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

Room Air Conditioners  

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

of Superefficient Room Air Conditioners year month keywords appliance energy efficiency energy efficiency incentives Market Transformation standards url https isswprod lbl gov...

2

Room Air Conditioners | Department of Energy  

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

Room Air Conditioners Room Air Conditioners Room Air Conditioners July 1, 2012 - 5:35pm Addthis A window air conditioner is one solution to cooling part of a house. | Photo courtesy of ©iStockphoto/kschulze. A window air conditioner is one solution to cooling part of a house. | Photo courtesy of ©iStockphoto/kschulze. What does this mean for me? Room air conditioners are less expensive and disruptive to install than central air conditioning systems. Room air conditioners can be a cost-effective alternative to central air conditioning systems. How does it work? Room air conditioners work by cooling one part of your home. Room or window air conditioners cool rooms rather than the entire home or business. If they provide cooling only where they're needed, room air conditioners are less expensive to operate than central units, even though

3

Room Air Conditioners | Department of Energy  

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

you need to mount the air conditioner at the narrow end of a long room, then look for a fan control known as "Power Thrust" or "Super Thrust" that sends the cooled air farther...

4

Evaluation of Energy-Efficiency Standards for Room Air Conditioners...  

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

Energy-Efficiency Standards for Room Air Conditioners in the US Title Evaluation of Energy-Efficiency Standards for Room Air Conditioners in the US Publication Type Journal Article...

5

Building Energy Software Tools Directory: Room Air Conditioner Cost  

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

Room Air Conditioner Cost Estimator Room Air Conditioner Cost Estimator Screen capture of Room Air Conditioner Cost Estimator The cost estimator compares high-efficiency room air conditioners to standard equipment in terms of life cycle cost. It provides an alternative to complicated building simulation models, while offering more precision than simplified estimating tools that are commonly available. The cost estimator assists decision-making regarding the purchase or replacement of room air conditioning equipment, by estimating a product�s lifetime energy cost savings at various efficiency levels. Screen Shots Keywords air conditioner, life-cycle cost, energy performance, residential buildings, energy savings Validation/Testing Internal reviews at Pacific Northwest National Laboratory.

6

ENERGY STAR Qualified Room Air Conditioners | Data.gov  

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

Room Air Conditioners Room Air Conditioners Consumer Data Apps Challenges Resources About Blogs Let's Talk Feedback Consumer You are here Data.gov » Communities » Consumer » Data ENERGY STAR Qualified Room Air Conditioners Dataset Summary Description Room Air Conditioners that have earned the ENERGY STAR are more efficient than standard models. ENERGY STAR is the trusted symbol for energy efficiency helping consumers save money and protect the environment through energy-efficient products and practices. More information on ENERGY STAR is available at www.energystar.gov. Tags {"Room Air Conditioners","Energy Star",products,"energy efficiency",efficient,"greenhouse gas emissions",climate,utility,utilities,household,savings,labels,partners,certification}

7

List of Room Air Conditioners Incentives | Open Energy Information  

Open Energy Info (EERE)

Conditioners Incentives Conditioners Incentives Jump to: navigation, search The following contains the list of 112 Room Air Conditioners Incentives. CSV (rows 1 - 112) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active AEP Ohio - Commercial New Construction Energy Efficiency Rebate Program (Ohio) Utility Rebate Program Ohio Commercial Industrial Local Government Municipal Utility Nonprofit Schools State Government Central Air conditioners Chillers Comprehensive Measures/Whole Building Custom/Others pending approval Energy Mgmt. Systems/Building Controls Heat pumps Lighting Lighting Controls/Sensors Motor VFDs Motors Water Heaters Commercial Cooking Equipment Commercial Refrigeration Equipment Room Air Conditioners Yes Alexandria Light and Power - Residential Energy Efficiency Rebate Program (Minnesota) Utility Rebate Program Minnesota Residential Central Air conditioners

8

Covered Product Category: Room Air Conditioners | Department of Energy  

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

Room Air Conditioners Room Air Conditioners Covered Product Category: Room Air Conditioners October 7, 2013 - 10:40am Addthis ENERGY STAR Qualified Products FEMP provides acquisition guidance across a variety of product categories, including room air conditioners, which are an ENERGY STAR®-qualified product category. Federal laws and executive orders mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law. Most manufacturers display the ENERGY STAR label on complying models. For a model not displaying this label, check the manufacturer's literature to determine if it meets the efficiency requirements outlined by ENERGY STAR. Performance Requirements for Federal Purchases For the most up-to-date efficiency levels required by ENERGY STAR, look for

9

Covered Product Category: Room Air Conditioners | Department of Energy  

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

Room Air Conditioners Room Air Conditioners Covered Product Category: Room Air Conditioners October 7, 2013 - 10:40am Addthis ENERGY STAR Qualified Products FEMP provides acquisition guidance across a variety of product categories, including room air conditioners, which are an ENERGY STAR®-qualified product category. Federal laws and executive orders mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law. Most manufacturers display the ENERGY STAR label on complying models. For a model not displaying this label, check the manufacturer's literature to determine if it meets the efficiency requirements outlined by ENERGY STAR. Performance Requirements for Federal Purchases For the most up-to-date efficiency levels required by ENERGY STAR, look for

10

Five ENERGY STAR Room Air Conditioners Fail Testing  

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

The U.S. Department of Energy's Office of Enforcement announced today that DOE testing has identified five Friedrich room air conditioners that do not meet the ENERGY STAR Programs energy...

11

Variable Speed Fan Retrofits for Computer Room Air Conditioners  

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

Variable-Speed Fan Retrofits for Computer-Room Air Conditioners Prepared for the U.S. Department of Energy Federal Energy Management Program Technology Case Study Bulletin By...

12

Variable Speed Fan Retrofits for Computer Room Air Conditioners  

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

Variable-Speed Fan Variable-Speed Fan Retrofits for Computer-Room Air Conditioners Prepared for the U.S. Department of Energy Federal Energy Management Program Technology Case Study Bulletin By Lawrence Berkeley National Laboratory Steve Greenberg September 2013 2 Contacts Steve Greenberg Lawrence Berkeley National Laboratory One Cyclotron Road, 90R3111 Berkeley, California 94720 (510) 486-6971 segreenberg@lbl.gov For more information on FEMP, please contact: Will Lintner, P.E., CEM Federal Energy Management Program U.S. Department of Energy 1000 Independence Ave. S.W. Washington, D. C. 20585-0121 (202) 586-3120 william.lintner@ee.doe.gov 3 Acknowledgements EPRI: Dennis Symanski, Brian Fortenbery Synapsense: Garret Smith, Patricia Nealon Vigilent: Corinne Vita

13

China Energy Efficiency Round Robin Testing Results for Room Air Conditioners  

E-Print Network (OSTI)

will result in rising sales prices. VRF Air Conditioner Themain users of VRF air conditioners are commercial usersand large-scale households, and VRF air conditioners usually

Zhou, Nan

2010-01-01T23:59:59.000Z

14

Energy Consumption Estimation for Room Air-conditioners Using Room Temperature Simulation with One-Minute Intervals  

E-Print Network (OSTI)

For the purpose of developing optimized control algorithm for room air-conditioners to ensure their energy efficiency, a short time interval (i.e., one minute) simulation of building thermal performance is necessary because the sampling time interval for room air-conditioner control is one minute in general. This paper studies the short-time interval room air temperature simulation method using the response factor method. Using the simulated room air temperature, an air-conditioner's running time can be known so that its energy consumption can be estimated accurately. In order to verify the simulation accuracy, an actual room equipped with a gas-engine heat pump (GHP) air-conditioning system is studied by both simulation and measurement. The cooling amount produced by the GHP is calculated using measured refrigerant pressure and temperature at condenser and evaporator respectively. The Root Mean Square Error (RMSE) between measured cooling amount and simulated cooling load is 18.9 percent of the average measured value. The profile of simulated room air temperature in both air-conditioned daytime and nighttime without air-conditioning can match the measured room air temperature. With respect to the estimated energy consumption, the profile of simulated energy consumption can match the measured data. The simulation accuracy of room air temperature and energy consumption during the air-conditioner start-up period is not good and needs to be improved in future research. But in general, the verification shows that this energy consumption simulation method is acceptable for evaluating the energy performance of a room air-conditioner, and can also be a useful tool for commissioning room air-conditioners.

Wang, F.; Yoshida, H.; Matsumoto, K.

2006-01-01T23:59:59.000Z

15

Techno-Economic Analysis of Indian Draft Standard Levels for RoomAir Conditioners  

SciTech Connect

The Indian Bureau of Energy Efficiency (BEE) finalized its first set of efficiency standards and labels for room air conditioners in July of 2006. These regulations followed soon after the publication of levels for frost-free refrigerators in the same year. As in the case of refrigerators, the air conditioner program introduces Minimum Efficiency Performance Standards (MEPS) and comparative labels simultaneously, with levels for one to five stars. Also like the refrigerator program, BEE defined several successive program phases of increasing stringency. In support of BEE's refrigerator program, Lawrence Berkeley National Laboratory (LBNL) produced an analysis of national impacts of standards in collaboration with the Collaborative Labeling and Standards Program (CLASP). That analysis drew on LBNL's experience with standards programs in the United States, as well as many other countries. Subsequently, as part of the process for setting optimal levels for air conditioner regulations, CLASP commissioned LBNL to provide support to BEE in the form of a techno-economic evaluation of air conditioner efficiency technologies. This report describes the methodology and results of this techno-economic evaluation. The analysis consists of three components: (1) Cost effectiveness to consumers of efficiency technologies relative to current baseline. (2) Impacts on the current market from efficiency regulations. (3) National energy and financial impacts. The analysis relied on detailed and up-to-date technical data made available by BEE and industry representatives. Technical parameters were used in conjunction with knowledge about air conditioner use patterns in the residential and commercial sectors, and prevailing marginal electricity prices, in order to give an estimate of per-unit financial impacts. In addition, the overall impact of the program was evaluated by combining unit savings with market forecasts in order to yield national impacts. LBNL presented preliminary results of these analyses in May 2006, at a meeting of BEEs Technical Committee for Air Conditioners. This meeting was attended by a wide array of stakeholder, including industry representatives, engineers and consumer advocates. Comments made by stakeholders at this meeting are incorporated into the final analysis presented in this report. The current analysis begins with the Rating Plan drafted by BEE in 2006, along with an evaluation of the market baseline according to test data submitted by manufacturers. MEPS, label rating levels, and baseline efficiencies are presented in Section 2. First, we compare Indian MEPS with current standards in other countries, and assess their relative stringency. Baseline efficiencies are then used to estimate the fraction of models likely to remain on the market at each phase of the program, and the impact on market-weighted efficiency levels. Section 3 deals with cost-effectiveness of higher efficiency design options. The cost-benefit analysis is grounded in technical parameters provided by industry representatives in India. This data allows for an assessment of financial costs and benefits to consumers as a result of the standards and labeling program. A Life-Cycle Cost (LCC) calculation is used to evaluate the impacts of the program at the unit level, thus providing some insight into the appropriateness of the levels chosen, and additional opportunities for further ratcheting. In addition to LCC, we also calculate payback periods, cost of conserved energy (CCE), and return on investment (ROI). Finally, Section 4 covers national impacts. This is an extension of unit level estimates in the two previous sections. Extrapolation to the national level depends on a forecast of air conditioner purchases (shipments), which we describe here. Following the cost-benefit analysis, we construct several efficiency scenarios including the BEE plan, but also considering further potential for efficiency improvement. These are combined with shipments through a stock accounting model in order to forecast air conditioner energy consumption

McNeil, Michael A.; Iyer, Maithili

2007-03-01T23:59:59.000Z

16

Common Air Conditioner Problems | Department of Energy  

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

Common Air Conditioner Problems Common Air Conditioner Problems Common Air Conditioner Problems May 30, 2012 - 6:41pm Addthis A refrigerant leak is one common air conditioning problem. | Photo courtesy of ©iStockphoto/BanksPhotos. A refrigerant leak is one common air conditioning problem. | Photo courtesy of ©iStockphoto/BanksPhotos. What does this mean for me? You can eliminate the most common air conditioner problems before hiring an air conditioning technician. You can do some air conditioner maintenance and repair tasks yourself. One of the most common air conditioning problems is improper operation. If your air conditioner is on, be sure to close your home's windows and outside doors. For room air conditioners, isolate the room or a group of connected rooms as much as possible from the rest of your home.

17

Common Air Conditioner Problems | Department of Energy  

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

Common Air Conditioner Problems Common Air Conditioner Problems Common Air Conditioner Problems May 30, 2012 - 6:41pm Addthis A refrigerant leak is one common air conditioning problem. | Photo courtesy of ©iStockphoto/BanksPhotos. A refrigerant leak is one common air conditioning problem. | Photo courtesy of ©iStockphoto/BanksPhotos. What does this mean for me? You can eliminate the most common air conditioner problems before hiring an air conditioning technician. You can do some air conditioner maintenance and repair tasks yourself. One of the most common air conditioning problems is improper operation. If your air conditioner is on, be sure to close your home's windows and outside doors. For room air conditioners, isolate the room or a group of connected rooms as much as possible from the rest of your home.

18

Tips: Air Conditioners | Department of Energy  

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

Tips: Air Conditioners Tips: Air Conditioners Tips: Air Conditioners June 24, 2013 - 6:31pm Addthis Bigger isn't always better for an air conditioner. Learn effective ways to stay cool while saving energy. | Photo courtesy of ©iStockphoto/galinast. Bigger isn't always better for an air conditioner. Learn effective ways to stay cool while saving energy. | Photo courtesy of ©iStockphoto/galinast. Buying a bigger room air conditioner won't necessarily make you feel more comfortable during the hot summer months. In fact, a room air conditioner that's too big for the area it is supposed to cool will perform less efficiently and less effectively than a smaller, properly sized unit. The reason: an oversized unit will cool the room(s) to the thermostat set-point before proper dehumidification occurs, making the area feel "clammy"

19

Tips: Air Conditioners | Department of Energy  

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

Tips: Air Conditioners Tips: Air Conditioners Tips: Air Conditioners June 24, 2013 - 6:31pm Addthis Bigger isn't always better for an air conditioner. Learn effective ways to stay cool while saving energy. | Photo courtesy of ©iStockphoto/galinast. Bigger isn't always better for an air conditioner. Learn effective ways to stay cool while saving energy. | Photo courtesy of ©iStockphoto/galinast. Buying a bigger room air conditioner won't necessarily make you feel more comfortable during the hot summer months. In fact, a room air conditioner that's too big for the area it is supposed to cool will perform less efficiently and less effectively than a smaller, properly sized unit. The reason: an oversized unit will cool the room(s) to the thermostat set-point before proper dehumidification occurs, making the area feel "clammy"

20

The Influence of Operating Modes, Room Temperature Set Point and Curtain Styles on Energy Consumption of Room Air Conditioner  

E-Print Network (OSTI)

A field investigation was carried out in an office building of Changsha city in winter and summer, the influence of different running modes, curtain styles and room temperature set point on energy consumption of room air conditioner (RAC) was studied. The results show that: In summer automatic speed mode consumes the least refrigerating energy in different running modes, compared with low speed and high speed modes, it can conserve energy for 27.3% and 15.8%, respectively. In the same running mode, setting outer curtain can conserve energy for 40.9% and 20.4% compared with no curtain and inner curtain states, respectively. In winter high speed mode is the most efficient for saving energy which can decrease 40.3% and 30.9% compared with low speed and automatic speed modes. In the same running mode, setting inner curtain state makes the least heating energy consumption in cloudy day, about 10.8% and 2.7% less than no curtain and outer curtain states. However, it is not obvious when the day is fine. The heating energy consumption decreases as room temperature set point falls, compared with the energy consumption at 20.5 C and 19.5 C, it is decreases for 34.1% and17.0 % at 18.5 C, respectively. All the results will be the reference of environment design and control for air conditioning room.

Yu, J.; Yang, C.; Guo, R.; Wu, D.; Chen, H.

2006-01-01T23:59:59.000Z

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


21

Adsorption air conditioner  

DOE Patents (OSTI)

A solar powered air conditioner using the adsorption process is constructed with its components in a nested cylindrical array for compactness and ease of operation.

Rousseau, Jean L. I. (Redondo Beach, CA)

1979-01-01T23:59:59.000Z

22

Ductless Mini-Split Air Conditioners | Department of Energy  

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

Ductless Mini-Split Air Conditioners Ductless Mini-Split Air Conditioners Ductless Mini-Split Air Conditioners August 9, 2012 - 4:05pm Addthis A ductless mini-split air conditioner is one solution to cooling part of a house. | Photo courtesy of ©iStockphoto/LUke1138. A ductless mini-split air conditioner is one solution to cooling part of a house. | Photo courtesy of ©iStockphoto/LUke1138. What does this mean for me? A ductless mini-split air conditioner is easier to install than a central air conditioning system. A ductless mini-split air conditioner provides zoned air conditioning without ducting. A ductless mini-split air conditioner is relatively easy to install and does not provide an entry point for intruders as some room air conditioners do. Ductless, mini split-system air-conditioners (mini splits) have numerous

23

Ductless Mini-Split Air Conditioners | Department of Energy  

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

Ductless Mini-Split Air Conditioners Ductless Mini-Split Air Conditioners Ductless Mini-Split Air Conditioners August 9, 2012 - 4:05pm Addthis A ductless mini-split air conditioner is one solution to cooling part of a house. | Photo courtesy of ©iStockphoto/LUke1138. A ductless mini-split air conditioner is one solution to cooling part of a house. | Photo courtesy of ©iStockphoto/LUke1138. What does this mean for me? A ductless mini-split air conditioner is easier to install than a central air conditioning system. A ductless mini-split air conditioner provides zoned air conditioning without ducting. A ductless mini-split air conditioner is relatively easy to install and does not provide an entry point for intruders as some room air conditioners do. Ductless, mini split-system air-conditioners (mini splits) have numerous

24

Techno-Economic Analysis of Indian Draft Standard Levels for Room Air Conditioners  

E-Print Network (OSTI)

National Energy Consumption conditioner. National Energy Consumption When regulationsThe total energy consumption (NEC) of the national stock of

McNeil, Michael A.; Iyer, Maithili

2008-01-01T23:59:59.000Z

25

Central Air conditioners | Open Energy Information  

Open Energy Info (EERE)

Page Edit History Facebook icon Twitter icon Central Air conditioners Jump to: navigation, search TODO: Add description List of Central Air conditioners Incentives Retrieved...

26

air conditioner | OpenEI  

Open Energy Info (EERE)

air conditioner air conditioner Dataset Summary Description View 2010 energy efficiency data from AeroSys Inc, Coaire, Cold Point, First Operations, LG Electronics, Nordyne, and Quietside manufacturers. Data includes cooling capacity, cooling performance, heating capacity, and heating performance. Spreadsheet was created by combining the tables in pdf files that are included in the zip file. Source Energy Applicance Data - United States Federal Trade Commission, www.ftc.gov Date Released Unknown Date Updated Unknown Keywords air conditioner central air conditioner efficiency efficient energy heat pump Data application/vnd.ms-excel icon 2010_CentralAC_All.xls (xls, 82.4 KiB) application/zip icon 2010CentralAirConditioner.zip (zip, 398.2 KiB) Quality Metrics Level of Review Some Review

27

China Energy Efficiency Round Robin Testing Results for Room Air Conditioners  

E-Print Network (OSTI)

Refrigeration and Air Conditioning Industry Association Junein the context of the air conditioning industry, the profileand improvement of the air conditioning industry and the

Zhou, Nan

2010-01-01T23:59:59.000Z

28

Study on Water-Cooled Solar Semiconductor Air Conditioner  

Science Conference Proceedings (OSTI)

Water-cooled solar semiconductor air conditioner was designed. Relevant calculation was made to determine the room's cooling load, which export the solar panels and battery capacity, followed by selection of CNC matcher. Development work also involves ... Keywords: solar energy, peltier effect, semiconductor air conditioner

Dong Zhi-Ming; Chang Ji-Bin; Xiang Li-Juan; Zhou Xue-Bin

2012-04-01T23:59:59.000Z

29

Maintaining Your Air Conditioner | Department of Energy  

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

Maintaining Your Air Conditioner Maintaining Your Air Conditioner Maintaining Your Air Conditioner June 18, 2013 - 6:20pm Addthis Replacing or cleaning air conditioner filters is a critical maintenance task. | Photo courtesy of ©iStockphoto/firemanYU. Replacing or cleaning air conditioner filters is a critical maintenance task. | Photo courtesy of ©iStockphoto/firemanYU. What does this mean for me? Regular maintenance keeps your air conditioner running as efficiently as possible. Maintaining your air conditioner will save you money by extending the unit's life. An air conditioner's filters, coils, and fins require regular maintenance for the unit to function effectively and efficiently throughout its years of service. Neglecting necessary maintenance ensures a steady decline in air conditioning performance while energy use steadily increases.

30

Maintaining Your Air Conditioner | Department of Energy  

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

Maintaining Your Air Conditioner Maintaining Your Air Conditioner Maintaining Your Air Conditioner June 18, 2013 - 6:20pm Addthis Replacing or cleaning air conditioner filters is a critical maintenance task. | Photo courtesy of ©iStockphoto/firemanYU. Replacing or cleaning air conditioner filters is a critical maintenance task. | Photo courtesy of ©iStockphoto/firemanYU. What does this mean for me? Regular maintenance keeps your air conditioner running as efficiently as possible. Maintaining your air conditioner will save you money by extending the unit's life. An air conditioner's filters, coils, and fins require regular maintenance for the unit to function effectively and efficiently throughout its years of service. Neglecting necessary maintenance ensures a steady decline in air conditioning performance while energy use steadily increases.

31

Federal Energy Management Program: Covered Product Category: Room Air  

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

Room Air Conditioners to someone by E-mail Room Air Conditioners to someone by E-mail Share Federal Energy Management Program: Covered Product Category: Room Air Conditioners on Facebook Tweet about Federal Energy Management Program: Covered Product Category: Room Air Conditioners on Twitter Bookmark Federal Energy Management Program: Covered Product Category: Room Air Conditioners on Google Bookmark Federal Energy Management Program: Covered Product Category: Room Air Conditioners on Delicious Rank Federal Energy Management Program: Covered Product Category: Room Air Conditioners on Digg Find More places to share Federal Energy Management Program: Covered Product Category: Room Air Conditioners on AddThis.com... Energy-Efficient Products Federal Requirements Covered Product Categories Product Designation Process

32

The Beeping Air Conditioner : EnergySmart School Inventors  

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

The Beeping Air Conditioner icon. The Beeping Air Conditioner Work in Progress Sketches Team Picture Miniature Hydroelectric Power Plant icon The Plugger icon. The Light Searcher...

33

Electrolux Gibson Air Conditioner and Equator Clothes Washer...  

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

Electrolux Gibson Air Conditioner and Equator Clothes Washer Fail DOE Energy Star Testing Electrolux Gibson Air Conditioner and Equator Clothes Washer Fail DOE Energy Star Testing...

34

central air conditioner | OpenEI  

Open Energy Info (EERE)

central air conditioner central air conditioner Dataset Summary Description View 2010 energy efficiency data from AeroSys Inc, Coaire, Cold Point, First Operations, LG Electronics, Nordyne, and Quietside manufacturers. Data includes cooling capacity, cooling performance, heating capacity, and heating performance. Spreadsheet was created by combining the tables in pdf files that are included in the zip file. Source Energy Applicance Data - United States Federal Trade Commission, www.ftc.gov Date Released Unknown Date Updated Unknown Keywords air conditioner central air conditioner efficiency efficient energy heat pump Data application/vnd.ms-excel icon 2010_CentralAC_All.xls (xls, 82.4 KiB) application/zip icon 2010CentralAirConditioner.zip (zip, 398.2 KiB) Quality Metrics Level of Review Some Review

35

Building Technologies Office: Energy-Efficient Window Air Conditioner  

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

Energy-Efficient Window Energy-Efficient Window Air Conditioner Ratings Research Project to someone by E-mail Share Building Technologies Office: Energy-Efficient Window Air Conditioner Ratings Research Project on Facebook Tweet about Building Technologies Office: Energy-Efficient Window Air Conditioner Ratings Research Project on Twitter Bookmark Building Technologies Office: Energy-Efficient Window Air Conditioner Ratings Research Project on Google Bookmark Building Technologies Office: Energy-Efficient Window Air Conditioner Ratings Research Project on Delicious Rank Building Technologies Office: Energy-Efficient Window Air Conditioner Ratings Research Project on Digg Find More places to share Building Technologies Office: Energy-Efficient Window Air Conditioner Ratings Research Project on

36

DOE Investigates Possible Air Conditioner Efficiency Violations |  

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

Investigates Possible Air Conditioner Efficiency Violations Investigates Possible Air Conditioner Efficiency Violations DOE Investigates Possible Air Conditioner Efficiency Violations February 15, 2012 - 5:13pm Addthis The Department of Energy's Office of Enforcement is committed to its compliance enforcement responsibilities with regard to federal energy conservation standards and ensuring that all those subject to the requirements are treated fairly and equally. Today, the Office of Enforcement issued a series of subpoenas as part of an investigation to determine whether manufacturers of split-system air conditioners are making and distributing in the U.S. condensing units that do not meet the current 13 SEER (Seasonal Energy Efficiency Ratio) federal energy conservation standard, which has been the standard since 2006.

37

Avoiding 100 new power plants by increasing efficiency of room air conditioners in India: opportunities and challenges  

SciTech Connect

Electricity demand for room ACs is growing very rapidly in emerging economies such as India. We estimate the electricity demand from room ACs in 2030 in India considering factors such as weather and income growth using market data on penetration of ACs in different income classes and climatic regions. We discuss the status of the current standards, labels, and incentive programs to improve the efficiency of room ACs in these markets and assess the potential for further large improvements in efficiency and find that efficiency can be improved by over 40% cost effectively. The total potential energy savings from Room AC efficiency improvement in India using the best available technology will reach over 118 TWh in 2030; potential peak demand saving is found to be 60 GW by 2030. This is equivalent to avoiding 120 new coal fired power plants of 500 MW each. We discuss policy options to complement, expand and improve the ongoing programs to capture this large potential.

Phadke, Amol; Abhyankar, Nikit; Shah, Nihar; [Lawrence Berkeley National Lab., CA (United States). Environmental Energy Technology Division

2013-10-15T23:59:59.000Z

38

Stirling Air Conditioner for Compact Cooling  

Science Conference Proceedings (OSTI)

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. Infinias air conditioner uses helium gas as refrigerant, an environmentally benign gas that does not react with other chemicals and does not burn. Infinias improvements to the Stirling cycle system will enable the cost-effective mass production of high-efficiency air conditioners that use no polluting refrigerants.

None

2010-09-01T23:59:59.000Z

39

Four Central Air Conditioners Determined Noncompliant With Energy...  

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

Action Against AeroSys, Inc. for Failure to Certify Air Conditioners and Heat Pumps DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and Heat Pump...

40

Product Standards for Air Conditioners (Japan) | Open Energy Information  

Open Energy Info (EERE)

Air Conditioners (Japan) Air Conditioners (Japan) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Product Standards for Air Conditioners (Japan) Focus Area: Appliances & Equipment Topics: Policy Impacts Website: www.eccj.or.jp/top_runner/pdf/tr_air_conditioners_apr.2008.pdf Equivalent URI: cleanenergysolutions.org/content/product-standards-air-conditioners-ja Language: English Policies: "Deployment Programs,Regulations" is not in the list of possible values (Deployment Programs, Financial Incentives, Regulations) for this property. DeploymentPrograms: Industry Codes & Standards Regulations: Appliance & Equipment Standards and Required Labeling This Energy Conservation Center Japan (ECCJ) document was created as a guide in response to its newly established set of standards and labelling

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


41

Analysis of Efficiency Standards for Air Conditioners, Air ...  

U.S. Energy Information Administration (EIA)

Federal agencies to select ENERGY STAR and ... analyze the proposed air conditioner and heat pump standards, a new baseline ... square foot office building 0.4 to 0.8 ...

42

Improving Air Conditioner and Heat Pump Modeling  

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

Improving Air-Conditioner Improving Air-Conditioner and Heat Pump Modeling Building America Stakeholders Meeting Jon Winkler March 2, 2012 2 * How do you recommend the most cost-effective A/C? Simple Question 3 Solution Whole-House Simulation Tool A/C Information * SEER 13 * SEER 14 * SEER 15 * SEER 16 * SEER 17 * SEER 18 * SEER 21 Annualized Cooling Cost (Energy + Equipment) 4 Background * Power, capacity and SHR vary with: o Outdoor temperature o Entering wetbulb o Air mass flow rate o Part load ratio Power Sensible Capacity Latent Capacity * How to accurately and easily model A/C performance? 5 Background: Model Development * A/C modeling utilizes two types of input o Rated values (capacity, efficiency, etc.) o Performance curves Capacity 1 / Efficiency 6 Background: Manufacturer's Data

43

Influence of Air Conditioner Operation on Electricity Use and Peak Demand  

E-Print Network (OSTI)

Electricity demand due to occupant controlled room air conditioners in a large mater-metered apartment building is analyzed. Hourly data on the electric demand of the building and of individual air conditioners are used in analyses of annual and time-of-day peaks. Effects of occupant schedules and behavior are examined. We conclude that room air conditioners cause a sharp annual peak demand because occupants have strongly varying thresholds with respect to toleration of high indoor temperatures. However, time-or-day peaking is smoothed by air conditioning in this building due to significant off-peak operation of air conditioners by some occupants. If occupants were billed directly for electricity, off-peak use would probably diminish making the peaks more pronounced and exacerbating the utility company's load management problems. Future studies of this type in individually metered apartment buildings are recommended.

McGarity, A. E.; Feuermann, D.; Kempton, W.; Norford, L. K.

1987-01-01T23:59:59.000Z

44

New and Underutilized Technology: Liquid Desiccant Air Conditioner |  

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

Liquid Desiccant Air Conditioner Liquid Desiccant Air Conditioner New and Underutilized Technology: Liquid Desiccant Air Conditioner October 4, 2013 - 4:40pm Addthis The following information outlines key deployment considerations for liquid desiccant air conditioners (LDACs) within the Federal sector. Benefits Liquid desiccant air conditioners deeply dry air using natural gas, solar energy, waste heat, bio-fuel, or other fossil fuels to drive the system. By providing mostly latent cooling, the LDAC controls indoor humidity without overcooling and reheating. This unit is supplemented by an electric chiller or DX air conditioner that sensibly cools the building's recirculation air. The liquid desiccant is a concentrated salt solution that directly absorbs moisture. Application LDACs are applicable in hospital, office, prison, school, and service

45

Covered Product Category: Residential Central Air Conditioners | Department  

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

Central Air Conditioners Central Air Conditioners Covered Product Category: Residential Central Air Conditioners October 7, 2013 - 10:38am Addthis ENERGY STAR Qualified Products FEMP provides acquisition guidance across a variety of product categories, including residential central air conditioners (CACs), which are an ENERGY STAR®-qualified product category. Federal laws and executive orders mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law. Most manufacturers display the ENERGY STAR label on complying models. For a model not displaying this label, check the manufacturer's literature to determine if it meets the efficiency requirements outlined by ENERGY STAR. Performance Requirements for Federal Purchases

46

Air Conditioner Compressor Performance Model  

SciTech Connect

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.

Lu, Ning; Xie, YuLong; Huang, Zhenyu

2008-09-05T23:59:59.000Z

47

Life-cycle cost and payback period analysis for commercial unitary air conditioners  

E-Print Network (OSTI)

ground water source), electrically operated, unitary central air conditioners and central air conditioning heat pumps

Rosenquist, Greg; Coughlin, Katie; Dale, Larry; McMahon, James; Meyers, Steve

2004-01-01T23:59:59.000Z

48

Technical support document: Energy efficiency standards for consumer products: Room air conditioners, water heaters, direct heating equipment, mobile home furnaces, kitchen ranges and ovens, pool heaters, fluorescent lamp ballasts and television sets. Volume 1, Methodology  

SciTech Connect

The Energy Policy and Conservation Act (P.L. 94-163), as amended, establishes energy conservation standards for 12 of the 13 types of consumer products specifically covered by the Act. The legislation requires the Department of Energy (DOE) to consider new or amended standards for these and other types of products at specified times. DOE is currently considering amending standards for seven types of products: water heaters, direct heating equipment, mobile home furnaces, pool heaters, room air conditioners, kitchen ranges and ovens (including microwave ovens), and fluorescent light ballasts and is considering establishing standards for television sets. This Technical Support Document presents the methodology, data, and results from the analysis of the energy and economic impacts of the proposed standards. This volume presents a general description of the analytic approach, including the structure of the major models.

Not Available

1993-11-01T23:59:59.000Z

49

Rating of Mixed Split Residential Air Conditioners  

E-Print Network (OSTI)

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 to be substituted for the matched components in a mixed system. The method allows calculation of capacity at 95F rating point and seasonal energy efficiency ratio, SEER, without performing laboratory test of the complete system. Limitations of the procedure, present work, and anticipated improvements are also discussed.

Domanski, P. A.

1988-01-01T23:59:59.000Z

50

Inverter control systems in the residential heat pump air conditioner  

SciTech Connect

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

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

1985-01-01T23:59:59.000Z

51

DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner...  

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

Air Conditioner and Heat Pump Models Shown to Violate Minimum Efficiency Standards DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and Heat Pump...

52

Measuring Short-term Air Conditioner Demand Reductions for  

E-Print Network (OSTI)

allow users to look up the demand reduction per device based on the daily maximum temperatureLBNL-5330E Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement-term Air Conditioner Demand Reductions for Operations and Settlement Josh Bode, Michael J. Sullivan Freeman

53

Four Central Air Conditioners Determined Noncompliant With Energy  

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

Four Central Air Conditioners Determined Noncompliant With Energy Four Central Air Conditioners Determined Noncompliant With Energy Efficiency Standard Four Central Air Conditioners Determined Noncompliant With Energy Efficiency Standard October 3, 2011 - 9:21am Addthis The U.S. Department of Energy's Office of Enforcement issued a Notice of Noncompliance Determination (Notice) on September 27, 2011, to AeroSys, Inc. (AeroSys) regarding four models of central (through-the-wall) air conditioners that fail to meet Federal energy efficiency requirements. DOE tests revealed that AeroSys through-the-wall air conditioner models THDC-18S, THDC-18T, THDC-24S, and THDC-24T do not meet the minimum energy efficiency requirements set forth in DOE regulations. The Notice provides that AeroSys must inform those to whom it has sold the models that they do

54

Commercial Central Air Conditioners, Purchasing Specifications for Energy-Efficient Products (Fact Sheet)  

Science Conference Proceedings (OSTI)

Energy efficiency purchasing specifications for federal procurements of commercial central air conditioners.

Not Available

2011-02-01T23:59:59.000Z

55

Electrolux Gibson Air Conditioner and Equator Clothes Washer Fail DOE  

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

Electrolux Gibson Air Conditioner and Equator Clothes Washer Fail Electrolux Gibson Air Conditioner and Equator Clothes Washer Fail DOE Energy Star Testing Electrolux Gibson Air Conditioner and Equator Clothes Washer Fail DOE Energy Star Testing October 6, 2010 - 10:08am Addthis DOE testing in support of the ENERGY STAR program has revealed that an Electrolux Gibson air conditioner (model GAH105Q2T1) and an Equator clothes washer (model EZ 3720 CEE), both of which claimed ENERGY STAR ratings, do not meet the ENERGY STAR requirements. Specifically, the test results for the Electrolux Gibson model show that, when tested in accordance with DOE's test procedures, it consumed 6.1 percent more energy than the Energy Star requirement. Test results for the Equator model show that it exceeds Energy Star's water factor requirements by 12.3 percent.

56

Electrolux Gibson Air Conditioner and Equator Clothes Washer Fail DOE  

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

Electrolux Gibson Air Conditioner and Equator Clothes Washer Fail Electrolux Gibson Air Conditioner and Equator Clothes Washer Fail DOE Energy Star Testing Electrolux Gibson Air Conditioner and Equator Clothes Washer Fail DOE Energy Star Testing October 6, 2010 - 10:08am Addthis DOE testing in support of the ENERGY STAR program has revealed that an Electrolux Gibson air conditioner (model GAH105Q2T1) and an Equator clothes washer (model EZ 3720 CEE), both of which claimed ENERGY STAR ratings, do not meet the ENERGY STAR requirements. Specifically, the test results for the Electrolux Gibson model show that, when tested in accordance with DOE's test procedures, it consumed 6.1 percent more energy than the Energy Star requirement. Test results for the Equator model show that it exceeds Energy Star's water factor requirements by 12.3 percent.

57

List of Central Air conditioners Incentives | Open Energy Information  

Open Energy Info (EERE)

Central Air conditioners Incentives Central Air conditioners Incentives Jump to: navigation, search The following contains the list of 1032 Central Air conditioners Incentives. CSV (rows 1-500) CSV (rows 501-1000) CSV (rows 1001-1032) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active AEP (Central and North) - CitySmart Program (Texas) Utility Rebate Program Texas Commercial Industrial Institutional Local Government Schools Boilers Central Air conditioners Chillers Comprehensive Measures/Whole Building Custom/Others pending approval Energy Mgmt. Systems/Building Controls Furnaces Heat pumps Lighting Lighting Controls/Sensors Motor VFDs Motors Roofs Windows Yes AEP (Central and SWEPCO) - Coolsaver A/C Tune Up (Texas) Utility Rebate Program Texas Commercial Installer/Contractor

58

Improving Air-Conditioner and Heat Pump Modeling (Presentation)  

SciTech Connect

A new approach to modeling residential air conditioners and heat pumps allows users to model systems by specifying only the more readily-available SEER/EER/HSPF-type metrics. Manufacturer data was used to generate full sets of model inputs for over 450 heat pumps and air conditioners. A sensitivity analysis identified which inputs can be safely defaulted 'behind-the-scenes' without negatively impacting the reliability of energy simulations.

Winkler, J.

2012-03-01T23:59:59.000Z

59

Improving Air-Conditioner and Heat Pump Modeling (Presentation)  

SciTech Connect

A new approach to modeling residential air conditioners and heat pumps allows users to model systems by specifying only the more readily-available SEER/EER/HSPF-type metrics. Manufacturer data was used to generate full sets of model inputs for over 450 heat pumps and air conditioners. A sensitivity analysis identified which inputs can be safely defaulted 'behind-the-scenes' without negatively impacting the reliability of energy simulations.

