Sample records for air conditioning accounts

  1. TTProblem A Air Conditioning Machinery

    E-Print Network [OSTI]

    California at Berkeley, University of

    TTProblem A Air Conditioning Machinery Input file: ducts.in You are a technician for the Air Conditioning Machinery company (ACM). Unfortunately, when you arrive at a customer site to install some air conditioning ducts, you discover that you are running low on supplies. You have only six duct segments

  2. Air conditioning system

    DOE Patents [OSTI]

    Lowenstein, Andrew; Miller, Jeffrey; Gruendeman, Peter; DaSilva, Michael

    2005-02-01T23:59:59.000Z

    An air conditioner comprises a plurality of plates arranged in a successively stacked configuration with portions thereof having a spaced apart arrangement, and defining between successive adjacent pairs of plates at the spaced apart portions a first and second series of discrete alternating passages wherein a first air stream is passed through the first series of passages and a second air stream is passed through the second series of passages; and said stacked configuration of plates forming integrally therewith a liquid delivery means for delivering from a source a sufficient quantity of a liquid to the inside surfaces of the first series of fluid passages in a manner which provides a continuous flow of the liquid from a first end to a second end of the plurality of plates while in contact with the first air stream.

  3. Lab Breakthrough: Desiccant Enhanced Evaporative Air Conditioning...

    Broader source: Energy.gov (indexed) [DOE]

    Desiccant Enhanced Evaporative Air Conditioning Lab Breakthrough: Desiccant Enhanced Evaporative Air Conditioning May 29, 2012 - 5:22pm Addthis This breakthrough combines desiccant...

  4. High Energy Efficiency Air Conditioning

    SciTech Connect (OSTI)

    Edward McCullough; Patrick Dhooge; Jonathan Nimitz

    2003-12-31T23:59:59.000Z

    This project determined the performance of a new high efficiency refrigerant, Ikon B, in a residential air conditioner designed to use R-22. The refrigerant R-22, used in residential and small commercial air conditioners, is being phased out of production in developed countries beginning this year because of concerns regarding its ozone depletion potential. Although a replacement refrigerant, R-410A, is available, it operates at much higher pressure than R-22 and requires new equipment. R-22 air conditioners will continue to be in use for many years to come. Air conditioning is a large part of expensive summer peak power use in many parts of the U.S. Previous testing and computer simulations of Ikon B indicated that it would have 20 - 25% higher coefficient of performance (COP, the amount of cooling obtained per energy used) than R-22 in an air-cooled air conditioner. In this project, a typical new R-22 residential air conditioner was obtained, installed in a large environmental chamber, instrumented, and run both with its original charge of R-22 and then with Ikon B. In the environmental chamber, controlled temperature and humidity could be maintained to obtain repeatable and comparable energy use results. Tests with Ikon B included runs with and without a power controller, and an extended run for several months with subsequent analyses to check compatibility of Ikon B with the air conditioner materials and lubricant. Baseline energy use of the air conditioner with its original R-22 charge was measured at 90 deg F and 100 deg F. After changeover to Ikon B and a larger expansion orifice, energy use was measured at 90 deg F and 100 deg F. Ikon B proved to have about 19% higher COP at 90 deg F and about 26% higher COP at 100 deg F versus R-22. Ikon B had about 20% lower cooling capacity at 90 deg F and about 17% lower cooling capacity at 100 deg F versus R-22 in this system. All results over multiple runs were within 1% relative standard deviation (RSD). All of these values agree well with previous results and computer simulations of Ikon B performance versus R-22. The lower cooling capacity of Ikon B is not a concern unless a particular air conditioner is near its maximum cooling capacity in application. Typically, oversized A/C systems are installed by contractors to cover contingencies. In the extended run with Ikon B, which lasted about 4.5 months at 100 deg F ambient temperature and 68% compressor on time, the air conditioner performed well with no significant loss of energy efficiency. Post-run analysis of the refrigerant, compressor lubricant oil, compressor, compressor outlet tubing, and the filter/dryer showed minor effects but nothing that was considered significant. The project was very successful. All objectives were achieved, and the performance of Ikon B indicates that it can easily be retrofitted into R-22 air conditioners to give 15 - 20% energy savings and a 1 - 3 year payback of retrofit costs depending on location and use. Ikon B has the potential to be a successful commercial product.

  5. A New Approach to Industrial Air Conditioning

    E-Print Network [OSTI]

    Gravenstreter, T.

    1982-01-01T23:59:59.000Z

    -dryer Systems Division, has marketed industrial drying machinery. These heat reactivated dryers can handle latent loads in industrial air conditioning systems. Through waste heat conservation, air conditioning costs can be reduced 25 to 50%, with applications...

  6. The investigation of exhaust powered, automotive air cycle air conditioning 

    E-Print Network [OSTI]

    Holley, James Andrew

    1978-01-01T23:59:59.000Z

    TEE INVESTIGATION OF EXHAUST POWERED, AUTOMOTIVE AIR CYCLE AIR CONDITIONING A Thesis James Andrew Holley Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE... August 1978 Major SubJect: Mechanical Engineering THE INVESTIGATION OF EXHAUST POWERED, AUTOMOTIVE AIR CYCLE AIR CONDITIONING A Thesis hy James Andrew Holley Approved as to style and content by: Chairman of Committee) (Head of Departm nt) Memb e...

  7. Optimization of Air Conditioning Cycling

    E-Print Network [OSTI]

    Seshadri, Swarooph

    2012-10-19T23:59:59.000Z

    on a 3-ton residential air conditioner are then presented to intuitively understand the effect of expansion valve and evaporator fan cycling in a real system. A real time optimization method is explored and the feasibility, recommendations for a...

  8. Air Conditioning | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube platform is alwaysISO 50001EnergyNewsletterAdvocateInnovations inEnergyAir

  9. The investigation of exhaust powered, automotive air cycle air conditioning

    E-Print Network [OSTI]

    Holley, James Andrew

    1978-01-01T23:59:59.000Z

    domestic automobiles and trucks because of its proven success. This system requires approximately 4 hp (2. 983 kW)[3] for operation snd employs a pressurized fluorinated hydrocarbon (R-12), hereafter fluorocarbon, as a refrigerant. Most of the research... extraction and avoid the use of a fluorocarbon refrigerant. The maJority of work involved with the new units has associated itself in the area of utilizing an absorption cycle or air cycle. The absorption air conditioning unit differs significantly from...

  10. air ingress conditions: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    air temperatures... conditions. The design of this study was based on the relation- ship of four parameters: air temperature, air velocity, radiant heat, and globe...

  11. air conditioning devices: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    air temperatures... conditions. The design of this study was based on the relation- ship of four parameters: air temperature, air velocity, radiant heat, and globe...

  12. air conditioning conference: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    air temperatures... conditions. The design of this study was based on the relation- ship of four parameters: air temperature, air velocity, radiant heat, and globe...

  13. air conditioning problemas: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    air temperatures... conditions. The design of this study was based on the relation- ship of four parameters: air temperature, air velocity, radiant heat, and globe...

  14. Air-Conditioning, Heating, and Refrigeration Institute (AHRI...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Air-Conditioning, Heating, and Refrigeration Institute (AHRI) Regulatory Burden RFI Air-Conditioning, Heating, and Refrigeration Institute (AHRI) Regulatory Burden RFI These...

  15. Alternative Refrigerants for Building Air Conditioning

    E-Print Network [OSTI]

    Bivens, D. B.

    1996-01-01T23:59:59.000Z

    The majority of building air conditioning has traditionally been achieved with vapor compression technology using CFC-I I or HCFC-22 as refrigerant fluids. CFC-11 is being successfully replaced by HCFC-123 (retrofit or new equipment) or by HFC- 134a...

  16. Seawater Air Conditioning for Downtown Engineering Project Manager

    E-Print Network [OSTI]

    Frandsen, Jannette B.

    Seawater Air Conditioning for Downtown Honolulu Scott Higa Engineering Project Manager Honolulu Seawater Air Conditioning, LLC Abstract As a tropical island state, Hawaii has a year-round demand for air conditioning. Conventional air conditioning systems are energy intensive and represent close to 50 percent

  17. Air-Conditioning Effect Estimation for Mid-Term Forecasts of Tunisian Electricity Consumption

    E-Print Network [OSTI]

    Boyer, Edmond

    Air-Conditioning Effect Estimation for Mid-Term Forecasts of Tunisian Electricity Consumption Tunisian electricity consumption (the residential sector represents 68% of this class of consumers). Nevertheless, with the Tunisian electricity consumption context, models elaborating which take account weather

  18. Seminar 14 - Desiccant Enhanced Air Conditioning: Desiccant Enhanced Evaporative Air Conditioning (Presentation)

    SciTech Connect (OSTI)

    Kozubal, E.

    2013-02-01T23:59:59.000Z

    This presentation explains how liquid desiccant based coupled with an indirect evaporative cooler can efficiently produce cool, dry air, and how a liquid desiccant membrane air conditioner can efficiently provide cooling and dehumidification without the carryover problems of previous generations of liquid desiccant systems. It provides an overview to a liquid desiccant DX air conditioner that can efficiently provide cooling and dehumidification to high latent loads without the need for reheat, explains how liquid desiccant cooling and dehumidification systems can outperform vapor compression based air conditioning systems in hot and humid climates, explains how liquid desiccant cooling and dehumidification systems work, and describes a refrigerant free liquid desiccant based cooling system.

  19. Alternatives to Electric Air Conditioning Systems

    E-Print Network [OSTI]

    Lindsay, B. B.; Koplow, M. D.

    1988-01-01T23:59:59.000Z

    of an engine-driven chiller is very fundamental. The electric motor: which drives the refrigerant compressor, is replaced with an engine. (Each prime mover has a shaft that rotates and transmits power.) Gas engine-driven chillers can capitalize... on the advances in compressor technology that have made electric air conditioning so attractive. The relative prices of natural gas and electricity will determine the best choice. An electric chiller may have a COP of 5.5. The gas engine chiller, because its...

  20. Central Air Conditioning | Department of Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWPSuccessAlamos Laboratory NastasiPASTCentral Air Conditioning

  1. Alternative non-CFC mobile air conditioning

    SciTech Connect (OSTI)

    Mei, V.C.; Chen, F.C.; Kyle, D.M.

    1992-09-01T23:59:59.000Z

    Concern about the destruction of the global environment by chlorofluorocarbon (CFC) fluids has become an impetus in the search for alternative, non-CFC refrigerants and cooling methods for mobile air conditioning (MAC). While some alternative refrigerants have been identified, they are not considered a lasting solution because of their high global warming potential, which could result in their eventual phaseout. In view of this dilemma, environmentally acceptable alternative cooling methods have become important. This report, therefore, is aimed mainly at the study of alternative automotive cooling methodologies, although it briefly discusses the current status of alternative refrigerants. The alternative MACs can be divided into work-actuated and heat-actuated systems. Work-actuated systems include conventional MAC, reversed Brayton air cycle, rotary vane compressor air cycle, Stirling cycle, thermoelectric (TE) cooling, etc. Heat-actuated MACs include metal hydride cooling, adsorption cooling, ejector cooling, absorption cycle, etc. While we are better experienced with some work-actuated cycle systems, heat-actuated cycle systems have a high potential for energy savings with possible waste heat applications. In this study, each altemative cooling method is discussed for its advantages and its limits.

  2. Material accountancy in an electrometallurgical Fuel Conditioning Facility

    SciTech Connect (OSTI)

    Vaden, D.; Benedict, R.W.; Goff, K.M.; Keyes, R.W.; Mariani, R.D. [Argonne National Lab.-West, Idaho Falls, ID (United States); Bucher, R.G.; Yacout, A.M. [Argonne National Lab., IL (United States)

    1996-05-01T23:59:59.000Z

    The Fuel Conditioning Facility (FCF) treats spent nuclear fuel using an electrometallurgical process that separates the uranium from the fission products, sodium thermal bond and cladding materials. Material accountancy is necessary at FCF for two reasons: first, it provides a mechanism for detecting a potential loss of nuclear material for safeguards and security; second, it provides a periodic check of inventories to ensure that processes and material are under control. By weighing material entering and leaving a process, and using sampling results to determine composition, an inventory difference (ID) results when the measured inventory is compared to the predicted inventory. The ID and its uncertainty, based on error propagation, determines the degree of assurance that an operation proceeded according to expectations. FCF uses the ID calculation in two ways: closeout, which is the ID and uncertainty for a particular operational step, and material accountancy, which determines an ID and its associated uncertainty for a material balance area through several operational steps. Material accountancy over the whole facility for a specified time period assists in detecting diversion of nuclear material. Data from depleted uranium operations are presented to illustrate the method used in FCF.

  3. Roswell International Air Center Airport (ROW) Pavement Condition and Analysis

    E-Print Network [OSTI]

    Cal, Mark P.

    Roswell International Air Center Airport (ROW) Pavement Condition and Analysis Submitted to: Jane M in December, 2009 18 .......................................4. Predicted Pavement Conditions Assuming No Maintenance 18 ...............Table 5. Predicted Pavement Conditions (PCI) Assuming no Maintenance After 2010

  4. air conditioning technology: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and Thermally Activated Technologies Improve Air Conditioning Researchers at the National Renewable Energy Laboratory (NREL) invented a breakthrough technology moisture from the...

  5. air conditioning technologies: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and Thermally Activated Technologies Improve Air Conditioning Researchers at the National Renewable Energy Laboratory (NREL) invented a breakthrough technology moisture from the...

  6. air conditioning equipments: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    introducing or upgrading... analyses using BEMS data, ?) additional actual measurement data analyses and ?) HVAC system simulations using LCEM tool. The detailed air-conditioned...

  7. air conditioning equipment: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    introducing or upgrading... analyses using BEMS data, ?) additional actual measurement data analyses and ?) HVAC system simulations using LCEM tool. The detailed air-conditioned...

  8. air conditioning load: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    J.; Deying, L. 2006-01-01 2 Aggregated Modeling and Control of Air Conditioning Loads for Demand Response Computer Technologies and Information Sciences Websites Summary: 1...

  9. air conditioning loads: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Websites Summary: 1 Aggregated Modeling and Control of Air Conditioning Loads for Demand Response Wei Zhang, Member, IEEE Abstract--Demand response is playing an...

  10. Identifying Efficiency Degrading Faults in Split Air Conditioning Systems

    E-Print Network [OSTI]

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

    2013-01-01T23:59:59.000Z

    Studies estimate that as much as 50% of packaged air conditioning systems operate in faulty conditions that degrade system efficiency. Common faults include: under- and over-charged systems (too much or too little refrigerant), faulty expansions...

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

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    The energy consumption of the constant air volume (CAV) system largely depends on the regulation strategies. Although some air conditioning systems are equipped with automatic regulation devices, others lack effective regulation strategies. To avoid...

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

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    The energy consumption of the constant air volume (CAV) system largely depends on the regulation strategies. Although some air conditioning systems are equipped with automatic regulation devices, others lack effective ...

  13. Heating, Ventilating, and Air-Conditioning: Recent Advances in Diagnostics and Controls to Improve Air-Handling System Performance

    E-Print Network [OSTI]

    Wray, Craig P.

    2008-01-01T23:59:59.000Z

    Heating, Ventilating, and Air-Conditioning: Recent Advancesthe energy efficiency of many heating, ventilating, and air-system, which delivers heating, cooling, and ventilation air

  14. STATE OF CALIFORNIA ICE STORAGE AIR CONDITIONING (ISAC) UNITS

    E-Print Network [OSTI]

    cooling with the compressor). Yes No #12;STATE OF CALIFORNIA ICE STORAGE AIR CONDITIONING (ISAC) UNITS CEC/09) CALIFORNIA ENERGY COMMISSION INSTALLATION CERTIFICATE CF-6R-MECH-08 Ice Storage Air Conditioning (ISAC) Units being full of ice. Verify that the system is operates properly in the Idle mode (i.e., the compressor

  15. Air conditioning system with supplemental ice storing and cooling capacity

    DOE Patents [OSTI]

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

    1998-01-01T23:59:59.000Z

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

  16. BEETIT: Building Cooling and Air Conditioning

    SciTech Connect (OSTI)

    None

    2010-09-01T23:59:59.000Z

    BEETIT Project: The 14 projects that comprise ARPA-E’s BEETIT Project, short for “Building Energy Efficiency Through Innovative Thermodevices,” are developing new approaches and technologies for building cooling equipment and air conditioners. These projects aim to drastically improve building energy efficiency and reduce greenhouse gas emissions such as carbon dioxide (CO2) at a cost comparable to current technologies.

  17. Accountant

    Broader source: Energy.gov [DOE]

    A successful candidate in this position will serve as an accountant responsible for independently planning and conducting a variety of general accounting activities. The candidate will analyze...

  18. Desiccant Enhanced Evaporative Air Conditioning: Parametric Analysis and Design; Preprint

    SciTech Connect (OSTI)

    Woods, J.; Kozubal, E.

    2012-10-01T23:59:59.000Z

    This paper presents a parametric analysis using a numerical model of a new concept in desiccant and evaporative air conditioning. The concept consists of two stages: a liquid desiccant dehumidifier and a dew-point evaporative cooler. Each stage consists of stacked air channel pairs separated by a plastic sheet. In the first stage, a liquid desiccant film removes moisture from the process (supply-side) air through a membrane. An evaporatively-cooled exhaust airstream on the other side of the plastic sheet cools the desiccant. The second-stage indirect evaporative cooler sensibly cools the dried process air. We analyze the tradeoff between device size and energy efficiency. This tradeoff depends strongly on process air channel thicknesses, the ratio of first-stage to second-stage area, and the second-stage exhaust air flow rate. A sensitivity analysis reiterates the importance of the process air boundary layers and suggests a need for increasing airside heat and mass transfer enhancements.

  19. Central Air Conditioning | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube platformBuilding RemovalCSS LetterStateDepartmentAnnounce Results ofCentral Air

  20. Importance of Design Conditions for Sizing Air-Conditioning Plant

    E-Print Network [OSTI]

    Shaban, N.; Maheshwari, G. P.; Suri, R. K.

    2000-01-01T23:59:59.000Z

    Design conditions based on the meteorological data collected at two weather stations located less than 10 km away from each other within Kuwait City are presented for dry-bulb temperature (DBT) and web-bulb temperature (WBT) prioritization...

  1. Innovative Systems for Solar Air Conditioning of Buildings

    E-Print Network [OSTI]

    Kessling, W.; Peltzer, M.

    2004-01-01T23:59:59.000Z

    for a high efficient utilization of solar thermal energy. To show the today's and near future potential innovative solar cooling and air conditioning systems are discussed which are well adapted to the utilization of solar energy. The system performance...

  2. Improving Glass Walls Thermal Resistance In Air-Conditioned Buildings 

    E-Print Network [OSTI]

    Galal, T.; Kulaib, A. M.; Alajmi, R.; Al-Ansary. A; Abuzaid, M.

    2010-01-01T23:59:59.000Z

    The solar radiation through an air conditioned building depends on what is called the building envelope. Building envelope consists of the surfaces that separate the inside from the building outdoors. Area, direction, and specifications of glass...

  3. Improving Glass Walls Thermal Resistance In Air-Conditioned Buildings

    E-Print Network [OSTI]

    Galal, T.; Kulaib, A. M.; Alajmi, R.; Al-Ansary. A; Abuzaid, M.

    2010-01-01T23:59:59.000Z

    The solar radiation through an air conditioned building depends on what is called the building envelope. Building envelope consists of the surfaces that separate the inside from the building outdoors. Area, direction, and specifications of glass...

  4. air conditioning energy: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    R. Parameshwaran; R. Karunakaran; S. Iniyan; A. Samuel 7 Discussion of Air-Conditioning Energy-Savings in Hot-Summer and Cold-Winter Regions Texas A&M University - TxSpace...

  5. air conditioning desarrollo: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Abdalla, K. N. 2010-01-01 36 Economic Analysis and Comparison of Waste Water Resource Heat Pump Heating and Air-Conditioning System Texas A&M University - TxSpace Summary: Based...

  6. air conditioning installations: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    K. 2010-01-01 98 Implementation of Smart Operation Strategies for Air-Conditioning and Lighting Systems for Ministries Complex in the State of Kuwait Texas A&M University -...

  7. Date | 1Refrigeration and Air Conditioning EMA Education and Training Date | 2Refrigeration and Air Conditioning EMA Education and Training

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    Automatic Controls Evaporator Load Superheat MSS Curve MSS curve depends on Load Evaporator Temperature Air, stable superheat over full capacity range ensures best COP under all conditions MSS Curve Superheat Curve

  8. air conditioning absorption: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    conditioning absorption First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Gas Powered Air Conditioning...

  9. Accounting

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2003-01-06T23:59:59.000Z

    To prescribe the requirements and responsibilities for the accounting and financial management of the Department of Energy (DOE). Cancels DOE O 534.1A.

  10. Accountant

    Broader source: Energy.gov [DOE]

    This position is located in the Office of the Deputy Administrator, Finance, Accounting & Reporting. Additional vacancies may be filled through this vacancy announcement or if they become...

  11. Problem Type Problem Type Description Air Conditioning Air conditioner not working, leaking, etc

    E-Print Network [OSTI]

    Tennessee, University of

    Problem Type Problem Type Description Air Conditioning Air conditioner not working, leaking, etc, Microfridges Doors and Hardware Door repair/replace Lock, latch or hinge repair, key stuck; Lost or stolen key, repair or replace Shades/Blinds Window treatment - repair or replace Washer/Dryer Washer/Dryer repair

  12. Off-peak air conditioning; A major energy saver

    SciTech Connect (OSTI)

    MacCracken, C.D.

    1991-12-01T23:59:59.000Z

    Today, the mission given to manufacturers is changing to include saving energy (kWh). Until now, saving energy was ignored because the utilities were happy to fill their night valley to reach a higher load factor. There also was a general feeling that making ice was much less efficient than standard air conditioning, and that anyone saying otherwise was a dreamer. This article discusses the energy savings based on the more prevalent ice storage technology, the similar suction temperatures of the various types of ice storage, and how storage is applied. Included are baseload power generation, partial storage with chiller priority, using air cooled condensers when making ice at night, colder duct air, heat recovery, central rooftop systems, smart controls, electric/gas combinations, supply side transmission and distribution losses, and cooling of air entering gas turbine generators during peak conditions.

  13. Table HC15.7 Air-Conditioning Usage Indicators by Four Most...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    or More Units... 5.4 0.7 Q 0.5 Q Central Air-Conditioning Usage Air-Conditioned Floorspace (Square Feet)...

  14. Accounting

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2001-07-05T23:59:59.000Z

    To prescribe the requirements and responsibilities for the accounting and financial management of the Department of Energy (DOE). Cancels DOE O 534.1. Canceled by DOE O 534.1B.

  15. Modeling and Control of Aggregated Air Conditioning Loads Under Realistic Conditions

    E-Print Network [OSTI]

    Zhang, Wei

    heaters are examples of TCLs. They use local hysteresis control to maintain either air or water units and water heaters is developed in [7] using detailed physical models. In all the aforementioned for a large fraction of electric demand. HVAC (Heating, Ventilation and air conditioning) systems and water

  16. Gas Powered Air Conditioning Absorption vs. Engine-Drive

    E-Print Network [OSTI]

    Phillips, J. N.

    1996-01-01T23:59:59.000Z

    It used to be that the only alternative to costly electric air conditioning was the double-effect gas-fired absorption chiller/heaters. Beginning in the 1980's, they were the "star" equipment promoted by gas companies throughout the nation. Although...

  17. Accounting

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWP TWP Related LinksATHENA Account Information Accounts and

  18. Study of long term options for electric vehicle air conditioning

    SciTech Connect (OSTI)

    Dieckmann, J.; Mallory, D. [Little (Arthur D.), Inc., Cambridge, MA (United States)

    1991-07-01T23:59:59.000Z

    There are strong incentives in terms of national energy and environmental policy to encourage the commercialization of electrically powered vehicles in the U.S. Among these incentives are reduced petroleum consumption, improved electric generation capacity utilization, reduced IC engine emissions, and, depending on the primary fuel used for electric power generation, reduced emissions of carbon dioxide. A basic requirement for successfully commercializing any motor vehicle in the US is provision of adequate passenger comfort heating and air conditioning (cooling). Although air conditioning is generally sold as optional equipment, in excess of 80% of the automobiles and small trucks sold in the US have air conditioning systems. In current, pre-commercial electric vehicles, comfort heating is provided by a liquid fuel fired heater that heats water which is circulated through the standard heater core in the conventional interior air handling unit. Air conditioning is provided by electric motor driven compressors, installed in a system having, perhaps, an {open_quotes}upsized{close_quotes} condenser and a standard evaporator (front and rear evaporators in some instances) installed in the conventional interior air handler. Although this approach is adequate in the near term for initial commercialization efforts, a number of shortcomings of this arrangement, as well as longer range concerns need to be addressed. In this project, the long term alternatives for cooling and heating electric vehicles effectively, efficiently (with minimum range penalties), and without adverse environmental impacts have been examined. Identification of options that can provide both heating and cooling is important, in view of the disadvantages of carrying separate heating and cooling systems in the vehicle.

  19. Study of long term options for electric vehicle air conditioning

    SciTech Connect (OSTI)

    Dieckmann, J.; Mallory, D. (Little (Arthur D.), Inc., Cambridge, MA (United States))

    1991-07-01T23:59:59.000Z

    There are strong incentives in terms of national energy and environmental policy to encourage the commercialization of electrically powered vehicles in the U.S. Among these incentives are reduced petroleum consumption, improved electric generation capacity utilization, reduced IC engine emissions, and, depending on the primary fuel used for electric power generation, reduced emissions of carbon dioxide. A basic requirement for successfully commercializing any motor vehicle in the US is provision of adequate passenger comfort heating and air conditioning (cooling). Although air conditioning is generally sold as optional equipment, in excess of 80% of the automobiles and small trucks sold in the US have air conditioning systems. In current, pre-commercial electric vehicles, comfort heating is provided by a liquid fuel fired heater that heats water which is circulated through the standard heater core in the conventional interior air handling unit. Air conditioning is provided by electric motor driven compressors, installed in a system having, perhaps, an [open quotes]upsized[close quotes] condenser and a standard evaporator (front and rear evaporators in some instances) installed in the conventional interior air handler. Although this approach is adequate in the near term for initial commercialization efforts, a number of shortcomings of this arrangement, as well as longer range concerns need to be addressed. In this project, the long term alternatives for cooling and heating electric vehicles effectively, efficiently (with minimum range penalties), and without adverse environmental impacts have been examined. Identification of options that can provide both heating and cooling is important, in view of the disadvantages of carrying separate heating and cooling systems in the vehicle.

  20. The Earth-Coupled or Geothermal Heat Pump Air Conditioning System 

    E-Print Network [OSTI]

    Wagers, H. L.; Wagers, M. C.

    1985-01-01T23:59:59.000Z

    pump and the desuperheater as the latest developments in energy efficient air conditioning and water heating....

  1. Innovative Systems for Solar Air Conditioning of Buildings 

    E-Print Network [OSTI]

    Kessling, W.; Peltzer, M.

    2004-01-01T23:59:59.000Z

    kessling@transsolar.com Dipl.-Ing. Matthias PELTZER Technical Director L-DCS Technology GmbH Muenchener Str. 101, 85737 Ismaning b. Munich matthias.peltzer@l-dcs.com ABSTRACT Solar air conditioning is an attractive technology to achieve comfortable room... states (4). The room return air (5) is used in a latent heat recovery (6) (psychometric process see Figure 4). To illuminate the excellent system performance a typical cooling load profile for a standard office build- ing in the hot and humid climate...

  2. Performance assessment on continuous air monitors under real operating conditions

    SciTech Connect (OSTI)

    Monsanglant-Louvet, C.; Liatimi, N.; Gensdarmes, F. [Inst. of Radioprotection and Nuclear Safety- IRSN, Saclay (France)

    2011-07-01T23:59:59.000Z

    In the nuclear industry, workers may be exposed to artificial radioactive aerosols. These aerosols are generally composed of particles with a diameter measuring between 0.1 {mu}m and 10 {mu}m. To protect workers in nuclear facilities, monitors that continuously measure radioactivity in the air are used. The main function of the monitor is to provide real-time measurement of activity concentration. Measurement of aerosol activity concentration can be affected by a number of factors specific to the aerosols and the instrument. The first part of the article will present the general operating principles of continuous air monitors (CAMs) and inherent measurement difficulties, as well as the main standard tests. The second section describes the experimental ICARE facility The ICARE facility generates standard artificial and natural radioactive aerosols for calibrating continuous air monitors under real operating conditions. (authors)

  3. Magnetic Refrigeration Technology for High Efficiency Air Conditioning

    SciTech Connect (OSTI)

    Boeder, A; Zimm, C

    2006-09-30T23:59:59.000Z

    Magnetic refrigeration was investigated as an efficient, environmentally friendly, flexible alternative to conventional residential vapor compression central air conditioning systems. Finite element analysis (FEA) models of advanced geometry active magnetic regenerator (AMR) beds were developed to minimize bed size and thus magnet mass by optimizing geometry for fluid flow and heat transfer and other losses. Conventional and magnetocaloric material (MCM) regenerator fabrication and assembly techniques were developed and advanced geometry passive regenerators were built and tested. A subscale engineering prototype (SEP) magnetic air conditioner was designed, constructed and tested. A model of the AMR cycle, combined with knowledge from passive regenerator experiments and FEA results, was used to design the regenerator beds. A 1.5 Tesla permanent magnet assembly was designed using FEA and the bed structure and plenum design was extensively optimized using FEA. The SEP is a flexible magnetic refrigeration platform, with individually instrumented beds and high flow rate and high frequency capability, although the current advanced regenerator geometry beds do not meet performance expectations, probably due to manufacturing and assembly tolerances. A model of the AMR cycle was used to optimize the design of a 3 ton capacity magnetic air conditioner, and the system design was iterated to minimize external parasitic losses such as heat exchanger pressure drop and fan power. The manufacturing cost for the entire air conditioning system was estimated, and while the estimated SEER efficiency is high, the magnetic air conditioning system is not cost competitive as currently configured. The 3 ton study results indicate that there are other applications where magnetic refrigeration is anticipated to have cost advantages over conventional systems, especially applications where magnetic refrigeration, through the use of its aqueous heat transfer fluid, could eliminate intermediate heat exchangers or oil distribution issues found in traditional vapor compression systems.

  4. E-Print Network 3.0 - air conditioning automatic Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    exhaust air... conditions. Because of these external demands, the American Society of Heating, Refrigerating and Air... monitors include a remote alarm signal andor automatic...

  5. In-Cab Air Quality of Trucks Air Conditioned and Kept in Electrified Truck Stop

    SciTech Connect (OSTI)

    Lee, Doh-Won [Texas Transportation Institute; Zietsman, Josias [Texas Transportation Institute; Farzaneh, Mohamadreza [Texas Transportation Institute; Li, Wen-Whai [University of Texas, El Paso; Olvera, Hector [University of Texas, El Paso; Storey, John Morse [ORNL; Kranendonk, Laura [ORNL

    2009-01-01T23:59:59.000Z

    At night, long-haul truck drivers rest inside the cabins of their vehicles. Therefore, the in-cab air quality while air conditioning (A/C) is being provided can be a great concern to the drivers health. The effect of using different A/C methods [truck's A/C, auxiliary power unit (APU), and truck stop electrification (TSE) unit] on in-cab air quality of a heavy-duty diesel vehicle was investigated at an electrified truck stop in the El Paso, Texas, area. The research team measured the in-cabin and the ambient air quality adjacent to the parked diesel truck as well as emissions from the truck and an APU while it was providing A/C. The measured results were compared and analyzed. On the basis of these results, it was concluded that the TSE unit provided better in-cab air quality while supplying A/C. Furthermore, the truck and APU exhaust emissions were measured, and fuel consumption of the truck (while idling) and the APU (during operation) were compared. The results led to the finding that emissions from the APU were less than those from the truck's engine idling, but the APU consumed more fuel than the engine while providing A/C under given conditions.

  6. Operation of Energy-Efficient Air-Conditioned Buildings: An Overview

    E-Print Network [OSTI]

    Khalil, E. E.

    2010-01-01T23:59:59.000Z

    To design an optimum HVAC airside system that provides comfort and air quality in the air-conditioned spaces with efficient energy consumption is a great challenge. This paper evaluates recent progresses of HVAC airside design for the air...

