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Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Air Conditioning  

Science Journals Connector (OSTI)

Air Conditioning ... CHEMISTS and engineers use air conditioning as a valuable tool in more than two hundred industries. ... Air conditioning is a tool with many facets. ...

MARGARET INGELS

1938-02-10T23:59:59.000Z

2

Table HC15.7 Air-Conditioning Usage Indicators by Four Most Populated States, 2005  

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

7 Air-Conditioning Usage Indicators by Four Most Populated States, 2005 7 Air-Conditioning Usage Indicators by Four Most Populated States, 2005 Total.................................................................................. 111.1 7.1 7.0 8.0 12.1 Do Not Have Cooling Equipment.................................... 17.8 1.8 Q Q 4.9 Have Cooling Equipment................................................. 93.3 5.3 7.0 7.8 7.2 Use Cooling Equipment.................................................. 91.4 5.3 7.0 7.7 6.6 Have Equipment But Do Not Use it................................ 1.9 Q N Q 0.6 Type of Air-Conditioning Equipment 1, 2 Central System............................................................. 65.9 1.1 6.4 6.4 5.4 Without a Heat Pump................................................. 53.5 1.1 3.5 5.7 4.9 With a Heat Pump......................................................

3

Table HC6.7 Air-Conditioning Usage Indicators by Number of Household Members, 2005  

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

7 Air-Conditioning Usage Indicators by Number of Household Members, 2005 7 Air-Conditioning Usage Indicators by Number of Household Members, 2005 Total........................................................................ 111.1 30.0 34.8 18.4 15.9 12.0 Do Not Have Cooling Equipment.......................... 17.8 5.4 5.3 2.7 2.5 2.0 Have Cooling Equipment...................................... 93.3 24.6 29.6 15.7 13.4 10.0 Use Cooling Equipment....................................... 91.4 24.0 29.1 15.5 13.2 9.7 Have Equipment But Do Not Use it...................... 1.9 0.6 0.5 Q 0.2 0.4 Type of Air-Conditioning Equipment 1, 2 Central System................................................... 65.9 15.3 22.6 10.7 9.9 7.3 Without a Heat Pump....................................... 53.5 12.5 17.9 8.7 8.2 6.3 With a Heat Pump............................................ 12.3

4

"Table HC11.7 Air-Conditioning Usage Indicators by Northeast Census Region, 2005"  

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

7 Air-Conditioning Usage Indicators by Northeast Census Region, 2005" 7 Air-Conditioning Usage Indicators by Northeast Census Region, 2005" " Million U.S. Housing Units" ,,"Northeast Census Region" ,"U.S. Housing Units (millions)" ,,,"Census Division" ,,"Total Northeast" "Air Conditioning Usage Indicators",,,"Middle Atlantic","New England" "Total",111.1,20.6,15.1,5.5 "Do Not Have Cooling Equipment",17.8,4,2.4,1.7 "Have Cooling Equipment",93.3,16.5,12.8,3.8 "Use Cooling Equipment",91.4,16.3,12.6,3.7 "Have Equipment But Do Not Use it",1.9,0.3,"Q","Q" "Type of Air-Conditioning Equipment1, 2" "Central System",65.9,6,5.2,0.8 "Without a Heat Pump",53.5,5.5,4.8,0.7

5

"Table HC15.7 Air-Conditioning Usage Indicators by Four Most Populated States, 2005"  

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

7 Air-Conditioning Usage Indicators by Four Most Populated States, 2005" 7 Air-Conditioning Usage Indicators by Four Most Populated States, 2005" " Million U.S. Housing Units" ,"Housing Units (millions)","Four Most Populated States" "Air Conditioning Usage Indicators",,"New York","Florida","Texas","California" "Total",111.1,7.1,7,8,12.1 "Do Not Have Cooling Equipment",17.8,1.8,"Q","Q",4.9 "Have Cooling Equipment",93.3,5.3,7,7.8,7.2 "Use Cooling Equipment",91.4,5.3,7,7.7,6.6 "Have Equipment But Do Not Use it",1.9,"Q","N","Q",0.6 "Type of Air-Conditioning Equipment1, 2" "Central System",65.9,1.1,6.4,6.4,5.4

6

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

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

7 Air-Conditioning Usage Indicators by U.S. Census Region, 2005" 7 Air-Conditioning Usage Indicators by U.S. Census Region, 2005" " Million U.S. Housing Units" ,"Housing Units (millions)","U.S. Census Region" "Air Conditioning Usage Indicators",,"Northeast","Midwest","South","West" "Total",111.1,20.6,25.6,40.7,24.2 "Do Not Have Cooling Equipment",17.8,4,2.1,1.4,10.3 "Have Cooling Equipment",93.3,16.5,23.5,39.3,13.9 "Use Cooling Equipment",91.4,16.3,23.4,38.9,12.9 "Have Equipment But Do Not Use it",1.9,0.3,"Q",0.5,1 "Type of Air-Conditioning Equipment1, 2" "Central System",65.9,6,17.3,32.1,10.5 "Without a Heat Pump",53.5,5.5,16.2,23.2,8.7

7

"Table HC13.7 Air-Conditioning Usage Indicators by South Census Region, 2005"  

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

7 Air-Conditioning Usage Indicators by South Census Region, 2005" 7 Air-Conditioning Usage Indicators by South Census Region, 2005" " Million U.S. Housing Units" ,,"South Census Region" ,"U.S. Housing Units (millions)" ,,,"Census Division" ,,"Total South" "Air Conditioning Usage Indicators",,,"South Atlantic","East South Central","West South Central" "Total",111.1,40.7,21.7,6.9,12.1 "Do Not Have Cooling Equipment",17.8,1.4,0.8,0.2,0.3 "Have Cooling Equipment",93.3,39.3,20.9,6.7,11.8 "Use Cooling Equipment",91.4,38.9,20.7,6.6,11.7 "Have Equipment But Do Not Use it",1.9,0.5,"Q","Q","Q" "Type of Air-Conditioning Equipment1, 2"

8

Solar Heating and Air Conditioning  

Science Journals Connector (OSTI)

...given of the status of solar fired air conditioning...to an approach to cool storage in solar air conditioning systems...an assessment of cool storage for reducing peak electrical...rolling cylinder thermal energy storage device for compact...

