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


1

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

2

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...

3

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...

4

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...

5

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

6

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

7

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.

8

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.

9

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.

10

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.

11

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

12

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"

13

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"

14

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...

15

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...

16

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

17

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...

18

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

19

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

20

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.

Note: This page contains sample records for the topic "air conditioner minimum" 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

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

22

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.

23

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

24

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

25

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

26

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...

27

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...

28

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

29

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

30

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

31

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

32

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 ...

33

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

34

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

35

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

36

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

37

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

38

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

39

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

40

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

Note: This page contains sample records for the topic "air conditioner minimum" 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

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

42

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

43

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.

44

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

45

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

46

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

47

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}

48

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.

49

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.

50

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.

51

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

52

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

53

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

54

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.

55

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

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

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

58

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

59

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...

60

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...

Note: This page contains sample records for the topic "air conditioner minimum" 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

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

62

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

63

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

64

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

65

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

66

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...

67

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

68

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

69

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

70

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

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

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

73

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

74

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

75

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

76

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

77

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

78

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

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

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

Note: This page contains sample records for the topic "air conditioner minimum" 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

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

82

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

83

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

84

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

85

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

86

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

87

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

88

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

89

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

90

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

91

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

92

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

93

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...

94

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

95

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.

96

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,

97

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,

98

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

99

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

100

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

Note: This page contains sample records for the topic "air conditioner minimum" 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

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

102

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

103

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

104

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

105

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

106

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

107

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

108

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

109

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

110

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

111

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

112

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

113

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

114

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

115

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

116

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

117

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.

118

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

119

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

120

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

Note: This page contains sample records for the topic "air conditioner minimum" 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

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

122

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"

123

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

124

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

125

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

126

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

127

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

128

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

129

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

130

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

131

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

132

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

133

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

134

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

135

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

136

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

137

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

138

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

139

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

140

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

Note: This page contains sample records for the topic "air conditioner minimum" 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

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

142

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

143

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

144

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

145

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

146

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

147

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

148

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

149

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

150

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

151

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

152

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

153

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

154

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

155

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

156

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

157

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

158

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

159

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.

160

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

Note: This page contains sample records for the topic "air conditioner minimum" 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

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

162

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

163

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

164

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

165

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...

166

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

167

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.

168

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

169

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

170

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

171

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

172

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...

173

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

174

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...

175

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...

176

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

177

Spatial Interpolation of Daily Maximum and Minimum Air Temperature Based on Meteorological Model Analyses and Independent Observations  

Science Conference Proceedings (OSTI)

Hourly meteorological forecast model initializations are used to guide the spatial interpolation of daily cooperative network station data in the northeastern United States. The hourly model data are transformed to daily maximum and minimum ...

Arthur T. DeGaetano; Brian N. Belcher

2007-11-01T23:59:59.000Z

178

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...

179

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.

180

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

Note: This page contains sample records for the topic "air conditioner minimum" 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

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.

182

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

183

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

184

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

185

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,

186

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%.

187

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

188

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.

189

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

190

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...

191

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

192

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

193

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

194

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

195

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...

196

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

197

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...

198

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.

199

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

200

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

Note: This page contains sample records for the topic "air conditioner minimum" 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

A Comparison among Strategies for Interpolating Maximum and Minimum Daily Air Temperatures. Part I: The Selection of Guiding Topographic and Land Cover Variables  

Science Conference Proceedings (OSTI)

This paper explores the derivation and selection of a comprehensive set of continuous topographic and land coverrelated variables to guide the interpolation of daily maximum and minimum temperatures over England and Wales, for an entire annual ...

Claire H. Jarvis; Neil Stuart

2001-06-01T23:59:59.000Z

202

A Comparison among Strategies for Interpolating Maximum and Minimum Daily Air Temperatures. Part II: The Interaction between Number of Guiding Variables and the Type of Interpolation Method  

Science Conference Proceedings (OSTI)

In a comparative experiment, the sequence of daily maximum and minimum temperatures for 1976 was interpolated over England and Wales to a resolution of 1 km using partial thin plate splines, ordinary kriging, trend surface, and an automatic ...

Claire H. Jarvis; Neil Stuart

2001-06-01T23:59:59.000Z

203

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

204

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

205

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

206

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

207

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

208

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

209

Minimum Changeover Cost Arborescence  

E-Print Network (OSTI)

having minimum changeover cost, a cost that we now describe. ... We define the changeover cost at j, denoted by d(j), as the sum of the costs at j paid for each of ...

210

Minimum Magnetic Energy Theorem  

E-Print Network (OSTI)

The Thomson's Theorem states that static charge distributions in conductors show up at the conducting surfaces in an equipotential configuration, so that the electrostatic energy is a minimum. In this work we study an analogue statement for magnetic systems: in a given set of conductors, the stored magnetic field energy reaches the minimum value for superficial current distributions so that the magnetic vector potential is tangent to the conductors surfaces. This is the counterpart of Thomson's theorem for the magnetic field.

Fiolhais, M C N

2008-01-01T23:59:59.000Z

211

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

212

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

213

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,

214

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,

215

The Minimum Price Contract  

E-Print Network (OSTI)

A minimum price contract is one of many tools a marketer may use to better manage price and production risk while trying to achieve financial goals and objectives. This publication discusses the advantages and disadvantages involved in this marketing program and the situations when it can be used.

Waller, Mark L.; Amosson, Stephen H.; Welch, Mark; Dhuyvetter, Kevin C.

2008-10-17T23:59:59.000Z

216

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.

217

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.

218

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.

219

Theoretical Minimum Energy Use of a Building HVAC System  

E-Print Network (OSTI)

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

Tanskyi, O.

2011-01-01T23:59:59.000Z

220

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

Note: This page contains sample records for the topic "air conditioner minimum" 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

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

222

Minimum Cost Arborescences ?  

E-Print Network (OSTI)

In this paper, we analyze the cost allocation problem when a group of agents or nodes have to be connected to a source, and where the cost matrix describing the cost of connecting each pair of agents is not necessarily symmetric, thus extending the well-studied problem of minimum cost spanning tree games, where the costs are assumed to be symmetric. The focus is on rules which satisfy axioms representing incentive and fairness properties. We show that while some results are similar, there are also significant differences between the frameworks corresponding to symmetric and asymmetric cost matrices.

Bhaskar Dutta; Debasis Mishra; We Thank Daniel Granot; Anirban Kar; Herve Moulin For Comments

2011-01-01T23:59:59.000Z

223

Consumer Life-Cycle Cost Impacts of Energy-Efficiency Standards...  

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

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...

224

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

225

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

226

Minimum Description Length Model Selection  

E-Print Network (OSTI)

Minimum Description Length Model Selection Problems and Extensions Steven de Rooij #12;#12;Minimum Description Length Model Selection Problems and Extensions #12;ILLC Dissertation Series DS-2008-07 For further-mail: illc@science.uva.nl homepage: http://www.illc.uva.nl/ #12;Minimum Description Length Model Selection

227

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

228

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

229

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

230

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

231

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

232

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

233

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

234

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

235

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

236

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

237

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

238

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

239

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

240

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

Note: This page contains sample records for the topic "air conditioner minimum" 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

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

242

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

243

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

244

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

245

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

246

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

247

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

248

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

249

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

250

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

251

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

252

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

253

Oklahoma Municipal Power Authority - WISE Energy Efficiency Rebate...  

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

OMPA for other information on this program. Air Conditioners: minimum Energy Star SEER rating plus 2 Air-Source Heat Pumps: meet minimum Energy Star SEER rating plus 1...

254

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

255

Quantum games and minimum entropy  

Science Conference Proceedings (OSTI)

This paper analyze Nash's equilibrium (maximum utility MU) and its relations with the order state(minimum entropy ME). I introduce the concept of minimum entropy as a paradigm of both Nash-Hayek's equilibrium. The ME concept is related to Quantum Games. ...

Edward Jimnez

2003-05-01T23:59:59.000Z

256

MINIMUM SECURITY REQUIREMENTS FOR FEDERAL  

E-Print Network (OSTI)

March 2006 MINIMUM SECURITY REQUIREMENTS FOR FEDERAL INFORMATION AND INFORMATION SYSTEMS: FEDERAL INFORMATION PROCESSING STANDARD (FIPS) 200 APPROVED BY THE SECRETARY OF COMMERCE MINIMUM SECURITY REQUIREMENTS BY THE SECRETARY OF COMMERCE Shirley Radack, EditorShirley Radack, Editor Computer Security Division

257

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

258

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.

259

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

260

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.

Note: This page contains sample records for the topic "air conditioner minimum" 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

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

262

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

263

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

264

Minimum Gas Service Standards (Ohio)  

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

Natural gas companies in Ohio are required to follow the Minimum Gas Service Standards, which are set and enforced by the Public Utilities Commission of Ohio. These rules are found in chapter 4901...

265

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

266

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

267

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

268

Credible Research Designs for Minimum Wage Studies  

E-Print Network (OSTI)

Credible Research Designs for Minimum Wage Studies SylviaWe assess alternative research designs for minimum wageAllegretto: Institute for Research on Labor and Employment,

Allegretto, Sylvia; Dube, Arindrajit; Reich, Michael; Zipperer, Ben

2013-01-01T23:59:59.000Z

269

Federal Energy Management Program: Minimum Efficiency Standards...  

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

Minimum Efficiency Standards for Electric Motors Section 313 of the Energy Independence and Security Act (EISA) of 2007 raised Federal minimum efficiency standards for...

270

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

271

Recent Trends of Minimum and Maximum Surface Temperatures over Eastern Africa  

Science Conference Proceedings (OSTI)

This study investigated recent trends in the mean surface minimum and maximum air temperatures over eastern Africa by use of both graphical and statistical techniques. Daily records for 71 stations for the period 193992 were used.

S. M. Kinguyu; L. A. Ogallo; E. K. Anyamba

2000-08-01T23:59:59.000Z

272

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

273

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

274

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

275

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

276

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

277

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

278

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

279

Air Pollution Control Regulations: No. 22 - Air Toxics (Rhode Island) |  

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

Air Pollution Control Regulations: No. 22 - Air Toxics (Rhode Air Pollution Control Regulations: No. 22 - Air Toxics (Rhode Island) Air Pollution Control Regulations: No. 22 - Air Toxics (Rhode Island) < Back Eligibility Commercial Industrial Investor-Owned Utility Municipal/Public Utility Rural Electric Cooperative Utility Program Info State Rhode Island Program Type Siting and Permitting Provider Department of Environmental Management Permits are required to construct, install, or modify any stationary source which has the potential to increase emissions of a listed toxic air contaminant by an amount greater than the minimum quantity for that contaminant. Minimum quantities are specified in Table III of these regulations. Permits will be granted based in part on the impact of the projected emissions of the stationary source on acceptable ambient levels

280

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

Note: This page contains sample records for the topic "air conditioner minimum" 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

Air distribution effectiveness with stratified air distribution systems  

E-Print Network (OSTI)

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

Chen, Qingyan "Yan"

282

Optimal Outside Air Control for Air Handling Units with Humidity Control  

E-Print Network (OSTI)

Most air handling units (AHUs) in commercial buildings have the (air) economizer cycle to use outside air for free cooling under certain outside air conditions. Ideally the economizer cycle is enabled if outside air enthalpy is less than return air enthalpy. During the economizer cycle, outside air flow is modulated to seek mixed air temperature at a supply air temperature set point. Since the outside air may be dry during the economizer cycle, humidification is required for AHUs with humidity control. As a result, the economizer cycle saves cooling energy but requires excessive steam for humidification. Therefore the economizer cycle may not be economical. An optimal outside air control method is developed to minimize the total cost of mechanical cooling and steam humidification. The impacts of chilled water price, steam price, and space minimum humidity set point are analyzed. Finally the optimal outside air control zones are presented on a psychrometric chart under differential energy price ratios and minimum indoor humidity set points.

Wang, G.; Liu, M.

2006-01-01T23:59:59.000Z

283

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

Science Conference Proceedings (OSTI)

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

Ihab Samy; Ian Postlethwaite; Dawei Gu

2009-03-01T23:59:59.000Z

284

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

285

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

286

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

287

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

288

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

289

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

290

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

291

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

292

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

293

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

294

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...

295

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

296

Investigating the Possibility of Using BART for Air Freight Movement  

E-Print Network (OSTI)

safety with minimum pollution and land use. This is requiredreduce air pollution, and improve economic land use, driverdoing so Pollution reduction by doing so Land use efficiency

Lu, Xiao-Yun; Hanson, Matt; Graham, Michael; Nishinaga, Eugene; Lu, Richard

2008-01-01T23:59:59.000Z

297

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

298

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

299

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

300

Zero forcing parameters and minimum rank problems  

E-Print Network (OSTI)

The zero forcing number Z(G), which is the minimum number of vertices in a zero forcing set of a graph G, is used to study the maximum nullity / minimum rank of the family of symmetric matrices described by G. It is shown that for a connected graph of order at least two, no vertex is in every zero forcing set. The positive semidefinite zero forcing number Z_+(G) is introduced, and shown to be equal to |G|-OS(G), where OS(G) is the recently defined ordered set number that is a lower bound for minimum positive semidefinite rank. The positive semidefinite zero forcing number is applied to the computation of positive semidefinite minimum rank of certain graphs. An example of a graph for which the real positive symmetric semidefinite minimum rank is greater than the complex Hermitian positive semidefinite minimum rank is presented.