  7. A web based CBR system for heating ventilation and air conditioning systems sales support

    E-Print Network [OSTI]

    Watson, Ian

    A web based CBR system for heating ventilation and air conditioning systems sales support D describes the implementation of a case-based reasoning (CBR) system to support heating ventilation and air. Introduction Western Air is a distributor of heating ventilation and air conditioning (HVAC) systems

  8. Liquid over-feeding air conditioning system and method

    DOE Patents [OSTI]

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

    1993-01-01T23:59:59.000Z

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

  9. Liquid over-feeding air conditioning system and method

    DOE Patents [OSTI]

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

    1993-09-21T23:59:59.000Z

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

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

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    This paper analyzes the effects of different pressure difference control methods on hydraulic stability in a variable flow air conditioning system when it is applied to different air conditioning water systems. According to control method and water...

  11. Proposal for an Adsorption Solar-Driven Air-Conditioning Unit for Public Offices 

    E-Print Network [OSTI]

    Elsamni, O. A.; Sahmarani, K.J.; Obied, F. K.

    2010-01-01T23:59:59.000Z

    A simple prototype air conditioning unit driven entirely by solar energy is proposed aiming at replacing the conventional vapor compression air conditioning systems which are reasonable for the global warming. The proposed model is supposed...

  12. Proposal for an Adsorption Solar-Driven Air-Conditioning Unit for Public Offices

    E-Print Network [OSTI]

    Elsamni, O. A.; Sahmarani, K.J.; Obied, F. K.

    2010-01-01T23:59:59.000Z

    A simple prototype air conditioning unit driven entirely by solar energy is proposed aiming at replacing the conventional vapor compression air conditioning systems which are reasonable for the global warming. The proposed model is supposed...

  13. Numerical Analysis of Heat and Moisture Transfer in Underground Air-conditioning Systems

    E-Print Network [OSTI]

    Wang, Q.; Miao, X.; Cheng, B.; Fan, L.

    2006-01-01T23:59:59.000Z

    In view of the influence of humidity of room air on room heat load, indoor environment and building energy consumption in underground intermittent air-conditioning systems, numerical simulation was used to dynamically analyze the coupling condition...

  14. Control of Computer Room Air Conditioning using IT Equipment Sensors

    SciTech Connect (OSTI)

    Bell, Geoffrey C.; Storey, Bill; Patterson, Michael K.

    2009-09-30T23:59:59.000Z

    The goal of this demonstration was to show how sensors in IT equipment could be accessed and used to directly control computer room air conditioning. The data provided from the sensors is available on the IT network and the challenge for this project was to connect this information to the computer room air handler's control system. A control strategy was developed to enable separate control of the chilled water flow and the fans in the computer room air handlers. By using these existing sensors in the IT equipment, an additional control system is eliminated (or could be redundant) and optimal cooling can be provided saving significant energy. Using onboard server temperature sensors will yield significant energy reductions in data centers. Intel hosted the demonstration in its Santa Clara, CA data center. Intel collaborated with IBM, HP, Emerson, Wunderlich-Malec Engineers, FieldServer Technologies, and LBNL to install the necessary components and develop the new control scheme. LBNL also validated the results of the demonstration.

  15. Prediction of Air Conditioning Load Response for Providing Spinning Reserve - ORNL Report

    SciTech Connect (OSTI)

    Kueck, John D [ORNL; Kirby, Brendan J [ORNL; Ally, Moonis Raza [ORNL; Rice, C Keith [ORNL

    2009-02-01T23:59:59.000Z

    This report assesses the use of air conditioning load for providing spinning reserve and discusses the barriers and opportunities. Air conditioning load is well suited for this service because it often increases during heavy load periods and can be curtailed for short periods with little impact to the customer. The report also provides an appendix describing the ambient temperature effect on air conditioning load.

  16. Comparison of global warming impacts of automobile air-conditioning concepts

    SciTech Connect (OSTI)

    NONE

    1995-12-31T23:59:59.000Z

    The global warming impacts of conventional vapor compression automobile air conditioning using HFC-134a are compared with the potential impacts of four alternative concepts. Comparisons are made on the basis of total equivalent warming impact (TEWI) which accounts for the effects of refrigerant emissions, energy use to provide comfort cooling, and fuel consumed to transport the weight of the air conditioning system. Under the most favorable assumptions on efficiency and weight, transcritical compression using CO{sub 2} as the refrigerant and adsorption cooling with water and zeolite beds could reduce TEWI by up to 18%rlative to HFC-134a compression air conditioning. Other assumptions on weight and efficiency lead to significant increases in TEWI relative to HFC-134a, and it is impossible to determine which set of assumptios is valid from existing data, Neither Stirling cycle or thermoelectric cooling will reduce TEWI relative to EFC-134a. Brief comments are also made concerning technical barriers that must be overcome for succesful development of the new technologies.

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

    E-Print Network [OSTI]

    Guang, L.; Li, R.

    2006-01-01T23:59:59.000Z

    This paper presents the principles and the characteristics of a dedicated outdoor air system (DOAS) and low temperature supply air system. DOAS is offered based on the demands of indoor air quality and the low temperature supply air system...

  18. Use of chlorofluorocarbons in refrigeration, insulation and mobile air conditioning in the USA*

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    FILE COPY DO NOT REMOVE Use of chlorofluorocarbons in refrigeration, insulation and mobile air in refrigeration equipment and mobile air conditioners, or as the blowing agent in foam insulations. When again accounted for _ 40 %of the potential risk to the environment. Refrigeration, mobile air

  19. Investigation of residential central air conditioning load shapes in NEMS

    SciTech Connect (OSTI)

    Hamachi LaCommare, Kristina; Marnay, Chris; Gumerman, Etan; Chan, Peter; Rosenquist, Greg; Osborn, Julie

    2002-05-01T23:59:59.000Z

    This memo explains what Berkeley Lab has learned about how the residential central air-conditioning (CAC) end use is represented in the National Energy Modeling System (NEMS). NEMS is an energy model maintained by the Energy Information Administration (EIA) that is routinely used in analysis of energy efficiency standards for residential appliances. As part of analyzing utility and environmental impacts related to the federal rulemaking for residential CAC, lower-than-expected peak utility results prompted Berkeley Lab to investigate the input load shapes that characterize the peaky CAC end use and the submodule that treats load demand response. Investigations enabled a through understanding of the methodology by which hourly load profiles are input to the model and how the model is structured to respond to peak demand. Notably, it was discovered that NEMS was using an October-peaking load shape to represent residential space cooling, which suppressed peak effects to levels lower than expected. An apparent scaling down of the annual load within the load-demand submodule was found, another significant suppressor of the peak impacts. EIA promptly responded to Berkeley Lab's discoveries by updating numerous load shapes for the AEO2002 version of NEMS; EIA is still studying the scaling issue. As a result of this work, it was concluded that Berkeley Lab's customary end-use decrement approach was the most defensible way for Berkeley Lab to perform the recent CAC utility impact analysis. This approach was applied in conjunction with the updated AEO2002 load shapes to perform last year's published rulemaking analysis. Berkeley Lab experimented with several alternative approaches, including modifying the CAC efficiency level, but determined that these did not sufficiently improve the robustness of the method or results to warrant their implementation. Work in this area will continue in preparation for upcoming rulemakings for the other peak coincident end uses, commercial air conditioning and distribution transformers.

  20. Understanding the Dehumidification Performance of Air-Conditioning Equipment at Part-Load Conditions

    SciTech Connect (OSTI)

    Don B. Shirey III; Hugh I. Henderson Jr; Richard A. Raustad

    2006-01-01T23:59:59.000Z

    Air conditioner cooling coils typically provide both sensible cooling and moisture removal. Data from a limited number of field studies (Khattar et al. 1985; Henderson and Rengarajan 1996; Henderson 1998) have demonstrated that the moisture removal capacity of a cooling coil degrades at part-load conditions--especially when the supply fan operates continuously while the cooling coil cycles on and off. Degradation occurs because moisture that condenses on the coil surfaces during the cooling cycle evaporates back into air stream when the coil is off. This degradation affects the ability of cooling equipment to maintain proper indoor humidity levels and may negatively impact indoor air quality. This report summarizes the results of a comprehensive project to better understand and quantify the moisture removal (dehumidification) performance of cooling coils at part-load conditions. A review of the open literature was initially conducted to learn from previous research on this topic. Detailed performance measurements were then collected for eight cooling coils in a controlled laboratory setting to understand the impact of coil geometry and operating conditions on transient moisture condensation and evaporation by the coils. Measurements of cooling coil dehumidification performance and space humidity levels were also collected at seven field test sites. Finally, an existing engineering model to predict dehumidification performance degradation for single-stage cooling equipment at part-load conditions (Henderson and Rengarajan 1996) was enhanced to include a broader range of fan control strategies and an improved theoretical basis for modeling off-cycle moisture evaporation from cooling coils. The improved model was validated with the laboratory measurements, and this report provides guidance for users regarding proper model inputs. The model is suitable for use in computerized calculation procedures such as hourly or sub-hourly building energy simulation programs (e.g., DOE's EnergyPlus building energy simulation program, http://www.energyplus.gov ).

  1. Modelica Library for Building Heating, Ventilation and Air-Conditioning Systems

    E-Print Network [OSTI]

    Modelica Library for Building Heating, Ventilation and Air-Conditioning Systems Michael Wetter available Modelica library for building heating, ventilation and air conditioning systems. The library development is focused on the develop- ment of models for building heating, ventilation and air

  2. Investigating the Performance of Solar Air Conditioning Motivation/Background Findings

    E-Print Network [OSTI]

    -thermal collectors We investigated 3 types of solar cooling technologies: · Air conditioning consumes 10% of all collector size is a critical limiting factor of solar air conditioners · High driving temperatureInvestigating the Performance of Solar Air Conditioning Motivation/Background Findings Two Building

  3. air quality conditions: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    dynamics in the South Coast Air Basin of California. It has also been modified to model pollution in South Korea, Mexico Manohar, Rajit 71 Predicting Air Quality: Current Status...

  4. air conditioning heat: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    solar air collector PV-panel fannon-return valve DHW tank mantle cold waterhot water roof Solar Energy Centre Denmark Danish Technological Institute SEC-R-29 12;Solar air heating...

  5. Commissioning and Diagnosis of VAV Air-Conditioning Systems

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    This paper presents a fault detection and diagnosis (FDD) strategy based on system knowledge, qualitative states and object-oriented statistical process control (SPC) models for typical pressure-independent variable air volume (VAV) air...

  6. Flywheel Cooling: A Cooling Solution for Non Air-Conditioned Buildings

    E-Print Network [OSTI]

    Abernethy, D.

    of evaroration, ventilation and air circulation. These systems are rroviding low-cost cooling for distribution centers, warehouses, and other non air-conditioned industrial assembly rlants with little or no internal 10iids. . The eva[lorative roof cooling...

  7. Operation of Energy-Efficient Air-Conditioned Buildings: An Overview 

    E-Print Network [OSTI]

    Khalil, E. E.

    2010-01-01T23:59:59.000Z

    To design an optimum HVAC airside system that provides comfort and air quality in the air-conditioned spaces with efficient energy consumption is a great challenge. This paper evaluates recent progresses of HVAC airside ...

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

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    temperature field, small supply air temperature difference, large airflow, but no reheater. As the design airflow rate of air conditioning system for cleaning mainly considered to meet the need of the cleanliness class, its air exchange rate was much... above, we had chosen a representative air-handling unit for the testing renovation of 2nd return air system. Cleaning area for this AHU was a capsule clean room with a hundred thousand cleanliness classes. Indoor controlled dry-bulb temperature...

  9. Intelligent Residential Air-Conditioning System with Smart-Grid Functionality

    E-Print Network [OSTI]

    Tesfatsion, Leigh

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

  10. Optimization of the Fin Heat Pipe for Ventilating and Air Conditioning with a Genetic Algorithm

    E-Print Network [OSTI]

    Qian, J.; Sun, D.; Li, G.

    2006-01-01T23:59:59.000Z

    This paper illustrates that use of a heat pipe as a heat-reclaiming device can significantly influence the air-conditioning system. It analyzes the heat transfer model of the uniform annular fin heat pipe under the condition of air conditioning...

  11. Optimization of the Fin Heat Pipe for Ventilating and Air Conditioning with a Genetic Algorithm 

    E-Print Network [OSTI]

    Qian, J.; Sun, D.; Li, G.

    2006-01-01T23:59:59.000Z

    This paper illustrates that use of a heat pipe as a heat-reclaiming device can significantly influence the air-conditioning system. It analyzes the heat transfer model of the uniform annular fin heat pipe under the condition of air conditioning...

  12. air conditioning system: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    may be eliminated. Physical principals governing airflow in fan systems predict available energy savings from using premium air filters. This energy savings may offset the...

  13. air conditioning systems: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    may be eliminated. Physical principals governing airflow in fan systems predict available energy savings from using premium air filters. This energy savings may offset the...

  14. air conditioning engineers: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    was performed to investigate the effects of air-fuel ratio, inlet boost pressure, hydrogen rich fuel reformate, and compression ratio on engine knock behavior. For each...

  15. air conditioning engineering: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    was performed to investigate the effects of air-fuel ratio, inlet boost pressure, hydrogen rich fuel reformate, and compression ratio on engine knock behavior. For each...

  16. air conditioning: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of California eScholarship Repository Summary: chamber, passive sampling, passive solar house, measurementhouse, we planed the distribution of fresh air, passivepassive...

  17. air conditioning deactivation: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of California eScholarship Repository Summary: chamber, passive sampling, passive solar house, measurementhouse, we planed the distribution of fresh air, passivepassive...

  18. HEATING, AIR-CONDITIONING AND REFRIGERATION DISTRIBUTORS INTERNATIONAL...

    Broader source: Energy.gov (indexed) [DOE]

    OE Framework Document and Stakeholder Meeting regarding the Enforcement of the updated Energy Conservation Standards for Air Conditioners, Furnaces and Heat Pumps. DOE EX Parte...

  19. air-conditioned office buildings: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2. Adsorption versus absorptionAssessment of adsorber bed designs in waste-heat driven adsorption cooling systems for vehicle air conditioning and refrigeration Amir Sharafian,...

  20. air-conditioning units part: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    on the green building of the Shanghai Institute of Architectural Science, a solar-powered adsorption air-conditioning system was designed. The operational performance under a...

  1. automotive air-conditioning system: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    on the green building of the Shanghai Institute of Architectural Science, a solar-powered adsorption air-conditioning system was designed. The operational performance under a...

  2. air-conditioning equipment lorentz: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Topic Index 1 Smart School Symposium Heating Ventilation and Air Conditioning Session Energy Storage, Conversion and Utilization Websites Summary: Smart School Symposium Heating...

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

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    The main purpose of this study is to put forward a novel nonlinear feedback control strategy on controlling indoor air temperature by variable air volume. A dynamic model of a typical room for a VAV air-conditioning system is established...

  4. Test and Reconstruction of Air Conditioning System in a Hotel Lobby

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    Two air conditioning systems are equipped in a hotel lobby. It is found from the field test that the actual air rate is 40% and 16% of the nominal value, respectively, of the two systems, which is far lower than the design requirement. The air rate...

  5. Start-Up of Air Conditioning Systems After Periods of Shutdown (Humidity Considerations)

    E-Print Network [OSTI]

    Todd, T. R.

    1986-01-01T23:59:59.000Z

    after the system is restarted. Moe t simply, condensation takes place when moist air flows past surfaces which have been cooled below its dewpoint. In air conditioning this occurs when the cold supply air being deli- vered into the space induces...

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

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    A large share of energy consumption is taken by an air-conditioning system. It worsens the electricity load of the power network. Therefore, more and more scholars are paying attention to research on new types of air-conditioning systems...

  7. Air Conditioner Efficiency Under Hot Dry and Hot Humid Conditions - The Utility Perspective

    E-Print Network [OSTI]

    Amarnath, A.

    94304 E-mail: aamarnath@epri.com Phone: (650) 855-1007 Energy efficient residential air conditioning is important to utilities and their customers. In almost all parts of the U.S., an air conditioner for a dwelling has a high peak demand... energy efficiency programs; ? Actively engage in the USDOE standards proceedings through technical input from collaborative organizations like EPRI and EEI; ? Support emerging technology procurement of air conditioning equipment that is super...

  8. Energy Consumption Measuring and Diagnostic Analysis of Air-conditioning Water System in a Hotel Building in Harbin

    E-Print Network [OSTI]

    Zhao, T.; Zhang, J.; Li, Y.

    2006-01-01T23:59:59.000Z

    This paper introduces an air-conditioning water system in a hotel building in Harbin, finishes its air-conditioning energy consumption measurement in summer conditions, and presents an estimation index of performance of chiller, pump and motor...

  9. Future Air Conditioning Energy Consumption in Developing Countries and what can be done about it: The Potential of Efficiency in the Residential Sector

    E-Print Network [OSTI]

    McNeil, Michael A.; Letschert, Virginie E.

    2008-01-01T23:59:59.000Z

    G. Henderson (2005) Home air conditioning in Europe – howhigher growth in Indian air conditioner saturation duringand A.A. Pavlova ( 2003). Air conditioning market saturation

  10. Low-Flow Liquid Desiccant Air Conditioning: General Guidance and Site Considerations

    SciTech Connect (OSTI)

    Kozubal, E.; Herrmann, L.; Deru, M.; Clark, J.

    2014-09-01T23:59:59.000Z

    Dehumidification or latent cooling in buildings is an area of growing interest that has been identified as needing more research and improved technologies for higher performance. Heating, ventilating, and air-conditioning (HVAC) systems typically expend excessive energy by using overcool-and-reheat strategies to dehumidify buildings. These systems first overcool ventilation air to remove moisture and then reheat the air to meet comfort requirements. Another common strategy incorporates solid desiccant rotors that remove moisture from the air more efficiently; however, these systems increase fan energy consumption because of the high airside pressure drop of solid desiccant rotors and can add heat of absorption to the ventilation air. Alternatively, liquid desiccant air-conditioning (LDAC) technology provides an innovative dehumidification solution that: (1) eliminates the need for overcooling and reheating from traditional cooling systems; and (2) avoids the increased fan energy and air heating from solid desiccant rotor systems.

  11. Retrofitting Air Conditioning and Duct Systems in Hot, Dry Climates

    SciTech Connect (OSTI)

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

    2012-07-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Zhu, H.

    2006-01-01T23:59:59.000Z

    ICEBO2006, Shenzhen, China HVAC Technologies for Energy Efficiency Vol.IV-1-3 Impact of the Variable Refrigerant Volume Air Conditioning System on Building Energy Efficiency Huawei Zhu Zhejiang Urban and Rural Planning Design Institute... conditioning system has led to extensive criticism. 2. THE CHARACTERISTICS OF THE VARIABLE REFRIGERANT VOLUME AIR CONDITIONING SYSTEM AND ITS PRESENT APPLICATION ICEBO2006, Shenzhen, China HVAC Technologies for Energy Efficiency Vol.IV-1-3 2...

  13. Energy Conservation of Air Conditioning Systems in Large Public Buildings

    E-Print Network [OSTI]

    Liu, P.; Li, D.

    2006-01-01T23:59:59.000Z

    cold seasons, the closed middle air layer absorbs the solar energy, and becomes the buffer layer of space between the inside and outside because of the glasshouse effect. In this case, the indoor heat loss can be reduced. While during the hot... and natural climatic microenvironment for the people indoor. Considering the energy conservation and the ecological environmental protection, this system not only satisfies the aesthetic need of the architecture, but also is the need of developing...

  14. Air Conditioning Heating and Refrigeration Institute Comment | Department

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T, Inc.'s Reply Comments AT&T,FACT S HEET FACTAgenda: TheAof Energy Air

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

    E-Print Network [OSTI]

    Mohamed, E.; Abdalla, K. N.

    2010-01-01T23:59:59.000Z

    This paper discusses the effect of a radiant cooling panel system on an indoor air quality (IAQ) of a conditioned space. In this study, ceiling radiant cooling panel, mechanical ventilation with fan coil unit (FCU) and 100% fresh air are used...

  16. Economic Analysis and Comparison of Waste Water Resource Heat Pump Heating and Air-Conditioning System 

    E-Print Network [OSTI]

    Zhang, C.; Wang, S.; Chen, H.; Shi, Y.

    2006-01-01T23:59:59.000Z

    Based on the heating and air-conditioning system of a high-rise residential building in Northern city, this paper provides a discussion on the choice and matching of different types of Waste Water Resource Heat Pump (WWRHP) heating and air...

  17. Economic Analysis and Comparison of Waste Water Resource Heat Pump Heating and Air-Conditioning System

    E-Print Network [OSTI]

    Zhang, C.; Wang, S.; Chen, H.; Shi, Y.

    2006-01-01T23:59:59.000Z

    Based on the heating and air-conditioning system of a high-rise residential building in Northern city, this paper provides a discussion on the choice and matching of different types of Waste Water Resource Heat Pump (WWRHP) heating and air...

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

    E-Print Network [OSTI]

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

    2004-01-01T23:59:59.000Z

    The weather in Kuwait is very dry where the dry-bulb temperature exceeds the wet-bulb temperature more than 20oC in most of the summer months. Thus, the air-conditioning (A/C) system with the water-cooled (WC) condensers is expected to perform more...

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

    E-Print Network [OSTI]

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

    2004-01-01T23:59:59.000Z

    The weather in Kuwait is very dry where the dry-bulb temperature exceeds the wet-bulb temperature more than 20oC in most of the summer months. Thus, the air-conditioning (A/C) system with the water-cooled (WC) condensers is expected to perform more...

  20. Discussion of Air-Conditioning Energy-Savings in Hot-Summer and Cold-Winter Regions

    E-Print Network [OSTI]

    Zheng, W.; Gong, F.; Lou, X.; Cheng, J.

    2006-01-01T23:59:59.000Z

    Introducing several kinds of air-conditioning systems energy conservation measures, and according to the climate of the hot-summer and cold-winter region in China, this paper puts forward an overall conception for air-conditioning energy...

  1. Energy Comparison Between Conventional and Chilled Water Thermal Storage Air Conditioning Systems

    E-Print Network [OSTI]

    Sebzali, M.; Hussain, H. J.; Ameer, B.

    2010-01-01T23:59:59.000Z

    , encouraged by government subsidies and driven by the rapid and continual expansion in building construction, urban development, and the heavy reliance on Air Conditioning (AC) systems for the cooling of buildings. The Chilled Water Thermal Storage (CWTS...

  2. Table HC6.7 Air-Conditioning Usage Indicators by Number of Household...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    9.7 Have Equipment But Do Not Use it... 1.9 0.6 0.5 Q 0.2 0.4 Type of Air-Conditioning Equipment 1, 2 Central System......

  3. Proposal for a Vehicle Level Test Procedure to Measure Air Conditioning Fuel Use: Preprint

    SciTech Connect (OSTI)

    Rugh, J.

    2010-02-01T23:59:59.000Z

    A procedure is described to measure approximate real-world air conditioning fuel use and assess the impact of thermal load reduction strategies in plug-in hybrid electric vehicles.

  4. Energy-Saving Design for Pressure Difference Control in Variable Flow Air Conditioning Systems

    E-Print Network [OSTI]

    Chen, Y.; Zhang, Z.

    2006-01-01T23:59:59.000Z

    This paper analyzes energy-saving design for pressure-difference control in a variable flow air conditioning system, including the application of a pressure-difference control valve and the installation position of a pressure-difference transducer...

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

    E-Print Network [OSTI]

    Zhu, H.

    2006-01-01T23:59:59.000Z

    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...

  6. Modelica Library for Building Heating, Ventilation and Air-Conditioning Systems

    E-Print Network [OSTI]

    Wetter, Michael

    2010-01-01T23:59:59.000Z

    Austria, September 2006. Modelica As- sociation and Arsenalsystems. The ?exibility of Modelica has been T room in [° C]lss. AirConditioning - a Modelica li- o brary for dynamic

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

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    consumption analysis of the building is carried out using the energy consumption code. Velocity and temperature distribution in the air-conditioned zone is computed using CFD. According to the results, the energy consumption and indoor human thermal comfort...

  8. The Earth-Coupled or Geothermal Heat Pump Air Conditioning System

    E-Print Network [OSTI]

    Wagers, H. L.; Wagers, M. C.

    1985-01-01T23:59:59.000Z

    " and next at proper home insulation, window coverings, etc. The other electrical appliances in the home use relatively minor amounts of electricity compared to the air conditioning and hot water heating system. This paper will describe the geothermal heat...

  9. air-conditioning applications final: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    surroundings by the reflection, is used... Liu, P.; Li, D. 2006-01-01 23 Proposal for an Adsorption Solar-Driven Air-Conditioning Unit for Public Offices Texas A&M University -...

  10. automative air-conditioning systems: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and try to identify the important trends. Thorsten Ohl 2002-11-05 63 Proposal for an Adsorption Solar-Driven Air-Conditioning Unit for Public Offices Texas A&M University -...

  11. Analysis of the Diagnostic Methods of the Performance Failure of Heating and Air Conditioning Systems

    E-Print Network [OSTI]

    Li, L.; Zhang, Z.; Sun, Y.; Li, D.; Xie, H.

    2006-01-01T23:59:59.000Z

    The paper introduces some diagnostic methods for the performance failure of heating and air conditioning, analyzes the principle by an example, gives the application characteristics of different methods and supplies the guide for the application...

  12. The Full Water Disposal Ways and Study on Central Air-conditioning Circulation Cooling Water System

    E-Print Network [OSTI]

    Zhang, J.

    2006-01-01T23:59:59.000Z

    This paper has been made the further study about the water quality issue of the central air-conditioning circulation cooling water. Based on the comparison of the existing common adopted disposal ways, put forward the new ways of combination...

  13. air-conditioning direct-fired double-effect: Topics by E-print...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    on the basis... Liu, J.; Mai, Y.; Liu, X. 2006-01-01 30 Discussion of Air-Conditioning Energy-Savings in Hot-Summer and Cold-Winter Regions Texas A&M University - TxSpace...

  14. Fuel Savings and Emission Reductions from Next-Generation Mobile Air Conditioning Technology in India: Preprint

    SciTech Connect (OSTI)

    Chaney, L.; Thundiyil, K.; Chidambaram, S.; Abbi, Y. P.; Anderson, S.

    2007-05-01T23:59:59.000Z

    This paper quantifies the mobile air-conditioning fuel consumption of the typical Indian vehicle, exploring potential fuel savings and emissions reductions these systems for the next generation of vehicles.

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

    E-Print Network [OSTI]

    Liu, P.; Li, D.

    2006-01-01T23:59:59.000Z

    satisfy both the coldness supply in summer and the heat supply in winter basically. In fact, this system supplies a more comfortable environment for the passengers. However, compared to the advanced countries, our train air-conditionings still have...

  16. Feasibility of Municipal Water Mains as Heat Sink for Residential Air-Conditioning

    E-Print Network [OSTI]

    Vliet, G. C.

    1994-01-01T23:59:59.000Z

    It has been proposed that municipal water mains be used as the heat sink or the heat source for air-conditioning or heating, respectively. This paper addresses the extent of thermal contamination associated with the use of municipal water...

  17. air-conditioning systems based: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 A web based CBR system for heating ventilation and air conditioning systems sales support...

  18. Adjudication Concerning the Contract for the Maintenance of Pipework and Heating, Ventilating and Air-Conditioning Installations

    E-Print Network [OSTI]

    1971-01-01T23:59:59.000Z

    Adjudication Concerning the Contract for the Maintenance of Pipework and Heating, Ventilating and Air-Conditioning Installations

  19. Adjudication of a Contract for the Maintenance of Pipework and Heating, Ventilating and Air-Conditioning Installations

    E-Print Network [OSTI]

    1977-01-01T23:59:59.000Z

    Adjudication of a Contract for the Maintenance of Pipework and Heating, Ventilating and Air-Conditioning Installations

  20. Proposed Adjudication of the Contract for the Heating, Ventilating and Air Conditioning Installations for the ISR Buildings

    E-Print Network [OSTI]

    1968-01-01T23:59:59.000Z

    Proposed Adjudication of the Contract for the Heating, Ventilating and Air Conditioning Installations for the ISR Buildings

  1. Desiccant Enhanced Evaporative Air-Conditioning (DEVap): Evaluation of a New Concept in Ultra Efficient Air Conditioning

    SciTech Connect (OSTI)

    Kozubal, E.; Woods, J.; Burch, J.; Boranian, A.; Merrigan, T.

    2011-01-01T23:59:59.000Z

    NREL has developed the novel concept of a desiccant enhanced evaporative air conditioner (DEVap) with the objective of combining the benefits of liquid desiccant and evaporative cooling technologies into an innovative 'cooling core.' Liquid desiccant technologies have extraordinary dehumidification potential, but require an efficient cooling sink. DEVap's thermodynamic potential overcomes many shortcomings of standard refrigeration-based direct expansion cooling. DEVap decouples cooling and dehumidification performance, which results in independent temperature and humidity control. The energy input is largely switched away from electricity to low-grade thermal energy that can be sourced from fuels such as natural gas, waste heat, solar, or biofuels.

  2. September 10, 2013 What is Seawater Air Conditioning (SWAC)?

    E-Print Network [OSTI]

    customer electrical consumption by up to 40% Aligns with Hawaii Clean Energy Initiatives Substantial water · Letters of Intent for 42% of Waikiki SWAC design load Customers · City, State, & Federal agency conditioning usage #12;Why SWAC in Waikiki? Electrical rates are near the highest in the U.S. Hawaii relies

  3. Module Development and Simulation of the Variable Refrigerant Flow Air Conditioning System under Cooling Conditions in Energyplus

    E-Print Network [OSTI]

    Zhou, Y.; Wu, J.; Wang, R.; Shiochi, S.

    2006-01-01T23:59:59.000Z

    ICEBO2006, Shenzhen, China HVAC Technologies for Energy Efficiency Vol.IV-1-2 Module Development and Simulation of the Variable Refrigerant Flow Air Conditioning System under Cooling Conditions in Energyplus Yanping Zhou Jingyi..., especially for those who ICEBO2006, Shenzhen, China HVAC Technologies for Energy Efficiency Vol.IV-1-2 show some interest about high-efficiency systems like VRF, it becomes of interest to compare the VRF to other systems and evaluate VRF?s performance...

  4. Direct Expansion Air Conditioning System Selection for Hot & Humid Climates

    E-Print Network [OSTI]

    Browning, B. K.

    2002-01-01T23:59:59.000Z

    Capacity at Part-Load Conditions In 1996, Henderson and Rengarajan4 published a method for modeling the latent capacity degradation of DX equipment with constant blower operation. This latent degradation model provided critical information need... to match the moisture removal capacity of the selected system to the moisture load. However, the model required an iterative solution and knowledge of equipment parameters that were not readily available during design. In 1998, Henderson published a...

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

    E-Print Network [OSTI]

    Reitz, Sven; Schneider, Peter

    2008-01-01T23:59:59.000Z

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

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

    SciTech Connect (OSTI)

    None

    2010-09-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    To reduce the energy consumption of air conditioning systems, we can use the VRV air conditioning system to supply cold loads in the winter for rooms in the construction inner zone where cold loads need to be supplied. The VRV air...

  8. A comparison between the use of natural air and air containing ozone in conditioning farm products

    E-Print Network [OSTI]

    Wilkes, Lambert Henry

    1953-01-01T23:59:59.000Z

    eo 3 at ead of' test 1 El!teen sdautes aEter starts TA 3L' lV . 'UIPAFr G. '' " 'Ys". LTI Jk' DU""D ". . 0/0 OF, IfX VTAAF, AX& r 8;ING AIR Test No, Average Tsnpssntu rap Dsg Average 'relative duwiditys Psr . "snt Average Teapsrat urse... 95m 5 93+0 98, 0 97i5 96 2 98 0 96+ 5 91 5 95+3 98iO 9V 0 92vO 95 6 102~3 98+ 5 98 5 99i7 102, 8 96 3 100, 1 99o7 92K 94+0 95+1 93. 1 91m 5 94 2 92 8 92sg 91. 3 91. 3 91e6 91, 4 92, 5 92eO 89e3 91 2 69 0 69 0 60...

  9. Modeling and Control of Aggregated Air Conditioning Loads Under Realistic Conditions

    SciTech Connect (OSTI)

    Chang, Chin-Yao; Zhang, Wei; Lian, Jianming; Kalsi, Karanjit

    2013-02-24T23:59:59.000Z

    Demand-side control is playing an increasingly important role in smart grid control strategies. Modeling the dynamical behavior of a large population of appliances is especially important to evaluate the effectiveness of various load control strategies. In this paper, a high accuracy aggregated model is first developed for a population of HVAC units. The model efficiently includes statistical information of the population, systematically deals with heterogeneity, and accounts for a second-order effect necessary to accurately capture the transient dynamics in the collective response. Furthermore, the model takes into account the lockout effect of the compressor in order to represent the dynamics of the system under control more accurately. Then, a novel closed loop load control strategy is designed to track a desired demand curve and to ensure a stable and smooth response.