1980-01-01T23:59:59.000Z

9

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

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

7 Air-Conditioning Usage Indicators by Owner-Occupied Housing Unit, 2005" 7 Air-Conditioning Usage Indicators by Owner-Occupied Housing Unit, 2005" " Million U.S. Housing Units" ,," Owner-Occupied Housing Units (millions)","Type of Owner-Occupied Housing Unit" ,"U.S. Housing Units (millions)" ,,,"Single-Family Units",,"Apartments in Buildings With--" "Air Conditioning Usage Indicators",,,"Detached","Attached","2 to 4 Units","5 or More Units","Mobile Homes" "Total",111.1,78.1,64.1,4.2,1.8,2.3,5.7 "Do Not Have Cooling Equipment",17.8,11.3,9.3,0.6,"Q",0.4,0.9 "Have Cooling Equipment",93.3,66.8,54.7,3.6,1.7,1.9,4.8 "Use Cooling Equipment",91.4,65.8,54,3.6,1.7,1.9,4.7

10

Natural Air-Conditioning Systems  

Science Journals Connector (OSTI)

Recent research in summer air conditioning utilizing natural sources of coolness* are discussed. These systems are classified according to the sources of coolness, the modes of heat transfer and airflow, and t...

Mehdi N. Bahadori

1986-01-01T23:59:59.000Z

11

A New Approach to Industrial Air Conditioning  

E-Print Network [OSTI]

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

Gravenstreter, T.

1982-01-01T23:59:59.000Z

12

Air Conditioning | Department of Energy  

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

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

13

Central Air Conditioning | Department of Energy  

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

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,

14

High Energy Efficiency Air Conditioning  

SciTech Connect (OSTI)

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

Edward McCullough; Patrick Dhooge; Jonathan Nimitz

2003-12-31T23:59:59.000Z

15

Air-Conditioning Basics | Department of Energy  

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

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.

16

Lab Breakthrough: Desiccant Enhanced Evaporative Air Conditioning |  

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

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

17

Lab Breakthrough: Desiccant Enhanced Evaporative Air Conditioning |  

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

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.

18

Air Conditioning Heating and Refrigeration Institute Comment  

Broader source: Energy.gov [DOE]

These comments are submitted by the Air-Conditioning, Heating, and Refrigeration Institute (AHRI) in response to the U.S. Department of Energys (DOE) notice in the July 3, 2014 Federal Register...

19

Alternatives to Electric Air Conditioning Systems  

E-Print Network [OSTI]

The rapid escalation of electricity prices has created an opportunity to re-introduce gas-fired air conditioning systems to the commercial building market. In 1985 Gas Research Institute initiated a program to develop an advanced gas engine...

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

1988-01-01T23:59:59.000Z

20

Changing patterns of air conditioning in Japan  

Science Journals Connector (OSTI)

Japanese air conditioning patterns have changed significantly over the past 30 years. The changes can be linked to increasing affluence and the consequent changes Japanese life patterns, but also to changes in...

Harold Wilhite; Hidetoshi Nakagami

1999-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

Heating, Ventilation and Air Conditioning Efficiency  

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

Presented By: WALTER E. JOHNSTON, PE Presented By: WALTER E. JOHNSTON, PE CEM, CEA, CLEP, CDSM, CPE Air Conditioning (HVAC) system is to provide and maintain a comfortable environment within a building for the occupants or for the process being conducted Many HVAC systems were not designed with energy efficiency as one of the design factors 3 Air Air is the major conductor of heat. Lack of heat = air conditioning OR 4 Btu - Amount of heat required to raise one pound of water 1 F = 0.252 KgCal 1 Pound of Water = About 1 Pint of Water ~ 1 Large Glass 1 Kitchen Match Basics of Air Conditioning = 1 Btu 5 = 6 Low Cost Cooling Unit 7 8 Typical Design Conditions 75 degrees F temperature 50% relative humidity 30 - 50 FPM air movement

22

Alternative Refrigerants for Building Air Conditioning  

E-Print Network [OSTI]

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

Bivens, D. B.

1996-01-01T23:59:59.000Z

23

Seawater Air Conditioning for Downtown Engineering Project Manager  

E-Print Network [OSTI]

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

Frandsen, Jannette B.

24

Section 38 - HVAC (Heating, Ventilation, Air Conditioning)  

Science Journals Connector (OSTI)

The term HVAC is an acronym for Heating, Ventilation (and) Air Conditioning, the industry term for any of various efforts to control conditions in a building or other enclosed area to improve comfort and efficiency. A closely related section is Refrigeration, which follows this one. Some contemporary HVAC techniques have ancient roots. Early forms of central heating and solar home heating were in use in Rome in the first century A.D. The earliest use of glass in windows (as opposed to a covering of wood, cloth, or hide, or simply an opening) is also attributed to the Romans at this same time. The first known use of solar-oriented building design in North America dates back to about the year 1050; i.e., the cliff dwellings built by the Anasazi (Ancient Pueblo) people of the Colorado Plateau area. Geothermal district heating was employed as early as the 1300s, in the Auvergne region of southern France. The foundation for modern central heating was established in the 1700s, first in England and then in France. The 1800s saw significant advances in the use of water heaters, especially the first automatic storage water heater (Edwin Ruud, 1889) and the first commercial solar water heater (Clarence Kemp, 1891). In comparison with heating, cooling technology was late in developing. The first successful method of producing ice occurred in 1851, and it was not until 1902 that Willis Haviland Carrier designed the first industrial air-conditioning system. His Carrier Air Conditioning Corporation would go on to develop air-conditioning systems for stores and theaters (1924) and for residential buildings (1928). Carrier remains the global leader in air conditioner production. The first air-conditioned automobile was produced by Packard in 1939. Recent entries in this section emphasize the use of alternative energy sources in heating and cooling, such as solar, photovoltaic, geothermal, and fuel cells. These advances include the ground-source heat pump, the Trombe wall, the heat pipe, and the PV/thermal hybrid system.

Cutler J. Cleveland; Christopher Morris

2014-01-01T23:59:59.000Z

25

Innovative Systems for Solar Air Conditioning of Buildings  

E-Print Network [OSTI]

Solar air conditioning is an attractive technology to achieve comfortable room conditions, especially in hot and sunny climates. In particular air conditioning systems based on sorption technologies offer several advantages as they can be designed...

Kessling, W.; Peltzer, M.

2004-01-01T23:59:59.000Z

26

Energy Conservation of Air Conditioning Systems in Large Public Buildings  

E-Print Network [OSTI]

with the heating characteristics of the exterior -protected construction, the set value of the temperature of the air-conditioning, the lectotype of the Central air-conditioning system, the regulation and the modification of the transmission and distribution system...

Liu, P.; Li, D.

