full school year, the use of high quality instrumentation, the incorporation of many quality control measures, and the extensive collaborations with industry that limit costs to the sponsors.

Apte, Michael G.; Faulkner, David; Hodgson, Alfred T.; Sullivan, Douglas P.

2004-10-14T23:59:59.000Z

249

HVAC Sensors, Controls, and Human Feedback Interfaces  

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

HVAC Sensors, HVAC Sensors, Controls, and Human Controls, and Human Feedback Interfaces Feedback Interfaces April 26, 2010 Dr. Amr Gado Emerson Climate Technologies Heating And...

250

Building Technologies Office: Transitioning Traditional HVAC...  

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

Traditional HVAC Contractors to Whole House Performance Expert Meeting Building America hosted the "Transitioning Traditional HVAC Contractors to Whole House Performance...

251

Building Technologies Office: Transitioning Traditional HVAC...  

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

Transitioning Traditional HVAC Contractors to Whole House Performance Expert Meeting to someone by E-mail Share Building Technologies Office: Transitioning Traditional HVAC...

252

Building Energy Software Tools Directory: HVAC Solution  

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

design and specify HVAC equipment. Pick familiar objects like boilers, pumps, fan coils and air handlers and using drag and drop methods, connect them to form a HVAC...

253

Columbia Water and Light- Residential HVAC Rebate Program  

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

Columbia Water and Light (CWL) provides an HVAC incentive for residential customers that are replacing an older heating and cooling system. Customers should submit the mechanical permit from a...

254

Initial Business Case Analysis of Two Integrated Heat Pump HVAC Systems for Near-Zero-Energy Homes - Update to Include Evaluation of Impact of Including a Humidifier Option  

SciTech Connect

The long range strategic goal of the Department of Energy's Building Technologies (DOE/BT) Program is to create, by 2020, technologies and design approaches that enable the construction of net-zero energy homes at low incremental cost (DOE/BT 2005). A net zero energy home (NZEH) is a residential building with greatly reduced needs for energy through efficiency gains, with the balance of energy needs supplied by renewable technologies. While initially focused on new construction, these technologies and design approaches are intended to have application to buildings constructed before 2020 as well resulting in substantial reduction in energy use for all building types and ages. DOE/BT's Emerging Technologies (ET) team is working to support this strategic goal by identifying and developing advanced heating, ventilating, air-conditioning, and water heating (HVAC/WH) technology options applicable to NZEHs. In FY05 ORNL conducted an initial Stage 1 (Applied Research) scoping assessment of HVAC/WH systems options for future NZEHs to help DOE/BT identify and prioritize alternative approaches for further development. Eleven system concepts with central air distribution ducting and nine multi-zone systems were selected and their annual and peak demand performance estimated for five locations: Atlanta (mixed-humid), Houston (hot-humid), Phoenix (hot-dry), San Francisco (marine), and Chicago (cold). Performance was estimated by simulating the systems using the TRNSYS simulation engine (Solar Energy Laboratory et al. 2006) in two 1800-ft{sup 2} houses--a Building America (BA) benchmark house and a prototype NZEH taken from BEopt results at the take-off (or crossover) point (i.e., a house incorporating those design features such that further progress towards ZEH is through the addition of photovoltaic power sources, as determined by current BEopt analyses conducted by NREL). Results were summarized in a project report, HVAC Equipment Design options for Near-Zero-Energy Homes--A Stage 2 Scoping Assessment, ORNL/TM-2005/194 (Baxter 2005). The 2005 study report describes the HVAC options considered, the ranking criteria used, and the system rankings by priority. In 2006, the two top-ranked options from the 2005 study, air-source and ground-source versions of a centrally ducted integrated heat pump (IHP) system, were subjected to an initial business case study. The IHPs were subjected to a more rigorous hourly-based assessment of their performance potential compared to a baseline suite of equipment of legally minimum efficiency that provided the same heating, cooling, water heating, demand dehumidification, and ventilation services as the IHPs. Results were summarized in a project report, Initial Business Case Analysis of Two Integrated Heat Pump HVAC Systems for Near-Zero-Energy Homes, ORNL/TM-2006/130 (Baxter 2006a). The present report is an update to that document which summarizes results of an analysis of the impact of adding a humidifier to the HVAC system to maintain minimum levels of space relative humidity (RH) in winter. The space RH in winter has direct impact on occupant comfort and on control of dust mites, many types of disease bacteria, and 'dry air' electric shocks. Chapter 8 in ASHRAE's 2005 Handbook of Fundamentals (HOF) suggests a 30% lower limit on RH for indoor temperatures in the range of {approx}68-69F based on comfort (ASHRAE 2005). Table 3 in chapter 9 of the same reference suggests a 30-55% RH range for winter as established by a Canadian study of exposure limits for residential indoor environments (EHD 1987). Harriman, et al (2001) note that for RH levels of 35% or higher, electrostatic shocks are minimized and that dust mites cannot live at RH levels below 40%. They also indicate that many disease bacteria life spans are minimized when space RH is held within a 30-60% range. From the foregoing it is reasonable to assume that a winter space RH range of 30-40% would be an acceptable compromise between comfort considerations and limitation of growth rates for dust mites and many bacteria. In addition it reports som

Baxter, Van D [ORNL

2007-02-01T23:59:59.000Z

255

Development of an automated methodology for calibration of simplified air-side HVAC system models and estimation of potential savings from retrofit/commissioning measures  

E-Print Network (OSTI)

This dissertation provides one methodology to determine potential energy savings of buildings with limited information. This methodology is based upon the simplified energy analysis procedure of HVAC systems and the control of the comfort conditions. Numerically, the algorithm is a tailored exhaustive search over all the independent variables that are commonly controlled for a specific type of HVAC system. The potential energy savings methodology has been applied in several buildings that have been retrofitted and/or commissioned previously. Results from the determined savings for the Zachry building at Texas A&M after being commissioned show a close agreement to the calculated potential energy savings (about 85%). Differences are mainly attributed to the use of simplified models. Due to the restriction of limited information about the building characteristics and operational control, the potential energy savings method requires the determination of parameters that characterize its thermal performance. Thus, a calibrated building is needed. A general procedure has been developed to carry out automated calibration of building energy use simulations. The methodology has been tested successfully on building simulations based on the simplified energy analysis procedure. The automated calibration is the minimization of the RMSE of the energy use over daily conditions. The minimization procedure is fulfilled with a non-canonical optimization algorithm, the Simulated Annealing, which mimics the Statistical Thermodynamic performance of the annealing process. That is to say, starting at a specified temperature the algorithm searches variable-space states that are steadier, while heuristically, by the Boltzmann distribution, the local minima is avoided. The process is repeated at a new lower temperature that is determined by a specific schedule until the global minimum is found. This methodology was applied to the most common air-handler units producing excellent results for ideal cases or for samples modified with a 1% white noise.

Baltazar Cervantes, Juan Carlos

2006-12-01T23:59:59.000Z

256

7/11/00-draft copy: do not quote 1 of 30 New Technologies for Residential HVAC Ducts  

E-Print Network (OSTI)

7/11/00-draft copy: do not quote 1 of 30 New Technologies for Residential HVAC Ducts Burke Treidler is not evaluated and HVAC contractors overcome duct system shortcomings by installing oversized equipment Technologies for Residential HVAC Ducts fittings with some use of ductboard. Fittings that snap together were

257

Residential HVAC Data, Assumptions and Methodology for End-Use Forecasting with EPRI-REEPS 2.1  

E-Print Network (OSTI)

LBL-34045 UC-1600 Residential HVAC Data, Assumptions and Methodology for End-Use Forecasting-uses include Heating, Ventilation and Air Conditioning (HVAC). Our analysis uses the modeling framework provided by the HVAC module in the Residential End-Use Energy Planning System (REEPS), which was developed

258

BFRL: HVAC&R Publications  

Science Conference Proceedings (OSTI)

... Survey of HSPF and Heating Capacity Ratings for ICM Mixed Systems Relative to OEM Mixed Systems and Highest Sales Volume Tested ...

259

Modeling of Solar-Powered Single-Effect Absorption Cooling System and Supermarket Refrigeration/HVAC System.  

E-Print Network (OSTI)

??This thesis consists of two different research problems. In the first one, the aim is to model and simulate a solar-powered, single-effect, absorption refrigeration system… (more)

Bahman, Ammar

2011-01-01T23:59:59.000Z

260

Classroom HVAC: Improving ventilation and saving energy -- field study plan  

E-Print Network (OSTI)

in this study. Classroom HVAC: Improving Ventilation andV8doc.sas.com/sashtml. Classroom HVAC: Improving VentilationBerkeley, CA 94720. Classroom HVAC: Improving Ventilation

Apte, Michael G.; Faulkner, David; Hodgson, Alfred T.; Sullivan, Douglas P.

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac systems volume" 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

Inverted Attic Bulkhead for HVAC Ductwork | Department of Energy  

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

Inverted Attic Bulkhead for HVAC Ductwork Inverted Attic Bulkhead for HVAC Ductwork Inverted Attic Bulkhead for HVAC Ductwork, Roseville, California (Fact Sheet), Building America...

262

HVAC component data modeling using industry foundation classes  

E-Print Network (OSTI)

HVAC Component Data Modeling Using Industry Foundationof a major extension of the HVAC part of the IFC data model.generic approach for handling HVAC components. This includes

Bazjanac, Vladimir; Forester, James; Haves, Philip; Sucic, Darko; Xu, Peng

2002-01-01T23:59:59.000Z

263

Departmental Information Systems Engineering (Volume 1) | Department...  

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

Documents & Publications Departmental Information Systems Engineering (Volume 2) Systems Engineering Methodology (SEM) Audit Report: IG-0836 Energy.gov Careers & Internships...

264

Chapter 4, Small Commercial and Residential Unitary and Split System HVAC Cooling Equipment-Efficiency Upgrade Evaluation Protocol: The Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures  

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

4: Small Commercial 4: Small Commercial and Residential Unitary and Split System HVAC Cooling Equipment-Efficiency Upgrade Evaluation Protocol David Jacobson, Jacobson Energy Research Subcontract Report NREL/SR-7A30-53827 April 2013 The Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures 4 - 1 Chapter 4 - Table of Contents 1 Measure Description .............................................................................................................. 2 2 Application Conditions of Protocol ....................................................................................... 3 2.1 Programs with Enhanced Measures ................................................................................. 5 3 Savings Calculations .............................................................................................................. 6

265

Building Energy Software Tools Directory : HVAC Residential Load...  

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

HVAC Residential Load Calcs HD for the iPad Back to Tool HVAC Residential Load Calcs HD screenshot HVAC Residential Load Calcs HD screenshot HVAC Residential Load Calcs HD...

266

Lighting/HVAC interactions and their effects on annual and peak HVAC requirements in commercial buildings  

SciTech Connect

Lighting measures is one effective strategy for reducing energy use in commercial buildings. Reductions in lighting energy have secondary effects on cooling/heating energy consumption and peak HVAC requirements; in general, they increase the heating and decrease cooling requirements of a building. Net change in a building`s annual and peak energy requirements, however, is difficult to quantify and depends on building characteristics, operating conditions, climate. This paper characterizes impacts of lighting/HVAC interactions on annual and peak heating/cooling requirements of prototypical US commercial buildings through computer simulations using DOE-2.1E building energy analysis program. Ten building types of two vintages and nine climates are chosen to represent the US commercial building stock. For each combination, a prototypical building is simulated with two lighting power densities, and resultant changes in heating and cooling loads are recorded. Simple concepts of Lighting Coincidence Factors are used to describe the observed interactions between lighting and HVAC requirements. (Coincidence Factor (CF) is ratio of changes in HVAC loads to those in lighting loads, where load is either annual or peak load). The paper presents tables of lighting CF for major building types and climates. These parameters can be used for regional or national cost/benefit analyses of lighting- related policies and utility DSM programs. Using Annual CFs and typical efficiencies for heating and cooling systems, net changes in space conditioning energy use from a lighting measure can be calculated. Similarly, Demand CFs can be used to estimate the changes in HVAC sizing, which can then be converted to changes in capital outlay using standard-design curves; or they can be used to estimate coincident peak reductions for the analysis of the utility`s avoided costs. Results from use of these tables are meaningful only when they involve a significantly large number of buildings.

Sezgen, A.O.; Huang, Y.J.

1994-08-01T23:59:59.000Z

267

High-Speed Internet Access via HVAC Ducts: A New Approach Daniel D. Stancil, Ozan K. Tonguz, Ariton Xhafa, Ahmet Cepni, and Pavel Nikitin  

E-Print Network (OSTI)

High-Speed Internet Access via HVAC Ducts: A New Approach Daniel D. Stancil, Ozan K. Tonguz, Ariton conditioning (HVAC) ducts for indoor wireless transmission systems and networks. Mea- surements and system to 100 Mbps should be possible, when HVAC system is used in con- junction with OFDM technology. Keywords

Stancil, Daniel D.

268

Ameren Illinois (Electric) - Custom, HVAC, and Motor Business...  

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

Custom, HVAC, and Motor Business Efficiency Incentives Ameren Illinois (Electric) - Custom, HVAC, and Motor Business Efficiency Incentives Eligibility Commercial Industrial...

269

Review of Pre- and Post-1980 Buildings in CBECS - HVAC Equipment  

SciTech Connect

PNNL was tasked by DOE to look at HVAC systems and equipment for Benchmark buildings based on 2003 CBECS data. This white paper summarizes the results of PNNL’s analysis of 2003 CBECS data and provides PNNL’s recommendations for HVAC systems and equipment for use in the Benchmark buildings.

Winiarski, David W.; Jiang, Wei; Halverson, Mark A.

2006-12-01T23:59:59.000Z

270

Grundfos HVAC OEM Efficient water hydraulics  

E-Print Network (OSTI)

Grundfos HVAC OEM Efficient water hydraulics for Heat Pumps Anders Mønsted GRUNDFOS Holding A/S Group Technical Key Account Manager HVAC OEM Project Management http://net.grundfos.com/doc/webnet/hv acoem/index.htmlOEM online #12;Introduction Grundfos Company Grundfos HVAC OEM Current Circulator Range

Oak Ridge National Laboratory

271

MODELING PARTICLE DEPOSITION ON HVAC HEAT EXCHANGERS  

E-Print Network (OSTI)

LBNL-49339 MODELING PARTICLE DEPOSITION ON HVAC HEAT EXCHANGERS J.A. Siegel1,3 * and W.W. Nazaroff2 Department of Energy under contract DE-AC03-76SF00098. #12;MODELING PARTICLE DEPOSITION ON HVAC HEAT, such as discontinuities in the fins, are hypothesized to be responsible for the discrepancy. INDEX TERMS HVAC, Fouling

272

Scaling and Optimization of Magnetic Refrigeration for Commercial Building HVAC Systems Greater than 175 kW in Capacity  

Science Conference Proceedings (OSTI)

Heating, ventilation, air-conditioning and refrigeration (HVACR) account for approximately one- third of building energy consumption. Magnetic refrigeration presents an opportunity for significant energy savings and emissions reduction for serving the building heating, cooling, and refrigeration loads. In this paper, we have examined the magnet and MCE material requirements for scaling magnetic refrigeration systems for commercial building cooling applications. Scaling relationships governing the resources required for magnetic refrigeration systems have been developed. As system refrigeration capacity increases, the use of superconducting magnet systems becomes more applicable, and a comparison is presented of system requirements for permanent and superconducting (SC) magnetization systems. Included in this analysis is an investigation of the ability of superconducting magnet based systems to overcome the parasitic power penalty of the cryocooler used to keep SC windings at cryogenic temperatures. Scaling relationships were used to develop the initial specification for a SC magnet-based active magnetic regeneration (AMR) system. An optimized superconducting magnet was designed to support this system. In this analysis, we show that the SC magnet system consisting of two 0.38 m3 regenerators is capable of producing 285 kW of cooling power with a T of 28 K. A system COP of 4.02 including cryocooler and fan losses which illustrates that an SC magnet-based system can operate with efficiency comparable to traditional systems and deliver large cooling powers of 285.4 kW (81.2 Tons).

Abdelaziz, Omar [ORNL; West, David L [ORNL; Mallow, Anne M [ORNL

2012-01-01T23:59:59.000Z

273

Active noise control: A tutorial for HVAC designers  

Science Conference Proceedings (OSTI)

This article will identify the capabilities and limitations of ANC in its application to HVAC noise control. ANC can be used in ducted HVAC systems to cancel ductborne, low-frequency fan noise by injecting sound waves of equal amplitude and opposite phase into an air duct, as close as possible to the source of the unwanted noise. Destructive interference of the fan noise and injected noise results in sound cancellation. The noise problems that it solves are typically described as rumble, roar or throb, all of which are difficult to address using traditional noise control methods. This article will also contrast the use of active against passive noise control techniques. The main differences between the two noise control measures are acoustic performance, energy consumption, and design flexibility. The article will first present the fundamentals and basic physics of ANC. The application to real HVAC systems will follow.

Gelin, L.J.

1997-08-01T23:59:59.000Z

274

Software tools for HVAC research  

Science Conference Proceedings (OSTI)

Energy saving methods can be employed to reduce energy consumption in buildings, or improve indoor thermal conditions. An example of those methods is the use of permeable coverings, but there are other important parameters like thermal inertia. To understand ... Keywords: Building, Computer, Design, Energy saving, HVAC, Software tools

José A. Orosa; Armando C. Oliveira

2011-10-01T23:59:59.000Z

275

HVAC and water heating system field test experiences at the Tennessee Energy Conservation in Housing (TECH) complex  

DOE Green Energy (OSTI)

The TECH complex has been utilized since 1976 as a field test site for several novel and conventional space conditioning and water heating systems. Systems tested include the Annual Cycle Energy System (ACES), solar space heating systems (hydronic and air), parallel and series solar assisted heat pumps, air-type solar heating with off-peak storage, passive solar heating, two conventional air-to-air heat pumps, an air-to-air heat pump with desuperheater water heater, and horizontal coil and multiple shallow vertical coil ground-coupled heat pumps. System descriptions and test results are presented as well as performance observations.

Baxter, V.D.; McGraw, B.A.

1984-01-01T23:59:59.000Z

276

Methodology for adapting rigorous simulation programs to supervisory control of building HVAC&R systems: simulation, calibration and optimization.  

E-Print Network (OSTI)

??In this thesis, general and systematic methodologies were developed for simulating, calibrating and optimal control of building energy system. Based on investigation of two popular… (more)

Sun, Jian

2005-01-01T23:59:59.000Z

277

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 51, NO. 5, MAY 2003 945 Propagation Model for the HVAC Duct as a  

E-Print Network (OSTI)

for the HVAC Duct as a Communication Channel Pavel V. Nikitin, Member, IEEE, Daniel D. Stancil, Senior Member (HVAC) ducts in buildings are typically hollow metal pipes which can be used as waveguides to carry such a communication system. This paper presents a propagation model for a straight HVAC duct terminated at both ends

Stancil, Daniel D.