  10. The effect of hardware configuration on the performance of residential air conditioning systems at high outdoor ambient temperatures

    E-Print Network [OSTI]

    Bain, Joel Alan

    1995-01-01T23:59:59.000Z

    A study was performed which investigated the effect of hardware configuration on air conditioning cooling system performance at high outdoor temperatures. The initial phase of the investigation involved the testing of ten residential air...

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

    E-Print Network [OSTI]

    Zhuo, X.; Ding, J.; Yang, X.; Chen, S.; Yang, J.

    2006-01-01T23:59:59.000Z

    Using a special solar air heater to gain heat power for regenerating an adsorption desiccant wheel made by composite silica gel, a desiccant air-conditioning experimentation system was designed and manufactured. Combining the advantage of measure...

  12. Analysis of Air Conditioning Effectiveness vs. Outdoor Conditions: Traditional Bins or Joint Frequency Bins?

    E-Print Network [OSTI]

    Cohen, B. M.

    1998-01-01T23:59:59.000Z

    are fairly high. Offices that have a lot of sensible heat generation due to lighting and office equipment tend to be high, maybe greater than 0.9. (Other applications, like ice rinks that have internal cooling, can be low or even negative, and do... ratio ranges on the second axis. This form of binning is easily accomplished if a utility like ~in~aker~~ is used to generate the binned data set. INTRODUCTION The factors which should be considered in the specification of heating and air...

  13. Smart Operations of Air-Conditioning and Lighting Systems in Government Buildings for Peak Power Reduction

    E-Print Network [OSTI]

    Al-Hadban, Y.; Maheshwari, G. P.; Al-Nakib, D.; Al-Mulla, A.; Alasseri, R.

    During the summer 2007 smart operation strategies for air-conditioning (A/C) and lighting systems were developed and tested in a number of governmental buildings in Kuwait as one of the solutions to reduce the national peak demand for electrical...

  14. Evaluation of a Local Air Conditioning Duty Cycling Device as a Load Management Tool

    E-Print Network [OSTI]

    Schneider, K.; Thedford, M.

    1986-01-01T23:59:59.000Z

    During the summer of 1984, a test was performed to evaluate a local air conditioning duty cycling device as a tool to reduce TUEC's system summer peak demand. In addition to the local duty cycling device, a direct load control device using a power...

  15. Aggregated Modeling and Control of Air Conditioning Loads for Demand Response

    E-Print Network [OSTI]

    Zhang, Wei

    1 Aggregated Modeling and Control of Air Conditioning Loads for Demand Response Wei Zhang, Member, IEEE Abstract--Demand response is playing an increasingly impor- tant role in the efficient loads is especially important to evaluate the effec- tiveness of various demand response strategies

  16. "Table HC12.7 Air-Conditioning Usage Indicators by Midwest Census...

    U.S. Energy Information Administration (EIA) Indexed Site

    "Type of Air-Conditioning Equipment1, 2" "Central System",65.9,17.3,11.3,6 "Without a Heat Pump",53.5,16.2,10.6,5.6 "With a Heat Pump",12.3,1.1,0.8,0.4 "WindowWall...

  17. "Table HC11.7 Air-Conditioning Usage Indicators by Northeast...

    U.S. Energy Information Administration (EIA) Indexed Site

    "Type of Air-Conditioning Equipment1, 2" "Central System",65.9,6,5.2,0.8 "Without a Heat Pump",53.5,5.5,4.8,0.7 "With a Heat Pump",12.3,0.5,0.4,"Q" "WindowWall...

  18. "Table HC10.7 Air-Conditioning Usage Indicators by U.S. Census...

    U.S. Energy Information Administration (EIA) Indexed Site

    of Air-Conditioning Equipment1, 2" "Central System",65.9,6,17.3,32.1,10.5 "Without a Heat Pump",53.5,5.5,16.2,23.2,8.7 "With a Heat Pump",12.3,0.5,1.1,9,1.7 "WindowWall...

  19. "Table HC13.7 Air-Conditioning Usage Indicators by South Census...

    U.S. Energy Information Administration (EIA) Indexed Site

    of Air-Conditioning Equipment1, 2" "Central System",65.9,32.1,17.6,5.2,9.3 "Without a Heat Pump",53.5,23.2,10.9,3.8,8.4 "With a Heat Pump",12.3,9,6.7,1.4,0.9 "WindowWall...

  20. "Table HC14.7 Air-Conditioning Usage Indicators by West Census...

    U.S. Energy Information Administration (EIA) Indexed Site

    of Air-Conditioning Equipment1, 2" "Central System",65.9,10.5,3.9,6.5 "Without a Heat Pump",53.5,8.7,3.2,5.5 "With a Heat Pump",12.3,1.7,0.7,1 "WindowWall...

  1. "Table HC15.7 Air-Conditioning Usage Indicators by Four Most...

    U.S. Energy Information Administration (EIA) Indexed Site

    of Air-Conditioning Equipment1, 2" "Central System",65.9,1.1,6.4,6.4,5.4 "Without a Heat Pump",53.5,1.1,3.5,5.7,4.9 "With a Heat Pump",12.3,"Q",2.9,0.7,0.5 "WindowWall...

  2. RHEOLOGICAL STUDY OF TWO-PHASE SECONDARY FLUIDS FOR REFRIGERATION AND AIR CONDITIONING.

    E-Print Network [OSTI]

    Boyer, Edmond

    RHEOLOGICAL STUDY OF TWO-PHASE SECONDARY FLUIDS FOR REFRIGERATION AND AIR CONDITIONING. Mylène have promising application in refrigeration thanks to their large cooling capacity and their storage Because it is nowadays necessary to phase out CFCs or HCFCs fluids from the refrigeration industry

  3. Research on Thermal Properties in a Phase Change Wallboard Room Based on Air Conditioning Cold Storage

    E-Print Network [OSTI]

    Feng, G.; Li, W.; Chen, X.

    2006-01-01T23:59:59.000Z

    After comparing the thermal performance parameters of an ordinary wall room to a phase change wall (PCW) room, we learn that phase change wallboard affects the fluctuation of temperature in air-conditioning room in the summer. We built a PCW room...

  4. Proceedings of the 1993 non-fluorocarbon insulation, refrigeration and air conditioning technology workshop

    SciTech Connect (OSTI)

    Not Available

    1994-09-01T23:59:59.000Z

    Sessions included: HFC blown polyurethanes, carbon dioxide blown foam and extruded polystyrenes, plastic foam insulations, evacuated panel insulation, refrigeration and air conditioning, absorption and adsorption and stirling cycle refrigeration, innovative cooling technologies, and natural refrigerants. Selected papers have been indexed separately for inclusion in the Energy Science and Technology Database.

  5. Comment submitted by the Air Conditioning, Heating and Refrigeration Institute (AHRI) regarding the Energy Star Verification Testing Program

    Broader source: Energy.gov [DOE]

    This document is a comment submitted by the Air Conditioning, Heating and Refrigeration Institute (AHRI) regarding the Energy Star Verification Testing Program

  6. Performance and evaluation of gas engine driven rooftop air conditioning equipment at the Willow Grove (PA) Naval Air Station

    SciTech Connect (OSTI)

    Armstrong, P.R.; Conover, D.R.

    1993-05-01T23:59:59.000Z

    In a field evaluation conducted for the US Department of Energy (DOE) Office of Federal Energy Management Program (FEMP), the Pacific Northwest Laboratory (PNL) examined the performance of a new US energy-related technology under the FEMP Test Bed Demonstration Program. The technology was a 15-ton natural gas engine driven roof top air conditioning unit. Two such units were installed on a naval retail building to provide space conditioning to the building. Under the Test Bed Demonstration Program, private and public sector interests are focused to support the installation and evaluation of new US technologies in the federal sector. Participating in this effort under a Cooperative Research and Development Agreement (CRADA) with DOE were the American Gas Cooling Center, Philadelphia Electric Company, Thermo King Corporation, and the US Naval Air Station at Willow Grove, Pennsylvania. Equipment operating and service data as well as building interior and exterior conditions were secured for the 1992 cooling season. Based on a computer assessment of the building using standard weather data, a comparison was made with the energy and operating costs associated with the previous space conditioning system. Based on performance during the 1992 cooling season and adjusted to a normal weather year, the technology will save the site $6,000/yr in purchased energy costs. An additional $9,000 in savings due to electricity demand ratchet charge reductions will also be realized. Detailed information on the technology, the installation, and the results of the technology test are provided to illustrate the advantages to the federal sector of using this technology. A history of the CRADA development process is also reported.

  7. ISSUANCE 2015-07-27: Energy Conservation Program: Test Procedures for Small, Large, and Very Large Air-Cooled Commercial Package Air Conditioning and Heating Equipment, Notice of Proposed Rulemaking

    Broader source: Energy.gov [DOE]

    Energy Conservation Program: Test Procedures for Small, Large, and Very Large Air-Cooled Commercial Package Air Conditioning and Heating Equipment, Notice of Proposed Rulemaking

  8. Low-Flow Liquid Desiccant Air-Conditioning: Demonstrated Performance and Cost Implications

    SciTech Connect (OSTI)

    Kozubal, E.; Herrmann, L.; Deru, M.; Clark, J.; Lowenstein, A.

    2014-09-01T23:59:59.000Z

    Cooling loads must be dramatically reduced when designing net-zero energy buildings or other highly efficient facilities. Advances in this area have focused primarily on reducing a building's sensible cooling loads by improving the envelope, integrating properly sized daylighting systems, adding exterior solar shading devices, and reducing internal heat gains. As sensible loads decrease, however, latent loads remain relatively constant, and thus become a greater fraction of the overall cooling requirement in highly efficient building designs, particularly in humid climates. This shift toward latent cooling is a challenge for heating, ventilation, and air-conditioning (HVAC) systems. Traditional systems typically dehumidify by first overcooling air below the dew-point temperature and then reheating it to an appropriate supply temperature, which requires an excessive amount of energy. Another dehumidification strategy incorporates solid desiccant rotors that remove water from air more efficiently; however, these systems are large and increase fan energy consumption due to the increased airside pressure drop of solid desiccant rotors. A third dehumidification strategy involves high flow liquid desiccant systems. These systems require a high maintenance separator to protect the air distribution system from corrosive desiccant droplet carryover and so are more commonly used in industrial applications and rarely in commercial buildings. Both solid desiccant systems and most high-flow liquid desiccant systems (if not internally cooled) add sensible energy which must later be removed to the air stream during dehumidification, through the release of sensible heat during the sorption process.

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

    SciTech Connect (OSTI)

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

    2011-07-31T23:59:59.000Z

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

  10. FINANCE & ACCOUNTING FINANCE & ACCOUNTING

    E-Print Network [OSTI]

    Ponce, V. Miguel

    FINANCE & ACCOUNTING FINANCE & ACCOUNTING Director of Finance & Accounting Rich Rechif Accounts Katherine Ivko PURCHASING Purchasing Manager Small Business Liaison Officer Denise Carroll Finance

  11. Retrofitting Inefficient Rooftop Air-Conditioning Units Reduces U.S. Navy Energy Use (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-04-01T23:59:59.000Z

    As part of the U.S. Navy's overall energy strategy, the National Renewable Energy Laboratory (NREL) partnered with the Naval Facilities Engineering Command (NAVFAC) to demonstrate market-ready energy efficiency measures, renewable energy generation, and energy systems integration. One such technology - retrofitting rooftop air-conditioning units with an advanced rooftop control system - was identified as a promising source for reducing energy use and costs, and can contribute to increasing energy security.

  12. Monitoring the Performance of a Residential Central Air Conditioner under Degraded Conditions on a Test Bench 

    E-Print Network [OSTI]

    Palani, M.; O'Neal, D. L.; Haberl, J. S.

    1992-01-01T23:59:59.000Z

    constituted 17.2% of the total failure. The failure rates of compressors was 13.5% and outdoor fans was about 11.5%. Lewis surveyed 492 large HVAC dealers to compile information on heat pump service life [5]. He discovered that refrigerant leaks were the major... valve increases. PREDICTION OF DEGRADED CONDITIONS There are several steady state simulation programs which are available to predict the design conditions of air conditioners and heat pumps [20, 21]. The ORNL and NIST models are popular and extensively...

  13. The Histoty of Ventilation and Air Conditioning is CERN Up to Date with the latest Technological Developments?

    E-Print Network [OSTI]

    Kühnl-Kinel, J

    2000-01-01T23:59:59.000Z

    The invention of ventilation cannot be ascribed to a certain date. It started with simple aeration when man brought fire into his abode and continued through different stages including air cooling using ice to finally arrive at the time when ventilation and air conditioning has become an essential part of our life and plays an important role in human evolution. This paper presents the history of ventilation and air conditioning, explains the key constraints over the centuries, and shows its influence on everyday life. Some examples of previous air-conditioning plants are described and different approaches to the way of calculation of ventilation systems discussed. It gives an overview of the Heating, Ventilation and Air Conditioning (HVAC) installations at CERN and points out their particularities. It also compares them with the latest technological developments in the field as well as showing the new trends that are being applied at CERN.

  14. Risk Factors in Heating, Ventilating, and Air-Conditioning Systems for Occupant Symptoms in

    E-Print Network [OSTI]

    Mendell, M.J.; Lei-Gomez, Q.; Mirer, A.; Seppanen, O.; Brunner, G.

    2007-01-01T23:59:59.000Z

    LBNL-61870 Risk Factors in Heating, Ventilating, and Air-for Occupant Symptoms in Heating, Ventilating, and Air-uncertain. Characteristics of heating, ventilating, and air-

  15. Modelica Library for Building Heating, Ventilation and Air-Conditioning Systems

    E-Print Network [OSTI]

    Wetter, Michael

    2010-01-01T23:59:59.000Z

    for Building Heating, Ventilation and Air-Conditioningfor Building Heating, Ventilation and Air-Conditioningfor building heating, ventilation and air con- ditioning

  16. An Analysis of Price Determination and Markups in the Air-Conditioning and Heating Equipment Industry

    SciTech Connect (OSTI)

    Dale, Larry; Millstein, Dev; Coughlin, Katie; Van Buskirk, Robert; Rosenquist, Gregory; Lekov, Alex; Bhuyan, Sanjib

    2004-01-30T23:59:59.000Z

    In this report we calculate the change in final consumer prices due to minimum efficiency standards, focusing on a standard economic model of the air-conditioning and heating equipment (ACHE) wholesale industry. The model examines the relationship between the marginal cost to distribute and sell equipment and the final consumer price in this industry. The model predicts that the impact of a standard on the final consumer price is conditioned by its impact on marginal distribution costs. For example, if a standard raises the marginal cost to distribute and sell equipment a small amount, the model predicts that the standard will raise the final consumer price a small amount as well. Statistical analysis suggest that standards do not increase the amount of labor needed to distribute equipment the same employees needed to sell lower efficiency equipment can sell high efficiency equipment. Labor is a large component of the total marginal cost to distribute and sell air-conditioning and heating equipment. We infer from this that standards have a relatively small impact on ACHE marginal distribution and sale costs. Thus, our model predicts that a standard will have a relatively small impact on final ACHE consumer prices. Our statistical analysis of U.S. Census Bureau wholesale revenue tends to confirm this model prediction. Generalizing, we find that the ratio of manufacturer price to final consumer price prior to a standard tends to exceed the ratio of the change in manufacturer price to the change in final consumer price resulting from a standard. The appendix expands our analysis through a typical distribution chain for commercial and residential air-conditioning and heating equipment.

  17. LiCl Dehumidifier LiBr absorption chiller hybrid air conditioning system with energy recovery

    DOE Patents [OSTI]

    Ko, Suk M. (Huntsville, AL)

    1980-01-01T23:59:59.000Z

    This invention relates to a hybrid air conditioning system that combines a solar powered LiCl dehumidifier with a LiBr absorption chiller. The desiccant dehumidifier removes the latent load by absorbing moisture from the air, and the sensible load is removed by the absorption chiller. The desiccant dehumidifier is coupled to a regenerator and the desiccant in the regenerator is heated by solar heated hot water to drive the moisture therefrom before being fed back to the dehumidifier. The heat of vaporization expended in the desiccant regenerator is recovered and used to partially preheat the driving fluid of the absorption chiller, thus substantially improving the overall COP of the hybrid system.

  18. Cascade Reverse Osmosis Air Conditioning System: Cascade Reverse Osmosis and the Absorption Osmosis Cycle

    SciTech Connect (OSTI)

    None

    2010-09-01T23:59:59.000Z

    BEETIT Project: Battelle is developing a new air conditioning system that uses a cascade reverse osmosis (RO)-based absorption cycle. Analyses show that this new cycle can be as much as 60% more efficient than vapor compression, which is used in 90% of air conditioners. Traditional vapor-compression systems use polluting liquids for a cooling effect. Absorption cycles use benign refrigerants such as water, which is absorbed in a salt solution and pumped as liquid—replacing compression of vapor. The refrigerant is subsequently separated from absorbing salt using heat for re-use in the cooling cycle. Battelle is replacing thermal separation of refrigerant with a more efficient reverse osmosis process. Research has shown that the cycle is possible, but further investment will be needed to reduce the number of cascade reverse osmosis stages and therefore cost.

  19. Development of empirical temperature and humidity-based degraded-condition indicators for low-tonnage air conditioners

    E-Print Network [OSTI]

    Watt, James Bonner

    1997-01-01T23:59:59.000Z

    of conditions resulting in inefficient operation as reported by Neal from a survey of 10 residential air-conditioning units (Neal 1986, 1987). Problem Refri erant over-char e Refri erant under-char e Eva orator airflow inade uate Ev orator airflow too hi... wheel Freon char e Com onent Condition ratin Poor to Fair Poor to Fair Poor to Fair Return-air lenum Condensate s stem Su 1 air ducts Eva orator Coils Filter Controls Poor to Fair Poor to Avera e Fair to Avera e Fair to Good Fair to Good...

  20. Commentary: Air-conditioning as a risk for increased use of healthservices

    SciTech Connect (OSTI)

    Mendell, Mark J.

    2004-06-01T23:59:59.000Z

    In this issue of the journal, Preziosi et al. [2004] report the first study to assess differences in the utilization of health care related to the presence of air-conditioning in office workplaces. Although the study was simple and cross-sectional, the data variables from questionnaires, and the findings subject to a variety of questions, the findings are striking enough to deserve clarification. The study used a large random national sample of French women assembled for another purpose (to study antioxidant nutrients and prevention of cancer and cardiovascular disease). Participants reported health services and health events in monthly questionnaires over 1 year, and in one questionnaire in the middle of that period also reported whether air-conditioning was in use at their workplace. Fifteen percent of participants reported air-conditioning at work. Analyses adjusting for age and smoking status of participants found increases in most outcomes assessed: use of specific kinds of physicians, sickness absence, and hospital stays. While the increases in odds ratios (OR) and 95% confidence intervals (CI) were statistically significant for only otorhinolaryngology [OR (95% CI) = 2.33 (1.35-4.04)] and sickness absence [1.70 (1.13-2.58)], other increases were notable--dermatology [1.6 (0.98-2.65)]; hospital stay [1.51 (0.92-2.45)], and pneumonology [2.10 (0.65-6.82)]. The least elevated outcomes were for general practice medicine [0.99 (0.65-1.48)] and global medical visits [1.18 (0.67-2.07)]. [Preziosi et al., 2004 ,(Table 2)] Odds ratios for relatively common health outcomes often lie farther from the null than the risk ratios most useful for quantifying the increase in risk. Risk ratios, or prevalence ratios (PRs, the equivalent measure of effect for cross-sectional data), have seldom been used because of the convenience and availability of logistic regression models that estimate odds ratios. With baseline prevalences ranging up to 85.7% in the data from Preziosi et al. [2004], PRs allow a more appropriate estimate of the increase in each outcome associated with the risk factor of air-conditioning. The increase in prevalence was roughly estimated as [100* (crude PR * adjusted OR/crude OR)-100] %. Based on the data in Table 2 of Preziosi et al. [ 2004], estimates for the increased prevalence associated with air-conditioned offices include increases of 120% in otorhinolaryngology visits, and 40% in sickness absence. If these associated increases represented valid causal relationships, it would indicate enormous costs for employers and for society associated with air-conditioning systems, from increased health care and for reduced workplace productivity from sickness absence, in addition to a large burden of disease on workers.

  1. Solutions for Summer Electric Power Shortages: Demand Response andits Applications in Air Conditioning and Refrigerating Systems

    SciTech Connect (OSTI)

    Han, Junqiao; Piette, Mary Ann

    2007-11-30T23:59:59.000Z

    Demand response (DR) is an effective tool which resolves inconsistencies between electric power supply and demand. It further provides a reliable and credible resource that ensures stable and economical operation of the power grid. This paper introduces systematic definitions for DR and demand side management, along with operational differences between these two methods. A classification is provided for DR programs, and various DR strategies are provided for application in air conditioning and refrigerating systems. The reliability of DR is demonstrated through discussion of successful overseas examples. Finally, suggestions as to the implementation of demand response in China are provided.

  2. Solution of Air Conditioning Cooling Load Temperature for New Energy-Saving Walls

    E-Print Network [OSTI]

    Wang, X.; Hong, J.; Deying, L.

    2006-01-01T23:59:59.000Z

    ICEBO2006, Shenzhen, China Enve lope Technologies for Building Energy Efficiency Vol.II-3-5 Solution of Air Conditioning Cooling Load Temperature for New Energy-Saving Walls Xuejin Wang Jing Hong Deying Li School of Building.... The formula used to calculate the heat transfer ICEBO2006, Shenzhen, China Enve lope Technologies for Building Energy Efficiency Vol.II-3-5 thermal response factors are as follows: 0j = ? ? ? = ??+= 1 i )e1(BK)0(Y i ? ? Tab.1 New energy...

  3. Fuel-Free Compressed-Air Energy Storage: Fuel-Free, Ubiquitous Compressed-Air Energy Storage and Power Conditioning

    SciTech Connect (OSTI)

    None

    2010-09-13T23:59:59.000Z

    GRIDS Project: General Compression has developed a transformative, near-isothermal compressed air energy storage system (GCAES) that prevents air from heating up during compression and cooling down during expansion. When integrated with renewable generation, such as a wind farm, intermittent energy can be stored in compressed air in salt caverns or pressurized tanks. When electricity is needed, the process is reversed and the compressed air is expanded to produce electricity. Unlike conventional compressed air energy storage (CAES) projects, no gas is burned to convert the stored high-pressure air back into electricity. The result of this breakthrough is an ultra-efficient, fully shapeable, 100% renewable and carbon-free power product. The GCAES™ system can provide high quality electricity and ancillary services by effectively integrating renewables onto the grid at a cost that is competitive with gas, coal and nuclear generation.

  4. Smart Operations of Air-Conditioning and Lighting Systems in a Government Buildings for Peak Power Reduction

    E-Print Network [OSTI]

    Al-Hadban, Y.; Maheshwari, G. P.; Al-Nakib, D.; Al-Mulla, A.; Alasseri, R.

    2010-01-01T23:59:59.000Z

    This paper presents the achievements of implementing smart operations strategies for air-conditioning (A/C) and lighting systems in Justice Palace Complex (JPC), Kuwait during the summer 2007. The peak load of this building was 3700 k...

  5. Experimental Research and Performance Analysis of a Solar-Powered Air-conditioning System in a Green Building

    E-Print Network [OSTI]

    Zhai, X.; Wang, R.; Dai, Y.; Wu, J.

    2006-01-01T23:59:59.000Z

    Based on the green building of the Shanghai Institute of Architectural Science, a solar-powered adsorption air-conditioning system was designed. The operational performance under a typical operating mode in summer was studied, which includes...

  6. Influence Of Upper Air Conditions On The Patagonia Icefields L. A. Rasmussen, H. Conway, C. F. Raymond

    E-Print Network [OSTI]

    Rasmussen, L.A.

    Influence Of Upper Air Conditions On The Patagonia Icefields L. A. Rasmussen, H. Conway, C. F to investigate changes in precipitation and snowfall over the Patagonia ice- fields during 1960-99. Apparently

  7. Energy Conservation and Comfort of Heat Pump Desiccant Air Conditioning System in Actual Living Space in Summer

    E-Print Network [OSTI]

    Miyashita, Yasushi

    Energy Conservation and Comfort of Heat Pump Desiccant Air Conditioning System in Actual Living and total heat exchanger in terms of both energy conservation and thermal comfort in summer. 1. COP

  8. Innovative Method for Performance Inspections often save 20-30% through Optimization of Air-Conditioning and Refrigeration

    E-Print Network [OSTI]

    Berglof, K.

    2010-01-01T23:59:59.000Z

    Air-conditioning, refrigeration and heat pump equipment is using 15 to 20% of the electrical energy globally. Many times these systems do not operate in an effective way. The paper present a method for and experience from performance testing...

  9. The effect of respiration heat of sorghum grain on the design of conditioned-air storage systems

    E-Print Network [OSTI]

    Haile, Danel Gene

    1967-01-01T23:59:59.000Z

    THE EFFECT OF RESPIRATION HEAT OF SORGHUM GRAIN ON THE DESIGN OF CONDITIONED-AIR STORAGE SYSTEMS A Thesis by DANEL GENE HAILE Submitted to the Graduate College of Texas AIM University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE January 1967 Major Subject: Agricultural Engineering THE EFFECT OF RESPIRATION HEAT OF SORGHUM GRAIN ON THE DESIGN OF CONDITIONED-AIR STORAGE SYSTEMS A Thesis by DANEL GENE HAILE Approved as to style and content by: C airman...

  10. Experimental investigation on the photovoltaic-thermal solar heat pump air-conditioning system on water-heating mode

    SciTech Connect (OSTI)

    Fang, Guiyin; Hu, Hainan; Liu, Xu [Department of Physics, Nanjing University, Nanjing 210093 (China)

    2010-09-15T23:59:59.000Z

    An experimental study on operation performance of photovoltaic-thermal solar heat pump air-conditioning system was conducted in this paper. The experimental system of photovoltaic-thermal solar heat pump air-conditioning system was set up. The performance parameters such as the evaporation pressure, the condensation pressure and the coefficient of performance (COP) of heat pump air-conditioning system, the water temperature and receiving heat capacity in water heater, the photovoltaic (PV) module temperature and the photovoltaic efficiency were investigated. The experimental results show that the mean photovoltaic efficiency of photovoltaic-thermal (PV/T) solar heat pump air-conditioning system reaches 10.4%, and can improve 23.8% in comparison with that of the conventional photovoltaic module, the mean COP of heat pump air-conditioning system may attain 2.88 and the water temperature in water heater can increase to 42 C. These results indicate that the photovoltaic-thermal solar heat pump air-conditioning system has better performances and can stably work. (author)

  11. Advances in the development of energy efficient technologies: Sea Water Air Conditioning (SWAC)

    SciTech Connect (OSTI)

    Coony, J.E. [Boston Pacific Co., Inc., Washington, DC (United States)

    1996-11-01T23:59:59.000Z

    Sea water air conditioning (SWAC) is a cost effective and environmentally friendly alternative to and/or enhancement of air conditioning from mechanical chillers. SWAC pumps cold sea water from the appropriate ocean depths (50 to 3,000 feet depending on the climate and local characteristics) to the shore where it replaces (by direct cooling) or enhances (through use as condenser water) large mechanical chillers found in coastal facilities. SWAC direct cooling uses less than twenty per cent of the electricity of a mechanical chiller and uses no refrigerants whatsoever. Indirect cooling also offers substantial energy savings. Both systems dispense with the need for a cooling tower. Technical advances over the last twenty years in corrosion resistant alloys (titanium or aluminum), bio-fouling deterrence, and deep ocean pipeline deployment allow SWAC installations to use reliable, off-the-shelf technology. SWAC works in a variety of climates (existing installations are in Hawaii and Halifax, Nova Scotia), giving it significant domestic and international potential. Economy-of-scale advantages make it attractive to district cooling schemes.

  12. Robust optimization of a 2D air conditioning duct using kriging Deliverable WP.2.2.2.B of the ANR / OMD2 project

    E-Print Network [OSTI]

    Boyer, Edmond

    Robust optimization of a 2D air conditioning duct using kriging Deliverable WP.2.2.2.B of the ANR optimization of a 2D air conditioning duct. For comparison purposes, deterministic designs were first obtained air conditioning duct. The uncertainties affect the pipe shape. The mean response, expressed in terms

  13. Accountancy Accountancy and Finance

    E-Print Network [OSTI]

    Little, Tony

    BAcc(Hons) Accountancy BA(Hons) Finance BAcc(Hons) Accountancy and Finance Does it add up? Invest job in your chosen financial career #12;Did you know? · BAcc(Hons)Accountancy andtheBA(Hons)Finance demonstrateyourstrengths andconnectwithfinancial employersworldwide. Why Study Accountancy and Finance? Accountancy

  14. High Efficiency Liquid-Desiccant Regenerator for Air Conditioning and Industrial Drying

    SciTech Connect (OSTI)

    Andrew Lowenstein

    2005-12-19T23:59:59.000Z

    Over 2 quads of fossil fuels are used each year for moisture removal. This includes industrial and agricultural processes where feedstocks and final products must be dried, as well as comfort conditioning of indoor spaces where the control of humidity is essential to maintaining healthy, productive and comfortable working conditions. Desiccants, materials that have a high affinity for water vapor, can greatly reduce energy use for both drying and dehumidification. An opportunity exists to greatly improve the competitiveness of advanced liquid-desiccant systems by increasing the efficiency of their regenerators. It is common practice within the chemical process industry to use multiple stage boilers to improve the efficiency of thermal separation processes. The energy needed to regenerate a liquid desiccant, which is a thermal separation process, can also be reduced by using a multiple stage boiler. In this project, a two-stage regenerator was developed in which the first stage is a boiler and the second stage is a scavenging-air regenerator. The only energy input to this regenerator is the natural gas that fires the boiler. The steam produced in the boiler provides the thermal energy to run the second-stage scavenging-air regenerator. This two-stage regenerator is referred to as a 1?-effect regenerator. A model of the high-temperature stage of a 1?-effect regenerator for liquid desiccants was designed, built and successfully tested. At nominal operating conditions (i.e., 2.35 gpm of 36% lithium chloride solution, 307,000 Btu/h firing rate), the boiler removed 153 lb/h of water from the desiccant at a gas-based efficiency of 52.9 % (which corresponds to a COP of 0.95 when a scavenging-air regenerator is added). The steam leaving the boiler, when condensed, had a solids concentration of less than 10 ppm. This low level of solids in the condensate places an upper bound of about 6 lb per year for desiccant loss from the regenerator. This low loss will not create maintenance problems nor will it significantly increase operating expenses. An energy balance on the boiler showed that heat loss through the insulated jacket was 10%. This value is much higher than the 2% to 5% that is typical of most boilers and indicates a need to better insulate the unit. With insulation that brings jacket losses down to 5%, a 1?-effect regenerator that uses this boiler as its high-temperature stage will have a gas-based COP of 1.05. The estimated cost to manufacture a 300-lb/h, 1?-effect regenerator at 500 units per year is $17,140. Unfortunately, the very high cost for natural gas that now prevails in the U.S. makes it very difficult for a gas-fired LDAC to compete against an electric vapor-compression air conditioner in HVAC applications. However, there are important industrial markets that need very dry air where the high price of natural gas will encourage the sale of a LDAC with the 1?-effect regenerator since in these markets it competes against less efficient gas-fired desiccant technologies. A manufacturer of industrial dehumidification equipment is now negotiating a sales agreement with us that would include the 1?-effect regenerator.

  15. ENSC 461 PROJECT: Next generation air conditioning systems for vehicles Assigned date: Feb. 21, 2011 Due date: April 11, 2011

    E-Print Network [OSTI]

    Bahrami, Majid

    1 ENSC 461 PROJECT: Next generation air conditioning systems for vehicles Assigned date: Feb. 21's engine, or battery pack in case of HEVs and EVs. This power draw is equivalent to a 1200-kg sedan driving both systems under various driving and climate conditions. #12;2 The project report should also

  16. New Automotive Air Conditioning System Simulation Tool Developed in MATLAB/Simulink

    SciTech Connect (OSTI)

    Kiss, T.; Chaney, L.; Meyer, J.