Winkler, J.

2012-03-01T23:59:59.000Z

60

Techno-Economic Analysis of Indian Draft Standard Levels for Room Air  

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

Techno-Economic Analysis of Indian Draft Standard Levels for Room Air Techno-Economic Analysis of Indian Draft Standard Levels for Room Air Conditioners Title Techno-Economic Analysis of Indian Draft Standard Levels for Room Air Conditioners Publication Type Report LBNL Report Number LBNL-63204 Year of Publication 2007 Authors McNeil, Michael A., and Maithili Iyer Date Published 03/2007 Keywords India Air Conditioner Efficiency Standards Abstract The Indian Bureau of Energy Efficiency (BEE) finalized its first set of efficiency standards and labels for room air conditioners in July of 2006. These regulations followed soon after the publication of levels for frost-free refrigerators in the same year. As in the case of refrigerators, the air conditioner program introduces Minimum Efficiency Performance Standards (MEPS) and comparative labels simultaneously, with levels for one to five stars. Also like the refrigerator program, BEE defined several successive program phases of increasing stringency.

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


61

Adsorption air conditioner for electric vehicle applications. Revision 1  

DOE Green Energy (OSTI)

This paper shows an analysis of the applicability of an adsorption system for electric vehicle (EV) air conditioning. Adsorption systems are designed and optimized to provide the required cooling for four combinations of vehicle characteristics and driving cycles. The resulting adsorption systems are compared with vapor compression air conditioners that can satisfy the cooling load. The objective function is the overall system weight, which includes the cooling system weight and the weight of the battery necessary to provide energy for air conditioner operation. The system with the minimum overall weight is considered to be the best, because a lower weight results in an increased vehicle range. The results indicate that, for the conditions analyzed in this paper, vapor compression air conditioners are superior to adsorption systems not only because they are lighter, but also because they have a higher COP and are more compact.

Aceves, S.M.

1994-07-27T23:59:59.000Z

62

Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners  

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

Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners Title Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners Publication Type Conference Proceedings Year of Publication 2000 Authors Shugars, John, Philip Coleman, Christopher T. Payne, and Laura Van Wie McGrory Conference Name Proceedings from the 2000 ACEEE Summer Study on Energy Efficiency in Buildings Volume 10 Pagination 217-226 Date Published 01/2000 Abstract The energy efficiency ofmany products has increased markedly over the past decade. A conspicuous exception to this trend is commercialpackaged rooftop air conditioners, which have experiencedlittle to no efficiency improvement since 1992 when the Energy Policy Act of 1992 imposed federal minimum standards. Packaged rooftop units have been estimated to use on the order of76 billion kWh annually in the US, at a cost ofroughly $5.6 billion. Sales of these units are growing, and the majority of units sold have energy efficiency ratios (EERs) at orjust above the current national minimum efficiency standards. In this paper we document the static efficiencies ofcommercialpackaged air conditioners, explore the reasons behindthis efficiency gap, and assess opportunities for overcoming the barriers to efficiency improvements in these products.

63

DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner...  

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

Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and Heat Pump Models DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and Heat Pump Models...

64

Rooftop Unitary Air Conditioner with Integral Dedicated Outdoor Air System  

SciTech Connect

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

Tiax Llc

2006-02-28T23:59:59.000Z

65

APPROVED ICE STORAGE AIR CONDITIONERS Revised as of 06-18-2008  

E-Print Network (OSTI)

APPROVED ICE STORAGE AIR CONDITIONERS Revised as of 06-18-2008 The following vendors and their ice storage air conditioners models can be used in the ice storage air conditioner compliance option. Input details are listed below for the approved equipment. Manufacturer Ice Energy, Inc 9351 Eastman Park Drive

66

Laboratory Performance Testing of Residential Window Air Conditioners  

SciTech Connect

Window air conditioners are the dominant cooling product for residences, in terms of annual unit sales. They are inexpensive, portable and can be installed by the owner. For this reason, they are an attractive solution for supplemental cooling, for retrofitting air conditioning into a home which lacks ductwork, and for renters. Window air conditioners for sale in the United States are required to meet very modest minimum efficiency standards. Four window air conditioners' performance were tested in the Advanced HVAC Systems Laboratory on NREL's campus in Golden, CO. In order to separate and study the refrigerant system's performance, the unit's internal leakage pathways, the unit's fanforced ventilation, and the leakage around the unit resulting from installation in a window, a series of tests were devised that focused on each aspect of the unit's performance. These tests were designed to develop a detailed performance map to determine whole-house performance in different climates. Even though the test regimen deviated thoroughly from the industry-standard ratings test, the results permit simple calculation of an estimated rating for both capacity and efficiency that would result from a standard ratings test. Using this calculation method, it was found that the three new air conditioners' measured performance was consistent with their ratings. This method also permits calculation of equivalent SEER for the test articles. Performance datasets were developed across a broad range of indoor and outdoor operating conditions, and used them to generate performance maps.

Winkler, J.; Booten, C.; Christensen, D.; Tomerlin, J.

2013-03-01T23:59:59.000Z

67

Room Air Conditioners | Department of Energy  

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

and unnecessary expense. Set the fan speed on high, except on very humid days. When humidity is high, set the fan speed on low for more comfort. The low speed on humid days will...

68

Development of vehicle magnetic air conditioner (VMAC) technology. Final report  

SciTech Connect

The objective of Phase I was to explore the feasibility of the development of a new solid state refrigeration technology - magnetic refrigeration - in order to reduce power consumption of a vehicle air conditioner by 30%. The feasibility study was performed at Iowa State University (ISU) together with Astronautics Corporation of America Technology Center (ACATC), Madison, WI, through a subcontract with ISU.

Gschneidner, Karl A., Jr.; Pecharsky, V.K.; Jiles, David; Zimm, Carl B.

2001-08-28T23:59:59.000Z

69

Monitoring and evaluation of replacing low-efficiency air conditioners with high-efficiency air conditioners in single-family detached houses in Austin, Texas  

SciTech Connect

The US DOE initiated this project to evaluate the performance of an air conditioner retrofit program in Austin, Texas. The City's Austin's Resource Management Department pursued this project to quantify the retrofit effect of replacing low-efficiency air conditioners with high-efficiency air conditioners in single-family detached homes. If successfully implemented, this retrofit program could help defer construction of a new power plant which is a major goal of this department. The project compares data collected from 12 houses during two cooling seasons under pre-retrofit and then post-retrofit air conditioner units. The existing low-efficiency air conditioners were monitored during the 1987 cooling season, replaced during the 1987--88 heating season with new, smaller sized, high-efficiency units, and then monitored again during the 1988 cooling season. Results indicated that the air conditioner retrofits reduce the annual air conditioner electric consumption and peak electric demand by an average of 38%. When normalized to the nominal capacity of the air conditioner, average demand savings were 1.12 W/ft{sup 2} and estimated annual energy savings were 1.419 kWh/ft{sup 2}. Individual air conditioner power requirements were found to be a well defined function of outdoor temperature as expected. In the absence of detailed data, estimates of the peak demand reductions of new air conditioners can be made from the manufacturer's specifications. Air conditioner energy consumption proved to be strongly linear as a function of the outdoor temperature as expected when taken as an aggregate. No noticeable differences in the diversity factor of the air conditioner usage were found. Analysis of the retrofit effect using PRISM yields estimates of the reduction in normalized annual consumption (NAC) and annual cooling consumption of 12% and 30%. 2 refs., 11 figs., 17 tabs.

Burns, R.; Hough, R.E. (Fleming (W.S.) and Associates, Inc., Syracuse, NY (United States))

1991-10-01T23:59:59.000Z

70

Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners  

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

Bridging Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners John Shugars, Consultant Philip Coleman, Lawrence BerkeleyNational Laboratory ChristopherPayne, Lawrence Berkeley National Laboratory Laura Van Wie McGrory, Lawrence Berkeley National Laboratory ABSTRACT The energy efficiency ofmany products has increased markedly over the past decade. A conspicuous exception to this trend is commercial packaged rooftop air conditioners, which have experiencedlittle to no efficiency improvement since 1992 when the Energy Policy Act of 1992 imposed federal minimum standards. Packaged rooftop units have been estimated to use on the order of76 billion kWh annually in the US, at a cost ofroughly $5.6 billion. Sales of these units are growing, and the majority of units sold have energy efficiency ratios (EERs) at orjust above the current national minimum efficiency

71

Development and Analysis of Desiccant Enhanced Evaporative Air Conditioner Prototype  

SciTech Connect

This report documents the design of a desiccant enhanced evaporative air conditioner (DEVAP AC) prototype and the testing to prove its performance. Previous numerical modeling and building energy simulations indicate a DEVAP AC can save significant energy compared to a conventional vapor compression AC (Kozubal et al. 2011). The purposes of this research were to build DEVAP prototypes, test them to validate the numerical model, and identify potential commercialization barriers.

Kozubal, E.; Woods, J.; Judkoff, R.

2012-04-01T23:59:59.000Z

72

Determining benefits and costs of improved central air conditioner efficiencies  

SciTech Connect

Economic impacts on individual consumers from possible revisions to U.S. residential-type central air conditioner energy-efficiency standards are examined using a life-cycle cost (LCC) analysis. LCC is the consumer's cost of purchasing and installing a central air conditioner and operating it over its lifetime. This approach makes it possible to evaluate the economic impacts on individual consumers from the revised standards. The methodology allows an examination of groups of the population which benefit or lose from suggested efficiency standards. The results show that the economic benefits to consumers due to modest increases in efficiency are significant. For an efficiency increase of 20percent over the existing minimum standard (i.e., 12 SEER), 35percent of households with central air conditioners experience significant LCC savings, with an average savings of $453, while 25percent show significant LCC losses, with an average loss of $158 compared to apre-standard LCC average of $5,170. The remainder of the population (40percent) are largely unaffected.

Rosenquist, G.; Levok, A.; Chan, P.; McMahon, J.

2001-01-12T23:59:59.000Z

73

Determining benefits and costs of improved central air conditioner efficiencies  

SciTech Connect

Economic impacts on individual consumers from possible revisions to U.S. residential-type central air conditioner energy-efficiency standards are examined using a life-cycle cost (LCC) analysis. LCC is the consumer's cost of purchasing and installing a central air conditioner and operating it over its lifetime. This approach makes it possible to evaluate the economic impacts on individual consumers from the revised standards. The methodology allows an examination of groups of the population which benefit or lose from suggested efficiency standards. The results show that the economic benefits to consumers due to modest increases in efficiency are significant. For an efficiency increase of 20percent over the existing minimum standard (i.e., 12 SEER), 35percent of households with central air conditioners experience significant LCC savings, with an average savings of $453, while 25percent show significant LCC losses, with an average loss of $158 compared to apre-standard LCC average of $5,170. The remainder of the population (40percent) are largely unaffected.

Rosenquist, G.; Levok, A.; Chan, P.; McMahon, J.

2001-01-12T23:59:59.000Z

74

Air Conditioner "Evolves" in Novel NIST Study  

Science Conference Proceedings (OSTI)

... A new NIST tool combining principles of engineering with those of natural evolution yielded the design for a more energy-efficient roof-top air ...

2013-09-03T23:59:59.000Z

75

The effects of galvanic corrosion on air conditioner performance  

E-Print Network (OSTI)

Corrosion of air conditioner outdoor heat exchangers (condensers) poses a significant problem for consumers living in coastal regions. This research sought to experimentally determine effects of galvanic corrosion on air conditioner condenser coils when subjected to high salt environments such as those found along the Gulf coast of the southern United States. The particular coil configuration investigated was comprised of copper tubing and aluminum fins, which form a galvanic couple in the presence of an electrolyte (salt water). Corrosion at the tube/fin junction results in a decrease of contact area through which heat is transferred. As a result, degradation of air conditioner performance occurs. An experimental plan was developed to operate two air conditioners for a period of approximately one year at a testing site in Galveston, Texas. Psychrometric evaluation of these units was conducted prior to exposure, at the midpoint of exposure, and at the conclusion of exposure. In addition, samples of copper and aluminum coils and coupons were subjected to the same coastal environment and investigated for corrosion attack. An accelerated corrosion test was also conducted to determine the effects of increased temperature, relative humidity, and salt concentrations on these samples. Air conditioner performance was measured during steady state cooling tests at outdoor conditions of 75?F (23.9?C), 82?F (27.8?C), 95?F (35.0?C), and 105?F (40.6?C) with an indoor temperature of 80?F (26.7?C) dry-bulb and 67?F (19.4?C) wet-bulb. Results of this testing showed that both units demonstrated average decreases in both cooling capacity and system EER. Sensible and latent capacity degradation for both package units showed decreases of approximately 4.6% and 20.9% respectively. System EER dropped over the course of the field investigation by 11.5% for one of the units and 8.3% for the other. An average corrosion rate for sample coupons subjected to the Galveston environment was calculated to be 0.13 MPY. Microscopic evaluation of aluminum from these galvanic couples after approximately one year of exposure showed an average pit depth approximately 19% of the aluminum thickness at the material interface. In comparison, aluminum fin collars at the material interface had an average pit about 22% of the thickness. Accelerated corrosion testing revealed some pitting, but not to the extent exhibited by field samples. A detailed description of the experimental setup, procedure, and results are provided.

Grisham, Phillip Ryan

2001-01-01T23:59:59.000Z

76

DOE Takes Action to Stop the Sales of Air-Con Air Conditioner Models Shown  

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

Takes Action to Stop the Sales of Air-Con Air Conditioner Takes Action to Stop the Sales of Air-Con Air Conditioner Models Shown to Violate Federal Energy Efficiency Appliance Standards DOE Takes Action to Stop the Sales of Air-Con Air Conditioner Models Shown to Violate Federal Energy Efficiency Appliance Standards September 23, 2010 - 12:00am Addthis Washington, DC - The Department of Energy announced today that it has taken action against Air-Con, International, requiring the company to stop selling certain air conditioning systems in the U.S. that have been shown to violate minimum energy efficiency appliance standards. DOE is proposing a civil penalty of more than $230,000 for importing and distributing these inefficient cooling products. This action and the proposed penalties are part of the Department's continued commitment to act aggressively to remove

77

YMGI Through-the-Wall Air Conditioner Determined Noncompliant With Energy  

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

YMGI Through-the-Wall Air Conditioner Determined Noncompliant With YMGI Through-the-Wall Air Conditioner Determined Noncompliant With Energy Efficiency Standard YMGI Through-the-Wall Air Conditioner Determined Noncompliant With Energy Efficiency Standard October 11, 2012 - 4:10pm Addthis The U.S. Department of Energy's Office of Enforcement issued a Notice of Noncompliance Determination (Notice) on October 11, 2012, to YMGI Group, LLC (YMGI) regarding through-the-wall split system central air conditioner basic model TTWC-18K-31B. DOE enforcement testing revealed that this model operates at a Seasonal Energy Efficiency Rating (SEER) of 8.3. The current federal standard requires that through-the-wall split system central air conditioners operate at a SEER of 12 or greater. Addthis Related Articles Four Central Air Conditioners Determined Noncompliant With Energy

78

YMGI Through-the-Wall Air Conditioner Determined Noncompliant With Energy  

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

YMGI Through-the-Wall Air Conditioner Determined Noncompliant With YMGI Through-the-Wall Air Conditioner Determined Noncompliant With Energy Efficiency Standard YMGI Through-the-Wall Air Conditioner Determined Noncompliant With Energy Efficiency Standard October 11, 2012 - 4:10pm Addthis The U.S. Department of Energy's Office of Enforcement issued a Notice of Noncompliance Determination (Notice) on October 11, 2012, to YMGI Group, LLC (YMGI) regarding through-the-wall split system central air conditioner basic model TTWC-18K-31B. DOE enforcement testing revealed that this model operates at a Seasonal Energy Efficiency Rating (SEER) of 8.3. The current federal standard requires that through-the-wall split system central air conditioners operate at a SEER of 12 or greater. Addthis Related Articles Four Central Air Conditioners Determined Noncompliant With Energy

79

Conservation for window air conditioners: a guide for homeowners and weatherization crews  

SciTech Connect

Recommendations are made on the maintenance, operation, and shading of existing window air conditioners for the purpose of helping home owners conserve energy. (LCL)

Riley, J.T.; Haumberger, H. Jr.; Riley, K.L.

1978-01-01T23:59:59.000Z

80

Measured Impacts of Air Conditioner Condenser Shading  

E-Print Network (OSTI)

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-and-after experiments conducted on three homes over a two year period. A recent EPA study recommends shading of exterior AC condensers, using landscaping or other means, as a method to reduce space cooling energy use (Akbari et al., 1992).

Parker, D. S.; Barkaszi, S. F.; Sonne, J. K.

1996-01-01T23:59:59.000Z

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


81

De-icing thermostat for air conditioners  

SciTech Connect

This patent describes an electronic thermostat adapted to be connected to an air-cooling apparatus to control the operative state of the apparatus. The thermostat includes a means for generating a digital electrical signal representative of a desired temperature setpoint and means for generating a digital electrical signal representative of the ambient temperature at the thermostat. The improvement described here comprises: means for generating control signals for the aircooling apparatus in order to inhibit the accumulation of ice on the cooling element of the air-cooling apparatus when the ambient temperature is above the temperature setpoint; means, responsive to the control signals, for deenergizing the compressor in the air-cooling apparatus for a first preselected period of time whenever the compressor is determined to have run continuously for a second preselected period of time; and means for adaptively adjusting the length of at least one of the first or second preselected periods of time as a function of the change in the rate of change of the ambient temperature.

Levine, M.R.

1986-12-09T23:59:59.000Z

82

Room Air Conditioning Energy Efficiency and Demand Response Potential  

Science Conference Proceedings (OSTI)

Room or window air conditioners are a common appliance in parts of the United States residential sector for providing summertime cooling. The technology is based on the same vapor compression cycle common in central air conditioning and refrigeration applications, but with all system components in one enclosure, which is generally small and comparatively inexpensive. The systems are simple and modular enough to be installed by the homeowner, and can be installed in windows without major modification, or ...

2011-06-30T23:59:59.000Z

83

Zero Carryover Liquid-Desiccant Air Conditioner for Solar Applications: Preprint  

DOE Green Energy (OSTI)

A novel liquid-desiccant air conditioner that dries and cools building supply air will transform the use of direct-contact liquid-desiccant systems in HVAC applications, improving comfort, air quality, and providing energy-efficient humidity control.

Lowenstein, A.; Slayzak, S.; Kozubal, E.

2006-07-01T23:59:59.000Z

84

The Impact of Energy Recovery on Window Air-conditioner Efficiency  

E-Print Network (OSTI)

An experimental energy recovering air-conditioner can produce fresh air exchange heat with exhaust air in the heat exchanger, which has no additional moving parts. The EER of the experimental air-conditioner (EAC) is increased by 17.4~37.3 percent over that of an ordinary window type air-conditioner (OAC), which is very significant for energy efficiency. On the other hand, the fresh air proportion of the EAC is increased by ~20 percent over that of the OAC, and the indoor noise of the EAC is decreased by ~3.8 dB. Therefore, indoor environment quality can be greatly improved with the EAC.

Luo, Q.; Tang, C.; Liao, K.

2006-01-01T23:59:59.000Z

85

Development of solar driven absorption air conditioners and heat pumps  

DOE Green Energy (OSTI)

The objective of this project is the development of absorption refrigeration systems for solar active heating and cooling applications. The approaches being investigated are those using air-cooled condenser-absorbers and those leading to coefficient of performances (COP) that increase continuously with heat source temperature. This is primarily an experimental project, with the emphasis on designing, fabricating and testing absorption chillers in operating regimes that are particularly suited for solar energy applications. The first phase of this project has been concluded and has experimentally demonstrated that the conventional single-effect ammonia-water absorption cycle can be used (with minor modifications) for solar cooling. The second phase of this project explores the commercial potential of the single-effect (SE) NH/sub 3//H/sub 2/O absorption air conditioner. (WHK)

Dao, K.; Wahlig, M.; Wali, E.; Rasson, J.; Molishever, E.

1980-03-01T23:59:59.000Z

86

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

E-Print Network (OSTI)

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 and an ordinary wall room, which are cooled by an air-conditioner. We used differential scanning calorimetry (DSC) to test the temperature field and heat flow fluctuation in these rooms. Through analyzing the data tested, we found that the mean temperature of PCW is lower than that of ordinary wall room by 1 to 2?, and PCW can lower the heat flow by 4.6W/m2. Combining phase change material with the building envelope can lower the indoor temperature, make the room thermally comfortable, and cut down the turn-on-and-off frequency of the air-conditioner and the primary investment and operating costs. It alleviates the urgent need for electricity.

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

2006-01-01T23:59:59.000Z

87

Laboratory Performance Testing of Residential Window Mounted Air Conditioners  

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

Laboratory Performance Testing of Residential Window Mounted Air Conditioners Jon Winkler Chuck Booten Dane Christensen Jeff Tomerlin April 29, 2012 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Why should we care? * Window AC unit sales dominate US market o 7.5 million units sold in 2011 - 36% more than ducted systems - Approx. 30% of installed capacity o Inexpensive relative to central units o Easy installation o Attractive for retrofits * Need accurate models in whole-building tools o Costs/savings relative to other solutions can be quantified o Spot cooling can reduce energy use, but when, where and by

88

Progress towards Managing Residential Electricity Demand: Impacts of Standards and Labeling for Refrigerators and Air Conditioners in India  

SciTech Connect

The development of Energy Efficiency Standards and Labeling (EES&L) began in earnest in India in 2001 with the Energy Conservation Act and the establishment of the Indian Bureau of Energy Efficiency (BEE). The first main residential appliance to be targeted was refrigerators, soon to be followed by room air conditioners. Both of these appliances are of critical importance to India's residential electricity demand. About 15percent of Indian households own a refrigerator, and sales total about 4 million per year, but are growing. At the same time, the Indian refrigerator market has seen a strong trend towards larger and more consumptive frost-free units. Room air conditioners in India have traditionally been sold to commercial sector customers, but an increasing number are going to the residential sector. Room air conditioner sales growth in India peaked in the last few years at 20percent per year. In this paper, we perform an engineering-based analysis using data specific to Indian appliances. We evaluate costs and benefits to residential and commercial sector consumers from increased equipment costs and utility bill savings. The analysis finds that, while the BEE scheme presents net benefits to consumers, there remain opportunities for efficiency improvement that would optimize consumer benefits, according to Life Cycle Cost analysis. Due to the large and growing market for refrigerators and air conditioners in India, we forecast large impacts from the standards and labeling program as scheduled. By 2030, this program, if fully implemented would reduce Indian residential electricity consumption by 55 TWh. Overall savings through 2030 totals 385 TWh. Finally, while efficiency levels have been set for several years for refrigerators, labels and MEPS for these products remain voluntary. We therefore consider the negative impact of this delay of implementation to energy and financial savings achievable by 2030.

McNeil, Michael A.; Iyer, Maithili

2009-05-30T23:59:59.000Z

89

Progress towards Managing Residential Electricity Demand: Impacts of Standards and Labeling for Refrigerators and Air Conditioners in India  

SciTech Connect

The development of Energy Efficiency Standards and Labeling (EES&L) began in earnest in India in 2001 with the Energy Conservation Act and the establishment of the Indian Bureau of Energy Efficiency (BEE). The first main residential appliance to be targeted was refrigerators, soon to be followed by room air conditioners. Both of these appliances are of critical importance to India's residential electricity demand. About 15percent of Indian households own a refrigerator, and sales total about 4 million per year, but are growing. At the same time, the Indian refrigerator market has seen a strong trend towards larger and more consumptive frost-free units. Room air conditioners in India have traditionally been sold to commercial sector customers, but an increasing number are going to the residential sector. Room air conditioner sales growth in India peaked in the last few years at 20percent per year. In this paper, we perform an engineering-based analysis using data specific to Indian appliances. We evaluate costs and benefits to residential and commercial sector consumers from increased equipment costs and utility bill savings. The analysis finds that, while the BEE scheme presents net benefits to consumers, there remain opportunities for efficiency improvement that would optimize consumer benefits, according to Life Cycle Cost analysis. Due to the large and growing market for refrigerators and air conditioners in India, we forecast large impacts from the standards and labeling program as scheduled. By 2030, this program, if fully implemented would reduce Indian residential electricity consumption by 55 TWh. Overall savings through 2030 totals 385 TWh. Finally, while efficiency levels have been set for several years for refrigerators, labels and MEPS for these products remain voluntary. We therefore consider the negative impact of this delay of implementation to energy and financial savings achievable by 2030.

McNeil, Michael A.; Iyer, Maithili

2009-05-30T23:59:59.000Z

90

Cromer Cycle Air Conditioner: A Unique Air-Conditioner Desiccant Cycle to Enhance Dehumidification and Save Energy  

E-Print Network (OSTI)

The Cromer cycle uses a desiccant to move moisture from the saturated air leaving an air conditioning (AC) cooling coil to the air returning to the AC unit from the conditioned space. This has the thermodynamic effect of reducing the overall energy consumption of the AC unit and also has the side benefit of dramatically increasing the moisture removal capacity of the AC coil. Simulations, engineering analysis and laboratory tests have confirmed the technical feasibility of the thermodynamics of the cycle. This work reports on a test at ARI conditions (95 deg. F outside, 80 deg F, 51% RH inside). The test unit (10 year old, 5 ton Bryant Air Conditioner) without the Cromer cycle, averaged an EER of 7.93 at a latent ratio of 26.2 % (SHR = 0.738). With the Cromer cycle added, the same unit averaged a total cooling EER of 11.82 with a water removal latent ratio of 53.4% (SHR= 0.466). The measured 16.4% reduction in energy use and 47.9 improvement in EER is significant for the tests at the 95% confidence level. This technology represents a major improvement in energy performance for the control of humidity conditions.

Cromer, C. J.

2000-01-01T23:59:59.000Z

91

Improved Modeling of Residential Air Conditioners and Heat Pumps for Energy Calculations  

SciTech Connect

This report presents improved air conditioner and heat pump modeling methods in the context of whole-building simulation tools, with the goal of enabling more accurate evaluation of cost effective equipment upgrade opportunities and efficiency improvements in residential buildings.

Cutler, D.; Winkler, J.; Kruis, N.; Christensen, C.; Brendemuehl, M.

2013-01-01T23:59:59.000Z

92

An Evaluation of Steady-State Dehumidification Characteristics of Residential Central Air Conditioners, Final Report  

E-Print Network (OSTI)

This report is the first of two reports on the project "Determination of the Transient Response Characteristics of High Efficiency Commercial Air Conditioners" funded by Houston Lighting and Power Company. The purpose of this report is to present the results from an investigation of the possible relationship between residential central air conditioner efficiency and dehumidification performance. The method used was that of a survey of air conditioners currently manufactured and on the market as of late 1986. Chapter 2 outlines the basic terminology used in evaluating the dehumidification performance of central air conditioners. Chapter 3 provides background to the survey data. Chapter 4 presents results from the survey. Conclusions and recommendations are presented in Chapter 5.

O'Neal, D. L.; Chan, N.; Somasundaram, S.; Katipamula, S.

1987-01-01T23:59:59.000Z

93

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

E-Print Network (OSTI)

An experimental study was conducted to quantify the effect of return air leakage from hot/humid attic spaces on the performance of a residential air conditioner. Tests were conducted in psychrometric facilities where temperatures and humidities could be controlled closely. Return air leakage from hot attic spaces was simulated by assuming adiabatic mixing of the indoor air at normal conditions with the attic air at high temperatures. Effective capacity and Energy Efficiency Ratio both decreased with increased return air leakage. However, power consumption was relatively constant for all variables except outdoor temperature, which meant that for the same power consumption, the unit delivered much lower performance when there was return air leakage. The increase in sensible heat ratio (SHR) with increasing leakage showed one of the most detrimental effects of return air leakage on performance.

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

1996-01-01T23:59:59.000Z

94

Building America Top Innovations 2013 Profile … High-Efficiency Window Air Conditioners  

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

inexpensive, portable, and can be installed by inexpensive, portable, and can be installed by home occupants, making them a good solution for supplemental cooling, for installing air conditioning in homes that lack ductwork, and for renters. As a result, 7.5 million window air conditioners are purchased each year in the United States-more than all other home cooling equipment combined. However, a window air conditioner is required to meet only modest minimum efficiency standards, and its typical installation in a window causes air leakage, which significantly reduces the equipment's performance. To measure the impact these products have on home energy use, researchers at the National Renewable Energy Laboratory (NREL) studied the performance of one 10-year-old and three new window air conditioners in a range of

95

Building America Top Innovations 2013 Profile … High-Efficiency Window Air Conditioners  

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

an inexpensive, portable form of spot cooling, an inexpensive, portable form of spot cooling, making them a good solution for supplemental cooling, for air conditioning in homes that lack ductwork, and for renters. As a result, 7.5 million window air conditioners are purchased each year in the United States-more than all other home cooling equipment combined. However, window air conditioners have low minimum efficiency standards, and their installation typically results in air leakage, which significantly reduces the equipment's performance. To measure the impact these products have on home energy use, researchers at the National Renewable Energy Laboratory (NREL) studied the performance of one 10-year-old and three new window air conditioners in a range of climates and conditions at NREL's Advanced Heating, Ventilation, and

96

DOE Requires Manufacturers to Halt Sales of Heat Pumps and Air Conditioners  

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

Requires Manufacturers to Halt Sales of Heat Pumps and Air Requires Manufacturers to Halt Sales of Heat Pumps and Air Conditioners Violating Minimum Appliance Standards DOE Requires Manufacturers to Halt Sales of Heat Pumps and Air Conditioners Violating Minimum Appliance Standards June 3, 2010 - 12:00am Addthis Washington, DC - Today, the Department of Energy announced that three manufacturers -- Aspen Manufacturing, Inc., Summit Manufacturing, and Advanced Distributor Products -- must stop distributing 61 heat pump models and 1 air conditioner model that DOE has determined do not comply with federal energy conservation standards. The manufacturers also must notify all of their customers that have been sold noncompliant units. The Department determined that these models were noncompliant based on certification information submitted to DOE for these manufacturers.

97

DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and  

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

Orders AeroSys to Halt Distribution of Inefficient Air Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and Heat Pump Models DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and Heat Pump Models March 30, 2010 - 10:05am Addthis Today, the Department of Energy announced that it is requiring AeroSys, Inc. to stop distributing two product models - one air conditioner and one heat pump - that DOE testing found to consume more energy than allowed under federal efficiency standards. This is the latest step in the Department's investigation into whether AeroSys has been selling products in the U.S. that violate minimum appliance efficiency standards. This is the first time that the Department of Energy has told a company or manufacturer that it must halt the distribution of products that fail to

98

DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and  

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

Orders AeroSys to Halt Distribution of Inefficient Air Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and Heat Pump Models DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and Heat Pump Models March 30, 2010 - 10:05am Addthis Today, the Department of Energy announced that it is requiring AeroSys, Inc. to stop distributing two product models - one air conditioner and one heat pump - that DOE testing found to consume more energy than allowed under federal efficiency standards. This is the latest step in the Department's investigation into whether AeroSys has been selling products in the U.S. that violate minimum appliance efficiency standards. This is the first time that the Department of Energy has told a company or manufacturer that it must halt the distribution of products that fail to

99

DOE Requires Manufacturers to Halt Sales of Heat Pumps and Air Conditioners  

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

Manufacturers to Halt Sales of Heat Pumps and Air Manufacturers to Halt Sales of Heat Pumps and Air Conditioners Violating Minimum Appliance Standards DOE Requires Manufacturers to Halt Sales of Heat Pumps and Air Conditioners Violating Minimum Appliance Standards June 3, 2010 - 2:17pm Addthis Today, the Department of Energy announced that three manufacturers -- Aspen Manufacturing, Inc., Summit Manufacturing, and Advanced Distributor Products -- must stop distributing 61 heat pump models and 1 air conditioner model that DOE has determined do not comply with federal energy conservation standards. The manufacturers also must notify all of their customers that have been sold noncompliant units. The Department determined that these models were noncompliant based on certification information submitted to DOE for these manufacturers.

100

DOE Requires Manufacturers to Halt Sales of Heat Pumps and Air Conditioners  

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

Requires Manufacturers to Halt Sales of Heat Pumps and Air Requires Manufacturers to Halt Sales of Heat Pumps and Air Conditioners Violating Minimum Appliance Standards DOE Requires Manufacturers to Halt Sales of Heat Pumps and Air Conditioners Violating Minimum Appliance Standards June 3, 2010 - 2:17pm Addthis Today, the Department of Energy announced that three manufacturers -- Aspen Manufacturing, Inc., Summit Manufacturing, and Advanced Distributor Products -- must stop distributing 61 heat pump models and 1 air conditioner model that DOE has determined do not comply with federal energy conservation standards. The manufacturers also must notify all of their customers that have been sold noncompliant units. The Department determined that these models were noncompliant based on certification information submitted to DOE for these manufacturers.

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


101

DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and  

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

Orders AeroSys to Halt Distribution of Inefficient Air Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and Heat Pump Models Shown to Violate Minimum Efficiency Standards DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and Heat Pump Models Shown to Violate Minimum Efficiency Standards March 30, 2010 - 12:00am Addthis WASHINGTON, DC - Today, the Department of Energy announced that it is requiring AeroSys, Inc. to stop distributing two product models - one air conditioner and one heat pump - that DOE testing found to consume more energy than allowed under federal efficiency standards. This is the latest step in the Department's investigation into whether AeroSys has been selling products in the U.S. that violate minimum appliance efficiency standards. This is the first time that the Department of Energy has told a

102

Analysis and optimization of an adsorption air conditioner for electric vehicle applications  

SciTech Connect

This paper shows an analysis of the applicability of an adsorption system for electric vehicle (EV) air conditioning. Adsorption systems are designed and optimized to provide the required cooling for four combinations of vehicle characteristics and driving cycles. The resulting adsorption systems are compared with vapor compression air conditioners that can satisfy the cooling load. The objective function is the overall system weight, which includes the cooling system weight and the weight of the battery necessary to provide energy for air conditioner operation. The system with the minimum overall weight is considered to be the best. The results show the optimum values of all the variables, as well as temperatures and amounts adsorbed, for the adsorption and desorption processes. The results indicate that, for the conditions analyzed in this paper, vapor compression air conditioners are superior to adsorption systems, not only because they are lighter, but also because they have a higher COP and are more compact.

Aceves, S.M.

1994-07-27T23:59:59.000Z

103

The Effect of Reduced Evaporator Air Flow on the Performance of a Residential Central Air Conditioner  

E-Print Network (OSTI)

This paper discusses the measured degradation in performance of a residential air conditioning system operating under reduced evaporator air flow. Experiments were conducted using a R-22 three-ton split-type cooling system with a short-tube orifice expansion device. Results are presented here for a series of tests in which the evaporator air flow was reduced from 25 to 90% below what is normally recommended for this air conditioner. At present, very little information is available which quantifies the performance of a residential cooling system operating under degraded conditions such as reduced evaporator air flow. Degraded performance measurements can provide information which could help electric utilities evaluate the potential impact of system-wide maintenance programs.

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

1992-05-01T23:59:59.000Z

104

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

E-Print Network (OSTI)

Tools of evaluating the performance of floor heating and room air conditioner are examined as a commissioning tool. Simple method is needed to check these performance while in use by residents, because evaluation currently requires significant time and effort. Therefore, this paper proposes a) two methods of evaluating the floor heating efficiency from the room / crawl space temperature and the energy consumption and b) method of evaluating COP of the room air conditioner from the data measured at the external unit. Case studies in which these tools were applied to actual residences are presented to demonstrate their effectiveness.

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

2004-01-01T23:59:59.000Z

105

Swozzle based burner tube premixer including inlet air conditioner for low emissions combustion  

DOE Patents (OSTI)

A burner for use in a combustion system of a heavy-duty industrial gas turbine includes a fuel/air premixer having an air inlet, a fuel inlet, and an annular mixing passage. The fuel/air premixer mixes fuel and air into a uniform mixture for injection into a combustor reaction zone. The burner also includes an inlet flow conditioner disposed at the air inlet of the fuel/air premixer for controlling a radial and circumferential distribution of incoming air. The pattern of perforations in the inlet flow conditioner is designed such that a uniform air flow distribution is produced at the swirler inlet annulus in both the radial and circumference directions. The premixer includes a swozzle assembly having a series of preferably air foil shaped turning vanes that impart swirl to the airflow entering via the inlet flow conditioner. Each air foil contains internal fuel flow passages that introduce natural gas fuel into the air stream via fuel metering holes that pass through the walls of the air foil shaped turning vanes. By injecting fuel in this manner, an aerodynamically clean flow field is maintained throughout the premixer. By injecting fuel via two separate passages, the fuel/air mixture strength distribution can be controlled in the radial direction to obtain optimum radial concentration profiles for control of emissions, lean blow outs, and combustion driven dynamic pressure activity as machine and combustor load are varied.

Tuthill, Richard Sterling (Bolton, CT); Bechtel, II, William Theodore (Scotia, NY); Benoit, Jeffrey Arthur (Scotia, NY); Black, Stephen Hugh (Duanesburg, NY); Bland, Robert James (Clifton Park, NY); DeLeonardo, Guy Wayne (Scotia, NY); Meyer, Stefan Martin (Troy, NY); Taura, Joseph Charles (Clifton Park, NY); Battaglioli, John Luigi (Glenville, NY)

2002-01-01T23:59:59.000Z

106

NREL: Vehicle Ancillary Loads Reduction - Air Conditioner Reduction Project  

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

Conditioner Reduction Project to Reduce Vehicle Fuel Use by 30% Conditioner Reduction Project to Reduce Vehicle Fuel Use by 30% United States map depicting number of millions of gallons of cooling and dehumidification by state: Alabama 167, Alaska 1, Arizona 43, Arkansas 86, California 730, Colorado 76, Connecticut 61, Delaware 19, Florida 753, Georgia 251, Hawaii 68, Idaho 26, Illinois 242, Indiana 142, Iowa 68, Kansas 75, Kentucky 95, Louisiana 176, Maine 21, Maryland 118, Massachusetts 86, Michigan 186, Minnesota 86, Mississippi 85, Missouri 144, Montana 12, Nebraska 40, Nevada 61, New Hampshire 90, New Jersey 167, New Mexico 52, New York 273, North Carolina 187, North Dakota 12, Ohio 229, Oklahoma 109, Oregon 66, Pennsylvania 238, Rhode Island 15, South Carolina 127, South Dakota 17, Tennessee 179, Texas 735, Utah 43, Vermont 9, Virginia 187, Washington 64, West Virginia 37, Wisconsin 167, and Wyoming 7

107

Measuring Short-term Air Conditioner Demand Reductions for Operations and  

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

Measuring Short-term Air Conditioner Demand Reductions for Operations and Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement Title Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement Publication Type Report LBNL Report Number LBNL-5330E Year of Publication 2012 Authors Bode, Josh, Michael J. Sullivan, and Joseph H. Eto Pagination 120 Date Published 01/2012 Publisher LBNL City Berkeley Keywords consortium for electric reliability technology solutions (certs), electricity markets and policy group, energy analysis and environmental impacts department Abstract Several recent demonstrations and pilots have shown that air conditioner (AC) electric loads can be controlled during the summer cooling season to provide ancillary services and improve the stability and reliability of the electricity grid. A key issue for integration of air conditioner load control into grid operations is how to accurately measure shorter-term (e.g., ten's of minutes to a couple of hours) demand reductions from AC load curtailments for operations and settlement. This report presents a framework for assessing the accuracy of shorter-term AC load control demand reduction measurements. It also compares the accuracy of various alternatives for measuring AC reductions - including methods that rely on regression analysis, load matching and control groups - using feeder data, household data and AC end-use data. A practical approach is recommended for settlement that relies on set of tables, updated annually, with pre-calculated load reduction estimates. The tables allow users to look up the demand reduction per device based on the daily maximum temperature, geographic region and hour of day and simplify the settlement process.