Barioli, Francesco; Fallat, Shaun M; Hall, H Tracy; Hogben, Leslie; Shader, Bryan; Driessche, P van den; van der Holst, Hein

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air conditioner minimum" 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

Cape Charles - STIP Minimum Sustainability Requirements (Virginia...  

Open Energy Info (EERE)

Share this page on Facebook icon Twitter icon Cape Charles - STIP Minimum Sustainability Requirements (Virginia) This is the approved revision of this page, as well as...

302

Parabolic equations without a minimum principle.  

E-Print Network (OSTI)

??In this thesis, we consider several parabolic equations for which the minimum principle fails. We first consider a two-point boundary value problem for a one (more)

Pang, Huadong

2007-01-01T23:59:59.000Z

303

DOE CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS...  

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

MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS DOE CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS DOE CYBER SECURITY...

304

Stochastic Variational Approach to Minimum Uncertainty States  

E-Print Network (OSTI)

We introduce a new variational characterization of Gaussian diffusion processes as minimum uncertainty states. We then define a variational method constrained by kinematics of diffusions and Schr\\"{o}dinger dynamics to seek states of local minimum uncertainty for general non-harmonic potentials.

F. Illuminati; L. Viola

1995-01-11T23:59:59.000Z

305

A New Minimum Temperature Record for Oklahoma  

Science Conference Proceedings (OSTI)

A minimum temperature of ?31F (?35C) was recorded at Nowata, Oklahoma, on 10 February 2011. This exceeded the previous record minimum temperature for Oklahoma of ?27F (?32.8C). The Nowata station is in the Oklahoma Mesonet network. High pressure was ...

Gary McManus; Thomas W. Schmidlin; Christopher A. Fiebrich

2013-04-01T23:59:59.000Z

306

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

307

Microbial oceanography of anoxic oxygen minimum zones  

E-Print Network (OSTI)

Vast expanses of oxygen-deficient and nitrite-rich water define the major oxygen minimum zones (OMZs) of the global ocean. They support diverse microbial communities that influence the nitrogen economy of the oceans, ...

Ulloa, Osvaldo

308

Parabolic equations without a minimum principle  

E-Print Network (OSTI)

In this thesis, we consider several parabolic equations for which the minimum principle fails. We first consider a two-point boundary value problem for a one dimensional diffusion equation. We show the uniqueness and ...

Pang, Huadong

2007-01-01T23:59:59.000Z

309

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

310

Minimum error discrimination of Pauli channels  

E-Print Network (OSTI)

We solve the problem of discriminating with minimum error probability two given Pauli channels. We show that, differently from the case of discrimination between unitary transformations, the use of entanglement with an ancillary system can strictly improve the discrimination, and any maximally entangled state allows to achieve the optimal discrimination. We also provide a simple necessary and sufficient condition in terms of the structure of the channels for which the ultimate minimum error probability can be achieved without entanglement assistance. When such a condition is satisfied, the optimal input state is simply an eigenstate of one of the Pauli matrices.

Massimiliano F. Sacchi

2005-06-09T23:59:59.000Z

311

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

312

DOE CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS...  

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

CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS DOE CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS DOE CYBER SECURITY EBK: CORE COMPETENCY...

313

Federal Energy Management Program: Minimum Efficiency Standards for  

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

Minimum Efficiency Minimum Efficiency Standards for Electric Motors to someone by E-mail Share Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Facebook Tweet about Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Twitter Bookmark Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Google Bookmark Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Delicious Rank Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Digg Find More places to share Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on AddThis.com... Energy-Efficient Products Federal Requirements Covered Product Categories

314

Prediction of Summer Maximum and Minimum Temperature over the Central and Western United States: The Roles of Soil Moisture and Sea Surface Temperature  

Science Conference Proceedings (OSTI)

A statistical model based on canonical correlation analysis (CCA) was used to explore climatic associations and predictability of JuneAugust (JJA) maximum and minimum surface air temperatures (Tmax and Tmin) as well as the frequency of Tmax ...

Eric J. Alfaro; Alexander Gershunov; Daniel Cayan

2006-04-01T23:59:59.000Z

315

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

316

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 ...

317

Minimum cost model energy code envelope requirements  

SciTech Connect

This paper describes the analysis underlying development of the U.S. Department of Energy`s proposed revisions of the Council of American Building Officials (CABO) 1993 Model Energy Code (MEC) building thermal envelope requirements for single-family and low-rise multifamily residences. This analysis resulted in revised MEC envelope conservation levels based on an objective methodology that determined the minimum-cost combination of energy efficiency measures (EEMs) for residences in different locations around the United States. The proposed MEC revision resulted from a cost-benefit analysis from the consumer`s perspective. In this analysis, the costs of the EEMs were balanced against the benefit of energy savings. Detailed construction, financial, economic, and fuel cost data were compiled, described in a technical support document, and incorporated in the analysis. A cost minimization analysis was used to compare the present value of the total long-nm costs for several alternative EEMs and to select the EEMs that achieved the lowest cost for each location studied. This cost minimization was performed for 881 cities in the United States, and the results were put into the format used by the MEC. This paper describes the methodology for determining minimum-cost energy efficiency measures for ceilings, walls, windows, and floors and presents the results in the form of proposed revisions to the MEC. The proposed MEC revisions would, on average, increase the stringency of the MEC by about 10%.

Connor, C.C.; Lucas, R.G.; Turchen, S.J.

1994-08-01T23:59:59.000Z

318

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...

319

Minimum wear tube support hole design  

DOE Patents (OSTI)

A minimum-wear through-bore (16) is defined within a heat exchanger tube support plate (14) so as to have an hourglass configuration as determined by means of a constant radiused surface curvature (18) as defined by means of an external radius (R3), wherein the surface (18) extends between the upper surface (20) and lower surface (22) of the tube support plate (14). When a heat exchange tube (12) is disposed within the tube support plate (14) so as to pass through the through-bore (16), the heat exchange tube (12) is always in contact with a smoothly curved or radiused portion of the through-bore surface (16) whereby unacceptably excessive wear upon the heat exchange tube (12), as normally developed by means of sharp edges, lands, ridges, or the like conventionally part of the tube support plates, is eliminated or substantially reduced.

Glatthorn, Raymond H. (St. Petersburg, FL)

1986-01-01T23:59:59.000Z

320

Geometric Complexity and Minimum Description Length Principle  

E-Print Network (OSTI)

The question of how one should decide among competing explanations of data is at the heart of the scientific enterprise. Quantitative methods of selecting among models have been advanced over the years without an underlying theoretical framework to guide the enterprise and evaluate new developments. In this paper, we show that differential geometry provides a unified understanding of the model selection problem. Foremost among its contributions is a reconceptualization of the problem as one of counting probability distributions. This reconceptualization naturally leads to development of a "geometric" complexity measure, which turns out to be equal to the Minimum Description Length (MDL) complexity measure Rissanen (1996) recently proposed. We demonstrate an application of the geometric complexity measure to model selection in cognitive psychology, with models of cognitive modeling in three different areas (psychophysics, information integration, categorization).

In Jae Myung; Shaobo Zhang; Mark A. Pitt

1999-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air conditioner minimum" 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

Air sampling in the workplace. Final report  

Science Conference Proceedings (OSTI)

This report provides technical information on air sampling that will be useful for facilities following the recommendations in the NRC`s Regulatory Guide 8.25, Revision 1, ``Air sampling in the Workplace.`` That guide addresses air sampling to meet the requirements in NRC`s regulations on radiation protection, 10 CFR Part 20. This report describes how to determine the need for air sampling based on the amount of material in process modified by the type of material, release potential, and confinement of the material. The purposes of air sampling and how the purposes affect the types of air sampling provided are discussed. The report discusses how to locate air samplers to accurately determine the concentrations of airborne radioactive materials that workers will be exposed to. The need for and the methods of performing airflow pattern studies to improve the accuracy of air sampling results are included. The report presents and gives examples of several techniques that can be used to evaluate whether the airborne concentrations of material are representative of the air inhaled by workers. Methods to adjust derived air concentrations for particle size are described. Methods to calibrate for volume of air sampled and estimate the uncertainty in the volume of air sampled are described. Statistical tests for determining minimum detectable concentrations are presented. How to perform an annual evaluation of the adequacy of the air sampling is also discussed.

Hickey, E.E.; Stoetzel, G.A.; Strom, D.J.; Cicotte, G.R. [Pacific Northwest Lab., Richland, WA (United States); Wiblin, C.M. [Advanced Systems Technology, Inc., Atlanta, GA (United States); McGuire, S.A. [Nuclear Regulatory Commission, Washington, DC (United States). Div. of Regulatory Applications

1993-09-01T23:59:59.000Z

322

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

323

Minimum Additive Waste Stabilization (MAWS). Technology summary  

Science Conference Proceedings (OSTI)

In the Minimum Additive Waste Stabilization(MAWS) concept, actual waste streams are utilized as additive resources for vitrification, which may contain the basic components (glass formers and fluxes) for making a suitable glass or glassy slag. If too much glass former is present, then the melt viscosity or temperature will be too high for processing; while if there is too much flux, then the durability may suffer. Therefore, there are optimum combinations of these two important classes of constituents depending on the criteria required. The challenge is to combine these resources in such a way that minimizes the use of non-waste additives yet yields a processable and durable final waste form for disposal. The benefit to this approach is that the volume of the final waste form is minimized (waste loading maximized) since little or no additives are used and vitrification itself results in volume reduction through evaporation of water, combustion of organics, and compaction of the solids into a non-porous glass. This implies a significant reduction in disposal costs due to volume reduction alone, and minimizes future risks/costs due to the long term durability and leach resistance of glass. This is accomplished by using integrated systems that are both cost-effective and produce an environmentally sound waste form for disposal. individual component technologies may include: vitrification; thermal destruction; soil washing; gas scrubbing/filtration; and, ion-exchange wastewater treatment. The particular combination of technologies will depend on the waste streams to be treated. At the heart of MAWS is vitrification technology, which incorporates all primary and secondary waste streams into a final, long-term, stabilized glass wasteform. The integrated technology approach, and view of waste streams as resources, is innovative yet practical to cost effectively treat a broad range of DOE mixed and low-level wastes.

Not Available

1994-02-01T23:59:59.000Z

324

Building Information Modeling - A Minimum Mathematical Configuration  

E-Print Network (OSTI)

In the current context, the standardization of building construction is not limited to a specific country or to a specific building code. Trade globalization has emphasized the need for standardization in the process of exchange of design information, whether it is in the form of drawings or documents. Building Information Modeling is the latest transformational technology that supports interactive development of design information for buildings. No single Building Information Modeling software package is used in the Architecture Engineering Construction and Facilities Management industries, which is strength as new ideas develop, but a hindrance as the new ideas flow at a different pace into the various programs. The standards divergence of various software results in a limited ability to exchange data between and within projects, especially one sees the difficulty in moving data from one program to another. The Document eXchange File format represents an early attempt to standardize the exchange of drawing information by Autodesk. However, the data was limited to geometric data required for the production of plotted drawings. Metadata in a Building Information Model provides a method to add information to the basic geometric configuration provided in a Document eXchange File. Building Information Model programs use data structures to define smart objects that encapsulate building data in a searchable and robust format. Due to the complexity of building designs eXtensible Markup Language schemas of three dimensional models are often large files that can contain considerable amounts of superfluous information. The aim of this research is to exclude all the superfluous information from the design information and determine the absolute minimum information required to execute the construction of a project. A plain concrete beam element was used as the case study for this research. The results show that a minimal information schema can be developed for a simple building element. Further research is required on more complex elements.

Bhandare, Ruchika

2012-08-01T23:59:59.000Z

325

Minimum Efficiency Standards for Electric Motors | Department of Energy  

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

Minimum Efficiency Standards for Electric Motors Minimum Efficiency Standards for Electric Motors Minimum Efficiency Standards for Electric Motors October 7, 2013 - 11:28am Addthis Section 313 of the Energy Independence and Security Act (EISA) of 2007 raised Federal minimum efficiency standards for general-purpose, single-speed, polyphase induction motors of 1 to 500 horsepower (hp). This new standard took effect in December 2010. The new minimum efficiency levels match FEMP's performance requirement for these motors. As a result of this increase in mandatory minimum standards and combined with the lack of significant availability of motors exceeding these standards, FEMP is suspending the purchasing specification for electric motors. Federal buyers may select for purchase any motor that meets design requirements.