    2013-07-01T23:59:59.000Z

    Further improvements in vehicle fuel efficiency require accurate evaluation of the vehicle's transient total power requirement. When operated, the air conditioning (A/C) system is the largest auxiliary load on a vehicle; therefore, accurate evaluation of the load it places on the vehicle's engine and/or energy storage system is especially important. Vehicle simulation software, such as 'Autonomie,' has been used by OEMs to evaluate vehicles' energy performance. A transient A/C simulation tool incorporated into vehicle simulation models would also provide a tool for developing more efficient A/C systems through a thorough consideration of the transient A/C system performance. The dynamic system simulation software Matlab/Simulink was used to develop new and more efficient vehicle energy system controls. The various modeling methods used for the new simulation tool are described in detail. Comparison with measured data is provided to demonstrate the validity of the model.

  17. Evaluation Framework and Analyses for Thermal Energy Storage Integrated with Packaged Air Conditioning

    SciTech Connect (OSTI)

    Kung, F.; Deru, M.; Bonnema, E.

    2013-10-01T23:59:59.000Z

    Few third-party guidance documents or tools are available for evaluating thermal energy storage (TES) integrated with packaged air conditioning (AC), as this type of TES is relatively new compared to TES integrated with chillers or hot water systems. To address this gap, researchers at the National Renewable Energy Laboratory conducted a project to improve the ability of potential technology adopters to evaluate TES technologies. Major project outcomes included: development of an evaluation framework to describe key metrics, methodologies, and issues to consider when assessing the performance of TES systems integrated with packaged AC; application of multiple concepts from the evaluation framework to analyze performance data from four demonstration sites; and production of a new simulation capability that enables modeling of TES integrated with packaged AC in EnergyPlus. This report includes the evaluation framework and analysis results from the project.

  18. Japanese power electronics inverter technology and its impact on the American air conditioning industry

    SciTech Connect (OSTI)

    Ushimaru, Kenji.

    1990-08-01T23:59:59.000Z

    Since 1983, technological advances and market growth of inverter- driven variable-speed heat pumps in Japan have been dramatic. The high level of market penetration was promoted by a combination of political, economic, and trade policies in Japan. A unique environment was created in which the leading domestic industries-- microprocessor manufacturing, compressors for air conditioning and refrigerators, and power electronic devices--were able to direct the development and market success of inverter-driven heat pumps. As a result, leading US variable-speed heat pump manufacturers should expect a challenge from the Japanese producers of power devices and microprocessors. Because of the vertically-integrated production structure in Japan, in contrast to the out-sourcing culture of the United States, price competition at the component level (such as inverters, sensors, and controls) may impact the structure of the industry more severely than final product sales. 54 refs., 47 figs., 1 tab.

  19. Application of Genetic Algorithm to Optimal Design of Central Air-Conditioning Water System

    E-Print Network [OSTI]

    Feng, X.; Zou, Y.; Long, W.

    2006-01-01T23:59:59.000Z

    .25 150 121.86 0.1182 1.92 200 131.55 0.0218 376.9729 1.0864 19 19 20 4.5 150 99.58 0.1013 1.57 150 107.18 0.1013 1163.561 1.6857 20 20 21 1.8 80 22.29 0.965 1.17 65 24.28 2.3884 1408.019 1.8046 21 22 23 1 80 22.29 0.5361 1.17 80 24.24 0.5361 315.0493... Wuxi, P. R. China, 214122 Shanghai? P. R. China, 200070 fxp_99@126.com Zouyun_22@126.com WeidingLong@163.com Abstract: The optimal design of air-conditioning water system is an optimization problem of functions that depend on a series...

  20. NREL's Energy-Saving Technology for Air Conditioning Cuts Peak Power Loads Without Using Harmful Refrigerants (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-07-01T23:59:59.000Z

    This fact sheet describes how the DEVAP air conditioner was invented, explains how the technology works, and why it won an R&D 100 Award. Desiccant-enhanced evaporative (DEVAP) air-conditioning will provide superior comfort for commercial buildings in any climate at a small fraction of the electricity costs of conventional air-conditioning equipment, releasing far less carbon dioxide and cutting costly peak electrical demand by an estimated 80%. Air conditioning currently consumes about 15% of the electricity generated in the United States and is a major contributor to peak electrical demand on hot summer days, which can lead to escalating power costs, brownouts, and rolling blackouts. DEVAP employs an innovative combination of air-cooling technologies to reduce energy use by up to 81%. DEVAP also shifts most of the energy needs to thermal energy sources, reducing annual electricity use by up to 90%. In doing so, DEVAP is estimated to cut peak electrical demand by nearly 80% in all climates. Widespread use of this cooling cycle would dramatically cut peak electrical loads throughout the country, saving billions of dollars in investments and operating costs for our nation's electrical utilities. Water is already used as a refrigerant in evaporative coolers, a common and widely used energy-saving technology for arid regions. The technology cools incoming hot, dry air by evaporating water into it. The energy absorbed by the water as it evaporates, known as the latent heat of vaporization, cools the air while humidifying it. However, evaporative coolers only function when the air is dry, and they deliver humid air that can lower the comfort level for building occupants. And even many dry climates like Phoenix, Arizona, have a humid season when evaporative cooling won't work well. DEVAP extends the applicability of evaporative cooling by first using a liquid desiccant-a water-absorbing material-to dry the air. The dry air is then passed to an indirect evaporative cooling stage, in which the incoming air is in thermal contact with a moistened surface that evaporates the water into a separate air stream. As the evaporation cools the moistened surface, it draws heat from the incoming air without adding humidity to it. A number of cooling cycles have been developed that employ indirect evaporative cooling, but DEVAP achieves a superior efficiency relative to its technological siblings.

  1. Fuel Savings and Emission Reductions from Next-Generation Mobile Air Conditioning Technology in India

    SciTech Connect (OSTI)

    Chaney, L.; Thundiyil, K.; Andersen, S.; Chidambaram, S.; Abbi, Y. P.

    2007-01-01T23:59:59.000Z

    Up to 19.4% of vehicle fuel consumption in India is devoted to air conditioning (A/C). Indian A/C fuel consumption is almost four times the fuel penalty in the United States and close to six times that in the European Union because India's temperature and humidity are higher and because road congestion forces vehicles to operate inefficiently. Car A/C efficiency in India is an issue worthy of national attention considering the rate of increase of A/C penetration into the new car market, India's hot climatic conditions and high fuel costs. Car A/C systems originally posed an ozone layer depletion concern. Now that industrialized and many developing countries have moved away from ozone-depleting substances per Montreal Protocol obligations, car A/C impact on climate has captured the attention of policy makers and corporate leaders. Car A/C systems have a climate impact from potent global warming potential gas emissions and from fuel used to power the car A/Cs. This paper focuses on car A/C fuel consumption in the context of the rapidly expanding Indian car market and how new technological improvements can result in significant fuel savings and consequently, emission reductions. A 19.4% fuel penalty is associated with A/C use in the typical Indian passenger car. Car A/C fuel use and associated tailpipe emissions are strong functions of vehicle design, vehicle use, and climate conditions. Several techniques: reducing thermal load, improving vehicle design, improving occupants thermal comfort design, improving equipment, educating consumers on impacts of driver behaviour on MAC fuel use, and others - can lead to reduced A/C fuel consumption.

  2. Energy Savings and Economics of Advanced Control Strategies for Packaged Air-Conditioning Units with Gas Heat

    SciTech Connect (OSTI)

    Wang, Weimin; Katipamula, Srinivas; Huang, Yunzhi; Brambley, Michael R.

    2011-12-31T23:59:59.000Z

    Pacific Northwest National Laboratory (PNNL) with funding from the U.S. Department of Energy's Building Technologies Program (BTP) evaluated a number of control strategies that can be implemented in a controller, to improve the operational efficiency of the packaged air conditioning units. The two primary objectives of this research project are: (1) determine the magnitude of energy savings achievable by retrofitting existing packaged air conditioning units with advanced control strategies not ordinarily used for packaged units and (2) estimating what the installed cost of a replacement control with the desired features should be in various regions of the U.S. This document reports results of the study.

  3. Implementation of Smart Operation Strategies for Air-Conditioning and Lighting Systems for Ministries Complex in the State of Kuwait

    E-Print Network [OSTI]

    Al-Mulla, A.; Maheshwari, G. P.; Al-Nakib, D.; Ishaqali, H.

    The smart operation strategies were implemented for Air-Conditioning (A/C) and lighting systems to reduce the national load at Ministries Complex (MC) in the state of Kuwait. The A/C system in MC is a district cooling system that comprises of 8...

  4. 2014-06-23 Issuance: Energy Conservation Standards for Walk-in Coolers and Freezers; Air-Conditioning, Heating, & Refrigeration Institute Petition for Reconsideration

    Broader source: Energy.gov [DOE]

    This document is the agency response to the Energy Conservation Standards for Walk-in Coolers and Freezers; Air-Conditioning, Heating, & Refrigeration Institute Petition for Reconsideration.

  5. Proposal for the award of a contract for the design, supply, installation and commissioning of an HVAC (Heating, Ventilation and Air Conditioning) system for Building 3862

    E-Print Network [OSTI]

    2014-01-01T23:59:59.000Z

    Proposal for the award of a contract for the design, supply, installation and commissioning of an HVAC (Heating, Ventilation and Air Conditioning) system for Building 3862

  6. 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]

    2012-01-01T23:59:59.000Z

    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

  7. 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]

    2012-01-01T23:59:59.000Z

    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

  8. Proposal for the award of two service contracts for the operation, maintenance and other work relating to the heating, ventilation, air-conditioning and plumbing facilities at CERN

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    Proposal for the award of two service contracts for the operation, maintenance and other work relating to the heating, ventilation, air-conditioning and plumbing facilities at CERN

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

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    above, we had chosen a representative air-handling unit for the testing renovation of 2nd return air system. Cleaning area for this AHU was a capsule clean room with a hundred thousand cleanliness classes. Indoor controlled dry-bulb temperature...

  10. Numerical Analysis of the Channel Wheel Fresh Air Ventilator Under Frosting Conditions

    E-Print Network [OSTI]

    Gao, B.; Dong, Z.; Cheng, Z.; Luo, E.

    2006-01-01T23:59:59.000Z

    As new equipment, the channel wheel fresh air ventilator has become increasingly popular in recent years. However, when such equipment is operated under low ambient temperature in the freezing area in winter, the formation of frost on the outdoor...

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

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    This paper describes the situation of waste water resource in north China and the characteristics and styles of a waste water resource heat pump system, and analyzes the economic feasibility of a waste water resource heat pump air...

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

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    This paper describes the situation of waste water resource in north China and the characteristics and styles of a waste water resource heat pump system, and analyzes the economic feasibility of a waste water resource heat pump air...

  13. air-conditioned domestic buildings: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    layer, the outer layer and the air layer between them. To make the best of the solar energy, the low emissivity glass, which can reduce the harmful effect to the surroundings by...

  14. Optimization of airport terminal-area air traffic operations under uncertain weather conditions

    E-Print Network [OSTI]

    Pfeil, Diana Michalek

    2011-01-01T23:59:59.000Z

    Convective weather is responsible for large delays and widespread disruptions in the U.S. National Airspace System, especially during summer. Although Air Traffic Flow Management algorithms exist to schedule and route ...

  15. A laboratory for instruction and research in air conditioning and refrigeration

    E-Print Network [OSTI]

    Hall, Ray Allison

    1950-01-01T23:59:59.000Z

    complicated due to the combination of many simple units into elaborate assemblies. The functional relation- ship of condmnsers, compressors, cooling towersp evaporators, air distri- bution systems~ controls, snd other parts of an installation are often...

  16. Modelica Library for Building Heating, Ventilation and Air-Conditioning Systems

    E-Print Network [OSTI]

    Wetter, Michael

    2010-01-01T23:59:59.000Z

    a model with prescribed heat input into the medium, i.e. ,heat and towers. The air inlet temperature is obtained from an inputan input signal. There is also a constant effectiveness heat

  17. Air Distribution and Microenvironment Evaluation of a Desktop Task Conditioning System

    E-Print Network [OSTI]

    Zheng, G.

    2006-01-01T23:59:59.000Z

    analysis of displacement ventilation [D]. Nanjing: Nanjing University of Technology, 2004. (In Chinese) [5] Gao Xiufeng, Feng Shiyu, Yu Yongzhang, Deng Jianqiang. Experimental Study on Three-dimensional Turbulent Flow and Temperature Field in Air...

  18. Study of Air Ingress Across the Duct During the Accident Conditions

    SciTech Connect (OSTI)

    Hassan, Yassin

    2013-05-06T23:59:59.000Z

    The goal of this project is to study the fundamental physical phenoena associated with air ingress in very high temperature reactors (VHTRs). Air ingress may occur due to a nupture of primary piping and a subsequent breach in the primary pressure boundary in helium-cooled and graphite-moderated VHTRs. Significant air ingress is a concern because it introduces potential to expose the fuel, graphite support rods, and core to a risk of severe graphite oxidation. Two of the most probable air ingress scenarios involve rupture of a control rod or fuel access standpipe, and rupture in the main coolant pipe on the lower part of the reactor pressure vessel. Therefor, establishing a fundamental understanding of air ingress phenomena is critical in order to rationally evaluate safety of existing VHTRs and develop new designs that mimimize these risks. But despite this importance, progress toward development these predictive capabilities has been slowed by the complex nature of the underlaying phenomena. The combination of interdiffusion among multiple species, molecular diffusion, natural convection, and complex geometries, as well as the multiple chemical reactions involved, impose significant roadblocks to both modeling and experiment design. The project team will employ a coordinated experimental and computational effort that will help gain a deeper understanding of multiphased air ingress phenomena. THis project will enhance advanced modeling and simulation methods, enabling calculation of nuclear power plant transients and accident scenarios with a high degree of confidence. The following are the project tasks: Perform particle image velocimetry measurement of multiphase air ingresses Perform computational fluid dynamics analysis of air ingress phenomena

  19. Monitoring the Performance of a Residential Central Air Conditioner under Degraded Conditions on a Test Bench

    E-Print Network [OSTI]

    Palani, M.; O'Neal, D. L.; Haberl, J. S.

    1992-01-01T23:59:59.000Z

    enthalpies at six locations were calculated using the refrigerant property calculation program developed by Kartsounes[26]. Air-side enthalpy, humidity and specific volume were calculated by a psychrometric program developed at the Energy Systems Laboratory... procedure based on measurement of refrigerant and air side temperatures. n TABLE OF CONTENTS CHAPTER Page I INTRODUCTION 1 E LITERATURE REVIEW 3 Service and failure patterns 3 Degradation studies 4 HI MODEL DEVELOPMENT 6 Theory of operation 6 Degraded...

  20. A new route for energy efficiency diagnosis and potential analysis of energy consumption from air-conditioning system

    E-Print Network [OSTI]

    Ma,R.J.; Yu,N.Y.

    2014-01-01T23:59:59.000Z

    1 A new route for energy efficiency diagnosis and potential analysis of energy consumption from air-conditioning system Rong-Jiang Ma Nan-Yang Yu PhD candidate Professor School of Mechanical Engineering, Southwest Jiaotong... in buildings is to save energy without compromising comfort, health and productivity levels. In other words, the idea is to consume less energy while providing equal or improved building services, that is, being more energy efficient (Pérez-Lombard et al...

  1. Commercialization of air conditioning heat pump/water heater. Final technical report, Volume 3: Appendix F through I

    SciTech Connect (OSTI)

    NONE

    1996-01-30T23:59:59.000Z

    This is the final technical report on a commercialization project for an air conditioning heat pump water heater. The objective of the project was to produce a saleable system which would be economically competitive with natural gas and cost effective with regard to initial cost versus annual operating costs. The development and commercialization of the system is described. Compiled data included in numerous figures, tables and graphs.

  2. Commercialization of air conditioning heat pump/water heater. Final technical report, Volume 2: Appendix A through E

    SciTech Connect (OSTI)

    NONE

    1996-01-30T23:59:59.000Z

    This is the final technical report on a commercialization project for an air conditioning heat pump water heater. The objective of the project was to produce a saleable system which would be economically competitive with natural gas and cost effective with regard to initial cost versus annual operating costs. The development and commercialization of the system is described. Compiled data included in numerous figures, tables and graphs.

  3. Performance and evaluation of gas-engine-driven rooftop air conditioning equipment at the Willow Grove Naval Air Station. Final report (revised October 21, 1996)

    SciTech Connect (OSTI)

    Armstrong, P.R.; Katipamula, S.

    1996-10-01T23:59:59.000Z

    The performance was evaluated of a new US cooling technology that has been installed for the first time at a federal facility. The technology is a 15-ton natural gas-engine-driven rooftop air conditioning unit made by Thermo King. Two units were installed to serve the Navy Exchange at Willow Grove. The savings potential at Willow Grove is described and that in the federal sector estimated. Conditions for implementation are discussed. In summary, the new technology is generally cost-effective at sites where marginal electricity cost (per MBtu at the meter) is more than 4 times the marginal gas cost (per MBtu at the meter) and annual full-load-equivalent cooling hours exceed 2,000.

  4. Performance and evaluation of gas engine driven rooftop air conditioning equipment at the Willow Grove (PA) Naval Air Station. Interim report, 1992 cooling season

    SciTech Connect (OSTI)

    Armstrong, P.R.; Conover, D.R.

    1993-05-01T23:59:59.000Z

    In a field evaluation conducted for the US Department of Energy (DOE) Office of Federal Energy Management Program (FEMP), the Pacific Northwest Laboratory (PNL) examined the performance of a new US energy-related technology under the FEMP Test Bed Demonstration Program. The technology was a 15-ton natural gas engine driven roof top air conditioning unit. Two such units were installed on a naval retail building to provide space conditioning to the building. Under the Test Bed Demonstration Program, private and public sector interests are focused to support the installation and evaluation of new US technologies in the federal sector. Participating in this effort under a Cooperative Research and Development Agreement (CRADA) with DOE were the American Gas Cooling Center, Philadelphia Electric Company, Thermo King Corporation, and the US Naval Air Station at Willow Grove, Pennsylvania. Equipment operating and service data as well as building interior and exterior conditions were secured for the 1992 cooling season. Based on a computer assessment of the building using standard weather data, a comparison was made with the energy and operating costs associated with the previous space conditioning system. Based on performance during the 1992 cooling season and adjusted to a normal weather year, the technology will save the site $6,000/yr in purchased energy costs. An additional $9,000 in savings due to electricity demand ratchet charge reductions will also be realized. Detailed information on the technology, the installation, and the results of the technology test are provided to illustrate the advantages to the federal sector of using this technology. A history of the CRADA development process is also reported.

  5. Model Based Commissioning Tool for Air-Conditioning Distribution Systems-APCBC

    E-Print Network [OSTI]

    Yoshida, H.; Noda, T.

    2014-01-01T23:59:59.000Z

    on Building Commissioning) Sept. 2014, Beijing, China ESL-IC-14-09-06 Proceedings of the 14th International Conference for Enhanced Building Operations, Beijing, China, September 14-17, 2014 1. Issues 2. Simulation Model of Distribution System 3. Example... of VWV System 4. Example of VAV System 5. Conclusions 2 ESL-IC-14-09-06 Proceedings of the 14th International Conference for Enhanced Building Operations, Beijing, China, September 14-17, 2014 ? Energy consumption of air and water distribution in air...

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

    E-Print Network [OSTI]

    Feng, Jingjuan; Schiavon, Stefano; Bauman, Fred

    2012-01-01T23:59:59.000Z

    described in future papers. While the high peak-cooling ratecooling load can be in the range of 10-40% higher depending on the load conditions. Future

  7. Investigation of Techniques to Improve Continuous Air Monitors Under Conditions of High Dust Loading in Environmental Settings

    SciTech Connect (OSTI)

    Suilou Huang; Stephen D. Schery; John C. Rodgers

    2002-07-23T23:59:59.000Z

    A number of DOE facilities, such as the Los Alamos National Laboratory (LANL) and the Waste Isolation Pilot Plant (WIPP), use alpha-particle environmental continuous air monitors (ECAMs) to monitor air for unwanted releases of radioactive aerosols containing such materials as plutonium and uranium. High sensitivity, ease of operation, and lack of false alarms are all important for ECAMs. The object of the project was to conduct investigations to improve operation of ECAMs, particularly under conditions where a lot of nonradioactive dust may be deposited on the filters (conditions of high dust loading). The presence of such dust may increase the frequency with which filters must be changed and can lead to an increased incidence of false alarms due to deteriorated energy resolution and response specificity to the radionuclides of interest. A major finding of the investigation, not previously documented, was that under many conditions thick layers of underlying nonradioactive dust do not decrease energy resolution and specificity for target radionuclides if the radioactive aerosol arrives as a sudden thin burst deposit, as commonly occurs in the early-warning alarm mode. As a result, operators of ECAMs may not need to change filters as often as previously thought and have data upon which to base more reliable operating procedures.

  8. Direct-Expansion Air-Conditioning System Performance in Low Humidity Applications: A Case Study

    E-Print Network [OSTI]

    Khattar, M. K.; Keebaugh, D.

    1987-01-01T23:59:59.000Z

    .1 37.0 37.8 38.5 39.2 39.8 40.3 40.8 41.3 41.8 42.2 42.6 43.0 43.4 43.7 43.8 concerns with condensate freeze-up on cooling coil at air speed below 300 fpn, end saturated suction tenpcraturc below 30 F FAN PMR kU 1.2 1.4 1.6 1.8 2...

  9. Field Demonstration of a High-Efficiency Packaged Rooftop Air Conditioning Unit at Fort Gordon, Augusta, GA

    SciTech Connect (OSTI)

    Armstrong, Peter R.; Sullivan, Gregory P.; Parker, Graham B.

    2006-03-31T23:59:59.000Z

    As part of a larger program targeting the market transformation of packaged rooftop air conditioning, five high-efficiency rooftop air conditioning products were selected in 2002 by the U.S. Department of Energy (DOE) under the Unitary Air Conditioner (UAC) Technology Procurement (http://www.pnl.gov/uac). In February 2003, Fort Gordon in Augusta, Georgia was chosen as the demonstration site. With the goal of validating the field performance and operation of one of the awarded products, a 10-ton high-efficiency packaged rooftop unit (RTU) manufactured by Global Energy Group (GEG) was installed at Fort Gordon in October 2003. Following equipment installation, power metering, air- and refrigerant-side instrumentation was installed on the GEG RTU and a 4-year old typical-efficiency 20-ton RTU manufactured by AAON . The GEG and AAON units were instrumented identically and operated May through July, 2005, to observe performance under a range of conditions. Based on the data collected as part of this demonstration, the GEG equipment performed at least 8% better in stage-1 (single compressor running) cooling and at least 16% better in stage-2 (both compressors running) than the baseline AAON equipment. Performance comparisons are based on what we call application EER normalized to equivalent specific fan power. The full-load, specific-fan-power-normalized application EERs at ARI design conditions were 10.48 Btu/Wh for the GEG and 9.00 Btu/Wh for the baseline machine. With a cost premium of nearly 50%, and slightly higher maintenance costs, the life-cycle cost analysis shows that the GEG technology pays for itself--a positive net-present value (NPV)--only in climates and buildings with long cooling seasons. Manufacture of this equipment on a larger scale can be expected to reduce costs to the point where it is more broadly cost-effective. The assumed 10-ton baseline and new-technology unit costs are $3824.00 and $5525.00 respectively. If the new technology cost is assumed to drop as sales increase to $4674.50 for a 10-ton unit (i.e. the original cost difference is halved), the life-cycle costs improve. A grid of first cost, annual maintenance cost and electricity price is enumerated and the results presented in the report show the sensitivity of life cycle cost to these three financial parameters in each of eight different climates.

  10. "Table HC3.7 Air-Conditioning Usage Indicators by Owner-Occupied Housing Unit, 2005"

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTownDells,1 U.S. Department of Energygasoline4 Space2.9 Home7 Air-Conditioning Usage

  11. 23.11.2014bo Akademi Univ -Thermal and Flow Engineering Piispankatu 8, 20500 Turku 1/36 7. Air conditioning, cooling towers

    E-Print Network [OSTI]

    Zevenhoven, Ron

    23.11.2014Åbo Akademi Univ - Thermal and Flow Engineering Piispankatu 8, 20500 Turku 1/36 7. Air conditioning, cooling towers Ron Zevenhoven Åbo Akademi University Thermal and Flow Engineering Laboratory Engineering Piispankatu 8, 20500 Turku 2/36 7.1 Humid air #12;23.11.2014 Åbo Akademi Univ - Thermal and Flow

  12. The Technical and Economical Analysis of a Centralized Air-Conditioning System with Cold Storage Refrigeration in High-Rise Residential Buildings

    E-Print Network [OSTI]

    Xiang, C.; Xie, G.

    2006-01-01T23:59:59.000Z

    In recent years, the application of a centralized air-conditioning system (CACS) with cold storage refrigeration in high-rise residential buildings has gradually increased. Due to the large difference between civil residential buildings...

  13. Heating, Ventilation, and Air Conditioning Design Strategy for a Hot-Humid Production Builder

    SciTech Connect (OSTI)

    Kerrigan, P.

    2014-03-01T23:59:59.000Z

    BSC worked directly with the David Weekley Homes - Houston division to redesign three floor plans in order to locate the HVAC system in conditioned space. The purpose of this project is to develop a cost effective design for moving the HVAC system into conditioned space. In addition, BSC conducted energy analysis to calculate the most economical strategy for increasing the energy performance of future production houses. This is in preparation for the upcoming code changes in 2015. The builder wishes to develop an upgrade package that will allow for a seamless transition to the new code mandate. The following research questions were addressed by this research project: 1. What is the most cost effective, best performing and most easily replicable method of locating ducts inside conditioned space for a hot-humid production home builder that constructs one and two story single family detached residences? 2. What is a cost effective and practical method of achieving 50% source energy savings vs. the 2006 International Energy Conservation Code for a hot-humid production builder? 3. How accurate are the pre-construction whole house cost estimates compared to confirmed post construction actual cost? BSC and the builder developed a duct design strategy that employs a system of dropped ceilings and attic coffers for moving the ductwork from the vented attic to conditioned space. The furnace has been moved to either a mechanical closet in the conditioned living space or a coffered space in the attic.

  14. Impact of Charge Degradation on the Life Cycle Climate Performance of a Residential Air-Conditioning System

    SciTech Connect (OSTI)

    Beshr, Mohamed [University of Maryland, College Park; Aute, Vikrant [University of Maryland, College Park; Abdelaziz, Omar [ORNL; Fricke, Brian A [ORNL; Radermacher, Reinhard [University of Maryland, College Park

    2014-01-01T23:59:59.000Z

    Vapor compression systems continuously leak a small fraction of their refrigerant charge to the environment, whether during operation or servicing. As a result of the slow leak rate occurring during operation, the refrigerant charge decreases until the system is serviced and recharged. This charge degradation, after a certain limit, begins to have a detrimental effect on system capacity, energy consumption, and coefficient of performance (COP). This paper presents a literature review and a summary of previous experimental work on the effect of undercharging or charge degradation of different vapor compression systems, especially those without a receiver. These systems include residential air conditioning and heat pump systems utilizing different components and refrigerants, and water chiller systems. Most of these studies show similar trends for the effect of charge degradation on system performance. However, it is found that although much experimental work exists on the effect of charge degradation on system performance, no correlation or comparison between charge degradation and system performance yet exists. Thus, based on the literature review, three different correlations that characterize the effect of charge on system capacity and energy consumption are developed for different systems as follows: one for air-conditioning systems, one for vapor compression water-to-water chiller systems, and one for heat pumps. These correlations can be implemented in vapor compression cycle simulation tools to obtain a better prediction of the system performance throughout its lifetime. In this paper, these correlations are implemented in an open source tool for life cycle climate performance (LCCP) based design of vapor compression systems. The LCCP of a residential air-source heat pump is evaluated using the tool and the effect of charge degradation on the results is studied. The heat pump is simulated using a validated component-based vapor compression system model and the LCCP results obtained using the three charge degradation correlations are compared.

  15. A Study to Determine the Energy Impact of Adding Polarshield to Air Conditioning Systems

    E-Print Network [OSTI]

    Cromer, C. J.

    2001-01-01T23:59:59.000Z

    unit operating under typical hot outdoor conditions (95 degrees F). The test was operated in a “before” - “after” manner with each before-after segment operated for twelve days and three tests were conducted - one on a new 2.5 ton system where 1.25 oz...

  16. 2416, Page 1 International Refrigeration and Air Conditioning Conference at Purdue, July 12-15, 2010

    E-Print Network [OSTI]

    evaporators defrost more often than fin-and-tube heat pump units, operating under similar conditions understanding of the heat and mass transfer characteristics of coils during frosting and defrosting transient-15, 2010 Experimental Investigation of Frost Growth on Microchannel Heat Exchangers Ehsan Moallem1

  17. Parameter Estimation of Dynamic Air-conditioning Component Models Using Limited Sensor Data

    E-Print Network [OSTI]

    Hariharan, Natarajkumar

    2011-08-08T23:59:59.000Z

    .1). ?? , is the area of orifice opening and ?? is the coefficient of discharge of the expansion valve at that specific condition. Coefficient of discharge is a dependent on the EEV geometry and the thermal?fluid properties of the refrigerant flowing through... Area of application of bulb pressure ?2 Area of application of evaporator pressure ?? External surface area of the TEV bulb ??? Area of heat conduction between the refrigerant and the bulb ?? Area of opening for refrigerant flow in expansion...

  18. DEST Software to Analyze System Zoning and Energy Consumption in Air Conditioning Systems

    E-Print Network [OSTI]

    Fan, Y.; Li, D.

    2006-01-01T23:59:59.000Z

    ) Depth 6m, glass curtain wall, Beijing; 2) Depth 6m, window-wall ratio 0.5, Beijing; ICEBO2006, Shenzhen, China HVAC Technologies for Energy Efficiency, Vol. IV-8-2 3) Depth 8m, window-wall ratio 0.5, Harbin; 4) Depth 8m... cases were studied: 1) depth: 6m, glass curtain wall, Beijing; 2) depth: 6m, window-wall ratio 0.5, Beijing. The results were showed in Fig.3 and Fig.4. Different building envelopes condition impacted inner zone load little and distribution of inner...

  19. Experimental and kinetic study of autoignition in methane/ethane/air and methane/propane/air mixtures under engine-relevant conditions

    SciTech Connect (OSTI)

    Huang, J.; Bushe, W.K. [Department of Mechanical Engineering, University of British Columbia, 6950 Applied Science Lane, Vancouver, British Columbia (Canada V6T 1Z4)

    2006-01-01T23:59:59.000Z

    The ignition delay of homogeneous methane/air mixtures enriched with small fractions of ethane/propane was measured using the reflected-shock technique at temperatures from 900 to 1400 K and pressures from 16 to 40 bar. The results show complex effects of ethane/propane on the ignition of methane, but a common trend observed with both hydrocarbons is an increased promotion effect for temperatures below 1100 K. A detailed kinetic mechanism was used to investigate the interaction between ethane/propane and the ignition chemistry of methane under the above conditions. It was found that at relatively low temperatures, the reactions between ethane/propane and methylperoxy (CH{sub 3}O{sub 2}) lead to an enhanced rate of formation of OH radicals in the initiation phase of the ignition. By systematically applying the quasi-steady-state assumptions to the intermediate species involved in the main reaction path identified, we have achieved an analytical description of the ignition process in the transitional temperature regime. The analytical solutions agree reasonably well with the detailed kinetic model and the experimental results for both ignition delay and concentrations of major intermediate species.

  20. Development of an Online Expert Rule Based Automated fault Detection and Diagnostic (AFDD) Tool for Air Handling Units: Beta Test Results

    E-Print Network [OSTI]

    Bruton, K.; Coakley, D.; O'Donovan, P.; Keane, M.; O'Sullivan, D.

    2013-01-01T23:59:59.000Z

    Heating Ventilation and Air Conditioning (HVAC) system energy consumption accounts for an average of 40% of an industrial sites energy consumption. Studies have indicated that 20 - 30% energy savings are achievable by recommissioning Air Handling...