278

Development of New HVAC Design Tools: Search for the Holy Grail of  

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

Development of New HVAC Design Tools: Search for the Holy Grail of Development of New HVAC Design Tools: Search for the Holy Grail of Ventilation Research Speaker(s): Jelena Srebric Date: January 29, 2004 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: William Fisk HVAC systems are very important to our wellbeing, energy, and the environment. Current design tools are typically supported by basic knowledge, and keep us at arm's length from the many practical problems. The design paradigm has been shifted several times in the past from thermal comfort, energy conservation, health concerns, and now probably to security issues. Each of the shift has required better design tools of HVAC systems.A team led by Dr. Jelena Srebric at the Department of Architecture, the Penn State University (PSU) is developing new HVAC design tools to meet

279

Economic Comparison of HVAC and HVDCSolutions for Large Offshore Wind Farms underSpecial Consideration of Reliability.  

E-Print Network (OSTI)

?? An economic comparison of several HVAC-HVDC transmission systems from large offshore windfarms is presented. The power output from the offshore windfarm is modeled by… (more)

Lazaridis, Lazaros

2005-01-01T23:59:59.000Z

280

A plug and play framework for an HVAC air handling unit and temperature sensor auto recognition technique.  

E-Print Network (OSTI)

??A plug and play framework for an HVAC air handling unit control system is proposed in this study. This is the foundation and the first… (more)

Zhou, Xiaohui

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac systems volume" 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

Interdisciplinary Innovation and Vision in the HVAC  

E-Print Network (OSTI)

High energy costs in buildings are forcing the building owners, developers, fund and facility managers to find alternate energy efficiency methods while improving the indoor air quality and thus the comfort level of the room occupants. High potentials for optimizing costs can be found in the HVAC systems when calculated over the total Life-Cycle-Cost (LCC) of a building incorporating planning through to facility management. This requires an accurate plan specifying an efficient technical operating method with optimized energy cost efficiency and comfort for the room occupants. In turn, the plan should be considered in any bidding process. Multisensory equipment is an integral part of the LCC concept and should not be underestimated in its impact on energy efficiency. The possibility of customizing the requirements of the room occupants should be included in each specification of a building/room automation system. The following case study will explain how modern sensory systems can be used for investment and energy savings in various HVAC system.

Hecker, T.

2008-01-01T23:59:59.000Z

282

Initial Business Case Analysis of Two Integrated Heat Pump HVAC Systems for Near-Zero-Energy Homes -- Update to Include Analyses of an Economizer Option and Alternative Winter Water Heating Control Option  

Science Conference Proceedings (OSTI)

The long range strategic goal of the Department of Energy's Building Technologies (DOE/BT) Program is to create, by 2020, technologies and design approaches that enable the construction of net-zero energy homes at low incremental cost (DOE/BT 2005). A net zero energy home (NZEH) is a residential building with greatly reduced needs for energy through efficiency gains, with the balance of energy needs supplied by renewable technologies. While initially focused on new construction, these technologies and design approaches are intended to have application to buildings constructed before 2020 as well resulting in substantial reduction in energy use for all building types and ages. DOE/BT's Emerging Technologies (ET) team is working to support this strategic goal by identifying and developing advanced heating, ventilating, air-conditioning, and water heating (HVAC/WH) technology options applicable to NZEHs. Although the energy efficiency of heating, ventilating, and air-conditioning (HVAC) equipment has increased substantially in recent years, new approaches are needed to continue this trend. Dramatic efficiency improvements are necessary to enable progress toward the NZEH goals, and will require a radical rethinking of opportunities to improve system performance. The large reductions in HVAC energy consumption necessary to support the NZEH goals require a systems-oriented analysis approach that characterizes each element of energy consumption, identifies alternatives, and determines the most cost-effective combination of options. In particular, HVAC equipment must be developed that addresses the range of special needs of NZEH applications in the areas of reduced HVAC and water heating energy use, humidity control, ventilation, uniform comfort, and ease of zoning. In FY05 ORNL conducted an initial Stage 1 (Applied Research) scoping assessment of HVAC/WH systems options for future NZEHs to help DOE/BT identify and prioritize alternative approaches for further development. Eleven system concepts with central air distribution ducting and nine multi-zone systems were selected and their annual and peak demand performance estimated for five locations: Atlanta (mixed-humid), Houston (hot-humid), Phoenix (hot-dry), San Francisco (marine), and Chicago (cold). Performance was estimated by simulating the systems using the TRNSYS simulation engine (Solar Energy Laboratory et al. 2006) in two 1800-ft{sup 2} houses--a Building America (BA) benchmark house and a prototype NZEH taken from BEopt results at the take-off (or crossover) point (i.e., a house incorporating those design features such that further progress towards ZEH is through the addition of photovoltaic power sources, as determined by current BEopt analyses conducted by NREL). Results were summarized in a project report, HVAC Equipment Design options for Near-Zero-Energy Homes--A Stage 2 Scoping Assessment, ORNL/TM-2005/194 (Baxter 2005). The 2005 study report describes the HVAC options considered, the ranking criteria used, and the system rankings by priority. In 2006, the two top-ranked options from the 2005 study, air-source and ground-source versions of an integrated heat pump (IHP) system, were subjected to an initial business case study. The IHPs were subjected to a more rigorous hourly-based assessment of their performance potential compared to a baseline suite of equipment of legally minimum efficiency that provided the same heating, cooling, water heating, demand dehumidification, and ventilation services as the IHPs. Results were summarized in a project report, Initial Business Case Analysis of Two Integrated Heat Pump HVAC Systems for Near-Zero-Energy Homes, ORNL/TM-2006/130 (Baxter 2006). The present report is an update to that document. Its primary purpose is to summarize results of an analysis of the potential of adding an outdoor air economizer operating mode to the IHPs to take advantage of free cooling (using outdoor air to cool the house) whenever possible. In addition it provides some additional detail for an alternative winter water heating/space heating (WH/S

Baxter, Van D [ORNL

2006-12-01T23:59:59.000Z

283

STATE OF CALIFORNIA CERTIFICATE OF COMPLIANCE, PRESCRIPTIVE HVAC ALTERATIONS  

E-Print Network (OSTI)

STATE OF CALIFORNIA CERTIFICATE OF COMPLIANCE, PRESCRIPTIVE HVAC ALTERATIONS CEC-MECH-1C-ALT-HVAC (Revised 07/10) CALIFORNIA ENERGY COMMISSION CERTIFICATE OF COMPLIANCE MECH-1C-ALT-HVAC Prescriptive HVAC Steps" column below. Note: After installation of HVAC units and/or ducts, the Installation

284

Empirical Methodologies for Improving HVAC Efficiency  

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

Empirical Methodologies for Improving HVAC Efficiency Empirical Methodologies for Improving HVAC Efficiency Speaker(s): Anil Aswani Date: September 21, 2012 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Michael Wetter This talk describes the use of empirical methodologies that we have developed for the purpose of improving heating, ventilation, and air-conditioning (HVAC) efficiency through better control algorithms and configuration. We show that semiparametric regression can both identify simplified models of thermal HVAC dynamics while also estimating time-varying heating loads using only real-time temperature measurements from thermostats. These models can be used with our learning-based model predictive control (LBMPC) method in order to improve the energy-efficiency of HVAC. Experiments on testbeds with different types of HVAC show the

285

Application of Various HVAC Simulation Programs and Visual Tools to Commissioning  

E-Print Network (OSTI)

Various existing HVAC system simulation programs and visualization tools are considered to be potentially powerful tools for commissioning. Although not originally developed as commissioning tools, these programs facilitate the confirmation/comparison of HVAC system function and performance and enable detailed analysis of parameters influencing HVAC system performance. This paper investigates the functionality and ease of use of several such programs in support of the commissioning process. The investigation and assessment of simulation programs includes: Micro HASP, Micro ACSS, FACES, LCEM, HVACSIM+, TRNSYS, DOE-2, EnergyPlus and DeST and their visual tools.

Zheng, M.; Pan, S.

2007-01-01T23:59:59.000Z

286

A standard simulation testbed for the evaluation of control algorithms & strategies related to variable air volume HVAC systems  

E-Print Network (OSTI)

The parameters for a dynamic, computer simulation model were developed. The parameters characterize the physical and geometric properties of a building shell, the internal and external building loads, the buildings secondary ...

DeSimone, Mark

1995-01-01T23:59:59.000Z

287

Wireless Temperature Sensors for Improved HVAC Control  

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

reliable, and affordable and affordable Wireless Temperature Sensors for Improved HVAC Control An assessment of wireless sensor technology Executive Summary This Technology...

288

Coordinated Control of HVAC Systems  

E-Print Network (OSTI)

This paper describes the development of new control logic for starting and stopping energy-intensive equipment in buildings such as staged air-conditioning units. The concept is to use pulse-width modulation (PWM) instead of level-crossing logic. A finite state machine is used to handle the case where a single unit has multiple stages of operation. An optimized coordinator determines the phase of the PWM signals of each unit so that peak demand for power is minimized over each PWM period. Control logic for the PWM function was developed so that the phase could be manipulated by the coordinator. Computer simulations were used to assess the performance of the new strategy and to compare it to levelcrossing logic. The following five metrics were used to assess the performance: 1) magnitude of the control error, 2) start/stop frequency, 3) average power consumption, 4) standard deviation of the power consumption, 5) peak power consumption. The computer simulations showed that the new strategy could reduce peak power consumption by 20% relative to level-crossing logic. The computer simulations also showed that the new strategy increased the magnitude of the space temperature control error by 11% and increased the number of start/stop operations by 27% relative to level-crossing logic.

Federspiel, C.; Lanning, S. D.; Li, H.; Auslander, D. M.

2001-01-01T23:59:59.000Z

289

Particulate Fouling of HVAC Heat Exchangers Jeffrey Alexander Siegel  

E-Print Network (OSTI)

Particulate Fouling of HVAC Heat Exchangers by Jeffrey Alexander Siegel B.S. (Swarthmore College.......................................................................................xv CHAPTER 1: PARTICULATE FOULING OF HVAC HEAT EXCHANGERS ....1 1.1 Introduction.......................................................................11 CHAPTER 2: MODELING PARTICLE DEPOSITION ON HVAC HEAT EXCHANGERS

Siegel, Jeffrey

290

Building Energy Software Tools Directory: HVAC Residential Load...  

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

HVAC Residential Load Calcs HD for the iPad Carmel Software logo HVAC Residential Load Calcs HD is a comprehensive HVAC heating and cooling load calculation application for the...

291

Compression effects on pressure loss in flexible HVAC ducts  

E-Print Network (OSTI)

to Determine Flow Resistance of HVAC Air Ducts and Fittings.Pressure Loss in Flexible HVAC Ducts Bass Abushakra, Ph.D.to Determine Flow Resistance of HVAC Air Ducts and Fittings.

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

2002-01-01T23:59:59.000Z

292

Fouling of HVAC fin and tube heat exchangers  

E-Print Network (OSTI)

air ? air ? part ? part FPI HVAC REFERENCES Anonymous, 1987,LBNL-47668 Fouling of HVAC Fin and Tube Heat ExchangersCIEE SPONSOR. FOULING OF HVAC FIN AND TUBE HEAT EXCHANGERS

Siegel, Jeffrey; Carey, Van P.

2001-01-01T23:59:59.000Z

293

Distributed Control of HVAC&R Networks  

E-Print Network (OSTI)

Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems are a major component of worldwide energy consumption, and frequently consist of complex networks of interconnected components. The ubiquitous nature of these systems suggests that improvements in their energy efficiency characteristics can have significant impact on global energy consumption. The complexity of the systems, however, means that decentralized control schemes will not always suffice to balance competing goals of energy efficiency and occupant comfort and safety. This dissertation proposes control solutions for three facets of this problem. The first is a cascaded control architecture for actuators, such as electronic expansion valves, that provides excellent disturbance rejection and setpoint tracking characteristics, as well as partial nonlinearity compensation without a compensation model. The second solution is a hierarchical control architecture for multiple-evaporator vapor compression systems that uses model predictive control (MPC) at both the supervisory and component levels. The controllers leverage the characteristics of MPC to balance energy efficiency with occupant comfort. Since the local controllers are decentralized, the architecture retains a degree of modularity—changing one component does not require changing all controllers. The final contribution is a new distributed optimization algorithm that is rooted in distributed MPC and is especially motivated by HVAC&R systems. This algorithm allows local level optimizers to iterate to a centralized solution. The optimizers have no knowledge of any plant other than the plant they are associated with, and only need to communicate with their immediate neighbors. The efficacy of the algorithm is displayed with two sets of examples. One example is simulation based, wherein a building is modeled in the EnergyPlus software suite. The other is an experimental example. In this example, the algorithm is applied to a multiple evaporator vapor compression system. In both cases the design method is discussed, and the ability of the algorithm to reduce energy consumption when properly applied is demonstrated.

Elliott, Matthew Stuart

2013-08-01T23:59:59.000Z

294

Turbine-Generator Auxilary Systems, Volume 3  

Science Conference Proceedings (OSTI)

The updated Turbine-Generator Auxiliary Systems, Volume 3: Generator Hydrogen System Maintenance Guide provides nuclear and fossil plant personnel with operation and maintenance guidance on the generator hydrogen system.BackgroundInput from member utilities of EPRI Program 65 as well as the Institute of Nuclear Power Operations (INPO) have indicated that maintenance guides are needed for turbine-generator auxiliary systems. The first auxiliary system ...

2012-12-03T23:59:59.000Z

295

Report on HVAC Option Selections for a Relocatable Classroom...  

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

Report on HVAC Option Selections for a Relocatable Classroom Energy and Indoor Environmental Quality Field Study Title Report on HVAC Option Selections for a Relocatable Classroom...

296

HVAC Water Heater Field Tests Research Project | Department of...  

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

HVAC Water Heater Field Tests Research Project HVAC Water Heater Field Tests Research Project The U.S. Department of Energy is currently conducting research into heating,...

297

Modeling and Simulation of HVAC Faulty Operations and Performance...  

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

Modeling and Simulation of HVAC Faulty Operations and Performance Degradation due to Maintenance Issues Title Modeling and Simulation of HVAC Faulty Operations and Performance...

298

Improving Relocatable Classroom HVAC For Improved IEQ And Energy...  

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

Improving Relocatable Classroom HVAC For Improved IEQ And Energy Efficiency Title Improving Relocatable Classroom HVAC For Improved IEQ And Energy Efficiency Publication Type...

299

DOE Convening Report on Certification of Commercial HVAC and...  

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

Convening Report on Certification of Commercial HVAC and CRE Products DOE Convening Report on Certification of Commercial HVAC and CRE Products This document is the convening...

300

Ventilation, temperature, and HVAC characteristics in small and...  

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

Ventilation, temperature, and HVAC characteristics in small and medium commercial buildings in California Title Ventilation, temperature, and HVAC characteristics in small and...

Note: This page contains sample records for the topic "hvac systems volume" 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

Ameren Illinois (Electric) - Custom, HVAC, and Motor Business...  

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

Ameren Illinois (Electric) - Custom, HVAC, and Motor Business Efficiency Incentives Ameren Illinois (Electric) - Custom, HVAC, and Motor Business Efficiency Incentives < Back...

302

Monitoring-based HVAC Commissioning of an Existing Office Building...  

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

Monitoring-based HVAC Commissioning of an Existing Office Building for Energy Efficiency Title Monitoring-based HVAC Commissioning of an Existing Office Building for Energy...

303

Chapter 5: Lighting, HVAC, and Plumbing | Department of Energy  

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

5: Lighting, HVAC, and Plumbing Chapter 5: Lighting, HVAC, and Plumbing Chapter 5 of the LANL Sustainable Design Guide with guidelines for developing sustainable, healthy,...

304

Modeling and simulation of HVAC faults in EnergyPlus  

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

simulation of HVAC faults in EnergyPlus Title Modeling and simulation of HVAC faults in EnergyPlus Publication Type Conference Paper Refereed Designation Refereed Year of...

305

New and Underutilized Technology: HVAC Occupancy Sensors | Department...  

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

HVAC Occupancy Sensors New and Underutilized Technology: HVAC Occupancy Sensors October 4, 2013 - 4:20pm Addthis The following information outlines key deployment considerations...

306

Unusual HVAC challenges require innovative solutions  

SciTech Connect

There were many reasons behind Motorola`s decision to build the first 225,000 sq ft of a planned one million sq ft manufacturing facility in Chihuahua, Mexico. Among these were the availability of skilled labor in the area, lower construction costs, some export tax advantages, and the close proximity to the US border. The new facility is made up of a variety of functional areas that together create an impressively efficient plant. Phase 1 construction included a large manufacturing floor, shipping and receiving areas, a bulk storage facility, and a large office area with a view of the factory floor. The structure also houses a retail store where Motorola consumer products are sold, a conference and banquet center, a commercial kitchen, and dining facilities for 750. The design cooling load is 750 tons; the heating load is 4.5 million Btuh. The paper discusses the challenging location, the HVAC system, and the future expansion planned.

Jardine, G.M.; Gwin, O.D. [Heery International, Inc., Atlanta, GA (United States)

1998-02-01T23:59:59.000Z

307

Quantitative Methods for Comparing Different HVAC Control Schemes  

E-Print Network (OSTI)

Experimentally comparing the energy usage and comfort characteristics of different controllers in heating, ventilation, and air-conditioning (HVAC) systems is difficult because variations in weather and occupancy conditions preclude the possibility of establishing equivalent experimental conditions across the order of hours, days, and weeks. This paper is concerned with defining quantitative metrics of energy usage and occupant comfort, which can be computed and compared in a rigorous manner that is capable of determining whether differences between controllers are statistically significant in the presence of such environmental fluctuations. Experimental case studies are presented that compare two alternative controllers (a schedule controller and a hybrid system learning-based model predictive controller) to the default controller in a building-wide HVAC system. Lastly, we discuss how our proposed methodology may also be able to quantify the efficiency of other building automation systems.

Aswani, Anil; Taneja, Jay; Krioukov, Andrew; Culler, David; Tomlin, Claire

2012-01-01T23:59:59.000Z

308

Residential HVAC Indoor Air Quality(ASHRAE 62.2)  

E-Print Network (OSTI)

Residential HVAC && Indoor Air Quality(ASHRAE 62.2) Tav Commins #12;Contact Information · Energy construction, Additions /Alterations · Nonresidential and Residential #12;Residential HVAC && Indoor Air Quality(ASHRAE 62.2) ·HVAC EfficiencyHVAC Efficiency ·Quality Installation (HERS Measures) S li b HERS R t

309

Cooling and Dehumidification HVAC Technology for 1990s  

E-Print Network (OSTI)

Desiccant Cooling and Dehumidification HVAC Technology for 1990s HVAC: Heating, Ventilation Research Trusts SERI #12;Challenges Facing HVAC Industry in 1990's * Reduction of CFCs * Indoor air quality to solve the problems of the HVAC industry faced in1990's for space conditioning. SERI #12;l- = m mN a- mg

Oak Ridge National Laboratory

310

Optimization Control Strategies for HVAC Terminal Boxes  

E-Print Network (OSTI)

The HVAC terminal boxes are one of the major building HVAC components. They directly impact the building room comfort conditions and the energy costs. How to operate the box in a highly energy efficient way and maintain the room comfort level is an important topic in today's building energy management and HVAC control field. The authors developed novel optimized control strategies and operation schedules for the terminal boxes for both occupied and non-occupied hours. The optimized control schedules were implemented in a medical complex during the commissioning. This not only improved the building comfort conditions but also reduced the energy costs.