108

Variable Speed Fan Retrofits for Computer Room Air Conditioners  

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

Case study describes various concepts for more cost-effective cooling solutions in data centers, while keeping in mind that the reliability of computing systems and their respective cooling systems is always a key criterion.

109

Save Money and Stay Cool with an Efficient, Well-Maintained Air Conditioner  

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

Save Money and Stay Cool with an Efficient, Well-Maintained Air Save Money and Stay Cool with an Efficient, Well-Maintained Air Conditioner Save Money and Stay Cool with an Efficient, Well-Maintained Air Conditioner June 29, 2010 - 7:30am Addthis Eric Barendsen Energy Technology Program Specialist, Office of Energy Efficiency and Renewable Energy OK. It's officially summer here in Washington, D.C. I'm seeking the coolest, shadiest places possible as I get ready for the hottest few months of the year. It's already been a hot June in much of the country, and it may end up being one of the hottest Junes on record in DC. Naturally, I'm starting to think about how I'm going to stay cool this summer, while trying to minimize my energy use. Drew provided some excellent tips on summertime energy savings in his blog post two weeks ago,

110

Save Money and Stay Cool with an Efficient, Well-Maintained Air Conditioner  

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

Save Money and Stay Cool with an Efficient, Well-Maintained Air Save Money and Stay Cool with an Efficient, Well-Maintained Air Conditioner Save Money and Stay Cool with an Efficient, Well-Maintained Air Conditioner June 29, 2010 - 7:30am Addthis Eric Barendsen Energy Technology Program Specialist, Office of Energy Efficiency and Renewable Energy OK. It's officially summer here in Washington, D.C. I'm seeking the coolest, shadiest places possible as I get ready for the hottest few months of the year. It's already been a hot June in much of the country, and it may end up being one of the hottest Junes on record in DC. Naturally, I'm starting to think about how I'm going to stay cool this summer, while trying to minimize my energy use. Drew provided some excellent tips on summertime energy savings in his blog post two weeks ago,

111

The Impact of Residential Air Conditioner Charging and Sizing on Peak Electrical Demand  

E-Print Network (OSTI)

Electric utilities have had a number of air conditioner rebate and maintenance programs for many years. The purpose of these programs was to improve the efficiency of the stock of air conditioning equipment and provide better demand-side management. This paper examines the effect of refrigerant charging (proper servicing of the equipment), system sizing, and efficiency on the steady-state, coincident peak utility demand of a residential central air conditioning system. The study is based on the results of laboratory tests of a three-ton, capillary tube expansion, split-system air conditioner, system capacity and efficiency data available from manufacturer's literature, and assumptions about relative sizing of the equipment to cooling load on a residence. A qualitative discussion is provided concerning the possible impacts of transient operation and total energy use on utility program decisions. The analysis indicates that proper sizing of the unit is the largest factor affecting energy demand of the three factors (sizing, charging, and efficiency) studied in this paper. For typical oversizing of units to cooling loads in houses, both overcharging and undercharging showed significant negative impact on peak demand. The impacts of SEER changes in utility peak demand were found to be virtually independent of oversizing. For properly sized units, there was a small peak benefit to higher efficiency air conditioners.

Neal, L.; O'Neal, D. L.

1992-05-01T23:59:59.000Z

112

Issue and Improvement Measure of Multi-split Air Conditioner  

Science Conference Proceedings (OSTI)

Existing problems of traditional air source variable refrigerant flow (VRF) air-conditioning system are analyzed. The disadvantages of traditional VRF air-conditioning system are described in detail: 1) its properties are seriously affected by outdoor ... Keywords: energy saving, simulation, variable refrigerant flow air conditioning, water loop

Sun Tingting; Ni Long; Yao Yang; Ma Zuiliang; Yi Lingli

2011-02-01T23:59:59.000Z

113

LBNL-54244 Life-cycle Cost and Payback Period Analysis for Commercial Unitary Air Conditioners  

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

44 44 Life-cycle Cost and Payback Period Analysis for Commercial Unitary Air Conditioners Greg Rosenquist, Katie Coughlin, Larry Dale, James McMahon, Steve Meyers Energy Analysis Department Environmental Energy Technologies Division Ernest Orlando Lawrence Berkeley National Laboratory University of California Berkeley, CA 94720 March 2004 This work was supported by the Office of Building Technologies of the U.S. Department of Energy, under Contract No. DE-AC03-76SF00098. ii iii ABSTRACT This report describes an analysis of the economic impacts of possible energy efficiency standards for commercial unitary air conditioners and heat pumps on individual customers in terms of two metrics: life-cycle cost (LCC) and payback period (PBP). For each of the two equipment classes considered, the 11.5 EER provides the largest mean LCC savings. The results

114

13 SEER Standard for Central Air Conditioners and Heat Pumps (released in AEO2005)  

Reports and Publications (EIA)

In January 2004, after years of litigation in a case that pitted environmental groups and Attorneys General from 10 States against the U.S. Secretary of Energy, the U.S. Court of Appeals for the Second Circuit reestablished the central air conditioner and heat pump standard originally set in January 2001 [3]. The Courts ruling, which struck down a May 2002 rollback of the 2001 standard to a 12 SEER, mandates that all new central air conditioners and heat pumps meet a 13 SEER standard by January 2006, requiring a 30-percent increase in efficiency relative to current law. The AEO2005 reference case incorporates the 13 SEER standard as mandated by the Courts ruling.

Information Center

2005-04-01T23:59:59.000Z

115

Flicker Reduction Technology for Electric Heat Pumps and Central Air Conditioners  

Science Conference Proceedings (OSTI)

Electric heat pumps and air conditioners move thermal energy into and/or out of conditioned spaces. During startup, the compressor motor temporarily draws high current (inrush) from the power distribution system to accelerate the compressor from standstill to its nominal operating speed. The inrush current causes a voltage drop in the power distribution system between the compressor motor and the utility service transformer. Although very brief in durationjust fractions of a secondthe voltage drop can ca...

2011-12-28T23:59:59.000Z

116

Estimating Air Conditioner Loads Using Available Billing and Weather Data: An Exploratory Analysis  

Science Conference Proceedings (OSTI)

In limited testing, an innovative statistical technique for estimating the effects of residential air conditioners on system loads under various weather conditions produced encouraging results. The simple technique, which uses standard utility billing records and readily available weather data, could offer an inexpensive alternative to household monitoring. This report is available only to funders of Program 101A or 101.001. Funders may download this report at http://my.primen.com/Applications/DE/Commun...

1985-10-25T23:59:59.000Z

117

Thermal Energy Storage: Assessment of Ice Bear 30 Hybrid Air Conditioner  

Science Conference Proceedings (OSTI)

This report describes and documents the construction, performance, and application of a thermal energy storage system that uses ice as the storage medium. The system, Ice Bear 30 manufactured by Ice Energy Inc. located in Windsor, Colorado, is designed to provide cooling to interior spaces by circulating refrigerant within an additional evaporator coil added to a standard roof-top air conditioner. Ice storage systems exist, but what makes the Ice Bear 30 unique is its relatively small size (5 ton) for us...

2008-12-23T23:59:59.000Z

118

Determination of the Transient Dehumidification Characteristics of High Efficiency Central Air Conditioners  

E-Print Network (OSTI)

A series of tests were performed to assesses the dehumidifying performance of residential central air conditioners (CACs). The performance studies were based on factors such as: (i) dynamic performance (ii) the ASHRAE comfort zone, (iii) control strategy and (iv) published performance characteristic of the units. The units were evaluated on their ability to maintain conditions in the ASHRAE comfort zone in a typical residence and typical summer days in Houston, Texas.

Katipamula, S.; O'Neal, D. L.; Somasundaram, S.

1987-01-01T23:59:59.000Z

119

RESIDENTIAL AIR CONDITIONER FINNED-TUBE CONDENSER HEAT EXCHANGER OPTIMIZATION  

E-Print Network (OSTI)

With the upcoming ban on the production of R-22 in 2010, residential air-conditioning equipment will need to be redesigned with a more environmentally benign working fluid. R-410a is a strong candidate for replacing R-22. A model of an air-conditioning system with a focus on the finned-tube condenser design details using R-410a as the working fluid is developed. An optimization algorithm is implemented to find the optimal condenser design with various constraints for an efficiency figure of merit. The software developed is appropriate for engineering design use in the air-conditioning industry.

Susan W. Stewart; Kristinn A. Aspelund; Monifa F. Wright; Emma M. Sadler; Sam V. Shelton, Ph.D.

2002-01-01T23:59:59.000Z

120

A Preliminary Evaluation of Alternative Liquid Desiccants for a Hybrid Desiccant Air Conditioner  

E-Print Network (OSTI)

This paper presents the results of a preliminary investigation at The University of Texas at Austin of alternative liquid desiccants for use in a hybrid desiccant air-conditioning system in which a desiccant is circulated between the evaporator and the condenser of a vapor-compression air conditioner. The liquid desiccants studied were lithium chloride, lithium bromide, calcium chloride, and triethylene glycol. Each candidate desiccant was subjected to a screening process which weighed the merits of the desiccant in terms of selected characteristics. The best liquid desiccant for the anticipated application was found to be calcium chloride.

Studak, J. W.; Peterson, J. L.

1988-01-01T23:59:59.000Z

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


121

Measure Guideline: Air Conditioner Diagnostics, Maintenance, and Replacement  

SciTech Connect

This guideline responds to the need for an efficient means of identifying, diagnosing, and repairing faults in air conditioning systems in existing homes that are undergoing energy upgrades. Inadequate airflow due to constricted ducts or undersized filters, improper refrigerant charge, and other system defects can be corrected at a fraction of the cost of equipment replacement and can yield significant savings. The guideline presents a two-step approach to diagnostics and repair.

Springer, D.; Dakin, B.

2013-03-01T23:59:59.000Z

122

Passive features for a liquid desiccant air conditioner  

SciTech Connect

A conceptual development program with the ultimate objective of substantially reducing or eliminating the parasitic power requirement for liquid sorbent air conditioning systems is described. Operational tests conducted on small prototypes have shown that some of the pumps can be replaced with other apparatus requiring no electrical energy. Experimental work has also shown that some electric utility dependent pumps might be replaced by solar powered pumps thus making the system more passive in nature.

Francis, C.E.; Beavers, D.R.

1980-01-01T23:59:59.000Z

123

A liquid over-feeding military air conditioner  

SciTech Connect

A 3-ton military air conditioning unit has been experimentally studied for baseline and liquid over-feeding operation (LOF). The test results indicate that LOF outperforms the baseline case over a wide ambient temperature range in terms of cooling capacity, power consumption, and system coefficient of performance (COP). At 95 F test point, the COP improvement for LOF is 19.8% over that of the baseline case. However, optimal refrigerant charge is essential for LOF to work properly.

Mei, V.C.; Chen, F.C. [Oak Ridge National Lab., TN (United States); Bolton, C. [Army CECOM Research, Development, and Engineering Center, Fort Belvoir, VA (United States)

1995-09-01T23:59:59.000Z

124

A liquid over-feeding military air conditioner  

SciTech Connect

A 3.3-ton military air conditioning unit has been studied experimentally in both baseline (as received) and as modified for liquid over-feeding (LOF) operation. Tne baseline test, using a proper refrigerant charge, showed the measured cooling capacity to be less than 1% off the rated capacity at 95{degrees}F ambient temperature. The test results indicate that LOF operation outperforms the baseline case over a wide ambient temperature range in terms of cooling capacity, power consumption, and system coefficient of performance (COP). At a 95{degrees}F test point, LOF operation has a cooling capacity of 51,100 BTU per hour, which is a 28.9% improvement over the baseline operation capacity of 39,600 BTU per hour. The COP for LOF at 95{degrees}F is 2.62, which is 29% better than the baseline COP of 2.03. However, an optimal refrigerant charge is essential for LOF to work properly.

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

1995-07-01T23:59:59.000Z

125

Effects of Air Conditioner Use on Real-World Fuel Economy  

Science Conference Proceedings (OSTI)

Vehicle data were acquired on-road and on a chassis dynamometer to assess fuel consumption under several steady cruise conditions and at idle. Data were gathered for various air conditioner (A/C) settings and with the A/C off and the windows open. Two vehicles were used in the comparisonstudy: a 2009 Ford Explorer and a 2009 Toyota Corolla. At steady speeds between 64.4 and 112.7 kph (40 and 70 mph), both vehicles consumed more fuel with the A/C on at maximum cooling load (compressor at 100% duty cycle) than when driving with the windows down. The Explorer maintained this trend beyond 112.7 kph (70 mph), while the Corolla fuel consumption with the windows down matched that of running the A/C at 120.7 kph (75 mph), and exceeded it at 128.7 kph (80 mph). The largest incremental fuel consumption rate penalty due to air conditioner use occurred was nearly constant with a weakslight trend of increasing consumption with increasing compressor (and vehicle) speed. Lower consumption is seenobserved at idle for both vehicles, likely due to the low compressor speed at this operating point

Huff, Shean P [ORNL; West, Brian H [ORNL; Thomas, John F [ORNL

2013-01-01T23:59:59.000Z

126

Energy savings and economics of advanced control strategies for packaged air conditioners with gas heat  

Science Conference Proceedings (OSTI)

This paper presents an evaluation of the potential energy savings from adding advanced control to existing packaged air conditioners. Advanced control options include air-side economizer, multi-speed fan control, demand control ventilation and staged cooling. The energy and cost savings from the different control strategies individually and in combination are estimated using the EnergyPlus detailed energy simulation program for four building types, namely, a small office building, a stand-alone retail building, a strip mall building and a supermarket building. For each of the four building types, the simulation was run for 16 locations covering all 15 climate zones in the U.S. The maximum installed cost of a replacement controller that provides acceptable payback periods to owners is estimated.

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

2013-10-01T23:59:59.000Z

127

Investigations on Vapour Compression Air Conditioner with Direct Contact Desiccant Loop over Condenser and Evaporator  

E-Print Network (OSTI)

Perceived air quality increases when relative humidity is decreased till about 30% in the range of comfort temperature. In the present scenario, humidity is considered as a pollutant. Hence, a controlled environment not only at low temperature but also at low humidity is desired for many applications such as archives, data centers, etc. Either a separate dehumidifier or a precision air conditioning (AC) system needs to be employed for such an application. In fact, the latter forms a reheat AC system which happens to be energy inefficient. In view of this, a vapor compression window air conditioner is investigated with a superimposed liquid desiccant loop harnessing the advantages of both the compression system (high COP) and desiccant system (low humidity). Operation of such a novel system is explained, elucidating the operational feasibility. The results presented consider the characteristics of such a system with respect to changes in the evaporator inlet air temperature and humidity. The change in the specific humidity of air is compared for vapor compression system and the direct contact hybrid system for different values of inlet air temperature.

Maiya, M. P.; Ravi, J.; Tiwari, S.

2010-01-01T23:59:59.000Z

128

Room air monitor for radioactive aerosols  

DOE Patents (OSTI)

A housing assembly for use with a room air monitor for simultaneous collection and counting of suspended particles includes a casing containing a combination detector-preamplifier system at one end, a filter system at the other end, and an air flow system consisting of an air inlet formed in the casing between the detector-preamplifier system and the filter system and an air passageway extending from the air inlet through the casing and out the end opposite the detector-preamplifier combination. The filter system collects suspended particles transported directly through the housing by means of the air flow system, and these particles are detected and examined for radioactivity by the detector-pre The U.S. Government has rights in this invention pursuant to Contract No. DE-AC04-76DP03533 between the Department of Energy and Rockwell International Corporation.

Balmer, David K. (Broomfield, CO); Tyree, William H. (Boulder, CO)

1989-04-11T23:59:59.000Z

129

Room air monitor for radioactive aerosols  

DOE Patents (OSTI)

A housing assembly for use with a room air monitor for simultaneous collection and counting of suspended particles includes a casing containing a combination detector-preamplifier system at one end, a filter system at the other end, and an air flow system consisting of an air inlet formed in the casing between the detector-preamplifier system and the filter system and an air passageway extending from the air inlet through the casing and out the end opposite the detector-preamplifier combination. The filter system collects suspended particles transported directly through the housing by means of the air flow system, and these particles are detected and examined for radioactivity by the detector-preamplifier combination. 2 figs.

Balmer, D.K.; Tyree, W.H.

1987-03-23T23:59:59.000Z

130

An Evaluation of Improper Refrigerant Charge on the Performance of a Split System Air Conditioner with a Thermal Expansion Valve  

E-Print Network (OSTI)

The effect of the improper charging on steady state and cyclic performance (capacity, EER, power consumption, SEER, and coefficient of degradation) of a residential air conditioner which utilized a thermal expansion valve was investigated. This study was the continuation of ESL/CON/88-1 performed by Mohsen Farzad and Dennis O'Neal. A fully charged condition was established as a base case. The full charge was obtained by charging the unit to the subcooling specified by the manufacturer for a specific indoor and outdoor temperatures. Once the full charge was determined, the unit was subjected to 40%, 30%, 20%, 15%, 10%, and 5% undercharging and 5%, 10%, 15%, and 20% overcharging of refrigerant by mass. The fully charged tests were compared to those for under and overcharging. The performance of the unit was evaluated as a function of charge as well as at four outdoor room temperatures (82F, 90F, 95F, and 100F). As the outdoor temperature increased, the total capacity and EER dropped. The maximum total capacity, EER, and SEER were found at 10% undercharging (12 6 oz). The capacity and efficiency (EER and SEER) of the unit were found to be less sensitive to under/overcharging than the unit with a capillary tube expansion previously studied. Other data such as refrigerant flow rate, sensible heat ratio, superheat and subcooling were also presented.

Farzad, M.; O'Neal, D. L.

1989-01-01T23:59:59.000Z

131

An Evaluation of Improper Refrigerant Charge on the Performance of a Split System Air Conditioner with Capillary Tube Expansion  

E-Print Network (OSTI)

The effect of the improper charging on the performance (capacity, EER, power consumption, SEER, and coefficient of degradation) of a residential air conditioner during the steady state (wet and dry coils) and cycling operation was investigated. The fully charged condition was established as a base case. A full charge was obtained charging the unit to the superheat specified by the manufacturer's charging chart for specific set of indoor and outdoor temperatures. Once the full charge was determined, the unit was subjected to 20%, 15%, 10%, and 5% under and overcharging of refrigerant (by mass). The fully charged tests were compared to under and overcharging. The performance of the unit was evaluated as a function of charge as well as at four outdoor room temperatures (82F, 90F, 95F, and 100F). As the outdoor temperature increased, the total capacity and EER dropped. The investigation of improper charging showed that the total capacity, EER, and SEER were more sensitive to undercharging than overcharging conditions. A 20% undercharge resulted in a 21% reduction in SEER while a 20% overcharge produced a 11% reduction in SEER. Other data such as refrigerant flow rate, sensible heat ratio, superheat and subcooling are also presented.

Farzad, M.; O'Neal, D. L.

1988-01-01T23:59:59.000Z

132

Zero Carryover Liquid-Desiccant Air Conditioner for Solar Applications: Preprint  

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

A Zero Carryover A Zero Carryover Liquid-Desiccant Air Conditioner for Solar Applications Preprint A. Lowenstein AIL Research, Inc. S. Slayzak and E. Kozubal National Renewable Energy Laboratory To be presented at ASME International Solar Energy Conference (ISEC2006) Denver, Colorado July 8-13, 2006 Conference Paper NREL/CP-550-39798 July 2006 NOTICE The submitted manuscript has been offered by an employee of the Midwest Research Institute (MRI), a contractor of the US Government under Contract No. DE-AC36-99GO10337. Accordingly, the US Government and MRI retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes. This report was prepared as an account of work sponsored by an agency of the United States government.

133

Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement  

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

330E 330E Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement Josh Bode, Michael Sullivan, Joseph H. Eto January 2012 The work described in this report was funded by the Office of Electricity Delivery and Energy Reliability of the U.S. Department of Energy under Contract No. DE-AC02- 05CH11231. ERNEST ORLANDO LAWRENCE BERKELEY NATIONAL LABORATORY Disclaimer This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or

134

Modeling of a second-generation solar-driven Rankine air conditioner. Final report  

DOE Green Energy (OSTI)

Ten configurations of a second-generation (2G), solar-powered, Rankine-driven air conditioner were simulated and the data presented for use in companion studies. The results of the analysis show that the boiling-in-collector (BIC) configuration generates more power per collector area than the other configurations. The models used to simulate the configuration are presented in this report. The generated data are also presented. Experimental work was done under this study to both improve a novel refrigerant and oil lubrication system for the centrifugal compressor and investigate the aerodynamic unloading characteristics of the centrifugal compressor. The information generated was used to define possible turbo-gearbox configurations for use in the second generation computer simulation.

Denius, M.W.; Batton, W.D.

1984-07-01T23:59:59.000Z

135

Life-cycle cost and payback period analysis for commercial unitary air conditioners  

SciTech Connect

This report describes an analysis of the economic impacts of possible energy efficiency standards for commercial unitary air conditioners and heat pumps on individual customers in terms of two metrics: life-cycle cost (LCC) and payback period (PBP). For each of the two equipment classes considered, the 11.5 EER provides the largest mean LCC savings. The results show how the savings vary among customers facing different electricity prices and other conditions. At 11.5 EER, at least 80% of the users achieve a positive LCC savings. At 12.0 EER, the maximum efficiency analyzed, mean LCC savings are lower but still positive. For the {ge} $65,000 Btu/h to <135,000 Btu/h equipment class, 59% of users achieve a positive LCC savings. For the $135,000 Btu/h to <240,000 Btu/h equipment class, 91% of users achieve a positive LCC savings.

Rosenquist, Greg; Coughlin, Katie; Dale, Larry; McMahon, James; Meyers, Steve

2004-03-31T23:59:59.000Z

136

Procuring High-Efficiency Air Conditioners: Harnessing Competition to Achieve Advances in Technology  

SciTech Connect

The Departments of Energy and Defense have joined forces to devise an innovative approach to acquiring more efficient unitary air conditioners that minimize life-cycle cost through improved technology. The resulting procurement solicitation challenges manufacturers to offer products with reduced life-cycle cost, taking into account both the initial prices of their units and the costs of their ongoing electric consumption. Competing products are evaluated according to a formula that reflects both full- and part-load efficiencies under a simulated set of time-varying climate conditions. The authors will report on the progress of the procurement, including the choice of target product based on market prospects and technology readiness, development of the technical specifications and electric consumption simulator, approaches to administrative and procedural challenges, responses from manufacturers, and plans for product promotion in the future.

Hollomon, J Bradford; Gordon, Kelly L.

2002-03-01T23:59:59.000Z

137

Central Air Conditioners","Heat Pumps","Individual Air Conditioners","District Chilled Water","Central Chillers","Packaged  

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

5. Cooling Equipment, Floorspace, 1999" 5. Cooling Equipment, Floorspace, 1999" ,"Total Floorspace (million square feet)" ,"All Buildings","All Cooled Buildings","Cooling Equipment (more than one may apply)" ,,,"Residential-Type Central Air Conditioners","Heat Pumps","Individual Air Conditioners","District Chilled Water","Central Chillers","Packaged Air Conditioning Units","Swamp Coolers","Other" "All Buildings ................",67338,58474,8329,9147,14276,2750,12909,36527,2219,1312 "Building Floorspace" "(Square Feet)" "1,001 to 5,000 ...............",6774,4879,890,700,962,"Q","Q",2613,253,"Q" "5,001 to 10,000 ..............",8238,6212,1606,707,1396,"Q","Q",3197,181,"Q"

138

NREL Solves Residential Window Air Conditioner Performance Limitations (Fact Sheet), Highlights in Research & Development, NREL (National Renewable Energy Laboratory)  

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

13 Denver West Parkway 13 Denver West Parkway Golden, CO 80401 303-275-3000 | www.nrel.gov Printed with a renewable-source ink on paper containing at least 50% wastepaper, including 10% post consumer waste. NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Comprehensive performance tests lead to enhanced modeling capability and affordable methods to increase energy efficiency. Window air conditioners are inexpensive, portable, and can be installed by home occupants, making them a good solution for supplemental cooling, for installing air conditioning into homes that lack ductwork, and for renters. As a result, 7.5 million window air conditioners are purchased each year in the United States-more than all other home cooling equipment

139

Modeling the effects of Refrigerant Charging on Air Conditioner Performance Characteristics For Three Expansion Devices  

E-Print Network (OSTI)

An experimental and analytical study concerned with the off-design refrigerant charging of air conditioners is presented. A series of experiments were conducted to characterize the effects of refrigerant charge and type of expansion device on the system performance (capacity, EER, SEER, etc.) of an air conditioner. All experiments were performed according to the ASHRAE Standard [1983]. The effects of off-design refrigerant charge in the system, type of expansion device (capillary tube, TXV, and short-tube orifice), and outdoor dry-bulb temperature (82 to l00F) on the wet and dry steady state and cyclic tests are addressed in this study. The fully charged condition was established as a base case for all the expansion device systems. A full charge was obtained by charging the unit to the superheat or subcooled condition specified by the manufacturer charging chan. Once the full charge was determined, refrigerant was then added in 5% increments from -20% of full charge to +20% of full charge to cover the full range of charging conditions for a particular expansion device being tested. The investigation of off-design charging indicated that the system performance variables (total capacity, EER, and SEER) of the unit with capillary tube were more sensitive to off-design charging than the systems with TXV and short-tube orifice. From -20% to +20% charging, the capacity and EER showed a strong dependence on the outdoor temperature, but varied little with charge for the TXV and short-tube orifice expansion systems. A -20% charging resulted in a 21% reduction in SEER while a +20% charging produced an 11% reduction in SEER for the unit with capillary tube. For the TXV, SEER dropped 2% and 8% for -20% and +20% refrigerant charging, respectively. The SEER was constant at 9.4 for all the charging condition except for -5% charging where it peaked to 9.9 for the short-tube orifice expansion system. This trend would suggest that the range of sensitivity of a short-tube orifice system is confined within a small refrigerant charge. A new heat exchanger model based on tube-by-tube simulation was developed and integrated into the ORNL heat pump model. The model was capable of simulating the steady state response of a vapor compression air-to-air heat pump and air conditioner commonly used in residential applications. The simulated results were compared with laboratory tests at two outdoor temperatures. It was found that the ORNL model estimates were within an average of 3% of the experimental results from - 10% to +10% charging conditions. The model predicted the system performance up to 8% higher than measured results at +/-20% and +/-15% charging conditions. Among the eight void fraction models studied, the Hughmark model showed the best agreement between superheat and subcooled temperatures, refrigerant flow rate and capacity and the measured results.

Farzad, Mohsen

1990-08-01T23:59:59.000Z

140

DSP-Based Sensor-less Permanent Magnet Synchronous Motor Driver With Quasi-Sine PWM for Air-Conditioner Rotary Compressor.  

E-Print Network (OSTI)

??This thesis presented a sensor-less permanent magnet synchronous motor (PMSM) driver for controlling air-conditioner rotary compressor speed. In this thesis, a quasi-sine pulse-width modulation (PWM) (more)

Liu, Li-hsiang

2012-01-01T23:59:59.000Z

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


141

Consumer life-cycle cost impacts of energy-efficiency standards for residential-type central air conditioners and heat pumps  

SciTech Connect

In support of the federal government's efforts to raise the minimum energy-efficiency standards for residential-type central air conditioners and heat pumps, a consumer life-cycle cost (LCC) analysis was conducted to demonstrate the economic impacts on individual consumers from revisions to the standards. LCC is the consumer's cost of purchasing and installing an air conditioner or heat pump and operating the unit over its lifetime. The LCC analysis is conducted on a nationally representative sample of air conditioner and heat pump consumers resulting in a distribution of LCC impacts showing the percentage of consumers that are either benefiting or being burdened by increased standards. Relative to the existing minimum efficiency standard of 10 SEER, the results show that a majority of split system air conditioner and heat pump consumers will either benefit or be insignificantly impacted by increased efficiency standards of up to 13 SEER.

Rosenquist, Gregory; Chan, Peter; Lekov, Alex; McMahon, James; Van Buskirk, Robert

2001-10-10T23:59:59.000Z

142

The Impact of Codes, Regulations, and Standards on Split-Unitary Air Conditioners and Heat Pumps, 65,000 Btu/hr and Under  

Science Conference Proceedings (OSTI)

This document establishes a framework for understanding the technology and regulation of split-unitary air conditioners and heat pumps 65,000 Btu/hr and under. The reporting framework is structured so that it can be added to in the future. This study is broken into six chapters:The basic components, refrigeration cycle, operation, and efficiency ratings of split-unitary air conditioners and heat pumps are covered for background information.Equipment efficiency ...

2012-09-21T23:59:59.000Z

143

Modeled and measured effects of compressor downsizing in an existing air conditioner/heat pump in the cooling mode  

SciTech Connect

It is not uncommon to find oversized central air conditioners in residences. HVAC contractors sometimes oversize central air conditioners for one reason or another--some to the point that they may be 100% larger than needed to meet the load. Retrofit measures done to improve house envelope and distribution system efficiency also contribute to HVAC oversizing, as they reduce house heating and cooling loads. Proper sizing of an air conditioner or heat pump allows more efficient operation and provides a more comfortable environment than a highly oversized unit. Another factor that lowers operating efficiency is an improper refrigerant charge. Field inspections have revealed that about half of the units checked were not properly charged. An option available to homeowners with oversized air conditioners is to replace the existing compressor with a smaller, more efficient compressor, rather than purchasing a new, smaller unit. Such a retrofit may be economically justified, especially during a compressor failure, provided the oversizing of the existing unit is not too great. A used, 15-year old, single-package heat pump with a capillary tube expansion device on the indoor coil was purchased and tested in a set of environmental chambers to determine its cooling performance at various conditions. The system was also modeled to estimate its existing performance, and that with two different types of retrofitted state-of-the-art (SOA) efficient compressors with about 30% less capacity than the original compressor. This reduced the overall system cooling capacity by about 25%. Modeling estimated that the retrofit would increase system EER at 95 F by 30%, SEER by 34%, and reduce power demand by 39% compared to the existing unit. Reduced cycling losses account for the higher increase in SEER.

Levins, W.P.; Rice, C.K.; Baxter, V.D.

1996-05-01T23:59:59.000Z

144

Effect of refrigerant charge, duct leakage, and evaporator air flow on the high temerature performance of air conditioners and heat pumps  

E-Print Network (OSTI)

An experimental study was conducted to quantify the effect of several installation items on the high outdoor ambient temperature performance of air conditioners. These installation items were: improper amount of refrigerant charge, reduced evaporator airflow, and return air leakage from hot attic spaces. There were five sets of tests used for this research: two of them for the charging tests, two for the reduced evaporator airflow, and one for the return air leakage tests. For the charging tests, the indoor room conditions were 80'F (27.8'C) dry-bulb and 50% relative humidity. The outdoor conditions ranged from 95'F (350C) all the way up to 120'F (48.9'C). Charge levels ranged from 30% undercharged to 40% overcharged for the short-tube orifice unit. For the thermal expansion valve (TXV) unit, charge levels ranged from-36% charging to +27% charging. Performance was quantified with the following variables: total capacity, energy efficiency ratio (EER), and power. The performance of the orifice unit was more sensitive to charge than it was for the TXV unit. For the TXV unit on the -27% to +27% charging range, the capacity and EER changed little with charge. A TXV unit and a short-tube orifice unit were also tested for reduced evaporator airflow. As evaporator airflow decreased, the capacity and EER both decreased as expected. However, the drop was not as significant as with the charging tests. For the extreme case of 50% reduced evaporator airflow, neither unit's capacity or EER dropped more than 25%. Return air leakage from hot attic spaces was simulated by assuming adiabatic mixing of the indoor air at normal conditions with the attic air at high temperatures. Effective capacity and EER both decreased with increased return air leakage. However, power consumption was relatively constant for all variables except outdoor temperature, which meant that for the same power consumption, the unit delivered much lower performance when there was return air leakage. The increase in sensible heat ratio (SHR) with increasing leakage showed perhaps the most detrimental effect of return air leakage on performance, which was the inability of the unit to absorb moisture from the environment.

Rodriguez, Angel Gerardo

1995-01-01T23:59:59.000Z

145

Effect of Refrigerant Charge, Duct Leakage, and Evaporator Air Flow on the High Temperature Performance of Air Conditioners and Heat Pumps  

E-Print Network (OSTI)

An experimental study was conducted to quantify the effect of several installation items on the high outdoor ambient temperature performance of air conditioners. These installation items were: improper amount of refrigerant charge, reduced evaporator airflow, and return air leakage from hot attic spaces. There were five sets of tests used for this research: two of them for the charging tests, two for the reduced evaporator airflow, and one for the return air leakage tests. For the charging tests, the indoor room conditions were 80F (27.8C) dry-bulb and 50% relative humidity. The outdoor conditions ranged from 95F (35C) all the way up to 120F (48.9C). Charge levels ranged from 30% undercharged to 40% overcharged for the short-tube orifice unit. For the thermal expansion valve (TXV) unit, charge levels ranged from -36% charging to +27% charging. Performance was quantified with the following variables: total capacity, energy efficiency ratio (EER), and power. The performance of the orifice unit was more sensitive to charge than it was for the TXV unit. For the TXV unit on the -27% to +27% charging range, the capacity and EER changed little with charge. A TXV unit and a short-tube orifice unit were also tested for reduced evaporator airflow. As evaporator airflow decreased, the capacity and EER both decreased as expected. However, the drop was not as significant as with the charging tests. For the extreme case of 50% reduced evaporator airflow, neither unit's capacity or EER dropped more than 25%. Return air leakage from hot attic spaces was simulated by assuming adiabatic mixing of the indoor air at normal conditions with the attic air at high temperatures. Effective capacity and EER both decreased with increased return air leakage. However, power consumption was relatively constant for all variables except outdoor temperature, which meant that for the same power consumption, the unit delivered much lower performance when there was return air leakage. The increase in sensible heat ratio (SHR) with increasing leakage showed perhaps the most detrimental effect of return air leakage on performance, which was the inability of the unit to absorb moisture from the environment.

Rodriguez, Angel Gerardo

2007-11-29T23:59:59.000Z

146

The System Impact of Air-Conditioner Under-voltage Protection Schemes  

Science Conference Proceedings (OSTI)

This paper presents simulation results of evaluating an under-voltage protection scheme designed to take stalled air-conditioner (a/c) units offline such that the slow voltage recovery phenomena can be solved on areas heavily loaded with a/c motors during summer peak periods. A three feeder test-bed has been first used to quantify the effectiveness of the protection scheme and the sensitivity of the under-voltage relay settings. Then two real system events of the Western US power grid have been studied to evaluate the area impact of the protection scheme proposed by Southern California Edison. The study demonstrates that by taking all or most of the stalled a/c unit offline, the feeder voltage will recover in a few seconds, much quicker than the tens of seconds that the standard thermal relays imbedded in the motors need to trip the units. The drawback of the control scheme is that after the voltage recover, it settled at a higher voltage than before the faults because a large chuck of load has been shed.

Lu, Ning; Yang, Bo; Huang, Zhenyu; Bravo, Richard

2009-03-31T23:59:59.000Z

147

DOE Takes Action to Stop the Sales of Air-Con Air Conditioner...  

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

action against Air-Con, International, requiring the company to stop selling certain air conditioning systems in the U.S. that have been shown to violate minimum energy...

148

Impact of the Energy Efficiency Labeling and Standards Program on Room  

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

Impact of the Energy Efficiency Labeling and Standards Program on Room Impact of the Energy Efficiency Labeling and Standards Program on Room Air-conditioner in Korea Speaker(s): Jun-Young Choi Date: January 31, 2006 - 12:00pm Location: Bldg. 90 There is a significant amount of trade in energy-using equipment all over the world. A study of trade in air conditioners, refrigerators, electric motors and lighting products found that air-conditioner trade all among all economies was worth about US$35 billion in 2003. Window/wall air conditioners represented about 40% of the value of trade, and other types (split system and ducted types) about 60%. Air conditioner is the one of most energy-consuming equipments in residential sector, which reaches to include air conditioner in MEPS and energy labeling program in many economies. Much of this trade is affected in some way by minimum energy

149

Performance of an experimental solar-driven absorption air conditioner. Annual report, July 1975--September 1976  

DOE Green Energy (OSTI)

An important pathway for the use of solar energy for space conditioning of buildings is the development of a heat-actuated air conditioner that can operate with the temperatures available from flat-plate solar collectors and use air cooling for disposal of the waste heat. The solar heating and cooling program of the Lawrence Berkeley Laboratory is exploring the use of the ammonia-water absorption cycle for this purpose. Results of the initial tests of an experimental system that has been fabricated to provide basic engineering data on the operation of the ammonia-water absorption cycle under such conditions are presented. A nominal three-ton, continuous operation, heat-actuated water chiller has been fabricated by drastic modification of a commercial gas-fired unit. The major modifications included designing a new water-heated generator, adding a preheater to the solution circuit, and increasing the flow rate of solution by a factor of about three. The unit was instrumented for measurement of temperatures, pressures, and solution concentrations at points in the circuit. Twenty-two experimental runs have been made and the results analyzed. An analysis of the thermodynamic cycle which includes the finite effectiveness of heat transfer at various points in the cycle is shown to predict with good accuracy the measured values of COP. The measured coefficient of performance agreed with the calculated values over the range 0.4 to 0.75 as the conditions of individual runs were varied. The agreement with the calculated values was within about 5 percent.