326

Hazardous Waste Minimum Distance Requirements (Connecticut) | Department of  

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

Minimum Distance Requirements (Connecticut) Minimum Distance Requirements (Connecticut) Hazardous Waste Minimum Distance Requirements (Connecticut) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info State Connecticut Program Type Siting and Permitting Provider Department of Energy and Environmental Protection These regulations set minimum distance requirements between certain types of facilities that generate, process, store, and dispose of hazardous waste

327

Minimum Concave Cost Flow Over a Grid Network  

E-Print Network (OSTI)

Oct 12, 2012 ... Abstract The minimum concave cost network flow problem ... a grid network with a general nonnegative separable concave cost function.

328

Minimum cost subset selection with two competing agents  

E-Print Network (OSTI)

Nov 11, 2010 ... Minimum cost subset selection with two competing agents. Claudia Marini( nicosia ***at*** dia.uniroma3.it) Gaia Nicosia(nicosia ***at***...

329

Minimum Concave Cost Flow Over a Grid Network  

E-Print Network (OSTI)

Oct 12, 2012 ... Abstract: The minimum concave cost network flow problem (MCCNFP) is NP- hard, but efficient polynomial-time algorithms exist for some...

330

Minimum cost subset selection with two competing agents  

E-Print Network (OSTI)

do not require qualified personnel, or when internal costs proportional to skills are incurred .... In conclusion, we tackle four different versions of the minimum cost...

331

Rules Establishing Minimum Standards Relating to Location, Design...  

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

Standards Relating to Location, Design, Construction, and Maintenance of Onsite Wastewater Treatment Systems (Rhode Island) Rules Establishing Minimum Standards Relating to...

332

Microbial metatranscriptomics in a permanent marine oxygen minimum zone  

E-Print Network (OSTI)

Simultaneous characterization of taxonomic composition, metabolic gene content and gene expression in marine oxygen minimum zones (OMZs) has potential to broaden perspectives on the microbial and biogeochemical dynamics ...

Stewart, Frank J.

333

Study on optimal train movement for minimum energy consumption.  

E-Print Network (OSTI)

?? The presented thesis project is a study on train energy consumption calculation and optimal train driving strategies for minimum energy consumption. This study is (more)

Gkortzas, Panagiotis

2013-01-01T23:59:59.000Z

334

Estimate of Cost-Effective Potential for Minimum Efficiency Performanc...  

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

Cost-Effective Potential for Minimum Efficiency Performance Standards in 13 Major World Economies Energy Savings, Environmental and Financial Impacts Title Estimate of...

335

An Efficient Algorithm for Computing Robust Minimum Capacity st Cuts  

E-Print Network (OSTI)

Mar 20, 2008 ... Abstract: The Minimum Capacity s-t Cut Problem (Min Cut) is an intensively studied problem in combinatorial optimization. In this paper, we...

336

Optimization Online - Guaranteed Minimum-Rank Solutions of ...  

E-Print Network (OSTI)

Jun 28, 2007 ... Guaranteed Minimum-Rank Solutions of Linear Matrix Equations via Nuclear Norm Minimization. Benjamin Recht(brecht ***at*** caltech.edu)

337

On the complexity of maximizing the minimum Shannon capacity in ...  

E-Print Network (OSTI)

Jan 18, 2010 ... On the complexity of maximizing the minimum Shannon capacity in wireless networks by joint channel assignment and power allocation.

338

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

339

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

340

FINAL PROJECT REPORT LOAD MODELING TRANSMISSION RESEARCH  

E-Print Network (OSTI)

StalledAirConditionerCompressors,IEEETransactionsonStalled AirConditionerCompressors,IEEETransactionsonsuggested thatthecompressortorquemaynotbeconstant.

Lesieutre, Bernard

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air conditioner minimum" 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

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...

342

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...

343

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)...

344

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...

345

--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...

346

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

347

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

348

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

349

Characterization of imaging phone cameras using minimum description length principle  

Science Conference Proceedings (OSTI)

In this paper, a new Minimum Description Length (MDL) approach for the characterization of a mobile phone's color camera is presented. The use of high-order polynomials, Fourier sine series, and artificial neural networks (ANN) for solving this problem ... Keywords: artificial neural network, high-order polynomial, imaging mobile phone, minimum description length

Adrian Burian; Aki Happonen; Mihaela Cirlugea

2008-04-01T23:59:59.000Z

350

Underwater vehicles: The minimum time problem Department of Mathematics  

E-Print Network (OSTI)

Underwater vehicles: The minimum time problem M. Chyba Department of Mathematics 2565 McCarthy Mall for a class of underwater vehicles. We focus on the situation of initial and final configurations at rest In this paper we pursue the analysis of the minimum time problem for a special class of underwater vehicles, see

Sontag, Eduardo

351

Underwater vehicles: The minimum time problem Department of Mathematics  

E-Print Network (OSTI)

Underwater vehicles: The minimum time problem M. Chyba Department of Mathematics 2565 McCarthy Mall for a class of underwater vehicles. We focus on the situation of initial and final configurations at rest the analysis of the minimum time problem for a special class of underwater vehicles, see [5], [6] for previous

Sussmann, Hector

352

Short title: STOCHASTIC VARIATIONAL APPROACH TO MINIMUM UNCERTAINTY  

E-Print Network (OSTI)

We introduce a new variational characterization of Gaussian diffusion processes as minimum uncertainty states. We then define a variational method constrained by kinematics of diffusions and Schrdinger dynamics to seek states of local minimum uncertainty for general non-harmonic potentials. PACS numbers:03.65.-w, 03.65.Ca, 03.65.Bz 1.

Fabrizio Illuminati; Lorenza Viola

1995-01-01T23:59:59.000Z

353

Rules Establishing Minimum Standards Relating to Location, Design,  

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

Rules Establishing Minimum Standards Relating to Location, Design, Rules Establishing Minimum Standards Relating to Location, Design, Construction, and Maintenance of Onsite Wastewater Treatment Systems (Rhode Island) Rules Establishing Minimum Standards Relating to Location, Design, Construction, and Maintenance of Onsite Wastewater Treatment Systems (Rhode Island) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info State Rhode Island Program Type Environmental Regulations

354

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

355

Air pollution  

SciTech Connect

This book reports that homeowners do not have adequate assurance that companies have demonstrated a minimum level of competency in measuring radon and that the test results provided to them have some degree of accuracy. This is because the voluntary nature of the RMP program allows firms to market devices that have not been tested or that failed the test. In addition, the RMP program does not require measurement companies to implement quality assurance programs. GAO believes that two changes in the RMP program that would increase homeowners' assurance are requiring measurement firms to pass the RMP program before marketing their devices, and requiring radon measurement firms to demonstrate the existence of adequate quality assurance programs as a condition for participating in the RMP program.

1990-08-01T23:59:59.000Z

356

Trends of Maximum and Minimum Temperatures in Northern South America  

Science Conference Proceedings (OSTI)

This paper presents the results of testing the homogeneity of the basic data used in this study, that is, the mean monthly maximum and minimum temperature (as derived from daily observations) of several long-term climatological stations of ...

Ramon A. Quintana-Gomez

1999-07-01T23:59:59.000Z

357

Theory and Applications of the Minimum Spanning Tree Rank Histogram  

Science Conference Proceedings (OSTI)

A minimum spanning tree (MST) rank histogram (RH) is a multidimensional ensemble reliability verification tool. The construction of debiased, decorrelated, and covariance-homogenized MST RHs is described. Experiments using Euclidean L2, variance, ...

Daniel Gombos; James A. Hansen; Jun Du; Jeff McQueen

2007-04-01T23:59:59.000Z

358

Selection of minimum earthquake intensity in calculating pipe failure probabilities  

SciTech Connect

In a piping reliability analysis, it is sometimes necessary to specify a minimum ground motion intensity, usually the peak acceleration, below which the ground motions are not considered as earthquakes and, hence, are neglected. The calculated probability of failure of a piping system is dependent on this selected minimum earthquake intensity chosen for the analysis. A study was conducted to determine the effects of the minimum earthquake intensity on the probability of pipe failure. The results indicated that the probability of failure of the piping system is not very sensitive to the variations of the selected minimum peak ground acceleration. However, it does have significant effects on various scenarios that make up the system failure.

Lo, T.Y.

1985-01-01T23:59:59.000Z

359

Minimum Stream Flow and Water Sale Contracts (Indiana)  

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

The commission may provide certain minimum quantities of stream flow or sell water on a unit pricing basis for water supply purposes from the water supply storage in reservoir impoundments or parts...

360

Minimum Purchase Price Regulations (Prince Edward Island, Canada)  

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

The Minimum Purchase Price Regulations establish the price which utilities must pay for power produced by large-scale renewable energy generators that is those capable of producing more than 100...

Note: This page contains sample records for the topic "air conditioner minimum" 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

Minimum Wage Effects Across State Borders: Estimates Using Contiguous Counties  

E-Print Network (OSTI)

on earnings and employment in restaurants and other low-wageOur primary focus is on restaurants, since they are the mostof minimum wages on restaurant earnings, but the local

Dube, Andrajit; Lester, T. William; Reich, Michael

2010-01-01T23:59:59.000Z

362

What Solar Oscillation Tell us About the Solar Minimum  

E-Print Network (OSTI)

The availability of continuous helioseismic data for two consecutive solar minima has provided a unique opportunity to study the changes in the solar interior that might have led to this unusual minimum. We present preliminary analysis of inter mediate-degree mode frequencies in the 3 mHz band during the current period of minimal solar activity and show that the mode frequencies are significantly lower than those during the previous activity minimum. Our analysis do not show any signature of the beginning of cycle 24 till the end of 2008. In addition, the zonal and meridional flow patterns inferred from inverting frequencies also hint for a delayed onset of a new cycle. The estimates of travel time are higher than the previous minimum confirming a relatively weak solar activity during the current minimum.

Jain, Kiran; Burtseva, O; Hernandez, I Gonzalez; Hill, F; Howe, R; Kholikov, S; Komm, R; Leibacher, J

2010-01-01T23:59:59.000Z

363

An Efficient Algorithm for Computing Robust Minimum Capacity st Cuts  

E-Print Network (OSTI)

Apr 3, 2008 ... The Minimum Capacity s-t Cut Problem (Min Cut) is an intensively ... In this paper, we study Min Cut when arc capacities are uncertain but...

364

Do We Know of Any Maunder Minimum Stars?  

E-Print Network (OSTI)

Most stars previously identified as Maunder minimum stars are old stars evolved off of the main sequence. Analysis of activity measurements from the California and Carnegie Planet Search program stars and Hipparcos parallaxes implies that the canonical age-chromospheric activity relation breaks down for stars older than $\\sim 6$ Gyr when activity is calculated from Mount Wilson S values. Stars only 1 magnitude above the main sequence exhibit significantly suppressed activity levels which have been mistaken for examples of Maunder minimum behavior.

Jason T. Wright

2004-06-15T23:59:59.000Z

365

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.

366

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...

367

Some Perspectives on Recent In Situ Air Temperature Observations: Modeling the Microclimate inside the Radiation Shields  

Science Conference Proceedings (OSTI)

Air temperature measurement has inherent biases associated with the particular radiation shield and sensor deployed. The replacement of the Cotton Region Shelter (CRS) with the MaximumMinimum Temperature System (MMTS) and the introduction of ...

X. Lin; K. G. Hubbard; E. A. Walter-Shea; J. R. Brandle; G. E. Meyer

2001-09-01T23:59:59.000Z

368

Spatial and Seasonal Variations of Air Temperature Lapse Rates in Alpine Regions  

Science Conference Proceedings (OSTI)

Air temperature decrease with altitude was estimated by simple linear regression for several regions around northern Italy for minimum, maximum, and mean monthly temperatures. The comparison of the gradients with previous works revealed the ...

Christian Rolland

2003-04-01T23:59:59.000Z

369

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

370

Minimum Stream Flow Standards (Connecticut) | Department of Energy  

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

Minimum Stream Flow Standards (Connecticut) Minimum Stream Flow Standards (Connecticut) Minimum Stream Flow Standards (Connecticut) < Back Eligibility Agricultural Commercial Construction Developer Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Water Buying & Making Electricity Program Info State Connecticut Program Type Siting and Permitting Provider Department of Energy and Environmental Protection These regulations apply to all dams and structures which impound or divert waters on rivers or their tributaries, with some exceptions. The

371

Development and Online Opertation of Minimum Bias Triggers in ATLAS  

E-Print Network (OSTI)

The design of minimum bias triggers should allow for a highly efficient selection on pp-collisions, while minimising any possible bias in the event selection. In ATLAS two main minimum bias triggers have been developed using complementary technologies. A hardware based first level trigger, consisting of 32 plastic scintillators, has proven to efficienctly select pp-interactions. In particular during the start-up phase this trigger played a crucial role for the commissioning of the central trigger processor and detector sub-systems. A complementary selection is achieved by a multi-level minimum bias trigger, seeded off a random trigger on filled bunches. For the event selection at higher trigger levels a dedicated algorithm was developed, able to cope with around 86 millions of detector signals per bunch-crossing. We will present these trigger systems and their deployment online, highlighting their performance and trigger efficiencies. We outline as well the operation with increasing beam intensities and lumin...