Zhu, Y.; Batten, T.; Noboa, H.; Claridge, D. E.; Turner, W. D.; Liu, M.; Zhou, J.; Cameron, C.; Keeble, D.; Hirchak, R.

2000-01-01T23:59:59.000Z

311

HVAC Optimized Heat Exchangers Research Project | Department of Energy  

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

Optimized Heat Exchangers Research Optimized Heat Exchangers Research Project HVAC Optimized Heat Exchangers Research Project The U.S. Department of Energy is currently conducting research into heating, ventilation, and air conditioning (HVAC) optimized heat exchangers. The information generated in this study will demonstrate performance improvements that can be achieved through optimization of refrigerant circuitry for non-uniform inlet air distribution. The tubing circuitry on fin-tube heat exchangers used in residential space-conditioning systems is typically designed assuming uniform airflow through the finned passageways. However, the air flow in installed systems is highly non-uniform, resulting in mismatched refrigerant-air heat transfer that reduces the capacity of the heat exchanger and efficiency of

312

Laboratory measurement of secondary pollutant yields from ozone reaction with HVAC filters.  

E-Print Network (OSTI)

from Ozone Reaction with HVAC Filters Hugo Destaillats,from Ozone Reaction with HVAC Filters Hugo Destaillatsfrom Ozone Reaction with HVAC Filters Hugo Destaillats

Destaillats, Hugo

2012-01-01T23:59:59.000Z

313

Comparisons of HVAC Simulations between EnergyPlus and DOE-2.2 for Data Centers  

E-Print Network (OSTI)

ABORATORY Comparisons of HVAC Simulations between EnergyPlusemployer. Comparisons of HVAC Simulations between EnergyPlusThis paper compares HVAC simulations between EnergyPlus and

Hong, Tianzhen

2009-01-01T23:59:59.000Z

314

Investigation of IAQ-Relevant Surface Chemistry and Emissions on HVAC Filter Materials  

E-Print Network (OSTI)

VOCs emitted by reactions of HVAC filters with ozone usingChemistry and Emissions on HVAC Filter Materials HugoChemistry and Emissions on HVAC Filter Materials Authors:

Destaillats, Hugo

2010-01-01T23:59:59.000Z

315

HVAC Modeling for Cost of Ownership Assessment in Biotechnology & Drugs Manufacturing  

E-Print Network (OSTI)

2000 Broomes, Peter. , “HVAC Modeling for Cost of Ownership2000 Broomes, Peter. , “HVAC Results Comparison”, April,HVAC Modeling for Cost of Ownership Assessment in

Broomes, Peter; Dornfeld, David A

2003-01-01T23:59:59.000Z

316

HVAC Equipment Rebate Program | Department of Energy  

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

HVAC Equipment Rebate Program HVAC Equipment Rebate Program HVAC Equipment Rebate Program < Back Eligibility Agricultural Commercial Industrial Installer/Contractor Institutional Multi-Family Residential Nonprofit Schools Savings Category Heating & Cooling Commercial Heating & Cooling Heating Cooling Heat Pumps Maximum Rebate Rebates of greater than $5,000 require pre-approval Program Info Funding Source Efficiency Vermont Public Benefit Fund Expiration Date 06/30/2013 State Vermont Program Type State Rebate Program Rebate Amount Varies depending on technology and efficiency Provider Efficiency Vermont NOTE: Rebate reservations are required for all boiler and furnace projects. Efficiency Vermont offers rebates for commercial installations of high-efficiency HVAC equipment and controls. For businesses and purchases

317

BS-8: HVAC Modeling and Simulation  

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

BS-8: HVAC Modeling and Simulation BS-8: HVAC Modeling and Simulation Speaker(s): Darko Sucic Date: December 5, 2001 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Satkartar K. Kinney Industry Foundation Classes (IFC), an object data model of buildings, are being developed by the International Alliance for Interoperability (IAI) to support data sharing and exchange in the building and construction industry. The IAI, founded in 1995, has published four releases of IFC so far. Several prototype implementations by leading software companies show that commercial IFC software is beginning to meet end user expectations of interoperability in the industry. BS-8 is an LBNL project that started last summer. It is developing the IFC HVAC extension schemata that will extend the IFC object data model and support the exchange of HVAC information

318

HVAC Energy Recovery Design and Economic Evaluation  

E-Print Network (OSTI)

ENRECO has prepared this paper on HVAC energy recovery to provide the engineer with an overview of the design engineering as well as the economic analysis considerations necessary to evaluate the potential benefits of energy recovery.

Kinnier, R. J.

1979-01-01T23:59:59.000Z

319

Wireless Demand Response Controls for HVAC  

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

Wireless Demand Response Controls for HVAC Speaker(s): Clifford Federspiel Date: June 22, 2006 - 12:00pm Location: 90-3148 Seminar HostPoint of Contact: Richard Diamond Peng Xu We...

320

Modeling particle deposition on HVAC heat exchangers  

E-Print Network (OSTI)

DEPOSITION ON HVAC HEAT EXCHANGERS JA Siegel 1,3 * and WWof fin-and-tube heat exchangers by particle deposition leadsparticle deposition on heat exchanger surfaces. We present a

Siegel, J.A.; Nazaroff, W.W.

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac systems volume" 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

Optimizing HVAC Control to Improve Building Comfort and Energy Performance  

E-Print Network (OSTI)

This paper demonstrates the benefits of optimal control in well-designed and operated buildings using a case study. The case study building was built in 2001. The HVAC and control systems have been installed with state-of-the-art equipment which include a terminal box temperature integrated minimum airflow reset. The building has been used and operated based on the design intents. This paper presents both the existing and the optimal control schedules, which include the VAV box operation schedule, AHUs optimal control, chiller and chilled water pump control, and boiler and hot water pump control. The measured hourly HVAC electricity consumption shows that annual savings of up to 40% can be achieved with an optimal control schedule.

Song, L.; Joo, I.; Dong, D.; Liu, M.; Wang, J.; Hansen, K.; Quiroz, L.; Swiatek, A.

2003-01-01T23:59:59.000Z

322

An Evaluation of the HVAC Load Potential for Providing Load Balancing Service  

Science Conference Proceedings (OSTI)

This paper investigates the potential of providing aggregated intra-hour load balancing services using heating, ventilating, and air-conditioning (HVAC) systems. A direct-load control algorithm is presented. A temperature-priority-list method is used to dispatch the HVAC loads optimally to maintain consumer-desired indoor temperatures and load diversity. Realistic intra-hour load balancing signals were used to evaluate the operational characteristics of the HVAC load under different outdoor temperature profiles and different indoor temperature settings. The number of HVAC units needed is also investigated. Modeling results suggest that the number of HVACs needed to provide a {+-}1-MW load balancing service 24 hours a day varies significantly with baseline settings, high and low temperature settings, and the outdoor temperatures. The results demonstrate that the intra-hour load balancing service provided by HVAC loads meet the performance requirements and can become a major source of revenue for load-serving entities where the smart grid infrastructure enables direct load control over the HAVC loads.

Lu, Ning

2012-09-30T23:59:59.000Z

323

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

324

Building Technologies Office: HVAC Optimized Heat Exchangers Research  

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

Optimized Heat Optimized Heat Exchangers Research Project to someone by E-mail Share Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Facebook Tweet about Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Twitter Bookmark Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Google Bookmark Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Delicious Rank Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Digg Find More places to share Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on AddThis.com... About Take Action to Save Energy Partner with DOE Activities Appliances Research Building Envelope Research

325

Co-simulation for performance prediction of integrated building and HVAC systems - An analysis of solution characteristics using a two-body system  

E-Print Network (OSTI)

system related specic heat capacity heat transfer coecientC i is the overall heat capacity, K i U i A i , where U i isow, c p is the specic heat capacity of the working uid and g

Trcka, Marija

2010-01-01T23:59:59.000Z

326

Building Technologies Office: HVAC and Water Heater Field Tests Research  

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

HVAC and Water Heater HVAC and Water Heater Field Tests Research Project to someone by E-mail Share Building Technologies Office: HVAC and Water Heater Field Tests Research Project on Facebook Tweet about Building Technologies Office: HVAC and Water Heater Field Tests Research Project on Twitter Bookmark Building Technologies Office: HVAC and Water Heater Field Tests Research Project on Google Bookmark Building Technologies Office: HVAC and Water Heater Field Tests Research Project on Delicious Rank Building Technologies Office: HVAC and Water Heater Field Tests Research Project on Digg Find More places to share Building Technologies Office: HVAC and Water Heater Field Tests Research Project on AddThis.com... About Take Action to Save Energy Partner with DOE Activities Appliances Research

327

Building Technologies Office: Recovery Act-Funded HVAC Research Projects  

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

HVAC Research Projects to someone by E-mail HVAC Research Projects to someone by E-mail Share Building Technologies Office: Recovery Act-Funded HVAC Research Projects on Facebook Tweet about Building Technologies Office: Recovery Act-Funded HVAC Research Projects on Twitter Bookmark Building Technologies Office: Recovery Act-Funded HVAC Research Projects on Google Bookmark Building Technologies Office: Recovery Act-Funded HVAC Research Projects on Delicious Rank Building Technologies Office: Recovery Act-Funded HVAC Research Projects on Digg Find More places to share Building Technologies Office: Recovery Act-Funded HVAC Research Projects on AddThis.com... About Take Action to Save Energy Partner with DOE Activities Appliances Research Building Envelope Research Windows, Skylights, & Doors Research Space Heating & Cooling Research

328

Recovery Act-Funded HVAC projects | Department of Energy  

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

HVAC projects Recovery Act-Funded HVAC projects The U.S. Department of Energy was allocated funding from the American Recovery and Reinvestment Act to conduct research into...

329

Issue #3: HVAC Proper Installation Energy Savings: Over-Promising...  

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

3: HVAC Proper Installation Energy Savings: Over-Promising or Under-Delivering? Issue 3: HVAC Proper Installation Energy Savings: Over-Promising or Under-Delivering? What energy...

330

Modeling and simulation of HVAC Results in EnergyPlus  

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

Modeling and simulation of HVAC Results in EnergyPlus Title Modeling and simulation of HVAC Results in EnergyPlus Publication Type Journal Article LBNL Report Number LBNL-5564E...

331

Fouling of HVAC fin and tube heat exchangers  

E-Print Network (OSTI)

Methods to Maintain Heat Exchanger Coil Cleanliness, ASHRAEof HVAC Fin and Tube Heat Exchangers Jeffrey Siegel and VanOF HVAC FIN AND TUBE HEAT EXCHANGERS Jeffrey Siegel 1,2 and

Siegel, Jeffrey; Carey, Van P.

2001-01-01T23:59:59.000Z

332

Comparing Maintenance Costs of Geothermal Heat Pump Systems with other HVAC Systems in Lincoln Public Schools: Repair, Service, and Corrective Actions  

DOE Green Energy (OSTI)

The Lincoln Public School District, in Lincoln, Nebraska, recently installed vertical-bore geothermal heat pump systems in four, new, elementary schools. Because the district has consistent maintenance records and procedures, it was possible to study repair, service and corrective maintenance requests for 20 schools in the district. Each school studied provides cooling to over 70% of its total floor area and uses one of the following heating and cooling systems: vertical-bore geothermal heat pumps (GHPs), air-cooled chiller with gas-fired hot water boiler (ACUGHWB), water-cooled chiller with gas-fired hot water boiler (WCCYGHWB), or water-cooled chiller with gas-fired steam boiler (WCUGSB). Preventative maintenance and capital renewal activities were not included in the available database. GHP schools reported average total costs at 2.13 cents/ft{sup 2}-yr, followed by ACC/GHWB schools at 2.88 cents/ft{sup 2}-yr, WCC/GSB schools at 3.73 cents/ft{sup 2}-yr, and WCC/GHWB schools at 6.07 cents/ft{sup 2}-yr. Because of tax-exemptions on material purchases, a reliance on in-house labor, and the absence of preventative maintenance records in the database, these costs are lower than those reported in previous studies. A strong relationship (R{sup 2}=O.52) was found between costs examined and cooling system age: the newer the cooling equipment, the less it costs to maintain.

Martin, M.A.; Durfee, D.J.; Hughes, P.J.

1999-06-19T23:59:59.000Z

333

Comparing maintenance costs of geothermal heat pump systems with other HVAC systems in Lincoln public schools: Repair, service, and corrective actions  

SciTech Connect

The Lincoln Public School District, in Lincoln, Nebraska, recently installed vertical-bore geothermal heat pump systems in four new elementary schools. Because the district has consistent maintenance records and procedures, it was possible to study repair, service, and corrective maintenance requests for 20 schools in the district. Each school studied provides cooling to over 70% of its total floor area and uses one of the following heating and cooling systems: vertical-bore geothermal heat pumps (GHPs), air-cooled chiller with gas-fired hot water boiler (ACC/GHWB), water-cooled chiller with gas-fired hot water boiler (WCC/GHWB), or water-cooled chiller with gas-fired steam boiler (WCC/GSB). Preventative maintenance and capital renewal activities were not included in the available database. GHP schools reported average total costs at 2.13{cents}/ft{sup 2}-yr, followed by ACC/GHWB schools at 2.884{cents}/ft{sup 2}-yr, WCC/GSB schools at 3.73{cents}/ft{sup 2}-yr, and WCC/GHWB schools at 6.07{cents}/ft{sup 2}-yr. Because of tax exemptions on material purchases, a reliance on in-house labor, and the absence of preventative maintenance records in the database, these costs are lower than those reported in previous studies. A strong relationship (R{sup 2} = 0.52) was found between costs examined and cooling system age: the newer the cooling equipment, the less it costs to maintain.

Martin, M.A.; Durfee, D.J.; Hughes, P.J.

1999-07-01T23:59:59.000Z

334

Handover Performance of HVAC Duct Based Indoor Wireless Networks  

E-Print Network (OSTI)

Handover Performance of HVAC Duct Based Indoor Wireless Networks A. E. Xhafa, P. Sonthikorn, and O in indoor wireless net- works (IWN) that use heating, ventilation, and air conditioning (HVAC) ducts.e., new call blocking and handover dropping probabilities, of an IWN that uses HVAC ducts are up to 6

Stancil, Daniel D.

335

Monitoring-based HVAC Commissioning of an Existing Office  

E-Print Network (OSTI)

LBNL-5940E Monitoring-based HVAC Commissioning of an Existing Office Building for Energy Efficiency thereof or The Regents of the University of California. #12;1 Monitoring-based HVAC Commissioning@lbl.gov, Tel: 1-510-486-4921 Abstract The performance of Heating, Ventilation and Air Conditioning (HVAC

336

Atmospheric Environment 41 (2007) 31513160 Ozone removal by HVAC filters  

E-Print Network (OSTI)

Atmospheric Environment 41 (2007) 3151­3160 Ozone removal by HVAC filters P. Zhao, J.A. Siegel�, R May 2006; accepted 14 June 2006 Abstract Residential and commercial HVAC filters that have been loaded of the relative importance of HVAC filters as a removal mechanism for ozone in residential and commercial

Siegel, Jeffrey

337

An update on acoustics designs for HVAC (Engineering) K. Marriott  

E-Print Network (OSTI)

An update on acoustics designs for HVAC (Engineering) K. Marriott IOA, 29a Ashburton Road, Croydon and Air Conditioning (HVAC) engineer is to engineer ways for keeping these factors under control the HVAC engineer's environmental requirements while minimizing noise generated in the process considering

Paris-Sud XI, Université de

338

Department of Mechanical Engineering Spring 2012 HVAC Filter Sensor -Global  

E-Print Network (OSTI)

PENNSTATE Department of Mechanical Engineering Spring 2012 HVAC Filter Sensor - Global Overview The purpose of this project is to develop a heating, ventilation, and air conditioning (HVAC) monitoring a residential, forced flow, multi-zone HVAC filter needs to be replaced, and then alerts the users

Demirel, Melik C.

339

SMUD's HVAC Programs Ravi Patel-Program Planning  

E-Print Network (OSTI)

1 SMUD's HVAC Programs 5-7-13 Ravi Patel- Program Planning Bruce Baccei- R&D #12;SMUD's Residential contractors trained and BPI certified ­ Majority were pushing only HVAC; now driving the HPP · Program encourages more HVAC replacements to occur through HPP ­ Move away from stand alone programs ­ Start

California at Davis, University of

340

Continued on next page A letter explaining the 2005 HVAC  

E-Print Network (OSTI)

Continued on next page A letter explaining the 2005 HVAC Change-out to consumers is available this bulletin, or downloaded from the 2005 HVAC Change out Information website at: www.energy.ca.gov/title24 duct sealing requirements for HVAC change-outs in existing homes become effective October 1, 2005

Note: This page contains sample records for the topic "hvac systems volume" 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

Proceedings: Indoor Air 2005 OZONE REMOVAL BY RESIDENTIAL HVAC FILTERS  

E-Print Network (OSTI)

Proceedings: Indoor Air 2005 2366 OZONE REMOVAL BY RESIDENTIAL HVAC FILTERS P Zhao1,2 , JA Siegel1, Austin, Texas 78758, USA ABSTRACT HVAC filters have a significant influence on indoor air quality% for Filter #2 at a face velocity of 0.81 cm/s. The potential for HVAC filters to affect ozone concentrations

Siegel, Jeffrey

342

Occupancy Based Demand Response HVAC Control Strategy Varick L. Erickson  

E-Print Network (OSTI)

proposes an HVAC control strategy based on occupancy prediction and real time occupancy monitoring via simulation model. We dis- cuss the building parameters and the HVAC control strate- gies used for the energyOccupancy Based Demand Response HVAC Control Strategy Varick L. Erickson University of California

Cerpa, Alberto E.

343

Critical Question #4: What are the Best Off-the-Shelf HVAC Solutions for  

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

Critical Question #4: What are the Best Off-the-Shelf HVAC Critical Question #4: What are the Best Off-the-Shelf HVAC Solutions for Low-Load, High-Performance Homes and Apartments? Critical Question #4: What are the Best Off-the-Shelf HVAC Solutions for Low-Load, High-Performance Homes and Apartments? What is currently in the market? What are the limitations of these systems? What are the desired specifications for these systems? What are the realistic space conditioning loads of these high-performance homes and apartments? cq4_forced_air_systems_walker.pdf cq4_simplified_space_cond_prahl.pdf cq4_ground_heat_exchanger_im.pdf More Documents & Publications Track C - Market-Driven Research Solutions Track B - Critical Guidance for Peak Performance Homes Energy Storage & Power Electronics 2008 Peer Review - Power Electronics

344

Realt-Time Building Occupancy Sensing for Supporting Demand Driven HVAC Operations  

E-Print Network (OSTI)

Accurate knowledge of localised and real-time occupancy numbers can have compelling control applications for Heating, Ventilation and Air-conditioning (HVAC) systems. However, a precise and reliable measurement of occupancy still remains difficult. Existing technologies are plagued with a number of issues ranging from unreliable data, maintaining privacy and sensor drift. More effective control of HVAC systems may be possible using a smart sensing network for occupancy detection. A low-cost and non-intrusive sensor network is deployed in an open-plan office, combining information such as sound level and motion, to estimate occupancy numbers, while an infrared camera is implemented to establish ground truth occupancy levels. Symmetrical uncertainty analysis is used for feature selection, and selected multi-sensory features are fused using a neuralnetwork model, with occupancy estimation accuracy reaching up to 84.59%. The proposed system offers promising opportunities for reliable occupancy sensing, capable of supporting demand driven HVAC operations.