2006-01-01T23:59:59.000Z

27

STATE OF CALIFORNIA ICE STORAGE AIR CONDITIONING (ISAC) UNITS  

E-Print Network [OSTI]

cooling with the compressor). Yes No #12;STATE OF CALIFORNIA ICE STORAGE AIR CONDITIONING (ISAC) UNITS CECSTATE OF CALIFORNIA ICE STORAGE AIR CONDITIONING (ISAC) UNITS CEC-CF-6R-MECH-08 (Revised 08/09) CALIFORNIA ENERGY COMMISSION INSTALLATION CERTIFICATE CF-6R-MECH-08 Ice Storage Air Conditioning (ISAC) Units

28

Alternative non-CFC mobile air conditioning  

SciTech Connect (OSTI)

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

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

1992-09-01T23:59:59.000Z

29

Using Modelica for Physical Modeling of Air-Conditioning Systems  

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

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

30

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

SciTech Connect (OSTI)

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

31

Direct Digital Control in Air Conditioning Systems for Energy Efficiency  

E-Print Network [OSTI]

the function and the level of the building, but also save energy. At present, air-conditioning design in internal commercial buildings is becoming more complex and enormous. The proportion of air conditioning systems in the whole building is getting larger...

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

2006-01-01T23:59:59.000Z

32

Heating, Ventilation, and Air Conditioning Renovations | Department of  

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

Heating, Ventilation, and Air Conditioning Renovations Heating, Ventilation, and Air Conditioning Renovations Heating, Ventilation, and Air Conditioning Renovations October 16, 2013 - 4:49pm Addthis Renewable Energy Options for HVAC Renovations Geothermal Heat Pumps (GHP) Solar Water Heating (SWH) Biomass Passive Solar Heating Biomass Heating Solar Ventilation Air Preheating Federal building renovations that encompass the heating, ventilation, and air conditioning (HVAC) systems in a facility provide a range of renewable energy opportunities. The primary technology option for HVAC renovations is geothermal heat pumps (GHP). Other options include leveraging a solar water heating (SWH) system to offset heating load or using passive solar heating or a biomass-capable furnace or boiler. Some facilities may also take

33

NREL: Vehicle Ancillary Loads Reduction - Air Conditioning and Emissions  

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

Conditioning and Emissions Conditioning and Emissions Air conditioning and indirect emissions go together in the sense that when a vehicle's air conditioning system is in use, fuel economy declines. When more petroleum fuel is burned, more pollution and greenhouse gases are emitted. An additional, "direct" source of greenhouse gas emissions is the refrigerant used in air conditioning. Called HFC-134a, this pressurized gas tends to seep through tiny openings and escapes into the atmosphere. It can also escape during routine service procedures such as system recharging. NREL's Vehicle Ancillary Loads Reduction team applied its vehicle systems modeling expertise in a study to predict fuel consumption and indirect emissions resulting from the use of vehicle air conditioning. The analysis

34

Reducing Air-Conditioning System Energy Using a PMV Index  

E-Print Network [OSTI]

ICEBO2006, Shenzhen, China Maximize Comfort: Temperature, Humidity and IAQ Vol.I-4-1 Reducing Air-Conditioning System Energy Using a PMV Index Hui Li Qingfan Zhang Associate professor...

Li, H.; Zhang, Q.

2006-01-01T23:59:59.000Z

35

Requirements for Determining Refrigerant Charge Residential Air Conditioning Measures  

E-Print Network [OSTI]

Requirements for Determining Refrigerant Charge Residential Air Conditioning Measures Improved Refrigerant Charge Purpose Component packages require in some climate zones that split system air refrigerant charge. For the performance method, the proposed design is modeled with less efficiency

36

Approaches to Selecting Design Temperatures for Air-Conditioning  

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

Approaches to Selecting Design Temperatures for Air-Conditioning Approaches to Selecting Design Temperatures for Air-Conditioning Speaker(s): Eric Peterson Date: July 7, 2005 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Philip Haves Edward A. Arens The presentation will describe and compare the methods of determining cooling design conditions used by ASHRAE and the Australian Institute of Refrigeration, Air-Conditioning and Heating. A case study based on weather data for Brisbane will be used to illustrate the issues that arise. One issue is the usefulness of the 3-hourly temperature observations archived in International Weather Office records compared to the hourly observations required by the ASHRAE method. Another issue is the use of daily maxima, which have been archived for over 100 years at many Australian locations. Daily data can easily be used to find trends

37

E-Print Network 3.0 - air-conditioning system driven Sample Search...  

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

(3-0-3) Summary: and design of air-conditioning, heating, and refrigeration systems; including consideration of vapor... ME 4321 Refrigeration and Air Conditioning...

38

New Method Gives Precise Control in Air Conditioning  

Science Journals Connector (OSTI)

The Niagara "Controlled Humidity Method" is a new system of air conditioning giving complete control of temperature and relative humidity, holding constant conditions or varying them at the will of the user. ... A condition of 15 grains o f moisture per pound of air at 85 dcg. ...

1950-01-09T23:59:59.000Z

39

New Method Gives Precise Control in Air Conditioning  

Science Journals Connector (OSTI)

The Niagara "Controlled Humidity Method" is a new system of air conditioning giving complete control of temperature and relative humidity, holding constant conditions or varying them at the will of the user. ... A condition of 15 grains of moisture per pound of air at 85 deg. ...

1950-02-13T23:59:59.000Z

40

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

E-Print Network [OSTI]

Date | 1Refrigeration and Air Conditioning EMA Education and Training #12;Date | 2Refrigeration operating pressure (MOP) 5. De-humidifying (Te control) 6. Defrost funtions 7. Loss of charge detection (LOC control) 6. Defrost funtions 7. Loss of charge detection (LOC) 8. Bleed function 9. Sensor placement tips

Oak Ridge National Laboratory

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

Study of thermoelectric technology for automobile air conditioning  

SciTech Connect (OSTI)

An analytical study was conducted to determine the feasibility of employing thermoelectric (TE) cooling technology in automobile air conditioners. The study addressed two key issues -- power requirements and availability of thermoelectric materials. In this paper, a mathematical model was developed to predict the performance of TE air conditioners and to analyze power consumption. Results show that the power required to deliver a cooling capacity of 4 kW (13,80 Btu/h) in a 38{degree}C (100{degree}F) environment will be 9.5 kW electric. Current TE modules suitable for air conditioning are made of bismuth telluride. The element tellurium is expected to be in short supply if TE cooling is widely implemented for auto air conditioning; some options available in this regard were studied and presented in this paper.

Mathiprakasam, B.; Heenan, P. (Midwest Research Inst., Kansas City, MO (United States)); Mei, V.C.; Chen, F.C. (Oak Ridge National Lab., TN (United States))

1991-01-01T23:59:59.000Z

42

Solar air-conditioning-active, hybrid and passive  

SciTech Connect (OSTI)

After a discussion of summer air conditioning requirements in the United States, active, hybrid, and passive cooling systems are defined. Active processes and systems include absorption, Rankine cycle, and a small variety of miscellaneous systems. The hybrid solar cooling and dehumidification technology of desiccation is covered as well as evaporative cooling. The passive solar cooling processes covered include convective, radiative and evaporative cooling. Federal and state involvement in solar cooling is then discussed. (LEW)

Yellott, J. I.