Dao, K.; Simmons, M.; Wolgast, R.; Wahlig, M.

1977-01-01T23:59:59.000Z

150

Performance of an air-cooled ammonia-water absorption air conditioner at low generator temperatures  

DOE Green Energy (OSTI)

An ammonia--water absorption air conditioning system has been tested to investigate the stability of operation near the cut-off conditions. Circulation ratios were from 8 to 30. Relations for the estimation of the coefficient of performance and for the prediction of operating temperatures were derived and verified experimentally. Possible operating conditions for an air-cooled ammonia--water air conditioning system were concluded.

Dao, K.; Simmons, M.; Wolgast, R.; Wahlig, M.

1976-08-01T23:59:59.000Z

151

Tritium Room Air Monitor Operating Experience Review  

SciTech Connect

Monitoring the breathing air in tritium facility rooms for airborne tritium is a radiological safety requirement and a best practice for personnel safety. Besides audible alarms for room evacuation, these monitors often send signals for process shutdown, ventilation isolation, and cleanup system actuation to mitigate releases and prevent tritium spread to the environment. Therefore, these monitors are important not only to personnel safety but also to public safety and environmental protection. This paper presents an operating experience review of tritium monitor performance on demand during small (1 mCi to 1 Ci) operational releases, and intentional airborne inroom tritium release tests. The tritium tests provide monitor operation data to allow calculation of a statistical estimate for the reliability of monitors annunciating in actual tritium gas airborne release situations. The data show a failure to operate rate of 3.5E-06/monitor-hr with an upper bound of 4.7E-06, a failure to alarm on demand rate of 1.4E-02/demand with an upper bound of 4.4E-02, and a spurious alarm rate of 0.1 to 0.2/monitor-yr.

L. C. Cadwallader; B. J. Denny

2008-09-01T23:59:59.000Z

152

Simulation of Dehumidification Characteristics of High Efficiency Residential Central Air-Conditioners in Hot and Humid Climates  

E-Print Network (OSTI)

This study assesses the dehumidifying performance of the high efficiency residential central air conditioners (CAC) in hot/humid climates typified by that of Houston and Galveston. The performance study is based on such factors as: (i) weather (ii) thermostat set point and dead band, and (ill) sizing of unit relative to the design load of the residence. The units are evaluated on their ability to maintain conditions in the ASHRAE comfort zone in a typical residence in Houston area. The units, the thermostat, and the residence are simulated on a minute-by-minute basis using a commercial software (TRNSYS) after making certain modifications to it.

Katipamula, S.; O'Neal, D.; Somasundram, S.

1988-01-01T23:59:59.000Z

153

The Oklahoma Field Test: Air-conditioning electricity savings from standard energy conservation measures, radiant barriers, and high-efficiency window air conditioners  

SciTech Connect

A field test Involving 104 houses was performed in Tulsa, Oklahoma, to measure the air-conditioning electricity consumption of low-income houses equipped with window air conditioners, the reduction in this electricity consumption attributed to the installation of energy conservation measures (ECMS) as typically installed under the Oklahoma Weatherization Assistance Program (WAP), and the reduction achieved by the replacement of low-efficiency window air conditioners with high-efficiency units and the installation of attic radiant barriers. Air-conditioning electricity consumption and indoor temperature were monitored weekly during the pre-weatherization period (June to September 1988) and post-weatherization period (May to September 1989). House energy consumption models and regression analyses were used to normalize the air-conditioning electricity savings to average outdoor temperature conditions and the pre-weatherization indoor temperature of each house. The following conclusions were drawn from the study: (1) programs directed at reducing air-conditioning electricity consumption should be targeted at clients with high consumption to improve cost effectiveness; (2) replacing low-efficiency air conditioners with high-efficiency units should be considered an option in a weatherization program directed at reducing air-conditioning electricity consumption; (3) ECMs currently being installed under the Oklahoma WAP (chosen based on effectiveness at reducing space-heating energy consumption) should continue to be justified based on their space-heating energy savings potential only; and (4) attic radiant barriers should not be included in the Oklahoma WAP if alternatives with verified savings are available or until further testing demonstrates energy savings or other benefits in this typo of housing.

Ternes, M.P.; Levins, W.P.

1992-08-01T23:59:59.000Z

154

Experimental analysis of a window air conditioner with a R-22 and R32/R125/R134a mixture  

SciTech Connect

Much experimental and theoretical analysis of potential R-22 replacements has been accomplished. However, published information about the experimental analysis of any off-the-shelf air conditioner with a potential R-22 replacement at realistic, operating conditions is still rare. This type of work could be useful because it provides baseline data for comparing the performance of R-22 and its potential replacement at drop-in conditions. In this study, an off-the-shelf window air conditioner was tested at Air Conditioning and Refrigeration Institute (ARI)-rated indoor conditions and at different ambient temperatures, including the ARI-rated outdoor condition, with R-22 and with its potential replacement, a ternary mixture of R-32(30%)/R-125(10%)/R-134a(60%) (the ternary mixture). A test rig was built that provided for baseline operation and for the option of operating the system with a flooded evaporator by means of liquid over-feeding (LOF). The test results indicated the cooling capacity of the ternary mixture was 7.7% less than that of R-22 at 95{degrees}F ambient for baseline operation. The cooling capacity for both refrigerants improved when a flooded evaporator, or LOF, was used. For LOF operation, the cooling capacity of the ternary mixture was only 1.1% less than that of R-22. The ternary mixture had slightly higher compressor discharge pressure, a lower compressor discharge temperature, slightly lower compressor power consumption, and a higher compressor high/low pressure ratio.

Mei, V.C.; Chen, F.C.; Chen, D.T. [Oak Ridge National Lab., TN (United States); HuangFu, E.P. [USDOE, Washington, DC (United States)

1995-07-01T23:59:59.000Z

155

Analysis and design of a solar-powered liquid-desiccant air conditioner for use in hot and humid climates  

SciTech Connect

An experimental and theoretical investigation of the feasibility of a solar-powered liquid-desiccant air conditioner, for use in hot and humid climates, was carried out at the Mechanical Engineering Department, University of Florida. The proposed liquid desiccant system used nonadiabatic contactors, packed with finned-tube coils, for both moist air dehumidification and liquid-desiccant regeneration. A theoretical model was developed to analyze the complex phenomena of simultaneous heat and mass transfer in nonadiabatic contactors, as well as the continuous interaction between the dehumidification and regeneration processes. A computer code was written to assist in the analysis of the dehumidification and regeneration processes separately and coupled, for continuous operation. It was used to investigate the interaction between the different controlling parameters and their effects on the overall performance of the desiccant system. A fully solar-powered liquid-desiccant air-conditioner, with three tons of capacity was designed and optimized including economical criteria. The overall coefficient of performance (COP) of the optimized system was determined to be 0.312.

Chebbah, A.

1987-01-01T23:59:59.000Z

156

DOE/EA-1352: Environmental Assessment for Proposed Energy Conservation Standards for Residential Central Air Conditioners and Heat Pumps (12/00)  

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

52 52 ENVIRONMENTAL ASSESSMENT FOR PROPOSED ENERGY CONSERVATION STANDARDS FOR RESIDENTIAL CENTRAL AIR CONDITIONERS AND HEAT PUMPS December 2000 U.S. Department of Energy Assistant Secretary, Energy Efficiency & Renewable Energy Office of Building Research and Standards Washington, DC 20585 EA-i ENVIRONMENTAL ASSESSMENT FOR RESIDENTIAL CENTRAL AIR CONDITIONERS AND HEAT PUMPS TABLE OF CONTENTS 1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EA-1 2.0 PURPOSE AND NEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EA-1 3.0 ALTERNATIVES INCLUDING THE PROPOSED ACTION . . . . . . . . . . . . . . . . . EA-2 3.1 No Action Alternative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EA-2 3.2 Proposed Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EA-3 3.3 Alternative Standards

157

Monitoring radioactive xenon gas in room air using activated charcoal  

SciTech Connect

A method for monitoring room air for radioactive xenon gas is described. It uses activated charcoal vials, a vacuum source and a well-type scintillation counter. The method may be adapted for detection and identification of any radioactive gas excluding those with ultra-short half-lives. Sampling room air during xenon-133 ({sup 133}Xe) ventilation lung studies was performed using this technique. The results show that low concentrations of {sup 133}Xe in room air can be reliably detected and that staff exposure to {sup 133}Xe at this institution was within ICRP recommendations.

Langford, J.; Thompson, G. (Princess Margaret Hospital for Children, Perth (Australia) Sir Charles Gairdner Hospital, Perth (Australia))

1990-03-01T23:59:59.000Z

158

Life-cycle cost and payback period analysis for commercial unitary air conditioners  

E-Print Network (OSTI)

Prices Computed from Air Conditioning Load Reductions UsingRefrigerating and Air-Conditioning Engineers, Inc. (ASHRAE)/Refrigerating and Air-Conditioning Engineers, Inc. (ASHRAE),

Rosenquist, Greg; Coughlin, Katie; Dale, Larry; McMahon, James; Meyers, Steve

2004-01-01T23:59:59.000Z

159

Finding of No Significant Impact for Energy Conservation Standards for Residential Central Air Conditioners and Heat Pumps (01/01)  

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

01 01 Federal Register / Vol. 66, No. 14 / Monday, January 22, 2001 / Notices DEPARTMENT OF ENERGY Office of Energy Efficiency and Renewable Energy Finding of No Significant Impact Energy Conservation Program for Consumer Products AGENCY: Department of Energy. ACTION: Finding of No Significant Impact (FONSI) for Energy Conservation Standard for Residential Central Air Conditioners and Heat Pumps. SUMMARY: The Energy Policy and Conservation Act, as amended by the National Energy Conservation Policy Act and the National Appliance Energy Conservation Act, and the National Appliance Energy Conservation Amendments, prescribes energy conservation standards for certain major household appliances, and requires the Department of Energy (DOE) to administer an energy conservation program for these products. Based on an

160

Retrofitting an automotive air conditioner with HFC-134a, additive, and mineral oil. Final report, October 1992-May 1994  

Science Conference Proceedings (OSTI)

The paper gives results of an evaluation of a lubricant additive developed for use in retrofitting motor vehicle air conditioners. The additive was designed to enable HFC-134a to be used as a retrofit refrigerant with the existing mineral oil in CFC-12 systems. The goal of the project was to provide preliminary feasibility testing of the additive. The cooling effect of the test system retrofitted with HFC-134a and the oil additive was nearly the same as that of the original system with CFC 12 refrigerant. If lubricant additives prove to be successful, miscible lubricants may not be needed for retrofitting some automotive systems. The retrofitting procedure might be simplified and the cost to consumers might be reduced. It has not been determined if retrofitting systems with HFC-134a and oil additives is feasible for a wider range of operating conditions and types of equipment, including the applicability of orifice tube/suction accumulator systems.

Jetter, J.J.; Delafield, F.R.

1994-05-01T23:59:59.000Z

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


161

An Investigation of Alternative Methods for Measuring Static Pressure of Unitary Air Conditioners and Heat Pumps  

E-Print Network (OSTI)

This project was created to address an important issue currently faced by test facilities measuring static pressure for air-conditioning and heat pumps. Specifically, ASHRAE Standard 37, the industry standard for test setup, requires an outlet duct of a certain length, based on the unit outlet geometry, and this ducting added to the unit height may result in a test apparatus height that exceeds psychometric test room dimensions. This project attempted to alter the outlet duct in a way that reduces the test apparatus height while maintaining the reliability of the ASHRAE Standard 37 testing setup. The investigation was done in two scenarios, the first, which altered the direction of the flow after the unit with an elbow and measured static pressure downstream of the elbow, and the second which inserted a passive resistive piece in the flow to decrease the required distance between the unit and the static pressure measurement. Three air handling units were used in Scenario 1 and Scenario 2 testing, with the two smallest units additionally being tested in Scenario 1 with an over-sized duct. The scenario tests were required to be within 5% power and 2.5% airflow of a baseline test following ASHRAE Standard 37. he results for Scenario 1 have shown that ASHRAE Standard 37 can be modified to reduce testing height restrictions by using a square elbow with turning vanes, provided it is oriented in a specific way in relation to the blower. Furthermore, additional Scenario 1 testing on the over-sized outlet duct shows that possibilities exist for using a single over-sized duct to successfully meet ASHRAE Standard 37 testing conditions when testing a variety of units. Finally, the results of Scenario 2 have shown that the height constraints of the outlet duct can be reduced by installing a passive resistive device consisting of a mesh at the outlet; however, this approach applies only to those units with the heat exchanger located downstream of the blower. As a result of specific issues or problems that were encountered during the project that were beyond the scope, eleven case studies were presented and recommended for future work.

Wheeler, Grant Benson

2013-08-01T23:59:59.000Z

162

A cost-effective and fuel-conserving nonelectric air conditioner that combines engine-driven compression and absorption cycles  

SciTech Connect

A natural-gas-fueled electricity-producing condensing furnace with the potential of being mass produced at a cost of less than $1000 and providing a cost-effective and highly fuel-conserving alternative to virtually every residential gas furnace in the world has been developed. While this is a new system, it completely consists of existing mass-produced components including single-cylinder air-cooled engines, induction motors/generators, and control devices. Thus, timely commercialization can be expected and an important new energy technology and industry can result. However, all the benefits of this electricity-producing furnace occur during the winter. This has stimulated the search for a new system that can provide comparable benefits in terms of fuel conservation, the environment, and electric utility peak reduction during the summer, along with the prospects of a new and efficient new use for the natural gas surpluses that occur during the summer. The resulting system, which can use existing component equipment, is a commercial-size nonelectric air conditioner that consists of an automobile-type engine converted to natural gas, or possibly a diesel or combustion turbine, driving a Freon compression cycle, with virtually all of the engine reject heat from the exhaust and from the engine cooling system driving a conventional absorption air conditioning cycle.

Wicks, F.

1988-01-01T23:59:59.000Z

163

Techno-Economic Analysis of Indian Draft Standard Levels for Room Air Conditioners  

E-Print Network (OSTI)

the current cost of production of 3.5 Rs per kWh. It isthe average cost of production to be 3.50 Rs. per kWh, or $the cost of production significantly at 4.80 Rs. per kWh. As

McNeil, Michael A.; Iyer, Maithili

2008-01-01T23:59:59.000Z

164

China Energy Efficiency Round Robin Testing Results for Room Air Conditioners  

E-Print Network (OSTI)

L ABORATORY China Energy Efficiency Round Robin TestingNeed to Improve the Energy Efficiency of Energy Consumingfor Implementing the China Energy Efficiency Label System (

Zhou, Nan

2010-01-01T23:59:59.000Z

165

Techno-Economic Analysis of Indian Draft Standard Levels for Room Air Conditioners  

E-Print Network (OSTI)

noted that reform of electricity tariff structures is a longin the residential electricity tariff structures. Each ofcosts, and prevailing electricity tariffs may have changed.

McNeil, Michael A.; Iyer, Maithili

2008-01-01T23:59:59.000Z

166

Techno-Economic Analysis of Indian Draft Standard Levels for Room Air Conditioners  

E-Print Network (OSTI)

average. Rates collected by most State Electricity Boards inState Electricity Boards and Electricity Departments 2002- Discount Rates

McNeil, Michael A.; Iyer, Maithili

2008-01-01T23:59:59.000Z

167

Techno-Economic Analysis of Indian Draft Standard Levels for Room Air Conditioners  

E-Print Network (OSTI)

because of the higher electricity rates, higher hours ofin use patterns and electricity rates between commercial andUEC), marginal electricity rates, and discount rates.

McNeil, Michael A.; Iyer, Maithili

2008-01-01T23:59:59.000Z

168

Techno-Economic Analysis of Indian Draft Standard Levels for Room Air Conditioners  

E-Print Network (OSTI)

Electricity Prices Residential electricity rates are muchrates in India. Residential electricity rates are subsidizedand electricity rates between commercial and residential

McNeil, Michael A.; Iyer, Maithili

2008-01-01T23:59:59.000Z

169

Techno-Economic Analysis of Indian Draft Standard Levels for Room Air Conditioners  

E-Print Network (OSTI)

Table 5 Cost-Effectiveness of Energy Efficiency Commercial6 Cost-Effectiveness of Energy Efficiency ResidentialTable 5 Cost-Effectiveness of Energy Efficiency Commercial

McNeil, Michael A.; Iyer, Maithili

2008-01-01T23:59:59.000Z

170

Technical and economic analysis of energy efficiency of Chinese room air conditioners  

E-Print Network (OSTI)

the impact on national energy consumption by adoption of thecase forecast of national energy consumption assumes thatcase forecast of national energy consumption assumes the

Fridley, David G.; Rosenquist, Gregory; Jiang, Lin; Li, Aixian; Xin, Dingguo; Cheng, Jianhong

2001-01-01T23:59:59.000Z

171

Techno-Economic Analysis of Indian Draft Standard Levels for Room Air Conditioners  

E-Print Network (OSTI)

costs is adequately compensated by lower electricity bills.Electricity bill savings are in turn dependent on the hoursmargin, residential electricity bills do not cover utility

McNeil, Michael A.; Iyer, Maithili

2008-01-01T23:59:59.000Z

172

China Energy Efficiency Round Robin Testing Results for Room Air Conditioners  

E-Print Network (OSTI)

labeling program (Energy Guide). In order to ensure thethe yellow label titled Energy Guide and has clearly sti-

Zhou, Nan

2010-01-01T23:59:59.000Z

173

China Energy Efficiency Round Robin Testing Results for Room Air Conditioners  

E-Print Network (OSTI)

the market trend is increasingly towards energy efficiency.trend of trans- formation to an energy-efficient products market.

Zhou, Nan

2010-01-01T23:59:59.000Z

174

China Energy Efficiency Round Robin Testing Results for Room Air Conditioners  

E-Print Network (OSTI)

where the static pressure (ESP) is measured. The length oftaps used to measure the ESP may be in the same duct or inand the measurement of the ESP is performed in 4 points at

Zhou, Nan

2010-01-01T23:59:59.000Z

175

A Homeowners Guide to Window Air Conditioner Installation for Efficiency and Comfort (Fact Sheet), Building America Case Study: Technology Solutions for Existing Homes, Building Technologies Office (BTO)  

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

Homeowners in the United States spend Homeowners in the United States spend one out of every eight dollars of utility costs on cooling their living space. Window air conditioners (A/Cs) are an inexpensive alternative to central systems, and are sold in greater numbers each year than all other residential cooling systems. They are purchased to cool a specific room and are easy for anyone to install. In contrast to these benefits, window A/Cs come at a cost-they operate less efficiently (using more energy to do the same cooling) than most other residential A/C systems. Researchers at the National Renewable Energy Laboratory (NREL) studied window A/Cs on behalf of the U.S.

176

Effects of system cycling, evaporator airflow, and condenser coil fouling on the performance of residential split-system air conditioners  

E-Print Network (OSTI)

Three experimental studies were conducted to quantify the effects of system cycling, evaporator airflow, and condenser coil fouling on the performance of residential air conditioners. For all studies, the indoor dry-bulb (db) temperature was 80F (26.7C) db. The cycling study consisted of twelve transient tests conducted with an outdoor temperature of 95F (35C) db for cycle times of 6, 10, 15, and 24 minutes. Indoor relative humidities of 40%, 50%, and 60% were also considered. The evaporator airflow study consisted of twenty-four steady-state tests conducted with an indoor condition of 67F (19.4C) wet-bulb (wb) for evaporator airflows ranging from 50% below to 37.5% above rated airflow. Outdoor temperatures of 85F (29.4C) db, 95F (35C) db, and 105F (40.6C) db were also considered. The coil fouling study used a total of six condensers that were exposed to an outdoor environment for predetermined amounts of time and tested periodically. Three of the condensers were cleaned and retested during the periodic testing cycles. Testing consisted of thirty-three steady-state tests conducted with an indoor condition of 67F (19.4C) wb for outdoor exposure times of 0, 2000, 4000, and 8000 hours. Outdoor temperatures of 82F (27.8C) db and 95F (35C) db were also considered.

Dooley, Jeffrey Brandon

2004-12-01T23:59:59.000Z

177

Fault detection methods for vapor-compression air conditioners using electrical measurements  

E-Print Network (OSTI)

(cont.) This method was experimentally tested and validated on a commercially available air handler and duct system. In the second class of faults studied, liquid refrigerant, rather than vapor, enters the cylinder of a ...

Laughman, Christopher Reed.

2008-01-01T23:59:59.000Z

178

Life-cycle cost and payback period analysis for commercial unitary air conditioners  

E-Print Network (OSTI)

avoid bias in the electricity bill calculations, we assignedarrive at an annual electricity bill. The difference betweenbill and multiplied it by the ratio of the total air conditioning energy use to the total building electricity

Rosenquist, Greg; Coughlin, Katie; Dale, Larry; McMahon, James; Meyers, Steve

2004-01-01T23:59:59.000Z

179

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

DOE Green Energy (OSTI)

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

Not Available

1978-12-01T23:59:59.000Z

180

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

E-Print Network (OSTI)

This report presents the measured degradation in performance of a residential air conditioning system operating under degraded conditions. Experiments were conducted using a R-22 threeton split-type cooling system with a short-tube orifice expansion device. Results are presented here for a series of tests in which the various commonly occurring degraded conditions were simulated on a test bench. At present, very little information is available which quantifies the performance of a residential cooling system operating under degraded conditions. Degraded performance measurements can provide information which could help electric utilities evaluate the potential impact of systemwide maintenance programs. This report also discuss the development of a diagnostic procedure based on measurement of refrigerant and air side temperatures.

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

1992-01-01T23:59:59.000Z

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


181

Comparison of the performance of open cycle air conditioners utilizing rotary desiccant dehumidifiers  

DOE Green Energy (OSTI)

This paper presents the results of an investigation of open cycle cooling systems using rotary desiccant dehumidifiers. Three systems, the ventilation, recirculation, and Dunkle cycles have been modeled. The performance of these systems coupled with an air-based solar system has been determined using TRNSYS simulations of system operation in four representative US climates. The system COP, fraction of the total cooling load met by the desiccant system, and fraction of the thermal energy provided by solar energy are compared. An assessment of the effect of climate and system parameters on the relative performance of the three system configurations is made. It is shown that in order to meet residential loads of 7 to 11 kW with a COP on the order of unity, systems with high effectiveness must be employed. These systems were also found to perform well when operated solely with a solar thermal input.

Jurinak, J.J.; Beckman, W.A.

1985-01-01T23:59:59.000Z

182

Seasonal efficiencies of residential heat pump air conditioners with inverter-driven compressors  

SciTech Connect

This paper describes a study to experimentally determine the steady-state characteristics, cyclic effect, and frosting/defrosting effect of a inverter heat pump currently available on the Japanese market and compute its seasonal efficiency based on the local outdoor air temperature data. It has been found that the APF of this heat pump is higher by 15% than that of the conventional fixed-speed heat pump. If cyclic and frosting/defrosting losses are eliminated, the APF of the inverter heat pump will be further improved by 2% to 6%. For the evaluation of an inverter heat pump, APF alone is not sufficient, and an additional parameter such as an annual comfort factor (ACF) is needed.

Hori, M.; Akamine, I.; Sakai, T.

1985-01-01T23:59:59.000Z

183

High-Efficiency Variable Dehumidification for Air Conditioners: ClimaStat  

SciTech Connect

Advantek has successfully developed the first low-cost technology offering significant improvement in both Seasonal Energy Efficiency (SEER) and comfort & humidity control. A production prototype was constructed based on a commercial roof top package unit. The prototype was operated under a wide range of psychrometric conditions. Test data was analyzed to identify refinements, which were implemented to further improve performance in an iterative procedure that resulted in a fully optimized technology. The latest results show an increase in dehumidification capacity of 56% with ClimaStat in full dehumidify mode vs. with ClimaStat off. Dehumidification improved by a factor of 1.7 to 1.9 meaning that the unit can provide nearly twice the water removal per unit of sensible cooling load. Performance testing results have been consistent, verifiable and repeatable. . ClimaStat cost-effectively controls humidity on-demand and improves indoor air quality while reducing annual energy costs. Test data clearly shows that ClimaStat costs 20% to 60% less to operate. ClimaStat is ready for market.

West, Michael K., Ph.D. P.E.

2006-04-30T23:59:59.000Z

184

Properties and Cycle Performance of Refrigerant Blends Operating Near and Above the Refrigerant Critical Point, Task 2: Air Conditioner System Study  

SciTech Connect

The main goal of this project was to investigate and compare the performance of an R410A air conditioner to that of an R22 air conditioner, with specific interest in performance at high ambient temperatures at which the condenser of the R410A system may be operating above the refrigerant's critical point. Part 1 of this project consisted of conducting comprehensive measurements of thermophysical for refrigerant R125 and refrigerant blends R410A and R507A and developing new equation of state formulations and mixture models for predicting thermophysical properties of HFC refrigerant blends. Part 2 of this project conducted performance measurements of split-system, 3-ton R22 and R410A residential air conditioners in the 80 to 135 F (27.8 to 57.2 C) outdoor temperature range and development of a system performance model. The performance data was used in preparing a beta version of EVAP-COND, a windows-based simulation package for predicting performance of finned-tube evaporators and condensers. The modeling portion of this project also included the formulation of a model for an air-conditioner equipped with a thermal expansion valve (TXV). Capacity and energy efficiency ratio (EER) were measured and compared. The R22 system's performance was measured over the outdoor ambient temperature range of 80 to 135 F (27.8 to 57.2 C). The same test range was planned for the R410A system. However, the compressor's safety system cut off the compressor at the 135.0 F (57.2 C) test temperature. The highest measurement on this system was at 130.0 F (54.4 C). Subsequently, a custom-manufactured R410A compressor with a disabled safety system and a more powerful motor was installed and performance was measured at outdoor temperatures up to 155.0 F (68.3 C). Both systems had similar capacity and EER performance at 82.0 F (27.8 C). The capacity and EER degradation of both systems were nearly linearly dependent with rising ambient outdoor ambient test temperatures. The performance degradation of R410A at higher temperatures was greater than R22. However, the R22 and R410A systems both operated normally during all tests. Visual observations of the R410A system provided no indication of vibrations or TXV hunting at high ambient outdoor test conditions with the compressor operating in the transcritical regime.

Piotr A. Domanski; W. Vance Payne

2002-10-31T23:59:59.000Z

185

Properties and Cycle Performance of Refrigerant Blends Operating Near and Above the Refrigerant Critical Point, Task 2: Air Conditioner System Study  

SciTech Connect

The main goal of this project was to investigate and compare the performance of an R410A air conditioner to that of an R22 air conditioner, with specific interest in performance at high ambient temperatures at which the condenser of the R410A system may be operating above the refrigerant's critical point. Part 1 of this project consisted of conducting comprehensive measurements of thermophysical for refrigerant R125 and refrigerant blends R410A and R507A and developing new equation of state formulations and mixture models for predicting thermophysical properties of HFC refrigerant blends. Part 2 of this project conducted performance measurements of split-system, 3-ton R22 and R410A residential air conditioners in the 80 to 135 F (27.8 to 57.2 C) outdoor temperature range and development of a system performance model. The performance data was used in preparing a beta version of EVAP-COND, a windows-based simulation package for predicting performance of finned-tube evaporators and condensers. The modeling portion of this project also included the formulation of a model for an air-conditioner equipped with a thermal expansion valve (TXV). Capacity and energy efficiency ratio (EER) were measured and compared. The R22 system's performance was measured over the outdoor ambient temperature range of 80 to 135 F (27.8 to 57.2 C). The same test range was planned for the R410A system. However, the compressor's safety system cut off the compressor at the 135.0 F (57.2 C) test temperature. The highest measurement on this system was at 130.0 F (54.4 C). Subsequently, a custom-manufactured R410A compressor with a disabled safety system and a more powerful motor was installed and performance was measured at outdoor temperatures up to 155.0 F (68.3 C). Both systems had similar capacity and EER performance at 82.0 F (27.8 C). The capacity and EER degradation of both systems were nearly linearly dependent with rising ambient outdoor ambient test temperatures. The performance degradation of R410A at higher temperatures was greater than R22. However, the R22 and R410A systems both operated normally during all tests. Visual observations of the R410A system provided no indication of vibrations or TXV hunting at high ambient outdoor test conditions with the compressor operating in the transcritical regime.

Piotr A. Domanski; W. Vance Payne

2002-10-31T23:59:59.000Z

186

China Energy Efficiency Round Robin Testing Results for Room  

E-Print Network (OSTI)

LBNL-3502E China Energy Efficiency Round Robin Testing Results for Room Air Conditioners Nan Zhou Round Robin Testing Results and Analysis by China National Institute of Standardization..................................................................................................................... 1 I.1.1 China's Energy Constraint Problem and the Need to Improve the Energy Efficiency of Energy

187

Experimental study of a R-407C drop-in test on an off-the-shelf air conditioner with a counter-cross-flow evaporator  

SciTech Connect

An off-the-shelf 2-ton window air conditioner having an energy efficiency ratio of 10 was used to perform a drop-in test with R-407C. Laboratory tests were performed using a parallel-cross-flow (PCF) evaporator and a counter-cross-flow (CCF) evaporator. The CCF configuration is designed to take advantage of the temperature glide of R-407C so that the warm evaporator inlet air will be in contact with the higher temperature part of the evaporator coils first. The test results indicated that, at the Air Conditioning and Refrigeration Institute-rated indoor and outdoor conditions, the cooling capacity was 8% higher and system coefficient of performance about 3.8% higher for the CCF evaporator than for the PCF evaporator. The test results also showed that the latent load for CCF was 30.6% higher than for PCF. The far better dehumidification effect provided by the CCF evaporator design is desirable for areas where the latent load is high. The experimental findings should be useful for future efforts to design a dehumidifier that uses a zeotropic refrigerant that provides a significant temperature glide. R-22 test data from a previous project are included as a reference.

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

1998-03-01T23:59:59.000Z

188

Effect of room air recirculation delay on the decay rate of tracer gas  

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

Effect of room air recirculation delay on the decay rate of tracer gas Effect of room air recirculation delay on the decay rate of tracer gas Title Effect of room air recirculation delay on the decay rate of tracer gas Publication Type Conference Proceedings Year of Publication 2004 Authors Kristoffersen, Astrid H., Ashok J. Gadgil, and David M. Lorenzetti Conference Name 9th International Conference on Air Distribution in Rooms - RoomVent 2004, Pagination pp 6 Date Published September 5-8, 2 Conference Location Coimbra, Portugal Abstract Tracer gas measurements are commonly used to estimate the fresh air exchange rate in a room or building. Published tracer decay methods account for fresh air supply, infiltration, and leaks in ductwork. However, the time delay associated with a ventilation system recirculating tracer back to the room also affects the decay rate. We present an analytical study of tracer gas decay in a well-mixed, mechanically-ventilated room with recirculation. The analysis shows that failing to account for delays can lead to under- or over-estimates of the fresh air supply, depending on whether the decay rate calculation includes the duct volume

189

PERFORMANCE OF AN EXPERIMENTAL SOLAR-DRIVEN ABSORPTION AIR CONDITIONER--ANNUAL REPORT JULY 1975-SEPT. 1976  

E-Print Network (OSTI)

F for removing heat from the condenser and absorber coils.temperature. Air-cooled condensers and absorbers are limitedfor water- cooling the condenser was an overriding concern

Dao, K.

2010-01-01T23:59:59.000Z

190

Solar-Powered, Liquid-Desiccant Air Conditioner for Low-Electricity Humidity Control: Report and Summary Report  

DOE Green Energy (OSTI)

The primary objective of this project was to demonstrate the capabilities of a new high-performance, liquid-desiccant dedicated outdoor air system (DOAS) to enhance cooling efficiency and comfort in humid climates while substantially reducing electric peak demand at Tyndall Air Force Base (AFB), which is 12 miles east of Panama City, Florida.

Dean, J.; Kozubal, E.; Herrmann, L.; Miller, J.; Lowenstein, A.; Barker, G.; Slayzak, S.

2012-11-01T23:59:59.000Z

191

Laser sheet light flow visualization for evaluating room air flowsfrom Registers  

SciTech Connect

Forced air heating and cooling systems and whole house ventilation systems deliver air to individual rooms in a house via supply registers located on walls ceilings or floors; and occasionally less straightforward locations like toe-kicks below cabinets. Ideally, the air velocity out of the registers combined with the turbulence of the flow, vectoring of air by register vanes and geometry of register placement combine to mix the supply air within the room. A particular issue that has been raised recently is the performance of multiple capacity and air flow HVAC systems. These systems vary the air flow rate through the distribution system depending on the system load, or if operating in a ventilation rather than a space conditioning mode. These systems have been developed to maximize equipment efficiency, however, the high efficiency ratings do not include any room mixing effects. At lower air flow rates, there is the possibility that room air will be poorly mixed, leading to thermal stratification and reduced comfort for occupants. This can lead to increased energy use as the occupants adjust the thermostat settings to compensate and parts of the conditioned space have higher envelope temperature differences than for the well mixed case. In addition, lack of comfort can be a barrier to market acceptance of these higher efficiency systems To investigate the effect on room mixing of reduced air flow rates requires the measurement of mixing of supply air with room air throughout the space to be conditioned. This is a particularly difficult exercise if we want to determine the transient performance of the space conditioning system. Full scale experiments can be done in special test chambers, but the spatial resolution required to fully examine the mixing problem is usually limited by the sheer number of thermal sensors required. Current full-scale laboratory testing is therefore severely limited in its resolution. As an alternative, we used a water-filled scale model of a room in which whole-field supply air mixing maps of two vertical planes were measured using a Planar Laser-Induced Fluorescence (PLIF) measurement technique. Water marked with fluorescent dye was used to simulate the supply airflow; and the resulting concentrations within the water filled model show how the supply air mixes with the room air and are an analog for temperature (for thermal loads) or fresh air (for ventilation). In addition to performing experiments over a range of flow rates, we also changed register locations and examined the effects for both heating and cooling operation by changing the water density (simulating air density changes due to temperature changes) using dissolved salt.

Walker, Iain S.; Claret, Valerie; Smith, Brian

2006-04-01T23:59:59.000Z

192

Numerical method for computing nonlinear, time dependent, buoyant circulation of air in rooms  

Science Conference Proceedings (OSTI)

A method is described which solves the dynamic equations for air circulation at Grashof numbers that are in the range of environmental temperatures of rooms. Previous two-dimensional computation techniques were limited to G ? 105 ...

J. E. Fromm

1971-05-01T23:59:59.000Z

193

PERFORMANCE OF AN EXPERIMENTAL SOLAR-DRIVEN ABSORPTION AIR CONDITIONER--ANNUAL REPORT JULY 1975-SEPT. 1976  

E-Print Network (OSTI)

Size and Type of the Heat Exchangers Air Cooled Condensora packed-tower counterflow heat exchanger for the generator.to strong solution heat exchanger) was added. iv. The

Dao, K.

2010-01-01T23:59:59.000Z

194

Effect of room air recirculation delay on the decay rate of tracer gas  

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

Effect of room air recirculation delay on the decay rate of tracer gas Effect of room air recirculation delay on the decay rate of tracer gas concentration Title Effect of room air recirculation delay on the decay rate of tracer gas concentration Publication Type Journal Article Year of Publication 2007 Authors Lorenzetti, David M., Astrid H. Kristoffersen, and Ashok J. Gadgil Journal Indoor Air Pagination 7 Keywords recirculating ventilation, tracer decay rate Abstract Tracer gas measurements are used to estimate the flow rate of fresh air into a room or building. These methods commonly account for the decay of tracer gas concentration as the result of ventilation air supply and infiltration, using a well-mixed model of the space. Some researchers also have considered the effect of leakage in the ventilation ductwork. This paper considers the effect of recirculation through ventilation ducts on the calculated fresh air supply rate. Transport delay in the ducts can significantly alter the time evolution of tracer concentration, and hence alter the estimated air change rate.

195

THE CONSTRUCTION AND OPERATION OF EXPERIMENTAL ROOMS FOR THE STUDY OF AIR-BORNE INFECTION*  

E-Print Network (OSTI)

In order to carry out adequately controlled studies on the effects of temperature and humidity on the behavior of bacteria and viruses suspended in the air under various experimental conditions, it became necessary to have available enclosed spaces in which any desired atmospheric state could be produced and maintained. The use of conventional methods of air conditioning is unsuitable for this purpose because all of these depend upon exchange of the air inside the experimental space with conditioned air. Hence, two identical air-tight, glass-walled rooms 8 feet X 10 feet and 8 feet high were built each within a separate air-conditioned shell which can be kept constantly at any temperature and relative humidity likely to be encountered in spaces occupied by human beings. Rapid circulation of the conditioned air over all surfaces of the inner room provides a sufficiently high rate of heat transfer to insure constant temperature conditions within that space. The relative humidity of the inner room can be maintained at the same level as the air of the outer shell or can be increased by the introduction of steam. Two rooms provide much greater

O. H. Robertson; Theodore T. Puck, Ph.D.; Henry Wise

1946-01-01T23:59:59.000Z

196

2005 Status Report Savings Estimates for the ENERGY STAR(R) Voluntary Labeling Program  

E-Print Network (OSTI)

Exit Signs Dishwashers Room Airclothes washers, dishwashers, room air conditioners (RACs),clothes washers, dishwashers, and room air conditioners (

Webber, Carrie A.; Brown, Richard E.; Sanchez, Marla

2006-01-01T23:59:59.000Z

197

NREL Demonstrates Game-Changing Air Conditioner Technology (Fact Sheet), Highlights in Research & Development, NREL (National Renewable Energy Laboratory)  

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

Testing of DEVAP prototype validates modeled Testing of DEVAP prototype validates modeled predictions of 40% to 85% energy savings. Researchers in the NREL Buildings group are moving the award-winning desiccant enhanced evaporative (DEVAP) air conditioning technol- ogy further toward commercialization by demonstrating that its energy-saving perfor- mance matches closely with thermodynamic model predictions. Industry partners Synapse Product Development and AIL Research built two prototypes of DEVAP based on NREL's design and modeling, which were tested in NREL's Advanced HVAC Systems Laboratory. Experiments added confidence to the predicted energy savings of 40% in humid climates and 85% in dry climates, empowering the model as a tool for developing marketable designs, and illustrating the potential of DEVAP to transform

198

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

E-Print Network (OSTI)

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

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

2006-01-01T23:59:59.000Z

199

Central Air Conditioners","Heat Pumps","Individual Air Conditioners...  