Ekwevugbe, T.; Brown, N.; Pakka, V.

2013-01-01T23:59:59.000Z

345

Occupancy based demand response HVAC control strategy  

Science Conference Proceedings (OSTI)

Heating, cooling and ventilation accounts for 30% energy usage and for 50% of the electricity usage in the United States. Currently, most modern buildings still condition rooms assuming maximum occupancy rather than actual usage. As a result, rooms are ... Keywords: HVAC, demand response, energy savings, occupancy, ventilation

Varick L. Erickson; Alberto E. Cerpa

2010-11-01T23:59:59.000Z

346

This paper has been downloaded from the Building and Environmental Thermal Systems Research Group at Oklahoma State University (www.hvac.okstate.edu)  

E-Print Network (OSTI)

: Facility Design", ASHRAE Transactions. 109(2):151-159. Reprinted by permission from ASHRAE Transactions-Conditioning Engineers, Inc. (www.ashrae.org). Reprinted by permission from ASHRAE Transactions 2003, Volume 109, Part 2. This paper may not be copied nor distributed in either paper or digital form without ASHRAE's permission

347

Building America Best Practices Series Vol. 14: Energy Renovations - HVAC: A Guide for Contractors to Share with Homeowners  

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

HVAC HVAC A Guide for Contractors to Share with Homeowners PREPARED BY Pacific Northwest National Laboratory & Oak Ridge National Laboratory August 2011 August 2011 * PNNL-20421 BUILDING AMERICA BEST PRACTICES SERIES VOLUME 14. R BUILDING AMERICA BEST PRACTICES SERIES Energy Renovations Volume 14: HVAC A Guide for Contractors to Share with Homeowners Prepared by Pacific Northwest National Laboratory Program Manager: Michael C. Baechler Theresa L. Gilbride, Michael C. Baechler, Marye G. Hefty, and James R. Hand and Oak Ridge National Laboratory Pat M. Love August 2011 Prepared for the U.S. Department of Energy Building America Program PNNL-20421 Pacific Northwest National Laboratory Richland, Washington 99352 Contract DE-AC05-76RLO 1830 This report was prepared as an account of work sponsored by an agency of the

348

Creating a Virtual HVAC Laboratory for Continuing/Distance Education  

E-Print Network (OSTI)

Facilities engineering is one technical field where lab-based continuing education programs can be delivered in a distance learning format. The widespread use of computer controls for optimizing the efficiency of a building's mechanical and electrical systems has made the "distance" element possible. Rather than traveling to individual buildings to make pressure, temperature, and flow measurements in person, facility engineers routinely access performance data over the Internet. This networking capability has been used in an educational setting to deliver interactive technical training to large numbers of undergraduate students and professional facilities engineers. Many students can access real time data from a single piece of HVAC equipment over the Internet.

William J. Hutzel

2001-01-01T23:59:59.000Z

350

IFC HVAC interface to EnergyPlus - A case of expanded interoperability for energy simulation  

SciTech Connect

Tedious manual input of data that define a building, its systems and its expected pattern of use and operating schedules for building energy performance simulation has in the past diverted time and resources from productive simulation runs. In addition to its previously released IFCtoIDF utility that semiautomates the import of building geometry, the new IFC HVAC interface to EnergyPlus (released at the end of 2003) makes it possible to import and export most of the data that define HVAC equipment and systems in a building directly from and to other IFC compatible software tools. This reduces the manual input of other data needed for successful simulation with EnergyPlus to a minimum. The main purpose of this new interface is to enable import of HVAC equipment and systems definitions, generated by other IFC compatible software tools (such as HVAC systems design tools) and data bases, into EnergyPlus, and to write such definitions contained in EnergyPlus input files to the original IFC files from which building geometry was extracted for the particular EnergyPlus input. In addition, this interface sets an example for developers of other software tools how to import and/or export data other than building geometry from and/or into EnergyPlus. This paper describes the necessary simplifications and shortcuts incorporated in this interface, its operating environment, interface architecture, and the basic conditions and methodology for its use with EnergyPlus.

Bazjanac, Vladimir; Maile, Tobias

2004-03-29T23:59:59.000Z

351

Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger  

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

Radial Air Bearing Radial Air Bearing Heat Exchanger Research Project to someone by E-mail Share Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Facebook Tweet about Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Twitter Bookmark Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Google Bookmark Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Delicious Rank Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Digg Find More places to share Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on AddThis.com... About Take Action to Save Energy Partner with DOE

352

This paper has been downloaded from the Building and Environmental Thermal Systems Research Group at Oklahoma State University (http://www.hvac.okstate.edu).  

E-Print Network (OSTI)

"model execution, data gathering, analysis prediction, and control algo- rithms."4 The model-based control systems presented in two of the papers here are partial realizations of the DDDAS concept. AnotherThis paper has been downloaded from the Building and Environmental Thermal Systems Research Group

353

Review of the aquifer seasonal thermal energy storage building HVAC system at the Melville, New York, Mid-Island Mail Facility  

DOE Green Energy (OSTI)

The successful widespread commercialization of aquifer thermal energy storage (ATES) in the United States will depend on the effectiveness with which the experiences gained from early full-scale systems are used as guides in the design, installation and operation of future projects. One such early system from which both anecdotal and quantitative information is available is the Mid-Island Postal Facility in Melville, New York. At this facility, built in the mid-1980s, an ATES system has been integrated with the building's central heating and cooling plant. Cold'' wells are charged with water that is cooled during the winter by heat pump and closed circuit cooler operation. Water from these cold wells is then used to meet the facility's cooling load during the summer, before being pumped back into the ground at Warm'' wells. Dehumidification during summer operation is accomplished by a liquid desiccant system that uses propane boilers to provide a heat source for desiccant regeneration. This system will also add water to the air during periods of low humidity. This paper provides an overview of the project, and describes the analysis being performed to assess energy and economic merits of this innovative system.

Marseille, T.J.; Wilke, D.A.

1992-08-01T23:59:59.000Z

354

Review of the aquifer seasonal thermal energy storage building HVAC system at the Melville, New York, Mid-Island Mail Facility  

DOE Green Energy (OSTI)

The successful widespread commercialization of aquifer thermal energy storage (ATES) in the United States will depend on the effectiveness with which the experiences gained from early full-scale systems are used as guides in the design, installation and operation of future projects. One such early system from which both anecdotal and quantitative information is available is the Mid-Island Postal Facility in Melville, New York. At this facility, built in the mid-1980s, an ATES system has been integrated with the building`s central heating and cooling plant. ``Cold`` wells are charged with water that is cooled during the winter by heat pump and closed circuit cooler operation. Water from these cold wells is then used to meet the facility`s cooling load during the summer, before being pumped back into the ground at ``Warm`` wells. Dehumidification during summer operation is accomplished by a liquid desiccant system that uses propane boilers to provide a heat source for desiccant regeneration. This system will also add water to the air during periods of low humidity. This paper provides an overview of the project, and describes the analysis being performed to assess energy and economic merits of this innovative system.

Marseille, T.J.; Wilke, D.A.

1992-08-01T23:59:59.000Z

355

BFRL: HVAC&R - Publications  

Science Conference Proceedings (OSTI)

... Air conditioning; Refrigerating system; Evaporator; Finned tube; Modeling; Optimization; R600a; R410A; Propane; R32; R134a; R22; Comparison. ...

356

BFRL: HVAC&R - Publications  

Science Conference Proceedings (OSTI)

... were within ±5% of the tested values for six of the mixed systems, and four of the SEER predictions were within ±5% of the tested SEERs. ...

357

BFRL: HVAC&R - Publications  

Science Conference Proceedings (OSTI)

... and commercialization in 1936, R-22 has been applied in systems ranging from the smallest window air conditioners to the largest chillers and heat ...

358

Pedernales Electric Cooperative - HVAC Rebate Program | Department of  

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

Pedernales Electric Cooperative - HVAC Rebate Program Pedernales Electric Cooperative - HVAC Rebate Program Pedernales Electric Cooperative - HVAC Rebate Program < Back Eligibility Commercial Residential Commercial Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Heat Pumps Program Info State Texas Program Type Utility Rebate Program Utility Rebate Program Rebate Amount Central AC with Gas Furnace: $300 - $400/unit Heat Pump: $400 - $500/unit Dual-Fuel Heat Pump: $400 - $500/unit Geothermal Heat Pump: $1,000/unit Water-Source Heat Pump: $1,000/unit Provider Pedernales Electric Cooperative Pedernales Electric Cooperative offers equipment rebates to members who install energy efficient HVAC equipment. Eligible equipment includes:

359

Columbia Water & Light- HVAC and Lighting Efficiency Rebates  

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

Columbia Water & Light (CWL) offers rebates to its commercial and industrial customers for the purchase of high efficiency HVAC installations and efficient lighting. Incentives for certain...

360

Algoritmi per la previsione del carico in applicazioni HVAC.  

E-Print Network (OSTI)

??Il lavoro si pone come obiettivo l’applicazione di metodi e algoritmi per la previsione del carico in sistemi HVAC (Heating, Ventilating and Air Conditioning). La… (more)

Simmini, Francesco

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac systems volume" 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

Deposition of biological aerosols on HVAC heat exchangers  

E-Print Network (OSTI)

Methods to Maintain Heat Exchanger Coil Cleanliness. ASHRAEEngineering Foundation on Heat Exchanger Fouling, UnitedAerosols on HVAC Heat Exchangers Jeffrey Siegel and Iain

Siegel, Jeffrey; Walker, Iain

2001-01-01T23:59:59.000Z

362

Deposition of biological aerosols on HVAC heat exchangers  

E-Print Network (OSTI)

Methods to Maintain Heat Exchanger Coil Cleanliness. ASHRAEEngineering Foundation on Heat Exchanger Fouling, Unitedof HVAC Fin and Tube Heat Exchangers, To be published in the

Siegel, Jeffrey; Walker, Iain

2001-01-01T23:59:59.000Z

363

NREL Delivers In-Home HVAC Efficiency Testing Solutions (Fact...  

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

Delivers In-Home HVAC Efficiency Testing Solutions Researchers at the National Renewable Energy Laboratory (NREL) have recently developed two simple in-home efficiency test methods...

364

IFC HVAC interface to EnergyPlus - A case of expanded interoperability for energy simulation  

E-Print Network (OSTI)

D. Sucic and P. Xu. 2002. HVAC Component Data Modeling Using2001. BS-8 project: IFC HVAC extension schemata. http://IFC HVAC INTERFACE TO ENERGYPLUS – A CASE OF EXPANDED

Bazjanac, Vladimir; Maile, Tobias

2004-01-01T23:59:59.000Z

365

Uncertainties in Achieving Energy Savings from HVAC Maintenance Measures in the Field  

E-Print Network (OSTI)

Uncertainties in Achieving Energy Savings from HVAC Maintenance Measures in the Field Kristin Group, Davis, CA, USA 4 Southern California Edison, Irwindale, CA, USA ABSTRACT HVAC maintenance utilities across the nation to include HVAC maintenance measures in energy efficiency programs

California at Davis, University of

366

HVAC Equipment Design Options for Near-Zero-Energy Homes (NZEH) -A Stage 2 Scoping Assessment  

SciTech Connect

Although the energy efficiency of heating, ventilating, and air-conditioning (HVAC) equipment has increased substantially in recent years, new approaches are needed to continue this trend. Conventional unitary equipment and system designs have matured to a point where cost-effective, dramatic efficiency improvements that meet near-zero-energy housing (NZEH) goals require a radical rethinking of opportunities to improve system performance. The large reductions in HVAC energy consumption necessary to support the NZEH goals require a systems-oriented analysis approach that characterizes each element of energy consumption, identifies alternatives, and determines the most cost-effective combination of options. In particular, HVAC equipment must be developed that addresses the range of special needs of NZEH applications in the areas of reduced HVAC and water heating energy use, humidity control, ventilation, uniform comfort, and ease of zoning. This report describes results of a scoping assessment of HVAC system options for NZEH homes. ORNL has completed a preliminary adaptation, for consideration by The U.S. Department of Energy, Energy Efficiency and Renewable Energy Office, Building Technologies (BT) Program, of Cooper's (2001) stage and gate planning process to the HVAC and Water Heating element of BT's multi-year plan, as illustrated in Figure 1. In order to adapt to R&D the Cooper process, which is focused on product development, and to keep the technology development process consistent with an appropriate role for the federal government, the number and content of the stages and gates needed to be modified. The potential federal role in technology development involves 6 stages and 7 gates, but depending on the nature and status of the concept, some or all of the responsibilities can flow to the private sector for product development beginning as early as Gate 3. In the proposed new technology development stage and gate sequence, the Stage 2 'Scoping Assessment' provides the deliverable leading into the Gate 3 'Scoping Assessment Screen'. This report is an example of a Stage 2 deliverable written to document the screening of options against the Gate 3 criteria and to support DOE decision making and option prioritization. The objective of this scoping assessment was to perform a transparent evaluation of the HVAC system options for NZEH based on the applying the Gate 3 criteria uniformly to all options.

Baxter, Van D [ORNL

2005-11-01T23:59:59.000Z

367

Blend surfaces for set theoretic volume modelling systems  

Science Conference Proceedings (OSTI)

Most volume modelling systems are very limited in the complexity of the surfaces which they support. This is satisfactory for basic models of most mechanical components, since the functional surfaces are not usually complex. However, there are often ... Keywords: computer aided design, curved surfaces, ray tracing, volume modelling

Alan E. Middleditch; Kenneth H. Sears

1985-07-01T23:59:59.000Z

368

This paper has been downloaded from the Building and Environmental Thermal Systems Research Group at Oklahoma State University (http://www.hvac.okstate.edu).  

E-Print Network (OSTI)

) target of butanol or deuterated butanol, which is cooled by a powerful dilution refrigerator this meant that the target material be as radiation resistant as possible and that the refrigerator has high group polarizeable material in conjunction with a "He evapora- tion refrigerator, a large pumping system

369

This paper has been downloaded from the Building and Environmental Thermal Systems Research Group at Oklahoma State University (www.hvac.okstate.edu)  

E-Print Network (OSTI)

building that utilizes radiant heating/cooling systems to provide indoor environ- mental control validated by comparing measured data with results predicted by the model for a radiantly heated and cooled predicted by a carefully tunedEnergyPlus model. On the other hand, a high degree ofuncertainty in either

370

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

Science Conference Proceedings (OSTI)

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

2001-12-21T23:59:59.000Z

371

Abstract--The Danish power system starts to face problems of integrating thousands megawatts of wind power, which produce  

E-Print Network (OSTI)

the best HVAC transmission line for long distance applications. Compared to HVDC systems, the benefits

Bak-Jensen, Birgitte

372

SIMULATION AND EXPERIMENTAL VALIDATION OF AIRBORNE AND STRUCTURE-BORNE NOISE TRANSMISSION IN HVAC PLENUMS.  

E-Print Network (OSTI)

??This research demonstrates the usage of numerical acoustics to model sound and vibrational energy propagation in HVAC ducts and plenums. Noise and vibration in HVAC… (more)

Ramalingam, Srinivasan

2012-01-01T23:59:59.000Z

373

Industrial HVAC Air-to-Air Energy Recovery Retrofit Economics  

E-Print Network (OSTI)

Retrofitting air-to-air energy recovery equipment is relatively simply to design and easy to install. Additionally, HVAC energy recovery is almost risk free when compared to process retrofit. Life cycle cost analysis is the best way to illustrate the economic attractiveness of retrofitting HVAC industrial energy recovery equipment.

Graham, E. L.

1980-01-01T23:59:59.000Z

374

Columbia Water and Light - HVAC and Lighting Efficiency Rebates |  

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

Columbia Water and Light - HVAC and Lighting Efficiency Rebates Columbia Water and Light - HVAC and Lighting Efficiency Rebates Columbia Water and Light - HVAC and Lighting Efficiency Rebates < Back Eligibility Commercial Industrial Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Heat Pumps Appliances & Electronics Commercial Lighting Lighting Maximum Rebate Lighting: 50% of invoiced cost up to $22,500 Program Info State Missouri Program Type Utility Rebate Program Rebate Amount HVAC Replacements: $570 - $3,770 Lighting: $300/kW reduction or half of project cost Provider Columbia Water and Light Columbia Water and Light (CWL) offers rebates to its commercial and industrial customers for the purchase of high efficiency HVAC installations and efficient lighting. Incentives for certain measures are based upon the

375

HVAC Right-Sizing Part 1: Calculating Loads  

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

Building America Building America Presented by: Mike Gestwick - National Renewable Energy Laboratory Arlan Burdick, Anthony Grisolia - IBACOS, a Building America Research Team HVAC Right-Sizing Part 1: Calculating Loads Thursday, April 28 11:00 a.m. - 12:00 p.m. Eastern Building Technologies Program Mike Gestwick michael.gestwick@nrel.gov Building America: Introduction April 28, 2011 Introduction to Building America * Reduce energy use in new and existing residential buildings * Promote building science and systems engineering / integration approach * "Do no harm": Ensure safety, health and durability are maintained or improved * Accelerate adoption of high performance technologies www.buildingamerica.gov 15 Industry Research Teams Habitat Cost Effective Energy Retrofit Program

376

Commercial Building HVAC Energy Usage in Semi-Tropical Climates  

E-Print Network (OSTI)

The design of heating and cooling equipment in semi-tropical climates presents some design considerations and limitations not so prevalent in temperate climates. In some cases, the heating season may be non-existent for all practical purposes. Another consideration is the high ventilation loads due to cooling the moist air prevalent in semi-tropical climates. This paper describes a computer program which assesses all the pertinent variables which comprise the annual heating and cooling energy requirements for commercial buildings. It is then suggested that this computer program would be valuable in determining the changes one could expect in annual energy usage by varying certain building design parameters. Secondly, a small office building actually constructed in Central Florida in which the author designed the Heating and Cooling HVAC system is described. Tradeoffs are presented showing the effects of changes in these building design parameters.

Worbs, H. E.