Martin, T; The ATLAS collaboration

2010-01-01T23:59:59.000Z

372

Building Energy Software Tools Directory: VentAir 62  

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

VentAir 62 VentAir 62 VentAir 62 logo. A ventilation airflow calculator that allows easy, accurate compliance with ASHRAE Standard 62-89. The program automates the cumbersome calculations presented by the Standard's Equation 6-1. The Windows-based program helps building designers design multiple-space ventilation systems that meet the requirements of the Standard. This tool analyzes space and system information from the VAV terminal and air handler unit schedules, calculates ventilation airflow requirements (space minimums and system-level required minimum), and provides additional or revised information for the VAV and AHU schedules. Keywords ventilation design, ASHRAE Standard 62 Validation/Testing N/A Expertise Required Knowledge of ASHRAE Standard 62 requirements and ventilation design.

373

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

374

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

375

ATLAS measurements of minimum bias and soft QCD  

Science Conference Proceedings (OSTI)

The first measurements of charged particle production in proton?proton collisions at center?of?mass energy s ?=?900? GeV and 7 TeV recorded with the ATLAS detector at the LHC are presented. Minimum bias distributions are measured for events with at least one charged particle in the kinematic range |?| 500? MeV and compared with the predictions from various Monte Carlo models. Activity in the underlying event was measured with respect to the highest p T track in the event. Both the minimum bias and underlying event measurements are fully corrected for detector effects to obtain distributions at the hadron level.

Maaike Limper; The ATLAS collaboration

2010-01-01T23:59:59.000Z

376

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.

377

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

378

Compliance of clinical trial registries with the World Health Organization minimum data set: a survey  

E-Print Network (OSTI)

Organization minimum data set: a survey Lorenzo P Moja* 1 ,of the WHO minimum data set. Methods: A retrospectivethe launch of the WHO minimum data set seemed to positively

2009-01-01T23:59:59.000Z

379

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

380

Recent State Minimum Temperature Records in the Midwest  

Science Conference Proceedings (OSTI)

State minimum temperature records were set or tied in Indiana (?37.8C) and Kentucky (?38.3C) in January 1994, and in Illinois (?37.2C), Iowa (?43.9C), Minnesota (?51.1C), and Wisconsin (?48.3C) in February 1996. The veracity of these ...

Thomas W. Schmidlin

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air conditioner minimum" 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

Minimum-outage broadcast in wireless networks with fading channels  

Science Conference Proceedings (OSTI)

We consider the problem of cooperative broadcasting for minimum outage in wireless networks. We consider wireless multihop broadcast as a set of transmitters that transmit in a certain order. The receiving nodes are able to combine all the previous transmissions ... Keywords: broadcast, multicast, outage, wireless networks

Tolga Girici; Gulizar Duygu Kurt

2010-07-01T23:59:59.000Z

382

Power Allocations in Minimum-Energy SER Constrained Cooperative Networks  

E-Print Network (OSTI)

1 Power Allocations in Minimum-Energy SER Constrained Cooperative Networks Behrouz Maham-Spring). Behrouz Maham and Are Hjørungnes are with UNIK ­ University Graduate Center, University of Oslo, Norway. Behrouz Maham is currently a visiting scholar at Department of Electrical Engineering, Stanford

Paris-Sud XI, Université de

383

CONSTRAINED MINIMUM ENTROPY AND MAXIMUM NEGENTROPY BLIND DECONVOLUTION AND EQUALIZATION  

E-Print Network (OSTI)

CONSTRAINED MINIMUM ENTROPY AND MAXIMUM NEGENTROPY BLIND DECONVOLUTION AND EQUALIZATION Seungjin on the variance of decon­ volved signal. We also consider the maximum negen­ tropy principle and show that the CME version, without any prior knowledge (such as channel impulse response, training data). As the demand

Choi, Seungjin

384

A faster distributed protocol for constructing a minimum spanning tree  

Science Conference Proceedings (OSTI)

This paper studies the problem of constructing a minimum-weight spanning tree (MST) in a distributed network. This is one of the most important problems in the area of distributed computing. There is a long line of gradually improving protocols ...

Michael Elkin

2004-01-01T23:59:59.000Z

385

Minimum cost multiple multicast network coding with quantized rates  

Science Conference Proceedings (OSTI)

In this paper, we consider multiple multicast sessions with intra-session network coding where rates over all links are integer multiples of a basic rate. Although having quantized rates over communication links is quite common, conventional minimum ... Keywords: Decomposition algorithm, Multicast networks, Network coding

M. A. Raayatpanah; H. Salehi Fathabadi; B. H. Khalaj; S. Khodayifar

2013-04-01T23:59:59.000Z

386

Minimum-mirror-area single-stage solar concentrators  

SciTech Connect

A means of generating a comcentrating mirror of minimum size for a given average flux-concentration output is outlined. The method is useful for acceptance angles typical of those required for tilting and tracking solar concentrators and can result in substantial cost savings when expensive mirrors (i.e.,glass) are used. Comparisons are made with compound parabolic concentrators.

Mills, D.; Harting, E.; Giutronich, J.E.; Cellich, W.; Morton, A.; Walker, I.

1980-12-01T23:59:59.000Z

387

THE SOLAR CYCLE AT THE MAUNDER MINIMUM EPOCH  

E-Print Network (OSTI)

THE SOLAR CYCLE AT THE MAUNDER MINIMUM EPOCH HIROKO MIYAHARA, DMITRY SOKOLOFF and ILYA G. USOSKIN Solar-Terrestrial Environmental Laboratory, Nagoya University Nagoya, Aichi 464-8601, Japan Department minima, when the solar dynamo was in a special mode. We review available sets of direct and indirect data

Usoskin, Ilya G.

388

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

389

Equivalence in Ventilation and Indoor Air Quality  

SciTech Connect

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

Sherman, Max; Walker, Iain; Logue, Jennifer

2011-08-01T23:59:59.000Z

390

Primary zone air proportioner  

SciTech Connect

An air proportioner is provided for a liquid hydrocarbon fueled gas turbine of the type which is convertible to oil gas fuel and to coal gas fuel. The turbine includes a shell for enclosing the turbine, an air duct for venting air in said shell to a gasifier, and a fuel injector for injecting gasified fuel into the turbine. The air proportioner comprises a second air duct for venting air from the air duct for mixing with fuel from the gasifier. The air can be directly injected into the gas combustion basket along with the fuel from the injector or premixed with fuel from the gasifier prior to injection by the fuel injector.

Cleary, Edward N. G. (San Diego, CA)

1982-10-12T23:59:59.000Z

391

Air Pollution Control (Indiana)  

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

This legislation establishes the Department of Environmental Management and the Air Pollution Control Board, which are tasked with the prevention, abatement, and control of air pollution by all...

392

MINIMUM EMITTANCE LATTICE FOR SYNCHROTRON RADIATION STORAGE RINGS  

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

MINIMUM EMITTANCE LATTICE FOR MINIMUM EMITTANCE LATTICE FOR SYNCHROTRON RADIATION STORAGE RINGS 1. C. Teng ANL/FNAL LS-17 L. Teng March 18, 1985 The natural emittance of an electron beam in a storage ring is given by (see e.g., M. Sands, SLAC 21) (1) where Cq =~~= 3.832 x 10-l3 m 32/3 mc J x partition factor in the bending plane y = total energy in mc 2 uni ts p orbit radius in bending magnets (assumed the same in all magne ts) H yn 2 - + 2ann ' + Bn I 2 ( a, B, Y = betatron functions ) n, n I dispersion functions <> = averaging over bending magnets We shall calculate for each bending magnet, then average over all magnets. 2 A. General Expression for H This can be calculated in a straightforward manner, but we can save a great deal of arithmetic with some preliminary formal analytical

393

Minimum/maximum excitation limiter performance goals for small generation  

SciTech Connect

Small generators connected to the utility system often act as followers as they tend to follow system bus voltage variations. For the lack of kVA capacity, small machines tend to be susceptible to becoming over or under excited (excessive Vars in or Vars out of the generator) as the voltage regulator tries to maintain its setpoint with variations in system bus voltage. Minimum and maximum excitation limiters are utilized to limit the voltage regulator characteristic response to system bus voltage changes, that can otherwise result in machine overheating and/or pulling out of synchronization. This paper reviews the operating performance of minimum and maximum excitation limiters used on small machines, and provides the user typical performance expectations. The examples will highlight both main field and exciter field applications. Lastly, conditions will be reviewed that may occur during excitation limiter initial startup that can affect their ability to be initially tuned.

Eberly, T.W.; Schaefer, R.C.

1995-12-01T23:59:59.000Z

394

The minimum-uncertainty coherent states for Landau levels  

Science Conference Proceedings (OSTI)

The Glauber minimum-uncertainty coherent states with two variables for Landau levels, based on the representation of Weyl-Heisenberg algebra by two different modes, have been studied about four decades ago. Here, we introduce new two-variable coherent states with minimum uncertainty relationship for Landau levels in three different methods: the infinite unitary representation of su(1, 1) is realized in two different methods, first, by consecutive levels with the same energy gaps and also with the same value for z-angular momentum quantum number, then, by shifting z-angular momentum mode number by two units while the energy level remaining the same. Besides, for su(2), whether by lowest Landau levels or Landau levels with lowest z-angular momentum, just one finite unitary representation is introduced. Having constructed the generalized Klauder-Perelomov coherent states, for any of the three representations, we obtain their Glauber coherency by displacement operator of Weyl-Heisenberg algebra.

Dehghani, A. [Physics Department, Payame Noor University, P. O. Box 19395-4697 Tehran (Iran, Islamic Republic of); Fakhri, H. [Department of Theoretical Physics and Astrophysics, Faculty of Physics, University of Tabriz, P. O. Box 51666-16471 Tabriz (Iran, Islamic Republic of); Mojaveri, B. [Department of Physics, Azarbaijan Shahid Madani University, P. O. Box 51745-406 Tabriz (Iran, Islamic Republic of)

2012-12-15T23:59:59.000Z

395

JBIG2 Symbol Dictionary Design Based on Minimum Spanning Trees  

E-Print Network (OSTI)

The JBIG2 standard is a very flexible bi-level image coding strategy based on pattern matching. The encoder collects a set of symbols in a dictionary and encodes a page by reference to the dictionary symbols. JBIG2 allows the encoder to view all symbols and choose a good set for the dictionary. In this paper, we examine the bit rate trade-off that arises in choosing different dictionary sizes. In particular, we propose a suboptimal dictionary design technique based on minimum spanning trees. This technique gives competitive compression ratios and allows us to specify the dictionary size almost arbitrarily, thus providing a way to study the bit rate trade-off problem in detail. Keywords: JBIG2, Text image compression, Symbol dictionary, Minimum spanning tree 1

Yan Ye; Pamela Cosman

2000-01-01T23:59:59.000Z

396

Feasibility of an appliance energy testing and labeling program for Sri Lanka  

Science Conference Proceedings (OSTI)

A feasibility study evaluated the costs and benefits of establishing a program for testing, labeling and setting minimum efficiency standards for appliances and lighting in Sri Lanka. The feasibility study included: refrigerators, air-conditioners, flourescent lighting (ballasts & CFls), ceiling fans, motors, and televisions.

Biermayer, Peter; Busch, John; Hakim, Sajid; Turiel, Issac; du Pont, Peter; Stone, Chris

2000-04-01T23:59:59.000Z

397

Impact of Minimum Load Operation on Steam Turbines  

Science Conference Proceedings (OSTI)

Some utilities, as part of a fleet management strategy, are keeping baseload-design plants that are not competitive for 24/7 dispatch at minimum loads to increase their ability to respond to changing demand. Units being operated this way face some associated risks and may see an additional drop in availability, further exacerbating supply management issues and increasing O&M costs. This report seeks to capture ...

2013-11-05T23:59:59.000Z

398

Minimum weight perfect matching in O(1) parallel time  

E-Print Network (OSTI)

Consider a 2-D square array of qubits of infinite extent. We provide a formal proof that the infinite size minimum weight perfect matching problem associated with running a particular class of topological quantum error correction codes on this array can be exactly solved with a corresponding infinite 2-D square array of classical computing devices in constant average time per round of error detection provided physical error rates are below fixed nonzero values, and other physically reasonable assumptions.