1981-04-01T23:59:59.000Z

43

Air-Conditioning Systems Simulate World-Wide Climates  

Science Journals Connector (OSTI)

Air-Conditioning Systems Simulate World-Wide Climates ... WEATHER conditions equivalent to those in any part of the world can be simulated in a four-compartment test box set up at State College, Penna., by the U. S. Department of Agriculture's Regional Pasture Research Laboratory in its work to develop better pastures. ... Three heavily insulated doors permit access to each compartment; an inner door keeps conditioned air in the box from rushing out when the main door is opened. ...

1941-10-25T23:59:59.000Z

44

Fetz Plumbing, Heating & Air Conditioning | Open Energy Information  

Open Energy Info (EERE)

Fetz Plumbing, Heating & Air Conditioning Fetz Plumbing, Heating & Air Conditioning Jump to: navigation, search Name Fetz Plumbing, Heating & Air Conditioning Address 115 Washington Street - P.O. Box 516 Place Urbana, Ohio Zip 43078 Sector Efficiency, Geothermal energy, Services, Solar Product Installation; Maintenance and repair Phone number 937-652-1136 Website http://fetzphc.com Coordinates 40.108862°, -83.757291° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.108862,"lon":-83.757291,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

45

Magnetic Refrigeration Technology for High Efficiency Air Conditioning  

SciTech Connect (OSTI)

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

46

Liquid over-feeding air conditioning system and method  

DOE Patents [OSTI]

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

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

1993-09-21T23:59:59.000Z

47

Weatherking Heating & Air conditioning | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit with form History Facebook icon Twitter icon » Weatherking Heating & Air conditioning Jump to: navigation, search Name Weatherking Heating & Air conditioning Address 51 Meadow Lane Place Northfield, Ohio Zip 44067 Sector Buildings, Efficiency, Geothermal energy, Renewable Energy, Services Product Business and legal services; Energy audits/weatherization; Energy provider: power production;Energy provider: wholesale;Engineering/architectural/design;Installation;Investment/finances;Maintenance and repair; Retail product sales and distribution Phone number 330-908-0281 Website http://www.weatherking1.com Coordinates 41.3340869°, -81.530299° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.3340869,"lon":-81.530299,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

48

E-Print Network 3.0 - air conditioning maintenance Sample Search...  

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

Last Updated: 41702 Summary: , including refrigeration, air conditioning, heating systems, ventilating fans, roof ventilators, exhaust fans... : Use of mechanical equipment...

49

Influence of air conditioning management on heat island in Paris air street temperatures  

E-Print Network [OSTI]

Influence of air conditioning management on heat island in Paris air street temperatures Brice 2012 Available online 13 March 2012 Keywords: Air conditioning Heat island mitigation Urban heat island killer'', is exacerbated in urban areas owing to the heat island effect. Air conditioning (A/C) is a key

Ribes, Aurélien

50

Energy audit case studies IIair conditioning (cooling) systems  

Science Journals Connector (OSTI)

This paper discusses a novel methodology for determination of the efficiencies of each segment in a centralized air conditioning (A/C) plant. The methodology is useful analytical tool in energy audit where it can be used for decision support for evolution of energy conservation measures and techno-economic evaluation of the various options. The procedure is applied to three A/C plants of capacity range from 50 to 500 TR. Losses in chilled air ducts and cycling losses in the refrigerant circuit are identified to be the major causes for decrease in the efficiency and capacity under rating of the systems. Effective controls and insulation of air ducts: have been shown to be the most cost effective solutions to improve the energy efficiency of the A/C plants. The generalized experimental data on overall performance of sixteen A/C plants is also provided.

M Siddhartha Bhatt

2000-01-01T23:59:59.000Z

51

Investigation of residential central air conditioning load shapes in NEMS  

SciTech Connect (OSTI)

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

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

2002-05-01T23:59:59.000Z

52

A novel air-conditioning system for proactive power demand response to smart grid  

Science Journals Connector (OSTI)

Abstract Power demand response is considered as one of the most promising solutions in relieving the power imbalance of an electrical grid that results a series of critical problems to the gird and end-users. In order to effectively make use of the demand response potentials of buildings, this paper presents a novel air-conditioning system with proactive demand control for daily load shifting and real time power balance in the developing smart grid. This system consists of a chilled water storage system (CWS) and a temperature and humidity independent control (THIC) air-conditioning system, which can significantly reduce the storage volume of the chilled water tank and effectively enable a building with more flexibility in changing its electricity usage patterns. The power demand of the proposed air-conditioning system can be flexibly controlled as desired by implementing two types of demand response strategies: demand side bidding (DSB) strategy and demand as frequency controlled reserve (DFR) strategy, in respond to the day-ahead and hour-ahead power change requirements of the grid, respectively. Considerable benefits (e.g., energy and cost savings) can be achieved for both the electricity utilities and building owners under incentive pricing or tariffs. A case study is conducted in a simulation platform to demonstrate the application of the proposed system in an office building.

Chengchu Yan; Xue Xue; Shengwei Wang; Borui Cui

2014-01-01T23:59:59.000Z

53

E-Print Network 3.0 - air-conditioning units part Sample Search...  

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

fans... : Use of mechanical equipment such as refrigeration, air conditioning, heating systems, ventilating fans... -handling units and mechanical, compressed air, and electric ......

54

E-Print Network 3.0 - air conditioning hvac Sample Search Results  

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

systems play an important role in providing comfort in residential, commercial... of Heating, Refrigerating, and Air-Conditioning Engineers. Batterman S. and Burge H. 1995. "HVAC...

55

E-Print Network 3.0 - air-conditioning systems based Sample Search...  

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

INVENTION, APPLICATION NO. 61297,958 OF 25 JAN 2010 Summary: for Efficient Heating, Cooling, Refrigeration, and Air Conditioning BY MILIVOJE M. KOSTIC, SYCAMORE, IL......

56

New Development of Simulation Methods on Refrigeration and Air Conditioning Equipments  

Science Journals Connector (OSTI)

Development status of classical simulation technology and application status of artificial intelligence on refrigeration and air conditioning equipments were introduced. The new concept of intelligence simulat...

Cao Wensheng

2011-01-01T23:59:59.000Z

57

E-Print Network 3.0 - air-conditioned domestic buildings Sample...  

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

water chillers will contain more than 3 kg. If information... , air conditioning and heat pump technology. However, certain fire protection equipment that contains F......