  1. Solutions for Summer Electric Power Shortages: Demand Response and its Applications in Air Conditioning and Refrigerating Systems

    E-Print Network [OSTI]

    Han, Junqiao; Piette, Mary Ann

    2008-01-01T23:59:59.000Z

    for DR and demand side management, along with operationalresponse), DSM (demand side management), DR strategy, air

  2. Drag coefficient for the air-sea exchange in hurricane conditions

    E-Print Network [OSTI]

    Golbraikh, E

    2013-01-01T23:59:59.000Z

    The physical model is proposed for prediction of the non-monotonic drag coefficient variation with the neutral stability 10-m wind speed, U10. The model is based upon measurements of the foam coverage fraction and characteristic size of foam bubbles with U10, and on the drag coefficient approximation by the linearly weighted averaging over alternating foam-free and foam-covered portions of the ocean surface. The obtained drag coefficient is in fair agreement with that obtained by field measurements of the vertical variation of mean wind speed in Powell et al. (Nature, 2003) which discover reduction of the sea-surface drag with U10 rising to hurricane conditions.

  3. Influences of atmospheric conditions and air mass on the ratio of ultraviolet to total solar radiation

    SciTech Connect (OSTI)

    Riordan, C.J.; Hulstrom, R.L.; Myers, D.R.

    1990-08-01T23:59:59.000Z

    The technology to detoxify hazardous wastes using ultraviolet (UV) solar radiation is being investigated by the DOE/SERI Solar Thermal Technology Program. One of the elements of the technology evaluation is the assessment and characterization of UV solar radiation resources available for detoxification processes. This report describes the major atmospheric variables that determine the amount of UV solar radiation at the earth's surface, and how the ratio of UV-to-total solar radiation varies with atmospheric conditions. These ratios are calculated from broadband and spectral solar radiation measurements acquired at SERI, and obtained from the literature on modeled and measured UV solar radiation. The following sections discuss the atmospheric effects on UV solar radiation and provide UV-to-total solar radiation ratios from published studies, as well as measured values from SERI's data. A summary and conclusions are also given.

  4. Advanced control strategies for heating, ventilation, air-conditioning, and refrigeration systems—An overview: Part I: Hard control

    SciTech Connect (OSTI)

    D. Subbaram Naidu; Craig G. Rieger

    2011-02-01T23:59:59.000Z

    A chronological overview of the advanced control strategies for heating, ventilation, air-conditioning, and refrigeration (HVAC&R) is presented in this article. 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 on the fusion or hybrid of hard- and soft-control techniques. Thus, it is to be noted that the terminology “hard” and “soft” computing/control has nothing to do with the “hardware” and “software” that is being generally used. Part I of a two-part series focuses on hard-control strategies, and Part II focuses on softand fusion-control in addition to some future directions in HVAC&R research. This overview is not intended to be an exhaustive survey on this topic, and any omission of other works is purely unintentional.

  5. Experimental Study in Energy Performance of Temperature and Humidity Independent Control System with Multiple Split Air-Conditioning System

    E-Print Network [OSTI]

    Kawano,M.

    2014-01-01T23:59:59.000Z

    to realizing Zero Energy Buildings (ZEB). 61% ?F ?F The amount of solar power Performance improvement of a building ? 30% reduction Efficiency of the air conditioning system ? 60? reduction 60% over reduction E le ct ri c P o w e r C o n su m p ti o n (K W h...-09-16 Proceedings of the 14th International Conference for Enhanced Building Operations, Beijing, China, September 14-17, 2014 80 0.1 0.2 0.3 0.4 0.5 0.6 1? 4? 1? 11 ? 1? 16 ? 1? 17 ? 1? 18 ? 1? 21 ? 1? 22 ? 1? 30 ? 1? 31 ? 2? 1? 2? 4? 2? 5? 2? 6? 2? 7? 2? 8? 2? 12...

  6. High Efficiency Integrated Space Conditioning, Water Heating and Air Distribution System for HUD-Code Manufactured Housing

    SciTech Connect (OSTI)

    Henry DeLima; Joe Akin; Joseph Pietsch

    2008-09-14T23:59:59.000Z

    Recognizing the need for new space conditioning and water heating systems for manufactured housing, DeLima Associates assembled a team to develop a space conditioning system that would enhance comfort conditions while also reducing energy usage at the systems level. The product, Comboflair® was defined as a result of a needs analysis of project sponsors and industry stakeholders. An integrated system would be developed that would combine a packaged airconditioning system with a small-duct, high-velocity air distribution system. In its basic configuration, the source for space heating would be a gas water heater. The complete system would be installed at the manufactured home factory and would require no site installation work at the homesite as is now required with conventional split-system air conditioners. Several prototypes were fabricated and tested before a field test unit was completed in October 2005. The Comboflair® system, complete with ductwork, was installed in a 1,984 square feet, double-wide manufactured home built by Palm Harbor Homes in Austin, TX. After the home was transported and installed at a Palm Harbor dealer lot in Austin, TX, a data acquisition system was installed for remote data collection. Over 60 parameters were continuously monitored and measurements were transmitted to a remote site every 15 minutes for performance analysis. The Comboflair® system was field tested from February 2006 until April 2007. The cooling system performed in accordance with the design specifications. The heating system initially could not provide the needed capacity at peak heating conditions until the water heater was replaced with a higher capacity standard water heater. All system comfort goals were then met. As a result of field testing, we have identified improvements to be made to specific components for incorporation into production models. The Comboflair® system will be manufactured by Unico, Inc. at their new production facility in St. Louis, MO. The product will be initially launched in the hot-humid climates of the southern U.S.

  7. TESTING OF AIR-FLOW WINDOWS FOR EVALUATION AND APPLICATION

    E-Print Network [OSTI]

    Boehm, R.F.

    2014-01-01T23:59:59.000Z

    PRESSURE: TAPS RETURN** REFERENCE** Return-Air ConditioningMakeup-Air Conditioning Energy a.Through Glass Return-Air Conditioning Energy Makeuo-Air

  8. Analysis and experimental study on formation conditions of large-scale barrier-free diffuse atmospheric pressure air plasmas in repetitive pulse mode

    SciTech Connect (OSTI)

    Li, Lee, E-mail: leeli@mail.hust.edu.cn; Liu, Lun; Liu, Yun-Long; Bin, Yu; Ge, Ya-Feng; Lin, Fo-Chang [State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electric and Electronic Engineering, HuaZhong University of Science and Technology (HUST), Wuhan 430074 (China)

    2014-01-14T23:59:59.000Z

    Atmospheric air diffuse plasmas have enormous application potential in various fields of science and technology. Without dielectric barrier, generating large-scale air diffuse plasmas is always a challenging issue. This paper discusses and analyses the formation mechanism of cold homogenous plasma. It is proposed that generating stable diffuse atmospheric plasmas in open air should meet the three conditions: high transient power with low average power, excitation in low average E-field with locally high E-field region, and multiple overlapping electron avalanches. Accordingly, an experimental configuration of generating large-scale barrier-free diffuse air plasmas is designed. Based on runaway electron theory, a low duty-ratio, high voltage repetitive nanosecond pulse generator is chosen as a discharge excitation source. Using the wire-electrodes with small curvature radius, the gaps with highly non-uniform E-field are structured. Experimental results show that the volume-scaleable, barrier-free, homogeneous air non-thermal plasmas have been obtained between the gap spacing with the copper-wire electrodes. The area of air cold plasmas has been up to hundreds of square centimeters. The proposed formation conditions of large-scale barrier-free diffuse air plasmas are proved to be reasonable and feasible.

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

    SciTech Connect (OSTI)

    Starmack, G.J.

    1990-09-01T23:59:59.000Z

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

  10. Impact of Solar Control PVB Glass on Vehicle Interior Temperatures, Air-Conditioning Capacity, Fuel Consumption, and Vehicle Range

    SciTech Connect (OSTI)

    Rugh, J.; Chaney, L.; Venson, T.; Ramroth, L.; Rose, M.

    2013-04-01T23:59:59.000Z

    The objective of the study was to assess the impact of Saflex1 S-series Solar Control PVB (polyvinyl butyral) configurations on conventional vehicle fuel economy and electric vehicle (EV) range. The approach included outdoor vehicle thermal soak testing, RadTherm cool-down analysis, and vehicle simulations. Thermal soak tests were conducted at the National Renewable Energy Laboratory's Vehicle Testing and Integration Facility in Golden, Colorado. The test results quantified interior temperature reductions and were used to generate initial conditions for the RadTherm cool-down analysis. The RadTherm model determined the potential reduction in air-conditioning (A/C) capacity, which was used to calculate the A/C load for the vehicle simulations. The vehicle simulation tool identified the potential reduction in fuel consumption or improvement in EV range between a baseline and modified configurations for the city and highway drive cycles. The thermal analysis determined a potential 4.0% reduction in A/C power for the Saflex Solar PVB solar control configuration. The reduction in A/C power improved the vehicle range of EVs and fuel economy of conventional vehicles and plug-in hybrid electric vehicles.

  11. Using Acid Number as a Leading Indicator of Refrigeration and Air Conditioning System Performance

    SciTech Connect (OSTI)

    Dennis Cartlidge; Hans Schellhase

    2003-07-31T23:59:59.000Z

    This report summarizes a literature review to assess the acidity characteristics of the older mineral oil and newer polyolester (POE) refrigeration systems as well as to evaluate acid measuring techniques used in other non-aqueous systems which may be applicable for refrigeration systems. Failure in the older chlorofluorocarbon/hydrochlorofluorocarbon (CFC/HCFC) / mineral oil systems was primarily due to thermal degradation of the refrigerant which resulted in the formation of hydrochloric and hydrofluoric acids. These are strong mineral acids, which can, over time, severely corrode the system metals and lead to the formation of copper plating on iron surfaces. The oil lubricants used in the older systems were relatively stable and were not prone to hydrolytic degradation due to the low solubility of water in oil. The refrigerants in the newer hydrofluorocarbon (HFC)/POE systems are much more thermally stable than the older CFC/HCFC refrigerants and mineral acid formation is negligible. However, acidity is produced in the new systems by hydrolytic decomposition of the POE lubricants with water to produce the parent organic acids and alcohols used to prepare the POE. The individual acids can therefore vary but they are generally C5 to C9 carboxylic acids. Organic acids are much weaker and far less corrosive to metals than the mineral acids from the older systems but they can, over long time periods, react with metals to form carboxylic metal salts. The salts tend to accumulate in narrow areas such as capillary tubes, particularly if residual hydrocarbon processing chemicals are present in the system, which can lead to plugging. The rate of acid production from POEs varies on a number of factors including chemical structure, moisture levels, temperature, acid concentration and metals. The hydrolysis rate of reaction can be reduced by using driers to reduce the free water concentration and by using scavenging chemicals which react with the system acids. Total acid number (TAN), which includes both mineral acids and organic acids, is therefore a useful indicator which can be used to monitor the condition of the system in order to perform remedial maintenance, when required, to prevent system failure. The critical TAN value is the acid level at which remedial action should be taken to prevent the onset of rapid acid formation which can result in system failure. The level of 0.05 mg KOH/g of oil was established for CFC/mineral oil systems based on analysis of 700 used lubricants from operating systems and failed units. There is no consensus within the refrigeration industry as to the critical TAN value for HFC/POE systems, however, the value will be higher than the CFC/mineral oil systems critical TAN value because of the much weaker organic acids produced from POE. A similar study of used POE lubricants should be performed to establish a critical TAN limit for POE systems. Titrimetric analysis per ASTM procedures is the most commonly used method to determine TAN values in lubricants in the refrigeration industry and other industries dealing with lubricating oils. For field measurements, acid test kits are often used since they provide rapid, semi-quantitative TAN results.

  12. Energy Performance Evaluation and Development of Control Strategies for the Air-conditioning System of a Building at Construction Stage

    E-Print Network [OSTI]

    Wang, S.; Xu, X.; Ma, Z.

    2006-01-01T23:59:59.000Z

    . These control strategies mainly involve optimal chiller sequencing control, cooling tower sequencing control, optimal water pressure differential set-point control, AHU supply air static pressure reset control and DCV-based fresh air control, etc. To assess...

  13. FIELD EVALUATION OF IMPROVED METHODS FOR MEASURING THE AIR LEAKAGE OF DUCT SYSTEMS UNDER NORMAL OPERATING CONDITIONS IN 51 HOMES

    SciTech Connect (OSTI)

    Paul W. Francisco; Larry Palmiter; Erin Kruse; Bob Davis

    2003-10-18T23:59:59.000Z

    Duct leakage in forced-air distribution systems has been recognized for years as a major source of energy losses in residential buildings. Unfortunately, the distribution of leakage across homes is far from uniform, and measuring duct leakage under normal operating conditions has proven to be difficult. Recently, two new methods for estimating duct leakage at normal operating conditions have been devised. These are called the nulling test and the Delta-Q test. Small exploratory studies have been done to evaluate these tests, but previously no large-scale study on a broad variety of homes has been performed to determine the accuracy of these new methods in the field against an independent benchmark of leakage. This sort of study is important because it is difficult in a laboratory setting to replicate the range of leakage types found in real homes. This report presents the results of a study on 51 homes to evaluate these new methods relative to an independent benchmark and a method that is currently used. An evaluation of the benchmark procedure found that it worked very well for supply-side leakage measurements, but not as well on the return side. The nulling test was found to perform well, as long as wind effects were minimal. Unfortunately, the time and difficulty of setup can be prohibitive, and it is likely that this method will not be practical for general use by contractors except in homes with no return ducts. The Delta-Q test was found to have a bias resulting in overprediction of the leakage, which qualitatively confirms the results of previous laboratory, simulation, and small-scale field studies. On average the bias was only a few percent of the air handler flow, but in about 20% of the homes the bias was large. A primary flaw with the Delta-Q test is the assumption that the pressure between the ducts and the house remain constant during the test, as this assumption does not hold true. Various modifications to the Delta-Q method were evaluated as possible improvements. Only one of these modifications provided improved results. This modification requires measuring the duct pressure relative to the house at either every pressure station within the Delta-Q test or at the extremes of the house pressure range involved in the Delta-Q test. If the pressures are only measured at the extremes, then calculated pressures at the other pressure stations are obtained via interpolation. Using these pressures reduced the bias in the Delta-Q test by about one-third.

  14. Distribution of small dispersive coal dust particles and absorbed radioactive chemical elements in conditions of forced acoustic resonance in iodine air filter at nuclear power plant

    E-Print Network [OSTI]

    Ledenyov, Oleg P

    2013-01-01T23:59:59.000Z

    The physical features of distribution of the small dispersive coal dust particles and the adsorbed radioactive chemical elements and their isotopes in the absorber with the granular filtering medium with the cylindrical coal granules were researched in the case of the intensive air dust aerosol stream flow through the iodine air filter (IAF). It was shown that, at the certain aerodynamic conditions in the IAF, the generation of the acoustic oscillations is possible. It was found that the acoustic oscillations generation results in an appearance of the standing acoustic waves of the air pressure (density) in the IAF. In the case of the intensive blow of the air dust aerosol, it was demonstrated that the standing acoustic waves have some strong influences on both: 1) the dynamics of small dispersive coal dust particles movement and their accumulation in the IAF; 2) the oversaturation of the cylindrical coal granules by the adsorbed radioactive chemical elements and their isotopes in the regions, where the antin...

  15. Deemed Savings Estimates for Legacy Air Conditioning and WaterHeating Direct Load Control Programs in PJM Region

    SciTech Connect (OSTI)

    Goldman, Charles

    2007-03-01T23:59:59.000Z

    During 2005 and 2006, the PJM Interconnection (PJM) Load Analysis Subcommittee (LAS) examined ways to reduce the costs and improve the effectiveness of its existing measurement and verification (M&V) protocols for Direct Load Control (DLC) programs. The current M&V protocol requires that a PURPA-compliant Load Research study be conducted every five years for each Load-Serving Entity (LSE). The current M&V protocol is expensive to implement and administer particularly for mature load control programs, some of which are marginally cost-effective. There was growing evidence that some LSEs were mothballing or dropping their DLC programs in lieu of incurring the expense associated with the M&V. This project had several objectives: (1) examine the potential for developing deemed savings estimates acceptable to PJM for legacy air conditioning and water heating DLC programs, and (2) explore the development of a collaborative, regional, consensus-based approach for conducting monitoring and verification of load reductions for emerging load management technologies for customers that do not have interval metering capability.

  16. air temperature air: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    air temperatures... conditions. The design of this study was based on the relation- ship of four parameters: air temperature, air velocity, radiant heat, and globe...

  17. Account Specialist

    Broader source: Energy.gov [DOE]

    A successful candidate in this position will serve as an Account Specialist responsible for executing Long Term (LT) surplus sales greater than 18 months, including energy, capacity, reserves...

  18. Speciation and Fate of Trace Metals in Estuarine Sediments Under Reduced and Oxidized Conditions, Seaplane Lagoon, Alameda Naval Air Station

    SciTech Connect (OSTI)

    Carroll, S A; Day, P A; Esser, B; Randall, S

    2002-10-18T23:59:59.000Z

    We have identified important chemical reactions that control the fate of metal-contaminated estuarine sediments if they are left undisturbed (in situ) or if they are dredged. We combined information on the molecular bonding of metals in solids from X-ray absorption spectroscopy (XAS) with thermodynamic and kinetic driving forces obtained from dissolved metal concentrations to deduce the dominant reactions under reduced and oxidized conditions. We evaluated the in situ geochemistry of metals (cadmium, chromium, iron, lead, manganese and zinc) as a function of sediment depth (to 100 cm) from a 60-year record of contamination at the Alameda Naval Air Station, California. Results from XAS and thermodynamic modeling of porewaters show that cadmium and most of the zinc form stable sulfide phases, and that lead and chromium are associated with stable carbonate, phosphate, phyllosilicate, or oxide minerals. Therefore, there is minimal risk associated with the release of these trace metals from the deeper sediments contaminated prior to the Clean Water Act (1975) as long as reducing conditions are maintained. Increased concentrations of dissolved metals with depth were indicative of the formation of metal HS- complexes. The sediments also contain zinc, chromium, and manganese associated with detrital iron-rich phyllosilicates and/or oxides. These phases are recalcitrant at near-neutral pH and do not undergo reductive dissolution within the 60-year depositional history of sediments at this site. The fate of these metals during dredging was evaluated by comparing in situ geochemistry with that of sediments oxidized by seawater in laboratory experiments. Cadmium and zinc pose the greatest hazard from dredging because their sulfides were highly reactive in seawater. However, their dissolved concentrations under oxic conditions were limited eventually by sorption to or co-precipitation with an iron (oxy)hydroxide. About 50% of the reacted CdS and 80% of the reacted ZnS were bonded to an oxide-substrate at the end of the 90-day oxidation experiment. Lead and chromium pose a minimal hazard from dredging because they are bonded to relatively insoluble carbonate, phosphate, phyllosilicate, or oxide minerals that are stable in seawater. These results point out the specific chemical behavior of individual metals in estuarine sediments, and the need for direct confirmation of metal speciation in order to constrain predictive models that realistically assess the fate of metals in urban harbors and coastal sediments.

  19. 2014-11-25 Issuance: Energy Conservation Standards for Small, Large, and Very Large Air-cooled Commercial Package Air Conditioning and Heating Equipment; Extension of Public Comment Period

    Broader source: Energy.gov [DOE]

    This document is a pre-publication Federal Register extension of the public comment period regarding energy conservation standards for small, large and very large air-cool commercial package air conditioning and heating equipment, as issued by the Deputy Assistant Secretary for Energy Efficiency on November 25, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

  20. Future Air Conditioning Energy Consumption in Developing Countriesand what can be done about it: The Potential of Efficiency in theResidential Sector

    SciTech Connect (OSTI)

    McNeil, Michael A.; Letschert, Virginie E.

    2007-05-01T23:59:59.000Z

    The dynamics of air conditioning are of particular interestto energy analysts, both because of the high energy consumption of thisproduct, but also its disproportionate impact on peak load. This paperaddresses the special role of this end use as a driver of residentialelectricity consumption in rapidly developing economies. Recent historyhas shown that air conditioner ownership can grow grows more rapidly thaneconomic growth in warm-climate countries. In 1990, less than a percentof urban Chinese households owned an air conditioner; by 2003 this numberrose to 62 percent. The evidence suggests a similar explosion of airconditioner use in many other countries is not far behind. Room airconditioner purchases in India are currently growing at 20 percent peryear, with about half of these purchases attributed to the residentialsector. This paper draws on two distinct methodological elements toassess future residential air conditioner 'business as usual' electricityconsumption by country/region and to consider specific alternative 'highefficiency' scenarios. The first component is an econometric ownershipand use model based on household income, climate and demographicparameters. The second combines ownership forecasts and stock accountingwith geographically specific efficiency scenarios within a uniqueanalysis framework (BUENAS) developed by LBNL. The efficiency scenariomodule considers current efficiency baselines, available technologies,and achievable timelines for development of market transformationprograms, such as minimum efficiency performance standards (MEPS) andlabeling programs. The result is a detailed set of consumption andemissions scenarios for residential air conditioning.

  1. Accountability report - fiscal year 1997

    SciTech Connect (OSTI)

    NONE

    1998-04-01T23:59:59.000Z

    This document contains the US NRC`s accountability report for fiscal year 1997. Topics include uses of funds, financial condition, program performance, management accountability, and the audited financial statement.

  2. Commissioning Tools for Heating/Cooling System in Residence - Verification of Floor Heating System and Room Air Conditioning System Performance 

    E-Print Network [OSTI]

    Miura, H.; Hokoi, S.; Iwamae, A.; Umeno, T.; Kondo, S.

    2004-01-01T23:59:59.000Z

    Tools of evaluating the performance of floor heating and room air conditioner are examined as a commissioning tool. Simple method is needed to check these performance while in use by residents, because evaluation currently requires significant time...

  3. Comfort, perceived air quality, and work performance in a low-power task-ambient conditioning system

    E-Print Network [OSTI]

    Zhang, Hui Ph.D; Kim, DongEun; Arens, Edward A; Buchberger, Elena; Bauman, Fred; Huizenga, Charlie

    2008-01-01T23:59:59.000Z

    way that when the spot cooling supply fan is on, it deliversnozzle. When the spot cooling supply fan is off, the localducted supply of cool air (called the spot cooling line) to

  4. Energy Consumption Simulation and Analysis of Heat Pump Air Conditioning System in Wuhan by the BIN Method 

    E-Print Network [OSTI]

    Wen, Y.; Zhao, F.

    2006-01-01T23:59:59.000Z

    to simulate the annual energy consumption of groundwater heat pump systems (GWHPS) for an office building in Wuhan. Its annual energy consumption was obtained and compared with the partner of the air source heat pump systems (ASHPS). The results show...

  5. Energy Consumption Simulation and Analysis of Heat Pump Air Conditioning System in Wuhan by the BIN Method

    E-Print Network [OSTI]

    Wen, Y.; Zhao, F.

    2006-01-01T23:59:59.000Z

    to simulate the annual energy consumption of groundwater heat pump systems (GWHPS) for an office building in Wuhan. Its annual energy consumption was obtained and compared with the partner of the air source heat pump systems (ASHPS). The results show...

  6. Commissioning Tools for Heating/Cooling System in Residence - Verification of Floor Heating System and Room Air Conditioning System Performance

    E-Print Network [OSTI]

    Miura, H.; Hokoi, S.; Iwamae, A.; Umeno, T.; Kondo, S.

    2004-01-01T23:59:59.000Z

    Tools of evaluating the performance of floor heating and room air conditioner are examined as a commissioning tool. Simple method is needed to check these performance while in use by residents, because evaluation currently requires significant time...

  7. Proposal for the award of a contract for the supply and installation of an air-conditioning system for the CERN Computer Centre

    E-Print Network [OSTI]

    2005-01-01T23:59:59.000Z

    This document concerns the award of a contract for the supply and installation of an air-conditioning system for the CERN Computer Centre. The Finance Committee is invited to agree to the negotiation of a contract with INIZIATIVE INDUSTRIALI (IT), the lowest bidder, for the supply and installation of an air-conditioning system for the CERN Computer Centre for a total amount of 2 375 280 euros (3 654 277 Swiss francs) not subject to revision, with options for additional chillers, chilled water coils and sound attenuation, for an additional amount of 539 053 euros (829 312 Swiss francs), bringing the total amount to 2 914 333 euros (4 483 589 Swiss francs), not subject to revision. The rate of exchange used is that stipulated in the tender.

  8. The design, construction, and instrumentation of a chamber to study heat, mass, and momentum transfer from humid air to metal under conditions of frosting and free convection

    E-Print Network [OSTI]

    Hutchison, James P

    1961-01-01T23:59:59.000Z

    THE DESIGN? CONSTRUCTION? AND INSTRUMENTATION OF A CEAMSER TO STUDY HEAT, MASS? AND MOSNTUM TRANSFER FROM HUMID AIR TO METAL UNDER CONDITIONS OF FROSTING AND FREE CONVECTION A Thesis By James P. Hutchison Submitted to the Graduate School... temperatures a cryogenic pump wss necessary. The sire of the pump was computed on the basis of maintaining a one degree Fahrenheit drop of the coolant temperature through the supply systms. The greatest heat load on the supply system being 3718 BTU per hour...

  9. The Coordinated Control of a Central Air Conditioning System Based on Variable Chilled Water Temperature and Variable Chilled Water Flow 

    E-Print Network [OSTI]

    Liu, J.; Mai, Y.; Liu, X.

    2006-01-01T23:59:59.000Z

    energy consumption of chiller and chiller water pump was taken as the objective function of the optimization model. The performance characteristics of a chiller, water pump, regulation valve and pipeline are taken into account, and the optimization...

  10. The Coordinated Control of a Central Air Conditioning System Based on Variable Chilled Water Temperature and Variable Chilled Water Flow

    E-Print Network [OSTI]

    Liu, J.; Mai, Y.; Liu, X.

    2006-01-01T23:59:59.000Z

    energy consumption of chiller and chiller water pump was taken as the objective function of the optimization model. The performance characteristics of a chiller, water pump, regulation valve and pipeline are taken into account, and the optimization...

  11. Ambient Operation of Li/Air Batteries

    SciTech Connect (OSTI)

    Zhang, Jiguang; Wang, Deyu; Xu, Wu; Xiao, Jie; Williford, Ralph E.

    2010-07-01T23:59:59.000Z

    In this work, Li/air batteries based on nonaqueous electrolytes were investigated in ambient conditions (with an oxygen partial pressure of 0.21 atm and relative humidity of ~20%). A heat-sealable polymer membrane was used as both an oxygen-diffusion membrane and as a moisture barrier for Li/air batteries. The membrane also can minimize the evaporation of the electrolyte from the batteries. Li/air batteries with this membrane can operate in ambient conditions for more than one month with a specific energy of 362 Wh kg-1, based on the total weight of the battery including its packaging. Among various carbon sources used in this work, Li/air batteries using Ketjenblack (KB) carbon-based air electrodes exhibited the highest specific energy. However, KB-based air electrodes expanded significantly and absorbed much more electrolyte than electrodes made from other carbon sources. The weight distribution of a typical Li/air battery using the KB-based air electrode was dominated by the electrolyte (~70%). Lithium-metal anodes and KB-carbon anodes account for only 5.12% and 5.78% of the battery weight, respectively. We also found that only ~ 20% of the mesopore volume of the air electrode was occupied by reaction products after discharge. To further improve the specific energy of the Li/air batteries, the microstructure of the carbon electrode needs to be further improved to absorb much less electrolyte while still holding significant amounts of reaction products

  12. Cooling the Planet: Opportunities for Deployment of Superefficient Room Air Conditioners

    E-Print Network [OSTI]

    Shah, Nihar

    2014-01-01T23:59:59.000Z

    HETAC, “High Efficiency Thermal Air Conditioning”, http://Refrigeration and Air Conditioning Industry Association,variable air volume air conditioning system for buildings”,

  13. INSTALLATION CERTIFICATE CF-6R-MECH-08 Ice Storage Air Conditioning (ISAC) Units (Page 1 of 2)

    E-Print Network [OSTI]

    cooling with the compressor). Yes No #12;INSTALLATION CERTIFICATE CF-6R-MECH-08 Ice Storage Air being full of ice. Verify that the system is operates properly in the Idle mode (i.e., the compressor in the Ice Melt mode (i.e., it starts discharging and that the compressor is off). Yes No 8 Force

  14. Analysis of the Window Side Thermal Environment Formed by Air Barrier Technique in Winter Conditions and Its Economy 

    E-Print Network [OSTI]

    Huang, C.; Jia, Y.; Liu, L.; Wang, X.

    2006-01-01T23:59:59.000Z

    strategy of this technology. It can be found that the air barrier technique, instead of the heating-supply around outside-zone for office building, can avoid dewfall in winter and decrease the cold radiation, which has a great effect on thermal environment...

  15. Analysis of the Window Side Thermal Environment Formed by Air Barrier Technique in Winter Conditions and Its Economy

    E-Print Network [OSTI]

    Huang, C.; Jia, Y.; Liu, L.; Wang, X.

    2006-01-01T23:59:59.000Z

    strategy of this technology. It can be found that the air barrier technique, instead of the heating-supply around outside-zone for office building, can avoid dewfall in winter and decrease the cold radiation, which has a great effect on thermal environment...

  16. ORIGINAL ARTICLE Ambient Air Pollution

    E-Print Network [OSTI]

    Mulholland, James A.

    ORIGINAL ARTICLE Ambient Air Pollution and Cardiovascular Emergency Department Visits Kristi Busico ambient air pollutants and cardiovascular disease (CVD), the roles of the physicochemical components the relation between ambient air pollution and cardiovascular conditions using ambient air quality data

  17. "Table HC10.6 Air Conditioning Characteristics by U.S. Census Region, 2005"

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTownDells,1 U.S. Department of Energygasoline4 Space Heating8TotalTotal436 Air

  18. "Table HC10.7 Air-Conditioning Usage Indicators by U.S. Census Region, 2005"

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTownDells,1 U.S. Department of Energygasoline4 Space Heating8TotalTotal436 Air7

  19. 2014-09-23 Issuance: Energy Conservation Standard for Walk-in Coolers and Freezers; Air-Conditioning, Heating, & Refrigeration Institute Petition for Reconsideration Notice of Public Meeting

    Broader source: Energy.gov [DOE]

    This document is a pre-publication Federal Register notice of public meeting regarding energy conservation standards for walk-in coolers and freezers; Air-Conditioning, Heating, & Refrigeration Institute petition for reconsideration, as issued by the Deputy Assistant Secretary for Energy Efficiency on September 23, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

  20. 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]

    2012-01-01T23:59:59.000Z

    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

  1. 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]

    2012-01-01T23:59:59.000Z

    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

  2. Distribution of small dispersive coal dust particles and absorbed radioactive chemical elements in conditions of forced acoustic resonance in iodine air filter at nuclear power plant

    E-Print Network [OSTI]

    Oleg P. Ledenyov; Ivan M. Neklyudov

    2013-06-14T23:59:59.000Z

    The physical features of distribution of the small dispersive coal dust particles and the adsorbed radioactive chemical elements and their isotopes in the absorber with the granular filtering medium with the cylindrical coal granules were researched in the case of the intensive air dust aerosol stream flow through the iodine air filter (IAF). It was shown that, at the certain aerodynamic conditions in the IAF, the generation of the acoustic oscillations is possible. It was found that the acoustic oscillations generation results in an appearance of the standing acoustic waves of the air pressure (density) in the IAF. In the case of the intensive blow of the air dust aerosol, it was demonstrated that the standing acoustic waves have some strong influences on both: 1) the dynamics of small dispersive coal dust particles movement and their accumulation in the IAF; 2) the oversaturation of the cylindrical coal granules by the adsorbed radioactive chemical elements and their isotopes in the regions, where the antinodes of the acoustic waves are positioned. Finally, we completed the comparative analysis of the theoretical calculations with the experimental results, obtained for the cases of: 1) the experimental aerodynamic modeling of physical processes of the absorbed radioactive chemical elements and their isotopes distribution in the IAF; and 2) the gamma-activation spectroscopy analysis of the absorbed radioactive chemical elements and their isotopes distribution in the IAF. We made the innovative propositions on the necessary technical modifications with the purpose to improve the IAF technical characteristics and increase its operational time at the nuclear power plant (NPP), going from the completed precise characterization of the IAF parameters at the long term operation.

  3. BTU Accounting for Industry

    E-Print Network [OSTI]

    Redd, R. O.

    1979-01-01T23:59:59.000Z

    , salesmen cars, over the highway trucks, facilities startup, waste used as fuel and fuels received for storage. This is a first step in the DOE's effort to establish usage guidelines for large industrial users and, we note, it requires BTU usage data...-generated electricity, heating, ventilating, air conditioning, in-plant transportation, ore hauling, raw material storage and finished product warehousing. Categories which are excluded are corporate and divisional offices, basic research, distribution centers...