Austin G. Fowler

2013-07-06T23:59:59.000Z

399

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

E-Print Network (OSTI)

Gas Price MBtu Oil Price MBtu Price Source c d e f g h i j jGas or Oil) - Central Air Conditioner - Air-Source HeatGas or Oil) - Central Air Conditioner - Air-Source Heat

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

2007-01-01T23:59:59.000Z

400

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

E-Print Network (OSTI)

Rate Electricit Carbon Oil Price Source b Source Rate SourceGas or Oil) - Central Air Conditioner - Air-Source HeatGas or Oil) - Central Air Conditioners - Air-Source Heat

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

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air conditioner minimum" 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

2003 status report savings estimates for the energy star(R) voluntary labeling program  

E-Print Network (OSTI)

for Carbon Heat Rate Oil Price Source b Electricity SourceGas or Oil) -Central Air Conditioner -Air-Source Heat Pump -Gas or Oil) - Central Air Conditioners - Air-Source Heat

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

2004-01-01T23:59:59.000Z

402

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

E-Print Network (OSTI)

Gas Price MBtu Oil Price MBtu Price Source Carbon EmissionsGas or Oil) - Central Air Conditioner - Air-Source HeatGas or Oil) - Central Air Conditioner - Air-Source Heat

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

2006-01-01T23:59:59.000Z

403

2002 status report: Savings estimates for the ENERGY STAR(R) voluntary labeling program  

E-Print Network (OSTI)

for Carbon Source Rate Oil Price Source b Electricity SourceGas or Oil) -Central Air Conditioner -Air-Source Heat Pump -Gas or Oil) - Central Air Conditioners - Air-Source Heat

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

2003-01-01T23:59:59.000Z

404

Calendar Year 2009 Program Benefits for ENERGY STAR Labeled Products  

E-Print Network (OSTI)

Res. Gas Price Oil Price Price Sources Elec. Carbon EmissionGas or Oil) Central Air Conditioner Air-Source Heat PumpGas or Oil) Central Air Conditioner Air-Source Heat Pump

Homan, Gregory K

2011-01-01T23:59:59.000Z

405

Calendar Year 2008 Program Benefits for ENERGY STAR Labeled Products  

E-Print Network (OSTI)

Res. Gas Price Oil Price Price Sources Elec. Carbon EmissionGas or Oil) Central Air Conditioner Air-Source Heat PumpGas or Oil) Central Air Conditioner Air-Source Heat Pump

Homan, GregoryK

2010-01-01T23:59:59.000Z

406

Calendar Year 2007 Program Benefits for ENERGY STAR Labeled Products  

E-Print Network (OSTI)

Price MBtu Oil Price $/MBtu Price Sources, US DOE 3 CarbonGas or Oil) - Central Air Conditioner - Air-Source HeatGas or Oil) - Central Air Conditioner - Air-Source Heat

Sanchez, Marla Christine

2008-01-01T23:59:59.000Z

407

Savings estimates for the ENERGY STAR (registered trademark) voluntary labeling program: 2001 status report  

E-Print Network (OSTI)

Gas Price MBtu Oil Price MBtu Price Source The followingGas or Oil) -Central Air Conditioner -Air-Source Heat Pump -Gas or Oil) - Central Air Conditioners - Air-Source Heat

Webber, Carrie A.; Brown, Richard E.; Mahajan, Akshay; Koomey, Jonathan G.

2002-01-01T23:59:59.000Z

408

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

E-Print Network (OSTI)

Rate Electricit Carbon Oil Price Source b Source Rate SourceGas or Oil) -Central Air Conditioner -Air-Source Heat Pump -Gas or Oil) - Central Air Conditioners - Air-Source Heat

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

2004-01-01T23:59:59.000Z

409

Energy Basics: Solar Air Heating  

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

EERE: Energy Basics Solar Air Heating Solar air heating systems use air as the working fluid for absorbing and transferring solar energy. Solar air collectors (devices to heat air...

410

An Obstacle-avoiding Minimum Variation B-spline Problem  

E-Print Network (OSTI)

We study the problem of computing a planar curve, restricted to lie between two given polygonal chains, such that the integral of the square of arc-length derivative of curvature along the curve is minimized. We introduce the Minimum Variation B-spline problem which is a linearly constrained optimization problem over curves defined by Bspline functions only. An empirical investigation indicates that this problem has one unique solution among all uniform quartic B-spline functions. Furthermore, we prove that, for any B-spline function, the convexity properties of the problem are preserved subject to a scaling and translation of the knot sequence defining the B-spline. 1

Tomas Berglund; Inge Sderkvist

2003-01-01T23:59:59.000Z

411

Isokinetic air sampler  

DOE Patents (OSTI)

An isokinetic air sampler includes a filter, a holder for the filter, an air pump for drawing air through the filter at a fixed, predetermined rate, an inlet assembly for the sampler having an inlet opening therein of a size such that isokinetic air sampling is obtained at a particular wind speed, a closure for the inlet opening and means for simultaneously opening the closure and turning on the air pump when the wind speed is such that isokinetic air sampling is obtained. A system incorporating a plurality of such samplers provided with air pumps set to draw air through the filter at the same fixed, predetermined rate and having different inlet opening sizes for use at different wind speeds is included within the ambit of the present invention as is a method of sampling air to measure airborne concentrations of particulate pollutants as a function of wind speed.

Sehmel, George A. (Richland, WA)

1979-01-01T23:59:59.000Z

412

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.

413

Selected State Legislation and  

Gasoline and Diesel Fuel Update (EIA)

and and Selected State Legislation and Regulation in the Annual Energy Outlook Energy Information Administration/Assumptions to the Annual Energy Outlook 2007 156 Appendix A: Handling of Federal and Selected State Legislation and Regulation in the Annual Energy Outlook 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. Included for categories represented in the AEO residential sector forecast. a. Room Air Conditioners Current standard of 9.8 EER Federal Register Notice of Final Rulemaking. b. Other Air Conditioners (<5.4 tons) Current standard 10 SEET for central air conditioners and heat

414

Selected State Legislation and  

Gasoline and Diesel Fuel Update (EIA)

and and Selected State Legislation and Regulation in the Annual Energy Outlook U. S. Energy Information Administration/Assumptions to the Annual Energy Outlook 2009 173 Appendix A: Handling of Federal and Selected State Legislation and Regulation in the Annual Energy Outlook Legislation Brief Description AEO Handling Ba sis Residential Sector A. National Appliance Energy Conservation Act of 1987 Requires Secretary of Energy to set minimum efficiency standards for 10 appliance categories. Included for categories represented in the AEO residential sector forecast. a. Room Air Conditioners Current standard of 9.8 EER Federal Register Notice of Final Rulemaking. b. Other Air Conditioners (<5.4 tons) Current standard 10 SEET for central air conditioners and heat

415

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

416

Assumptions to the Annual Energy Outlook  

Gasoline and Diesel Fuel Update (EIA)

Assumptions to the Annual Energy Outlook 2004 Assumptions to the Annual Energy Outlook 2004 143 Appendix A: Handling of Federal and Selected State Legislation and Regulation in the Annual Energy Outlook 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 a. Room Air Conditioners Current standard of 8.82 EER Federal Register Notice of Final Rulemaking, b. Other Air Conditioners (<5.4 tons) Current standard 10 SEER for central air conditioner and heat pumps, increasing to 12 SEER in 2006. Federal Register Notice of Final Rulemaking, c. Water Heaters Electric: Current standard .86 EF, incr easing to .90 EF in 2004. Gas: Curren

417

Selected State Legislation and  

Gasoline and Diesel Fuel Update (EIA)

170 170 Energy Information Administration/Assumptions to the Annual Energy Outlook 2009 Appendix A: Handling of Federal and Selected State Legislation and Regulation in the Annual Energy Outlook 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. Included for categories represented in the AEO residential sector forecast. a. Room Air Conditioners Current standard of 9.8 EER Federal Register Notice of Final Rulemaking. b. Other Air Conditioners (<5.4 tons) Current standard 10 SEET for central air conditioners and heat pumps, increasing to 13 SEER in 2006. Federal Register Notice of Final Rulemaking.

418

Development of Refrigerant Change Indicator and Dirty Air Filter Sensor  

Science Conference Proceedings (OSTI)

The most common problems affecting residential and light commercial heating, ventilation, and air-conditioning (HVAC) systems are slow refrigerant leaks and dirty air filters. Equipment users are usually not aware of a problem until most of the refrigerant has escaped or the air filter is clogged with dirt. While a dirty air filter can be detected with a technology based on the air pressure differential across the filter, such as a ''whistling'' indicator, it is not easy to incorporate this technology into existing HVAC diagnostic equipment. Oak Ridge National Laboratory is developing a low-cost, nonintrusive refrigerant charge indicator and dirty air filter detection sensor. The sensors, based on temperature measurements, will be inexpensive and easy to incorporate into existing heat pumps and air conditioners. The refrigerant charge indicator is based on the fact that when refrigerant starts to leak, the evaporator coil temperature starts to drop and the level of liquid subcooling drops. When the coil temperature or liquid subcooling drops below a preset reading, a signal, such as a yellow warning light, can be activated to warn the equipment user that the system is undercharged. A further drop of coil temperature or liquid subcooling below another preset reading would trigger a second warning signal, such as a red warning light, to warn the equipment user that the unit now detects a leak and immediate action should be taken. The warning light cannot be turned off until it is re-set by a refrigeration repairman. To detect clogged air filters, two additional temperature sensors can be applied, one each across the evaporator. When the air filter is accumulating buildup, the temperature differential across the evaporator will increase because of the reduced airflow. When the temperature differential reaches a pre-set reading, a signal will be sent to the equipment user that the air filter needs to be changed. A traditional refrigerant charge indicator requires intrusion into the system to measure the refrigerant high-side and low-side pressures. Once the pressures are known, based on the equipment's refrigerant charging chart? or in most cases, based on the technician's experience? the refrigerant charging status is determined. However, there is a catch: by the time a refrigeration technician is called, most of the refrigerant has already escaped into the atmosphere. The new technology provides a real-time warning so that when, say, 20% of the refrigerant has leaked, the equipment users will be warned, even though the equipment is still functioning properly at rated capacity. Temperature sensors are becoming very accurate and very low in cost, compared with pressure sensors. Using temperature sensors to detect refrigerant charge status is inherently nonintrusive, inexpensive, and accurate. With the addition of two temperature sensors for detecting dirty air filters, the capability of the diagnostic equipment is further enhanced with very little added cost. This report provides laboratory test data on the change of indoor coil refrigerant temperature and subcooling as a function of refrigerant charge for a 2-ton split heat pump system. The data can be used in designing the indicators for refrigerant loss and dirty air filter sensors.

Mei, V.

2003-06-24T23:59:59.000Z

419

Minimum bias and underlying event studies at CDF  

SciTech Connect

Soft, non-perturbative, interactions are poorly understood from the theoretical point of view even though they form a large part of the hadronic cross section at the energies now available. We review the CDF studies on minimum-bias ad underlying event in p{bar p} collisions at 2 TeV. After proposing an operative definition of 'underlying event', we present part of a systematic set of measurements carried out by the CDF Collaboration with the goal to provide data to test and improve the QCD models of hadron collisions. Different analysis strategies of the underlying event and possible event topologies are discussed. Part of the CDF minimum-bias results are also presented: in this sample, that represent the full inelastic cross-section, we can test simultaneously our knowledge of all the components that concur to form hadronic interactions. Comparisons with MonteCarlo simulations are always shown along with the data. These measurements will also contribute to more precise estimates of the soft QCD background of high-p{sub T} observables.

Moggi, Niccolo; /INFN, Bologna

2010-01-01T23:59:59.000Z

420

The elusive minimum viable population size for white sturgeon  

SciTech Connect

Biological conservation of sturgeon populations is a concern for many species. Those responsible for managing the white sturgeon (Acipenser transmontanus) and similar species are interested in identifying extinction thresholds to avoid. Two thresholds that exist in theory are the minimum viable population size (MVP) and minimum amount of suitable habitat. In this paper, we present both model and empirical estimates of these thresholds. We modified a population viability analysis (PVA) model for white sturgeon to include two new Allee mechanisms. Despite this, PVA-based MVP estimates were unrealistically low compared with empirical estimates unless opportunities for spawning were assumed to be less frequent. PVA results revealed a trade-off between MVP and habitat thresholds; smaller populations persisted in longer river segments and vice versa. Our empirical analyses suggested (1) a MVP range based on population trends from 1,194 to 27,700 individuals, and (2) a MVP estimate of 4,000 individuals based on recruitment. Long-term historical population surveys are needed for more populations to pinpoint an MVP based on trends, whereas the available data were sufficient to estimate MVP based on recruitment. Beyond the MVP, we developed a hierarchical model for population status based on empirical data. Metapopulation support was the most important predictor of population health, followed by the length of free-flowing habitat, with habitat thresholds at 26 and 150 km. Together, these results suggest that habitat and connectivity are important determinants of population status that likely influence the site-specific MVP thresholds.