58

Impact of Vehicle Air-Conditioning on Fuel Economy, Tailpipe Emissions, and Electric Vehicle Range: Preprint  

SciTech Connect (OSTI)

Vehicle air-conditioning can significantly impact fuel economy and tailpipe emissions of conventional and hybrid electric vehicles and reduce electric vehicle range. In addition, a new US emissions procedure, called the Supplemental Federal Test Procedure, has provided the motivation for reducing the size of vehicle air-conditioning systems in the US. The SFTP will measure tailpipe emissions with the air-conditioning system operating. Current air-conditioning systems can reduce the fuel economy of high fuel-economy vehicles by about 50% and reduce the fuel economy of today's mid-sized vehicles by more than 20% while increasing NOx by nearly 80% and CO by 70%.

Farrington, R.; Rugh, J.

2000-09-22T23:59:59.000Z

59

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

E-Print Network [OSTI]

, indirect refrigeration systems renews interest as they enable to notably reduce the use of environmental the refrigeration applications to the air-conditioning systems. However, this kind of process only remainsRHEOLOGICAL STUDY OF TWO-PHASE SECONDARY FLUIDS FOR REFRIGERATION AND AIR CONDITIONING. Mylène

Boyer, Edmond

60

Investigating the Performance of Solar Air Conditioning Motivation/Background Findings  

E-Print Network [OSTI]

Investigating the Performance of Solar Air Conditioning Motivation/Background Findings Two Building-thermal collectors We investigated 3 types of solar cooling technologies: · Air conditioning consumes 10% of all conditioning can reduce energy consumption, only if paired with a suitable system · Conventional office air

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

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

E-Print Network [OSTI]

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

Khalil, E. E.

2010-01-01T23:59:59.000Z

62

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

E-Print Network [OSTI]

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

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

2006-01-01T23:59:59.000Z

63

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

Science Journals Connector (OSTI)

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

Lim Chin Haw; Kamaruzzaman Sopian; Yusof Sulaiman

2009-02-01T23:59:59.000Z

64

"Table HC11.6 Air Conditioning Characteristics by Northeast Census Region, 2005"  

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

6 Air Conditioning Characteristics by Northeast Census Region, 2005" 6 Air Conditioning Characteristics by Northeast Census Region, 2005" " Million U.S. Housing Units" ,,"Northeast Census Region" ,"U.S. Housing Units (millions)" ,,,"Census Division" ,,"Total Northeast" "Air Conditioning Characteristics",,,"Middle Atlantic","New England" "Total",111.1,20.6,15.1,5.5 "Do Not Have Cooling Equipment",17.8,4,2.4,1.7 "Have Coolling Equipment",93.3,16.5,12.8,3.8 "Use Cooling Equipment",91.4,16.3,12.6,3.7 "Have Equipment But Do Not Use it",1.9,0.3,"Q","Q" "Air-Conditioning Equipment1, 2 " "Central System",65.9,6,5.2,0.8 "Without a Heat Pump",53.5,5.5,4.8,0.7

65

"Table HC13.6 Air Conditioning Characteristics by South Census Region, 2005"  

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

6 Air Conditioning Characteristics by South Census Region, 2005" 6 Air Conditioning Characteristics by South Census Region, 2005" " Million U.S. Housing Units" ,,"South Census Region" ,"U.S. Housing Units (millions)" ,,,"Census Division" ,,"Total South" "Air Conditioning Characteristics",,,"South Atlantic","East South Central","West South Central" "Total",111.1,40.7,21.7,6.9,12.1 "Do Not Have Cooling Equipment",17.8,1.4,0.8,0.2,0.3 "Have Cooling Equipment",93.3,39.3,20.9,6.7,11.8 "Use Cooling Equipment",91.4,38.9,20.7,6.6,11.7 "Have Equipment But Do Not Use it",1.9,0.5,"Q","Q","Q" "Air-Conditioning Equipment1, 2 "

66

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

E-Print Network [OSTI]

ICEBO2006, Shenzhen, China Co ntrol Systems for Energy Efficiency and Comfort, Vol. V-5-2 Analysis of the Diagnostic Methods of the Performance Failure of Heating and Air Conditioning Systems Lianyou LI Zhihong ZHANG Yong...

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

2006-01-01T23:59:59.000Z

67

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

Broader source: Energy.gov [DOE]

These comments are submitted by the Air-Conditioning, Heating, and Refrigeration Institute (AHRI) in response to the U.S. Department of Energys (DOE) notice in the August 8, 2012 Federal Register...

68

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

E-Print Network [OSTI]

ICEBO2006, Shenzhen, China Renewable Energy Resources and a Greener Future, Vol.VIII-8-1 Economic Analysis and Comparison of Waste Water Resource Heat Pump Heating and Air-conditioning System Chunlei Zhang Suilin Wang Hongbing Chen...

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

2006-01-01T23:59:59.000Z

69

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

E-Print Network [OSTI]

There are a number of methods used to estimate the effectiveness of air conditioning equipment in handling loads. Full hourly computer simulations are probably the most accurate, but lack flexibility and are more cumbersome to use than more compact...

Cohen, B. M.

1998-01-01T23:59:59.000Z

70

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

E-Print Network [OSTI]

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

Zhu, H.

2006-01-01T23:59:59.000Z

71

Multi-Domain Modeling and Simulation of Automotive Air Conditioning System Based On Modelica  

Science Journals Connector (OSTI)

The automotive air conditioning (AC) systems are complex systems where two-phase flow, pneumatic, mechanical and electrical components are coupled. Such systems coupled with various physical domains have great...

Jing Li; Yunqing Zhang

2013-01-01T23:59:59.000Z

72

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

E-Print Network [OSTI]

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

Wetter, Michael

2010-01-01T23:59:59.000Z

73

Demand response: a strategy to address residential air-conditioning peak load in Australia  

Science Journals Connector (OSTI)

Rapid growth in electricity network peak demand is increasing pressure for new investment which may be used for only a few hours a year. Residential air-conditioning is widely believed to be the prime cause of...

Robert Smith; Ke Meng; Zhaoyang Dong

2013-12-01T23:59:59.000Z

74

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

E-Print Network [OSTI]

"Flywheel Cooling" utillzes the natural cooling processes of evaporation, ventilation and air circulation. These systems are providing low-cost cooling for distribution centers, warehouses, and other non air-conditioned industrial assembly plants...

Abernethy, D.

75

Research on Solar High-Temperature Absorption Air-Conditioning Systems  

Science Journals Connector (OSTI)

This paper studies the characteristics and performance of solar higher-temperature absorption air conditioning systems which employed linear concentrating collectors and double-effect absorption chillers. A solar...

Guoqing Yu; Jinhua Tang; Zhijun Zou

2009-01-01T23:59:59.000Z

76

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

E-Print Network [OSTI]

This paper describes an analysis of air conditioning performance under hot and humid tropical climate conditions appropriate to the Association of South East Asian Nations (ASEAN) countries. This region, with over 280 million people, has one...