  4. Air-Con International: Noncompliance Determination and Proposed...

    Energy Savers [EERE]

    Notice of Noncompliance Determination to Air-Con International finding that a variety of central air conditioners and air conditioning heat pumps distributed under the Air-Con...

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

    E-Print Network [OSTI]

    Sheng, G.; Xie, G.

    2006-01-01T23:59:59.000Z

    -conditioning has many merits such as clean, safety, high COP, longevity of service, low price and maintenance easily. But it also has weak aspects, for example, its power consumption is higher, which has became the main hidden trouble of electric network..., stability of running, service life, maintenance, price, and so on. There are 3 kinds of common water chilling units, which are the centrifugal compressor chiller? the ICEBO2006, Shenzhen, China Building Commissioning for Energy Efficiency...

  6. Residential Forced Air System Cabinet Leakage and Blower Performance

    E-Print Network [OSTI]

    Walker, Iain S.

    2010-01-01T23:59:59.000Z

    Driven Unitary  Air?Conditioning and Heat Pump Equipment”.  Air Conditioning &  Air?source Heat Pump Equipment.  Air?apply to the air handlers of heat pumps and electric 

  7. Risk Factors in Heating, Ventilating, and Air-Conditioning Systemsfor Occupant Symptoms in U.S. Office Buildings: the EPA BASE Study

    SciTech Connect (OSTI)

    Mendell, M.J.; Lei-Gomez, Q.; Mirer, A.; Seppanen, O.; Brunner, G.

    2006-10-01T23:59:59.000Z

    Nonspecific building-related symptoms among occupants of modern office buildings worldwide are common and may be associated with important reductions in work performance, but their etiology remains uncertain. Characteristics of heating, ventilating, and air-conditioning (HVAC) systems in office buildings that increase risk of indoor contaminants or reduce effectiveness of ventilation may cause adverse exposures and subsequent increase in these symptoms among occupants. We analyzed data collected by the U.S. EPA from a representative sample of 100 large U.S. office buildings--the Building Assessment and Survey Evaluation (BASE) study--using multivariate logistic regression models with generalized estimating equations adjusted for potential personal and building confounders. We estimated odds ratios (ORs) and 95% confidence intervals (CIs) for associations between seven building-related symptom outcomes and selected HVAC system characteristics. Among factors of HVAC design or configuration: Outdoor air intakes less than 60 m above the ground were associated with approximately doubled odds of most symptoms assessed. Sealed (non-operable) windows were associated with increases in skin and eye symptoms (ORs= 1.9, 1.3, respectively). Outdoor air intake without an intake fan was associated with an increase in eye symptoms (OR=1.7). Local cooling coils were associated with increased headache (OR=1.5). Among factors of HVAC condition, maintenance, or operation: the presence of humidification systems in good condition was associated with an increase in headache (OR=1.4), whereas the presence of humidification systems in poor condition was associated with increases in fatigue/difficulty concentrating, as well as upper respiratory symptoms (ORs=1.8, 1.5). No regularly scheduled inspections for HVAC components was associated with increased eye symptoms, cough and upper respiratory symptoms (ORs=2.2, 1.6, 1.5). Less frequent cleaning of cooling coils or drip pans was associated with increased headache (OR=1.6). Fair or poor condition of duct liner was associated with increased upper respiratory symptoms (OR=1.4). Most of the many potential risk factors assessed here had not been investigated previously, and associations found with single symptoms may have been by chance, including several associations that were the reverse of expected. Risk factors newly identified in these analyses that deserve attention include outdoor air intakes less than 60 m above the ground, lack of operable windows, poorly maintained humidification systems, and lack of scheduled inspection for HVAC systems. Infrequent cleaning of cooling coils and drain pans were associated with increases in several symptoms in these as well as prior analyses of BASE data. Replication of these findings is needed, using more objective measurements of both exposure and health response. Confirmation of the specific HVAC factors responsible for increased symptoms in buildings, and development of prevention strategies could have major public health and economic benefits worldwide.

  8. Compressed Air 101: Getting Compressed Air to Work

    E-Print Network [OSTI]

    Burke, J. J.; Bessey, E. G.

    "Air compressors are a significant industrial energy user. Based on a survey (conducted by Oregon State University and the Bonneville Power Administration) of energy audit reports from 125 plants, air compressors account for roughly 10% of total...

  9. Extending air temperature setpoints: Simulated energy savings and design considerations for new and retrofit buildings

    E-Print Network [OSTI]

    Hoyt, Tyler; Arens, Edward; Zhang, Hui

    2014-01-01T23:59:59.000Z

    Refrigerating, and Air Conditioning Engineers (ASHRAE);Refrigerating and Air Conditioning Engineers (ASHRAE); 2012.Refrigerating and Air-Conditioning Engineers (ASHRAE); [5

  10. Evaluation of an Incremental Ventilation Energy Model for Estimating Impacts of Air Sealing and Mechanical Ventilation

    E-Print Network [OSTI]

    Logue, Jennifer M.

    2014-01-01T23:59:59.000Z

    Calculation 8th Edition, Air Conditioning Contractors ofArlington, VA, Air-Conditioning, Heating and RefrigerationRefrigerating and Air Conditioning Engineers. Standard 136.

  11. Commissioning Residential Ventilation Systems: A Combined Assessment of Energy and Air Quality Potential Values

    E-Print Network [OSTI]

    Turner, William J.N.

    2014-01-01T23:59:59.000Z

    Washinton D.C. , Air Conditioning Contractors of America.Refrigeration and Air Conditioning Engineers. ASHRAE 2009a.Refrigerating, and Air-Conditioning Engineers. ASHRAE 2009b.

  12. BUILDING VENTILATION AND INDOOR AIR QUALITY PROGRAM. CHAPTER FROM ENERGY AND ENVIRONMENT DIVISION ANNUAL REPORT 1978

    E-Print Network [OSTI]

    Cairns, Elton J.

    2011-01-01T23:59:59.000Z

    occupants. The heating, ventilation and air conditioning (third of the heating, ventilation, and air conditioning (see Fig. 1) Heating ventilation and air conditioning (HVAC)

  13. Future Air Conditioning Energy Consumption in Developing Countries and what can be done about it: The Potential of Efficiency in the Residential Sector

    E-Print Network [OSTI]

    McNeil, Michael A.; Letschert, Virginie E.

    2008-01-01T23:59:59.000Z

    an air conditioner for the first time, or by replacements ofair conditioner lifetime. Each retirement generates another replacementreplacements. Step 1 is described in detail in the section called Forecasting Air Conditioner

  14. Future Air Conditioning Energy Consumption in Developing Countries and what can be done about it: The Potential of Efficiency in the Residential Sector

    E-Print Network [OSTI]

    McNeil, Michael A.; Letschert, Virginie E.

    2008-01-01T23:59:59.000Z

    an air conditioner for the first time, or by replacements ofair conditioner lifetime. Each retirement generates another replacementand replacements. Step 1 is described in detail in the section called Forecasting Air Conditioner

  15. Account Executive Account Manager of Sales

    E-Print Network [OSTI]

    Engineer Naval Surface Ship Warfare Officer Network Administrator Networking/Engineering Level II NetworkAccount Executive Account Manager of Sales Administrative Assistant Advanced Systems Engineer Engineer Assistant Administrator Assistant Analyst Assistant Development Engineer Assistant Director

  16. .......Agnew Hall .......Air Conditioning Facility

    E-Print Network [OSTI]

    Buehrer, R. Michael

    /Burleson Tennis Center .......Burruss Hall .......Campbell Hall .......Cassell Coliseum .......Central Stores .......Dietrick Hall .......Durham Hall .......Eggleston Hall .......Engel Hall D.....English Field .......Femoyer .......Golf Course Clubhouse .......Graduate Life Center at ........Donaldson Brown .......Greenhouses

  17. Air Conditioning | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sure you want toworldPower 2010 1A Potential PathAddingAhorre

  18. G1 Account: Guest Account Supporting Documentation

    E-Print Network [OSTI]

    Vertes, Akos

    G1 Account: Guest Account Supporting Documentation Phone: 202-994-7900 Fax: 202-994-4747 Email: acadtech@gwu.edu Web: http://acadtech.gwu.edu Supporting Documentation: Based on your role, please provide the Special Account Request Form along with reservation documentation from the Office of Academic Scheduling

  19. Duct Systems in large commercial buildings: Physical characterization, air leakage, and heat conduction gains

    E-Print Network [OSTI]

    Fisk, W.J.

    2011-01-01T23:59:59.000Z

    fabricators of heating, ventilation, and air conditioningof Building Heating, Ventilation, Air Conditioning, and

  20. Optimal Deployment of Thermal Energy Storage under Diverse Economic and Climate Conditions

    E-Print Network [OSTI]

    DeForest, Nicolas

    2014-01-01T23:59:59.000Z

    Sailor D, Palova AA. Air conditioning market saturation andof the developed world, air-conditioning in buildings is theincreasing utilization of air-conditioning places additional

  1. Numerical Analysis of a Cold Air Distribution System

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    Cold air distribution systems may reduce the operating energy consumption of air-conditioned air supply system and improve the outside air volume percentages and indoor air quality. However, indoor temperature patterns and velocity field are easily...

  2. air bag parameter: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    air temperatures... conditions. The design of this study was based on the relation- ship of four parameters: air temperature, air velocity, radiant heat, and globe...

  3. Equivalence in Ventilation and Indoor Air Quality

    SciTech Connect (OSTI)

    Sherman, Max; Walker, Iain; Logue, Jennifer

    2011-08-01T23:59:59.000Z

    We ventilate buildings to provide acceptable indoor air quality (IAQ). Ventilation standards (such as American Society of Heating, Refrigerating, and Air-Conditioning Enginners [ASHRAE] Standard 62) specify minimum ventilation rates without taking into account the impact of those rates on IAQ. Innovative ventilation management is often a desirable element of reducing energy consumption or improving IAQ or comfort. Variable ventilation is one innovative strategy. To use variable ventilation in a way that meets standards, it is necessary to have a method for determining equivalence in terms of either ventilation or indoor air quality. This study develops methods to calculate either equivalent ventilation or equivalent IAQ. We demonstrate that equivalent ventilation can be used as the basis for dynamic ventilation control, reducing peak load and infiltration of outdoor contaminants. We also show that equivalent IAQ could allow some contaminants to exceed current standards if other contaminants are more stringently controlled.

  4. Avoiding 100 New Power Plants by Increasing Efficiency of Room Air Conditioners in India: Opportunities and Challenges

    E-Print Network [OSTI]

    Phadke, Amol

    2014-01-01T23:59:59.000Z

    Heating, Refrigerating and Air-Conditioning Engineers, 2012.EER for the base case air conditioning unit is taken as the

  5. Impact of Independently Controlling Ventilation Rate per Person and Ventilation Rate per Floor Area on Perceived Air Quality, Sick Building Symptoms and Decision Making

    E-Print Network [OSTI]

    Maddalena, Randy

    2014-01-01T23:59:59.000Z

    REFRIGERATING AND AIR CONDITIONING ENGINEERS, 103, 244-255.Heating, Refrigerating, and Air Conditioning Engineers, Inc.REFRIGERATING AND AIR CONDITIONING ENGINEERS, 113(2), 466.

  6. air operating permit: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Air Distribution System Texas A&M University - TxSpace Summary: Cold air distribution systems may reduce the operating energy consumption of air-conditioned air supply system...

  7. Energy Efficient Process Heating: Managing Air Flow Kevin Carpenter and Kelly Kissock

    E-Print Network [OSTI]

    Kissock, Kelly

    temperature and decreased combustion gas mass flow rate. The method for calculating savings from preheating flow include minimizing combustion air, preheating combustion air, minimizing ventilation air from minimizing combustion air accounts for improvement in efficiency from increased combustion

  8. 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]

    Shendell, Derek Garth

    2010-01-01T23:59:59.000Z

    exposures and heating, ventilation, and air conditioningexposures and heating, ventilation, and air conditioningexposures and heating, ventilation, and air conditioning

  9. New Account Information page

    E-Print Network [OSTI]

    Information for new account holders ... for faculty, staff and students; Secure Purdue, including security news and tips and antivirus software downloads.

  10. Considering Air Density in Wind Power Production

    E-Print Network [OSTI]

    Zénó Farkas

    2011-03-11T23:59:59.000Z

    In the wind power production calculations the air density is usually considered as constant in time. Using the CIPM-2007 equation for the density of moist air as a function of air temperature, air pressure and relative humidity, we show that it is worth taking the variation of the air density into account, because higher accuracy can be obtained in the calculation of the power production for little effort.

  11. Considering Air Density in Wind Power Production

    E-Print Network [OSTI]

    Farkas, Zénó

    2011-01-01T23:59:59.000Z

    In the wind power production calculations the air density is usually considered as constant in time. Using the CIPM-2007 equation for the density of moist air as a function of air temperature, air pressure and relative humidity, we show that it is worth taking the variation of the air density into account, because higher accuracy can be obtained in the calculation of the power production for little effort.

  12. Annual Report and Accounts

    E-Print Network [OSTI]

    's Report on the Accounts Presented to the House of Commons pursuant to Section 7 of The Government Resources and Accounts Act 2000 Ordered by the House of Commons to be printed 15 July 2010 Forest Research . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Centre for Human and Ecological Sciences

  13. Annual Report and Accounts

    E-Print Network [OSTI]

    ;#12;Forest Research Annual Report and Accounts 2010­2011 Presented to the House of Commons pursuant to Section 7 of The Government Resources and Accounts Act 2000 Ordered by the House of Commons to be printed ...................................................... 12 Centre for Human and Ecological Sciences

  14. Accountable Officers' Accounts Records | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you0 ARRA Newsletters 20103-03 AUDIT REPORT:PatriciaAccidentAccountable

  15. Energy Efficiency in Compressed Air Systems

    E-Print Network [OSTI]

    Hingorani, A.; Pavlov, A.

    2010-01-01T23:59:59.000Z

    Energy use in compressed air systems accounts for typically 10% of the total industrial electricity consumption. It also accounts for close to 99% of the CO2 footprint of an air compressor and approximately 80% of the life cycle costs of a...

  16. Accounting | The Ames Laboratory

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWP TWP Related LinksATHENA Account Information Accounts andAccounting

  17. About Nuccio Heating & Air Headquartered in Tampa, Florida, Nuccio Heating & Air serves

    E-Print Network [OSTI]

    Fisher, Kathleen

    a customer say, `you installed my first air conditioner - yourself!'" Nuccio Heating & Air serves commercialAbout Nuccio Heating & Air Headquartered in Tampa, Florida, Nuccio Heating & Air serves commercial ­ the majority being highly mobile ­ sell and service heating and air conditioning systems for the company

  18. EMISSIONS TO AIR OPERATIONAL PROCEDURE

    E-Print Network [OSTI]

    Harman, Neal.A.

    and refrigeration equipment. To minimise pollution risks by ensuring regular maintenance of equipment containing Act 1993. SCOPE: All air-conditioning and refrigeration equipment METHOD: Air-conditioning and refrigeration equipment: 1. Swansea University uses equipment containing ozone-depleting substances

  19. E-Print Network 3.0 - airs requirements definition Sample Search...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and HVAC Summary: requires some processes called air-conditioning; including: Simple heating: raising the air temperature... air normally contains some water vapor (moisture)....

  20. Room air stratification in combined chilled ceiling and displacement ventilation systems.

    E-Print Network [OSTI]

    Schiavon, Stefano; Bauman, Fred; Tully, Brad; Rimmer, Julian

    2012-01-01T23:59:59.000Z

    Environments. Proceedings of Indoor Air 2005: 10 thInternational Conference on Indoor Air Quality and Climate,displacement ventilation hybrid air conditioning system-

  1. Environmental Conditions Environmental Conditions

    E-Print Network [OSTI]

    Environmental Conditions Environmental Conditions Appendix II The unique geology, hydrology and instream habitat. This chapter examines how environmental conditions in the Deschutes watershed affect, the discussion characterizes the environmental conditions within three watershed areas: the Lower Deschutes

  2. U.S. Environmental Protection Agency Clean Air Act notice of construction for spent nuclear fuel project - hot conditioning system annex, project W-484

    SciTech Connect (OSTI)

    Baker, S.K., Westinghouse Hanford

    1996-12-10T23:59:59.000Z

    This notice of construction (NOC) provides information regarding the source and the estimated quantity of potential airborne radionuclide emissions resulting from the operation of the Hot Conditioning System (HCS) Annex. The construction of the HCS Annex is scheduled to conunence on or about December 1996, and will be completed when the process equipment begins operations. This document serves as a NOC pursuant to the requirements of 40 Code of Federal Regulations (CFR) 61 for the HCS Annex. About 80 percent of the U.S. Department of Energy`s spent nuclear fuel (SNF) inventory is stored under water in the Hanford Site K Basins. Spent nuclear fuel in the K West Basin is contained in closed canisters, while the SNF in the K East Basin is contained in open canisters, which allows release of corrosion products to the K East Basin water. Storage of the current inventory in the K Basins was originally intended to be on an as-needed basis to sustain operation of the N Reactor while the Plutonium-Uranium Extraction (PUREX) Plant was refurbished and restarted. The decision in December 1992 to deactivate the PUREX Plant left approximately 2, 1 00 MT (2,300 tons) of uranium, as part of 1133 N Reactor SNF in the K Basins with no means for near-term removal and processing. The HCS Annex will be constructed as an annex to the Canister Storage Building (CSB) and will contain the hot conditioning equipment. The hot conditioning system (HCS) will release chemically-bound water and will condition (process of using a controlled amount of oxygen to destroy uranium hydride) the exposed uranium surfaces associated with the SNF through oxidation. The HCS Annex will house seven hot conditioning process stations, six operational and one auxiliary, which could be used as a welding area for final closure of the vessel containing the SNF. The auxiliary pit is being evaluated at this time for its usefulness to support other operations that may be needed to ensure proper conditioning of the SNF and proper storage of the vessel containing the SNF. Figures I and 2 contain map locations of the Hanford Site and the HCS Annex.

  3. Meteorological Effects on Air/Fuel Ratio

    E-Print Network [OSTI]

    Ferri, J. L.

    1984-01-01T23:59:59.000Z

    ) where subscript 1 indicates at condition 1 and subsc 1pt 2 Indicates at condition 2. Solving for E gives 2 100. (E . 13) Example 1 A furnace with a pressure type ratio control sys~em is calibrated at 10% excess air with 30 of air. If the air... of ... 30 of ... 460? 590 oR Substituting in Equation 13 and solving for E gives 2 E = (100 ... 10) (:;~)II, - 100 = 3.3% excess ir. 2 If the furnace had been calibrated to 10% excess air with iOO of air, the % excess air with 30 of air would bJI 590 II...

  4. Multi-timescale modeling of ignition and flame regimes of n-heptane-air mixtures near spark assisted homogeneous charge compression ignition conditions

    SciTech Connect (OSTI)

    Ju, Yiguang; Sun, Wenting; Burke, M. P.; Gou, Xiaolong; Chen, Zheng

    2011-01-01T23:59:59.000Z

    The flame regimes of ignition and flame propagation as well as transitions between different flame regimes of n-heptane-air mixtures in a one-dimensional, cylindrical, spark assisted homogeneously charged compression ignition (HCCI) reactor are numerically modeled using a multi-timescale method with reduced kinetic mechanism. It is found that the initial mixture temperature and pressure have a dramatic impact on flame dynamics. Depending on the initial temperature gradient, there exist at least six different combustion regimes, an initial single flame front propagation regime, a coupled low temperature and high temperature double-flame regime, a decoupled low temperature and high temperature double-flame regime, a low temperature ignition regime, a single high temperature flame regime, and a hot ignition regime. The results show that the low temperature and high temperature flames have distinct kinetic and transport properties as well as flame speeds, and are strongly influenced by the low temperature chemistry. The pressure and heat release rates are affected by the appearance of different flame regimes and the transitions between them. Furthermore, it is found that the critical temperature gradient for ignition and acoustic wave coupling becomes singular at the negative temperature coefficient (NTC) region. The results show that both the NTC effect and the acoustic wave propagation in a closed reactor have a dramatic impact on the ignition front and acoustic interaction.

  5. Econometrics of the Basu Asymmetric Timeliness Coefficient and Accounting Conservatism

    E-Print Network [OSTI]

    BALL, RAY

    A substantial literature investigates conditional conservatism, defined as asymmetric accounting recognition of economic shocks (“news”), and how it depends on various market, political, and institutional variables. Studies ...

  6. Computerized accounting methods. Final report

    SciTech Connect (OSTI)

    NONE

    1994-12-31T23:59:59.000Z

    This report summarizes the results of the research performed under the Task Order on computerized accounting methods in a period from 03 August to 31 December 1994. Computerized nuclear material accounting methods are analyzed and evaluated. Selected methods are implemented in a hardware-software complex developed as a prototype of the local network-based CONMIT system. This complex has been put into trial operation for test and evaluation of the selected methods at two selected ``Kurchatov Institute`` Russian Research Center (``KI`` RRC) nuclear facilities. Trial operation is carried out since the beginning of Initial Physical Inventory Taking in these facilities that was performed in November 1994. Operation of CONMIT prototype system was demonstrated in the middle of December 1994. Results of evaluation of CONMIT prototype system features and functioning under real operating conditions are considered. Conclusions are formulated on the ways of further development of computerized nuclear material accounting methods. The most important conclusion is a need to strengthen computer and information security features supported by the operating environment. Security provisions as well as other LANL Client/Server System approaches being developed by Los Alamos National Laboratory are recommended for selection of software and hardware components to be integrated into production version of CONMIT system for KI RRC.

  7. Residential Forced Air System Cabinet Leakage and Blower Performance

    E-Print Network [OSTI]

    Walker, Iain S.

    2010-01-01T23:59:59.000Z

    CA.   CEC (2008b).  Residential Alternative Calculation Standard for Air Handlers in Residential Space Conditioning of Standards Options for Residential Air Handler Fans.   

  8. Sealed Radioactive Source Accountability

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1991-12-24T23:59:59.000Z

    To establish Department of Energy (DOE) interim policy and to provide guidance for sealed radioactive source accountability. The directive does not cancel any directives. Extended by DOE N 5400.10 to 12-24-93 & Extended by DOE N 5400.12 to 12-24-94.

  9. STAR Facility Tritium Accountancy

    SciTech Connect (OSTI)

    R. J. Pawelko; J. P. Sharpe; B. J. Denny

    2007-09-01T23:59:59.000Z

    The Safety and Tritium Applied Research (STAR) facility has been established to provide a laboratory infrastructure for the fusion community to study tritium science associated with the development of safe fusion energy and other technologies. STAR is a radiological facility with an administrative total tritium inventory limit of 1.5g (14,429 Ci) [1]. Research studies with moderate tritium quantities and various radionuclides are performed in STAR. Successful operation of the STAR facility requires the ability to receive, inventory, store, dispense tritium to experiments, and to dispose of tritiated waste while accurately monitoring the tritium inventory in the facility. This paper describes tritium accountancy in the STAR facility. A primary accountancy instrument is the tritium Storage and Assay System (SAS): a system designed to receive, assay, store, and dispense tritium to experiments. Presented are the methods used to calibrate and operate the SAS. Accountancy processes utilizing the Tritium Cleanup System (TCS), and the Stack Tritium Monitoring System (STMS) are also discussed. Also presented are the equations used to quantify the amount of tritium being received into the facility, transferred to experiments, and removed from the facility. Finally, the STAR tritium accountability database is discussed.

  10. STAR facility tritium accountancy

    SciTech Connect (OSTI)

    Pawelko, R. J.; Sharpe, J. P.; Denny, B. J. [Idaho National Laboratory, P.O. Box 1625, Idaho Falls, ID 83415 (United States)

    2008-07-15T23:59:59.000Z

    The Safety and Tritium Applied Research (STAR) facility has been established to provide a laboratory infrastructure for the fusion community to study tritium science associated with the development of safe fusion energy and other technologies. STAR is a radiological facility with an administrative total tritium inventory limit of 1.5 g (14,429 Ci) [1]. Research studies with moderate tritium quantities and various radionuclides are performed in STAR. Successful operation of the STAR facility requires the ability to receive, inventory, store, dispense tritium to experiments, and to dispose of tritiated waste while accurately monitoring the tritium inventory in the facility. This paper describes tritium accountancy in the STAR facility. A primary accountancy instrument is the tritium Storage and Assay System (SAS): a system designed to receive, assay, store, and dispense tritium to experiments. Presented are the methods used to calibrate and operate the SAS. Accountancy processes utilizing the Tritium Cleanup System (TCS), and the Stack Tritium Monitoring System (STMS) are also discussed. Also presented are the equations used to quantify the amount of tritium being received into the facility, transferred to experiments, and removed from the facility. Finally, the STAR tritium accountability database is discussed. (authors)

  11. Sealed Radioactive Source Accountability

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1994-12-22T23:59:59.000Z

    This Notice extends DOE N 5400.9, Sealed Radioactive Source Accountability, of 12-24-91, until 12-24-95, unless sooner superseded or rescinded. The contents of DOE N 5400.9 will be updated and incorporated in the revised DOE O 5480.11, Radiation Protection for Occupational Workers.

  12. MATERIAL CONTROL ACCOUNTING INMM

    SciTech Connect (OSTI)

    Hasty, T.

    2009-06-14T23:59:59.000Z

    Since 1996, the Mining and Chemical Combine (MCC - formerly known as K-26), and the United States Department of Energy (DOE) have been cooperating under the cooperative Nuclear Material Protection, Control and Accounting (MPC&A) Program between the Russian Federation and the U.S. Governments. Since MCC continues to operate a reactor for steam and electricity production for the site and city of Zheleznogorsk which results in production of the weapons grade plutonium, one of the goals of the MPC&A program is to support implementation of an expanded comprehensive nuclear material control and accounting (MC&A) program. To date MCC has completed upgrades identified in the initial gap analysis and documented in the site MC&A Plan and is implementing additional upgrades identified during an update to the gap analysis. The scope of these upgrades includes implementation of MCC organization structure relating to MC&A, establishing material balance area structure for special nuclear materials (SNM) storage and bulk processing areas, and material control functions including SNM portal monitors at target locations. Material accounting function upgrades include enhancements in the conduct of physical inventories, limit of error inventory difference procedure enhancements, implementation of basic computerized accounting system for four SNM storage areas, implementation of measurement equipment for improved accountability reporting, and both new and revised site-level MC&A procedures. This paper will discuss the implementation of MC&A upgrades at MCC based on the requirements established in the comprehensive MC&A plan developed by the Mining and Chemical Combine as part of the MPC&A Program.

  13. Effect of Return Air Leakage on Air Conditioner Performance in Hot/Humid Climates 

    E-Print Network [OSTI]

    O'Neal, D. L.; Rodriguez, A.; Davis, M.; Kondepudi, S.

    1996-01-01T23:59:59.000Z

    provided rebates to residential customers for purchasing high efficiency air conditioners and heat pumps. The rebates have helped increase the demand for higher efficiency air conditioning units. However, even the most efficient system will not perform... quanm the effect of air leakage in the return air duct from a hot attic space on the high-temperature performance of air conditioners and heat pump systems. Air conditioner performance is quantified in terms of capacity, Energy Efficiency Ratio (EER...

  14. EVENT CLOUDS : lighter than air architectural structures

    E-Print Network [OSTI]

    Peydro Duclos, Ignacio

    2014-01-01T23:59:59.000Z

    EVENT CLOUD is a versatile covering system that allows events to happen independently to weather conditions. It consists of a lighter than air pneumatic structure, filled either with helium or hot air, that covers spaces ...

  15. Air Quality Standards and Nuisance Issues for Animal Agriculture

    E-Print Network [OSTI]

    Mukhtar, Saqib; Auvermann, Brent W.

    2006-05-24T23:59:59.000Z

    Animal feeding operations face increased scrutiny and accountability for how they affect the air quality of their neighbors and communities. This publication helps operators become familiar with fundamental air quality principles, which will help...

  16. Accounting and Finance Is Accounting and Finance right for me?

    E-Print Network [OSTI]

    Harman, Neal.A.

    Accounting and Finance Is Accounting and Finance right for me? A degree in Accounting and/or Finance will suit you if you have an interest in the banking, investment banking or finance sector an Accounting and/or Finance degree are wide- ranging and provide a good basis for employment in almost any

  17. Student Trainee (Accounting)

    Broader source: Energy.gov [DOE]

    Where would I be working? Western Area Power Administration Rocky Mountain Region Financial Management, (J8000) 5555 E. Crossroads Blvd. Loveland, CO 80538 Find out more about living conditions at...

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

    E-Print Network [OSTI]

    Wang, J.; Yan, Z.

    2006-01-01T23:59:59.000Z

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

  19. Group Accounts on genepool

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) Environmental AssessmentsGeoffrey(SC)GraphiteCollaboration Accounts on genepool

  20. NERSC Account Terminology

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your1 SECTIONES2008-54174MoreMuseum|NEESReadingAccounts »

  1. Forest Research Annual Report and Accounts

    E-Print Network [OSTI]

    , comprising a total value of £1.4 billion (2 billion), the bulk of which is produced by European forest tree stock in an inactive condition for extended periods, and to ensure plant quality where supply. #12;Forest Research Annual Report and Accounts 2004­2005 41 Assessing seedling quality Despite

  2. Accounting & Finance (BAcc) Induction 2014

    E-Print Network [OSTI]

    Glasgow, University of

    Accounting & Finance (BAcc) Induction 2014 Monday 15 September 2014 Induction Programme: 0945] Welcome from the Business School and Accounting & Finance 1000 The Accountancy Degrees 1015 Programme & 3 on Level 4 Accounting & Finance Bldg Tuesday 16 September 2014 Advising Session Lunch (provided

  3. 2012ANNUAL REPORT AND ACCOUNTS

    E-Print Network [OSTI]

    Birmingham, University of

    and Estimation Techniques 21 Consolidated Income and Expenditure Account 25 Balance Sheets 26 Consolidated Cash Flow Statement 28 Consolidated Statement of Total Recognised Gains and Losses 29 Notes to the Accounts2011 2012ANNUAL REPORT AND ACCOUNTS #12;Annual Report and Accounts 2011/12 32 Annual Report

  4. Assessing the Impact of Measurement Policy on the Accuracy of Certified Energy Efficiency Ratio for Split-System Air Conditioners

    E-Print Network [OSTI]

    Yu, Bingyi

    2013-01-01T23:59:59.000Z

    of Unitary Air Conditioners and Heat Pumps, ASHRAE, 1791of Unitary Air Conditioner and Heat Pump Simulation Modelsfor Rating Unitary Air-Conditioning and Heat Pump Equipment,

  5. Alternative Air Conditioning Technologies: Underfloor Air Distribution (UFAD)

    E-Print Network [OSTI]

    Webster, Tom

    2004-01-01T23:59:59.000Z

    trends in today’s office environment make it increasingly more difficult for conventional centralized HVAC

  6. Rating of Mixed Split Residential Air Conditioners

    E-Print Network [OSTI]

    Domanski, P. A.

    1988-01-01T23:59:59.000Z

    A methodology is presented for rating the performance of mixed, split residential air conditioners. The method accounts for the impact on system performance of the indoor evaporator, expansion device and fan; three major components that are likely...

  7. air suspension system: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and Comparison of Waste Water Resource Heat Pump Heating and Air-Conditioning System Texas A&M University - TxSpace Summary: Based on the heating and air-conditioning system...

  8. air suspension systems: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and Comparison of Waste Water Resource Heat Pump Heating and Air-Conditioning System Texas A&M University - TxSpace Summary: Based on the heating and air-conditioning system...

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

    E-Print Network [OSTI]

    Jump, D.A.

    2011-01-01T23:59:59.000Z

    power for air conditioning, heat pumps and electricwith 13 air conditioners, eight heat pumps (one house hadPre Post * A C : air conditioning, HP : heat pump, GF : gas

  10. Alternative Refrigerants for Building Air Conditioning 

    E-Print Network [OSTI]

    Bivens, D. B.

    1996-01-01T23:59:59.000Z

    , and HFC-245ca. HCFC-22 is also scheduled for phase-out, and three alternatives for HCFC-22 have been identified: HFC-134a, a near-azeotropic mixture of R32/Rl25, and a zeotropic mixture of R32/R125/R134a. Performance test results, future potential energy...