Jager, Yetta [ORNL; Lepla, Ken B. [Idaho Power Company; Van Winkle, Webb [Van Windle Environmental Consulting; James, Mr Brad [Washington Department of Fish and Wildlife; McAdam, Dr Steve [University of British Columbia, Vancouver

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air conditioner minimum" 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

Vermont Air Pollution Control Regulations, Ambient Air Quality...  

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

Ambient Air Quality Standards (Vermont) Vermont Air Pollution Control Regulations, Ambient Air Quality Standards (Vermont) Eligibility Utility Agricultural Investor-Owned Utility...

422

Vsd Oil Free Air Compressor, Vsd Oil Free Air Compressor ...  

U.S. Energy Information Administration (EIA)

Vsd Oil Free Air Compressor, You Can Buy Various High Quality Vsd Oil Free Air Compressor Products from Global Vsd Oil Free Air Compressor Suppliers ...

423

China Ga Air Compressor, China Ga Air Compressor Products ...  

U.S. Energy Information Administration (EIA)

China Ga Air Compressor, China Ga Air Compressor Suppliers and Manufacturers Directory - Source a Large Selection of Ga Air Compressor Products at ...

424

Oil Free Vsd Air Compressor, Oil Free Vsd Air Compressor ...  

U.S. Energy Information Administration (EIA)

Oil Free Vsd Air Compressor, You Can Buy Various High Quality Oil Free Vsd Air Compressor Products from Global Oil Free Vsd Air Compressor Suppliers ...

425

Screw Type Ac Air Compressor Manufacturers, Screw Type Ac Air ...  

U.S. Energy Information Administration (EIA)

Screw Type Ac Air Compressor, Screw Type Ac Air Compressor Manufacturers & Suppliers Directory - Find here Screw Type Ac Air Compressor Traders, ...

426

Air Conditioning and lungs  

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

Air Conditioning and lungs Name: freeman Status: NA Age: NA Location: NA Country: NA Date: Around 1993 Question: What affect does air conditioning have upon the lungs of the...

427

The impact of minimum age of employment regulation on child labor and schooling  

E-Print Network (OSTI)

Promoting minimum age of employment regulation has been a centerpiece in child labor policy for the last 15 years. If enforced, minimum age regulation would change the age profile of paid child employment. Using micro-data ...

Edmonds, Eric V

428

A New Perspective on Recent Global Warming: Asymmetric Trends of Daily Maximum and Minimum Temperature  

Science Conference Proceedings (OSTI)

Monthly mean maximum and minimum temperatures for over 50% (10%) of the Northern (Southern) Hemisphere landmass, accounting for 37% of the global landmass, indicate that the rise of the minimum temperature has occurred at a rate three times that ...

Thomas R. Karl; Richard W. Knight; Kevin P. Gallo; Thomas C. Peterson; Philip D. Jones; George Kukla; Neil Plummer; Vyacheslav Razuvayev; Janette Lindseay; Robert J. Charlson

1993-06-01T23:59:59.000Z

429

Contracting Officer Warrant Requirements Function Experience Minimum Training Continuous Learning  

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

ACMP Flash 2011-62 ACMP Flash 2011-62 Contracting Officer Warrant Requirements Function Experience Minimum Training Continuous Learning GS-1105s with a warrant for purchases up to $25,000 At least 6 months of Government Purchase Card experience Certified to Level I in the ACMP Purchasing Program 80 hours every two years GS-1105s with a warrant for purchases $25,000 up to the simplified acquisition threshold At least 1 year of Government Purchase Card experience Certified to Level II in the ACMP Purchasing Program 80 hours every two years GS-1105s with a warrant for purchases over the simplified acquisition threshold At least 5 years of progressively complex contracting experience Certified to Level III in the ACMP Purchasing Program 80 hours every two years

430

Minimum Energy Dwelling (MED) workbook: an investigation of techniques and materials for energy conscious design  

DOE Green Energy (OSTI)

This workbook is based upon information gathered during the design phase of the Minimum Energy Dwelling. The objective of the project, sponsored by the Southern California Gas Co., Department of Energy, and Mission Viejo is to substantially reduce energy use by the incorporation of energy conservation and solar techniques in a single-family detached dwelling. The Project will demonstrate to builders, as well as to the general public, a number of technological innovations that can, at reasonable cost, be included in a dwelling design. The problem facing Southern California Gas Co., along with most other gas utilities, is ever-decreasing amounts of gas at increasing prices. The dwelling designed has approximately 1,150 ft/sup 2/, consistent with current home-building trends. Through the optimum use of energy-conserving appliances, insulation, window and wall shading, exterior coloring, and thermal mass, the yearly energy usage has been reduced by over 50%. Of the remaining 50% of the energy required for heating, cooling, and domestic hot water, the majority is supplied by the solar-energy system. Three hundred twenty square feet (270 effective) of evacuated tube collector are incorporated into the building structure. The hot water provided by the collectors is used to run an absorption chiller for cooling, the domestic hot water, and the heating system. The remaining energy requirements are met by an auxiliary natural gas energy system and a cool-air-economizer cycle.

Not Available

1977-12-01T23:59:59.000Z

431

Air Pollution- Local Air Quality (Ontario, Canada)  

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

The Air Pollution regulation administered by the Ministry of the Environment enforces compliance to the standards set in the Ontario law. The law is phased in, with portions taking effect in 2010,...

432

The quadratic minimum spanning tree problem: A lower bounding procedure and an efficient search algorithm  

Science Conference Proceedings (OSTI)

In this paper we consider the quadratic minimum spanning tree problem (QMSTP) which is known to be NP-hard. Given a complete graph, the QMSTP consists of finding a minimum spanning tree (MST) where interaction costs between pairs of edges are prescribed. ... Keywords: Lagrangian relaxation, Local search, Quadratic minimum spanning tree problem

Temel ncan; Abraham P. Punnen

2010-10-01T23:59:59.000Z

433

A simple model for evolution of proteins towards the global minimum of free energy  

E-Print Network (OSTI)

A simple model for evolution of proteins towards the global minimum of free energy Tamar Kaffe-Abramovich and Ron Unger Background: Proteins seem to have their native structure in a global minimum of free energy is in the global minimum of free energy. The aim of this study is to investigate such evolutionary processes

Unger, Ron

434

Minimum Multicolored Subgraph Problem in Multiplex PCR Primer Set Selection and  

E-Print Network (OSTI)

Minimum Multicolored Subgraph Problem in Multiplex PCR Primer Set Selection and Population is a common generalization of minimum cost multiplex PCR primer set selection and maximum likeli- hood and its variants model two important bioinformatics problems: minimum cost multiplex PCR primer set

Mandoiu, Ion

435

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

436

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

437

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

438

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

SciTech Connect

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

Not Available

2012-07-01T23:59:59.000Z

439

Thin Air Breathing  

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

Thin Air Breathing Thin Air Breathing Name: Amy Location: N/A Country: N/A Date: N/A Question: Why is it hard to breathe in thin air? What health dangers do mountain climbers face at high altitudes? Replies: Among the obvious dangers of losing ones footing, the oxygen available in the air is considerable less at higher altitudes. If I recall correctly, 21% of the atmosphere at standard temperature and pressure at sea level is composed of oxygen. This is less at higher altitudes. One can lose consciousness and even die in an oxygen deficient environment with changes from oxygen content to lower than 19.5%. This can unfortunate effect can occur within minutes. Dr. Myron The air is not really thin at high altitudes. The problem is that air pressure is lower. As altitude increases, air pressure decreases. In order for your lungs to fill with air, the air pressure in your lungs has to be less than the pressure of the air outside your lungs. Air moves from areas of higher pressure to lower pressure. As your diaphragm (the muscle that separates your chest cavity from your abdominal cavity) moves downward, the size of your chest cavity increases. This decreases the pressure in your chest and air flows in. When the diaphragm is up, it puts pressure on the chest cavity and the pressure in the lungs is greater than outside the lungs. Air flows out. This is an example of Boyle's Law. The movement of the diaphragm is controlled by the brainstem. Anyway-the reason that it is harder for some people to breathe at higher altitudes is that the air pressure differences aren't as great between the inside of the lungs and outside.

440

Design Method for the Heating/Cooling Coil in the AHU Based on Fuzzy Logic - Part Two: Design of the Minimum Heat-Exchanging Unit  

E-Print Network (OSTI)

Considering a heating/cooling coil with adjustable heat-exchange area, an unequal type is put forward in this paper. Aiming at the application of such heat exchanger in an air-handling unit, restriction conditions are given for the minimum heat-exchanging unit in accordance with the requirement of control precision of indoor temperature and humidity. The structure adjustable heat exchanger improved the hydraulic adjusting characteristics of existing air handling units in the respective structure, and overcame the problems of existing air-handling units such as a narrow hydraulic adjusting range due to the rapid-opening performance of the continuous motor-driven value. As a result, such kind of heat exchanger is extremely suitable to fuzzy control.

Zhang, J.; Chen, Y.; Liang, Z.

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air conditioner minimum" 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

New Air Cleaning Strategies for Reduced Commercial Building Ventilation Energy  

SciTech Connect

Approximately ten percent of the energy consumed in U.S. commercial buildings is used by HVAC systems to condition outdoor ventilation air. Reducing ventilation rates would be a simple and broadly-applicable energy retrofit option, if practical counter measures were available that maintained acceptable concentrations of indoor-generated air pollutants. The two general categories of countermeasures are: 1) indoor pollutant source control, and 2) air cleaning. Although pollutant source control should be used to the degree possible, source control is complicated by the large number and changing nature of indoor pollutant sources. Particle air cleaning is already routinely applied in commercial buildings. Previous calculations indicate that particle filtration consumes only 10percent to 25percent of the energy that would otherwise be required to achieve an equivalent amount of particle removal with ventilation. If cost-effective air cleaning technologies for volatile organic compounds (VOCs) were also available, outdoor air ventilation rates could be reduced substantially and broadly in the commercial building stock to save energy. The research carried out in this project focuses on developing novel VOC air cleaning technologies needed to enable energy-saving reductions in ventilation rates. The minimum required VOC removal efficiency to counteract a 50percent reduction in ventilation rate for air cleaning systems installed in the HVAC supply airstream is modest (generally 20percent or less).

Sidheswaran, Meera; Destaillats, Hugo; Sullivan, Douglas P.; Fisk, William J.

2010-10-27T23:59:59.000Z

442

Mitigating the Impacts of Uncontrolled Air Flow on Indoor Environmental Quality and Energy Demand in Non-Residential Buildings  

SciTech Connect

This multi-faceted study evaluated several aspects of uncontrolled air flows in commercial buildings in both Northern and Southern climates. Field data were collected from 25 small commercial buildings in New York State to understand baseline conditions for Northern buildings. Laboratory wall assembly testing was completed at Syracuse University to understand the impact of typical air leakage pathways on heat and moisture transport within wall assemblies for both Northern and Southern building applications. The experimental data from the laboratory tests were used to verify detailed heat and moisture (HAM) simulation models that could be used to evaluate a wider array of building applications and situations. Whole building testing at FSEC's Building Science Laboratory (BSL) systematically evaluated the energy and IAQ impacts of duct leakage with various attic and ceiling configurations. This systematic test carefully controlled all aspects of building performance to quantify the impact of duct leakage and unbalanced flow. The newest features of the EnergyPlus building simulation tool were used to model the combined impacts of duct leakage, ceiling leakage, unbalanced flows, and air conditioner performance. The experimental data provided the basis to validate the simulation model so it could be used to study the impact of duct leakage over a wide range of climates and applications. The overall objective of this project was to transfer work and knowledge that has been done on uncontrolled air flow in non-residential buildings in Florida to a national basis. This objective was implemented by means of four tasks: (1) Field testing and monitoring of uncontrolled air flow in a sample of New York buildings; (2) Detailed wall assembly laboratory measurements and modeling; (3) Whole building experiments and simulation of uncontrolled air flows; and (4) Develop and implement training on uncontrolled air flows for Practitioners in New York State.

Hugh I. Henderson; Jensen Zhang; James B. Cummings; Terry Brennan

2006-07-31T23:59:59.000Z

443

Mitigating the Impacts of Uncontrolled Air Flow on Indoor Environmental Quality and Energy Demand in Non-Residential Buildings  

SciTech Connect

This multi-faceted study evaluated several aspects of uncontrolled air flows in commercial buildings in both Northern and Southern climates. Field data were collected from 25 small commercial buildings in New York State to understand baseline conditions for Northern buildings. Laboratory wall assembly testing was completed at Syracuse University to understand the impact of typical air leakage pathways on heat and moisture transport within wall assemblies for both Northern and Southern building applications. The experimental data from the laboratory tests were used to verify detailed heat and moisture (HAM) simulation models that could be used to evaluate a wider array of building applications and situations. Whole building testing at FSEC's Building Science Laboratory (BSL) systematically evaluated the energy and IAQ impacts of duct leakage with various attic and ceiling configurations. This systematic test carefully controlled all aspects of building performance to quantify the impact of duct leakage and unbalanced flow. The newest features of the EnergyPlus building simulation tool were used to model the combined impacts of duct leakage, ceiling leakage, unbalanced flows, and air conditioner performance. The experimental data provided the basis to validate the simulation model so it could be used to study the impact of duct leakage over a wide range of climates and applications. The overall objective of this project was to transfer work and knowledge that has been done on uncontrolled air flow in non-residential buildings in Florida to a national basis. This objective was implemented by means of four tasks: (1) Field testing and monitoring of uncontrolled air flow in a sample of New York buildings; (2) Detailed wall assembly laboratory measurements and modeling; (3) Whole building experiments and simulation of uncontrolled air flows; and (4) Develop and implement training on uncontrolled air flows for Practitioners in New York State.