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

1988-01-01T23:59:59.000Z

77

E-Print Network 3.0 - automative air-conditioning systems Sample...  

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

systems Page: << < 1 2 3 4 5 > >> 1 PLEASE HELP SAVE ENERGY Learn how to control the heating system for your room. Summary: & SW Heat & air conditioning control Cary E & NE &...

78

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

E-Print Network [OSTI]

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

Vliet, G. C.

1994-01-01T23:59:59.000Z

79

Development and modelling of a solar assisted liquid desiccant dehumidification air-conditioning system  

Science Journals Connector (OSTI)

This paper presents the development and simulation of an advanced solar assisted liquid desiccant dehumidification air-conditioning system for ... regenerator, and an array of flat plate solar collectors. The sys...

Aqeel Kareem Mohaisen; Zhenjun Ma

2014-09-01T23:59:59.000Z

80

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

E-Print Network [OSTI]

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

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

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

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

E-Print Network [OSTI]

DIRECT-EXPANSION AIR-CONDITIONING SYSTEM PERFORMANCE IN LOW HUMIDITY APPLICATIONS: A CASE STUDY MUKESH K. KHATTAR, P.E. DENNIS KEEBAUGH, P.E. Senior Systems Engineer Senior Research Engineer Florida Solar Energy Center Shenandoah Solar Center... warehouse. The flat gravel roof is exposed to sun. The 16' ceiling is insulated with two inch spray foam. Entrance to the warehouse is through sealed and insulated doors located on the west partition wall. The air -conditioning sys tem on this leased...

Khattar, M. K.; Keebaugh, D.

1987-01-01T23:59:59.000Z

82

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

E-Print Network [OSTI]

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

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

2006-01-01T23:59:59.000Z

83

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

E-Print Network [OSTI]

At present, regulation of water flow by means of pump frequency conversion is one of the major methods for power-saving in central air conditioning systems. In this article, optimization regulation for central air conditioning system on the basis...

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

2006-01-01T23:59:59.000Z

84

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

E-Print Network [OSTI]

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

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

2006-01-01T23:59:59.000Z

85

Aggregated Modeling and Control of Air Conditioning Loads for Demand Response  

E-Print Network [OSTI]

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

Zhang, Wei

86

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

E-Print Network [OSTI]

ICEBO2006, Shenzhen, China Control Systems for Energy Efficiency and Comfort, Vol. V-2-2 Theoretical Study of a Novel Control Method of VAV Air-conditioning System Based on MATLAB Zhigang Shi Songtao Hu Gang Wang Angui Li Xi?An University...

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

2006-01-01T23:59:59.000Z

87

Modeling and Control of Aggregated Air Conditioning Loads Under Realistic Conditions  

E-Print Network [OSTI]

strategy is designed to track a desired demand curve and to ensure a stable and smooth response. I for a large fraction of electric demand. HVAC (Heating, Ventilation and air conditioning) systems and water heaters are examples of TCLs. They use local hysteresis control to maintain either air or water

Zhang, Wei

88

Radon Mitigation in Schools Utilising Heating, Ventilating and Air Conditioning Systems  

Science Journals Connector (OSTI)

......and Air Conditioning Engineers (ASHRAE) standard Ventilation for Acceptable Indoor Air Quality...Two case studies are presented where HVAC technology was implemented for controlling...system in a two-storey building. The HVAC system's controls were restored and modified......

G. Fisher; B. Ligman; T. Brennan; R. Shaughnessy; B.H. Turk; B. Snead

1994-12-01T23:59:59.000Z

89

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

E-Print Network [OSTI]

conservation, and it is urgent. At the same time, the energy consumption about air-conditioning of buildings continues to increase and the new wind energy accounts for 4%~12% of the buildings total energy consumption [1]. A heat recovery system for air...

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

2006-01-01T23:59:59.000Z

90

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

E-Print Network [OSTI]

, and the ceiling cooling system deals with the other part of sensible loads in the air-conditioned zone, so that the condensation on radiant panels and the insufficiency of cooling capacity can be avoided. The cooling water at 18? used in the cooling coils...

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

2006-01-01T23:59:59.000Z

91

Test and Reconstruction of Air Conditioning System in a Hotel Lobby  

E-Print Network [OSTI]

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

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

2006-01-01T23:59:59.000Z

92

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

E-Print Network [OSTI]

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

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

93

A heuristic predictive logic controller applied to hybrid solar air conditioning plant  

Science Journals Connector (OSTI)

This paper shows the development of a heuristic predictive logic controller (HPLoC) applied to a solar air conditioning plant. The plant uses two energy sources, solar and gas, in order to warm up the water. The hot water feeds a single-effect absorption ...

Darine Zambrano; Winston Garca-Gabn; Eduardo F. Camacho

2007-04-01T23:59:59.000Z

94

Experimental Tests and Predictive Model of an Adsorptive Air Conditioning Unit  

Science Journals Connector (OSTI)

An adsorption air conditioning unit has been built operating with a heat and mass recovery cycle and a zeolite?water pair. A new consolidated adsorbent composite with good heat transfer properties has been developed and implemented in the adsorber. At an ...

Florence Poyelle; Jean-Jacques Guilleminot; Francis Meunier

1998-12-08T23:59:59.000Z

95

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

Broader source: Energy.gov [DOE]

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

96

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

SciTech Connect (OSTI)

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

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

2014-09-01T23:59:59.000Z

97

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

E-Print Network [OSTI]

Influence Of Upper Air Conditions On The Patagonia Icefields L. A. Rasmussen, H. Conway, C. F, Second Fig ABSTRACT. Upper-air conditions archived in the NCEP-NCAR Reanalysis have been used cannot be determined, so the investigation is limited to examining relative changes in those upper air

Rasmussen, L.A.

98

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

E-Print Network [OSTI]

As a high-efficiency air conditioning scheme, the variable refrigerant flow (VRF) air-conditioning system is finding its way into medium-sized office buildings. Based on a generic dynamic building energy simulation environment, EnergyPlus, a new...

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

2006-01-01T23:59:59.000Z

99

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

E-Print Network [OSTI]

ICEBO2006, Shenzhen, China Maximize Comfort: Temperature, Humidity and IAQ Vol.I-6-3 Numerical Analysis of Heat and Moisture Transfer in Underground Air-conditioning Systems Qin Wang, Xiaoping Miao, Baoyi Cheng, Liangkai Fan EIEC, PLA...]. Youming Chen, Shengwei Wang, Ling Zhang. Application of System Identification of Hygrothermal Process in Buildings [M]. Construction and Industry Publishing Company in China, Beijing, 2004. [7]. J.R. Philip, D.A. de Vries. Moisture Movement in Porous...