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

4,89,294,9,26,327,47,4 "District Heat ...",96,77,3,4,16,39,15,35,"Q","Q" "Boilers ...",581,474,58,39,211,3,96,223,18,14 "Packaged Heating Units...

200

2004 status report: Savings estimates for the Energy Star(R) voluntarylabeling program  

E-Print Network (OSTI)

air conditioners and dishwashers. Because energy efficiencyWashers. Y Dishwashers Y Room Airclothes washers, dishwashers, room air conditioners (RACs),

Webber, Carrie A.; Brown, Richard E.; McWhinney, Marla

2004-01-01T23:59:59.000Z

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


201

2007 Status Report: Savings Estimates for the ENERGY STAR(R) VoluntaryLabeling Program  

E-Print Network (OSTI)

Telephony.. 2002 Dishwashers 1996 a Hotclothes washers, dishwashers, room air conditioners (RACs),clothes washers, dishwashers, and room air conditioners (

Sanchez, Marla; Webber, Carrie A.; Brown, Richard E.; Homan, Gregory K.

2007-01-01T23:59:59.000Z

202

Candidate chemical systems for air cooled, solar powered, absorption air conditioner design. Part III. Lithium salts with anti-freeze additives  

DOE Green Energy (OSTI)

The two most promising anti-solidification additives which have been identified are ethanolamine and ethylene glycol. Considerations of viscosity, corrosion, crystallization temperature and vapor pressure have led to a selection of lithium bromide - ethylene glycol - water as the basis of a prototype air-cooled machine, with the lithium bromide; ethylene glycol ratio being 4.5. Using what appear to be reasonable heat exchanger approach temperatures, cycle thermal COP's of 0.7/sup +/ appear possible at the specified design point, based on solution properties which were determined with qualification accuracy. The prototype, delivering 10,000 watts of cooling, has a calculated parasitical electrical load of about 175 watts (theoretical) to drive the internal fans and pumps, equivalent to about a 0.5 horsepower motor.

Biermann, W.J.

1978-06-01T23:59:59.000Z

203

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

E-Print Network (OSTI)

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

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

2003-01-01T23:59:59.000Z

204

MULTI - TRACER CONTROL ROOM AIR INLEAKAGE PROTOCOL AND SIMULATED PRIMARY AND EXTENDED MULTI - ZONE RESULTS.  

SciTech Connect

The perfluorocarbon tracer (PFT) technology can be applied simultaneously to the wide range in zonal flowrates (from tens of cfms in some Control Rooms to almost 1,000,000 cfm in Turbine Buildings), to achieve the necessary uniform tagging for subsequent determination of the desired air inleakage and outleakage from all zones surrounding a plant's Control Room (CR). New types of PFT sources (Mega sources) were devised and tested to handle the unusually large flowrates in a number of HVAC zones in power stations. A review of the plans of a particular nuclear power plant and subsequent simulations of the tagging and sampling results confirm that the technology can provide the necessary concentration measurement data to allow the important ventilation pathways involving the Control Room and its air flow communications with all adjacent zones to be quantitatively determined with minimal uncertainty. Depending on need, a simple single or 3-zone scheme (involving the Control Room alone or along with the Aux. Bldg. and Turbine Bldg.) or a more complex test involving up to 7 zones simultaneously can be accommodated with the current revisions to the technology; to test all the possible flow pathways, several different combinations of up to 7 zones would need to be run. The potential exists that for an appropriate investment, in about 2 years, it would be possible to completely evaluate an entire power plant in a single extended multizone test with up to 12 to 13 separate HVAC zones. With multiple samplers in the Control Room near each of the contiguous zones, not only will the prevalent inleakage or outleakage zones be documented, but the particular location of the pathway's room of ingress can be identified. The suggested protocol is to perform a 3-zone test involving the Control Room, Aux. Bldg., and Turbine Bldg. to (1) verify CR total inleakage and (2) proportion that inleakage to distinguish that from the other 2 major buildings and any remaining untagged locations. These results would then direct the next subsequent tests. Final results would point to where mitigation steps should be initiated. Protocols for repeat testing as well as long term continual testing are suggested.

DIETZ,R.N.

2002-01-01T23:59:59.000Z

205

Air Conditioning | Department of Energy  

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

Conditioning Conditioning Air Conditioning July 1, 2012 - 6:28pm Addthis Air conditioners cost U.S. homeowners more than $11 billion each year, and regular maintenance can keep your air conditioner running efficiently. | Photo courtesy of ©iStockphoto/JaniceRichard Air conditioners cost U.S. homeowners more than $11 billion each year, and regular maintenance can keep your air conditioner running efficiently. | Photo courtesy of ©iStockphoto/JaniceRichard How does it work? An air conditioner uses energy -- usually electricity -- to transfer heat from the interior of your home to the relatively warm outside environment. Two-thirds of all homes in the United States have air conditioners. Air conditioners use about 5% of all the electricity produced in the United States, at an annual cost of more than $11 billion to homeowners. As a

206

A thermal comfort levels investigation of a naturally ventilated and air-conditioned office  

Science Conference Proceedings (OSTI)

The purpose of this study is to investigate thermal comfort levels of a naturally ventilated and air-conditioner office. Field experiments conducted in an office room in Universiti Putra Malaysia (UPM) used survey questionnaires and physical measurements. ... Keywords: PMV, mechanically ventilation, naturally ventilated, neutral temperature, objective study, subjective approach, thermal comfort

R. Daghigh; N. M. Adam; K. Sopian; A. Zaharim; B. B. Sahari

2008-09-01T23:59:59.000Z

207

Energy Savings in Buildings Using Air Movement and Allowing Floating Temperature in Rooms  

E-Print Network (OSTI)

The purpose of the research study was to determine if building loads could be reduced by using an intelligent controller rather than a thermostatic controller to operate heating and air conditioning equipment. In order to switch the equipment on and off at the proper times, the intelligent controller calculated temperature limits using a mathematical procedure that determined the percentage of people who would be comfortable in rooms of the building. Simulations showed the annual cost savings from intelligent controllers ranged from 6 to 37 percent for residences and from 6 to 29 percent for the offices. An ancillary study showed that a ceiling fan provided comfort in a 112 square foot floor area to 85 F and in a 200 to 250 square foot area to 82 F.

Spain, S.

1985-01-01T23:59:59.000Z

208

Homeowner's Guide to Window Air Conditioner Installation for Efficiency and Comfort (Fact Sheet), Building America Case Study: Technology Solutions for Existing Homes, Building Technologies Office (BTO)  

SciTech Connect

This fact sheet offers a step-by-step guide to proper installation of window air conditioning units, in order to improve efficiency and comfort for homeowners.

Not Available

2013-06-01T23:59:59.000Z

209

Airflow Simulation and Energy Analysis in Ventilated Room with a New Type of Air Conditioning  

E-Print Network (OSTI)

Airflow simulation in one ventilated room with radiant heating and natural ventilation has been carried out. Three cases are compared: the closed room, the room with full openings, and the room with small openings. The radiator heating room with small openings is recommended. The airflow and thermal comfort are discussed for the last case. It is suitable for two kinds of civil buildings, housing buildings and office buildings, which take up the largest part of all functional buildings.

Liu, D.; Tang, G.; Zhao, F.

2006-01-01T23:59:59.000Z

210

Enabling Energy-Efficient Approaches to Thermal Comfort Using Room Air Motion  

E-Print Network (OSTI)

Energy Efficiency, Thermal Comfort with Air MotionEnergy Efficiency, Thermal Comfort with Air Motion No-fan 2Energy Efficiency, Thermal Comfort with Air Motion

Pasut, Wilmer; Arens, Edward; Zhang, Hui; Kaam, Soazig; Zhai, Yongchao

2013-01-01T23:59:59.000Z

211

How the Number and Placement of Sensors Controlling Room Air Distribution Systems Affect Energy Use and Comfort  

E-Print Network (OSTI)

This study assesses the impact of sensor number and placement on the energy needed to condition a typical office using several likely variants of an underfloor air distribution system (UFAD). The study uses an empirical-based room stratification model developed from full-scale tests of UFAD systems. Annual energy consumption is calculated for an interior zone using outside air temperature bin data. The comfort criteria are taken from ASHRAE standard 55-92. The simulations indicate that there are benefits derived from using more than one temperature sensor to control conditions in the occupied zone of a room. Among these are: 1. By adjusting both supply air temperature and volume to maintain the maximum allowable thermal gradient in the occupied (lower) part of the room, an optimal supply air condition can reduce energy use (relative to the best arrangement of a single sensor) while maintaining comfort; 2. Discomfort caused by stratification can be detected by having one of the sensors located at foot level; 3. For the simulated UFAD interior zone of a typical office building in Sacramento, an overall energy saving of 8%/24% (VAV/CAV respectively) can be achieved when two sensors as opposed to one are used to control room conditions.

Wang, D.; Arens, E.; Webster, T.; Shi, M.

2002-01-01T23:59:59.000Z

212

Fuzzy expert system design for operating room air-condition control systems  

Science Conference Proceedings (OSTI)

In this study, a controlled fuzzy expert system (FES) was designed to provide the conditions necessary for operating rooms. For this purpose, existing operating rooms have been studied to see if there are more useful, reliable and comfortable ones. How ... Keywords: Adaptive fuzzy control, Expert systems, Fuzzy control systems, Operating room control

Nazmi Etik; Novruz Allahverdi; Ibrahim Unal Sert; Ismail Saritas

2009-08-01T23:59:59.000Z

213

Tips: Air Ducts | Department of Energy  

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

Air Ducts Air Ducts Tips: Air Ducts June 24, 2013 - 7:23pm Addthis Air Ducts: Out of Sight, Out of Mind. The unsealed ducts in your attic and crawlspaces lose air, and uninsulated ducts lose heat -- wasting energy and money. Air Ducts: Out of Sight, Out of Mind. The unsealed ducts in your attic and crawlspaces lose air, and uninsulated ducts lose heat -- wasting energy and money. Your air ducts are one of the most important systems in your home, and if the ducts are poorly sealed or insulated they are likely contributing to higher energy bills. Your home's duct system is a branching network of tubes in the walls, floors, and ceilings; it carries the air from your home's furnace and central air conditioner to each room. Ducts are made of sheet metal, fiberglass, or other materials.

214

Air Conditioning | Department of Energy  

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

environment. An air conditioner uses a cold indoor coil called the evaporator. The condenser, a hot outdoor coil, releases the collected heat outside. The evaporator and...

215

Upgrading of the Air-conditioning of the Computer Room in the Computer Centre for the LHC era  

E-Print Network (OSTI)

Built in the beginning of 1970's, the Computer Centre air-conditioning and cooling systems were designed to be modular and easily adaptable to the unpredictable future needs of computing. The infrastructure of LHC-computing that will be housed in the existing Computer Room with its five Computing farms and over 11000 PC's increases the requirements of cooling and air-conditioning power to a new level. The nominal thermal loads from the equipment rise from the current design maximum of 1MW to estimated maximum of 2MW in the future. This paper presents calculations and proposes solutions to meet the new nominal requirements. The air-conditioning system must also be able to cope with a situation of power cut in the main supply. A calculation of the temperature evolution during the power cut and a justified operation strategy for this scenario is also presented.

Lindroos, J

2001-01-01T23:59:59.000Z

216

Technical support document: Energy efficiency standards for consumer products: Room air conditioners, water heaters, direct heating equipment, mobile home furnaces, kitchen ranges and ovens, pool heaters, fluorescent lamp ballasts and television sets. Volume 2, Fluorescent lamp ballasts, television sets, room air conditioners, and kitchen ranges and ovens  

SciTech Connect

This document is divided into ``volumes`` B through E, dealing with individual classes of consumer products. Chapters in each present engineering analysis, base case forecasts, projected national impacts of standards, life-cycle costs and payback periods, impacts on manufacturers, impacts of standards on electric utilities, and environmental effects. Supporting appendices are included.

Not Available

1993-11-01T23:59:59.000Z

217

Enabling Energy-Efficient Approaches to Thermal Comfort Using Room Air Motion  

E-Print Network (OSTI)

that almost all the configuration with fan (except the twovelocity level 3 oscillating-fan configurations) performedto the configuration without fan. Air Quality Acceptance

Pasut, Wilmer; Arens, Edward; Zhang, Hui; Kaam, Soazig; Zhai, Yongchao

2013-01-01T23:59:59.000Z

218

EVALUATION OF A NEW SOLAR AIR CONDITIONER  

E-Print Network (OSTI)

with Dennis Hughes, FNBO, 2010. 9. U.S. EPA, eGrid 2007 Version 1.1, Year 2005 Summary Tables, Region MRO West (fossil fuel output). http://www. epa.gov/cleanenergy/energy-resources/ egrid/index.html (accessed

219

List of Compressed air Incentives | Open Energy Information  

Open Energy Info (EERE)

Energy Efficiency Incentive Program (Texas) Local Grant Program Texas Commercial Ceiling Fan Central Air conditioners Chillers Comprehensive MeasuresWhole Building Compressed air...

220

Enabling Energy-Efficient Approaches to Thermal Comfort Using Room Air Motion  

E-Print Network (OSTI)

uc/item/4488d1b8 Energy Efficiency, Thermal Comfort with Airuc/item/4488d1b8 Energy Efficiency, Thermal Comfort with Airuc/item/4488d1b8 Energy Efficiency, Thermal Comfort with Air

Pasut, Wilmer; Arens, Edward; Zhang, Hui; Kaam, Soazig; Zhai, Yongchao

2013-01-01T23:59:59.000Z

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


221

Investigation of air supply conditions in the room of a B11type gas appliance  

Science Conference Proceedings (OSTI)

In Hungary, the prevalently used "B11" type gas appliances equipped with atmospheric burner and they have a draught hood beyond the outlet of the appliance. For the appropriate adjustment of the gas boiler to the conditions of the building, ... Keywords: CFD method, air supply, chimney, design requirements, gas appliances, numerical modelling

Lajos Barna; Rbert Goda

2007-05-01T23:59:59.000Z

222

Low-noise pulse conditioner  

DOE Patents (OSTI)

A low-noise pulse conditioner is provided for driving electronic digital processing circuitry directly from differentially induced input pulses. The circuit uses a unique differential-to-peak detector circuit to generate a dynamic reference signal proportional to the input peak voltage. The input pulses are compared with the reference signal in an input network which operates in full differential mode with only a passive input filter. This reduces the introduction of circuit-induced noise, or jitter, generated in ground referenced input elements normally used in pulse conditioning circuits, especially speed transducer processing circuits. This circuit may be used for conditioning the sensor signal from the Fidler coil in a gas centrifuge for separation of isotopic gaseous mixtures.

Bird, D.A.

1981-06-16T23:59:59.000Z

223

Research on the Integration Characteristics of Cooling Energy Recovery from Room Exhausting Cool Air in Summer  

E-Print Network (OSTI)

Currently, the design and construction of buildings and building energy systems are far from reasonable. The requirement and consumption of primary energy resources is aggravated, the use of building energy is free and wasteful, and pollution of the earth's atmosphere from building energy consumption is also aggravated. Therefore, the research and applications of energy efficiency and environmentally benign building energy systems are very important and urgent. Until now, much work on building energy conservation methods, measures and evaluations have been done by people in many countries. Some theoretical achievements have been already put into practice, but most of them put undue emphasis on some parts of the whole system. The complete idea of building energy conservation by integrating the building energy systems has not been put forward, and unequivocal guidance and a complete evaluation index and theoretical system for building energy consumption and its impact on the environment have not been formed. In this paper, we make further suggestions for improvement, and present some new concepts such as building energy flow, building mass flow, couple recovering of building discharge energy, integrated system of building energy , factor of building energy integration I, and effect factor on atmospheric environment of building energy F. The positive effects of these new concepts and methods on traditional approaches are also predicted. Theoretical research on an energy recovery unit that recovers cooling energy from indoor exhausting cool air in summer has been done in this paper, and demonstrates great advantages of its integration characteristics of building thermal systems.

Zhang, W.; Wu, J.; Wei, Y.

2006-01-01T23:59:59.000Z

224

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

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

to Air-Con International finding that a variety of central air conditioners and air conditioning heat pumps distributed under the Air-Con private label do not comport...

225

Interaction of Plutonium with Diverse Materials in Moist Air and Nitrogen-Argon Atmospheres at Room Temperature  

DOE Green Energy (OSTI)

Chemical and radiolytic interactions of weapons-grade plutonium with metallic, inorganic, and hydrogenous materials in atmospheres containing moist air-argon mixtures have been characterized at room temperature from pressure-volume-temperature and mass spectrometric measurements of the gas phase. A reaction sequence controlled by kinetics and gas-phase composition is defined by correlating observed and known reaction rates. In all cases, O{sub 2} is eliminated first by the water-catalyzed Pu + O{sub 2} reaction and H{sub 2}O is then consumed by the Pu + H{sub 2}O reaction, producing a gas mixture of N{sub 2}, argon, and H{sub 2}. Hydrogen formed by the reaction of water and concurrent radiolysis of hydrogenous materials either reacts to form PuH{sub 2} or accumulates in the system. Accumulation of H{sub 2} is correlated with the presence of hydrogenous materials in liquid and volatile forms that are readily distributed over the plutonium surface. Areal rates of radiolytic H{sub 2} generation are determined and applied in showing that modest extents of H{sub 2} production are expected for hydrogenous solids if the contact area with plutonium is limited. The unpredictable nature of complex chemical systems is demonstrated by occurrence of the chloride-catalyzed Pu + H{sub 2}O reaction in some tests and hydride-catalyzed nitriding in another.

John M. Haschke; Raymond J. Martinez; Robert E. Pruner II; Barbara Martinez; Thomas H. Allen

2001-04-01T23:59:59.000Z

226

HEATING, AIR-CONDITIONING AND REFRIGERATION DISTRIBUTORS INTERNATIONAL (HARDI)  

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

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

227

Documentation of Calculation Methodology, Input data, and Infrastructure for the Home Energy Saver Web Site  

E-Print Network (OSTI)

heat pump (heating) Electric baseboard heater Gas boilerOil boiler Central air conditioner Room air conditioner18 3.1.6.1 Boiler Pipe

2005-01-01T23:59:59.000Z

228

Air-Conditioning Basics | Department of Energy  

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

Air-Conditioning Basics Air-Conditioning Basics Air-Conditioning Basics August 16, 2013 - 1:59pm Addthis Air conditioning is one of the most common ways to cool homes and buildings. How Air Conditioners Work Air conditioners employ the same operating principles and basic components as refrigerators. Refrigerators use energy (usually electricity) to transfer heat from the cool interior of the refrigerator to the relatively warm surroundings; likewise, an air conditioner uses energy to transfer heat from the interior space to the relatively warm outside environment. An air conditioner uses a cold indoor coil called the evaporator. The condenser, a hot outdoor coil, releases the collected heat outside. The evaporator and condenser coils are serpentine tubing surrounded by aluminum fins. This tubing is usually made of copper.

229

Homeowner's Guide to Window Air Conditioner Installation for Efficiency and Comfort (Fact Sheet), Building America Case Study: Technology Solutions for Existing Homes, Building Technologies Office (BTO)  

SciTech Connect

This fact sheet offers a step-by-step guide to proper installation of window air conditioning units, in order to improve efficiency and comfort for homeowners.

2013-06-01T23:59:59.000Z

230

Building Energy Software Tools Directory: Tools by Country -...  

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

room, cooler, freezer, refrigerated warehouse Software has been updated. Cool Room Calc cooling load, heat gains, heat loads, air-conditioned room, air conditioner, HVAC, air...

231

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

SciTech Connect

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.

McNeil, Michael A.; Letschert, Virginie E.

2007-05-01T23:59:59.000Z

232

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

SciTech Connect

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.

McNeil, Michael A.; Letschert, Virginie E.

2007-05-01T23:59:59.000Z

233

Unified power quality conditioner for grid integration of wind generators.  

E-Print Network (OSTI)

?? A Unified Power Quality Conditioner (UPQC) is relatively a new member of the custom power device family. It is a comprehensive custom power device, (more)

Ganesh, Jayanti Navilgone, (Thesis)

2008-01-01T23:59:59.000Z

234

Central Air Conditioning | Department of Energy  

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

Central Air Conditioning Central Air Conditioning Central Air Conditioning May 30, 2012 - 8:01pm Addthis Central air conditioners circulate cool air through a system of supply and return ducts. | Photo courtesy of ©iStockphoto/DonNichols. Central air conditioners circulate cool air through a system of supply and return ducts. | Photo courtesy of ©iStockphoto/DonNichols. What does this mean for me? Central air conditioning systems are thermostatically controlled and convenient to use. Central air conditioning systems must be installed properly to operate efficiently. Central air conditioning systems can share ductwork with your heating system. Central air conditioners circulate cool air through a system of supply and return ducts. Supply ducts and registers (i.e., openings in the walls,

235

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

E-Print Network (OSTI)

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

2012-01-01T23:59:59.000Z

236

Table Contents Page i 2013 Nonresidential Compliance Manual January 2014  

E-Print Network (OSTI)

Table B-1 Room Air Conditioner, Room Air-Conditioning Heat Pump, Packaged Terminal Air Conditioner, and Packaged Terminal Heat Pump Test Methods.....................................................3 Table C-1...........................................4 Table E-1 Gas and Oil Space Heater Test Methods

237

A P P L I A N C E EFFICIENCY REGULATIONS  

E-Print Network (OSTI)

Test Methods...........................40 B-1 Room Air Conditioner, Room Air-Conditioning Heat Pump, Packaged Terminal Air Conditioner, and Packaged Terminal Heat Pump Test Methods ......................41 C.....................................................................................42 E-1 Gas and Oil Space Heater Test Methods

238

A P P L I A N C E August, 2003  

E-Print Network (OSTI)

Test Methods........................... 40 B-1 Room Air Conditioner, Room Air-Conditioning Heat Pump, Packaged Terminal Air Conditioner, and Packaged Terminal Heat Pump Test Methods....................... 41 C ...................................................................................... 42 E-1 Gas and Oil Space Heater Test Methods

239

NREL: Technology Transfer - NREL Tests Advanced Air Conditioner ...  

The Coolerado H-80 easily surpassed the challenge's objective of exceeding DOE 2010 efficiency standards by 40%.

240

DEVELOPMENT OF SOLAR DRIVEN ABSORPTION AIR CONDITIONERS AND HEAT PUMPS  

E-Print Network (OSTI)

the Annual DOE Active Solar Heating and Cooling Contractors'and Annual DOE Active Solar Heating and Cooling Contractors'refrigeration systems for solar active heating and cooling

Dao, K.

2013-01-01T23:59:59.000Z

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


241

Determining benefits and costs of improved central air conditioner efficiencies  

E-Print Network (OSTI)

of Energy, DRAFT Marginal Energy Prices Report, July, 1999.energy use by the energy price paid by the household.energy consumption, energy price, discount rate, and central

Rosenquist, G.

2010-01-01T23:59:59.000Z

242

DEVELOPMENT OF SOLAR DRIVEN ABSORPTION AIR CONDITIONERS AND HEAT PUMPS  

E-Print Network (OSTI)

of the University of California, nor any of their employees,of the University of California. The views and opinions ofof the University of California. DEVELOPMENT OF SOLAR DRIVEN

Dao, K.

2013-01-01T23:59:59.000Z

243

Building Technologies Office: Central Air Conditioner and Heat...  

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

Energy Use to Save Money. Learn More. News DOE Issues Notice of Proposed Rulemaking for Commercial Refrigeration Equipment Energy Conservation Standard August 29, 2013 DOE Issues...

244

NREL Solves Residential Window Air Conditioner Performance Limitations (Fact Sheet)  

SciTech Connect

Comprehensive performance tests lead to enhanced modeling capability and affordable methods to increase energy efficiency.

Not Available

2013-05-01T23:59:59.000Z

245

Measuring Short-term Air Conditioner Demand Reductions for Operations...  

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

frequently without affecting customer comfort. A key issue for grid operations and electricity market settlement is how to accurately measure shorter-term (e.g., ten's of...

246

Laboratory Performance Testing of Residential Window Mounted Air Conditioners  

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

This presentation was delivered at the U.S. Department of Energy Building America Technical Update meeting on April 29-30, 2013, in Denver, Colorado.

247

Distribution substation load impacts of residential air conditioner load control  

SciTech Connect

An ongoing experiment to monitor the substation level load impacts of end-use load control is described. An overview of the data acquisition system, experimental procedures and analysis techniques are provided. Results of the 1983 and 1984 experiments demonstrate the value of aggregate load impact monitoring as a means of verifying load research results, calculating the diversity of end-use loads, and predicting the impacts of load management on the transmission and distribution systems.

Heffner, G.C.; Kaufman, D.A.

1985-07-01T23:59:59.000Z

248

Determining benefits and costs of improved central air conditioner efficiencies  

E-Print Network (OSTI)

Richland, WA. Report No. PNNL- 7. U.S. Department of Energy,National Laboratory (PNNL) using the Building Loads andADL), and David Winiarski (PNNL). This work was supported by

Rosenquist, G.

2010-01-01T23:59:59.000Z

249

YMGI Through-the-Wall Air Conditioner Determined Noncompliant...  

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

testing revealed that this model operates at a Seasonal Energy Efficiency Rating (SEER) of 8.3. The current federal standard requires that through-the-wall split system...

250

Fault Detection and Diagnosis for Air-Conditioners and Heat ...  

Science Conference Proceedings (OSTI)

... Calculation of the energetic metric will include weather data to weight the ... and rooftop units and will promote market implementation of FDD tools. ...

2012-12-17T23:59:59.000Z

251

Air Conditioner Efficiency Under Hot Dry and Hot Humid Conditions  

Science Conference Proceedings (OSTI)

The seasonal energy efficiency ratio (or SEER) has been the subject of extensive research, development, use, and revision for over 30 years. This report gives a review of the past, present, and future of SEER. This review is needed to provide a common background and perspective in response to a move away from one national standard to three standards. Recommendations are made for what electric utilities can do in response to the challenges and opportunities presented by regional climate-sensitive SEERs.

2008-06-23T23:59:59.000Z

252

Determining benefits and costs of improved central air conditioner efficiencies  

E-Print Network (OSTI)

for major household appliances. Any new or amended standardcosts), lifetime of the appliance, and a discount rate. LCCconsumers use in purchasing appliances. Consumers purchase

Rosenquist, G.

2010-01-01T23:59:59.000Z

253

Structure, optical, and electrical properties of indium tin oxide thin films prepared by sputtering at room temperature and annealed in air or nitrogen  

Science Conference Proceedings (OSTI)

Indium tin oxide (ITO) thin films have been grown onto soda-lime glass substrates by sputtering at room temperature with various oxygen to argon partial pressure ratios. After deposition, the samples have been annealed at temperatures ranging from 100 to 500 degree sign C in nitrogen or in air. The structure, optical, and electrical characteristics of the ITO coatings have been analyzed as a function of the deposition and the annealing parameters by x-ray diffraction, spectrophotometry, and Hall effect measurements. It has been found that the as-grown amorphous layers crystallize in the cubic structure by heating above 200 degree sign C. Simultaneously, the visible optical transmittance increases and the electrical resistance decreases, in proportions that depend mainly on the sputtering conditions. The lowest resistivity values have been obtained by annealing at 400 degree sign C in nitrogen, where the highest carrier concentrations are achieved, related to oxygen vacancy creation. Some relationships between the analyzed properties have been established, showing the dependence of the cubic lattice distortion and the infrared optical characteristics on the carrier concentration.

Guillen, C.; Herrero, J. [Departamento de Energia, CIEMAT, Avda Complutense 22, 28040 Madrid (Spain)

2007-04-01T23:59:59.000Z

254

Alliant Energy Interstate Power and Light (Electric) - Residential...  

Open Energy Info (EERE)

Heat pumps, Lighting, Programmable Thermostats, Refrigerators, Water Heaters, Windows, Room Air Conditioners, Geothermal Heat Pumps, Appliance Recycling, Home Energy...

255

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

SciTech Connect

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.

Kozubal, E.

2013-02-01T23:59:59.000Z

256

Automobile air-conditioning unit. Final report  

SciTech Connect

In this study the refrigerant in the automobile air-conditioner is compressed by thermal energy in a unique compression system rather than by work in a standard compressor. The compression uses an intermittent compression process with a solid absorbent. The vapor is absorbed by an absorbent at relatively low temperature and ejected as the absorbent temperature is raised. A set of one way valves limits flow to one direction. Major contributions are heat transfer requirements, molecular sieve-refrigerant matching, minimizing non-producing mass, solving thermal fatigue and shock problems, and applying this to automobile air-conditioning. The performance study shows energy savings up to fifty percent are possible, depending on engine load. A twenty percent energy savings with the vehicle tested with the air-conditioner in operation is average. The study also showed that less fuel is used with the windows open than with the air-conditioner operating.

Schaetzle, W.J.

1982-12-01T23:59:59.000Z

257

Troubleshooting the residential air conditioning system  

Science Conference Proceedings (OSTI)

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

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

1996-01-01T23:59:59.000Z

258

DOE Requires Air-Con International to Cease Sales of Inefficient Air  

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

Requires Air-Con International to Cease Sales of Inefficient Requires Air-Con International to Cease Sales of Inefficient Air Conditioners and Proposes Penalties DOE Requires Air-Con International to Cease Sales of Inefficient Air Conditioners and Proposes Penalties September 21, 2010 - 6:43pm Addthis The Department has issued a Notice of Noncompliance Determination and Proposed Civil Penalty to Air-Con, International, requiring Air-Con to cease the sale of certain air-conditioning systems in the United States and proposing a civil penalty of $231,090 for sales of these products in violation of the applicable energy efficiency standards. This action reflects the Department's continued commitment to act aggressively to remove unlawful products from the market. In March, 2010, the Department issued a subpoena requiring Air-Con to

259

Predictions of thermal comfort and pollutant distributions for a thermostatically-controlled, air-conditioned, partitioned room: Numerical results and enhanced graphical presentation  

SciTech Connect

An index of local thermal comfort and pollutant distributions have been computed with the TEMPEST computer code, in a transient simulation of an air-conditioned enclosure with an incomplete partition. This complex three-dimensional air conditioning problem included forced ventilation through inlet veins, flow through a partition, remote return air vents, and infiltration source, a pollutant source, and a thermostatically controlled air conditioning system. Five forced ventilation schemes that varied in vent areas and face velocities were simulated. Thermal comfort was modeled as a three-dimensional scalar field dependent on the fluid velocity and temperature fields; where humidity activity levels, and clothing were considered constants. Pollutants transport was incorporated through an additional constituent diffusion equation. Six distinct graphic techniques for the visualization of the three-dimensional data fields of air velocity, temperature, and comfort index were tested. 4 refs., 7 figs., 1 tab.

White, M.D.; Eyler, L.L.

1989-05-01T23:59:59.000Z

260

energy efficiency | OpenEI  

Open Energy Info (EERE)

Keywords air conditioners cooling capacity EER energy efficiency Energy Efficiency Ratio room air conditioners Data applicationvnd.ms-excel icon brand.xls (xls, 122.9 KiB)...

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


261

Stronger Manufacturers' Energy Efficiency Standards for Residential Air  

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

Stronger Manufacturers' Energy Efficiency Standards for Residential Stronger Manufacturers' Energy Efficiency Standards for Residential Air Conditioners Go Into Effect Today Stronger Manufacturers' Energy Efficiency Standards for Residential Air Conditioners Go Into Effect Today January 23, 2006 - 11:09am Addthis WASHINGTON, DC -- To increase the energy efficiency of residential air conditioners, the U.S. Department of Energy (DOE) has issued new manufacturing standards that go into effect today, January 23, 2006, for products manufactured in, or imported into, the United States. "Homeowners who choose to buy more energy-efficient air conditioning systems after today will realize significant savings in their energy bills and greatly reduce their energy use," said Secretary of Energy Samuel W. Bodman. "These new energy efficiency standards are the first of several

262

State-of-the-Art in Residential and Small Commercial Air HandlerPerformance  

SciTech Connect

Although furnaces, air conditioners, and heat pumps have become significantly more efficient over the last couple of decades, residential air handlers have typical efficiencies of only 10% to 15% due to poor electric motor and aerodynamic performance. These low efficiencies indicate that there is significant room for improvement of air handler fans. The other 85-90% of the electricity used by air handlers is manifested as heat. This extra heat reduces air conditioning cooling and dehumidification performance and effectively acts as fuel switching for fossil fueled furnaces. For electric furnaces, this heat substitutes directly for the electric resistance heating elements. For heat pumps, this heat substitutes for compressor-based high COP heating and effectively reduces the COP of the heat pump. Using a combination of field observations and engineering judgment they can assemble a list of the problems that lead to low air handler efficiency and potential solutions to these problems, as shown. None of the problems require exotic or complex solutions and there are no technological barriers to adopting them. Some of the solutions are simple equipment swaps (using better electric motors), others require changes to the way the components are built (tighter tolerances) and other relate to HVAC equipment design (not putting large fans in small cabinets).

Walker, Iain S.

2005-03-01T23:59:59.000Z

263

City of Tallahassee Utilities - Efficiency Loans (Florida) |...  

Open Energy Info (EERE)

Doors, DuctAir sealing, Heat pumps, Heat recovery, Pool Pumps, Refrigerators, Roofs, Windows, Room Air Conditioners, Geothermal Heat Pumps, Water Source Heat Pump Active...

264

DOE Refers Four ENERGY STAR Models to EPA for Potential De-Listing...  

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

Avanti Products ("Avanti") refrigerator basic model BCA4560W-2 and three Friedrich Air Conditioning Company ("Friedrich") room air conditioner basic models (WS12C10,...

265

Muscatine Power and Water - Residential Energy Efficiency Rebates...  

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

clothes washers, dryers, ranges, room air and central air conditioners, ground source heat pumps, and water heaters are eligible for this program. The rebate amount...

266

BEETIT: Building Cooling and Air Conditioning  

Science Conference Proceedings (OSTI)

BEETIT Project: The 14 projects that comprise ARPA-Es 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.

None

2010-09-01T23:59:59.000Z

267

Residential Humidity Control: Exciting New Opportunities with Air Flow Modulation  

E-Print Network (OSTI)

This paper reviews psychrometric principles and shows how to formulate a psychrometric chart from a single equation. The chart is used to demonstrate the manner in which a conventional single-speed air conditioner adjusts its operating point in an attempt to control humidity over a range of conditions. The system performance with an electronically commutated motor (ECM) driving the blower is then presented. With ECM blower speed control, it is possible to raise the sensible capacity, reduce the sensible capacity, and boost the efficiency of an otherwise conventional air conditioner. This makes such systems ideal to respond to the changing loads in a hot and humid climate.

Crawford, J. G.

1987-01-01T23:59:59.000Z

268

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

SciTech Connect

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

None

2010-09-01T23:59:59.000Z

269

Technical support document: Energy efficiency standards for consumer products: Room air conditioners, water heaters, direct heating equipment, mobile home furnaces, kitchen ranges and ovens, pool heaters, fluorescent lamp ballasts and television sets. Volume 3, Water heaters, pool heaters, direct heating equipment, and mobile home furnaces  

SciTech Connect

This is Volume 3 in a series of documents on energy efficiency of consumer products. This volume discusses energy efficiency of water heaters. Water heaters are defined by NAECA as products that utilize oil, gas, or electricity to heat potable water for use outside the heater upon demand. These are major appliances, which use a large portion (18% on average) of total energy consumed per household (1). They differ from most other appliances in that they are usually installed in obscure locations as part of the plumbing and are ignored until they fail. Residential water heaters are capable of heating water up to 180{degrees}F, although the setpoints are usually set lower.

Not Available

1993-11-01T23:59:59.000Z

270

Matchstick: a room-to-room thermal model for predicting indoor temperature from wireless sensor data  

Science Conference Proceedings (OSTI)

In this paper we present a room-to-room thermal model used to accurately predict temperatures in residential buildings. We evaluate the accuracy of this model with ground truth data from four occupied family homes (two in the UK and two in the US). The ... Keywords: forced air, home automation, prediction, radiators, thermal modelling, underfloor heating

Carl Ellis; Mike Hazas; James Scott

2013-04-01T23:59:59.000Z

271

Air-Con Agrees to Pay Civil Penalty to Resolve Enforcement Action |  

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

Air-Con Agrees to Pay Civil Penalty to Resolve Enforcement Action Air-Con Agrees to Pay Civil Penalty to Resolve Enforcement Action Air-Con Agrees to Pay Civil Penalty to Resolve Enforcement Action November 23, 2010 - 6:34pm Addthis The Department of Energy has settled the civil penalty action it initiated against Air-Con International for Air-Con's sale of air conditioners in the United States that used more energy than allowed by federal law. On September 20, 2010, based on Air-Con's responses to a DOE subpoena, DOE ordered Air-Con to stop selling noncompliant air conditioners in the United States and proposed civil penalties for the noncompliant units sold by the company. Air-Con promptly ceased U.S. sales of the noncompliant models. In the settlement announced today, DOE agreed to accept a civil penalty of $10,000, after considering factors set forth in DOE's penalty guidance,

272

Air-Con Agrees to Pay Civil Penalty to Resolve Enforcement Action |  

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

Air-Con Agrees to Pay Civil Penalty to Resolve Enforcement Action Air-Con Agrees to Pay Civil Penalty to Resolve Enforcement Action Air-Con Agrees to Pay Civil Penalty to Resolve Enforcement Action November 23, 2010 - 6:34pm Addthis The Department of Energy has settled the civil penalty action it initiated against Air-Con International for Air-Con's sale of air conditioners in the United States that used more energy than allowed by federal law. On September 20, 2010, based on Air-Con's responses to a DOE subpoena, DOE ordered Air-Con to stop selling noncompliant air conditioners in the United States and proposed civil penalties for the noncompliant units sold by the company. Air-Con promptly ceased U.S. sales of the noncompliant models. In the settlement announced today, DOE agreed to accept a civil penalty of $10,000, after considering factors set forth in DOE's penalty guidance,

273

Demonstration and Testing of ClimaStat for Improved Rooftop Air-Conditioning Efficeincy  

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

Demonstration and Testing of ClimaStat® for Improved Rooftop Air-Conditioning Efficiency Presented at IA Technology Deployment Working Group Meeting March 15, 2012 By Dan Howett, PE Oak Ridge National Laboratory Demonstration/Testing of ClimaStat ® for Improved Efficiency of RTU Air Conditioners * Technology from Advantek Consulting - Patented by Dr. Michael West in 2003. (US Patent #6427454) - Originally demonstrated under DOE's Inventions & Innovations program. * Current demonstration sponsored by DOD's ESTCP program * Uses off-the-shelf components to either... - Modify existing packaged air conditioners, or - Incorporate changes into new RTU equipment before installation * Initial tests show 15% improvement in HVAC efficiency.