1987-01-01T23:59:59.000Z

377

Occupancy sensors for HVAC gaining in hotel industry  

SciTech Connect

The hotel industry is overcoming its skepticism as occupancy sensors with built-in thermistors to control heating, ventilating, and air conditioning (HVAC) units demonstrate their ability to cut energy costs as much as 30%. Despite the successful demonstrations and acceptance by Holiday Inn, some hotel managers of other chains continue to resist. Occupancy sensors have either ultrasonic or infrared signals, but differ from lighting control devices by also having internal thermistors and remote door switches. This allows the rooms to reach comfort levels only when the guest is present since occupants are only minimally affected if temperatures are modified during unoccupied periods. The system works best for roadside-type motels rather than convention hotels, where occupants are in and out of their rooms.

Ladd, C.

1985-12-02T23:59:59.000Z

378

Simulation of residential HVAC system performance  

E-Print Network (OSTI)

house in 16 California climate zones. The typical (base)weather data include all 16 climate Zones for the state ofwere performed for climate zones from 8 to 15 because other

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

2001-01-01T23:59:59.000Z

379

Simulation of residential HVAC system performance  

E-Print Network (OSTI)

by improving ducts (sealing air leaks) and equipment (sealing (to 12%), refrigerant charge addition (to 100%), and correction of air

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

2001-01-01T23:59:59.000Z

380

Wireless Demand Response Controls for HVAC Systems  

E-Print Network (OSTI)

Strategies Linking Demand Response and Energy Efficiency,”Fully Automated Demand Response Tests in Large Facilities,technical support from the Demand Response Research Center (

Federspiel, Clifford

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac systems volume" 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

Measuring Advances in HVAC Distribution System Design  

E-Print Network (OSTI)

thermal based index EDE and thermal energy end-use indices.Thus mechanical and thermal energy sources can be combinedproposed to assess thermal energy use in commercial building

Franconi, E.

2011-01-01T23:59:59.000Z

382

Wireless Demand Response Controls for HVAC Systems  

E-Print Network (OSTI)

the contribution of air-conditioning. Figure 2: WirelessIntroduction Commercial air-conditioning is one of thethe Cal ISO is commercial air-conditioning. One of the most

Federspiel, Clifford

2010-01-01T23:59:59.000Z

383

Wireless Demand Response Controls for HVAC Systems  

E-Print Network (OSTI)

two batteries, the annual cost of battery maintenance is $battery-powered zone temperature sensors can be added to any building at relatively low cost

Federspiel, Clifford

2010-01-01T23:59:59.000Z

384

Wireless Demand Response Controls for HVAC Systems  

E-Print Network (OSTI)

with the DRAS, which is a real-time price server originallyapplications. The DRAS is a real-time price server designed

Federspiel, Clifford

2010-01-01T23:59:59.000Z

385

Measuring Advances in HVAC Distribution System Design  

E-Print Network (OSTI)

part load ratio to chiller/cooling tower electric and boilerincludes the chiller, cooling tower, and circulation pumps.

Franconi, E.

2011-01-01T23:59:59.000Z

386

www.eia.gov  

U.S. Energy Information Administration (EIA)

HVAC Conservation Features Variable Air-Volume System ... Economizer Cycle ..... HVAC Maintenance ..... Energy Management and Equipment Usage Reduced ...

387

High-Temperature-High-Volume Lifting For Enhanced Geothermal Systems  

Open Energy Info (EERE)

Temperature-High-Volume Lifting For Enhanced Geothermal Systems Temperature-High-Volume Lifting For Enhanced Geothermal Systems Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title High-Temperature-High-Volume Lifting For Enhanced Geothermal Systems Project Type / Topic 1 Recovery Act: Enhanced Geothermal Systems Component Research and Development/Analysis Project Type / Topic 2 High-Temperature-High-Volume Lifting Project Description The proposed scope of work is divided into three Phases. Overall system requirements will be established in Phase 1, along with an evaluation of existing lifting system capability, identification of technology limitations, and a conceptual design of an overall lifting system. In developing the system components in Phase 2, component-level tests will be conducted using GE facilities. Areas of development will include high-temperature drive system materials, journal and thrust bearings, and corrosion and erosion-resistant lifting pump components. Finally, in Phase 3, the overall lab-scale lifting system will be demonstrated in a flow loop that will be constructed at GE Global Research.

388

Gosselin, J.R. and Chen, Q. 2008. "A dual airflow window for indoor air quality improvement and energy conservation in buildings," HVAC&R Research, 14(3), 359-372.  

E-Print Network (OSTI)

and energy conservation in buildings," HVAC&R Research, 14(3), 359-372. A Dual Airflow Window for Indoor Air. For commercial buildings IAQ can be regulated by the HVAC system that mixes fresh outdoor air with return air

Chen, Qingyan "Yan"

389

Integrated safety management system verification: Volume 2  

Science Conference Proceedings (OSTI)

Department of Energy (DOE) Policy (P) 450.4, Safety Management System Policy, commits to institutionalization of an Integrated Safety Management System (ISMS) throughout the DOE complex. The DOE Acquisition Regulations (DEAR, 48 CFR 970) requires contractors to manage and perform work in accordance with a documented Integrated Safety Management System (ISMS). Guidance and expectations have been provided to PNNL by incorporation into the operating contract (Contract DE-ACM-76FL0 1830) and by letter. The contract requires that the contractor submit a description of their ISMS for approval by DOE. PNNL submitted their proposed Safety Management System Description for approval on November 25,1997. RL tentatively approved acceptance of the description pursuant to a favorable recommendation from this review. The Integrated Safety Management System Verification is a review of the adequacy of the ISMS description in fulfilling the requirements of the DEAR and the DOE Policy. The purpose of this review is to provide the Richland Operations Office Manager with a recommendation for approval of the ISMS description of the Pacific Northwest Laboratory based upon compliance with the requirements of 49 CFR 970.5204(-2 and -78); and to verify the extent and maturity of ISMS implementation within the Laboratory. Further the review will provide a model for other DOE laboratories managed by the Office of Assistant Secretary for Energy Research.

Christensen, R.F.

1998-08-10T23:59:59.000Z

390

The effects of fixture type and HVAC integration on fluorescent lamp/ballast performance  

SciTech Connect

This paper describes the effects of fixture type and lamp compartment air extract characteristics on lamp/ballast performance. A luminaire/plenum/HVAC simulator was used to measure minimum lamp wall temperature inside four fixture types while varying lamp-compartment extract conditions. Experimental data show that the lumen output of the lamp/ballast system varies by 20% and system efficacy by 10%, depending on the type of fixture and lamp-compartment extract technique employed.

Siminovitch, M.J.; Rubinstein, F.M.; Verderber, R.R.; Clark, T.A.

1986-06-01T23:59:59.000Z

391

Power Shape Monitoring System (PSMS), Volume 1: Overview and Performance  

Science Conference Proceedings (OSTI)

Volume 1 provides an overview of the first-generation power shape monitoring system (PSMS) for BWRs, which has been undergoing field testing at the Oyster Creek nuclear plant. The system's functional requirements and its hardware and software are described. The accuracy of the Oyster Creek PSMS is evaluated--specifically, its power prediction capabilities.

1981-02-01T23:59:59.000Z

392

A multi-sensor based occupancy estimation model for supporting demand driven HVAC operations  

Science Conference Proceedings (OSTI)

Heating, ventilation, and air conditioning (HVAC) is a major energy consumer in buildings, and implementing demand driven HVAC operations is a way to reduce HVAC related energy consumption. This relies on the availability of occupancy information, which ... Keywords: HVAC, building energy consumption, demand driven, non-intrusive sensor, occupancy estimation

Zheng Yang; Nan Li; Burcin Becerik-Gerber; Michael Orosz

2012-03-01T23:59:59.000Z

393

Integrated safety management system verification: Volume 1  

SciTech Connect

Department of Energy (DOE) Policy (P) 450.4, Safety Management System Policy, commits to institutionalizing an Integrated Safety Management System (ISMS) throughout the DOE complex. The DOE Acquisition Regulations (DEAR 48 CFR 970) requires contractors to manage and perform work in accordance with a documented Integrated Safety Management System. The Manager, Richland Operations Office (RL), initiated a combined Phase 1 and Phase 2 Integrated Safety Management Verification review to confirm that PNNL had successfully submitted a description of their ISMS and had implemented ISMS within the laboratory facilities and processes. A combined review was directed by the Manager, RL, based upon the progress PNNL had made in the implementation of ISM. This report documents the results of the review conducted to verify: (1) that the PNNL integrated safety management system description and enabling documents and processes conform to the guidance provided by the Manager, RL; (2) that corporate policy is implemented by line managers; (3) that PNNL has provided tailored direction to the facility management; and (4) the Manager, RL, has documented processes that integrate their safety activities and oversight with those of PNNL. The general conduct of the review was consistent with the direction provided by the Under Secretary`s Draft Safety Management System Review and Approval Protocol. The purpose of this review was to provide the Manager, RL, with a recommendation to the adequacy of the ISMS description of the Pacific Northwest Laboratory based upon compliance with the requirements of 49 CFR 970.5204(-2 and -78); and, to provide an evaluation of the extent and maturity of ISMS implementation within the Laboratory. Further, this review was intended to provide a model for other DOE Laboratories. In an effort to reduce the time and travel costs associated with ISM verification the team agreed to conduct preliminary training and orientation electronically and by phone. These activities are normally conducted during a pre-visit trip to the site. The Team recommends approval of the Integrated Safety Management System Description subject to the resolution of the Areas of Concerns noted here.

Christensen, R.F.

1998-08-12T23:59:59.000Z

394

Self-Correcting HVAC Controls Project Final Report  

SciTech Connect

This document represents the final project report for the Self-Correcting Heating, Ventilating and Air-Conditioning (HVAC) Controls Project jointly funded by Bonneville Power Administration (BPA) and the U.S. Department of Energy (DOE) Building Technologies Program (BTP). The project, initiated in October 2008, focused on exploratory initial development of self-correcting controls for selected HVAC components in air handlers. This report, along with the companion report documenting the algorithms developed, Self-Correcting HVAC Controls: Algorithms for Sensors and Dampers in Air-Handling Units (Fernandez et al. 2009), document the work performed and results of this project.

Fernandez, Nicholas; Brambley, Michael R.; Katipamula, Srinivas; Cho, Heejin; Goddard, James K.; Dinh, Liem H.

2010-01-04T23:59:59.000Z

395

Comparisons of HVAC Simulations between EnergyPlus and DOE-2.2 for Data Centers  

SciTech Connect

This paper compares HVAC simulations between EnergyPlus and DOE-2.2 for data centers. The HVAC systems studied in the paper are packaged direct expansion air-cooled single zone systems with and without air economizer. Four climate zones are chosen for the study - San Francisco, Miami, Chicago, and Phoenix. EnergyPlus version 2.1 and DOE-2.2 version 45 are used in the annual energy simulations. The annual cooling electric consumption calculated by EnergyPlus and DOE-2.2 are reasonablely matched within a range of -0.4percent to 8.6percent. The paper also discusses sources of differences beween EnergyPlus and DOE-2.2 runs including cooling coil algorithm, performance curves, and important energy model inputs.

Hong, Tianzhen; Sartor, Dale; Mathew, Paul; Yazdanian, Mehry

2008-08-13T23:59:59.000Z

396

A Quasi-Dynamic HVAC and Building Simulation Methodology  

E-Print Network (OSTI)

This thesis introduces a quasi-dynamic building simulation methodology which complements existing building simulators by allowing transient models of HVAC (heating, ventilating and air-conditioning) systems to be created in an analogous way to their design and simulated in a computationally efficient manner. The methodology represents a system as interconnected, object-oriented sub-models known as components. Fluids and their local properties are modeled using discrete, incompressible objects known as packets. System wide pressure and flow rates are modeled similar to electrical circuit models. Transferring packets between components emulates fluid flow, while the system wide fluid circuit formed by the components' interconnections determines system wide pressures and flow rates. A tool named PAQS, after the PAacketized Quasi-dynamic Simulation methodology, was built to demonstrate the described methodology. Validation tests of PAQS found that its steady state energy use predictions differed less than 3% from a comparable steady state model. PAQS was also able to correctly model the transient behavior of a dynamic linear analytical system.

Davis, Clinton Paul

2012-05-01T23:59:59.000Z

397

Power Plant Electrical Reference Series, Volumes 1-16: Volume 1: Electric Generators; Volume 2: Power Transformers; Volume 3: Auxili ary System Planning; Volume 4: Wire and Cable; Volume 5: Grounding and Lightning Protection; Volume 6: Motors; Volume 7..  

Science Conference Proceedings (OSTI)

This comprehensive and practical guide to electric power apparatus and electrical phenomena provides an up-to-date source book for power plant managers, engineers, and operating personnel. Aiding in the recognition and prevention of potential problems, the 16-volume guide can help utilities save staff time and reduce operating expenses.

1988-05-01T23:59:59.000Z

398

Turbine-Generator Auxiliary Systems, Volume 2: Turbine Steam Seal System Maintenance Guide  

Science Conference Proceedings (OSTI)

The Turbine-Generator Auxiliary Systems, Volume 2: Turbine Steam Seal System Maintenance Guide provides nuclear and fossil plant personnel with operation and maintenance guidance on the turbine steam seal system components.

2006-12-14T23:59:59.000Z

399

Verification and validation guidelines for high integrity systems. Volume 1  

SciTech Connect

High integrity systems include all protective (safety and mitigation) systems for nuclear power plants, and also systems for which comparable reliability requirements exist in other fields, such as in the process industries, in air traffic control, and in patient monitoring and other medical systems. Verification aims at determining that each stage in the software development completely and correctly implements requirements that were established in a preceding phase, while validation determines that the overall performance of a computer system completely and correctly meets system requirements. Volume I of the report reviews existing classifications for high integrity systems and for the types of errors that may be encountered, and makes recommendations for verification and validation procedures, based on assumptions about the environment in which these procedures will be conducted. The final chapter of Volume I deals with a framework for standards in this field. Volume II contains appendices dealing with specific methodologies for system classification, for dependability evaluation, and for two software tools that can automate otherwise very labor intensive verification and validation activities.

Hecht, H.; Hecht, M.; Dinsmore, G.; Hecht, S.; Tang, D. [SoHaR, Inc., Beverly Hills, CA (United States)

1995-03-01T23:59:59.000Z

400

Connexus Energy - Residential Efficient HVAC Rebate Program | Department of  

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

Connexus Energy - Residential Efficient HVAC Rebate Program Connexus Energy - Residential Efficient HVAC Rebate Program Connexus Energy - Residential Efficient HVAC Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Heat Pumps Program Info Expiration Date 12/31/2013 State Minnesota Program Type Utility Rebate Program Rebate Amount Air Source Heat Pumps: $480 - $630 Ductless Heat Pump: $150 Geothermal Heat Pump: $200/ton Provider Connexus Energy Connexus Energy offers rebates for residential customers to improve the energy efficiency of homes. Rebates are available for air source heat pumps, ductless heat pumps and ground-source heat pumps. Equipment must meet all efficiency standards listed on the web site, and must be installed by a certified HVAC contractor. Contact Connexus Energy for other program

Note: This page contains sample records for the topic "hvac systems volume" 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

Strategy Guideline: Transitioning HVAC Companies to Whole House Performance Contractors  

Science Conference Proceedings (OSTI)

This report describes the findings from research IBACOS conducted related to heating, ventilation, and air conditioning (HVAC) companies who have made the decision to transition to whole house performance contracting (WHPC).

Burdick, A.

2012-05-01T23:59:59.000Z

402

DOE Convening Report on Certification of Commercial HVAC and...  

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

Convening Report on Certification of Commercial HVAC and CRE Products, October 2, 2012 1 U.S. DEPARTMENT OF ENERGY CONVENING REPORT ON THE FEASIBILITY OF A NEGOTIATED RULEMAKING TO...

403

Software-Based Building Airflow Analysis Tool for Enabling HVAC...  

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

Software-Based Building Airflow Analysis Tool for Enabling HVAC Energy Use Savings in Commercial Buildings Speaker(s): Don Wroblewski Date: March 8, 2013 - 12:00pm Location:...

404

Sound quality descriptors for HVAC equipment from ARI Standards  

Science Conference Proceedings (OSTI)

The Air Conditioning and Refrigeration Institute (ARI) has several standards that provide methods to evaluate the sound quality of heating ventilating and air?conditioning (HVAC) equipment. These include Standard 270 Sound rating of outdoor unitary equipment

2003-01-01T23:59:59.000Z

405

Adaptive Control and Fault Detection of HVAC Equipment in Commercial...  

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

Adaptive Control and Fault Detection of HVAC Equipment in Commercial Buildings Speaker(s): John Seem Date: February 27, 2002 - 12:00pm Location: Bldg. 90 Seminar HostPoint of...

406

Optimized HVAC Management Service to Enhance Demand Response  

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

Optimized HVAC Management Service to Enhance Demand Response Speaker(s): John Steinberg Date: August 18, 2011 - 12:00pm Location: 90-4133 Seminar HostPoint of Contact: Janie Page...

407

LBL-34045 UC-1600 Residential HVAC Data, Assumptions and Methodology  

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

5 UC-1600 Residential HVAC Data, Assumptions and Methodology for End-Use Forecasting with EPRI-REEPS 2.1 Francis X. Johnson, Richard E. Brown, James W. Hanford, Alan H. Sanstad and...

408

Ameren Illinois (Electric)- Custom, HVAC, and Motor Business Efficiency Incentives  

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

Prescriptive rebates are available for many HVAC and motor efficiency improvements. Pre-approval is required for all rebates. The programs are available only to non-residential customers that...

409

Case Studies of Grid-Connected Photovoltaic Systems, Volume 3  

Science Conference Proceedings (OSTI)

The photovoltaics industry is growing rapidly, and photovoltaic (PV) power is likely to become an increasingly significant source of distributed generation as its cost declines over the next ten years. This report completes a series of three volumes documenting more than a dozen grid-connected PV case studies in all and covering a broad range of system configurations and project types. The report provides field experience useful to improve the design of future PV systems and identifies problems that need...

2004-03-30T23:59:59.000Z

410

Preliminary systems design study assessment report. Volume 7, Subsystem concepts  

SciTech Connect

The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex`s Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each. This volume contains the descriptions and other relevant information of the four subsystems required for most of the ex situ processing systems. This volume covers the metal decontamination and sizing subsystem, soils processing subsystem, low-level waste subsystem, and retrieval subsystem.

Mayberry, J.L.; Feizollahi, F.; Del Signore, J.C.

1992-01-01T23:59:59.000Z

411

Conceptual design and systems analysis of photovoltaic systems. Volume II. Study results. Final report  

DOE Green Energy (OSTI)

This investigation of terrestrial PV systems considered the technical and economic feasibility for systems in three size categories: a small system of about 12 kW peak output for on-site residential use; a large 1500 MW central power plant contributing to the bulk energy of a utility system power grid; and an intermediate size system of about 250 kW for use on public or commercial buildings. In each category, conceptual designs were developed, performance was analyzed for a range of climatic regions, economic analyses were performed, and assessments were made of pertinent institutional issues. The report consists of three volumes. Volume I contains a Study Summary of the major study results. This volume contains the detailed results pertaining to on-site residential photovoltaic systems, central power plant photovoltaic systems, and intermediate size systems applied to commercial and public buildings. Volume III contains supporting appendix material. (WHK)

Kirpich, A.