Hugh I. Henderson; Jensen Zhang; James B. Cummings; Terry Brennan

2006-07-31T23:59:59.000Z

444

D-Zero Instrument Air System Humidity Transmitter Evaluation  

SciTech Connect

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

Serges, T.J.; /Fermilab

1988-07-15T23:59:59.000Z

445

Simplified configuration for the combustor of an oil burner using a low pressure, high flow air-atomizing nozzle  

DOE Patents (OSTI)

The invention relates to clean burning of fuel oil with air. More specifically, to a fuel burning combustion head using a low-pressure, high air flow atomizing nozzle so that there will be a complete combustion of oil resulting in a minimum emission of pollutants. The improved fuel burner uses a low pressure air atomizing nozzle that does not result in the use of additional compressors or the introduction of pressurized gases downstream, nor does it require a complex design. Inventors:

Butcher, Thomas A. (Port Jefferson, NY); Celebi, Yusuf (Middle Island, NY); Fisher, Leonard (Colrain, MA)

2000-09-15T23:59:59.000Z

446

On the minimum temperature of the quiet solar chromosphere  

E-Print Network (OSTI)

aims: We aim to provide an estimate of the minimum temperature of the quiet solar chromosphere. methods: We perform a 2D radiation-MHD simulation spanning the upper convection zone to the lower corona. The simulation includes non-LTE radiative transfer and {an equation-of-state that includes non-equilibrium ionization of hydrogen and non-equilibrium H_2 molecule formation}. We analyze the reliability of the various assumptions made in our model in order to assess the realism of the simulation. results: Our simulation contains pockets of cool gas with down to 1660 K from 1 Mm up to 3.2 Mm height. It overestimates the radiative heating, and contains non-physical heating below 1660 K. Therefore we conclude that cool pockets in the quiet solar chromosphere might have even lower temperatures than in the simulation, provided that there exist areas in the chromosphere without significant magnetic heating. We suggest off-limb molecular spectroscopy to look for such cool pockets and 3D simulations including a local dy...

Leenaarts, Jorrit; Hansteen, Viggo; Gudiksen, Boris V

2011-01-01T23:59:59.000Z

447

Minimum error discrimination between similarity-transformed quantum states  

Science Conference Proceedings (OSTI)

Using the well-known necessary and sufficient conditions for minimum error discrimination (MED), we extract an equivalent form for the MED conditions. In fact, by replacing the inequalities corresponding to the MED conditions with an equivalent but more suitable and convenient identity, the problem of mixed state discrimination with optimal success probability is solved. Moreover, we show that the mentioned optimality conditions can be viewed as a Helstrom family of ensembles under some circumstances. Using the given identity, MED between N similarity transformed equiprobable quantum states is investigated. In the case that the unitary operators are generating a set of irreducible representation, the optimal set of measurements and corresponding maximum success probability of discrimination can be determined precisely. In particular, it is shown that for equiprobable pure states, the optimal measurement strategy is the square-root measurement (SRM), whereas for the mixed states, SRM is not optimal. In the case that the unitary operators are reducible, there is no closed-form formula in the general case, but the procedure can be applied in each case in accordance to that case. Finally, we give the maximum success probability of optimal discrimination for some important examples of mixed quantum states, such as generalized Bloch sphere m-qubit states, spin-j states, particular nonsymmetric qudit states, etc.

Jafarizadeh, M. A. [Department of Theoretical Physics and Astrophysics, University of Tabriz, Tabriz 51664 (Iran, Islamic Republic of); Institute for Studies in Theoretical Physics and Mathematics, Tehran 19395-1795 (Iran, Islamic Republic of); Research Institute for Fundamental Sciences, Tabriz 51664 (Iran, Islamic Republic of); Sufiani, R. [Department of Theoretical Physics and Astrophysics, University of Tabriz, Tabriz 51664 (Iran, Islamic Republic of); Institute for Studies in Theoretical Physics and Mathematics, Tehran 19395-1795 (Iran, Islamic Republic of); Mazhari Khiavi, Y. [Department of Theoretical Physics and Astrophysics, University of Tabriz, Tabriz 51664 (Iran, Islamic Republic of)

2011-07-15T23:59:59.000Z

448

Indias Credible Minimum Deterrence A Decade Later  

E-Print Network (OSTI)

Deterrence in the most conventional sense implies the making of military threats in order to prevent an adversary from taking aggressive actions (Buzan 1987). According to Barry Buzan (1987: 136), deterrence as a concept purports to stop an unwanted action by the adversary before they occur and encompasses both denial and the possibility of retaliation. The introduction of nuclear weapons into this complex dynamic of deterrence does not stabilise the crisis situation, as conventional wisdom suggests, but makes it even more threatening. The core of nuclear deterrence involves convincing the adversary that the cost of an undesirable action is more than the rewards. This requires a comprehensive understanding of not only the adversarys motives, decision-making processes and objectives, but also ones own capability to influence the calculus of costs and benefits that an adversary attaches to his own belligerence. Therefore, nuclear deterrence also takes into account the credibility of ones own nuclear threat that is aimed at convincing the adversary that his belligerence will be punished by unacceptable damage through nuclear means. It is in the wake of this that India evolved its own nuclear doctrine which seeks to uphold the notion of credible minimum deterrence.

Tanvi Kulkarni; Alankrita Sinha

2011-01-01T23:59:59.000Z

449

Indoor Air Quality Group  

Science Conference Proceedings (OSTI)

... CONTAM has been used at NIST to study the indoor air quality impacts of HVAC systems in single-family residential buildings, ventilation in large ...

2011-10-31T23:59:59.000Z

450

Air Resources Board  

E-Print Network (OSTI)

The Air Resources Board (the Board or ARB) will conduct a public hearing at the time and place noted below to consider amendments to the Verifkztion

unknown authors

2003-01-01T23:59:59.000Z

451

Air Resources Board  

E-Print Network (OSTI)

The Air Resources Board (the Board or ARB) will conduct a public hearing at the time and place noted below to consider amendments to the Verification

unknown authors

2003-01-01T23:59:59.000Z

452

Environmental Quality: Air (Louisiana)  

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

The Department of Environmental Quality regulates air quality in Louisiana. The Department has an established a fee system for funding the monitoring, investigation and other activities required...

453

Air Pollution Project: Scenario  

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

Project Summary HELP Index Summary Scenario Internet Links Student Pages SubjectContent Area: ScienceChemistry, Environment - Air Pollution Target Audience: High school chemistry...

454

Forced air fireplace furnace  

Science Conference Proceedings (OSTI)

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

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

1980-10-28T23:59:59.000Z

455

Movements in air conditioning.  

E-Print Network (OSTI)

??Movements in Air Conditioning is a collection of poems that explores the obstacles inherent in creating a new sense of home in a country that (more)

Hitt, Robert D. (Robert David)

2013-01-01T23:59:59.000Z

456

Air Pollution Controls  

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

Various statutes within the Wisconsin Legislative Documents relate to air pollution control. These statutes describe zoning, permitting, and emissions regulations for hazardous and non-hazardous...

457

Design of RF Conditioner Cavities  

E-Print Network (OSTI)

Energy Research, Office of High Energy and Nuclear Physics,Office of High Energy and Nuclear Physics, Division of High Energy

Govil, R.

2008-01-01T23:59:59.000Z

458

Development of advanced drilling, completion, and stimulation systems for minimum formation damage and improved efficiency: A program overview  

SciTech Connect

The Department of Energy`s (DOE) Natural Gas Resource and Extraction Program consists of industry/government co-sponsored research, development, and demonstration (RD&D) projects, which focus on gas recovery from both conventional and nonconventional resources. The Drilling, Completion, and Stimulation (DCS) Project focuses on advanced, non-damaging technology systems and equipment for improving gas recovery from conventional and nonconventional reservoirs. As operators move from development of current day economically attractive gas-field development to the lower permeability geologic regions of domestic onshore plays, increasing the emphasis on minimum formation damage DCS will permit economic development of gas reserves. The objective of the Project is to develop and demonstrate cost-effective, advanced technology to accelerate widespread use and acceptance of minimum formation damage DCS systems. The goal of this product development effort is to reduce costs and improve the overall efficiency of vertical, directional, and horizontally drilled wells in gas formations throughout the US. The current focus of the Project is on the development of underbalanced drilling technology and minimum formation damage stimulation technology concurrently with the appropriate completion hardware to improve the economics of domestic natural gas field development. Ongoing drilling technology projects to be discussed include development of an electromagnetic measurement while drilling system for directional and horizontal drilling in underbalanced drilling applications and the development of a steerable air percussion drilling system for hard formation drilling and improved penetration rates. Ongoing stimulation technology projects to be discussed include introduction of carbon dioxide/sand fracturing technology for minimal formation damage.

Layne, A.W.; Yost, A.B. II

1994-07-01T23:59:59.000Z

459

Proposal for a Vehicle Level Test Procedure to Measure Air Conditioning Fuel Use  

SciTech Connect

The air-conditioning (A/C) compressor load significantly impacts the fuel economy of conventional vehicles and the fuel use/range of plug-in hybrid electric vehicles (PHEV). A National Renewable Energy Laboratory (NREL) vehicle performance analysis shows the operation of the air conditioner reduces the charge depletion range of a 40-mile range PHEV from 18% to 30% in a worst case hot environment. Designing for air conditioning electrical loads impacts PHEV and electric vehicle (EV) energy storage system size and cost. While automobile manufacturers have climate control procedures to assess A/C performance, and the U.S. EPA has the SCO3 drive cycle to measure indirect A/C emissions, there is no automotive industry consensus on a vehicle level A/C fuel use test procedure. With increasing attention on A/C fuel use due to increased regulatory activities and the development of PHEVs and EVs, a test procedure is needed to accurately assess the impact of climate control loads. A vehicle thermal soak period is recommended, with solar lamps that meet the SCO3 requirements or an alternative heating method such as portable electric heaters. After soaking, the vehicle is operated over repeated drive cycles or at a constant speed until steady-state cabin air temperature is attained. With this method, the cooldown and steady-state A/C fuel use are measured. This method can be run at either different ambient temperatures to provide data for the GREEN-MAC-LCCP model temperature bins or at a single representative ambient temperature. Vehicles with automatic climate systems are allowed to control as designed, while vehicles with manual climate systems are adjusted to approximate expected climate control settings. An A/C off test is also run for all drive profiles. This procedure measures approximate real-world A/C fuel use and assess the impact of thermal load reduction strategies.

Rugh, J. P.

2010-04-01T23:59:59.000Z

460

The Impact of Minimum Quality Standards on Firm Entry, Exit and Product Quality: The Case of the Child Care Market  

E-Print Network (OSTI)

A Theory of Minimum Standards, Journal of Politi- calto Minimum Quality Standards Regulation, NBER working paperDuopoly and Quality Standards, European Economic Review,

Hotz, V. Joseph; Xiao, Mo

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air conditioner minimum" 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

Recirculating electric air filter  

DOE Patents (OSTI)

An electric air filter cartridge has a cylindrical inner high voltage eleode, a layer of filter material, and an outer ground electrode formed of a plurality of segments moveably connected together. The outer electrode can be easily opened to remove or insert filter material. Air flows through the two electrodes and the filter material and is exhausted from the center of the inner electrode.

Bergman, Werner (Pleasanton, CA)

1986-01-01T23:59:59.000Z

462

Portable oven air circulator  

DOE Patents (OSTI)

A portable air circulating apparatus for use in cooking ovens which is used to create air currents in the oven which transfer heat to cooking foodstuffs to promote more rapid and more uniform cooking or baking, the apparatus including a motor, fan blade and housing of metallic materials selected from a class of heat resistant materials.

Jorgensen, Jorgen A. (Bloomington, MN); Nygren, Donald W. (Minneapolis, MN)

1983-01-01T23:59:59.000Z

463

Meeting the Air Leakage  

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

Meeting the Air Leakage Meeting the Air Leakage Requirements of the 2012 IECC The U.S. Department of Energy (DOE) recognizes the enormous potential that exists for improving the energy efficiency, safety and comfort of homes. The newest edition of the International Energy Conservation Code ® (IECC) (2012) sets the bar higher for energy efficiency, and new air sealing requirements are one of the key new provisions. This guide is a resource for understanding the new air leakage requirements in the 2012 IECC and suggestions on how these new measures can be met. It also provides information from Building America's Air Sealing Guide, Best Practices and case studies on homes that are currently meeting the provisions. The 2012 IECC and a few International Residential Code (IRC) requirements are referenced throughout the guide.