274

Demonstration and Testing of ClimaStat for Improved Rooftop Air-Conditioning Efficeincy  

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

Demonstration and Testing of ClimaStat® for Improved Rooftop Air-Conditioning Efficiency Presented at IA Technology Deployment Working Group Meeting March 15, 2012 By Dan Howett, PE Oak Ridge National Laboratory Demonstration/Testing of ClimaStat ® for Improved Efficiency of RTU Air Conditioners * Technology from Advantek Consulting - Patented by Dr. Michael West in 2003. (US Patent #6427454) - Originally demonstrated under DOE's Inventions & Innovations program. * Current demonstration sponsored by DOD's ESTCP program * Uses off-the-shelf components to either... - Modify existing packaged air conditioners, or - Incorporate changes into new RTU equipment before installation * Initial tests show 15% improvement in HVAC efficiency.

275

TEE-0062 - In the Matter of United CoolAir Corp. | Department of Energy  

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

TEE-0062 - In the Matter of United CoolAir Corp. TEE-0062 - In the Matter of United CoolAir Corp. TEE-0062 - In the Matter of United CoolAir Corp. This Decision and Order considers an Application for Exception filed by United CoolAir Corporation (United CoolAir) seeking exception relief from the provisions of 10 C.F.R. Part 431, Subpart F, Energy Conservation Program for Certain Commercial and Industrial Equipment: Commercial Air Conditioners and Heat Pumps Energy Conservation Standards (Commercial Air Conditioner Standards).1 In its Application, United CoolAir asserts that the firm would suffer serious hardship, inequity, or unfair distribution of burdens if required to comply with the 13 SEER energy efficiency standard effective January 1, 2010, 10 C.F.R. § 431.97(b). If United CoolAir's Application for Exception were granted, the firm would

276

TEE-0062 - In the Matter of United CoolAir Corp. | Department of Energy  

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

2 - In the Matter of United CoolAir Corp. 2 - In the Matter of United CoolAir Corp. TEE-0062 - In the Matter of United CoolAir Corp. This Decision and Order considers an Application for Exception filed by United CoolAir Corporation (United CoolAir) seeking exception relief from the provisions of 10 C.F.R. Part 431, Subpart F, Energy Conservation Program for Certain Commercial and Industrial Equipment: Commercial Air Conditioners and Heat Pumps Energy Conservation Standards (Commercial Air Conditioner Standards).1 In its Application, United CoolAir asserts that the firm would suffer serious hardship, inequity, or unfair distribution of burdens if required to comply with the 13 SEER energy efficiency standard effective January 1, 2010, 10 C.F.R. § 431.97(b). If United CoolAir's Application for Exception were granted, the firm would

277

SRO : single room occupancy  

E-Print Network (OSTI)

During August of 1996, I stayed in a series of SRO hotels in New York City leaving a book and diary behind when I checked out of each room. The books that were left in the rooms differ from one room to the other but all ...

Shimada, Taketo

1997-01-01T23:59:59.000Z

278

Alliant Energy Interstate Power and Light (Gas and Electric)...  

Open Energy Info (EERE)

Water Heaters, Windows, Whole House Fans, Room Air Conditioners, Geothermal Heat Pumps, LED Lighting, Heat Pump Water Heaters Active Incentive Yes Implementing Sector Utility...

279

CoServ Electric Cooperative - Residential Energy Efficiency Rebate...  

Open Energy Info (EERE)

Dishwasher, Heat pumps, Lighting, Water Heaters, Room Air Conditioners, HVAC Tune-Up, LED Lighting Active Incentive Yes Implementing Sector Utility Energy Category Energy...

280

Corn Belt Energy Coop - Commercial Energy Efficiency Rebate Program...  

Open Energy Info (EERE)

approval, Heat pumps, Lighting, Lighting ControlsSensors, Programmable Thermostats, LED Exit Signs, Room Air Conditioners, Geothermal Heat Pumps, LED Lighting Active Incentive...

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


281

Eau Claire Energy Cooperative - Residential Energy Efficiency...  

Open Energy Info (EERE)

Motor VFDs, Refrigerators, Water Heaters, Room Air Conditioners, Geothermal Heat Pumps, LED Lighting Active Incentive Yes Implementing Sector Utility Energy Category Energy...

282

Alliant Energy Interstate Power and Light (Electric) - Business...  

Open Energy Info (EERE)

Commercial Refrigeration Equipment, Food Service Equipment, Room Air Conditioners, LED Lighting, Tankless Water Heaters, Heat Pump Water Heaters Active Incentive Yes...

283

Efficient Living Energy Grant (Illinois) | Open Energy Information  

Open Energy Info (EERE)

Motor VFDs, Programmable Thermostats, Refrigerators, Water Heaters, Whole House Fans, LED Exit Signs, Vending Machine Controls, Room Air Conditioners, Geothermal Heat Pumps, LED...

284

Baltimore Gas & Electric Company (Electric) - Residential Energy...  

Open Energy Info (EERE)

Thermostats, Refrigerators, Water Heaters, Room Air Conditioners, Geothermal Heat Pumps, LED Lighting Active Incentive Yes Implementing Sector Utility Energy Category Energy...

285

Barron Electric Cooperative - Energy Star Appliance and Energy...  

Open Energy Info (EERE)

Lighting ControlsSensors, Refrigerators, Room Air Conditioners, Geothermal Heat Pumps, LED Lighting Active Incentive Yes Implementing Sector Utility Energy Category Energy...

286

Anaheim Public Utilities - Residential Home Efficiency Rebate...  

Open Energy Info (EERE)

Insulation, Lighting, Lighting ControlsSensors, Motors, Pool Pumps, Refrigerators, Windows, Room Air Conditioners, Water Saving Devices, LED Lighting Active Incentive Yes...

287

Standby power use: How big is the problem? What policies and technical solutions can address it?  

E-Print Network (OSTI)

as clothes washers, dishwashers, and room air conditioners.clothes washers, dishwashers, microwaves, ceiling fans withthe end of 2003. The dishwasher test procedure has already

2002-01-01T23:59:59.000Z

288

2006 Status Report Savings Estimates for the ENERGY STAR(R) Voluntary Labeling Program  

E-Print Network (OSTI)

Telephony.. 2002 Dishwashers 1996 a Hotfor clothes washers and dishwashers are derived from PG&Eclothes washers, dishwashers, room air conditioners (RACs),

Webber, Carrie A.; Brown, Richard E.; Sanchez, Marla; Homan, Gregory K.

2006-01-01T23:59:59.000Z

289

Alliant Energy Interstate Power and Light (Gas and Electric)...  

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

Rebate Amount Energy Audit: Free Clothes Washer: 100 Refrigerator Replacement: 50 Dishwasher Replacement: 20 Freezer: 25 Room Air Conditioner: 25 Water Heater: 50 Electric...

290

Realized and prospective impacts of U.S. energy efficiency standards for residential appliances: 2004 update  

E-Print Network (OSTI)

Clothes Washers Clothes Dryers Dishwashers Water Heaters Gas2030 Figure 2.7 New Dishwashers Annual Shipments, 1980- Clothes Washers Dishwashers Room Air Conditioners (The

Meyers, Stephen; McMahon, James; McNeil, Michael

2005-01-01T23:59:59.000Z

291

Realized and Projected Impacts of U.S. Energy Efficiency Standards for Residential and Commercial Appliances  

E-Print Network (OSTI)

Washers Clothes Dryers Dishwashers COMMERCIAL Fluorescentfor clothes washers and dishwashers. d The sections belowclothes washers, dishwashers and room air conditioners. The

Meyers, Stephen P.

2008-01-01T23:59:59.000Z

292

Impact of the Energy Efficiency Labeling and Standards Program...  

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

of the Energy Efficiency Labeling and Standards Program on Room Air-conditioner in Korea NOTICE Due to the current lapse of federal funding, Berkeley Lab websites are...

293

Retrospective Evaluation of Appliance Price Trends  

E-Print Network (OSTI)

the higher the product cost and retail price. Table 3.change and appliance price Room air conditioners Small (price data to clarify price

Dale, Larry

2010-01-01T23:59:59.000Z

294

EA-0819: Finding of No Significant Impact | Department of Energy  

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

19: Finding of No Significant Impact EA-0819: Finding of No Significant Impact Energy Conservation Standards for Eight Types of Consumer Products: Room Air Conditioners, Water...

295

Flow conditioner for fuel injector for combustor and method for low-NO.sub.x combustor  

Science Conference Proceedings (OSTI)

An injector for a gas turbine combustor including a catalyst coated surface forming a passage for feed gas flow and a channel for oxidant gas flow establishing an axial gas flow through a flow conditioner disposed at least partially within an inner wall of the injector. The flow conditioner includes a length with an interior passage opening into upstream and downstream ends for passage of the axial gas flow. An interior diameter of the interior passage smoothly reduces and then increases from upstream to downstream ends.

Dutta, Partha; Smith, Kenneth O.; Ritz, Frank J.

2013-09-10T23:59:59.000Z

296

Procuring Energy-Efficient Products (Fact Sheet) (Revised), Federal Energy Management Program (FEMP)  

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

Space Heating Space Heating and Cooling * Boilers p * Central Air Conditioners n * Chillers - Air-Cooled Electric p - Water-Cooled Electric p * Air Source Heat Pumps n Commercial Water Heating * Gas Water Heaters p Residential Space Heating and Cooling * Room Air Conditioners n * Central Air Conditioners n * Boilers n * Fans - Ceiling n - Ventilation n * Gas Furnaces n * Heat Pumps - Air Source n - Ground-Source n Residential Water Heating * Electric Resistance Storage p * Heat Pump n

297

Procuring Energy-Efficient Products (Fact Sheet) (Revised), Federal Energy Management Program (FEMP)  

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

Space Heating Space Heating and Cooling * Boilers p * Central Air Conditioners n * Chillers - Air-Cooled Electric p - Water-Cooled Electric p * Air Source Heat Pumps n Commercial Water Heating * Gas Water Heaters p Residential Space Heating and Cooling * Room Air Conditioners n * Central Air Conditioners n * Boilers n * Fans - Ceiling n - Ventilation n * Gas Furnaces n * Heat Pumps - Air Source n - Ground-Source n Residential Water Heating * Electric Resistance Storage p * Heat Pump n

298

Sorption of organic gases in residential rooms  

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

residential rooms residential rooms Title Sorption of organic gases in residential rooms Publication Type Journal Article LBNL Report Number LBNL-59303 Year of Publication 2007 Authors Singer, Brett C., Alfred T. Hodgson, Toshifumi Hotchi, Katherine Y. Ming, Richard G. Sextro, Emily E. Wood, and Nancy J. Brown Journal Atmospheric Environment Volume 41 Start Page Chapter Pagination 3251-3265 Keywords adsorption, hazardous air pollutants, nerve agents, sink effect, volatile organic compounds Abstract Experiments were conducted to characterize organic gas sorption in residential rooms studied ''as-is'' with furnishings and material surfaces unaltered and in a furnished chamber designed to simulate a residential room. Results are presented for 10 rooms (five bedrooms, two bathrooms, a home office, and two multi-function spaces) and the chamber. Exposed materials were characterized and areas quantified. A mixture of volatile organic compounds (VOCs) was rapidly volatilized within each room as it was closed and sealed for a 5-h Adsorb phase; this was followed by 30-min Flush and 2-h closed-room Desorb phases. Included were alkane, aromatic, and oxygenated VOCs representing a range of ambient and indoor air pollutants. Three organophosphorus compounds served as surrogates for Sarin-like nerve agents. Measured gas-phase concentrations were fit to three variations of a mathematical model that considers sorption occurring at a surface sink and potentially a second, embedded sink. The 3-parameter sink-diffusion model provided acceptable fits for most compounds and the 4-parameter two-sink model provided acceptable fits for the others. Initial adsorption rates and sorptive partitioning increased with decreasing vapor pressure for the alkanes, aromatics and oxygenated VOCs. Best-fit sorption parameters obtained from experimental data from the chamber produced best-fit sorption parameters similar to those obtained from the residential rooms

299

Laboratory Testing of the Heating Capacity of Air-Source Heat Pumps at Low Outdoor Temperature Conditions  

Science Conference Proceedings (OSTI)

Air-source heat pump systems offer an alternative to the common heating, ventilating, and air conditioning (HVAC) configuration of single split unitary air conditioners with gas heating. In simple terms, heat pumps are traditional air conditioning units with the added capability of running in reverse as required by the building load. Thus, where the traditional air conditioning unit has an indoor evaporator to remove heat from the space and an outdoor condenser to reject heat to the ambient environment, ...

2010-12-22T23:59:59.000Z

300

Public Reading Room  

Office of Legacy Management (LM)

has established a Public Reading Room at 955 has established a Public Reading Room at 955 Mound Road, Miamisburg, Ohio, which contains documents and information related to Mound as required under Section 117(d) of SARA. Copies of key Mound records, including the CERCLA Administrative Record and Information Repository, are kept in the Public Reading Room. The Administrative Record and Information Repository for Mound are updated as new documents are created and an index of documents in the complete collections accompanies each update. The Public Reading Room also contains reference items consisting of technical documents, news clippings, videotapes, journal articles, annual reports, and environmental restoration and decontamination and decommissioning decisional documents. Stakeholders are

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


301

A review of polymer-based water conditioners for reduction of handling-related injury  

Science Conference Proceedings (OSTI)

Fish are coated with an external layer of protective mucus. This layer serves as the primary barrier against infection or injury, reduces friction, and plays a role in ionic and osmotic regulation. However, the mucus layer is easily disturbed when fish are netted, handled, transported, stressed, or subjected to adverse water conditions. Water additives containing polyvinylpyrrolidone (PVP) or proprietary polymers have been used to prevent the deleterious effects of mucus layer disturbances in the commercial tropical fish industry, aquaculture, and for other fisheries management purposes. This paper reviews research on the effectiveness of water conditioners, and examines the contents and uses of a wide variety of commercially available water conditioners. Water conditioners containing polymers may reduce external damage to fish held in containers during scientific experimentation, including surgical implantation of electronic tags. However, there is a need to empirically test the effectiveness of water conditioners at preventing damage to and promoting healing of the mucus layer. A research agenda is provided to advance the science related to the use of water conditions to improve the condition of fish during handling and tagging.

Harnish, Ryan A.; Colotelo, Alison HA; Brown, Richard S.

2011-01-01T23:59:59.000Z

302

Demolishing Searle's Chinese Room  

E-Print Network (OSTI)

Searle's Chinese Room argument is refuted by showing that he has actually given two different versions of the room, which fail for different reasons. Hence, Searle does not achieve his stated goal of showing ``that a system could have input and output capabilities that duplicated those of a native Chinese speaker and still not understand Chinese''.

Wolfram Schmied

2004-03-08T23:59:59.000Z

303

Appliances and Commercial Equipment Standards  

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

Computer Room Air Conditioners Computer Room Air Conditioners Sign up for e-mail updates on regulations for this and other products The Department of Energy (DOE) has regulated the energy efficiency level of computer room air conditioners (CRACs) since 2012. A CRAC is a device that monitors and maintains the temperature, air distribution, and humidity in a network room or data center and is rated as a computer room air conditioner in accordance with 10 CFR 431.96. Recent Updates | Standards | Test Procedures | Waiver, Exception, and Exemption Information | Statutory Authority | Historical Information | Contact Information Recent Updates There are no recent updates for this product. Standards for Computer Room Air Conditioners The following content summarizes the energy conservation standards for CRACs. The text is not an official reproduction of the Code of Federal Regulations and should not be used for legal research or citation.

304

Appliances and Commercial Equipment Standards  

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

Room Air Conditioners Room Air Conditioners Sign up for e-mail updates on regulations for this and other products The Department of Energy (DOE) has regulated the energy efficiency level of residential room air conditioners since 1987. Residential room air conditioners are mounted in windows or through walls and deliver conditioned air to enclosed spaces. Room air conditioners typically extract heat from the room and vent it outdoors. These products are offered in a broad range of sizes and configurations. They are used in homes, apartments, and commercial settings. The standard implemented in 1990 will save approximately 0.7 quads of energy and result in approximately $8 billion in energy bill savings for products shipped from 1990-2019. The standard will avoid about 41.4 million metric tons of carbon dioxide emissions, equivalent to the annual greenhouse gas emissions of about 8.1 million automobiles.

305

Driving Demand for Home Energy Improvements: Motivating residential customers to invest in comprehensive upgrades that eliminate energy waste, avoid high utility bills, and spur the economy  

E-Print Network (OSTI)

water heater replacement, air conditioner replacement, solarwater heater replacement, air conditioner replacement, solar

Fuller, Merrian C.

2011-01-01T23:59:59.000Z

306

Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement  

E-Print Network (OSTI)

In other words, we had the answer key and could grade whichwere simulated, the answer key was available and we could

Bode, Josh

2013-01-01T23:59:59.000Z

307

Variable Refrigerant Flow Air Conditioners and Heat Pumps for Commercial Buildings  

Science Conference Proceedings (OSTI)

Multi-split heat pumps have evolved from a technology suitable for residential and light commercial buildings to variable refrigerant flow (VRF) systems that can provide efficient space conditioning for large commercial buildings. VRF systems are enhanced versions of ductless multi-split systems, permitting more indoor units to be connected to each outdoor unit and providing additional features such as simultaneous heating and cooling and heat recovery. VRF systems are very popular in Asia and Europe and...

2008-01-25T23:59:59.000Z

308

Life-cycle cost and payback period analysis for commercial unitary air conditioners  

E-Print Network (OSTI)

18 2.3.1 Electricity Price19 2.3.2 Electricity PriceELECTRICITY PRICES . . . . . . . . . . . . . . . . . . . 37

Rosenquist, Greg; Coughlin, Katie; Dale, Larry; McMahon, James; Meyers, Steve

2004-01-01T23:59:59.000Z

309

Life-cycle cost and payback period analysis for commercial unitary air conditioners  

E-Print Network (OSTI)

37 RESULTS USING TARIFF-BASED ELECTRICITYHourly-based Electricity Price Models Tariff-based HourlyRESULTS USING TARIFF-BASED ELECTRICITY PRICES LCC Results

Rosenquist, Greg; Coughlin, Katie; Dale, Larry; McMahon, James; Meyers, Steve

2004-01-01T23:59:59.000Z

310

Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement  

E-Print Network (OSTI)

2004. Working Group 2 Demand Response Program Evaluation A. Barat, D. Watson. 2007. Demand Response Spinning Reserveand E. Parker (2009). Demand Response Spinning Reserve

Bode, Josh

2013-01-01T23:59:59.000Z

311

Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement  

E-Print Network (OSTI)

and Industrial Facilities to Dynamic Electricity Prices.and Industrial Facilities to Dynamic Electricity Prices.

Bode, Josh

2013-01-01T23:59:59.000Z

312

Life-cycle cost and payback period analysis for commercial unitary air conditioners  

E-Print Network (OSTI)

2030. Estimating future electricity rates is very difficult,payback, the required electricity rate is only for the yearcase, the year 2008. The electricity rate used in the PBP

Rosenquist, Greg; Coughlin, Katie; Dale, Larry; McMahon, James; Meyers, Steve

2004-01-01T23:59:59.000Z

313

Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement  

E-Print Network (OSTI)

017F.PDF KEMA, Inc. 2011. PJM Empirical Analysis of DemandMethods. Prepared for the PJM Markets Implementation~/media/markets-ops/dsr/pjm-analysis-of-dr-baseline-methods-

Bode, Josh

2013-01-01T23:59:59.000Z

314

Life-cycle cost and payback period analysis for commercial unitary air conditioners  

E-Print Network (OSTI)

Energy Regulatory Commission (FERC) Form 1 filings. http://Energy Regulatory Commission (FERC) website through Form 714annual data submitted to FERC from regulated utilities and

Rosenquist, Greg; Coughlin, Katie; Dale, Larry; McMahon, James; Meyers, Steve

2004-01-01T23:59:59.000Z

315

Ground Source Heat Pump Air Conditioner Monitoring Control System Design Based on CAN Bus  

Science Conference Proceedings (OSTI)

Based on CAN bus technology, chooses ST's ARM Cortex-M3 core, new generation STM32 embedded enhanced processor STM32F103 as main control chip, designs the overall structure of system, CAN functional block diagram, CAN communication software and so on. ... Keywords: CAN bus embedded STM32F103

Tong Gang; Li Ping

2010-06-01T23:59:59.000Z

316

Life-cycle cost and payback period analysis for commercial unitary air conditioners  

E-Print Network (OSTI)

energy expenses based upon electricity prices that customers may pay if electricity markets become deregulated. Electricity price trends:

Rosenquist, Greg; Coughlin, Katie; Dale, Larry; McMahon, James; Meyers, Steve

2004-01-01T23:59:59.000Z

317

Demonstration of Intelligent Control and Fan Improvements in Computer Room  

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

Demonstration of Intelligent Control and Fan Improvements in Computer Room Demonstration of Intelligent Control and Fan Improvements in Computer Room Air Handlers Title Demonstration of Intelligent Control and Fan Improvements in Computer Room Air Handlers Publication Type Report Refereed Designation Unknown LBNL Report Number LBNL-6007E Year of Publication 2012 Authors Coles, Henry C., Steve E. Greenberg, and Corrine Vita Document Number LBNL-6007E Date Published 12/2012 Publisher Lawrence Berkeley National Laboratory City Berkeley, CA Keywords air distribution, building technology and urban systems department, computer room air handler, crah control, data center, data center crah, ec fan, ecm, ecm fan, fan speed control, high tech and industrial systems group, plug fan, variable frequency drive, vfd, wireless control Abstract

318

SRNL - News Room  

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

& Development Projects in the "Press Room" at www.doe.gov for further details.) Expected funding for the SRNL project is estimated at approximately one-half million dollars a year...

319

Lab Breakthrough: Desiccant Enhanced Evaporative Air Conditioning |  

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

Desiccant Enhanced Evaporative Air Conditioning Desiccant Enhanced Evaporative Air Conditioning Lab Breakthrough: Desiccant Enhanced Evaporative Air Conditioning May 29, 2012 - 5:22pm Addthis This breakthrough combines desiccant materials, which remove moisture from the air using heat, and advanced evaporative technologies to develop a cooling unit that uses 90 percent less electricity and up to 80 percent less total energy than traditional air conditioning. This solution, called the desiccant enhanced evaporative air conditioner (DEVAP), also controls humidity more effectively to improve the comfort of people in buildings. View the entire Lab Breakthrough playlist. What are the key facts? Recent materials advances and liquid desiccant advances to design the compact and cost-effective DEVAP system. DEVAP uses 90 percent less electricity and up to 80 percent less

320

Lab Breakthrough: Desiccant Enhanced Evaporative Air Conditioning |  

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

Lab Breakthrough: Desiccant Enhanced Evaporative Air Conditioning Lab Breakthrough: Desiccant Enhanced Evaporative Air Conditioning Lab Breakthrough: Desiccant Enhanced Evaporative Air Conditioning May 29, 2012 - 5:22pm Addthis This breakthrough combines desiccant materials, which remove moisture from the air using heat, and advanced evaporative technologies to develop a cooling unit that uses 90 percent less electricity and up to 80 percent less total energy than traditional air conditioning. This solution, called the desiccant enhanced evaporative air conditioner (DEVAP), also controls humidity more effectively to improve the comfort of people in buildings. View the entire Lab Breakthrough playlist. What are the key facts? Recent materials advances and liquid desiccant advances to design the compact and cost-effective DEVAP system.

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


321

DOE Solar Decathlon: Press Room  

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

Bios Press Releases Photos Videos Education Sponsors Volunteers History FAQs Contacts Solar Decathlon Press Room The U.S. Department of Energy Solar Decathlon press room provides...

322

A smart GUI based air-conditioning and lighting controller for energy saving in building  

Science Conference Proceedings (OSTI)

This paper will concentrate on the algorithm and control strategies where the air-conditioners and lighting system can be controlled using microcontroller; a microcontroller is chosen due to its low cost and high flexibility. Conceptually, the controller ... Keywords: energy saving control system, graphic LCD, graphical user interface (GUI), microcontroller

M. F. Abas; N. MD. Saad; N. L. Ramli

2009-12-01T23:59:59.000Z

323

Technology Assessment and Application Guide for an Active Voltage Conditioner with Storage Option (AVC-Store)  

Science Conference Proceedings (OSTI)

This report describes and documents the construction, performance, and application of an active voltage conditioner (AVC) with energy storage. The system8211called the AVC-Store8211is manufactured by Vectek in Napier, New Zealand. Composed of a novel power electronics module, the system is organized to mitigate voltage sags, phase shift, and outages. This report describes the various subsystems within the AVC-Store, its operation, results of characterization tests, and issues related to its application a...

2006-06-27T23:59:59.000Z

324

Candidate chemical systems for air cooled solar powered, absorption air conditioner design. Part I. Organic absorbent systems  

DOE Green Energy (OSTI)

All the available experimental evidence suggests that the optimum ''organic'' absorbent/refrigerant combination would be a methane derivative with a single hydrogen atom with chlorine and fluorine atoms in the other sites, as refrigerant. This would be hydrogen bonded to an absorbent molecule containing the group =NC/sup -/O, with the substituent groups being such that no steric hindrance took place. Cycle analyses showed that the ratio of internal heat transfer to cooling would be large, probably impractically so in view of the high coefficient of performance needed for solar driven cooling and the additional handicap of heat rejection to the atmosphere. A more promising approach would be to reduce the internal heat transfer per unit of space cooling by selecting a refrigerant with a high latent heat of vaporization and selecting an absorbent with suitable properties.

Biermann, W.J.

325

Candidate chemical systems for air cooled, solar powered, absorption air conditioner design. Part II. Solid absorbents, high latent heat refrigerants  

DOE Green Energy (OSTI)

Work done in attempting to qualify absorption refrigeration systems based on refrigerants with intermediate latent heats of vaporization is summarized. In practice, these comprise methanol, ammonia, and methylamine. A wide variety of organic substances, salts, and mixtures were evaluated in as systematic a manner as possible. Several systems of interest are described. The system, LiClO/sub 3/--LiBr--H/sub 2/O, is a good back up system to our first choice of an antifreeze additive system, and thermodynamically promising but subject to some inconvenient materials limitations. The system, LiBr/ZnBr/sub 2/--methanol, is thermodynamically promising but requires additional kinetic qualification. Chemical stability of the system, LiCNS--ammonia/methylamine with various other third components, does not appear to be adequate for a long-lived system.

Biermann, W. J.

1978-04-01T23:59:59.000Z

326

Reducing air conditioning waste by signalling it is cool outside  

SciTech Connect

This experiment looked at the effects on residential energy consumption of providing homeowners with (1) a signalling device that indicated a conservation opportunity and (2) information feedback about their rate of energy use. The signalling device operated when the outside temperature was below 68F and the air conditioner was on. Homeowners were told that the signalling device indicated when they could cool their house effectively by opening the windows and turning off their air conditioner. Forty households were randomly assigned to one of four conditions: signalling device only, feedback only, both, neither. The results showed a significant 15.7% decrease in energy use for those households with the signalling devices. Neither the feedback nor interaction effect was significant. The advantages and disadvantages of having people in the control cycle were discussed. 4 references, 1 table.

Becker, L.J.; Seligman, C.

1978-07-01T23:59:59.000Z

327

Electronic Reading Room  

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

Electronic Reading Room - making information about the Freedom of Information Act (FOIA) and Privacy Act process accessible to the public electronically. Electronic Reading Room - making information about the Freedom of Information Act (FOIA) and Privacy Act process accessible to the public electronically. Major Information Systems - Final Opinions - [5 USC 552 (a)(2)](A) final opinions, including concurring and dissenting opinions, as well as orders, made in the adjudication of cases within the Office of Hearings and Appeals Statements of Policy and Interpretation and Administrative Staff Manuals and Instructions - [5 USC 552 (a)(2)](B) those statements of policy and interpretation which have been adopted by the agency and are not published in the Federal Register - Directives, DOE Orders, Headquarters Orders, Secretarial Notices, Technical Standards, Forms, Delegations, Electronic Library Public Reading Facilities - making information available for public inspection and copying

328

Reading Room Locations  

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

FOIA Offices and Reading Rooms FOIA Offices and Reading Rooms FOIA Office Locations Our FOIA Officers are located at various sites throughout the DOE complex, each with responsibility for records located at or under the jurisdiction of the site. We recommend that you send your request directly to that specific site. This will shorten the processing time. However, if you do not know which location has responsive records, you may either call the Headquarters FOIA office at (202) 586-5955 to determine the appropriate office, or mail the request to the Headquarters FOIA office. Other records are publicly available in the facilities listed below: Headquarters U.S. Department of Energy FOIA/Privacy Act Group 1000 Independence Avenue, SW Washington, D.C. 20585 Phone: 202-586-5955 Fax: 202-586-0575

329

Seasonal Energy Efficiency Ratio (SEER) Investigation for Residential and Small Commercial Air-Source Heat Pumps  

Science Conference Proceedings (OSTI)

Electric utilities frequently use the seasonal energy efficiency ratio (SEER) in air conditioningbased incentive programs to categorize energy efficiency and to quantify financial value. For residential and small commercial unitary air conditioners and heat pumps, SEER is determined by the procedures outlined in ANSI/AHRI Standard 210/240. Within Standard 210/240, SEER is calculated based on laboratory test results and equations that follow specific assumptions regarding indoor temperature, ...

2012-12-21T23:59:59.000Z

330

Analysis of historical residential air-conditioning equipment sizing using monitored data  

SciTech Connect

Monitored data were analyzed to determine whether residential air conditioners in the Pacific Northwest historically have been sized properly to meet or slightly exceed actual cooling requirements. Oversizing air-conditioning equipment results in a loss of efficiency because of increased cycling and also lowers humidity control. On the other hand, the penalty of undersizing air-conditioning equipment may be some loss of comfort during extremely hot weather. The monitored data consist of hourly space-conditioning electrical energy use and internal air temperature data collected during the past 7 years from 75 residences in the Pacific Northwest. These residences are equipped with central air conditioners or heat pumps. The periods with the highest cooling energy use were analyzed for each site. A standard industry sizing methodology was used for each site to determine a sizing estimate. Both the sizing recommendation based on Manual J and peak monitored loads are compared to the capacity of the installed equipment for each site to study how the actual capacity differed from both the estimate of proper sizing and from actual demands. Characteristics of the maximum cooling loads are analyzed here to determine which conditions put the highest demand on the air conditioner. Specifically, internal air temperature data are used to determine when the highest cooling loads occur, at constant thermostat settings or when the thermostat was set down. This analysis of monitored data also provides insight into the extent that occupant comfort may be affected by undersizing air conditioners. The findings of this research indicate that cooling equipment historically has often but not always been oversized beyond industry-recommended levels. However, some occupants in homes with undersized, properly sized, and, in rare occasions, even oversized cooling equipment appear to suffer because the cooling equipment cannot always provide adequate cooling. Key findings are summarized.

Lucas, R.G.

1993-02-01T23:59:59.000Z

331

A Field Study on Residential Air Conditioning Peak Loads During Summer in College Station, Texas  

E-Print Network (OSTI)

Severe capacity problems are experienced by electric utilities during hot summer afternoons. Several studies have found that, in large part, electric peak loads can be attributed to residential airconditioning use. This air-conditioning peak depends primarily on two factors: (i) the manner in which the homeowner operates his air-conditioner during the hot summer afternoons, and (ii) the amount by which the air-conditioner has been over-designed. Whole-house and air-conditioner electricity use data at 15 minute time intervals have been gathered and analyzed for 8 residences during the summer of 1991, six of which had passed the College Station Good Cents tests. Indoor air temperatures were measured by a mechanical chart recorder, while a weather station located on the main campus of Texas A&M university provided the necessary climatic data, especially ambient temperature, relative humidity and solar radiation. The data were analysed to determine the extent to which air-conditioning over-sizing and homeowner intervention contributes to peak electricity use for newer houses in College Station, Texas.

Reddy, T. A.; Vaidya, S.; Griffith, L.; Bhattacharyya, S.; Claridge, D. E.

1992-01-01T23:59:59.000Z

332

Tertiary Containment in a Multi-Room Tritium Facility  

SciTech Connect

An experimental system to provide tertiary containment at Mound has been upgraded to support a new multi-room tritium handling facility. This system is used to remove tritium from room air in the event of primary (process) and secondary (glovebox) containment failure. The upgraded system includes a faster response time, piping and valves that are more leaktight, and a new control panel that better indicates the system status and operating conditions.

Kent, L. R.

1985-04-01T23:59:59.000Z

333

Addressing Water Consumption of Evaporative Coolers with Greywater  

E-Print Network (OSTI)

efficiency compared to vapor compression air conditioners,with conventional vapor compression air conditioners.that the efficiency of vapor compression air conditioners

Sahai, Rashmi

2013-01-01T23:59:59.000Z

334

Media Room | National Nuclear Security Administration  

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

Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog The National Nuclear Security Administration Media Room Home > Media Room Media Room NNSA's Office of...

335

Engineering study - alternatives for SHMS high temperature/moisture gas sample conditioners for the aging waste facility  

SciTech Connect

The Standard Hydrogen Monitoring Systems have been experiencing high temperature/moisture problems with gas samples from the Aging Waste Tanks. These moist hot gas samples have stopped the operation of the SHMS units on tanks AZ-101, AZ-102, and AY-102. This study looks at alternatives for gas sample conditioners for the Aging Waste Facility.

THOMPSON, J.F.

1999-06-02T23:59:59.000Z

336

Improving air handler efficiency in houses  

SciTech Connect

Although furnaces, air conditioners and heat pumps have become significantly more efficient over the last couple of decades, residential air handlers have typical efficiencies of only 10% to 15% due to poor electric motor performance and aerodynamically poor fans and fan housings. Substantial increases in performance could be obtained through improved air handler design and construction. A prototype residential air handler intended to address these issues has recently been developed. The prototype and a standard production fan were tested in a full-scale duct system and test chamber at LBNL specifically designed for testing heating, ventilation, and air conditioning systems. The laboratory tests compared efficiency, total airflow, sensitivity to duct system flow resistance, and the effects of installation in a smaller cabinet. The test results showed that the prototype air handler had about twice the efficiency of the standard air handler (averaged over a wide range of operating conditions) and was less sensitive to duct system flow resistance changes. The performance of both air handlers was significantly reduced by reducing the clearance between the air handler and cabinet it was placed in. These test results showed that in addition to the large scope for performance improvement, air handler fans need to be tested in the cabinets they operate in.

Walker, Iain S.

2004-05-01T23:59:59.000Z

337

Air-Con International: Noncompliance Determination and Proposed Penalty  

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

Con International: Noncompliance Determination and Proposed Con International: Noncompliance Determination and Proposed Penalty (2010-SE-0301) Air-Con International: Noncompliance Determination and Proposed Penalty (2010-SE-0301) September 20, 2010 DOE issued a 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 private label do not comport with the energy conservation standards. DOE also alleged in a Notice of Proposed Civil Penalty that Air-Con imported and distributed the noncompliant products in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This

338

List of Duct/Air sealing Incentives | Open Energy Information  

Open Energy Info (EERE)

Duct/Air sealing Incentives Duct/Air sealing Incentives Jump to: navigation, search The following contains the list of 580 Duct/Air sealing Incentives. CSV (rows 1-500) CSV (rows 501-580) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active AEP (Central and North) - Residential Energy Efficiency Programs (Texas) Utility Rebate Program Texas Construction Installer/Contractor Multi-Family Residential Building Insulation Caulking/Weather-stripping Comprehensive Measures/Whole Building Custom/Others pending approval Duct/Air sealing Unspecified technologies Yes AEP (Central and SWEPCO) - Coolsaver A/C Tune Up (Texas) Utility Rebate Program Texas Commercial Installer/Contractor Residential Central Air conditioners Custom/Others pending approval Duct/Air sealing

339

Innovative Evaporative and Thermally Activated Technologies Improve Air Conditioning, The Spectrum of Clean Energy Innovation (Fact Sheet)  

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

Innovative Evaporative and Innovative Evaporative and Thermally Activated Technologies Improve Air Conditioning Researchers at the National Renewable Energy Laboratory (NREL) invented a breakthrough technology that improves air conditioning in a novel way-with heat. NREL combined desiccant materials, which remove moisture from the air using heat, and advanced evaporative technologies to develop a cooling unit that uses 90% less electricity and up to 80% less total energy than traditional air conditioning (AC). This solution, called the desiccant enhanced evaporative air conditioner (DEVap), also controls humidity more effectively to improve the comfort of people in buildings. Desiccants are an example of a thermally activated technology (TAT) that relies on heat instead

340

Extinction Studies of Hydrofluorocarons in Methane/Air and ...  

Science Conference Proceedings (OSTI)

... is a major fire threat in shipboard flammable liquid storage rooms (FLSRs). ... agent volume concentration in air for methane and propane fuels ...

2011-10-13T23:59:59.000Z

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


341

Hypercomputation in the Chinese Room  

Science Conference Proceedings (OSTI)

I rehearse a number of objections to John Searle's famous Chinese room argument. One is the 'hypercomputational objection' (Copeland 2002a). Hypercomputation is the computation of functions that cannot be computed in the sense of Turing (1936); the term ...

B. Jack Copeland

2002-10-01T23:59:59.000Z

342

Nuclear reactor control room construction  

DOE Patents (OSTI)

A control room for a nuclear plant is disclosed. In the control room, objects labelled 12, 20, 22, 26, 30 in the drawing are no less than four inches from walls labelled 10.2. A ceiling contains cooling fins that extend downwards toward the floor from metal plates. A concrete slab is poured over the plates. Studs are welded to the plates and are encased in the concrete. 6 figures.

Lamuro, R.C.; Orr, R.