  11. Air-Conditioning Basics | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sure you want toworldPower 2010 1A Potential PathAddingAhorreLeaks

  12. Heating, Ventilation and Air Conditioning Efficiency

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To:Department of Energy CompletingPresented By: WALTER E. JOHNSTON, PE

  13. Heating, Ventilation and Air Conditioning Efficiency

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking of Blythe Solar Power ProjectHawai'iPresented By: WALTER E. JOHNSTON, PE

  14. SSRL Computer Account Request Form

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    SSRLLCLS Computer Account Request Form August 2009 Fill in this form and sign the security statement mentioned at the bottom of this page to obtain an account. Your Name:...

  15. Proposal for the award of a contract for the design, supply, installation and commissioning of a ventilation and air conditioning system for the ECN3 experimental area and the TCC8 and GHN300 service tunnels and for the dismantling of the existing system

    E-Print Network [OSTI]

    2014-01-01T23:59:59.000Z

    Proposal for the award of a contract for the design, supply, installation and commissioning of a ventilation and air conditioning system for the ECN3 experimental area and the TCC8 and GHN300 service tunnels and for the dismantling of the existing system

  16. Exposure information in environmental health research: Current opportunities and future directions for particulate matter, ozone, and toxic air pollutants

    E-Print Network [OSTI]

    McKone, Thomas E.

    2008-01-01T23:59:59.000Z

    Hodis, H.N. Ambient air pollution and atherosclerosis in Loslife style, genetics, and air pollution). An accountabilityH.E. , Peters A. , Air pollution and markers of inflammation

  17. Strategy Guideline: Compact Air Distribution Systems

    SciTech Connect (OSTI)

    Burdick, A.

    2013-06-01T23:59:59.000Z

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

  18. Optimal combination of data verification and materials accountancy

    SciTech Connect (OSTI)

    Beedgen, R.; Hafer, J.F.

    1982-01-01T23:59:59.000Z

    Materials accountancy accompanied by data verification is one of the main elements in international safeguards of nuclear material. In this paper statistical combinations of materials accountancy and data verification are discussed with the boundary condition of a fixed total false-alarm probability.

  19. Neutron probe measurements of air saturation near an air sparging well

    SciTech Connect (OSTI)

    Acomb, L.J. [Geosphere, Inc., Anchorage, AK (United States); McKay, D.; Currier, P. [Army Corps of Engineers, Hanover, NH (United States). Cold Regions Research Engineering Lab.; Berglund, S.T.; Sherhart, T.V.; Benediktsson, C.V. [Federal Aviation Administration, Anchorage, AK (United States). Airway Facilities Div.

    1995-12-31T23:59:59.000Z

    In situ air sparging is being used to remediate diesel-fuel-contaminated soils in the zone of water table fluctuation at a remote Alaskan Federal Aviation Administration (FAA) air navigation aid site. A neutron probe was used to measure changes in percent air saturation during air sparging in a uniform, aeolian sand. Air was injected about 15 ft below the water table at air flowrates of 4 to 16 ft{sup 3}/min (cfm). The neutron probe data show that during air sparging the distribution of injected air changed through time, initially expanding outward from the sparge well screen, then consolidating around the air sparging well, until a steady-state condition was reached. The maximum radius of influence, measured at an air flowrate of 16 cfm, was about 15 ft during steady-state flow. At all air flowrates the percent air saturation was highest near the air sparging well and decreased radially away from the sparging well. Near the sparging well, the percent air saturation ranged from about 30% to >50% at air injection rates of 4 to 16 cfm. Where the percent air saturation is similar to that in the vadose zone, volatilization and biodegradation may occur at rates similar to those in the vadose zone. Selected air saturation results are presented, and dissolved oxygen and saturated zone pressure data are summarized.

  20. Nuclear Materials Control and Accountability

    Broader source: Energy.gov (indexed) [DOE]

    June 2011 DOE STANDARD Nuclear Materials Control and Accountability U.S. Department of Energy AREA SANS Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public...

  1. Reducing Air Compressor Work by Using Inlet Air Cooling and Dehumidification 

    E-Print Network [OSTI]

    Hardy, Mark James

    2011-02-22T23:59:59.000Z

    are sensitive to ambient conditions, as evidenced by the fact that compressing cooler and drier air decreases the amount of work required to compress the air. A thermodynamic model of an air compressor system was developed and several cases were run by using...

  2. Air Quality: Construction Project Air Permit Requirements

    E-Print Network [OSTI]

    Wechsler, Risa H.

    Air Quality: Construction Project Air Permit Requirements Department: Chemical and General Safety Program: Air Quality Owner: Program Manager Authority: ES&H Manual, Chapter 30, Air Quality1 All manager or operator must submit the completed form to the air quality program manager before the project

  3. Air Quality and Emissions Impacts of Heat Island Mitigation Strategies

    E-Print Network [OSTI]

    Air Quality and Emissions Impacts of Heat Island Mitigation Strategies ENVIRONMENTAL AREA RESEARCH the temperature of the ground surface and the ambient air. This situation creates areas called urban heat summertime temperatures reduces electricity demand for air conditioning, which lowers air pollution levels

  4. STRATEGIC PLAN TO REDUCE THE ENERGY IMPACT OF AIR CONDITIONERS

    E-Print Network [OSTI]

    CALIFORNIA ENERGY COMMISSION STRATEGIC PLAN TO REDUCE THE ENERGY IMPACT OF AIR CONDITIONERS Acknowledgements This report represents the efforts of many experts from the air conditioning industry who Manufacturer Freus Air Conditioning Jim Bazemore Consultant Energy Market Innovations, Inc. Doug Beaman

  5. Carbon Storage Monitoring, Verification and Accounting Research...

    Office of Environmental Management (EM)

    Monitoring, Verification and Accounting Research Carbon Storage Monitoring, Verification and Accounting Research Reliable and cost-effective monitoring, verification and accounting...

  6. Accounting

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1995-09-29T23:59:59.000Z

    Cancels DOE 2100.3A, DOE 2200.4, DOE 2200.5B, DOE 2200.6A, DOE 2200.7, DOE 2200.8B, DOE 2200.9B, DOE 2200.10A. Canceled by DOE O 534.1A.

  7. accountability

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA Approved:AdministrationAnalysisDarby Dietrich5 | NUMBER643|AboutM0572

  8. Air Pollution (Illinois)

    Broader source: Energy.gov [DOE]

    This article states regulations for monitoring air pollution, methods for permit applications, emission limitations for pollutants and air quality standards.

  9. Nuclear Material Control and Accountability

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2005-08-26T23:59:59.000Z

    The manual establishes a program for the control and accountability of nuclear materials within the Department of Energy. Cancels: DOE M 474.1-1B DOE M 474.1-2A

  10. Nuclear Material Control and Accountability

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2005-08-26T23:59:59.000Z

    The manual establishes a program for the control and accountability of nuclear materials within the Department of Energy. Chg 1, dated 8-14-06. Canceled by DOE O 474.2.

  11. air flow maldistribution: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    central air conditioning system on the basis... Liu, J.; Mai, Y.; Liu, X. 2006-01-01 77 Overheat Instability in an Ascending Moist Air Flow as a Mechanism of Hurricane Formation...

  12. air voc flow: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    central air conditioning system on the basis... Liu, J.; Mai, Y.; Liu, X. 2006-01-01 97 Overheat Instability in an Ascending Moist Air Flow as a Mechanism of Hurricane Formation...

  13. air conditioner units: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Air Service White Paper series. The ... Wittman, Michael D. 2013-05-07 65 Proposal for an Adsorption Solar-Driven Air-Conditioning Unit for Public Offices Texas A&M University -...

  14. Optimizing Electric Humidifier Operation with an Air Side Economizer

    E-Print Network [OSTI]

    Shami, U. F.

    1996-01-01T23:59:59.000Z

    Air side economizer cycle is a control scheme that is often used in WAC systems to reduce cooling energy consumption by introducing variable quantities of ambient air into a conditioned space to satisfy the space cooling load (free cooling...

  15. Department 2 Taxation, Accounting and Finance

    E-Print Network [OSTI]

    Hellebrand, Sybille

    Department 2 Taxation, Accounting and Finance #12;Department 2: Taxation, Accounting and Finance 2, Investition #12;Department 2: Taxation, Accounting and Finance 3 Übersicht Lehrstühle des Department 2 Prof #12;Department 2: Taxation, Accounting and Finance 4 Finanzwirtschaft und Bankbetriebslehre

  16. EECBG Direct Equipment Purchase Air Conditioner Guide Equipment Type

    E-Print Network [OSTI]

    EECBG Direct Equipment Purchase Air Conditioner Guide Equipment Type Size Category (Btu/h) Size.ahridirectory.org/ceedirectory/pages/ac/cee/defaultSearch.aspx 12,000 Btu/h = 1 ton Less than 65,000 Btu/h Air Conditioners, Air Cooled Air Conditioners, Water completed by the California Energy Commission at a rate of 12,000 Btu/h per ton of air conditioning Source

  17. Air Leakage and Air Transfer Between Garage and Living Space

    SciTech Connect (OSTI)

    Rudd, A.

    2014-09-01T23:59:59.000Z

    This research project focused on evaluation of air transfer between the garage and living space in a single-family detached home constructed by a production homebuilder in compliance with the 2009 International Residential Code and the 2009 International Energy Conservation Code. The project gathered important information about the performance of whole-building ventilation systems and garage ventilation systems as they relate to minimizing flow of contaminated air from garage to living space. A series of 25 multi-point fan pressurization tests and additional zone pressure diagnostic testing characterized the garage and house air leakage, the garage-to-house air leakage, and garage and house pressure relationships to each other and to outdoors using automated fan pressurization and pressure monitoring techniques. While the relative characteristics of this house may not represent the entire population of new construction configurations and air tightness levels (house and garage) throughout the country, the technical approach was conservative and should reasonably extend the usefulness of the results to a large spectrum of house configurations from this set of parametric tests in this one house. Based on the results of this testing, the two-step garage-to-house air leakage test protocol described above is recommended where whole-house exhaust ventilation is employed. For houses employing whole-house supply ventilation (positive pressure) or balanced ventilation (same pressure effect as the Baseline condition), adherence to the EPA Indoor airPLUS house-to-garage air sealing requirements should be sufficient to expect little to no garage-to-house air transfer.

  18. MASS: An automated accountability system

    SciTech Connect (OSTI)

    Erkkila, B.H.; Kelso, F.

    1994-08-01T23:59:59.000Z

    All Department of Energy contractors who manage accountable quantities of nuclear materials are required to implement an accountability system that tracks, and records the activities associated with those materials. At Los Alamos, the automated accountability system allows data entry on computer terminals and data base updating as soon as the entry is made. It is also able to generate all required reports in a timely Fashion. Over the last several years, the hardware and software have been upgraded to provide the users with all the capability needed to manage a large variety of operations with a wide variety of nuclear materials. Enhancements to the system are implemented as the needs of the users are identified. The system has grown with the expanded needs of the user; and has survived several years of changing operations and activity. The user community served by this system includes processing, materials control and accountability, and nuclear material management personnel. In addition to serving the local users, the accountability system supports the national data base (NMMSS). This paper contains a discussion of several details of the system design and operation. After several years of successful operation, this system provides an operating example of how computer systems can be used to manage a very dynamic data management problem.

  19. Material accountancy for metallic fuel pin casting

    SciTech Connect (OSTI)

    Bucher, R.G.; Orechwa, Y.; Beitel, J.C.

    1995-08-01T23:59:59.000Z

    The operation of the Fuel Conditioning Facility (FCF) is based on the electrometallurgical processing of spent metallic reactor fuel. The pin casting operation, although only one of several operations in FCF, was the first to be on-line. As such, it has served to demonstrate the material accountancy system in many of its facets. This paper details, for the operation of the pin casting process with depleted uranium, the interaction between the mass tracking system (MTG) and some of the ancillary computer codes which generate pertinent information for operations and material accountancy. It is necessary to distinguish between two types of material balance calculations -- closeout for operations and material accountancy for safeguards. The two have much in common, for example, the mass tracking system database and the calculation of an inventory difference, but, in general, are not congruent with regard to balance period and balance spatial domain. Moreover, the objective, assessment, and reporting requirements of the calculated inventory difference are very different in the two cases.

  20. Air Temperature in the Undulator Hall

    SciTech Connect (OSTI)

    Not Available

    2010-12-07T23:59:59.000Z

    Various analyses have been performed recently to estimate the performance of the air conditioning (HVAC) system planned for the Undulator Hall. This reports summarizes the results and provides an upgrade plan to be used if new requirements are needed in the future. The estimates predict that with the planned loads the tunnel air temperature will be well within the allowed tolerance during normal operation.

  1. Truman STaTe univerSiTyWELCOME HOME! Air Conditioner

    E-Print Network [OSTI]

    Gering, Jon C.

    Truman STaTe univerSiTyWELCOME HOME! Air Conditioner Welcome toTruman State University air conditioner requests.If you need air conditioning and are assigned to Centennial,Grim,or Fair conditioning, you will need to bring your own air conditioner unit that is 6000 BTUs or less.A non

  2. Measured Impacts of Air Conditioner Condenser Shading

    E-Print Network [OSTI]

    Parker, D. S.; Barkaszi, S. F.; Sonne, J. K.

    1996-01-01T23:59:59.000Z

    A study has been conducted by the Florida Solar Energy Center (FSEC) to examine if space cooling energy savings can be achieved from shading of residential air conditioning (AC) condenser units. The investigation consisted of before...

  3. Metal-Air Batteries

    SciTech Connect (OSTI)

    Zhang, Jiguang; Bruce, Peter G.; Zhang, Gregory

    2011-08-01T23:59:59.000Z

    Metal-air batteries have much higher specific energies than most currently available primary and rechargeable batteries. Recent advances in electrode materials and electrolytes, as well as new designs on metal-air batteries, have attracted intensive effort in recent years, especially in the development of lithium-air batteries. The general principle in metal-air batteries will be reviewed in this chapter. The materials, preparation methods, and performances of metal-air batteries will be discussed. Two main metal-air batteries, Zn-air and Li-air batteries will be discussed in detail. Other type of metal-air batteries will also be described.

  4. Nuclear Material Control and Accountability

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2011-06-27T23:59:59.000Z

    This Order establishes performance objectives, metrics, and requirements for developing, implementing, and maintaining a nuclear material control and accountability program within DOE/NNSA and for DOE-owned materials at other facilities that are exempt from licensing by the Nuclear Regulatory Commission. Cancels DOE M 470.4-6. Admin Chg 1, 8-3-11.

  5. Human Capital Management Accountability Program

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2008-08-01T23:59:59.000Z

    The Order establishes requirements, roles and responsibilities for the Human Capital Management Accountability Program (HCMAP) for human resources programs and personnel and ensures that human capital activities are regulatory and procedurally compliant with Federal statutes and Departmental policies. Does not cancel other directives.

  6. Banner Advancement Account Request Form

    E-Print Network [OSTI]

    Karsai, Istvan

    Banner Advancement Account Request Form ETSU Office of Information Technology 424 Roy Nicks Hall, Box 70728 Johnson City, Tennessee 37614 (423) 439-4648 · oithelp@etsu.edu This section for use ______________________________________________________________________________________ [last] [first] [middle] ETSU Domain Name _____________________@etsu.edu School / College

  7. Aqueous Processing Material Accountability Instrumentation

    SciTech Connect (OSTI)

    Robert Bean

    2007-09-01T23:59:59.000Z

    Increased use of nuclear power will require new facilities. The U.S. has not built a new spent nuclear fuel reprocessing facility for decades. Reprocessing facilities must maintain accountability of their nuclear fuel. This survey report on the techniques used in current aqueous reprocessing facilities, and provides references to source materials to assist facility design efforts.

  8. Accounts Receivable Western Michigan University

    E-Print Network [OSTI]

    de Doncker, Elise

    Accounts Receivable Western Michigan University 1903 W. Michigan Avenue Kalamazoo, MI 49008 have read the Western Michigan University Third Party Billing Policy and agree to the terms. I am authorizing Western Michigan University to bill for the specified tuition and related fees for the term

  9. Accounts Receivable Western Michigan University

    E-Print Network [OSTI]

    de Doncker, Elise

    Accounts Receivable Western Michigan University 1903 W. Michigan Avenue Kalamazoo, MI 49008-5210 269 387-4251 Fax 269 387-4227 THIRD PARTY BILLING POLICY Western Michigan University (WMU# (269) 387-4227 Western Michigan University 1903 W. Michigan Avenue E-mail: wmu

  10. Exergy Analysis of Industrial Air Compression

    E-Print Network [OSTI]

    Bader, W. T.; Kissock, J. K.

    every industrial plant as a source of exergy for tools, actuators, and a myriad of manufacturing processes. For this analysis, a typical scenario is considered with a compressor installed indoors. Conditions for the indoor surroundings... are temperature T I and pressure Ph while the outdoor conditions, the environment, are To and Po. The compressor system is defined as the compressor, dryer (aftercooler) and compressed air distribution system (piping). We assume that the compressed air exits...

  11. Air temperature thresholds for indoor comfort and perceived air quality

    E-Print Network [OSTI]

    Zhang, Hui; Edward, Arens; Pasut, Wilmer

    2012-01-01T23:59:59.000Z

    system on perceived air quality, Indoor Air 2008, August 17-perception of indoor air quality during immediate and longeraddressing indoor air quality, thermal environment, lighting

  12. Air temperature thresholds for indoor comfort and perceived air quality

    E-Print Network [OSTI]

    Zhang, Hui; Edward, Arens; Pasut, Wilmer

    2012-01-01T23:59:59.000Z

    in the Netherlands, Indoor Air 2, 127 – 136. BuildingPaliaga, G. (2009) Moving air for comfort. ASHRAE Journal,ventilation system on perceived air quality, Indoor Air

  13. E-Print Network 3.0 - apheis project air Sample Search Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    to supply rooms with air that is "conditioned"--that is, heated or cooled... by the heating, ventilation, and air conditioning (HVAC) equipment--and to recirculate or return...

  14. air cooled heat: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Summary: was made against the two datasets recently downloaded from the California Energy Commission (CEC) database (CEC 2012) and the 2012 Air- Conditioning, Heating, and...

  15. air cooled htpem: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    absorptionAssessment of adsorber bed designs in waste-heat driven adsorption cooling systems for vehicle air conditioning and refrigeration Amir Sharafian, Majid Bahrami n...

  16. air cooled reactors: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    absorptionAssessment of adsorber bed designs in waste-heat driven adsorption cooling systems for vehicle air conditioning and refrigeration Amir Sharafian, Majid Bahrami n...

  17. air charter service: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    and Air Conditioning Su, Xiao 12 INTERNAL AUDIT CHARTER 1. Introduction Renewable Energy Websites Summary: Committee (ARMC) and should be read in conjunction with the ARMC...

  18. Savings Project: Insulate and Air Seal Floors Over Unconditioned...

    Energy Savers [EERE]

    barriers between an unconditioned garage and the conditioned spaces above can save energy and money, improve comfort, and safeguard indoor air quality. Your garage may be a...

  19. air passenger demand: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Websites Summary: 1 Aggregated Modeling and Control of Air Conditioning Loads for Demand Response Wei Zhang, Member, IEEE Abstract--Demand response is playing an...

  20. air cargo demand: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Websites Summary: 1 Aggregated Modeling and Control of Air Conditioning Loads for Demand Response Wei Zhang, Member, IEEE Abstract--Demand response is playing an...

  1. Case Western Reserve University Chart of Accounts

    E-Print Network [OSTI]

    Rollins, Andrew M.

    Case Western Reserve University Chart of Accounts July 7, 2004 1 ACCOUNTS 10000 - 199999 Asset of the following: ANN LON CIP OPR CSR OSA END PLT FHB RES INC SPC INS TRN All other SpeedTypes will populate the Account field for you. #12;Case Western Reserve University Chart of Accounts July 7, 2004 2 Asset Accounts

  2. Feasibility of air capture

    E-Print Network [OSTI]

    Ranjan, Manya

    2010-01-01T23:59:59.000Z

    Capturing CO2 from air, referred to as Air Capture, is being proposed as a viable climate change mitigation technology. The two major benefits of air capture, reported in literature, are that it allows us to reduce the ...

  3. Moving air for comfort

    E-Print Network [OSTI]

    Arens, Edward; Turner, Stephen; Zhang, Hui; Paliaga, Gwelen

    2009-01-01T23:59:59.000Z

    Brager, L. Zagreus. 2007, “Air movement preferences observed709-731. 9. Toftum, J. 2004. “Air movement – good or bad? ”Indoor Air 14, pp 40-45. 10. Gong, N. , K. Tham, A. Melikov,

  4. Arguments for an Alternative Account of Analyticity

    E-Print Network [OSTI]

    Sexton, Clark Alan

    2009-11-09T23:59:59.000Z

    This dissertation presents an alternative account of analyticity, as well as arguments for that account. Although an analysis and interpretation of previous accounts of analyticity are presented, the focus is on the analysis ...

  5. Air Pollution Control (Oklahoma)

    Broader source: Energy.gov [DOE]

    This chapter enumerates primary and secondary ambient air quality standards and the significant deterioration increments. Significant deterioration refers to an increase in ambient air pollution...

  6. Primary zone air proportioner

    DOE Patents [OSTI]

    Cleary, Edward N. G. (San Diego, CA)

    1982-10-12T23:59:59.000Z

    An air proportioner is provided for a liquid hydrocarbon fueled gas turbine of the type which is convertible to oil gas fuel and to coal gas fuel. The turbine includes a shell for enclosing the turbine, an air duct for venting air in said shell to a gasifier, and a fuel injector for injecting gasified fuel into the turbine. The air proportioner comprises a second air duct for venting air from the air duct for mixing with fuel from the gasifier. The air can be directly injected into the gas combustion basket along with the fuel from the injector or premixed with fuel from the gasifier prior to injection by the fuel injector.

  7. Nuclear Material Control and Accountability

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2011-06-27T23:59:59.000Z

    This Order establishes performance objectives, metrics, and requirements for developing, implementing, and maintaining a nuclear material control and accountability program within DOE/NNSA and for DOE-owned materials at other facilities that are exempt from licensing by the Nuclear Regulatory Commission. Cancels DOE M 470.4-6, Admin Chg 1, 8-26-05. Admin Chg 2, dated 11-19-12, cancels DOE M 474.2 Admin Chg 1.

  8. Nuclear Material Control and Accountability

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2011-06-27T23:59:59.000Z

    The Order establishes performance objectives, metrics, and requirements for developing, implementing, and maintaining a nuclear material control and accountability (MC&A) program within the U.S. Department of Energy (DOE), including the National Nuclear Security Administration (NNSA), and for DOE owned materials at other facilities that are exempt from licensing by the Nuclear Regulatory Commission (NRC). Admin Chg 3, dated 5-15-15 cancels Admin Chg 2.

  9. Stirling Air Conditioner for Compact Cooling

    SciTech Connect (OSTI)

    None

    2010-09-01T23:59:59.000Z

    BEETIT Project: Infinia is developing a compact air conditioner that uses an unconventional high efficient Stirling cycle system (vs. conventional vapor compression systems) to produce cool air that is energy efficient and does not rely on polluting refrigerants. The Stirling cycle system is a type of air conditioning system that uses a motor with a piston to remove heat to the outside atmosphere using a gas refrigerant. To date, Stirling systems have been expensive and have not had the right kind of heat exchanger to help cool air efficiently. Infinia is using chip cooling technology from the computer industry to make improvements to the heat exchanger and improve system performance. Infinia’s air conditioner uses helium gas as refrigerant, an environmentally benign gas that does not react with other chemicals and does not burn. Infinia’s improvements to the Stirling cycle system will enable the cost-effective mass production of high-efficiency air conditioners that use no polluting refrigerants.

  10. Impacts of Mixing on Acceptable Indoor Air Quality in Homes

    E-Print Network [OSTI]

    have central heating, ventilation, and air conditioning systems, which tend to mix the air; thus of Mixing on Acceptable Indoor Air Quality in Homes ABSTRACT Ventilation reduces occupant exposure to indoor different dilution rates and contaminant source strengths. The total ventilation rate is the most important

  11. Advanced Strategy Guideline: Air Distribution Basics and Duct Design

    SciTech Connect (OSTI)

    Burdick, A.

    2011-12-01T23:59:59.000Z

    This report discusses considerations for designing an air distribution system for an energy efficient house that requires less air volume to condition the space. Considering the HVAC system early in the design process will allow adequate space for equipment and ductwork and can result in cost savings. Principles discussed that will maximize occupant comfort include delivery of the proper amount of conditioned air for appropriate temperature mixing and uniformity without drafts, minimization of system noise, the impacts of pressure loss, efficient return air duct design, and supply air outlet placement, as well as duct layout, materials, and sizing.

  12. AiR surface: AiR surface 1

    E-Print Network [OSTI]

    Tanaka, Jiro

    AiR surface: 1 PDA AiR surface 1 1: AiR surface () () 2 [1] [2] 3 AiR surface AiR surface surface surface surface 3.1 surface [3]( 3 ) surface 3.2 surface surface AiR surface 4 AiR surface surface AiR surface: Virtual Touch Panel

  13. My Account | Critical Materials Institute

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighandSWPA / SPRA /Ml'.SolarUSAdvancedMuseum Day at0019 For moreMy Account

  14. NERSC Account Policies and Security

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your1 SECTIONES2008-54174MoreMuseum|NEESReadingAccounts »

  15. Air Pollution Spring 2010

    E-Print Network [OSTI]

    ATS 555 Air Pollution Spring 2010 T Th 11:00 ­ 12:15, NESB 101 Instructor: Prof. Sonia Kreidenweis an understanding of types and sources of air pollution. 2. Examine concentrations of air pollutants and their effects on health and welfare. Review regulations governing air pollution. 3. Examine the meteorological

  16. Simulation model air-to-air plate heat exchanger

    SciTech Connect (OSTI)

    Wetter, Michael

    1999-01-01T23:59:59.000Z

    A simple simulation model of an air-to-air plate heat exchanger is presented. The model belongs to a collection of simulation models that allows the eflcient computer simulation of heating, ventilation, and air-conditioning (HVAC) systems. The main emphasis of the models is to shorten computation time and to use only input data that are known in the design process of an HVAC system. The target of the models is to describe the behavior of HVAC components in the part-load operation mode, which is becoming increasingly important in energy eficient HVAC systems. The models are intended to be used for yearly energy calculations or load calculations with time steps of about 10 minutes or larger. Short- time dynamic effects, which are of interest for different aspects of control theory, are neglected. The part-load behavior is expressed in terms of the nominal condition and the dimensionless variation of the heat transfer with change of mass flow and temperature. The effectiveness- NTU relations are used to parametrize the convective heat transfer at nominal conditions and to compute the part-load condition. If the heat transfer coefficients on the two exchanger sides are not equal (i. e. due to partial bypassing of air), their ratio can be easily calculated and set as a parameter. The model is static and uses explicit equations only. The explicit model formulation ensures short computation time and numerical stability, which allows using the model with sophisticated engineering methods like automatic system optimization. This paper fully outlines the algorithm description and its simplifications. It is not tailored for any particular simulation program to ensure easy implementation in any simulation program.

  17. Reactive Air Aluminization

    SciTech Connect (OSTI)

    Choi, Jung-Pyung; Chou, Y. S.; Stevenson, Jeffry W.

    2011-10-28T23:59:59.000Z

    Ferritic stainless steels and other alloys are of great interest to SOFC developers for applications such as interconnects, cell frames, and balance of plant components. While these alloys offer significant advantages (e.g., low material and manufacturing cost, high thermal conductivity, and high temperature oxidation resistance), there are challenges which can hinder their utilization in SOFC systems; these challenges include Cr volatility and reactivity with glass seals. To overcome these challenges, protective coatings and surface treatments for the alloys are under development. In particular, aluminization of alloy surfaces offers the potential for mitigating both evaporation of Cr from the alloy surface and reaction of alloy constituents with glass seals. Commercial aluminization processes are available to SOFC developers, but they tend to be costly due to their use of exotic raw materials and/or processing conditions. As an alternative, PNNL has developed Reactive Air Aluminization (RAA), which offers a low-cost, simpler alternative to conventional aluminization methods.

  18. TRITIUM ACCOUNTANCY IN FUSION SYSTEMS

    SciTech Connect (OSTI)

    Klein, J. E.; Farmer, D. A.; Moore, M. L.; Tovo, L. L.; Poore, A. S.; Clark, E. A.; Harvel, C. D.

    2014-03-06T23:59:59.000Z

    The US Department of Energy (DOE) has clearly defined requirements for nuclear material control and accountability (MC&A) of tritium whereas the International Atomic Energy Agency (IAEA) does not since tritium is not a fissile material. MC&A requirements are expected for tritium fusion machines and will be dictated by the host country or regulatory body where the machine is operated. Material Balance Areas (MBAs) are defined to aid in the tracking and reporting of nuclear material movements and inventories. Material subaccounts (MSAs) are established along with key measurement points (KMPs) to further subdivide a MBA to localize and minimize uncertainties in the inventory difference (ID) calculations for tritium accountancy. Fusion systems try to minimize tritium inventory which may require continuous movement of material through the MSAs. The ability of making meaningful measurements of these material transfers is described in terms of establishing the MSA structure to perform and reconcile ID calculations. For fusion machines, changes to the traditional ID equation will be discussed which includes breading, burn-up, and retention of tritium in the fusion device. The concept of “net” tritium quantities consumed or lost in fusion devices is described in terms of inventory taking strategies and how it is used to track the accumulation of tritium in components or fusion machines.

  19. Air Conditioner Compressor Performance Model

    SciTech Connect (OSTI)

    Lu, Ning; Xie, YuLong; Huang, Zhenyu

    2008-09-05T23:59:59.000Z

    During the past three years, the Western Electricity Coordinating Council (WECC) Load Modeling Task Force (LMTF) has led the effort to develop the new modeling approach. As part of this effort, the Bonneville Power Administration (BPA), Southern California Edison (SCE), and Electric Power Research Institute (EPRI) Solutions tested 27 residential air-conditioning units to assess their response to delayed voltage recovery transients. After completing these tests, different modeling approaches were proposed, among them a performance modeling approach that proved to be one of the three favored for its simplicity and ability to recreate different SVR events satisfactorily. Funded by the California Energy Commission (CEC) under its load modeling project, researchers at Pacific Northwest National Laboratory (PNNL) led the follow-on task to analyze the motor testing data to derive the parameters needed to develop a performance models for the single-phase air-conditioning (SPAC) unit. To derive the performance model, PNNL researchers first used the motor voltage and frequency ramping test data to obtain the real (P) and reactive (Q) power versus voltage (V) and frequency (f) curves. Then, curve fitting was used to develop the P-V, Q-V, P-f, and Q-f relationships for motor running and stalling states. The resulting performance model ignores the dynamic response of the air-conditioning motor. Because the inertia of the air-conditioning motor is very small (H<0.05), the motor reaches from one steady state to another in a few cycles. So, the performance model is a fair representation of the motor behaviors in both running and stalling states.

  20. The role of colloidal particles on the migration of air bubbles in porous media

    E-Print Network [OSTI]

    Han, Ji-seok

    2009-05-15T23:59:59.000Z

    into account the movement of air bubbles and colloidal particle capture on discrete air-water interface. Generally colloidal particles are treated as suspended particles in the water, so the hypothesis is that the rising air bubble can collect the particles...

  1. Saving Energy in Industrial Compressed Air Systems: Issues and Obstacles in DSM Program Design

    E-Print Network [OSTI]

    Trojanowski, D.; Parfomak, P.

    contained compressed air systems.(I) Air compressors are generally driven by electric motors, often in large sizes and often operating continuously throughout the day. As a result, compressors can account for a substantial fraction of the electricity... consumption and peak demand in a given facility. A study by North Carolina A&T University found that air compressors accounted for as much as 49 % of base energy consumption, and up to 58% of peak electrical demand, in the facilities they audited.(2...

  2. Large interannual CO 2 and energy exchange variability in a freshwater marsh under consistent environmental conditions

    E-Print Network [OSTI]

    Rocha, Adrian V.; Goulden, Michael L.

    2008-01-01T23:59:59.000Z

    Environmental Conditions at the SJFM From 1999 to 2003 Year Air Temperature Average (Minimum, Maximum) (°C) Solar

  3. Effect of Return Air Leakage on Air Conditioner Performance in Hot/Humid Climates

    E-Print Network [OSTI]

    O'Neal, D. L.; Rodriguez, A.; Davis, M.; Kondepudi, S.

    1996-01-01T23:59:59.000Z

    were designed for testing systems with cooling capacities of up to 10 tons. The unit used for return air leakage tests was a 3.5 ton (12.3 kW) split system air conditioner with TXV expansion and a scroll compressor. It had a seasonal energy... leakage on capacity, power, and energy efficiency ratio (EER) of an air conditioner were quantified. The air conditioner was subjected to an outdoor temperature of 100°F (37.g°C). The indoor conditions for the no leakage test were set at 75OF (23.g...