464

Minimum Cost Flow Problems with Value-at-Risk and Conditional ...  

E-Print Network (OSTI)

Stochastic minimum cost flow (SMCF) problems have been studied for applica- tions involving random ...... approach to stochastic programming of heating oil.

465

Minimum Bias Measurements with the ATLAS Detector at the CERN Large Hadron Collider  

E-Print Network (OSTI)

efficiency at the Event Filter MBTS trigger efficiency atand counted at the Event Filter trigger level. Any eventsCHAPTER 3. MINIMUM BIAS TRIGGER Event Selection The analysis

Leyton, Michael A.

2009-01-01T23:59:59.000Z

466

Estimate of Technical Potential for Minimum Efficiency Performance Standards in 13 Major World Economies  

E-Print Network (OSTI)

Mexico minimum efficiency performance standard million tons (of CO 2 ) national energyand Mexico, produces the largest savings of all the end uses: 780 TWh. The baseline energy

Letschert, Virginie

2013-01-01T23:59:59.000Z

467

Abatement of Air Pollution: Prohibition of Air Pollution (Connecticut)  

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

All air pollution not otherwise covered by these regulations is prohibited. Stationary sources which cause air pollution must be operated in accordance with all applicable emissions standards and...

468

Abatement of Air Pollution: Prohibition of Air Pollution (Connecticut...  

Open Energy Info (EERE)

DEEP Air Management Department Department of Energy and Environmental Protection Division Environmental Protection Division; Bureau of Air Management Address 79 Elm Street Place...

469

Air ejector augmented compressed air energy storage system  

DOE Patents (OSTI)

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

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

1980-01-01T23:59:59.000Z

470

Feature - Lithium-air Batteries  

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

Develop Lithium-Air Battery Li-air Li-air batteries hold the promise of increasing the energy density of Li-ion batteries by as much as five to 10 times. But that potential will...

471

Air Shower Simulations  

SciTech Connect

Air shower simulations are a vital part of the design of air shower experiments and the analysis of their data. We describe the basic features of air showers and explain why numerical simulations are the appropriate approach to model the shower simulation. The CORSIKA program, the standard simulation program in this field, is introduced and its features, performance and limitations are discussed. The basic principles of hadronic interaction models and some gerneral simulation techniques are explained. Also a brief introduction to the installation and use of CORSIKA is given.

Alania, Marco; Gomez, Adolfo V. Chamorro [Centro de Tecnologias de Informacion y Comunicaciones, Universidad Nacional de Ingenieria, Lima (Peru); Araya, Ignacio J. [Departamento de Astronomia y Astrofisica, Pontificia Universidad Catolica de Chile, Av. Vicuna Mackenna 4860, Santiago (Chile); Huerta, Humberto Martinez; Flores, Alejandra Parra [Facultad de Ciencias Fisico Matematicas, Benemerita Universidad Autonoma de Puebla, Puebla (Mexico); Knapp, Johannes [School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT (United Kingdom)

2009-04-30T23:59:59.000Z

472

Air heating system  

DOE Patents (OSTI)

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

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

1983-03-01T23:59:59.000Z

473

Air Handling Unit Supply Air Temperature Optimization During Economizer Cycles  

E-Print Network (OSTI)

Most air handling units (AHUs) in commercial buildings have an air economizer cycle for free cooling under certain outside air conditions. During the economizer cycle, the outside air and return air dampers are modulated to seek mixing air temperature at supply air temperature setpoint. Mechanical cooling is always required when outside air temperature is higher than the supply air temperature setpoint. Generally the supply air temperature setpoint is set at 55F for space humidity control. Actually the dehumidification is not necessary when outside air dew point is less than 55F. Meanwhile the space may have less cooling load due to envelope heat loss and/or occupant schedule. These provide an opportunity to use higher supply air temperature to reduce or eliminate mechanical cooling and terminal box reheat. On the other hand the higher supply air temperature will require higher air flow as well as higher fan power. Therefore the supply air temperature has to be optimized to minimize the combined energy for fan, cooling and heating energy. In this paper a simple energy consumption model is established for AHU systems during the economizer and then a optimal supply air temperature control is developed to minimize the total cost of the mechanical cooling and the fan motor power. This paper presents AHU system energy modeling, supply air temperature optimization, and simulated energy savings.

Xu, K.; Liu, M.; Wang, G.; Wang, Z.

2007-01-01T23:59:59.000Z

474

Air Quality | Open Energy Information  

Open Energy Info (EERE)

Air Quality Jump to: navigation, search Retrieved from "http:en.openei.orgwindex.php?titleAirQuality&oldid612070" Category: NEPA Resources...

475

Air Carrier Flight Operations  

E-Print Network (OSTI)

Most air carriers operate under a system of prioritized goals including safety, customer service (on-time departures and arrivals) and operating economics. The flight operations department is responsible for the safe and ...

Midkif, Alan H.

476

AIR RESOURCES BOARD Acknowledgements  

E-Print Network (OSTI)

This report was prepared with the assistance and support from other agencies, divisions and offices of the Air Resources Board, and private firms. Staff would especially like to thank the following individuals for their assistance in developing this proposed pathway:

Green Wastes; Green Wastes; Richard Corey; Deputy Executive Officer; Cynthia Marvin Chief; Michael Waugh Chief; Kamal Ahuja; Brian Helmowski; Wes Ingram; Ray Asregadoo (arb; Juliet Bohn (hwma; Richard Boyd (arb; Alicia Chakrabarthy (ebmud; Steven Cliff (arb; Kevin Dickison (ebmud; Jacques Franco (calrecycle

2012-01-01T23:59:59.000Z

477

Breathing zone air sampler  

DOE Patents (OSTI)

A sampling apparatus is provided which comprises a sampler for sampling air in the breathing zone of a wearer of the apparatus and a support for the sampler preferably in the form of a pair of eyeglasses. The sampler comprises a sampling assembly supported on the frame of the eyeglasses and including a pair of sample transport tubes which are suspended, in use, centrally of the frame so as to be disposed on opposite sides of the nose of the wearer and which each include an inlet therein that, in use, is disposed adjacent to a respective nostril of the nose of the wearer. A filter holder connected to sample transport tubes supports a removable filter for filtering out particulate material in the air sampled by the apparatus. The sample apparatus is connected to a pump for drawing air into the apparatus through the tube inlets so that the air passes through the filter.

Tobin, John (Bethel Park, PA)

1989-01-01T23:59:59.000Z

478

air_water.cdr  

Office of Legacy Management (LM)

Office of Legacy Management Weldon Spring Site Air and Water Monitoring 32008 This fact sheet provides information at Weldon Spring, Missouri. This site is managed by the U.S....

479

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)...

480

Building Technologies Office: Current Test Procedure Waivers  

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

2805 72FR71387 121707 Air Conditioners and Heat Pumps, Residential Multi-zone Unitary Small Air Conditioners and Heat Pumps ECR International, Inc. 78FR47681 080613 Heat Pump...

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


481

MidAmerican Energy (Electric) - Residential Energy Efficiency...  

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

Air Conditioners: 25 Central Air Conditioners: 100-200 Heat Pumps: 100-400 Ground-source Heat Pumps: 1000-2000 Desuperheaters: 100 Heat Pump Water Heaters: 100 Water...

482

FREE AIR PRESSURE MEASUREMENTS  

SciTech Connect

Indenter gages, Wiancko gages, and interferometer gages were used to measure air overpressure vs time at essentially ground level stations for both the surface (S) and undprground (U) atomic explosions. For the S Burst several instruments were placed on a line extending from an overpressure region of 13 psi to a region of less than one psi. The air measurements for the U Burst ranged from 32 to 2 psi. (D. L.G.)

Howard, W.J.; Jones, R.D.

1952-02-19T23:59:59.000Z

483

A branch-and-cut algorithm for the minimum labeling Hamiltonian cycle problem and two variants  

Science Conference Proceedings (OSTI)

This paper proposes a mathematical model, valid inequalities and polyhedral results for the minimum labeling Hamiltonian cycle problem. This problem is defined on an unweighted graph in which each edge has a label. The aim is to determine a Hamiltonian ... Keywords: Branch-and-cut, Minimum labeling problem, Traveling salesman problem

Nicolas Jozefowiez; Gilbert Laporte; Frdric Semet

2011-11-01T23:59:59.000Z

484

Two-Point Boundary Value Problems for Curves: The Case of Minimum Free Energy Paths  

E-Print Network (OSTI)

Two-Point Boundary Value Problems for Curves: The Case of Minimum Free Energy Paths corrected.S.A. Abstract The calculation of a minimum free energy path can be considered as a two-point boundary value box solvers. The second paragraph of Section 1 is corrected. Because free energy is defined in terms

Skeel, Robert

485

Minimum Energy Compensation Strategy and Characteristic Analysis for Dynamic Voltage Restorer  

Science Conference Proceedings (OSTI)

The minimum energy compensation strategy and its characteristic for Dynamic Voltage Restorer (DVR) considering the equipments voltage limitation are discussed. The strategy when the injection voltage is under or especially above the voltage limitation ... Keywords: dynamic voltage restorer, minimum energy compensation, compensation strategy, compensation characteristic, voltage limitation

Yingying Liu; Xu Yonghai; Xiao Xiangning; Guo Chunlin

2009-10-01T23:59:59.000Z

486

Fast Algorithms for Specially Structured Minimum Cost Flow Problems with Applications  

Science Conference Proceedings (OSTI)

The objective of the classical minimum cost flow problem is to send units of a good that reside at one or more points in a network (sources or supply nodes) with arc capacities to one or more other points in the network (sinks or demand nodes), incurring ... Keywords: analysis of algorithms, applications, computational complexity, flow algorithms, minimum cost flow problem, networks

Balachandran Vaidyanathan; Ravindra K. Ahuja

2010-11-01T23:59:59.000Z

487

Air Cooling | Open Energy Information  

Open Energy Info (EERE)

Cooling Cooling Jump to: navigation, search Dictionary.png Air Cooling: Air cooling is commonly defined as rejecting heat from an object by flowing air over the surface of the object, through means of convection. Air cooling requires that the air must be cooler than the object or surface from which it is expected to remove heat. This is due to the second law of thermodynamics, which states that heat will only move spontaneously from a hot reservoir (the heat sink) to a cold reservoir (the air). Other definitions:Wikipedia Reegle Air Cooling Air Cooling Diagram of Air Cooled Condenser designed by GEA Heat Exchangers Ltd. (http://www.gea-btt.com.cn/opencms/opencms/bttc/en/Products/Air_Cooled_Condenser.html) Air cooling is limited on ambient temperatures and typically require a

488

InAir: sharing indoor air quality measurements and visualizations  

Science Conference Proceedings (OSTI)

This paper describes inAir, a tool for sharing measurements and visualizations of indoor air quality within one's social network. Poor indoor air quality is difficult for humans to detect through sight and smell alone and can contribute to the development ... Keywords: air quality, domestic technology, environment, health, iphone, persuasive technology, sensors, sustainability

Sunyoung Kim; Eric Paulos

2010-04-01T23:59:59.000Z

489

Local Option - Industrial Facilities and Development Bonds |...  

Open Energy Info (EERE)

Sector Commercial, Industrial, Institutional, Local Government Eligible Technologies Boilers, Building Insulation, CaulkingWeather-stripping, Central Air conditioners, Chillers,...

490

Duquesne Light Company - Residential Energy Efficiency Program...  

Open Energy Info (EERE)

Central Air conditioners, Clothes Washers, Dehumidifiers, Dishwasher, Furnaces, Heat pumps, Lighting, Lighting ControlsSensors, Pool Pumps, Programmable Thermostats,...

491

City of Fort Lauderdale - Smart Watts Rebate Program (Florida...  

Open Energy Info (EERE)

Building Insulation, Central Air conditioners, Doors, Furnaces, Water Heaters, Windows, Photovoltaics, Solar Water Heat, Tankless Water Heaters Active Incentive No...

492

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...

493

A Critical Analysis of Technological Innovation and Economic Development in Southern California's Urban Water Reuse And Recycling Industry  

E-Print Network (OSTI)

and commercial and industrial refrigeration and freezerrefrigeration equipment (except household-type refrigerators, freezers, and air-conditioners) Industrial

Pilip-Florea, Shadrach Jay

2012-01-01T23:59:59.000Z

494

Edison Innovation Clean Energy Manufacturing Fund - Grants and...  

Open Energy Info (EERE)

Sector Commercial, Industrial Eligible Technologies Boilers, Central Air conditioners, Energy Mgmt. SystemsBuilding Controls, Furnaces, Lighting, Anaerobic Digestion, Biomass,...