1993-11-16T23:59:59.000Z

343

PERFORMANCE OF AN EXPERIMENTAL SOLAR-DRIVEN ABSORPTION AIR CONDITIONER--ANNUAL REPORT JULY 1975-SEPT. 1976  

E-Print Network (OSTI)

of the waste heat. The solar heating and cooling program ofheating. The heat source can be either a back-up system, or the solar

Dao, K.

2010-01-01T23:59:59.000Z

344

Progress towards Managing Residential Electricity Demand: Impacts of Standards and Labeling for Refrigerators and Air Conditioners in India  

E-Print Network (OSTI)

Estimation - Indian Standards and Labeling Program. USEPA,and Energy Efficiency Standards in India. Indian Bureau ofof Energy-Efficiency Standards for Indian Refrigerators.

McNeil, Michael A.

2010-01-01T23:59:59.000Z

345

PERFORMANCE OF AN EXPERIMENTAL SOLAR-DRIVEN ABSORPTION AIR CONDITIONER--ANNUAL REPORT JULY 1975-SEPT. 1976  

E-Print Network (OSTI)

cooled, ammonia-water absorption chiller as a starting pointabsorption cycle under such conJitions. A nominal three-ton,continuous operation, heat-actuated water chiller

Dao, K.

2010-01-01T23:59:59.000Z

346

Progress towards Managing Residential Electricity Demand: Impacts of Standards and Labeling for Refrigerators and Air Conditioners in India  

E-Print Network (OSTI)

prevailing marginal electricity prices, in order to give anCCE with prevailing electricity prices. In order to estimateusers. Marginal Electricity Prices and Discount Rates

McNeil, Michael A.

2010-01-01T23:59:59.000Z

347

Progress towards Managing Residential Electricity Demand: Impacts of Standards and Labeling for Refrigerators and Air Conditioners in India  

E-Print Network (OSTI)

program as scheduled. By 2030, this program, if fullyTWh. Overall savings through 2030 totals 385 TWh. Finally,savings achievable by 2030. Introduction The Indian Bureau

McNeil, Michael A.

2010-01-01T23:59:59.000Z

348

Progress towards Managing Residential Electricity Demand: Impacts of Standards and Labeling for Refrigerators and Air Conditioners in India  

E-Print Network (OSTI)

in use patterns and electricity rates between commercial andRates Residential electricity rates are much lower thanin India. Residential electricity rates are subsidized to a

McNeil, Michael A.

2010-01-01T23:59:59.000Z

349

Progress towards Managing Residential Electricity Demand: Impacts of Standards and Labeling for Refrigerators and Air Conditioners in India  

E-Print Network (OSTI)

Discount Rates Residential electricity rates are much lowerrates in India. Residential electricity rates are subsidizedand electricity rates between commercial and residential

McNeil, Michael A.

2010-01-01T23:59:59.000Z

350

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

E-Print Network (OSTI)

2009). ASHRAE Handbook - Fundamentals. ASHRAE, 1791 Tulliethe 2009 ANSI/ASHRAE HandbookFundamentals Equation 38 [9],

Yu, Bingyi

2013-01-01T23:59:59.000Z

351

Progress towards Managing Residential Electricity Demand: Impacts of Standards and Labeling for Refrigerators and Air Conditioners in India  

E-Print Network (OSTI)

2000-2050 National Energy Consumption When regulations takeThe total energy consumption (NEC) of the national stock ofenergy consumption and associated emissions of greenhouse gases and other pollutants at the national

McNeil, Michael A.

2010-01-01T23:59:59.000Z

352

PERFORMANCE OF AN EXPERIMENTAL SOLAR-DRIVEN ABSORPTION AIR CONDITIONER--ANNUAL REPORT JULY 1975-SEPT. 1976  

E-Print Network (OSTI)

and Thermodynamic Properties of Ammonia-Water Mixtures",thermodynamic properties of the ammonia-water solution wereof saturated properties of the ammonia-water. This slope can

Dao, K.

2010-01-01T23:59:59.000Z

353

DOE Institutes Enforcement Action Against AeroSys, Inc. for Failure to Certify Air Conditioners and Heat Pumps  

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

Washington, DC - The Department of Energys Office of General Counsel has issued a Notice of Proposed Civil Penalty to AeroSys, Inc. for failing to file certification reports or filing data that...

354

Study on Energy Saving of the Interlayer Ventilation Walla Used in Clean Operation Rooms  

E-Print Network (OSTI)

Recovery energy of the exhaust in air conditioning is very important to clean operating rooms. In disinfected operating rooms, we often use completely fresh air conditioning system in order to maintain cleanliness. All the return air of the air conditioning must be discharged. For recovering the exhaust energy, whole heat exchangers are used, and they may bring cross-infection in clean operating rooms. Cross-infection would negatively affect cleanness. This paper puts forward an air layer inside of a building's external wall that acts as a passageway for air conditioning exhaust, and also providing a place for the thermal exchange of the air conditioning exhaust. This kind of envelope is named an interlayer ventilation wall. There are two advantages. First, it will recover and reutilize the energy that the air conditioning exhaust takes, avoid cross-infection between the fresh air and the exhaust. Second, it will lower the energy loss of the heat exchange through the envelope. The energy saving effect will be very significant in clean operating rooms.

Feng, J.; Lian, Z.; Hou, Z.

2006-01-01T23:59:59.000Z

355

Control of Computer Room Air Conditioning using IT Equipment Sensors  

E-Print Network (OSTI)

Information and Communications Technology (ICT) managementof Information and Communications Technology Management andInformation and Communications Technology IPMI: Intelligent

Bell, Geoffrey C.

2010-01-01T23:59:59.000Z

356

Control of Computer Room Air Conditioning using IT Equipment  

E-Print Network (OSTI)

....................................................................................................................13 Glossary

357

TY RPRT  

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

Cooling the Planet Opportunities for Deployment of Superefficient Room Air Conditioners A1 Nihar Shah A1 Paul Waide A1 Amol Phadke KW appliance energy efficiency KW energy...

358

International Refrigeration: Order (2012-CE-1510)  

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

DOE ordered International Refrigeration Products to pay an $8,000 civil penalty after finding International Refrigeration had failed to certify that certain room air conditioners comply with the applicable energy conservation standard.

359

Electrolux: ENERGY STAR Referral (EW26SS70I*) | Department of...  

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

EW26SS70I*) Electrolux: ENERGY STAR Referral (EW26SS70I*) July 26, 2011 DOE referred Electrolux room air conditioner model EW26SS70I* to EPA, brand manager of the ENERGY STAR...

360

Electrolux: ENERGY STAR Referral (FRA256ST2) | Department of...  

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

FRA256ST2) Electrolux: ENERGY STAR Referral (FRA256ST2) July 7, 2011 DOE referred the matter of Electrolux room air conditioner model FRA256ST2 to the EPA for appropriate action...

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


361

Haier: ENERGY STAR Referral (ESA408J) | Department of Energy  

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

ESA408J) Haier: ENERGY STAR Referral (ESA408J) March 4, 2011 DOE referred Haier room air conditioner model ESA408J to EPA, brand manager of the ENERGY STAR program, for appropriate...

362

Friedrich: ENERGY STAR Referral (SS12M30) | Department of Energy  

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

SS12M30) Friedrich: ENERGY STAR Referral (SS12M30) August 16, 2011 DOE referred the matter of Friedrich room air conditioner SS12M30 to the U.S. Environmental Protection Agency,...

363

Friedrich: ENERGY STAR Referral (YM18M34-A) | Department of Energy  

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

Friedrich: ENERGY STAR Referral (YM18M34-A) Friedrich: ENERGY STAR Referral (YM18M34-A) August 18, 2011 DOE referred Friedrich room air conditioner YM18M34-A to EPA, brand manager...

364

Friedrich: ENERGY STAR Referral (SS14L10-E) | Department of Energy  

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

SS14L10-E) Friedrich: ENERGY STAR Referral (SS14L10-E) December 14, 2010 DOE referred the matter of Friedrich room air conditioner SS14L10-E to the U.S. Environmental Protection...

365

Friedrich: ENERGY STAR Referral (SM18M30) | Department of Energy  

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

SM18M30) Friedrich: ENERGY STAR Referral (SM18M30) March 16, 2011 DOE referred the matter of Friedrich room air conditioner model SM18M30 to the U.S. Environmental Protection...

366

Midea: ENERGY STAR Referral (MWF-08CR) | Department of Energy  

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

Midea: ENERGY STAR Referral (MWF-08CR) Midea: ENERGY STAR Referral (MWF-08CR) March 4, 2011 DOE referred the matter of Westpointe-brand room air conditioner model MWF-08CR, which...

367

Friedrich: ENERGY STAR Referral (CP15F10) | Department of Energy  

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

CP15F10) Friedrich: ENERGY STAR Referral (CP15F10) August 18, 2011 DOE referred the matter of Friedrich room air conditioner model CP15F10 to the U.S. Environmental Protection...

368

Haier: ENERGY STAR Referral (ESA3087) | Department of Energy  

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

ESA3087) Haier: ENERGY STAR Referral (ESA3087) December 21, 2010 DOE referred Haier room air conditioner model ESA3087 to EPA, brand manager of the ENERGY STAR program, for...

369

Friedrich: ENERGY STAR Referral (CP15F10) | Department of Energy  

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

CP15F10) Friedrich: ENERGY STAR Referral (CP15F10) March 4, 2011 DOE referred the matter of Friedrich room air conditioner model CP15F10 to the U.S. Environmental Protection...

370

Danby: ENERGY STAR Referral (DAC10507EE) | Department of Energy  

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

Danby: ENERGY STAR Referral (DAC10507EE) Danby: ENERGY STAR Referral (DAC10507EE) November 4, 2010 DOE referred the matter of Danby room air conditioner model DAC10507EE to the EPA...

371

Page not found | Department of Energy  

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

01 - 8210 of 11,722 results. Download Friedrich: ENERGY STAR Referral (SS14L10-E) DOE referred the matter of Friedrich room air conditioner SS14L10-E to the EPA for appropriate...

372

Electrolux: ENERGY STAR Referral (GAH105Q2T1) | Department of...  

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

GAH105Q2T1) Electrolux: ENERGY STAR Referral (GAH105Q2T1) October 5, 2010 DOE referred the matter of Electrolux room air conditioner model GAH105Q2T1 to the EPA for appropriate...

373

CX-008759: Categorical Exclusion Determination  

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

Information Operations & Research Center (IORC) Room E-6 Air Conditioner Unit Installation CX(s) Applied: B1.4 Date: 05/09/2012 Location(s): Idaho Offices(s): Idaho Operations Office

374

SCE - Residential Energy Efficiency Rebate Program | Department...  

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

Freezer Recycling: 35 Electric Water Heater: 30 Room Air Conditioner: 20 Whole House Fan: 50 Evaporative Cooler: 300 Summer AC Cycling: 100-200 Pool Pump and Motor: 200...

375

Reading Room | Department of Energy  

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

Reading Reading Room Reading Room Welcome to the Freedom of Information Act (FOIA) Electronic Reading Room for the Department of Energy at Headquarters. The FOIA requires certain kinds of documents to be made available to the public for inspection and copying. This is a requirement for agencies of the executive branch of the federal government. The documents that are required to be made available by the FOIA are: Final Opinions [5 USC 552 (a)(2)](A) final opinions, including concurring and dissenting opinions, as well as orders, made in the adjudication of cases. Office of Hearings and Appeal - FOIA Appeals Initial agency determinations in response to FOIA and Privacy Act requests may be appealed to the Office of Hearings and Appeals (OHA). Decisions of the OHA constitute the agency's final determinations on requests made under

376

Reading Room | Department of Energy  

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

Freedom of Information Act » Reading Freedom of Information Act » Reading Room Reading Room Welcome to the Freedom of Information Act (FOIA) Electronic Reading Room for the Department of Energy at Headquarters. The FOIA requires certain kinds of documents to be made available to the public for inspection and copying. This is a requirement for agencies of the executive branch of the federal government. The documents that are required to be made available by the FOIA are: Final Opinions [5 USC 552 (a)(2)](A) final opinions, including concurring and dissenting opinions, as well as orders, made in the adjudication of cases. Office of Hearings and Appeal - FOIA Appeals Initial agency determinations in response to FOIA and Privacy Act requests may be appealed to the Office of Hearings and Appeals (OHA). Decisions of

377

Room ventilation and its influence on the performance of fume cupboards: A parametric numerical study  

Science Conference Proceedings (OSTI)

The three-dimensional turbulent flow in a typical chemical laboratory containing two fume cupboards and furniture is investigated numerically in order to obtain detailed information needed for the improved design of ventilating systems for such rooms. The flow inside the two fume cupboards is simulated simultaneously with the room flow, and its dependence on the flow structure in the room is shown. The flow inside the cupboards and in the vicinity of their sash openings has been found to be essentially three-dimensional. Several room parameters are varied, and a quantitative evaluation of their influence on the flow, the comfort characteristics, and the ventilation efficiency is given. Additional ceiling-mounted openings, which extract room air outside the fume cupboards, can affect the capture efficiency of the cupboards, as well as the quality of the air in the room. It has been found also that small changes in the position of the radial inlet ceiling-mounted diffuser can influence the air quality of the room and at the same time the draught risk. These effects are shown for a given room arrangement. To accommodate the complex geometry, the elliptical nature of the mathematical problem, and the use of a turbulence model, a multigrid acceleration method with 245,000 control volumes is used, allowing CPU times on a workstation to become acceptable.

Denev, J.A.; Durst, F.; Mohr, B. [Friedrich Alexander Univ. Erlangen-Nuernberg, Erlangen (Germany)] [Friedrich Alexander Univ. Erlangen-Nuernberg, Erlangen (Germany)

1997-02-01T23:59:59.000Z

378

Riverland Energy Cooperative - Residential Energy Efficiency Rebate Program  

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

Riverland Energy Cooperative - Residential Energy Efficiency Rebate Riverland Energy Cooperative - Residential Energy Efficiency Rebate Program Riverland Energy Cooperative - Residential Energy Efficiency Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heating Cooling Appliances & Electronics Construction Heat Pumps Commercial Lighting Lighting Water Heating Program Info State Wisconsin Program Type Utility Rebate Program Rebate Amount General Lighting: $1 - $15 LED Bulbs: $2/unit Occupancy Sensors: $5 Clothes Washers: $25 Dishwashers: $25 Dehumidifiers: $25 Refrigerators: $25 Room Air Conditioners: $25 Refrigerator/Freezer Recycling: $25 Room Air Conditioner Recycling: $25 Central Air Conditioner: $40 - $80/Ton Electric Water Heater: $50 - $300 Water Heater Installation Cost: $20 - $150

379

Room temperature terahertz polariton emitter  

SciTech Connect

Terahertz (THz) range electroluminescence from intersubband polariton states is observed in the ultra strong coupling regime, where the interaction energy between the collective excitation of a dense electron gas and a photonic mode is a significant portion of the uncoupled excitation energy. The polariton's increased emission efficiency along with a parabolic electron confinement potential allows operation up to room temperature in a nonresonant pumping scheme. This observation of room temperature electroluminescence of an intersubband device in the THz range is a promising proof of concept for more powerful THz sources.

Geiser, Markus; Scalari, Giacomo; Castellano, Fabrizio; Beck, Mattias; Faist, Jerome [Institute for Quantum Electronics, ETH Zurich, Wolfgang-Pauli-Strasse 16, 8093 Zurich (Switzerland)

2012-10-01T23:59:59.000Z

380

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

SciTech Connect

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.

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

2011-01-01T23:59:59.000Z

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


381

SLAC National Accelerator Laboratory - Meeting Rooms  

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

41 144D 3117 30-C Blue Room (20) 41 207 2868 30-C Castle Craigs Conference Room 280B 241 2804 29-D Cedar Room (15) 48 101 3485 30-B CEF Conference Room 35 4A 3534 27-E Controls...

382

Air Quality  

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

Environment Feature Stories Public Reading Room: Environmental Documents, Reports LANL Home Phonebook Calendar Video Community, Environment Environmental Stewardship ...

383

Perfluorocarbon tracer method for air-infiltration measurements  

DOE Patents (OSTI)

A method of measuring air infiltration rates suitable for use in rooms of homes and buildings comprises the steps of emitting perfluorocarbons in the room to be measured, sampling the air containing the emitted perfluorocarbons over a period of time, and analyzing the samples at a laboratory or other facility.

Dietz, R.N.

1982-09-23T23:59:59.000Z

384

Forecasting Uncertain Hotel Room Demand  

E-Print Network (OSTI)

Economic systems are characterized by increasing uncertainty in their dynamics. This increasing uncertainty is likely to incur bad decisions that can be costly in financial terms. This makes forecasting of uncertain economic variables an instrumental activity in any organization. This paper takes the hotel industry as a practical application of forecasting using the Holt-Winters method. The problem here is to forecast the uncertain demand for rooms at a hotel for each arrival day. Forecasting is part of hotel revenue management system whose objective is to maximize the revenue by making decisions regarding when to make rooms available for customers and at what price. The forecast approach discussed in this paper is based on quantitative models and does not incorporate management expertise. Even though, forecast results are found to be satisfactory for certain days, this is not the case for other arrival days. It is believed that human judgment is important when dealing with ...

Mihir Rajopadhye Mounir; Mounir Ben Ghaliay; Paul P. Wang; Timothy Baker; Craig V. Eister

2001-01-01T23:59:59.000Z

385

DOE Solar Decathlon: Press Room  

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

Press Room Press Room The U.S. Department of Energy Solar Decathlon is an award-winning program that challenges collegiate teams to design, build, and operate solar-powered houses that are cost-effective, energy-efficient, and attractive. The winner of the competition is the team that best blends affordability, consumer appeal, and design excellence with optimal energy production and maximum efficiency. The first Solar Decathlon was held in 2002; the competition has since occurred every two years in 2005, 2007, 2009, and 2011. The last event was held at the National Mall's West Potomac Park in Washington, D.C., Sept. 23-Oct. 2, 2011. Solar Decathlon 2013 takes place Oct. 3-13, 2013, at Orange County Great Park in Irvine, California. Open to the public free of charge, the Solar Decathlon gives visitors the

386

News Room | Argonne National Laboratory  

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

News Room News Room In a 3D structure of the protein, the binding site is shown in pink, representing a potential drug target. The green molecule shows binding of an antibiotic to the protein. Click to enlarge. Image courtesy of Wladek Minor. Newly ID'd protein provides target for antibiotic-resistant hospital bacterium Full Story » Researchers have made inroads into tackling a bacterium that plagues hospitals and is highly resistant to most antibiotics. Andrey Elagin (left), postdoctoral scholar at the Enrico Fermi Institute at the University of Chicago, and Matthew Wetstein, the Grainger Postdoctoral Fellow at the Enrico Fermi Institute at the University of Chicago, adjust the optics in the Large Area Picosecond Photodetector testing facility. The facility uses extremely short laser pulses to precisely measure the time resolution of the photodetectors. Click to enlarge.

387

NETL: NewsRoom - Multimedia  

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

NewsRoom NewsRoom Multimedia Now you can download videos to your computer by right clicking the "download" link and selecting the "Save target as" option. It is suggested that mac users use this link. Carbon Cycle Animation Carbon Cycle Animation - 2012 Animation that depicts the carbon cycle as it relates to nature, land use, and energy production. Movie Icon Windows Media Video (WMV-5.7MB) [ view | download ] Earth Day Animation Earth Day Animation - 2011 A compilation of three Earth Day animations that demonstrate being green around your home, office, and community Movie Icon Windows Media Video (WMV-16MB) [ view | download ] Interview with Anthony Cugini Interview with Anthony Cugini - 2011 Interview at the International Pittsburgh Coal Conference with Dr. Cugini regarding Carbon Capture Utilization and Storage technologies.

388

Classified Reading Room Instructions/Guidelines  

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

Classified Reading Room Instructions/Guidelines Classified Reading Room Instructions/Guidelines * Reading Room Points of Contact: Milesha Grier, (202) 586-8210, milesha.gier@nnsa.doe.gov Reading Room Location: DOE Forrestal Building, 1000 Independence Ave., Washington, D.C. Room 4A-045, 4 th Floor, "A" Corridor, Behind Glass Doors, dial 6-8210 Reading Room Availability: By Appointment - Reading Room will be available until RFP Closes except (12/5/11 thru 12/16/11, December 23, January 2, 2012 and January 16, 2012). Reading Room Hours: Morning, 9:00 a.m. - 11:30 a.m.; and Afternoon 1:00 p.m. - 3:30 p.m. Reading Room Will Accommodate: Up to 5-6 people * All personnel must: a. submit a formal Intent to Bid IAW Section L of the RFP, via email to: SEB1@doeal.gov

389

Media Room | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Media Room | National Nuclear Security Administration Media Room | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog The National Nuclear Security Administration Media Room Home > Media Room Media Room NNSA's Office of Congressional, Intergovernmental, and Public Affairs regularly updates the web site with current press releases, newsletters,

390

Microsoft Word - DOE-ID-INL-12-019.doc  

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

9 9 SECTION A. Project Title: INL Administration Building (IAB)Telephone Room 112 Heating, Ventilating, and Air Conditioning (HVAC) Upgrade SECTION B. Project Description: The proposed project will install a new air conditioning unit in the INL Administration Building room 112. The new air conditioning system will handle the equipment heat loads within this room. Room 112 is an unclassified telephone room that is not normally occupied. This room has one supply air diffuser and one return air grille that are insufficient for proper ambient air temperatures. It is assumed that no future addition of equipment loads will take place. A 3-ton Liebert DataMate air conditioner (inside and outside units) will be installed, which should be sufficient to cool the room. Liebert units are high quality data center air conditioners that are designed

391

Microsoft Word - DOE-ID-INL-12-019.doc  

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

9 9 SECTION A. Project Title: INL Administration Building (IAB)Telephone Room 112 Heating, Ventilating, and Air Conditioning (HVAC) Upgrade SECTION B. Project Description: The proposed project will install a new air conditioning unit in the INL Administration Building room 112. The new air conditioning system will handle the equipment heat loads within this room. Room 112 is an unclassified telephone room that is not normally occupied. This room has one supply air diffuser and one return air grille that are insufficient for proper ambient air temperatures. It is assumed that no future addition of equipment loads will take place. A 3-ton Liebert DataMate air conditioner (inside and outside units) will be installed, which should be sufficient to cool the room. Liebert units are high quality data center air conditioners that are designed

392

Novel room temperature ferromagnetic semiconductors  

SciTech Connect

Today's information world, bits of data are processed by semiconductor chips, and stored in the magnetic disk drives. But tomorrow's information technology may see magnetism (spin) and semiconductivity (charge) combined in one 'spintronic' device that exploits both charge and 'spin' to carry data (the best of two worlds). Spintronic devices such as spin valve transistors, spin light emitting diodes, non-volatile memory, logic devices, optical isolators and ultra-fast optical switches are some of the areas of interest for introducing the ferromagnetic properties at room temperature in a semiconductor to make it multifunctional. The potential advantages of such spintronic devices will be higher speed, greater efficiency, and better stability at a reduced power consumption. This Thesis contains two main topics: In-depth understanding of magnetism in Mn doped ZnO, and our search and identification of at least six new above room temperature ferromagnetic semiconductors. Both complex doped ZnO based new materials, as well as a number of nonoxides like phosphides, and sulfides suitably doped with Mn or Cu are shown to give rise to ferromagnetism above room temperature. Some of the highlights of this work are discovery of room temperature ferromagnetism in: (1) ZnO:Mn (paper in Nature Materials, Oct issue, 2003); (2) ZnO doped with Cu (containing no magnetic elements in it); (3) GaP doped with Cu (again containing no magnetic elements in it); (4) Enhancement of Magnetization by Cu co-doping in ZnO:Mn; (5) CdS doped with Mn, and a few others not reported in this thesis. We discuss in detail the first observation of ferromagnetism above room temperature in the form of powder, bulk pellets, in 2-3 mu-m thick transparent pulsed laser deposited films of the Mn (<4 at. percent) doped ZnO. High-resolution transmission electron microscopy (HRTEM) and electron energy loss spectroscopy (EELS) spectra recorded from 2 to 200nm areas showed homogeneous distribution of Mn substituting for Zn a 2+ state in the ZnO lattice. Ferromagnetic Resonance (FMR) technique is used to confirm the existence of ferromagnetic ordering at temperatures as high as 425K. The ab initio calculations were found to be consistent with the observation of ferromagnetism arising from fully polarized Mn 2+ state. The key to observed room temperature ferromagnetism in this system is the low temperature processing, which prevents formation of clusters, secondary phases and the host ZnO from becoming n-type. The electronic structure of the same Mn doped ZnO thin films studied using XAS, XES and RIXS, revealed a strong hybridization between Mn 3d and O 2p states, which is an important characteristic of a Dilute magnetic Semiconductor (DMS). It is shown that the various processing conditions like sintering temperature, dopant concentration and the properties of precursors used for making of DMS have a great influence on the final properties. Use of various experimental techniques to verify the physical properties, and to understand the mechanism involved to give rise to ferromagnetism is presented. Methods to improve the magnetic moment in Mn doped ZnO are also described. New promising DMS materials (such as Cu doped ZnO are explored). The demonstrated new capability to fabricate powder, pellets, and thin films of room temperature ferromagnetic semiconductors thus makes possible the realization of a wide range of complex elements for a variety of new multifunctional phenomena related to Spintronic devices as well as magneto-optic components.

Gupta, Amita

2004-11-01T23:59:59.000Z

393

DOE-HDBK-1169-2003; DOE Handbook Nuclear Air Cleaning Handbook  

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

area and incorporating, as a minimum, a HEPA filter and a fan. Nuclear Air Cleaning Handbook U.S. Department of Energy G-2 Clean Room-An occupied room designed to maintain a...

394

Calendar Year 2007 Program Benefits for U.S. EPA Energy Star Labeled Products: Expanded Methodology  

E-Print Network (OSTI)

Gas or Oil) Central Air Conditioner Air-Source Heat PumpGas or Oil) - Central Air Conditioner - Air-Source HeatGas or Oil) - Central Air Conditioner - Air-Source Heat

Sanchez, Marla

2010-01-01T23:59:59.000Z

395

Energy Integration Visualization Room (Fact Sheet)  

SciTech Connect

This two-page fact sheet describes the new Energy Integration Visualization Room in the ESIF and talks about some of the capabilities and unique visualization features of the the room.

Not Available

2012-08-01T23:59:59.000Z

396

The room noise criteria (RNC) metric.  

Science Conference Proceedings (OSTI)

The recent ANSI S12.2:2008 room noise criteria contains both a survey and an engineering method to specify room noise criteria. The methods use A?weighting and extended NC

2009-01-01T23:59:59.000Z

397

Room temperature nano- and microstructure photon detectors  

Science Conference Proceedings (OSTI)

The development of room temperature infrared (IR) detectors for wavelengths beyond NIR will open up many applications that are currently limited due to cooling requirements. Three approaches are discussed, which show promise for room temperature IR detection. ... Keywords: Infrared, PbS quantum dot, Room temperature detector, Split-off band, Tunneling quantum dot

A. G. U. Perera; P. V. V. Jayaweera; G. Ariyawansa; S. G. Matsik; K. Tennakone; M. Buchanan; H. C. Liu; X. H. Su; P. Bhattacharya

2009-03-01T23:59:59.000Z

398

Magnetic Refrigeration Technology for High Efficiency Air Conditioning  

SciTech Connect

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.

Boeder, A; Zimm, C

2006-09-30T23:59:59.000Z

399

Dehumidifying Heat Pipes | Department of Energy  

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

Dehumidifying Heat Pipes Dehumidifying Heat Pipes Dehumidifying Heat Pipes June 24, 2012 - 4:32pm Addthis In order to make a room comfortable in hot, humid climates, an air conditioner must lower the indoor humidity level as well as the air temperature. If an air conditioner fails to lower the humidity adequately, the air will be cool, but will feel uncomfortably damp. Inappropriately sized air conditioners are prone to this problem; large units quickly cool the air, but cycle off before they can properly dehumidify it. In extremely humid climates, even correctly sized air conditioning equipment could fail to maintain a home at a comfortable humidity level. One technology that addresses this problem is the dehumidifying heat pipe, a device that enables an air conditioner to dehumidify better and still

400

FOIA Reading Room - privacy act  

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

Reading Room - pricacy act Reading Room - pricacy act CH Frequently Requested Documents Under FOIA Administrative Electronic FOIA Form Privacy Act Advisory (Microsoft Word(tm) document) DOE-CH Government Purchase Card Cardholders: December 2012 CH Organizational Chart: Current Version Policies and Procedures - Office of Science (including Chicago Office) Office of Hearings and Appeals Decisions Department of Justice Cases and Legal Documents Department of Energy Directives DOE Office of Inspector General Reports Responses Under FOIA FY10 Management and Operating Contracts "FY2012 Laboratory Performance Report Cards" The following management and operating prime contracts under the jurisdiction of DOE-CH have been renewed and posted for your convenience. Modifications that change, delete, or add language to any portion of these contracts (referred to as "M" Mods) will be posted as expeditiously as possible after execution. It is at the discretion of the Contractors whether or not they include modifications that change the amount obligated by the Government. Ames Laboratory - Contract No. No.DE-AC02-07CH11358

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


401

Reading Room | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Reading Room | National Nuclear Security Administration Reading Room | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog The National Nuclear Security Administration Reading Room Home > About Us > Our Operations > Acquisition and Project Management > Major Contract Solicitations > Environmental Program Services Contract > Reading Room

402

Heating remote rooms in passive solar buildings  

DOE Green Energy (OSTI)

Remote rooms can be effectively heated by convection through a connecting doorway. A simple steady-state equation is developed for design purposes. Validation of a dynamic model is achieved using data obtained over a 13-day period. Dynamic effects are investigated using a simulation analysis for three different cases of driving temperature; the effect is to reduce the temperature difference between the driving room and the remote room compared to the steady-state model. For large temperature swings in the driving room a strategy which uses the intervening door in a diode mode is effective. The importance of heat-storing mass in the remote room is investigated.

Balcomb, J.D.

1981-01-01T23:59:59.000Z

403

Matchstick: A Room-to-Room Thermal Model for Predicting Indoor Temperature from Wireless Sensor Data  

E-Print Network (OSTI)

Matchstick: A Room-to-Room Thermal Model for Predicting Indoor Temperature from Wireless Sensor present a room-to-room thermal model used to accurately predict temperatures in residential buildings. We that our model can predict future indoor temperature trends with a 90th percentile aggregate error between

Hazas, Mike

404

Public Reading Room: Environmental Documents, Reports  

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

Public Reading Room: Environmental Documents, Reports Public Reading Room: Environmental Documents, Reports Public Reading Room: Environmental Documents, Reports Environmental documents and reports are available online. Hard copies are available at the Laboratory's Public Reading Room in Pojoaque, New Mexico. Contact Environmental Communication & Public Involvement P.O. Box 1663 MS M996 Los Alamos, NM 87545 (505) 667-0216 Email Public Reading Room: Environmental Documents, Reports Online Annual Environmental Report Electronic Public Reading Room (EPRR) Plans, Procedures A listing of procedures available in the EPRR Hard copy Public Reading Room 94 Cities of Gold Road Pojoaque, NM Vie Screen reader users: click here for plain HTML Go to Google Maps Home 94 cities of gold Road, Pojoaque, NM Loading... Map Sat Ter Did you mean a different:

405

Sorption of organic gases in a furnished room  

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

a furnished room a furnished room Title Sorption of organic gases in a furnished room Publication Type Journal Article LBNL Report Number LBNL-53943 Year of Publication 2004 Authors Singer, Brett C., Kenneth L. Revzan, Toshifumi Hotchi, Alfred T. Hodgson, and Nancy J. Brown Journal Atmospheric Environment Volume 38 Start Page Chapter Issue 16 Pagination 2483-2494 Abstract We present experimental data and semi-empirical models describing the sorption of organic gases in a simulated indoor residential environment. Two replicate experiments were conducted with 20 volatile organic compounds (VOCs) in a 50-m3 room finished with painted wallboard, carpet and cushion, draperies and furnishings. The VOCs span a wide volatility range and include ten Hazardous Air Pollutants. VOCs were introduced to the static chamber as a pulse and their gas-phase concentrations were measured during a net adsorption period and a subsequent net desorption period. Three sorption models were fit to the measured concentrations for each compound to determine the simplest formulation needed to adequately describe the observed behavior. Sorption parameter values were determined by fitting the models to adsorption period data then checked by comparing measured and predicted behavior during desorption. The adequacy of each model was evaluated using a goodness of fit parameter calculated for each period. Results indicate that sorption usually does not greatly affect indoor concentrations of methyl-tert-butyl ether, 2-butanone, isoprene and benzene. In contrast, sorption appears to be a relevant indoor process for many of the VOCs studied, including C8-C10 aromatic hydrocarbons (HC), terpenes, and pyridine. These compounds sorbed at rates close to typical residential air change rates and exhibited substantial sorptive partitioning at equilibrium. Polycyclic aromatic HCs, aromatic alcohols, ethenylpyridine and nicotine initially adsorbed to surfaces at rates of 1.5 to >6 h-1 and partitioned 95 to >99% in the sorbed phase at equilibrium

406

Validation and Application of the Room Model of the Modelica Buildings  

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

Validation and Application of the Room Model of the Modelica Buildings Validation and Application of the Room Model of the Modelica Buildings Library Title Validation and Application of the Room Model of the Modelica Buildings Library Publication Type Conference Proceedings LBNL Report Number LBNL-5932E Year of Publication 2012 Authors Nouidui, Thierry Stephane, Kaustubh Phalak, Wangda Zuo, and Michael Wetter Conference Name Proc. of the 9th International Modelica Conference Date Published 09/2012 Conference Location Munich, Germany Abstract The Modelica Buildings library contains a package with a model for a thermal zone that computes heat transfer through the building envelope and within a room. It considers various heat transfer phenomena of a room, including conduction, convection, short-wave and long-wave radiation. The first part of this paper describes the physical phenomena considered in the room model. The second part validates the room model by using a standard test suite provided by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE). The third part focuses on an application where the room model is used for simulation-based controls of a window shading device to reduce building energy consumption.

407

Air Quality  

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

What We Monitor & Why » What We Monitor & Why » Air Quality Air Quality To preserve our existing wilderness-area air quality, LANL implements a conscientious program of air monitoring. April 12, 2012 Real-time data monitoring for particulate matter An air monitoring field team member tests one of LANL's tapered element oscillating microbalance samplers, which collects real-time particulate matter data. Contact Environmental Communication & Public Involvement P.O. Box 1663 MS M996 Los Alamos, NM 87545 (505) 667-0216 Email LANL monitors air quality 24 hours a day, 365 days a year. Why we monitor air LANL monitors many different pathways in order to assess their impact on workers, the public, animals, and plants. We monitor the air around the Laboratory to ensure our operations are not affecting the air of nearby

408

NEPA Reading Room | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Reading Room | National Nuclear Security Administration Reading Room | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog NEPA Reading Room Home > About Us > Our Operations > NNSA Office of General Counsel > National Environmental Policy Act (NEPA) > NEPA Reading Room NEPA Reading Room Welcome to the National Nuclear Security Administration's NEPA Reading

409

Ga Air Compressor, Ga Air Compressor Products, Ga Air ...  

U.S. Energy Information Administration (EIA)

Ga Air Compressor, You Can Buy Various High Quality Ga Air Compressor Products from Global Ga Air Compressor Suppliers and Ga Air Compressor ...

410

Data for Room Fire Model Comparisons  

Science Conference Proceedings (OSTI)

... of the burn room; and, possibly, a load platform. ... by the use of the oxygen consumption principle ... be used to estimate the rate of energy production of ...

2004-10-05T23:59:59.000Z

411

NEPA Reading Room | National Nuclear Security Administration  

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

NEPA Reading Room | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing...

412

NEPA Reading Room | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Reading Room | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our...

413

Appliances and Commercial Equipment Standards  

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

Residential Central Air Conditioners and Heat Pumps Residential Central Air Conditioners and Heat Pumps Sign up for e-mail updates on regulations for this and other products Manufacturers have been required to comply with the Department of Energy's (DOE) energy conservation standards for residential central air conditioners and heat pumps since 1992. Residential central air conditioners and heat pumps are installed as part of a home's central heating and cooling system. They use ducts to distribute cooled or dehumidified air to more than one room. Residential central air conditioners and heat pumps include split system central air conditioners and heat pumps; single package central air conditioners, small-duct high-velocity products, and space constrained products. The standards mandatory in 1992 and 1993 will save approximately 2.9 quads of energy and result in approximately $29 billion in energy bill savings from 1993-2023. The standard will avoid about 160 million metric tons of carbon dioxide emissions, equivalent to the annual greenhouse gas emissions of about 31.4 million automobiles.

414

A study towards applying thermal inertia for energy conservation in rooms  

Science Conference Proceedings (OSTI)

We are in an age where people are paying increasing attention to energy conservation around the world. The heating and air-conditioning systems of buildings introduce one of the largest chunks of energy expenses. In this article, we make a key observation ... Keywords: Thermal inertia, energy conservation, room management, wireless sensor networks

Yi Yuan; Dawei Pan; Dan Wang; Xiaohua Xu; Yu Peng; Xiyuan Peng; Peng-Jun Wan

2013-11-01T23:59:59.000Z

415

The Live Room: transducing resonant architectures  

Science Conference Proceedings (OSTI)

The Live Room was a temporary site-specific installation presented in building N51, room 117 on the MIT campus on 7 May 1998 and concluded on 10 June 1998. Using small acoustic-intensifying equipment which mounted directly to the structure of ...

Mark Bain

2003-08-01T23:59:59.000Z

416

Hot Air Stratification of Ceiling Air Supply in a Large Space Building  

E-Print Network (OSTI)

The effects of different states of air supply and airflow patterns on temperature gradient distribution are calculated and analyzed with the help of FFSV3.0 software, using the LB models and LES and RANS methods. An experimental study with upper supply and upper return air flow was performed in normal airflow room. The results were compared with numerical simulation results and were found to agree well. Information on delaminating laws, and measurements of the relationship of delaminating heights and air supply temperature and velocity is also presented. According to the simulation results, a formula that avoids hot air delaminating in ceiling air supply is derived, which can guide engineering design.

Wang, H.; Wang, Z.; Liu, C.