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

2006-01-01T23:59:59.000Z

100

Identification of the Flow Resistance Coefficient and Validation of a Building Air Conditioning System  

E-Print Network [OSTI]

for HRC estimation is investigated in this paper. And some conclusions can be got as follows: 1) The MGO method is applicable for S value identification. The method is based on the principle for multi goal optimization. The process can be widely used...ICEBO2006, Shenzhen, China HVAC Technologies for Energy Efficiency, Vol. IV-11-2 Zhijian Hou Identification of the Flow Resistance Coefficient and Validation of a Building Air Conditioning System Zhiwei Lian...

Hou, Z.; Lian, Z.

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

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

E-Print Network [OSTI]

quality will be achieved. Our study aims to simulate airflow in the ventilated room with this new type of air conditioning. Radiation is taken into account by the energy conservation in the system. The following section presents algorithm, thermal..., the governing equations to be solved are the conservation equations for continuity, momentum, and energy as well as the equations for turbulent kinetic energy and its dissipation rate. The buoyancy effect is accounted for by Boussinesq approximation...

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

2006-01-01T23:59:59.000Z

102

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

SciTech Connect (OSTI)

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

Not Available

2014-04-01T23:59:59.000Z

103

Table HC9.6 Air Conditioning Characteristics by Climate Zone, 2005  

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

6 Air Conditioning Characteristics by Climate Zone, 2005 6 Air Conditioning Characteristics by Climate Zone, 2005 Million U.S. Housing Units Total......................................................................... 111.1 10.9 26.1 27.3 24.0 22.8 Do Not Have Cooling Equipment........................... 17.8 3.2 4.7 3.6 5.5 0.9 Have Cooling Equipment........................................ 93.3 7.7 21.4 23.7 18.5 21.9 Use Cooling Equipment......................................... 91.4 7.6 21.0 23.4 17.9 21.7 Have Equipment But Do Not Use it........................ 1.9 Q 0.4 0.4 0.6 0.3 Air-Conditioning Equipment 2, 3 Central System...................................................... 65.9 4.8 12.3 15.1 14.9 18.7 Without a Heat Pump......................................... 53.5 4.7 11.5 11.6 12.3 13.6 With a Heat Pump..............................................

104

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

SciTech Connect (OSTI)

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

Mendell, Mark J.

2004-06-01T23:59:59.000Z

105

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

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

106

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

SciTech Connect (OSTI)

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

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

2004-01-30T23:59:59.000Z

107

Energy-efficient heat recovery systems for air conditioning of indoor swimming pools  

SciTech Connect (OSTI)

Analysis of a conventional air-conditioning system for indoor swimming pools during the summer season is presented. The analysis showed that the cooling load is characterized by a large latent heat fraction. As a result, a reheating process must be used downstream of the cooling coil to achieve the proper design comfort condition in the pool area. This, in turn, increases the energy requirement per unit cooling load of the pool. Two heat recovery systems are proposed to reduce this energy. In the first system, ambient air is used for the reheating process in an air-to-air heat exchanger. In the second system, mixed air--recirculated and ambient air--is used for the reheating process. Heat recovery efficiency is defined as an index of the energy savings resulting from the use of the heat recovery system compared to that of a conventional air-conditioning system. At a wide range of ambient conditions it is found that the energy savings could be up to 70% of the energy required to operate a conventional air-conditioning system. A parametric study was carried out to size the air-to-air heat exchanger associated with these heat recovery systems, and the results showed that a heat exchanger having an effectiveness of 0.5 would give satisfactory results. The proposed heat recovery systems are also compared to the case of reheating using the heat rejection from the condenser of the refrigeration machine. The comparison showed that the proposed systems save more energy than reheating using the condenser heat. A typical case study is given to demonstrate the savings in energy consumption when these systems are used.

Elsayed, M.M.; El-Refaee, M.M. [Kuwait Univ., Safat (Kuwait). Mechanical Engineering Dept.; Borhan, Y.A. [Gulf Engineering Co., Safat (Kuwait)

1997-12-31T23:59:59.000Z

108

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

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

109

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

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

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.

110

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

SciTech Connect (OSTI)

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

Han, Junqiao; Piette, Mary Ann

2007-11-30T23:59:59.000Z

111

A diffusion approximation approach to stochastic modeling of air conditioning type loads  

E-Print Network [OSTI]

that the air conditioning unit is on and off. In the followino equations, TNIN and TNAX are the lower and upper limit temperatures of the thermostat deadband and To is the outside temperature. Gi 2Gw To Tw Cw Ci $ QeXt To - outside temperature Tw - wall... temperature Ti - inside temperature Gw ? thermal conductance of wall Gi - thermal conductance of air Cw - thermal capacitance of wall Ci ? thermal capacitance of air Qe - rated capacity of cooling unit Xt - zero-one process describing the switching...

Roy, Teresa Henryka

1981-01-01T23:59:59.000Z

112

"Table HC15.6 Air Conditioning Characteristics by Four Most Populated States, 2005"  

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

6 Air Conditioning Characteristics by Four Most Populated States, 2005" 6 Air Conditioning Characteristics by Four Most Populated States, 2005" " Million U.S. Housing Units" ,"U.S. Housing Units (millions)","Four Most Populated States" "Air Conditioning Characteristics",,"New York","Florida","Texas","California" "Total",111.1,7.1,7,8,12.1 "Do Not Have Cooling Equipment",17.8,1.8,"Q","Q",4.9 "Have Cooling Equipment",93.3,5.3,7,7.8,7.2 "Use Cooling Equipment",91.4,5.3,7,7.7,6.6 "Have Equipment But Do Not Use it",1.9,"Q","N","Q",0.6 "Air-Conditioning Equipment1, 2 " "Central System",65.9,1.1,6.4,6.4,5.4

113

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

E-Print Network [OSTI]

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

Miyashita, Yasushi

114

Energy and global warming impacts of next generation refrigeration and air conditioning technologies  

SciTech Connect (OSTI)

Significant developments have occurred in hydrofluorocarbon (HFC) and the application of ammonia and hydrocarbons as refrigerant working fluids since the original TEWI (Total Equivalent Warming Impact) report in 1991. System operating and performance data on alternative refrigerants and refrigeration technologies justify and updated evaluation of these new alternative refrigerants and competing technologies in well-characterized applications. Analytical and experimental results are used to show quantitative comparisons between HFCS, HFC blends, hydrocarbons, and ammonia, used as refrigerants. An objective evaluation is presented for commercial and near commercial non-CFC refrigerants/blowing agents and alternative refrigeration technologies. This information is needed for objective and quantitative decisions on policies addressing greenhouse gas emissions from refrigeration and air conditioning equipment. The evaluation assesses the energy use and global warming impacts of refrigeration and air conditioning technologies that could be commercialized during the phase out of HCFCS. Quantitative comparison TEWI for two application areas are presented. Opportunities for significant reductions in TEWI are seen with currently known refrigerants through improved maintenance and servicing practices and improved product designs.