1977-03-19T23:59:59.000Z

412

Influence Of Three Dynamic Predictive Clothing Insulation Models On Building Energy Use, HVAC Sizing And Thermal Comfort  

E-Print Network (OSTI)

ON BUILDING ENERGY USE, HVAC SIZING AND THERMAL COMFORT aThe results showed that when the HVAC is controlled based onequipment sizing. When the HVAC is controlled based on the

Schiavon, Stefano; Lee, Kwang Ho

2013-01-01T23:59:59.000Z

413

Shared Communications: Volume 2. In-Depth Systems Research  

Science Conference Proceedings (OSTI)

This report is the second of two documents that examine the literature for actual examples of organizations and agencies that share communications resources. While the primary emphasis is on rural, intelligent transportation system (ITS) communications involving transit, examples will not be limited to rural activities, nor to ITS implementation, nor even to transit. In addition, the term ''communication'' will be broadly applied to include all information resources. The first document of this series, ''Shared Communications: Volume I. A Summary and Literature Review'', defines the meaning of the term ''shared communication resources'' and provides many examples of agencies that share resources. This document, ''Shared Communications: Volume II. In-Depth Systems Research'', reviews attributes that contributed to successful applications of the sharing communication resources concept. A few examples of each type of communication sharing are provided. Based on the issues and best practice realworld examples, recommendations for potential usage and recommended approaches for field operational tests are provided.

Truett, LF

2004-09-22T23:59:59.000Z

414

Hydrothermal energy extraction, Auburn, New York: Final report: Volume 2, Chapters 6-10  

DOE Green Energy (OSTI)

This paper discusses a hydrothermal energy extraction system in detail. General topics covered are: Reservoir circulation loop; HVAC buffer loop; and automatic temperature control system. (LSP)

Castor, T.P.

1988-03-01T23:59:59.000Z

415

State-of-the-art sports facility's HVAC  

SciTech Connect

This article describes the HVAC systems design to keep Cleveland's new Gateway sports and entertainment complex comfortable. This magnificent new facility embraces the 42,000-seat Jacobs Field, with its natural grass playing surface, and the 21,000-seat Arena at Gateway (the official name will be announced at its August 1 opening). The Arena is the new home of the Cleveland Cavaliers NBA basketball team and the Lumberjacks IHL ice hockey team. Other events that will be held here include arena football, circuses, ice shows, and concerts. It is anticipated that the Arena will be in use in excess of 200 days a year for these and other functions. The ballpark and the arena are separated by Gateway Plaza, a large illuminated public space that also will be the site of various entertainment events. An air conditioned pedestrian bridge, approximately 0.7 miles in length, connects the Arena with the Regional Transit Authority's downtown rapid transit station. Other enclosed walkways connect the Arena with two parking garages (3,158 vehicles total) and the larger garage with Jacobs Field.

Horton, M.K. (Gateway Sports Complex, Cleveland, OH (United States))

1994-08-01T23:59:59.000Z

416

Evaluation of flow capture techniques for measuring HVAC grilleairflows  

SciTech Connect

This paper discusses the accuracy of commercially available flow hoods for residential applications. Results of laboratory and field tests indicate these hoods can be inadequate to measure airflows in residential systems, and there can be large measurement discrepancies between different flow hoods. The errors are due to poor calibrations, sensitivity of the hoods to grille airflow non-uniformities, and flow changes from added flow resistance. It is possible to obtain reasonable results using some flow hoods if the field tests are carefully done, the grilles are appropriate, and grille location does not restrict flow hood placement. We also evaluated several simple flow capture techniques for measuring grille airflows that could be adopted by the HVAC industry and homeowners as simple diagnostics. These simple techniques can be as accurate as commercially available devices. Our test results also show that current calibration procedures for flow hoods do not account for field application problems. As a result, agencies such as ASHRAE or ASTM need to develop a new standard for flow hood calibration, along with a new measurement standard to address field use of flow capture techniques.

Walker, Iain S.; Wray, Craig P.

2002-11-01T23:59:59.000Z

417

Quantifying Volume Changing Perturbations in a Wave Chaotic System  

E-Print Network (OSTI)

A sensor was developed to quantitatively measure perturbations which change the volume of a wave chaotic cavity while leaving its shape intact. The sensors work in the time domain by using either scattering fidelity of the transmitted signals or time reversal mirrors. The sensors were tested experimentally by inducing volume changing perturbations to a one cubic meter mixed chaotic and regular billiard system. Perturbations which caused a volume change that is as small as 54 parts in a million were quantitatively measured. These results were obtained by using electromagnetic waves with a wavelength of about 5cm, therefore, the sensor is sensitive to extreme sub-wavelength changes of the boundaries of a cavity. The experimental results were compared with Finite Difference Time Domain (FDTD) simulation results, and good agreement was found. Furthermore, the sensor was tested using a frequency domain approach on a numerical model of the star graph, which is a representative wave chaotic system. These results open up interesting applications such as: monitoring the spatial uniformity of the temperature of a homogeneous cavity during heating up / cooling down procedures, verifying the uniform displacement of a fluid inside a wave chaotic cavity by another fluid, etc.

Biniyam Tesfaye Taddese; Gabriele Gradoni; Franco Moglie; Thomas M. Antonsen; Edward Ott; Steven M. Anlage

2012-08-27T23:59:59.000Z

418

Issue #7: What are the Best HVAC Solutions for Low-Load, High...  

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

7: What are the Best HVAC Solutions for Low-Load, High Performance Homes? Issue 7: What are the Best HVAC Solutions for Low-Load, High Performance Homes? What components and...

419

Critical Question #4: What are the Best Off-the-Shelf HVAC Solutions...  

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

Critical Question 4: What are the Best Off-the-Shelf HVAC Solutions for Low-Load, High-Performance Homes and Apartments? Critical Question 4: What are the Best Off-the-Shelf HVAC...

420

Optimized HVAC Management Service to Enhance Demand Response  

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

Optimized HVAC Management Service to Enhance Demand Response Optimized HVAC Management Service to Enhance Demand Response Speaker(s): John Steinberg Date: August 18, 2011 - 12:00pm Location: 90-4133 Seminar Host/Point of Contact: Janie Page Many utilities are investing vast sums deploying smart meters to customers, some of whom remain stubbornly opposed to those deployments, in large part because they remain unmoved by the claimed benefits. EcoFactor has developed a thermostat management service that delivers (and quantifies) significant energy savings for consumers and a number of additional benefits to other players in the energy value chain. It does so without relying on consumers to modify behavior, study energy information displays, or even pay attention to their energy use. EcoFactor also significantly boosts DR yield while it increases occupant comfort. It can identify HVAC

Note: This page contains sample records for the topic "hvac systems volume" 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

Ameren Illinois (Electric) - Custom, HVAC, and Motor Business Efficiency  

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

Ameren Illinois (Electric) - Custom, HVAC, and Motor Business Ameren Illinois (Electric) - Custom, HVAC, and Motor Business Efficiency Incentives Ameren Illinois (Electric) - Custom, HVAC, and Motor Business Efficiency Incentives < Back Eligibility Commercial Industrial Multi-Family Residential Nonprofit Savings Category Other Heating & Cooling Commercial Heating & Cooling Cooling Home Weatherization Construction Commercial Weatherization Design & Remodeling Manufacturing Sealing Your Home Ventilation Heat Pumps Heating Appliances & Electronics Commercial Lighting Lighting Water Heating Maximum Rebate $600,000/year/facility. Incentives $1-$200,000: paid at 100% Incentives $200,000-$600,000: paid at 50% Custom: 50% of incremental cost Retro-Commissioning: $200,000/year/facility; $100,000/project Leak Survey: $10,000

422

Aerosol Remote Duct-Sealing System - lbl.gov  

Available for licensing for fields of use other than sealing HVAC systems. REFERENCE NUMBER: IB-1029. SEE THESE ...

423

What are the Best HVAC Solutions for Low-Load, High Performance...  

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

What are the Best HVAC Solutions for Low Load, High Performance Homes? www.BuildingScience.com buildingscience.com...

424

Photovoltaic systems concept study. Volume IV. Final report  

DOE Green Energy (OSTI)

This report has been prepared in nine sections plus appendices, separated into five separate volumes. This volume contains three sections. Separate abstracts were prepared for each section. (MHR)

Not Available

1977-04-01T23:59:59.000Z

425

HVAC equipment replacement for best size and efficiency  

DOE Green Energy (OSTI)

The purpose of this project was to explore the potential benefits of HVAC equipment replacement for buildings owned by the City of Phoenix. The specific research objectives were as follows: Establishment an understanding of the magnitude and sources of saving available through equipment replacement; Establish an economic model for understanding equipment replacement and deciding when equipment should be replaced; Establish technical methods for calculating savings from replacement of various types of equipment; Demonstrate the replacement of a major item of HVAC equipment and document the savings through actual experimentation and measurement; and Provide guidance material for other jurisdictions wishing to investigate equipment replacement. 11 figs., 9 tabs.

Teji, D.S.

1988-02-01T23:59:59.000Z

426

High volume tidal or current flow harnessing system  

Science Conference Proceedings (OSTI)

Apparatus permitting the utilization of large volumes of water in the harnessing and extracting of a portion of the power generated by the rise and fall of ocean tides, ocean currents, or flowing rivers includes the provision of a dam, and a specialized single cavity chamber of limited size as compared with the water head enclosed by the dam, and an extremely high volume gating system in which all or nearly all of the water between the high and low levels on either side of the dam is cyclically gated through the single chamber from one side of the dam to the other so as to alternately provide positive air pressure and a partial vacuum within the single chamber. In one embodiment, the specialized chamber has a barrier at the bottom which divides the bottom of the chamber in half, large ports at the bottom of the chamber to permit inflow and outflow of high volumes of water, and ganged structures having a higher total area than that of corresponding ports, in which the structures form sluice gates to selectively seal off and open different sets of ports. In another embodiment, a single chamber is used without a barrier. In this embodiment, vertical sluice gates are used which may be activated automatically by pressures acting on the sluice gates as a result of ingested and expelled water.

Gorlov, A.M.

1984-08-07T23:59:59.000Z

427

Weather-clustering based strategy design for dynamic demand response building HVAC control  

Science Conference Proceedings (OSTI)

Energy consumption and room temperature can be simulated using EnergyPlus model, given the building model, weather information, and HVAC control strategy. For a given weather forecast, however, online simulation-based optimization of the HVAC control ... Keywords: EnergyPlus, building HVAC control strategy, clustering, dynamic demand response

Rui Liao; Geng Li; Shun Miao; Yan Lu; Jianmin Zhu; Ling Shen

2012-11-01T23:59:59.000Z

428

Fouling of HVAC Fin and Tube Heat Exchangers Jeffrey Siegel and Van P. Carey  

E-Print Network (OSTI)

LBNL-47668 Fouling of HVAC Fin and Tube Heat Exchangers Jeffrey Siegel and Van P. Carey CIEE ENDORSEMENT OF OR AGREEMENT WITH THESE FINDINGS, NOR THAT OF ANY CIEE SPONSOR. #12;FOULING OF HVAC in residential, commercial and industrial HVAC applications. Invariably, indoor and outdoor air contaminants foul

429

Comparison of dust from HVAC filters, indoor surfaces, and indoor air Federico Noris*  

E-Print Network (OSTI)

Comparison of dust from HVAC filters, indoor surfaces, and indoor air Federico Noris* , Kerry A and Environmental Engineering * Corresponding email: Fedenoris@mail.utexas.edu SUMMARY HVAC filters are long heavy metal (Pb, Cd and As) concentrations. HVAC filter microbial concentrations appear to be consistent

Siegel, Jeffrey

430

Theoretical Estimates of HVAC Duct Channel Capacity for High-Speed Internet Access  

E-Print Network (OSTI)

Theoretical Estimates of HVAC Duct Channel Capacity for High-Speed Internet Access Ariton E. Xhafa-conditioning (HVAC) ducts based on multi-carrier transmission that uses M-QAM mod- ulation and measured channel- flections in HVAC ducts). Our work also shows that data rates in excess of 300 Mbps are possible over

Stancil, Daniel D.

431

Comparison of HVAC filter test methods for particle removal efficiency Brent Stephens1,*  

E-Print Network (OSTI)

Comparison of HVAC filter test methods for particle removal efficiency Brent Stephens1,* , Jeffrey Introduction The use of HVAC filters in buildings is one strategy to reduce occupant exposure to particulate matter. However, HVAC filters are typically tested only in laboratory settings and little is known about

Siegel, Jeffrey

432

Flow Analysis on a Limited Volume Chilled Water System  

SciTech Connect

LANL Currently has a limited volume chilled water system for use in a glove box, but the system needs to be updated. Before we start building our new system, a flow analysis is needed to ensure that there are no high flow rates, extreme pressures, or any other hazards involved in the system. In this project the piping system is extremely important to us because it directly affects the overall design of the entire system. The primary components necessary for the chilled water piping system are shown in the design. They include the pipes themselves (perhaps of more than one diameter), the various fitting used to connect the individual pipes to form the desired system, the flow rate control devices (valves), and the pumps that add energy to the fluid. Even the most simple pipe systems are actually quite complex when they are viewed in terms of rigorous analytical considerations. I used an 'exact' analysis and dimensional analysis considerations combined with experimental results for this project. When 'real-world' effects are important (such as viscous effects in pipe flows), it is often difficult or impossible to use only theoretical methods to obtain the desired results. A judicious combination of experimental data with theoretical considerations and dimensional analysis are needed in order to reduce risks to an acceptable level.

Zheng, Lin [Los Alamos National Laboratory

2012-07-31T23:59:59.000Z

433

Self-Correcting HVAC Controls: Algorithms for Sensors and Dampers in Air-Handling Units  

SciTech Connect

This report documents the self-correction algorithms developed in the Self-Correcting Heating, Ventilating and Air-Conditioning (HVAC) Controls project funded jointly by the Bonneville Power Administration and the Building Technologies Program of the U.S. Department of Energy. The algorithms address faults for temperature sensors, humidity sensors, and dampers in air-handling units and correction of persistent manual overrides of automated control systems. All faults considered create energy waste when left uncorrected as is frequently the case in actual systems.

Fernandez, Nicholas; Brambley, Michael R.; Katipamula, Srinivas

2009-12-31T23:59:59.000Z

434

POEM: Power-efficient Occupancy-based Energy Management System  

E-Print Network (OSTI)

for optimally controlling HVAC systems in buildings based on actual occupancy levels. POEM is comprised for Heating Ventilation and Air-Conditioning (HVAC) systems. Current HVAC systems only condition based are then fused with an occupancy prediction model us- ing a particle filter in order to determine the most

Cerpa, Alberto E.

435

Application of Multizone HVAC Control Using Wireless Sensor Networks and Actuating Vent Registers  

E-Print Network (OSTI)

Most residential heating, ventilating, and air conditioning (HVAC) systems are designed to treat the home as a single zone. Single zone control consists of one thermostat, in a central area of the house that controls the HVAC operation. In a single zone system all of the vent registers are open, distributing air into all areas of the house at once. Single zone control leads to wasted energy for two reasons - all rooms being conditioned when they are not occupied, and conditioning occupied rooms, without maintaining them at the comfortable temperature for the occupants. Improved control of residential cooling and heating can be attained with a variable HVAC fan, duct, and vent system. Existing single zone systems are expensive to retrofit with the above mentioned features. Current techniques require replacing major components in the HVAC system which are both costly and time consuming, invading the user's home. An alternative to the extensive retrofit is detailed in this work. The experiments in this paper implement an automated vent louver system to solve two problems in heating homes: the problem of temperature stratification between floors and zonification between rooms, and the energy wasted to heat in unoccupied areas of the home. This paper considers the application of replacing the standard vents in each room with wireless controlled louvered vents. These vents allow for simpler, more cost effective retrofits which are also less invasive tithe end user's home. The experiments in this paper implement an automated vent louver system to reduce the energy wasted to heat unoccupied areas of the home. This test house in these experiments was a two story home. Wireless sensor-actuator networks were used to automate the test of closing off vent registers while maintaining the appropriate temperature set point in a control zone. A control zone consists of the house area where the vents are fully open. Controlling the vent registers allowed for reduced zonification between rooms on the same floor, and reduced stratification between the upstairs and downstairs. Energy savings were shown when vents were closed to heat the control zones containing the bedroom, of the office.

Watts, W.; Koplow, M.; Redfern, A.; Wright, P.

2007-01-01T23:59:59.000Z

436

Small power systems study. Volume. Study results. Technical summary report  

DOE Green Energy (OSTI)

The Division of Solar Technology of the Department of Energy is currently examining the market potential of a number of dispersed solar energy systems, including the small (less than or equal to 10 MW/sub e/) solar thermal power system. Small fossil-fueled generating units in the United States utility system, (i.e., investor-owned, municipal, and cooperatives) have a current capacity of approximately 8000 MW/sub e/ or about 1.5 percent of the total US electrical capacity, and provide a large potential market for small solar thermal power systems. The Small Power Systems Study has as its objective the determination of conditions under which small (less than or equal to 10 MW/sub e/) solar thermal power units can provide cost-effective electrical power to a variety of users. Potential users, in addition to the utility systems; include Department of Defense installations and applications, remote mining and/or lumbering operations, and other industrial power systems with and without cogeneration. The first year's results on the Small Power Systems Study are summarized. The data base used and the breakeven cost analysis are discussed. Information on both small (less than or equal to 10 MW/sub e/) generating units and the utility systems using them is presented as well as data on fossil fuel costs, solar plant costs, and solar insolation values. The results of a survey of Department of Defense (DOD) worldwide electrical generating capacity at its military bases and on a potential DOD application are presented. Information on a potential small solar power system experiment in the interior of Alaska is given, and a limited amount of information on a remote application which would provide power or a large open pit copper mine is presented. Volume II of this Technical Summary Report contains an inventory, by state, of the small (less than or equal to 10 MW/sub e/) generating units in the US utility system. (WHK)

Sitney, L.R.

1978-05-31T23:59:59.000Z

437

Small power systems study. Volume. Study results. Technical summary report  

SciTech Connect

The Division of Solar Technology of the Department of Energy is currently examining the market potential of a number of dispersed solar energy systems, including the small (less than or equal to 10 MW/sub e/) solar thermal power system. Small fossil-fueled generating units in the United States utility system, (i.e., investor-owned, municipal, and cooperatives) have a current capacity of approximately 8000 MW/sub e/ or about 1.5 percent of the total US electrical capacity, and provide a large potential market for small solar thermal power systems. The Small Power Systems Study has as its objective the determination of conditions under which small (less than or equal to 10 MW/sub e/) solar thermal power units can provide cost-effective electrical power to a variety of users. Potential users, in addition to the utility systems; include Department of Defense installations and applications, remote mining and/or lumbering operations, and other industrial power systems with and without cogeneration. The first year's results on the Small Power Systems Study are summarized. The data base used and the breakeven cost analysis are discussed. Information on both small (less than or equal to 10 MW/sub e/) generating units and the utility systems using them is presented as well as data on fossil fuel costs, solar plant costs, and solar insolation values. The results of a survey of Department of Defense (DOD) worldwide electrical generating capacity at its military bases and on a potential DOD application are presented. Information on a potential small solar power system experiment in the interior of Alaska is given, and a limited amount of information on a remote application which would provide power or a large open pit copper mine is presented. Volume II of this Technical Summary Report contains an inventory, by state, of the small (less than or equal to 10 MW/sub e/) generating units in the US utility system. (WHK)

Sitney, L.R.