2006-01-01T23:59:59.000Z

417

DOE-ID FOIA Reading Room  

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

Reading Room Reading Room READING ROOM Eectronic Freedom of Information Act, E-FOIA RECORDS UNDER THE E-FOIA The Electronic Freedom of Information Act Amendments of 1996 addresses the issues and procedural aspects of FOIA administration. The amendment: defines the term "record" as including "any information that would be an agency record subject to the requirements of the FOIA when maintained by an agency in any format, including an electronic format; addresses the form or format in which a requested record is disclosed providing the record is readily reproducible by the agency in the requestor's desired form or format; directs Federal agencies to maintain both conventional reading rooms and electronic reading rooms to meet FOIA responsibilities.

418

Los Alamos test-room results  

DOE Green Energy (OSTI)

Fourteen Los Alamos test rooms have been operated for several years; this paper covers operation during the winters of 1980-81 and 1981-82. Extensive data have been taken and computer analyzed to determine performance parameters such as efficiency, solar savings fraction, and comfort index. The rooms are directly comparable because each has the same net coefficient and solar collection area and thus the same load collector ratio. Configurations include direct gain, unvented Trombe walls, water walls, phase change walls, and two sunspace geometries. Strategies for reducing heat loss include selective surfaces, two brands of superglazing windows, a heat pipe system, and convection-suppression baffles. Significant differences in both backup heat and comfort are observed among the various rooms. The results are useful, not only for direct room-to-room comparisons, but also to provide data for validation of computer simulation programs.

McFarland, R.D.; Balcomb, J.D.

1982-01-01T23:59:59.000Z

419

REVIEW OF AIR FLOW MEASUREMENT TECHNIQUES  

Office of Scientific and Technical Information (OSTI)

9747 9747 Review of Airflow Measurement Techniques Jennifer McWilliams Energy Performance of Buildings Group Environmental Energy Technologies Division Lawrence Berkeley National Laboratory Berkeley, CA 94720 December 1, 2002 Abstract Airflow measurement techniques are necessary to determine the most basic of indoor air quality questions: "Is there enough fresh air to provide a healthy environment for the occupants of the building?" This paper outlines airflow measurement techniques, but it does not make recommendations for techniques that should be used. The airflows that will be discussed are those within a room or zone, those between rooms or zones, such as through doorways (open or closed) or passive vents, those between the building and

420

Duke Energy - Residential and Builder Energy Efficiency Rebate...  

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

Heat Pump: 300 (builder) New Home Air Conditioner: 300 (builder) Attic Insulation and Air Sealing: 250 Duct Sealing: 100 Heat Pump and Air Conditioner Tune Up: 50 AC...

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


421

Microwave remote sensing of ionized air.  

SciTech Connect

We present observations of microwave scattering from ambient room air ionized with a negative ion generator. The frequency dependence of the radar cross section of ionized air was measured from 26.5 to 40 GHz (Ka-band) in a bistatic mode with an Agilent PNA-X series (model N5245A) vector network analyzer. A detailed calibration scheme is provided to minimize the effect of the stray background field and system frequency response on the target reflection. The feasibility of detecting the microwave reflection from ionized air portends many potential applications such as remote sensing of atmospheric ionization and remote detection of radioactive ionization of air.

Liao, S.; Gopalsami, N.; Heifetz, A.; Elmer, T.; Fiflis, P.; Koehl, E. R.; Chien, H. T.; Raptis, A. C. (Nuclear Engineering Division)

2011-07-01T23:59:59.000Z

422

NREL Provides Guidance to Improve Air Mixing and Thermal Comfort in Homes (Fact Sheet)  

DOE Green Energy (OSTI)

NREL research determines optimal HVAC system design for proper air mixing and thermal comfort in homes. As U.S. homes become more energy efficient, heating, ventilation, and cooling (HVAC) systems will be downsized, and the air flow volumes required to meet heating and cooling loads may be too small to maintain uniform room air mixing-which can affect thermal comfort. Researchers at the National Renewable Energy Laboratory (NREL) evaluated the performance of high sidewall air supply inlets and confirmed that these systems can achieve good air mixing and provide suitable comfort levels for occupants. Using computational fluid dynamics modeling, NREL scientists tested the performance of high sidewall supply air jets over a wide range of parameters including supply air temperature, air velocity, and inlet size. This technique uses the model output to determine how well the supply air mixes with the room air. Thermal comfort is evaluated by monitoring air temperature and velocity in more than 600,000 control volumes that make up the occupied zone of a single room. The room has an acceptable comfort level when more than 70% of the control volumes meet the comfort criteria on both air temperature and velocity. The study shows that high sidewall supply air jets achieve uniform mixing in a room, which is essential for providing acceptable comfort levels. The study also provides information required to optimize overall space conditioning system design in both heating and cooling modes.

Not Available

2012-02-01T23:59:59.000Z

423

1COPYRIGHT 2013 MITSUBISHI ELECTRIC EUROPE B.V. ALL RIGHTS RESERVED. 2COPYRIGHT 2013 MITSUBISHI ELECTRIC EUROPE B.V. ALL RIGHTS RESERVED.  

E-Print Network (OSTI)

MITSUBISHI ELECTRIC EUROPE B.V. ALL RIGHTS RESERVED. Drastic energy savings with VRF technology Air Corporation Mitsubishi Electric Living Environment System VRF heat pump technology replaces conventional oil center, hospitals VRF systems Heat Pumps (Air/Water)Packaged/ Room Air Conditioners #12;8COPYRIGHT © 2013

Oak Ridge National Laboratory

424

Air Conditioning Stall Phenomenon Testing, Model Development, and Simulation  

Science Conference Proceedings (OSTI)

Electric distribution systems are experiencing power quality issues of extended reduced voltage due to fault-induced delayed voltage recovery (FIDVR). FIDVR occurs in part because modern air conditioner (A/C) and heat pump compressor motors are much more susceptible to stalling during a voltage sag or dip such as a sub-transmission fault. They are more susceptible than older A/C compressor motors due to the low inertia of these newer and more energy efficient motors. There is a concern that these local reduced voltage events on the distribution system will become more frequent and prevalent and will combine over larger areas and challenge transmission system voltage and ultimately power grid reliability. The Distributed Energy Communications and Controls (DECC) Laboratory at Oak Ridge National Laboratory (ORNL) has been employed to (1) test, (2) characterize and (3) model the A/C stall phenomenon.

Irminger, Philip [ORNL; Rizy, D Tom [ORNL; Li, Huijuan [ORNL; Smith, Travis [ORNL; Rice, C Keith [ORNL; Li, Fangxing [ORNL; Adhikari, Sarina [ORNL

2012-01-01T23:59:59.000Z

425

Design of the CTX diagnostics screen room  

DOE Green Energy (OSTI)

The design of a shielded enclosure (or screen room) to house data acquisition equipment in an area in which substantial, time varying magnetic fields are present and capable of producing significant interference is described.

Chandler, G.I. II

1981-01-01T23:59:59.000Z

426

Eau Claire Energy Cooperative - Residential Energy Efficiency Rebate  

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

Eau Claire Energy Cooperative - Residential Energy Efficiency Eau Claire Energy Cooperative - Residential Energy Efficiency Rebate Program Eau Claire Energy Cooperative - Residential Energy Efficiency Rebate Program < Back Eligibility Multi-Family Residential Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Manufacturing Heat Pumps Commercial Lighting Lighting Water Heating Program Info State Wisconsin Program Type Utility Rebate Program Rebate Amount Clothes washer: $25 Dishwashers: $25 Refrigerators: $25 Room Air Conditioner: $25 Dehumidifier: $25 Refrigerator/Freezer/Room AC Recycling: $25 Central Air Conditioner/Mini Split: $40 - $80/Ton Air Source Heat Pump/Mini-Split Heat Pumps: $150/Ton Package Terminal Heat Pump: $150/Ton Geothermal Heat Pump: $300/Ton

427

Software Support during a Control Room Upgrade  

SciTech Connect

In 2004, after 14 years of accelerator operations and commissioning, Jefferson Lab renovated its main control room. Changes in technology and lessons learned during those 14 years drove the control room redesign in a new direction, one that optimizes workflow and makes critical information and controls available to everyone in the control room. Fundamental changes in a variety of software applications were required to facilitate the new operating paradigm. A critical component of the new control room design is a large-format video wall that is used to make a variety of operating information available to everyone in the room. Analog devices such as oscilloscopes and function generators are now displayed on the video wall through two crosspoint switchers: one for analog signals and another for video signals. A new software GUI replaces manual configuration of the oscilloscopes and function generators and helps automate setup. Monitoring screens, customized for the video wall, now make important operating information visible to everyone, not just a single operator. New alarm handler software gives any operator, on any workstation, access to all alarm handler functionality, and multiple users can now contribute to a single electronic logbook entry. To further support the shift to distributed access and control, many applications have been redesigned to run on servers instead of on individual workstations.

Michele Joyce; Michael Spata; Thomas Oren; Anthony Cuffe; Theo McGuckin; Isadoro Carlino; C. Higgins; Harry Fanning; Matthew Bickley; Brian Bevins

2005-09-21T23:59:59.000Z

428

TRANSIENT ACCIDENT ANALYSIS OF THE GLOVEBOX SYSTEM IN A LARGE PROCESS ROOM  

DOE Green Energy (OSTI)

Local transient hydrogen concentrations were evaluated inside a large process room when the hydrogen gas was released by three postulated accident scenarios associated with the process tank leakage and fire leading to a loss of gas confinement. The three cases considered in this work were fire in a room, loss of confinement from a process tank, and loss of confinement coupled with fire event. Based on these accident scenarios in a large and unventilated process room, the modeling calculations of the hydrogen migration were performed to estimate local transient concentrations of hydrogen due to the sudden leakage and release from a glovebox system associated with the process tank. The modeling domain represented the major features of the process room including the principal release or leakage source of gas storage system. The model was benchmarked against the literature results for key phenomena such as natural convection, turbulent behavior, gas mixing due to jet entrainment, and radiation cooling because these phenomena are closely related to the gas driving mechanisms within a large air space of the process room. The modeling results showed that at the corner of the process room, the gas concentrations migrated by the Case 2 and Case 3 scenarios reached the set-point value of high activity alarm in about 13 seconds, while the Case 1 scenario takes about 90 seconds to reach the concentration. The modeling results were used to estimate transient radioactive gas migrations in an enclosed process room installed with high activity alarm monitor when the postulated leakage scenarios are initiated without room ventilation.

Lee, S

2008-01-11T23:59:59.000Z

429

Carbon War Room | Open Energy Information  

Open Energy Info (EERE)

War Room War Room Jump to: navigation, search Name Carbon War Room Place Washington, DC Number of employees 1-10 Website http://www.carbonwarroom.com/ Coordinates 38.8951118°, -77.0363658° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.8951118,"lon":-77.0363658,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

430

Method of remotely constructing a room  

DOE Patents (OSTI)

The testing of nuclear devices of high explosive yield has required that cavities of relatively large size be provided at considerable distances below the surface of the earth for the pre-detonation emplacement of the device. The construction of an essentially watertight chamber or room in the cavity is generally required for the actual emplacement of the device. A method is described of constructing such a room deep within the earth by personnel at the surface. A dual wall bladder of a watertight, pliable fabric material is lowered down a shaft into a selected position. The bladder is filled with a concrete grout while a heavy fluid having essentially the same density as the grout is maintained on both sides of the bladder, to facilitate complete deployment of the bladder by the grout to form a room of desired configuration. (10 claims)

Michie, J.D.; De Hart, R.C.

1971-10-05T23:59:59.000Z

431

A New Control Room for SLAC Accelerators  

SciTech Connect

We are planning to construct a new control room at SLAC to unify and improve the operation of the LCLS, SPEAR3, and FACET accelerator facilities, and to provide the space and flexibility needed to support the LCLS-II and proposed new test beam facilities. The existing control rooms for the linac and SPEAR3 have been upgraded in various ways over the last decade, but their basic features have remained unchanged. We propose to build a larger modern Accelerator Control Room (ACR) in the new Research Support Building (RSB) which is currently under construction at SLAC. Shifting the center of control for the accelerator facilities entails both technical and administrative challenges. In this paper, we describe the history, concept, and status of this project.

Erickson, Roger; Guerra, E.; Stanek, M.; Hoover, Z.Van; Warren, J.; /SLAC

2012-06-04T23:59:59.000Z

432

FINAL PROJECT REPORT LOAD MODELING TRANSMISSION RESEARCH  

E-Print Network (OSTI)

StalledAirConditionerCompressors,IEEETransactionsonStalled AirConditionerCompressors,IEEETransactionsonsuggested thatthecompressortorquemaynotbeconstant.

Lesieutre, Bernard

2013-01-01T23:59:59.000Z

433

Federal Energy Management Program: Covered Product Category:...  

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

Residential Central Air Conditioners to someone by E-mail Share Federal Energy Management Program: Covered Product Category: Residential Central Air Conditioners on Facebook Tweet...

434

Federal Energy Management Program: Energy Cost Calculator for...  

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

Commercial Unitary Air Conditioner (Rooftops) to someone by E-mail Share Federal Energy Management Program: Energy Cost Calculator for Commercial Unitary Air Conditioner (Rooftops)...

435

Life-Cycle Cost and Payback Period Analysis for Commercial Unitary...  

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

and Payback Period Analysis for Commercial Unitary Air Conditioners Title Life-Cycle Cost and Payback Period Analysis for Commercial Unitary Air Conditioners Publication Type...

436

ComEd, Nicor Gas, Peoples Gas & North Shore Gas - Bonus Rebate...  

Open Energy Info (EERE)

Rebates Central Air Conditioner Unit 14 SEER or above: 350 Central Air Conditioner Unit Energy Star rated: 500 Nicor Gas, Peoples Gas & North Shore Gas Furnace: 200 - 500...

437

--No Title--  

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

water cooled air conditioner for the purpose of cooling analytical equipment and computers. Water Cooled Air Conditioner, D-1169 Savannah River Site Aiken South Carolina...

438

This  

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

A: Handling of federal A: Handling of federal and selected state legislation and regulation in the AEO This page inTenTionally lefT blank 187 U.S. Energy Information Administration | Assumptions to the Annual Energy Outlook 2013 Appendix A: Handling of federal and selected state legislation and regulation in the AEO Legislation Brief description AEO handling Basis Residential sector A. National Appliance Energy Conservation Act of 1987 Requires Secretary of Energy to set minimum efficiency standards for 10 appliance categories with periodic updates Included for categories represented in the AEO residential sector forecast. Public Law 100-12. a. Room air conditioners Sets standards for room air conditioners in 2014. Require new purchases of room air conditioners to meet the standard.

439

Appendix A: Handling of Federal  

Gasoline and Diesel Fuel Update (EIA)

and selected State legislation and regulation in the AEO This page inTenTionally lefT blank 177 U.S. Energy Information Administration | Assumptions to the Annual Energy Outlook 2012 Appendix A: Handling of Federal and selected State legislation and regulation in the AEO Legislation Brief description AEO handling Basis Residential sector A. National Appliance Energy Conservation Act of 1987 Requires Secretary of Energy to set minimum efficiency standards for 10 appliance categories with periodic updates Included for categories represented in the AEO residential sector forecast. Public Law 100-12. a. Room air conditioners Sets standards for room air conditioners in 2014. Require new purchases of room air conditioners to meet the standard. Federal Register Notice

440

Evaluation of Indoor Air Quality Parameters and Airborne Fungal Spore Concentrations by Season and Type of HVAC System in a School Building.  

E-Print Network (OSTI)

??An indoor air quality survey has been conducted in a school building. Samples were collected inone room in each wing and each level on a (more)

McLeod, Jeffrey D.

2008-01-01T23:59:59.000Z

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


441

Operating Room Pooling and Parallel Surgery Processing Under Uncertainty  

Science Conference Proceedings (OSTI)

Operating room (OR) scheduling is an important operational problem for most hospitals. In this study, we present a novel two-stage stochastic mixed-integer programming model to minimize total expected operating cost given that scheduling decisions are ... Keywords: multiple operating rooms, operating room pooling, operating room scheduling, parallel surgery processing, two-stage stochastic mixed-integer programs

Sakine Batun; Brian T. Denton; Todd R. Huschka; Andrew J. Schaefer

2011-04-01T23:59:59.000Z

442

Texas Union Pizza Order Form ROOM RESERVED ______________________________________________________  

E-Print Network (OSTI)

#12;#12;Texas Union Pizza Order Form ROOM RESERVED: ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ Pick-up All orders are to be picked up at the Texas Union Hospitality Center desk in the south end West with the Texas Union Policies and Procedures. I understand that I will be held responsible for any debts incurred

Texas at Austin, University of

443

Advanced nuclear plant control room complex  

DOE Patents (OSTI)

An advanced control room complex for a nuclear power plant, including a discrete indicator and alarm system (72) which is nuclear qualified for rapid response to changes in plant parameters and a component control system (64) which together provide a discrete monitoring and control capability at a panel (14-22, 26, 28) in the control room (10). A separate data processing system (70), which need not be nuclear qualified, provides integrated and overview information to the control room and to each panel, through CRTs (84) and a large, overhead integrated process status overview board (24). The discrete indicator and alarm system (72) and the data processing system (70) receive inputs from common plant sensors and validate the sensor outputs to arrive at a representative value of the parameter for use by the operator during both normal and accident conditions, thereby avoiding the need for him to assimilate data from each sensor individually. The integrated process status board (24) is at the apex of an information hierarchy that extends through four levels and provides access at each panel to the full display hierarchy. The control room panels are preferably of a modular construction, permitting the definition of inputs and outputs, the man machine interface, and the plant specific algorithms, to proceed in parallel with the fabrication of the panels, the installation of the equipment and the generic testing thereof.

Scarola, Kenneth (Windsor, CT); Jamison, David S. (Windsor, CT); Manazir, Richard M. (North Canton, CT); Rescorl, Robert L. (Vernon, CT); Harmon, Daryl L. (Enfield, CT)

1993-01-01T23:59:59.000Z

444

Thermostat response and room temperature control  

Science Conference Proceedings (OSTI)

This article examines the impact to thermal comfort of the operation of the room thermostat. The topics of the article include types of thermostat response, reset response, proportional response, digital systems, system response, verification of building temperatures, thermal comfort analysis, and productivity costs of implementing mandated setpoints.

Int-Hout, D. (Carrier Corp., Syracuse, NY (United States))

1994-01-01T23:59:59.000Z

445

Building America Top Innovations Hall of Fame Profile … Outside Air Ventilation Controller  

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

partner Davis Energy partner Davis Energy Group worked with Monley Cronin Construction to build 100 energy-efficient homes in Woodland, CA, with night- cooling ventilation systems. BUILDING AMERICA TOP INNOVATIONS HALL OF FAME PROFILE INNOVATIONS CATEGORY: 1. Advanced Technologies and Practices 1.3 Assured Health, Safety, and Durability Outside Air Ventilation Controller Building America researchers developed technologies to harness the natural day-night temperature swings in the U.S. Southwest to cut cooling energy peak demand with no compromise in comfort. Building America research has shown that, in dry climates, the use of ventilation cooling can significantly reduce, delay, or completely eliminate air conditioner operation resulting in both energy savings and reduction of peak demand

446

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

SciTech Connect

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

None

2010-09-01T23:59:59.000Z

447

Consumer life-cycle cost impacts of energy-efficiency standards for residential-type central air conditioners and heat pumps  

E-Print Network (OSTI)

was used to forecast electricity prices into the future (Case forecasts residential electricity prices to decline to

Rosenquist, Gregory; Chan, Peter; Lekov, Alex; McMahon, James; Van Buskirk, Robert

2001-01-01T23:59:59.000Z

448

Air Resources: Prevention and Control of Air Contamination and Air  

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

Air Resources: Prevention and Control of Air Contamination and Air Air Resources: Prevention and Control of Air Contamination and Air Pollution, Air Quality Classifications and Standards, and Air Quality Area Classifications (New York) Air Resources: Prevention and Control of Air Contamination and Air Pollution, Air Quality Classifications and Standards, and Air Quality Area Classifications (New York) < Back Eligibility Agricultural Fuel Distributor Industrial Institutional Investor-Owned Utility Local Government Multi-Family Residential Municipal/Public Utility Nonprofit Rural Electric Cooperative Schools State/Provincial Govt Transportation Tribal Government Utility Program Info State New York Program Type Environmental Regulations Provider NY Department of Environmental Conservation These regulations establish emissions limits and permitting and operational

449

Energy utilization reduction devices  

SciTech Connect

An energy conservation arrangement for a hotel guest room or other room lockable by a key comprises a key reception module disposed inside the room to receive a tag of the key when the guest enters the room. Control means is responsive to the tag being received by the key reception module to enable the use of room light(s) and electrical power outlet(s) and to allow a room air conditioner to function normally. When the guest removes the tag from the key reception module prior to leaving the room, the control means disables use of the light(s) and power outlet(s) and puts the air conditioner into a minimum power consumption mode.

Bar, O.

1982-03-16T23:59:59.000Z

450

EA-0819: Final Environmental Assessment | Department of Energy  

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

819: Final Environmental Assessment 819: Final Environmental Assessment EA-0819: Final Environmental Assessment Proposed Energy Conservation Standards for Eight Types of Consumer Products: Room Air Conditioners, Water Heaters, Direct Heating Equipment, Mobile Home Furnaces, Ranges and Ovens, Pool Heaters, Fluorescent Ballasts, and Television Sets This Environmental Assessment (EA) on the candidate energy conservation standards for eight appliances (room air conditioners, water heaters, direct heating equipment, mobile home furnaces, kitchen ranges and ovens, pool heaters, fluorescent lamp ballasts, and television sets) was prepared pursuant to the National Environmental Policy Act of 1969 (NEPA), regulations of the Council on Environmental Quality, Title 40, Code of Federal Regulations, Parts 1500 through 1508. The candidate conservation

451

Priority coding for control room alarms  

SciTech Connect

Indicating the priority of a spatially fixed, activated alarm tile on an alarm tile array by a shape coding at the tile, and preferably using the same shape coding wherever the same alarm condition is indicated elsewhere in the control room. The status of an alarm tile can change automatically or by operator acknowledgement, but tones and/or flashing cues continue to provide status information to the operator.

Scarola, Kenneth (Windsor, CT); Jamison, David S. (Windsor, CT); Manazir, Richard M. (North Canton, CT); Rescorl, Robert L. (Vernon, CT); Harmon, Daryl L. (Enfield, CT)

1994-01-01T23:59:59.000Z

452

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

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

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

453

Release of DRAFT RFP Headquarters Reading Room Instructions/Guidelines  

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

Release of DRAFT RFP Release of DRAFT RFP Headquarters Reading Room Instructions/Guidelines 1. Reading Room Points of Contact: 7/21 - 8/8, Mike Baehre, (202) 586-6575 8/9 - Close of Draft RFP, John Bernier, (202) 586-6416 Reading Room Availability: By Appointment - Reading Room will be available until DRAFT RFP Closes. Reading Room Hours: Morning, 9:00 a.m. - 11:30 a.m.; and Afternoon 1:00 p.m. - 3:30 p.m. Reading Room Will Accommodate: Up to 5-6 people 2. All personnel must: a. Sign-in b. Identify their Company or Firm they work for or are affiliated c. Indicate if they have a "Q" clearance 3. Personnel must stay in the Reading Room to view documents. The "A" corridor is inside a classified area and all visitors to the Reading Room must be escorted at all times.

454

Sorption of organic gases in a furnished room  

SciTech Connect

We present experimental data and semi-empirical models describing the sorption of organic gases in a simulated indoor residential environment. Two replicate experiments were conducted with 20 volatile organic compounds (VOCs) in a 50-m{sup 3} room finished with painted wallboard, carpet and cushion, draperies and furnishings. The VOCs span a wide volatility range and include ten Hazardous Air Pollutants. VOCs were introduced to the static chamber as a pulse and their gas-phase concentrations were measured during a net adsorption period and a subsequent net desorption period. Three sorption models were fit to the measured concentrations for each compound to determine the simplest formulation needed to adequately describe the observed behavior. Sorption parameter values were determined by fitting the models to adsorption period data then checked by comparing measured and predicted behavior during desorption. The adequacy of each model was evaluated using a goodness of fit parameter calculated for each period. Results indicate that sorption usually does not greatly affect indoor concentrations of methyl-tert-butyl ether, 2-butanone, isoprene and benzene. In contrast, sorption appears to be a relevant indoor process for many of the VOCs studied, including C{sub 8}-C{sub 10} aromatic hydrocarbons (HC), terpenes, and pyridine. These compounds sorbed at rates close to typical residential air change rates and exhibited substantial sorptive partitioning at equilibrium. Polycyclic aromatic HCs, aromatic alcohols, ethenylpyridine and nicotine initially adsorbed to surfaces at rates of 1.5 to >6 h{sup -1} and partitioned 95 to >99% in the sorbed phase at equilibrium.

Singer, Brett C.; Revzan, Kenneth L.; Hotchi, Toshifumi; Hodgson, Alfred T.; Brown, Nancy J.

2003-11-30T23:59:59.000Z

455

Innovative Systems for Solar Air Conditioning of Buildings  

E-Print Network (OSTI)

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

Kessling, W.; Peltzer, M.

2004-01-01T23:59:59.000Z

456

Pre-validation of nuclear power plant control room design  

Science Conference Proceedings (OSTI)

Evaluation of the design of complex automation and control room systems is an essential phase in the design process in the nuclear field. For example, in order to meet the nuclear regulatory requirements, the new control room systems have to be evaluated ... Keywords: concept of operations, control room, pre-validation, verification & validation

Jari Laarni; Paula Savioja; Hannu Karvonen; Leena Norros

2011-07-01T23:59:59.000Z

457

Air Pollution (Illinois)  

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

This article states regulations for monitoring air pollution, methods for permit applications, emission limitations for pollutants and air quality standards.

458

Anoka Municipal Utility - Residential Energy Efficiency Rebate Program |  

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

Anoka Municipal Utility - Residential Energy Efficiency Rebate Anoka Municipal Utility - Residential Energy Efficiency Rebate Program Anoka Municipal Utility - Residential Energy Efficiency Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Commercial Lighting Lighting Maximum Rebate Room Air Conditioner: limit of 2 units per account Lighting: limit of $15 per customer per year Program Info Expiration Date 03/31/2013 State Minnesota Program Type Utility Rebate Program Rebate Amount Ceiling Fan: $25 Clothes Washer: $25 Refrigerator: $50 Freezer: $50 Refrigerator/Freezer Recycling: $25 Freezer: $50 Dishwasher: $25 Dehumidifier: $25 Air Conditioner Tune-Up: $25 Room Air Conditioner: $25/unit Central A/C: $225 - $400, varies by efficiency

459

Memorandum To: GENERAL COUNSEL, DEPARTMENT OF ENERGY (DOE) From: JONATHAN MELCHI, HEATING, AIR-CONDITIONING AND REFRIGERATION  

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

To: GENERAL COUNSEL, DEPARTMENT OF ENERGY (DOE) To: GENERAL COUNSEL, DEPARTMENT OF ENERGY (DOE) From: JONATHAN MELCHI, HEATING, AIR-CONDITIONING AND REFRIGERATION DISTRIBUTORS INTERNATIONAL (HARDI) Date: 1/12/2012 Subject: EX PARTE COMMUNICATION MEMO DOE ATTENDEES: Ashley Armstrong, John Cymbalsky, David Case, Laura Barhydt HARDI ATTENDEES: Talbot Gee, Jonathan Melchi AREAS OF DISCUSSION: DOE Framework Document and Stakeholder Meeting regarding the Enforcement of the updated Energy Conservation Standards for Air Conditioners, Furnaces and Heat Pumps. The meeting took place on Thursday January 5 th , 2012 from 2pm to 3-pm. The following topics were discussed. 1.) Sell-Through. HARDI asked for clarification on the DOE's notation on the Framework Document

460

Pressure Regain Strategies for Existing Air Distribution Systems  

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

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

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


461

Progress Energy Carolinas - Residential Energy Efficiency Rebate Program |  

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

Progress Energy Carolinas - Residential Energy Efficiency Rebate Progress Energy Carolinas - Residential Energy Efficiency Rebate Program Progress Energy Carolinas - Residential Energy Efficiency Rebate Program < Back Eligibility Residential Savings Category Home Weatherization Commercial Weatherization Heating & Cooling Commercial Heating & Cooling Cooling Sealing Your Home Ventilation Heat Pumps Appliances & Electronics Commercial Lighting Lighting Water Heating Windows, Doors, & Skylights Program Info State North Carolina Program Type Utility Rebate Program Rebate Amount Duct sealing and replacement: 50% of cost, up to $190 Air sealing and upgrading insulation: $0.375/Sq Ft, up to $500 Heat Pump Water Heater: $350 HVAC Audit: $100 Central Air Conditioner/Heat Pump: $300 Geothermal Replacement: $300 Room Air Conditioners: $25

462

Promoting emerging energy-efficiency technologies and practices by utilities in a restructured energy industry: A report from California  

E-Print Network (OSTI)

condenser cooling Optimized air conditioners Indirect/direct evaporative coolers Daylighting tools and controls Commercial

Vine, Edward L.

2000-01-01T23:59:59.000Z

463

NETL: NewsRoom - LabNotes  

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

LabNotes LabNotes NewsRoom LabNotes January 2014 Chemical Looping 101: The Basics NETL's Chemical Looping Research Facilities Oxygen Carriers in Chemical Looping Combustion Chemical Looping Modeling and Simulation Research at NETL December 2013 Foamed Cement Can Seal Tricky Oil and Gas Wells November 2013 High-Performance Rechargeable Batteries May Help Keep the Lights On Rocks Demystified in Geomechanical Properties Lab October 2013 NETL's Morgantown Supercomputer Sets a High Bar for Energy Efficiency September 2013 NETL's Energy Data Exchange (EDX): Providing Access to Quality Energy Data Sorbents Capturing CO2 Will Make Power Plants Cleaner August 2013 Collaborative Technology Demonstrates Potential in Diabetes Testing Quantifying Uncertainty in Computer Model Predictions

464

Absorber Materials at Room and Cryogenic Temperatures  

Science Conference Proceedings (OSTI)

We recently reported on investigations of RF absorber materials at cryogenic temperatures conducted at Jefferson Laboratory (JLab). The work was initiated to find a replacement material for the 2 Kelvin low power waveguide Higher Order Mode (HOM) absorbers employed within the original cavity cryomodules of the Continuous Electron Beam Accelerator Facility (CEBAF). This effort eventually led to suitable candidates as reported in this paper. Furthermore, though constrained by small funds for labor and resources, we have analyzed a variety of lossy ceramic materials, several of which could be usable as HOM absorbers for both normal conducting and superconducting RF structures, e.g. as loads in cavity waveguides and beam tubes either at room or cryogenic temperatures and, depending on cooling measures, low to high operational power levels.

F. Marhauser, T.S. Elliott, A.T. Wu, E.P. Chojnacki, E. Savrun

2011-09-01T23:59:59.000Z

465

Prediction of Air Mixing From High Sidewall Diffusers in Cooling Mode: Preprint  

Science Conference Proceedings (OSTI)

Computational fluid dynamics modeling was used to evaluate the performance of high sidewall air supply in cooling mode. The research focused on the design, placement, and operation of air supply diffusers located high on a sidewall and return grilles located near the floor on the same sidewall. Parameters of the study are the supply velocity, supply temperature, diffuser dimensions and room dimensions. Thermal loads characteristic of high performance homes were applied at the walls and room temperature was controlled via a thermostat. The results are intended to provide information to guide the selection of high sidewall supply diffusers to provide proper room mixing for cooling of high performance homes.

Ridouane, E. H.; Gawlik, K.

2011-02-01T23:59:59.000Z

466

Air Leakage of Furnaces and Air Handlers  

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

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

467

Analysis of Potential Energy Saving and CO2 Emission Reduction of Home Appliances and Commercial Equipments in China  

E-Print Network (OSTI)

CL COMMERCIAL REFRIGERATION STANDBY External power suppliesTV, refrigerator, fans, standby, air conditioner, electricConditioner Diff 3.59E-04 The standby power consumption of

Zhou, Nan

2011-01-01T23:59:59.000Z

468

Metal-Air Batteries  

Science Conference Proceedings (OSTI)

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.

Zhang, Jiguang; Bruce, Peter G.; Zhang, Gregory

2011-08-01T23:59:59.000Z

469

Electrorecovery of actinides at room temperature  

Science Conference Proceedings (OSTI)

There are a large number of purification and processing operations involving actinide species that rely on high-temperature molten salts as the solvent medium. One such application is the electrorefining of impure actinide metals to provide high purity material for subsequent applications. There are some drawbacks to the electrodeposition of actinides in molten salts including relatively low yields, lack of accurate potential control, maintaining efficiency in a highly corrosive environment, and failed runs. With these issues in mind we have been investigating the electrodeposition of actinide metals, mainly uranium, from room temperature ionic liquids (RTILs) and relatively high-boiling organic solvents. The RTILs we have focused on are comprised of 1,3-dialkylimidazolium or quaternary ammonium cations and mainly the {sup -}N(SO{sub 2}CF{sub 3}){sub 2} anion [bis(trif1uoromethylsulfonyl)imide {equivalent_to} {sup -}NTf{sub 2}]. These materials represent a class of solvents that possess great potential for use in applications employing electrochemical procedures. In order to ascertain the feasibility of using RTILs for bulk electrodeposition of actinide metals our research team has been exploring the electron transfer behavior of simple coordination complexes of uranium dissolved in the RTIL solutions. More recently we have begun some fundamental electrochemical studies on the behavior of uranium and plutonium complexes in the organic solvents N-methylpyrrolidone (NMP) and dimethylsulfoxide (DMSO). Our most recent results concerning electrodeposition will be presented in this account. The electrochemical behavior of U(IV) and U(III) species in RTILs and the relatively low vapor pressure solvents NMP and DMSO is described. These studies have been ongoing in our laboratory to uncover conditions that will lead to the successful bulk electrodeposition of actinide metals at a working electrode surface at room temperature or slightly elevated temperatures. The RTILs we have focused on thus far are based on 1,3-dialkylimidazolium or quaternary ammonium cations and {sup -}N(SO{sub 2}CF{sub 3}){sub 2} anions. Our results from XPS studies of e1ectrooxidized uranium metal surfaces indicate that uranium metal reacts with the anion from the RTIL, most likely through an initial f1uoride abstraction, forming decomposition products that inhibit the bulk electrodeposition of uranium metal. Similar results were found when the organic solvents were used with TBA[B(C{sub 6}F{sub 5}){sub 4}] as the supporting electrolyte, although the voltammetric data of uranium ions in these solutions is more encouraging in relation to electrodeposition of uranium metal. Preliminary results on the voltammetric behavior and bulk electrodeposition of plutonium species are also presented.

Stoll, Michael E [Los Alamos National Laboratory; Oldham, Warren J [Los Alamos National Laboratory; Costa, David A [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

470

A holistic investigation of complexity sources in nuclear power plant control rooms  

E-Print Network (OSTI)

The nuclear power community in the United States is moving to modernize aging power plant control rooms as well as develop control rooms for new reactors. New generation control rooms, along with modernized control rooms, ...

Sasangohar, Farzan

2011-01-01T23:59:59.000Z

471

Feasibility of air capture  

E-Print Network (OSTI)

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 ...

Ranjan, Manya

2010-01-01T23:59:59.000Z

472

Carbon promoted water electrolysis to produce hydrogen at room temperature.  

E-Print Network (OSTI)

??The objective of the work was to conduct water electrolysis at room temperature with reduced energy costs for hydrogen production. The electrochemical gasification of carbons (more)

Ranganathan, Sukanya.

2007-01-01T23:59:59.000Z

473

Building Energy Software Tools Directory: Cold Room Calc  

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

skills helpful but not required. Users More than 200 around the world. Audience Cold room design engineers, refrigeration equipment suppliers and contractors, owners of...

474

Evaluation of Air Mixing and Thermal Comfort From High Sidewall Supply Air Jets  

SciTech Connect

Uniform mixing of conditioned air with room air is an essential factor for providing comfort in homes. The higher the supply flow rates the easier to reach good mixing in the space. In high performance homes, however, the flow rates required to meet the small remaining thermal loads are not large enough to maintain uniform mixing in the space. The objective of this study is to resolve this issue and maintain uniform temperatures within future homes. We used computational fluid dynamics modeling to evaluate the performance of high sidewall air supply for residential applications in heating and cooling modes. Parameters of the study are the supply velocity, supply temperature, diffuser dimensions, and room dimensions. Laboratory experiments supported the study of thermal mixing in heating mode; we used the results to develop a correlation to predict high sidewall diffuser performance. For cooling mode, numerical analysis is presented. The results provide information to guide the selection of high sidewall supply diffusers to maintain proper room mixing for heating and cooling of high performance homes. It is proven that these systems can achieve good mixing and provide acceptable comfort levels. Recommendations are given on the operating conditions to guarantee occupant comfort.

Ridouane, E. H.

2011-09-01T23:59:59.000Z

475

Improving Data Center Efficiency with Rack or Row Cooling Devices  

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

Challenging conventional Challenging conventional cooling systems Rack/row-mounted cooling devices can replace or supplement conventional cooling systems and result in energy savings. Conventional data center cool- ing is achieved with computer room air conditioners (CRACs) or computer room air handlers (CRAHs). These CRAC and CRAH units are typically installed in data centers on top of raised-floors that are used for cooling air distribution. Such under-floor air distribution is not required by the new rack/row-mounted devices. Consequently, the vagaries of under-floor airflow pathways for room conditioning are avoided. Importantly, close-coupled devices may be better

476

Improving Data Center Efficiency with Rack or Row Cooling Devices  

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

Challenging conventional Challenging conventional cooling systems Rack/row-mounted cooling devices can replace or supplement conventional cooling systems and result in energy savings. Conventional data center cool- ing is achieved with computer room air conditioners (CRACs) or computer room air handlers (CRAHs). These CRAC and CRAH units are typically installed in data centers on top of raised-floors that are used for cooling air distribution. Such under-floor air distribution is not required by the new rack/row-mounted devices. Consequently, the vagaries of under-floor airflow pathways for room conditioning are avoided. Importantly, close-coupled devices may be better

477

up to air  

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

to room temperature, Turn blower heaters off Open and lock the breaker to the heat system Close GN2 purge valve Diconnect and plug GN2...

478

Effects of room furnishings and air speed on particle deposition rates indoors  

E-Print Network (OSTI)

^ of the National Nuclear Security Administration under U.S.of the National Nuclear Security Administration under U.S.

Thatcher, Tracy L.; Lai, Alvin C.K.; Moreno-Jackson, Rosa; Sextro, Richard G.; Nazaroff, William W.

2002-01-01T23:59:59.000Z