  4. Accounting for the Occupancy Variable in Inverse Building Energy Baselining Models

    E-Print Network [OSTI]

    Claridge, D. E.

    2001-01-01T23:59:59.000Z

    .1-1989, Energy Efficient Design of New Buildings Except Low-Rise Residential Buildings. American Society of Heating, Refrigerating and Air-conditioning Engineers. Atlanta, Georgia. Bronson, D., 1992, ?Calibrated Computer Simulations for the Analysis of Retrofit...

  5. Air Quality: Monthly Hazardous Material Use, Fuel Consumption, and Equipment Operation Forms

    E-Print Network [OSTI]

    Wechsler, Risa H.

    Air Quality: Monthly Hazardous Material Use, Fuel Consumption, and Equipment Operation Forms Department: Chemical and General Safety Program: Air Quality Owner: Program Manager Authority: ES&H Manual, Chapter 30, Air Quality1 The conditions of SLAC's air quality permits specify that all subject hazardous

  6. General Air Permits (Louisiana)

    Broader source: Energy.gov [DOE]

    Any source, including a temporary source, which emits or has the potential to emit any air contaminant requires an air permit. Facilities with potential emissions less than 5 tons per year of any...

  7. Healthy Air Act (Maryland)

    Broader source: Energy.gov [DOE]

    The Maryland Healthy Air Act was developed with the purpose of bringing Maryland into attainment with the National Ambient Air Quality Standards (NAAQS) for ozone and fine particulate matter by the...

  8. Compressed Air Supply Efficiency 

    E-Print Network [OSTI]

    Joseph, B.

    2004-01-01T23:59:59.000Z

    COMPRESSED AIR SUPPLY EFFICENCY Babu Joseph, Ph.D., P.E. Engineer Southern California Edison Irwindale, CA ABSTRACT This project, under contract from California Energy Commission, developed the CASE (Compressed Air Supply Efficiency...

  9. Preparing for Project Implementation Assigning Accountability...

    Broader source: Energy.gov (indexed) [DOE]

    Assigning Accountability for Each Project (April 14, 2010) More Documents & Publications Preparing for Project Implementation after an Energy Assessment...

  10. on man, nature & air pollution

    E-Print Network [OSTI]

    Finlayson-Pitts, Barbara J

    2008-01-01T23:59:59.000Z

    on man, nature & air pollution About three decades ago, itand episodes of air pollution the following summer. Wetthe increase in air pollution. This hypothesis generated

  11. Ventilation Air Preconditioning Systems

    E-Print Network [OSTI]

    Khattar, M.; Brandemuehl, M. J.

    1996-01-01T23:59:59.000Z

    simply and cost-effectively with a dual path arrangement that treats and controls the ventilation air independently of the recirculation air. The Electric Power Research Institute (EPRI)--the nonprofit R&D arm of the electric utility industry... particular type of application. EPRI is developing variations of the dual path concept to meet different reeofit and new construction markets. Figure 6. Ventilation Air Conditioner as a Separate Unit EPRVCALMAC System: Separate Unit for Ventilation Air...

  12. Rev. 7-2010 New Agreement Change Account Cancel Agreement

    E-Print Network [OSTI]

    Account Savings Account Financial Institution: Name _____________________________________ Branch for checking accounts OR savings deposit slip for savings accounts Form will not be processed without

  13. Your UNIX Account Basic Unix Tools

    E-Print Network [OSTI]

    Qiu, Weigang

    Your UNIX Account 2 Basic Unix Tools 3 Unix Power Tools Weigang Qiu Introduction & UNIX Tutorial #12 & UNIX Tutorial #12;Your UNIX Account Basic Unix Tools Unix Power Tools UNIX Directory Structure FileYour UNIX Account Basic Unix Tools Unix Power Tools Introduction & UNIX Tutorial Weigang Qiu

  14. MAD-AIR

    E-Print Network [OSTI]

    Tooley, J. J.; Moyer, N. A.

    1989-01-01T23:59:59.000Z

    with stress- related illness rather than the anwr that spells RELIEF. Air flow in, through ad arourd a house is an important concern in the building we call haw. !lb enhance air flow and change the various corditions or properties of the air, a variety...

  15. Air Quality Chapter Outline

    E-Print Network [OSTI]

    Wechsler, Risa H.

    Chapter 30 Air Quality Chapter Outline 1 Overview 2 1.1 Hazards / Impacts 2 1.2 Exposure Sources 3 Manual Chapter 30: Air Quality 7 References 20 8 Implementation 21 9 Ownership 22 1 Overview SLAC operations produce a wide range of air emissions. Sources of emissions include standard equipment

  16. An Index for Evaluation of Air Quality Improvement in Rooms with Personalized Ventilation Based on Occupied Density and Normalized Concentration

    E-Print Network [OSTI]

    Schiavon, Stefano; Melikov, Arsen; Cermak, Radim; De Carli, Michele; Li, Xianting

    2007-01-01T23:59:59.000Z

    Journal of heating, Ventilation and Refrigeration Research,on Cold Climate, Heating, Ventilation and Air-Conditioning,

  17. Air Handling Unit Supply Air Temperature Optimization During Economizer Cycles

    E-Print Network [OSTI]

    Xu, K.; Liu, M.; Wang, G.; Wang, Z.

    2007-01-01T23:59:59.000Z

    temperature at supply air temperature setpoint. Mechanical cooling is always required when outside air temperature is higher than the supply air temperature setpoint. Generally the supply air temperature setpoint is set at 55°F for space humidity control...

  18. Implications of a stochastic approach to air-quality regulations

    SciTech Connect (OSTI)

    Witten, A.J.; Kornegay, F.C.; Hunsaker, D.B. Jr.; Long, E.C. Jr.; Sharp, R.D.; Walsh, P.J.; Zeighami, E.A.; Gordon, J.S.; Lin, W.L.

    1982-09-01T23:59:59.000Z

    This study explores the viability of a stochastic approach to air quality regulations. The stochastic approach considered here is one which incorporates the variability which exists in sulfur dioxide (SO/sub 2/) emissions from coal-fired power plants. Emission variability arises from a combination of many factors including variability in the composition of as-received coal such as sulfur content, moisture content, ash content, and heating value, as well as variability which is introduced in power plant operations. The stochastic approach as conceived in this study addresses variability by taking the SO/sub 2/ emission rate to be a random variable with specified statistics. Given the statistical description of the emission rate and known meteorological conditions, it is possible to predict the probability of a facility exceeding a specified emission limit or violating an established air quality standard. This study also investigates the implications of accounting for emissions variability by allowing compliance to be interpreted as an allowable probability of occurrence of given events. For example, compliance with an emission limit could be defined as the probability of exceeding a specified emission value, such as 1.2 lbs SO/sub 2//MMBtu, being less than 1%. In contrast, compliance is currently taken to mean that this limit shall never be exceeded, i.e., no exceedance probability is allowed. The focus of this study is on the economic benefits offered to facilities through the greater flexibility of the stochastic approach as compared with possible changes in air quality and health effects which could result.

  19. Security Conditions

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2004-07-08T23:59:59.000Z

    This Notice ensures that DOE uniformly meets the requirements of the Homeland Security Advisory System outlined in Homeland Security Presidential Directive-3, Threat Conditions and Associated Protective Measures, dated 3-11-02, and provides responses specified in Presidential Decision Directive 39, U.S. Policy on Counterterrorism (U), dated 6-21-95. It cancels DOE N 473.8, Security Conditions, dated 8-7-02. Extended until 7-7-06 by DOE N 251.64, dated 7-7-05 Cancels DOE N 473.8

  20. Air to Air Communication Protocol Arjan Durresi1

    E-Print Network [OSTI]

    Jain, Raj

    1 Air to Air Communication Protocol Arjan Durresi1 , Vamsi Paruchuri1 , Leonard Barolli2 and Raj. Louis, MO 63130, USA 314-935-4963, jain@cse.wustl.edu Abstract--We present Air to Air Communication (AAC........................................................2 3. AIR TO AIR COMMUNICATION..............................3 4. SIMULATIONS

  1. Air Pollution- Local Air Quality (Ontario, Canada)

    Broader source: Energy.gov [DOE]

    The Air Pollution regulation administered by the Ministry of the Environment enforces compliance to the standards set in the Ontario law. The law is phased in, with portions taking effect in 2010,...

  2. Optimizing near real time accountability for reprocessing.

    SciTech Connect (OSTI)

    Cipiti, Benjamin B.

    2010-06-01T23:59:59.000Z

    Near Real Time Accountability (NRTA) of actinides at high precision in reprocessing plants has been a long sought-after goal in the safeguards community. Achieving this goal is hampered by the difficulty of making precision measurements in the reprocessing environment, equipment cost, and impact to plant operations. Thus the design of future reprocessing plants requires an optimization of different approaches. The Separations and Safeguards Performance Model, developed at Sandia National Laboratories, was used to evaluate a number of NRTA strategies in a UREX+ reprocessing plant. Strategies examined include the incorporation of additional actinide measurements of internal plant vessels, more use of process monitoring data, and the option of periodic draining of inventory to key tanks. Preliminary results show that the addition of measurement technologies can increase the overall measurement uncertainty due to additional error propagation, so care must be taken when designing an advanced system. Initial results also show that relying on a combination of different NRTA techniques will likely be the best option. The model provides a platform for integrating all the data. The modeling results for the different NRTA options under various material loss conditions will be presented.

  3. CFD Simulation and Measurement Validation of Air Distribution at the Hunan International Exhibition Center

    E-Print Network [OSTI]

    Deng, T.; Zhang, Q.; Zhang, G.; Yuan, H.

    2006-01-01T23:59:59.000Z

    The Hunan International Exhibition Center (HIEC) is a large space building. A stratified air-conditioning system on the second floor of the building has been adopted. Due to some problems with the air supply jet diffuser, CFD simulations were...

  4. Laboratory Test Report for ThermaStor Ultra-Aire XT150H Dehumidifier

    SciTech Connect (OSTI)

    Christensen, D.; Winkler, J.

    2009-12-01T23:59:59.000Z

    This report documents the performance of the ThermaStor Ultra-Aire XT150H Dehumidifier. Its performance was measured across a wide range of inlet air conditions and fit to a numerical model.

  5. CFD Simulation and Measurement Validation of Air Distribution at the Hunan International Exhibition Center 

    E-Print Network [OSTI]

    Deng, T.; Zhang, Q.; Zhang, G.; Yuan, H.

    2006-01-01T23:59:59.000Z

    The Hunan International Exhibition Center (HIEC) is a large space building. A stratified air-conditioning system on the second floor of the building has been adopted. Due to some problems with the air supply jet diffuser, CFD simulations were...

  6. Double Ended Guillotine Break in a Prismatic Block VHTR Lower Plenum Air Ingress Scenario 

    E-Print Network [OSTI]

    Hartley, Jessica

    2012-10-19T23:59:59.000Z

    and is composed of graphite. During an air ingress event, oxidation of the graphite structure under high temperature conditions in an oxygen containing environment could degrade the integrity of the core support structure. Following this large break, air from...

  7. Air-Con International: Order (2010-SE-0301) | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    10,000 civil penalty after finding Air-Con had imported and distributed in commerce in the U.S. various models of air-conditioning units. The Order adopted a Compromise Agreement,...

  8. Optimization of supply air temperature reset schedule for a single duct VAV systems

    E-Print Network [OSTI]

    Fan, Wenshu

    2009-05-15T23:59:59.000Z

    In a single duct variable air volume (SDVAV) system, the supply air temperature is usually set as a constant value. Since this constant setpoint is selected to satisfy the maximum cooling load conditions, significant reheat will occur once...

  9. Analysis of a unilateral contact problem taking into account adhesion and friction

    E-Print Network [OSTI]

    Rossi, Riccarda

    Analysis of a unilateral contact problem taking into account adhesion and friction Elena Bonetti) adhesion and of the friction are taken into account. We describe the adhesion phenomenon in terms conditions and the friction by a nonlocal Coulomb law. All the constraints on the internal variables as well

  10. Analysis of a unilateral contact problem taking into account adhesion and friction

    E-Print Network [OSTI]

    Rossi, Riccarda

    Analysis of a unilateral contact problem taking into account adhesion and friction Elena Bonetti) adhesion and of the friction are taken into account. We describe the adhesion phenomenon in terms conditions, and friction by a nonlocal Coulomb law. All the constraints on the internal variables as well

  11. ATHENA Student Account Refund Profile ATHENA Student Account Refund Profile Setup

    E-Print Network [OSTI]

    Hall, Daniel

    ATHENA Student Account Refund Profile ATHENA Student Account Refund Profile Setup What is a Refund Profile? UGA allows for online viewing and refunding of a student's account for payments and Financial Aid up a Refund Profile? Refunds that you receive can be direct deposited into the bank account of your

  12. Why do poor people demand accountability from some participatory programs and not others?

    E-Print Network [OSTI]

    Serrano Berthet, Rodrigo

    2005-01-01T23:59:59.000Z

    There is a consensus that citizen oversight, or the capacity of citizens to demand accountability, over government programs improves program performance. Yet little is known about the conditions that enable citizens/beneficiaries ...

  13. Air flow characteristics of dry and liquid loaded packed and fluidized systems

    E-Print Network [OSTI]

    Millsap, George Wayne

    1958-01-01T23:59:59.000Z

    Acknowledgnent s List of Tables List of Figures Introduction Description of s Fluidised Bed Obgectives Application 1 2 3 Description of Apparatus Test Procedure Preparation of Bed Material Beds With Upward Flow of Air Beds With Upward Flow of Air... obgectives of thi ~ investigation were: (1) to deternine the air flow-pressure drop relationships in a dry bed of unifornly sised spherical particles in both the packed and fluidised regines of air flow; (3) to deternine under the sane air flow conditions...

  14. Air-Con International: Order (2010-SE-0301)

    Broader source: Energy.gov [DOE]

    DOE ordered Air-Con International, Inc. to pay a civil penalty of $10,000 after finding Air-Con had distributed in commerce in the U.S. central air conditioning units that were not in conformity with the applicable energy conservation standards. DOE also found that, while some units were exported, none of the units were properly marked as imports intended for exportation.

  15. Air Pollution Control (Indiana)

    Broader source: Energy.gov [DOE]

    The mission of the Indiana Department of Environmental Management's Office of Air Quality implements federal and state regulations to protect human health and the environment while allowing the...

  16. Air Pollution Controls

    Broader source: Energy.gov [DOE]

    Various statutes within the Wisconsin Legislative Documents relate to air pollution control. These statutes describe zoning, permitting, and emissions regulations for hazardous and non-hazardous...

  17. Personal continuous air monitor

    DOE Patents [OSTI]

    Morgan, Ronald G. (Los Alamos, NM); Salazar, Samuel A. (Albuquerque, NM)

    2000-01-01T23:59:59.000Z

    A personal continuous air monitor capable of giving immediate warning of the presence of radioactivity has a filter/detector head to be worn in the breathing zone of a user, containing a filter mounted adjacent to radiation detectors, and a preamplifier. The filter/detector head is connected to a belt pack to be worn at the waist or on the back of a user. The belt pack contains a signal processor, batteries, a multichannel analyzer, a logic circuit, and an alarm. An air pump also is provided in the belt pack for pulling air through the filter/detector head by way of an air tube.

  18. Environmental Quality: Air (Louisiana)

    Broader source: Energy.gov [DOE]

    The Department of Environmental Quality regulates air quality in Louisiana. The Department has an established a fee system for funding the monitoring, investigation and other activities required...

  19. Electric, Gas, and Electric/Gas Energy Options for Cold-Air HVAC Systems 

    E-Print Network [OSTI]

    Meckler, G.

    1989-01-01T23:59:59.000Z

    is distributed at 53" to 58OF from the central plant via integrated sprinkler piping. FICUs, illustrated in Figure 1, sensibly cool recirculated air as required, mix it with the 40°F ventilation air, and supply the mixed air at a constant volume. Figure 1.... Key: 80 1. Outside air enlaring enthalpy wheel, 91'FDE. 76'FWB. 2. Outside air leaving enlhalpy wheel. BI'FDB, 68qr. 3. Primary air leaving supply fan. 8SFDB. 68gr. 4. Primary air leaving ice cail. 4UFDB. 36qr.. sat. 5, Room condition. 7SFDE. 4O...

  20. Air exchange effectiveness of conventional and task ventilation for offices

    SciTech Connect (OSTI)

    Fisk, W.J.; Faulkner, D.; Prill, R.J.

    1991-12-01T23:59:59.000Z

    Air quality and comfort complaints within large buildings are often attributed to air distribution problems. We define three air exchange effectiveness parameters related to air distribution. The first two indicate the indoor air flow pattern (i.e., the extent of short circuiting, mixing, or displacement flow) for an entire building or region. The third parameter is most useful for assessments of the spatial variability of ventilation. We also define the air diffusion effectiveness which indicates the air flow pattern within specific rooms or sections of buildings. The results of measurements of these parameters in US office buildings by the authors and other researchers are reviewed. Almost all measurements indicate very limited short circuiting or displacement flow between locations of air supply and removal. However, a moderate degree of short circuiting is evident from a few measurements in rooms with heated supply air. The results of laboratory-based measurements by the authors are consistent with the field data. Our measurements in office buildings do indicate that ventilation rates can vary substantially between indoor locations, probably due to variation in air supply rates between locations rather than variation in the indoor air flow patterns. One possible method of improving air distribution is to employ task ventilation with air supplied closer to the occupant`s breathing zone. We have evaluated two task ventilation systems in a laboratory setting. During most operating conditions, these systems did not provide a region of substantially increased ventilation where occupants breath. However, both systems are capable of providing substantially enhanced ventilation at the breathing zone under some operating conditions. Therefore, task ventilation is a potential option for using ventilation air more effectively.

  1. Air exchange effectiveness of conventional and task ventilation for offices

    SciTech Connect (OSTI)

    Fisk, W.J.; Faulkner, D.; Prill, R.J.

    1991-12-01T23:59:59.000Z

    Air quality and comfort complaints within large buildings are often attributed to air distribution problems. We define three air exchange effectiveness parameters related to air distribution. The first two indicate the indoor air flow pattern (i.e., the extent of short circuiting, mixing, or displacement flow) for an entire building or region. The third parameter is most useful for assessments of the spatial variability of ventilation. We also define the air diffusion effectiveness which indicates the air flow pattern within specific rooms or sections of buildings. The results of measurements of these parameters in US office buildings by the authors and other researchers are reviewed. Almost all measurements indicate very limited short circuiting or displacement flow between locations of air supply and removal. However, a moderate degree of short circuiting is evident from a few measurements in rooms with heated supply air. The results of laboratory-based measurements by the authors are consistent with the field data. Our measurements in office buildings do indicate that ventilation rates can vary substantially between indoor locations, probably due to variation in air supply rates between locations rather than variation in the indoor air flow patterns. One possible method of improving air distribution is to employ task ventilation with air supplied closer to the occupant's breathing zone. We have evaluated two task ventilation systems in a laboratory setting. During most operating conditions, these systems did not provide a region of substantially increased ventilation where occupants breath. However, both systems are capable of providing substantially enhanced ventilation at the breathing zone under some operating conditions. Therefore, task ventilation is a potential option for using ventilation air more effectively.

  2. Biomass Supply and Carbon Accounting for

    E-Print Network [OSTI]

    Biomass Supply and Carbon Accounting for Southeastern Forests February 2012 #12;This Biomass Supply and Carbon Accounting for Southeastern Forests study was conducted by the Biomass Energy Resource Center Biomass Energy Resource Center Kamalesh Doshi Biomass Energy Resource Center Hillary Emick Biomass Energy

  3. l ProteinDF : account / password

    E-Print Network [OSTI]

    Fukai, Tomoki

    #12;FOCUS 3 #12;FOCUS l SSL-VPN ­: account / password l sshssh.j-focus.jp ­: account / password 4 SSL-VPN ssh batch ssh.j-focus.jp E #12;SSL-VPN l : http://www.j-focus.jp/sslvpn/ ­ Cisco AnyConnect Secure

  4. Case Western Reserve University Chart of Accounts

    E-Print Network [OSTI]

    Rollins, Andrew M.

    Case Western Reserve University Chart of Accounts July 7, 2004 1 SPEEDTYPE / PROJECT PREFIXES Funds PLT Plant CIP Construction in Progress #12;Case Western Reserve University Chart of Accounts July Annual Fund Gift RES Research TRN Training SPC Special Programs/Projects OSA Other Sponsored Activities

  5. OKLAHOMA STATE Report of Independent Accountants' Application

    E-Print Network [OSTI]

    Veiga, Pedro Manuel Barbosa

    OKLAHOMA STATE UNIVERSITY Report of Independent Accountants' Application of Agreed-Upon Procedures to Assist the University in Complying with NCAA Bylaws 6.2.3.1 Year Ended June 30, 2007 #12;OKLAHOMA STATE.2.3.1 .......................................................................................................................................... 1 Intercollegiate Athletics Program Accounts of Oklahoma State University and the Oklahoma State

  6. TRINITY HALL ACCOUNTS FOR THE YEAR ENDED

    E-Print Network [OSTI]

    Talbot, James P.

    TRINITY HALL CAMBRIDGE ACCOUNTS FOR THE YEAR ENDED 30 June 2011 #12;TRINITY HALL Index Balance Sheet 19 Cash Flow Statement 20 - 32 Notes to the Accounts #12;TRINITY HALL Governing Body;Status Trinity Hall, or The Master, Fellows and Scholars of the College or Hall of the Holy Trinity

  7. Low Temperature Air Bake of Stainless Steel for Very Low

    E-Print Network [OSTI]

    that gives very hot water with detergent. #12;4. The method of using a relatively low temperature air bake of the requirements for high quality forged blanks for flanges. After machining using a water based lubricantLow Temperature Air Bake of Stainless Steel for Very Low Outgassing Rates Surface Conditioning

  8. Current collectors for rechargeable Li-Air batteries

    SciTech Connect (OSTI)

    Veith, Gabriel M [ORNL; Dudney, Nancy J [ORNL

    2011-01-01T23:59:59.000Z

    Here we report the negative influence of porous nickel foam for use as current collectors in rechargeable Li-air batteries. Uncoated nickel foam promotes the decomposition of LiPF6-organic carbonate electrolytes under normal charging conditions reported for rechargeable Li-air cells. We have identified Ni free porous carbon supports as more appropriate cathode current collectors.

  9. Load-side Demand Management in Buildings using Controlled Electric Springs

    E-Print Network [OSTI]

    Soni, Jayantika; Krishnanand, KR; Panda, Sanjib

    2014-01-01T23:59:59.000Z

    Fig. 1 [10]. As air conditioning accounts for 50% of energybuilding, the central air conditioning system can be used asloads like central air conditioning system, to demonstrate

  10. AIR SEALING Seal air leaks and save energy!

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    AIR SEALING Seal air leaks and save energy! W H A T I S A I R L E A K A G E ? Ventilation is fresh air that enters a house in a controlled manner to exhaust excess moisture and reduce odors and stuffiness. Air leakage, or infiltration, is outside air that enters a house uncontrollably through cracks

  11. Air Quality: Air Pollutants, SLAC Emissions Sources, and Regulatory Reference

    E-Print Network [OSTI]

    Wechsler, Risa H.

    Air Quality: Air Pollutants, SLAC Emissions Sources, and Regulatory Reference Department: Chemical and General Safety Program: Air Quality Owner: Program Manager Authority: ES&H Manual, Chapter 30, Air Quality1 SLAC's air emissions are regulated through a federally mandated site-wide permit as well

  12. Application of environmental accounting to pollution prevention

    SciTech Connect (OSTI)

    Del Mar, R.A.

    1997-08-19T23:59:59.000Z

    Environmental accounting represents a major paradigm shift in the way most companies account for costs and benefits. However, it is a change that must be made if pollution prevention is to become institutionalized into the corporate and government mainstream. Pollution prevention investments must be justified on an economic basis; without environmental accounting tools, pollution prevention investments cannot show their true profitability. This is because traditional accounting methods only track billable costs, thus ignoring some of the major benefits of pollution prevention investments, which are indirect savings resulting from a lessening of a company`s regulatory compliance burden and present and future liabilities. This paper discusses how to apply environmental accounting principles to pollution prevention assessments to improve the outcome of profitability analyses.

  13. air ambient temperature: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    It not only impacts the thermal comfort of occupants, but also also greatly affects the energy consumption in air conditioning systems. The lower the indoor... Yao, Y.; Lian, Z.;...

  14. ambient air temperature: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    It not only impacts the thermal comfort of occupants, but also also greatly affects the energy consumption in air conditioning systems. The lower the indoor... Yao, Y.; Lian, Z.;...

  15. air force office: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Does not include Office of Health Sciences and College Howat, Ian M. 91 Proposal for an Adsorption Solar-Driven Air-Conditioning Unit for Public Offices Texas A&M University -...

  16. air force officer: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Does not include Office of Health Sciences and College Howat, Ian M. 91 Proposal for an Adsorption Solar-Driven Air-Conditioning Unit for Public Offices Texas A&M University -...

  17. A systems analysis of scheduled air transportation networks

    E-Print Network [OSTI]

    Swan, William M.

    1979-01-01T23:59:59.000Z

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

  18. air water interfaces: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    O; Westerhoff, S; Williams, D A; Yang, T; Yodh, G B 1999-01-01 198 Economic Analysis of a Waste Water Resource Heat Pump Air-Conditioning System in North China Texas A&M University...

  19. air defense system: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    system. Much is now known about the post-September Wang, Hai 377 Numerical Analysis of Heat and Moisture Transfer in Underground Air-conditioning Systems Texas A&M University -...

  20. air defense systems: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    system. Much is now known about the post-September Wang, Hai 377 Numerical Analysis of Heat and Moisture Transfer in Underground Air-conditioning Systems Texas A&M University -...

  1. Compressed Air System Optimization

    E-Print Network [OSTI]

    Aegerter, R.

    Several years ago I went to a gas station and noticed that my car's tires were low on air. I saw the gas station had an air compressor, but it cost a quarter to use the compressor. I paid my quarter and used the compressor. I realized...

  2. Recirculating electric air filter

    DOE Patents [OSTI]

    Bergman, W.

    1985-01-09T23:59:59.000Z

    An electric air filter cartridge has a cylindrical inner high voltage electrode, a layer of filter material, and an outer ground electrode formed of a plurality of segments moveably connected together. The outer electrode can be easily opened to remove or insert filter material. Air flows through the two electrodes and the filter material and is exhausted from the center of the inner electrode.

  3. The CitiSense Air Quality Monitoring Mobile Sensor Node Piero Zappi, Elizabeth Bales, Jing Hong Park, William Griswold and Tajana Simuni Rosing

    E-Print Network [OSTI]

    Simunic, Tajana

    conditions than the national ambient air quality standard [1]. Current air pollutant measurement networks. For example, The San Diego Air Pollution Control District (SDAPCD) maintains only five air pollutant samplingThe CitiSense Air Quality Monitoring Mobile Sensor Node Piero Zappi, Elizabeth Bales, Jing Hong

  4. Indoor design condition and the cooling load calculation

    SciTech Connect (OSTI)

    Sun, T.Y. [Sun (Tseng-Yao), Rancho Palos Verde, CA (United States)

    1997-12-01T23:59:59.000Z

    Cooling load calculation involves two steps. The first is to determine the basic building load. This consists of external loads through the building envelope and internal loads from people, lights, appliances, and other heat sources. The required supply air quantity for each conditioned space generally is determined in the first step. This is because each relates only to the coil leaving and required room dry bulb temperatures (unless reheat is required to control the humidity level in the conditioned space). The second step, after completing the above, is to calculate the system cooling load. This step adapts the selected air distribution system to the building load and involves the introduction of the required outdoor air volume into the air conditioning system for ventilation. Proper psychrometric analysis is required to calculate the entering and leaving wet bulb conditions of the air passing through the cooling coil. These, together with the corresponding dry bulb temperatures, will determine the system cooling load.

  5. account positioning errors: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Websites Summary: analysis and providing assistance to division Financial Analysts. ?Support Finance group in General Accounting functions including accounts payable, accounts...

  6. Simulation- Assisted Audit of an Air Conditioned Office Building

    E-Print Network [OSTI]

    Bertagnolio, S.; Lebrun, J.; Hannay, J.; Silva, C. A.

    , an equation-based building-HVAC simulation tool is used to assist the audit. Fuel and electricity consumption are then interpreted and significant energy saving opportunities are identified....

  7. K-7109Agnew Hall M-2204Air Conditioning Plant

    E-Print Network [OSTI]

    Buehrer, R. Michael

    Building] K-4171Burchard Hall L-4176Burruss Hall L-637Campbell Hall - East Wing L-636Campbell Hall - Main Center at Donaldson Brown L-9124Greenhouse Q-10 241Grounds Building (Central Stores) J-4 158Hahn Hall

  8. Direct Digital Control in Air Conditioning Systems for Energy Efficiency

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    With the rapid development of Intelligent Buildings (IB), the Building Automation System (BAS) has come to control and manage the equipment in the building more and more scientifically, economically and rationally, which can not only raise...

  9. Desiccants: Benefits for the Second Century of Air-Conditioning

    E-Print Network [OSTI]

    McGahey, K.; Harriman, L.

    1996-01-01T23:59:59.000Z

    Desiccant technology now stands where mechanical cooling stood in the 1930's. Desiccant systems have been used by industrial engineers to achieve productivity and energy benefits which far outweigh their installed cost. Now, with lower cost...

  10. air conditioning plants: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    - TxSpace Summary: The primarysecondary piping systems are often employed in large chiller plant Systems. Normally, the primary flow becomes more than secondary flow, and...

  11. air conditioning applications: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    chillers use the most environmentally friendly refrigerant - water... the Absorption. chiller. If a million Btulshr of hot water can be used from the heat of the engine, at...

  12. air conditioning fuel: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 440 2. Adsorption versus absorptionAssessment of adsorber bed designs in waste-heat driven...

  13. air conditioning plant: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    - TxSpace Summary: The primarysecondary piping systems are often employed in large chiller plant Systems. Normally, the primary flow becomes more than secondary flow, and...

  14. RHEOLOGICAL STUDY OF AN HYDRATE SLURRY FOR AIR CONDITIONNING APPLICATION

    E-Print Network [OSTI]

    Boyer, Edmond

    [-] INTRODUCTION In the context of the classical refrigerants phase out, phase change materials (PCM) arouse great interests. Indeed, for very low temperature application such as refrigeration, ice-slurries are spread as secondary refrigerants. Concerning hydrates, they have been used as PCM for cold storage for years

  15. Direct Digital Control in Air Conditioning Systems for Energy Efficiency 

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    connected by lines that represent the data flow. The process is depicted with symbols as on electrical schematics and pneumatic control diagrams. Graphical diagrams are created and the detailed data is entered in background menus or screens... and control system Energy management and control system (EMCS) technology has evolved over the past three decades from pneumatic and mechanical devices to direct digital controls (DDC) or computer-based controllers and systems. Today's EMCS systems...

  16. Energy Conservation of Air Conditioning Systems in Large Public Buildings 

    E-Print Network [OSTI]

    Liu, P.; Li, D.

    2006-01-01T23:59:59.000Z

    chart and the pipeline performance chart. Don?t choose the oversize flux and the oversize delivery lift pumps. If the oversize model of the pumps is chosen, most of the valves in the outlet conduit will be semi-open, which can increase...

  17. air conditioning hvac: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    humidity and other environmental parameters for the occupants as well as to save energy. Achieving these objectives requires a suitable control system design. Approach: In...

  18. air conditioning maintenance: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    the transient evolution of the free surface surrounding the impact region of a low-viscosity laminar liquid jet as it enters a quiescent pool. The close-up images depict the...

  19. Control of Computer Room Air Conditioning using IT Equipment Sensors

    E-Print Network [OSTI]

    Bell, Geoffrey C.

    2010-01-01T23:59:59.000Z

    to control the cooling system in the data center, energyfor input to the data center cooling system devices. Goal 2:for input to the data center cooling system devices. See

  20. Control of Computer Room Air Conditioning using IT Equipment Sensors

    E-Print Network [OSTI]

    Bell, Geoffrey C.

    2010-01-01T23:59:59.000Z

    graphics that allowed facility operators to choose which server temperature data points were used for control.graphics that allowed facility operators to choose which server temperature data points were used for control.