1978-05-31T23:59:59.000Z

438

Thermovote: participatory sensing for efficient building HVAC conditioning  

Science Conference Proceedings (OSTI)

Thermal comfort has traditionally been measured solely by temperature. While other methods such as Predicted Mean Vote (PMV) are available for measuring thermal comfort, the parameters required for an accurate value are overly complicated to obtain and ... Keywords: HVAC conditioning, PMV, phones, thermal comfort

Varick L. Erickson; Alberto E. Cerpa

2012-11-01T23:59:59.000Z

439

POEM: power-efficient occupancy-based energy management system  

Science Conference Proceedings (OSTI)

Buildings account for 40% of US primary energy consumption and 72% of electricity. Of this total, 50% of the energy consumed in buildings is used for Heating Ventilation and Air-Conditioning (HVAC) systems. Current HVAC systems only condition based on ... Keywords: HVAC, energy savings, occupancy, ventilation

Varick L. Erickson; Stefan Achleitner; Alberto E. Cerpa

2013-04-01T23:59:59.000Z

440

Guidelines for the verification and validation of expert system software and conventional software: Bibliography. Volume 8  

Science Conference Proceedings (OSTI)

This volume contains all of the technical references found in Volumes 1-7 concerning the development of guidelines for the verification and validation of expert systems, knowledge-based systems, other AI systems, object-oriented systems, and conventional systems.

Miller, L.A.; Hayes, J.E.; Mirsky, S.M. [Science Applications International Corp., McLean, VA (United States)

1995-03-01T23:59:59.000Z

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


441

Effective, low-cost HVAC controls upgrade in a small bank building  

Science Conference Proceedings (OSTI)

This report summarizes the measured results from a field study of the performance of a low-cost controls retrofit in a small bank building in Knoxville, TN. The retrofit consisted of a simple upgrade of heating and cooling system controls and new operating strategies. The project was undertaken to better understand how commercial energy use measurement studies should be performed and to demonstrate the effectiveness of a low-cost controls retrofit in a small commercial building. This report describes the details of the project, including building and building system characteristics, the HVAC control changes made, energy end use patterns, and the heating and cooling energy savings achieved. An improved control strategy involving thermostat setback/setup and on/off control was devised around a single replacement programmable thermostat. The strategy allowed thermostat setback/setup control of the primary HVAC system in the building and provided on/off (time-of-day) control for the two secondary systems. The energy efficiency improvements provided a 33% reduction in heating and a 21% reduction in cooling energy consumptions. Simple payback for the retrofit, including installation cost, was under 1 year. In addition to reducing the energy needs of the building, the replacement electronic thermostat provided improved interior comfort. 9 refs., 12 figs., 3 tabs.

Sharp, T.R.; MacDonald, J.M.

1990-01-01T23:59:59.000Z

442

Analysis of automated highway system risks and uncertainties. Volume 5  

SciTech Connect

This volume describes a risk analysis performed to help identify important Automated Highway System (AHS) deployment uncertainties and quantify their effect on costs and benefits for a range of AHS deployment scenarios. The analysis identified a suite of key factors affecting vehicle and roadway costs, capacities and market penetrations for alternative AHS deployment scenarios. A systematic protocol was utilized for obtaining expert judgments of key factor uncertainties in the form of subjective probability percentile assessments. Based on these assessments, probability distributions on vehicle and roadway costs, capacity and market penetration were developed for the different scenarios. The cost/benefit risk methodology and analysis provide insights by showing how uncertainties in key factors translate into uncertainties in summary cost/benefit indices.

Sicherman, A.

1994-10-01T23:59:59.000Z

443

System design and dynamic signature identification for intelligent energy management in residential buildings.  

E-Print Network (OSTI)

hvac (t) (1 for on Then the system identication process boils down to optimizationHVAC switch are briey explained. The rest of this chapter is fo- cused on optimization

Jang, Jaehwi

2008-01-01T23:59:59.000Z

444

Building Envelope and HVAC FOA Selection Projects  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

cold climate commercial heat pump system. The system will reduce annual electricity use for commercial building space heating in cold climates by at least 25 percent....

445

HVAC Radial Air Bearing Heat Exchangers Research Project | Department of  

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

Radial Air Bearing Heat Exchangers Radial Air Bearing Heat Exchangers Research Project HVAC Radial Air Bearing Heat Exchangers Research Project The U.S. Department of Energy is currently conducting research into heating, ventilation, and air conditioning (HVAC) radial air bearing heat exchangers. Rotary air bearing heat exchanger technology simultaneously solves four long standing problems of conventional "fan-plus-finned-heat-sink" heat exchangers. Project Description This project seeks to design, fabricate, and test successive generations of prototype radial air bearing heat exchanger devices based on lessons learned and further insights into device optimization, computational fluid dynamic studies for parametric optimization and determination of scaling laws, and laboratory measurement of flow field and heat transfer

446

Columbia River System Operation Review : Final Environmental Impact Statement, Appendix T (Second Continued Volume): Comments & Responses.  

DOE Green Energy (OSTI)

This is Appendix T (second continued volume) giving public comments and responses to the final environmental impact statement for the Columbia River System.

Columbia River System Operation Review (U.S.)

1995-11-01T23:59:59.000Z

447

System for the Analysis of Global Energy Markets (Sage)-Volume 2  

U.S. Energy Information Administration (EIA)

System for the Analysis of Global Energy Markets (SAGE) Volume 2 ... SAGE allows for time-stepped optimization and intra-period market adjustment algorithms.

448

A multiple camera system with real-time volume reconstruction for articulated skeleton pose tracking  

Science Conference Proceedings (OSTI)

We present a multi-camera system for recovering skeleton body pose, by performing real-time volume reconstruction and using a hierarchical stochastic pose search algorithm. Different from many multicamera systems that require a few connected workstations, ... Keywords: multi-camera system, pose estimation, real-time volume reconstruction

Zheng Zhang; Hock Soon Seah; Chee Kwang Quah; Alex Ong; Khalid Jabbar

2011-01-01T23:59:59.000Z

449

Two Alabama Elementary Schools Get Cool with New HVAC Units | Department of  

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

Alabama Elementary Schools Get Cool with New HVAC Units Alabama Elementary Schools Get Cool with New HVAC Units Two Alabama Elementary Schools Get Cool with New HVAC Units October 1, 2010 - 2:05pm Addthis Winston County School District will receive 14 new HVAC units with State Energy Program funding. | File photo Winston County School District will receive 14 new HVAC units with State Energy Program funding. | File photo Lindsay Gsell What are the key facts? Two public elementary schools receive 14 new HVAC units for classrooms. School district estimates nearly 10 percent in electrical savings with new units. Nineteen Alabama public school districts using Recovery Act grants to save energy and money. Addison Elementary School and Double Springs Elementary School in northwestern Alabama were warm. Some classrooms just didn't cool fast enough. The buildings, which were

450

Building Energy Software Tools Directory: HVAC Solution  

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

Codes & Standards Materials, Components, Equipment, & Systems Other Applications Atmospheric Pollution Energy Economics Indoor Air Quality Multibuilding Facilities SolarClimate...

451

State energy price system. Volume I: overview and technical documentation  

SciTech Connect

This study utilizes existing data sources and previous analyses of state-level energy prices to develop consistent state-level energy prices series by fuel type and by end-use sector. The fuels are electricity, natural gas, coal, distillate fuel oil, motor gasoline, diesel, kerosene, jet fuel, residual fuel, and liquefied petroleum gas. The end-use sectors are residential, commercial, industrial, transportation, and electric utility. Based upon an evaluation of existing data sources, recommendations were formulated on the feasible approaches for developing a consistent state energy price series. The data series were compiled based upon the approaches approved after a formal EIA review. Detailed documentation was provided, including annual updating procedures. Recommendations were formulated for future improvements in the collection of data or in data processing. Generally, the geographical coverage includes the 50 states and the District of Columbia. Information on state-level energy use was generally taken from the State Energy Data System (SEDS). Corresponding average US prices are also developed using volumes reported in SEDS. To the extent possible, the prices developed are quantity weighted average retail prices. Both a Btu price series and a physical unit price series are developed for each fuel. The period covered by the data series is 1970 through 1980 for most fuels, though prices for electricity and natural gas extend back to 1960. (PSB)

Fang, J.M.; Nieves, L.A.; Sherman, K.L.; Hood, L.J.

1982-06-01T23:59:59.000Z

452

LBNL-5940E Monitoring-based HVAC  

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

estimate, and then was further calibrated based on monitored data from the EMCS and EIS (Energy Information Systems). Design flow rates, fan pressure rise and speed of supply...

453

A systems approach to retrofitting residential HVAC systems  

E-Print Network (OSTI)

The sealing included: air-sealing the attic floor plane (2was 9% of air handler flow. The sealing of the envelope wasaerosol sealing. The supply ducts were sealed to 4% of air

McWilliams, J.A.; Walker, I.S.

2004-01-01T23:59:59.000Z

454

A systems approach to retrofitting residential HVAC systems  

E-Print Network (OSTI)

Department of Energy, Washington, DC. Home Energy Magazine.Department of Energy, Washington, DC. DOE. Energy Star Home

McWilliams, J.A.; Walker, I.S.

2004-01-01T23:59:59.000Z

455

A systems approach to retrofitting residential HVAC systems  

E-Print Network (OSTI)

Retrofit Guide for Military Family Housing: Energy-EfficientPractices Guide includes references to DOE’s Home Energyguide the user to specific retrofit packages that maximize retrofit energy

McWilliams, J.A.; Walker, I.S.

2004-01-01T23:59:59.000Z

456

A systems approach to retrofitting residential HVAC systems  

E-Print Network (OSTI)

facing windows Radiant barrier in attic, low absorbtivityto reduce solar loads Add radiant barrier in attic, or low

McWilliams, J.A.; Walker, I.S.

2004-01-01T23:59:59.000Z

457

Hydro Life Extension Modernization Guides: Volumes 4 and 5: Auxiliary Mechanical and Electrical Systems  

Science Conference Proceedings (OSTI)

These guidelines are the fourth and fifth volumes in a series for assessing the needs and benefits and evaluating the cost and economic justification of life extension and modernization alternatives at hydroelectric plants and for implementing the selected plan. They specifically address the plant auxiliary mechanical systems (Volume 4) and auxiliary electrical systems (Volume 5). They also provide a screening procedure and criteria to enable utility personnel to identify where there are opportunities fo...

2001-12-17T23:59:59.000Z

458

HVAC Right-Sizing Part 1-Calculating Loads | Department of Energy  

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

-Calculating Loads HVAC Right-Sizing Part 1-Calculating Loads During this webinar, Building America Research Team IBACOS highlighted the key criteria required to create accurate...

459

Energy and Cost Implications of the Florida Energy Star Residential HVAC Rebate Program.  

E-Print Network (OSTI)

??In July 2010, the Florida’s Governors Energy Office released the Florida ENERGY STAR Residential HVAC Rebate Program. The program was funded by a grant from… (more)

Strauss, Kurt

2012-01-01T23:59:59.000Z

460

Quiet unlined HVAC ductwork: Using active silencing to obtain NC?35 in buildings without fibrous materials  

Science Conference Proceedings (OSTI)

Fan noise in HVAC ducts has traditionally been attenuated with fibrous internal duct liner or with passive silencers constructed with porous fill material. Now

Steve Wise; Lawrence J. Gelin; Kirk G. Burlage; Susan H. Dineen

1995-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac systems volume" 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.


461

HVAC Right-Sizing Part 1: Calculating Loads | Department of Energy  

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

: Calculating Loads HVAC Right-Sizing Part 1: Calculating Loads This webinar, presented by IBACOS (a Building America Research Team) will highlight the key criteria required to...

462

Numerical Investigation of Flow Induced Noise in a Simplified HVAC Duct with OpenFOAM.  

E-Print Network (OSTI)

?? Due to the growing demand for comfort, the noise generated by HVAC components should be considered by the designers. Flow induced noise is one… (more)

Wang, Cong

2013-01-01T23:59:59.000Z

463

Tecniche di machine learning per la ricerca guasti in impianti HVAC.  

E-Print Network (OSTI)

??Il corretto funzionamento degli impianti di tipo HVAC (Heating Ventilating and Air Conditioning) di taglia medio/grande, risulta cruciale al fine di garantire un adeguato livello… (more)

Corso, Lorenzo

2012-01-01T23:59:59.000Z

464

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

465

System 80+{trademark} Standard Design: CESSAR design certification. Volume 9: Amendment I  

Science Conference Proceedings (OSTI)

This report, entitled Combustion Engineering Standard Safety Analysis Report -- Design Certification (CESSAR-DC), has been prepared in support of the industry effort to standardize nuclear plant designs. These volumes describe the Combustion Engineering, Inc. System 80{sup +}{trademark} Standard Design. This volume 9 discusses Electric Power and Auxiliary Systems.

Not Available

1990-12-21T23:59:59.000Z

466

System 80+{trademark} Standard Design: CESSAR design certification. Volume 3: Amendment I  

SciTech Connect

This report, entitled Combustion Engineering Standard Safety Analysis Report - Design Certification (CESSAR-DC), has been prepared in support of the industry effort to standardize nuclear plant designs. These documents describe the Combustion Engineering, Inc. System 80+{sup TM} Standard Design. This report, Volume 3, in conjunction with Volume 2, provides the design of structures, components, equipment and systems.

Not Available

1990-12-21T23:59:59.000Z

467

System 80+{trademark} Standard Design: CESSAR design certification. Volume 2: Amendment I  

SciTech Connect

This report, entitled Combustion Engineering Standard Safety Analysis Report - Design Certification (CESSAR-DC), has been prepared in support of the industry effort to standardize nuclear plant designs. These documents describe the Combustion Engineering, Inc. System 80+{sup TM} Standard Design. This report, Volume 2, in conjunction with Volume 3, provides the design of structures, components, equipment and systems.

Not Available

1990-12-21T23:59:59.000Z

468

System 80+{trademark} Standard Design: CESSAR design certification. Volume 10: Amendment I  

Science Conference Proceedings (OSTI)

This report, entitled Combustion Engineering Standard Safety Analysis Report -- Design Certification (CESSAR-DC), has been prepared in support of the industry effort to standardize nuclear plant designs. These volumes describe the Combustion Engineering, Inc. System 80{sup +}{trademark} Standard Design. This volume 10 discusses the Steam and Power Conversion System and Radioactive Waste Management.

Not Available

1990-12-21T23:59:59.000Z

469

Pitfalls in Building and HVAC Audits  

E-Print Network (OSTI)

The purpose of an energy audit is to identify and analyze areas of energy consumption and to propose methods of conservation. In the process of completing an audit the following areas of consumption should be considered: 0 Building Envelope 0 Air-Handling Systems 0 Chilled Water Systems 0 Boiler Systems 0 Lighting/Electrical Systems Within these areas many potential conservation opportunities can be developed. Quite often opportunities are proposed without thorough analysis and as a result, they do not produce the desired results. When this happens, it is generally due to "pitfalls" or idiosyncrasies of the opportunity that were not considered in proposing the project. The purpose of this paper is to point out some common pitfalls in each of the above areas and to propose some possible alternatives.

Gidwani, B. N.

1985-01-01T23:59:59.000Z

470

Kentucky Power- Residential Efficient HVAC Rebate Program  

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

Kentucky Power's High Efficiency Heat Pump Program offers a $400 rebate to residential customers living in existing (site-built) homes who upgrade electric resistance heating systems with a new,...

471

HVAC Chiller Plant Screening Case Studies  

Science Conference Proceedings (OSTI)

EPRI's ChillerCalc software program is a useful tool for analyzing first-order comparative studies of chiller plant energy use, environmental performance, and economics. Hybrid cooling systems, which combine gas-fired and electric-driven chilling equipment, are emerging as a strategy to reduce central plant-related energy and demand costs. Although originally designed to analyze one-fuel type chillers at a time, ChillerCalc's capabilities were stretched to analyze hybrid systems. This report details the ...

2000-12-14T23:59:59.000Z

472

Proceedings of the 9th International Conference on Autonomous Agents and Multiagent Systems: volume 1 - Volume 1: volume 1  

Science Conference Proceedings (OSTI)

The Autonomous Agents and Multi-agent Systems (AAMAS) conference series brings together researchers from around the world to share the latest advances in the field. It was initiated in 2002 as a merger of three highly successful related events: the International ...

Michael Luck; Sandip Sen

2010-05-01T23:59:59.000Z

473

Proceedings of the 9th International Conference on Autonomous Agents and Multiagent Systems: volume 3 - Volume 3: volume 3  

Science Conference Proceedings (OSTI)

The Autonomous Agents and Multi-agent Systems (AAMAS) conference series brings together researchers from around the world to share the latest advances in the field. It was initiated in 2002 as a merger of three highly successful related events: the International ...

Michael Luck; Sandip Sen

2010-05-01T23:59:59.000Z

474

Proceedings of the 9th International Conference on Autonomous Agents and Multiagent Systems: volume 2 - Volume 2: volume 2  

Science Conference Proceedings (OSTI)

The Autonomous Agents and Multi-agent Systems (AAMAS) conference series brings together researchers from around the world to share the latest advances in the field. It was initiated in 2002 as a merger of three highly successful related events: the International ...

Michael Luck; Sandip Sen

2010-05-01T23:59:59.000Z

475

Systems Studies Department FY 78 activity report. Volume 2. Systems analysis. [Sandia Laboratories, Livermore  

DOE Green Energy (OSTI)

The Systems Studies Department at Sandia Laboratories Livermore (SLL) has two primary responsibilities: to provide computational and mathematical services and to perform systems analysis studies. This document (Volume 2) describes the FY Systems Analysis highlights. The description is an unclassified overview of activities and is not complete or exhaustive. The objective of the systems analysis activities is to evaluate the relative value of alternative concepts and systems. SLL systems analysis activities reflect Sandia Laboratory programs and in 1978 consisted of study efforts in three areas: national security: evaluations of strategic, theater, and navy nuclear weapons issues; energy technology: particularly in support of Sandia's solar thermal programs; and nuclear fuel cycle physical security: a special project conducted for the Nuclear Regulatory Commission. Highlights of these activities are described in the following sections. 7 figures. (RWR)

Gold, T.S.

1979-02-01T23:59:59.000Z

476

Source attenuating HVAC equipment—Just the facts  

Science Conference Proceedings (OSTI)

Current classroom designs range from NC 63 to NC 25. The ASA/ANSI 12.60 Classroom Standard sets a relatively low background sound requirement for classrooms. Achieving 12.60 levels economically requires the maximum in source sound attenuation. This paper will provide a manufacturer’s perspective on current and low noiseHVAC products and the resulting classroomsound levels. Predictive acoustics software will be used to predict the space sound power level and some indication of equipment cost will be provided in order to assist designers in what is the best approach to low noiseclassroom design.

2004-01-01T23:59:59.000Z

477

Heat Pump Thermal Distribution Systems, Volumes 1 and 2: Volumes 1 and 2  

Science Conference Proceedings (OSTI)

The thermal distribution system significantly affects the first cost and the operating cost of heat pumps. A detailed study has identified central and zoned systems that promise performance and cost benefits. This report discusses the thermal distribution system's applicability to air-source, ground-coupled, nonazeotropic refrigerant mixture and dual-fuel heat pumps.

1990-06-28T23:59:59.000Z

478

Environmental control principles - A textbook supplement to the ASHRAE handbook 1985 fundamentals volume and the companion solutions manual to environmental control principles  

Science Conference Proceedings (OSTI)

This book reviews HVAC General Concepts, Systems Equipment and challenges the reader to provide solutions for the Problems and Examples section.

Not Available

1985-01-01T23:59:59.000Z

479

Joint HVAC transmission EMF environmental study  

SciTech Connect

This document describes the rationale, procedures, and results of a carefully controlled study conducted to establish whether chronic exposure of female (ewe) Suffolk lambs to the environment of a 500-kV 60-Hz transmission line would affect various characteristics of growth, endocrine function, and reproductive development. This experiment used identical housing and management schemes for control and line-exposed ewes, thus minimizing these factors as contributors to between-group experimental error. Further, throughout the 10-month duration of this study, changes in electric and magnetic fields, audible noise, and weather conditions were monitored continuously by a computerized system. Such measurements provided the opportunity to identify any relationship between environmental factors and biological responses. Because of reports in the literature that electric and magnetic fields alter concentrations of melatonin in laboratory animals, the primary objective of this study was to ascertain whether a similar effect occurs in lambs exposed to a 500-kV a-c line in a natural setting. In addition, onset of puberty, changes in body weight, wool growth, and behavior were monitored. To determine whether the environment of a 500-kV line caused stress in the study animals, serum levels of cortisol were measured. The study was conducted at Bonneville Power Administration's Ostrander Substation near Estacada, Oregon.

Stormshak, F.; Thompson, J. (Oregon State Univ., Corvallis, OR (United States))

1992-05-01T23:59:59.000Z

480

Joint HVAC transmission EMF environmental study  

SciTech Connect

This document describes the rationale, procedures, and results of a carefully controlled study conducted to establish whether chronic exposure of female (ewe) Suffolk lambs to the environment of a 500-kV 60-Hz transmission line would affect various characteristics of growth, endocrine function, and reproductive development. This experiment used identical housing and management schemes for control and line-exposed ewes, thus minimizing these factors as contributors to between-group experimental error. Further, throughout the 10-month duration of this study, changes in electric and magnetic fields, audible noise, and weather conditions were monitored continuously by a computerized system. Such measurements provided the opportunity to identify any relationship between environmental factors and biological responses. Because of reports in the literature that electric and magnetic fields alter concentrations of melatonin in laboratory animals, the primary objective of this study was to ascertain whether a similar effect occurs in lambs exposed to a 500-kV a-c line in a natural setting. In addition, onset of puberty, changes in body weight, wool growth, and behavior were monitored. To determine whether the environment of a 500-kV line caused stress in the study animals, serum levels of cortisol were measured. The study was conducted at Bonneville Power Administration's Ostrander Substation near Estacada, Oregon.

Stormshak, F.; Thompson, J. (Oregon State Univ., Corvallis, OR (United States))

1992-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac systems volume" 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.


481

Proceedings of Healthy Buildings 2009 Paper 535 HVAC filters as "passive" samplers: fate analysis of indoor particles  

E-Print Network (OSTI)

Proceedings of Healthy Buildings 2009 Paper 535 HVAC filters as "passive" samplers: fate analysis: fedenoris@mail.utexas.edu SUMMARY To assess the potential use of HVAC filters as passive indoor samplers, exfiltration, and capture in the HVAC filter. The results suggest that large particles are likely to deposit

Siegel, Jeffrey

482

Simulation of Control Options for HVAC Management of a Typical Office Julien CAILLET julien.caillet@mines-paristech.fr  

E-Print Network (OSTI)

Simulation of Control Options for HVAC Management of a Typical Office Building. Julien CAILLET thermal comfort and to reduce energy consumption of buildings. Among defect correction, HVAC control appears as a way of significant improvement. HVAC control is examined by using a dynamic simulation

Paris-Sud XI, Université de

483

IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 53, NO. 2, FEBRUARY 2005 335 On the Capacity Limits of HVAC Duct Channel for  

E-Print Network (OSTI)

of HVAC Duct Channel for High-Speed Internet Access Ariton E. Xhafa, Member, IEEE, Ozan K. Tonguz, Member and experimental channel-capacity estimates of heating, ventilation, and air condi- tioning (HVAC) ducts based suppressed. Our experimental results also show that even in the case of more complex HVAC duct networks (i

Stancil, Daniel D.

484

1736 IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 51, NO. 10, OCTOBER 2003 Impulse Response of the HVAC Duct as a  

E-Print Network (OSTI)

of the HVAC Duct as a Communication Channel Pavel V. Nikitin, Member, IEEE, Daniel D. Stancil, Senior Member (HVAC) ducts in buildings behave as multimode waveguides when excited at radio frequencies and thus, can of a usual indoor propagation channel. In this paper, we describe physical mechanisms which affect the HVAC

Hochberg, Michael

485

System 80+{trademark} Standard Design: CESSAR design certification. Volume 18: Amendment I  

SciTech Connect

This report, entitled Combustion Engineering Standard Safety Analysis Report -- Design Certification (CESSAR-DC), has been prepared in support of the industry effort to standardize nuclear plant designs. These volumes describe the Combustion Engineering, Inc. System 80+{trademark} Standard Design. This Volume 18 provides Appendix B, Probabilistic Risk Assessment.

Not Available

1990-12-21T23:59:59.000Z

486

System 80+{trademark} Standard Design: CESSAR design certification. Volume 8: Amendment I  

SciTech Connect

This report, entitled Combustion Engineering Standard Safety Analysis Report -- Design Certification (CESSAR-DC), has been prepared in support of the industry effort to standardize nuclear plant designs. These volumes describe the Combustion Engineering, Inc. System 80{sup +}{trademark} Standard Design. This volume 8 provides a description of instrumentation and controls.

Not Available

1990-12-21T23:59:59.000Z

487

System 80+{trademark} Standard Design: CESSAR design certification. Volume 11: Amendment I  

Science Conference Proceedings (OSTI)

This report, entitled Combustion Engineering Standard Safety Analysis Report -- Design Certification (CESSAR-DC), has been prepared in support of the industry effort to standardize nuclear plant designs. These volumes describe the Combustion Engineering, Inc. System 80{sup +}{trademark} Standard Design. This volume 11 discusses Radiation Protection, Conduct of Operations, and the Initial Test Program.

Not Available

1990-12-21T23:59:59.000Z

488

Fourth international symposium on automotive propulsion systems. Volume I. [Eighteen papers  

DOE Green Energy (OSTI)

A pre-conference draft is given (in five volumes) of the proceedings of the 4th International Symposium on Automotive Propulsion Systems, held April 18-22, 1977, in Washington, D.C. Volume I contains eighteen papers; a separate abstract was prepared for each for ERDA Energy Research Abstracts (ERA).

Not Available

1977-01-01T23:59:59.000Z

489

Renewable Electricity Futures Study. Volume 4: Bulk Electric Power Systems: Operations and Transmission Planning  

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

Bulk Electric Power Systems: Bulk Electric Power Systems: Operations and Transmission Planning Volume 4 of 4 Volume 2 PDF Volume 3 PDF Volume 1 PDF Volume 4 PDF NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Renewable Electricity Futures Study Edited By Hand, M.M. National Renewable Energy Laboratory Baldwin, S. U.S. Department of Energy DeMeo, E. Renewable Energy Consulting Services, Inc. Reilly, J.M. Massachusetts Institute of Technology Mai, T. National Renewable Energy Laboratory Arent, D. Joint Institute for Strategic Energy Analysis Porro, G. National Renewable Energy Laboratory Meshek, M. National Renewable Energy Laboratory Sandor, D. National Renewable

490

Photovoltaic systems concept study. Final report. Volume I  

DOE Green Energy (OSTI)

Conceptual system designs were developed for three sizes of photovoltaic solar electric power systems: a single family residence, a central station power plant, and two on-site intermediate systems (shopping center and commercial retrofit). A brief system description and a summary of primary performance and economic characteristics are included for each of the three system designs. Principal conclusions for each are highlighted and overall system comparisons and recommendations are set forth. (MHR)

Not Available

1977-04-01T23:59:59.000Z

491

Water-Loop Heat Pump Systems: Volumes 1 and 2  

Science Conference Proceedings (OSTI)

Water-loop heat pump (WLHP) systems are reliable, versatile, energy-efficient alternatives to conventional systems such as packaged rooftop or central chiller systems. These systems offer low installed costs, unparalleled design flexibility, and an inherent ability to recover heat in a variety of commercial and multifamily residential buildings for both new construction and retrofit markets.

1993-04-01T23:59:59.000Z

492

Energy Saving in Office Building by Floor Integration System...  

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

Energy Saving in Office Building by Floor Integration System: Reducing Total Energy of HVAC and Lighting system using daylight Speaker(s): Yoshifumi Murakami Date: May 20, 2004 -...

493

Window signalling systems: control strategies and occupant behaviour  

E-Print Network (OSTI)

Occupant response to window control signaling systems (CBEDaly, A. (2002). Operable windows and HVAC systems. HPACK. (2008). The use of windows as controls for indoor

Ackerly, Katie; Brager, Gail

2013-01-01T23:59:59.000Z

494

State energy price system. Volume II: data base development  

SciTech Connect

This volume documents the entire data development process in sufficient detail to permit critical assessment of the data base. However, since a methodological discussion is included in Chapter 3 of Volume I, it is not repeated here. The data base development process was conducted in a fuel-by-fuel fashion, following the general sequence of electricity, natural gas, coal, distillate fuel, motor gasoline, diesel, kerosene, jet fuel, residual fuel, and liquefied petroleum gas. For each of the fuels, a detailed data source review was conducted, which included a preliminary screening against criteria set up for this purpose. After this first screening, the data sources that met most of the review criteria were evaluated in more detail. If one data source met all the criteria, that data source was recommended for use, with minimal change or imputation. If there were substantial gaps in the available data series, then alternative imputation procedures were developed and compared, and recommendations were formulated. This entire procedure was then documented in a draft working paper for review and discussion. To the extent reasonable and practical, comments from the formal EIA reviews were then incorporated into the final recommendations and the data base was developed.

Fang, J.M.; Nieves, L.A.; Sherman, K.L.; Hood, L.J.

1982-06-01T23:59:59.000Z

495

System and method for radiation dose calculation within sub-volumes of a monte carlo based particle transport grid  

DOE Patents (OSTI)

A system and method is disclosed for radiation dose calculation within sub-volumes of a particle transport grid. In a first step of the method voxel volumes enclosing a first portion of the target mass are received. A second step in the method defines dosel volumes which enclose a second portion of the target mass and overlap the first portion. A third step in the method calculates common volumes between the dosel volumes and the voxel volumes. A fourth step in the method identifies locations in the target mass of energy deposits. And, a fifth step in the method calculates radiation doses received by the target mass within the dosel volumes. A common volume calculation module inputs voxel volumes enclosing a first portion of the target mass, inputs voxel mass densities corresponding to a density of the target mass within each of the voxel volumes, defines dosel volumes which enclose a second portion of the target mass and overlap the first portion, and calculates common volumes between the dosel volumes and the voxel volumes. A dosel mass module, multiplies the common volumes by corresponding voxel mass densities to obtain incremental dosel masses, and adds the incremental dosel masses corresponding to the dosel volumes to obtain dosel masses. A radiation transport module identifies locations in the target mass of energy deposits. And, a dose calculation module, coupled to the common volume calculation module and the radiation transport module, for calculating radiation doses received by the target mass within the dosel volumes.

Bergstrom, Paul M. (Livermore, CA); Daly, Thomas P. (Livermore, CA); Moses, Edward I. (Livermore, CA); Patterson, Jr., Ralph W. (Livermore, CA); Schach von Wittenau, Alexis E. (Livermore, CA); Garrett, Dewey N. (Livermore, CA); House, Ronald K. (Tracy, CA); Hartmann-Siantar, Christine L. (Livermore, CA); Cox, Lawrence J. (Los Alamos, NM); Fujino, Donald H. (San Leandro, CA)

2000-01-01T23:59:59.000Z

496

TPX: Contractor preliminary design review. Volume 2, PF systems engineering  

SciTech Connect

This system development specification covers the Poloidal Field (PF) Magnet System, WBS 14 in the Princeton Plasma Physics Laboratory TPX Program to build a tokamak fusion reactor. This specification establishes the performance, design, development and test requirements of the PF Magnet System.

Calvin, H.A. [Lawrence Livermore National Lab., CA (United States)

1995-07-28T23:59:59.000Z

497

Recent Developments of the Modelica"Buildings" Library for Building Energy and Control Systems  

Science Conference Proceedings (OSTI)

At the Modelica 2009 conference, we introduced the Buildings library, a freely available Modelica library for building energy and control systems. This paper reports the updates of the library and presents example applications for a range of heating, ventilation and air conditioning (HVAC) systems. Over the past two years, the library has been further developed. The number of HVAC components models has been doubled and various components have been revised to increase numerical robustness.The paper starts with an overview of the library architecture and a description of the main packages. To demonstrate the features of the Buildings library, applications that include multizone airflow simulation as well as supervisory and local loop control of a variable air volume (VAV) system are briefly described. The paper closes with a discussion of the current development.

Wetter, Michael; Zuo, Wangda; Nouidui, Thierry Stephane

2011-04-01T23:59:59.000Z

498

A Management and Selection System for R&D Projects, Volume II - Project Management System and Project Data System  

DOE Green Energy (OSTI)

This report in three volumes describes an R&D project management and selection system developed for the Utilization Technology Branch of the Division of Geothermal Energy, Department of Energy. The proposed project management system (PMS) consists of a project data system (PDS) and a project selection procedure (PSP). The project data system consists of a series of project data forms and project status logs, and descriptions of information pathways. The PDS emphasizes timely monitoring of the technical and financial progress of projects, maintenance of the history of the project and rapid access to project information to facilitate responsive reporting to DGE and DOE upper management. The project selection procedure emphasizes an R&D product-oriented approach to benefit/cost analysis of individual projects. The report includes: (a) a description of the system, and recommendations for its implementation, (b) the PDS forms and an explanation of their use, (c) a glossary of terms for use on the forms, (d) a description of the benefit/cost approach, (e) a data base for estimating R&D benefits, and (f) examples of test applications of the system to nine current DGE projects. This volume discusses the proposed Project Data System in detail. It describes information needs and flow paths, and an information collection and storage system. Appendices contain the data forms for the system, and a glossary of terms and standard phrases for use on the forms.

Dhillon, Harpal S.; Entingh, Daniel J.

1978-05-01T23:59:59.000Z

499

Building America Expert Meeting Report: Transitioning Traditional HVAC Contractors to Whole House Performance Contractors  

DOE Green Energy (OSTI)

This report outlines findings resulting from a U.S. Department of Energy Building America expert meeting to determine how HVAC companies can transition from a traditional contractor status to a service provider for whole house energy upgrade contracting. IBACOS has embarked upon a research effort under the Building America Program to understand business impacts and change management strategies for HVAC companies. HVAC companies can implement these strategies in order to quickly transition from a 'traditional' heating and cooling contractor to a service provider for whole house energy upgrade contracting. Due to HVAC service contracts, which allow repeat interaction with homeowners, HVAC companies are ideally positioned in the marketplace to resolve homeowner comfort issues through whole house energy upgrades. There are essentially two primary ways to define the routes of transition for an HVAC contractor taking on whole house performance contracting: (1) Sub-contracting out the shell repair/upgrade work; and (2) Integrating the shell repair/upgrade work into their existing business. IBACOS held an Expert Meeting on the topic of Transitioning Traditional HVAC Contractors to Whole House Performance Contractors on March 29, 2011 in San Francisco, CA. The major objectives of the meeting were to: Review and validate the general business models for traditional HVAC companies and whole house energy upgrade companies Review preliminary findings on the differences between the structure of traditional HVAC Companies and whole house energy upgrade companies Seek industry input on how to structure information so it is relevant and useful for traditional HVAC contractors who are transitioning to becoming whole house energy upgrade contractors Seven industry experts identified by IBACOS participated in the session along with one representative from the National Renewable Energy Laboratory (NREL). The objective of the meeting was to validate the general operational profile of an integrated whole house performance contracting company and identify the most significant challenges facing a traditional HVAC contractor looking to transition to a whole house performance contractor. To facilitate the discussion, IBACOS divided the business operations profile of a typical integrated whole house performance contracting company (one that performs both HVAC and shell repair/upgrade work) into seven Operational Areas with more detailed Business Functions and Work Activities falling under each high-level Operational Area. The expert panel was asked to review the operational profile or 'map' of the Business Functions. The specific Work Activities within the Business Functions identified as potential transition barriers were rated by the group relative to the value in IBACOS creating guidance ensuring a successful transition and the relative difficulty in executing.

Burdick, A.

2011-10-01T23:59:59.000Z

500

Assessment of effectiveness of geologic isolation systems. CIRMIS data system. Volume 3. Generator routines  

SciTech Connect

The Assessment of Effectiveness of Geologic Isolation Systems (AEGIS) Program is developing and applying the methodology for assessing the far-field, long-term post-closure safety of deep geologic nuclear waste repositories. AEGIS is being performed by Pacific Northwest Laboratory (PNL) under contract with the Office of Nuclear Waste Isolation (ONWI) for the Department of Energy (DOE). One task within AEGIS is the development of methodology for analysis of the consequences (water pathway) from loss of repository containment as defined by various release scenarios. The various input parameters required in the analysis are compiled in data systems. The data are organized and prepared by various input subroutines for utilization by the hydraulic and transport codes. The hydrologic models simulate the groundwater flow systems and provide water flow directions, rates, and velocities as inputs to the transport models. Outputs from the transport models are basically graphs of radionuclide concentration in the groundwater plotted against time. After dilution in the receiving surface-water body (e.g., lake, river, bay), these data are the input source terms for the dose models, if dose assessments are required. The dose models calculate radiation dose to individuals and populations. CIRMIS (Comprehensive Information Retrieval and Model Input Sequence) Data System, a storage and retrieval system for model input and output data, including graphical interpretation and display is described. This is the third of four volumes of the description of the CIRMIS Data System.

Friedrichs, D.R.; Argo, R.S.

1980-01-01T23:59:59.000Z