Sand, J.R.; Fischer, S.K.; Baxter, V.D.

1996-10-01T23:59:59.000Z

115

Realisable 10-year reductions in European energy consumption for air conditioning  

Science Journals Connector (OSTI)

Abstract This paper summarises the results of a study to identify and quantify the potential impact of measures and policies to reduce the energy consumption of air conditioning in European countries over a 10-year period. The market penetration of air conditioning in Europe has increased steadily over several decades. On a business as usual basis, its energy consumption would increase by over 50% by 2020. Measures to restrict this increase are therefore important, but the savings potential straddles several overlapping areas which are subject to different constraints including those imposed by the replacement rates of systems and products, and the refurbishment rates of existing buildings. This work reported in this paper is based on the use of information from a variety of sources in a highly disaggregated model to assess the realisable savings over a 10-year period, taking into account relevant constraints. The paper summarises results at a European level, focussing on those cases that generate the greatest realisable savings. Savings are possible in three areas: improved equipment and system efficiency, reduced cooling loads, and more effective operation. The cases that offer the largest savings provide the basis for recommendations for policy measures, often using existing policy instruments. In addition, areas where further work is needed are identified. More detailed results and information about the study and additional recommendations can be found at http://www.bre.co.uk/searchresults.jsp?category=5&q=energy+management [1].

Roger Hitchin; Christine Pout; David Butler

2015-01-01T23:59:59.000Z

116

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

SciTech Connect (OSTI)

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

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

1996-11-01T23:59:59.000Z

117

Study of solar-assisted thermoelectric technology for automobile air conditioning  

SciTech Connect (OSTI)

An analytical study was conducted to determine the feasibility of employing solar energy assisted thermoelectric (TE) cooling technology in automobile air conditioners. The study addressed two key issues -- power requirements and availability of thermoelectric materials. In this paper a mathematical model was developed to predict the performance of TE air conditioners and to analyze power consumption. Results show that the power required to deliver a cooling capacity of 4 kW (13,680 Btu/h) in a 38 C (100 F) environment will be 9.5 kW electric. Current TE modules suitable for air conditioning are made of bismuth telluride. The element tellurium is expected to be in short supply if TE cooling is widely implemented for auto air conditioning; some options available in this regard were studied and presented in this paper. The photovoltaic (PV) cells, assumed to cover the roof area of a compact car can only generate about 225 W. However, this is more than enough to power a fan to provide air ventilation to the car interior which significantly reduces the peak cooling load when the car is parked in bright sunlight.

Mei, V.C.; Chen, F.C. [Oak Ridge National Lab., Oak Ridge, TN (United States); Mathiprakasam, B.; Heenan, P. [Midwest Research Inst., Kansas City, MO (United States)

1993-11-01T23:59:59.000Z

118

A genetic rule weighting and selection process for fuzzy control of heating, ventilating and air conditioning systems  

Science Journals Connector (OSTI)

In this paper, we propose the use of weighted linguistic fuzzy rules in combination with a rule selection process to develop accurate fuzzy logic controllers dedicated to the intelligent control of heating, ventilating and air conditioning systems concerning ... Keywords: BEMS, building energy management system, FLC, fuzzy logic controller, Fuzzy logic controllers, GA, genetic algorithm, Genetic algorithms, HVAC systems, HVAC, heating, ventilating, and air conditioning, KB, knowledge base, PMV, predicted mean vote index for thermal comfort, Rule selection, Weighted fuzzy rules

Rafael Alcal; Jorge Casillas; Oscar Cordn; Antonio Gonzlez; Francisco Herrera

2005-04-01T23:59:59.000Z

119

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

SciTech Connect (OSTI)

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

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

2011-07-31T23:59:59.000Z

120

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

SciTech Connect (OSTI)

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

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

2013-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

LiCl dehumidifier/LiBr absorption chiller hybrid air conditioning system with energy recovery  

SciTech Connect (OSTI)

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

Ko, S.M.

1980-06-03T23:59:59.000Z

122

LiCl dehumidifier LiBr absorption chiller hybrid air conditioning system with energy recovery  

SciTech Connect (OSTI)

This invention relates to a hybrid air conditioning system that combines a solar powered LiCl dehumidifier with a LiBr absorption chiller. The desiccant dehumidifier removes the latent load by absorbing moisture from the air, and the sensible load is removed by the absorption chiller. The desiccant dehumidifier is coupled to a regenerator and the desiccant in the regenerator is heated by solar heated hot water to drive the moisture therefrom before being fed back to the dehumidifier. The heat of vaporization expended in the desiccant regenerator is recovered and used to partially preheat the driving fluid of the absorption chiller, thus substantially improving the overall COP of the hybrid system. 4 figs.

Ko, S.M.

1980-06-03T23:59:59.000Z

123

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

SciTech Connect (OSTI)

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

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

2013-10-01T23:59:59.000Z

124

Impact of Vehicle Air-Conditioning on Fuel Economy, Tailpipe Emissions, and Electric Vehicle Range: Preprint  

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

Vehicle Air- Vehicle Air- Conditioning on Fuel Economy, Tailpipe Emissions, and Electric Vehicle Range Preprint September 2000 * NREL/CP-540-28960 R. Farrington and J. Rugh To Be Presented at the Earth Technologies Forum Washington, D.C. October 31, 2000 National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401-3393 NREL is a U.S. Department of Energy Laboratory Operated by Midwest Research Institute * * * * Battelle * * * * Bechtel Contract No. DE-AC36-99-GO10337 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

125

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

SciTech Connect (OSTI)

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

126

"Table HC3.6 Air Conditioning Characteristics by Owner-Occupied Housing Units, 2005"  

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

6 Air Conditioning Characteristics by Owner-Occupied Housing Units, 2005" 6 Air Conditioning Characteristics by Owner-Occupied Housing Units, 2005" " Million U.S. Housing Units" ,," Owner-Occupied Housing Units (millions)","Type of Owner-Occupied Housing Unit" ,"U.S. Housing Units (millions" ,,,"Single-Family Units",,"Apartments in Buildings With--" "Air Conditioning Characteristics",,,"Detached","Attached","2 to 4 Units","5 or More Units","Mobile Homes" "Total",111.1,78.1,64.1,4.2,1.8,2.3,5.7 "Do Not Have Cooling Equipment",17.8,11.3,9.3,0.6,"Q",0.4,0.9 "Have Cooling Equipment",93.3,66.8,54.7,3.6,1.7,1.9,4.8 "Use Cooling Equipment",91.4,65.8,54,3.6,1.7,1.9,4.7

127

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

SciTech Connect (OSTI)

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

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

2014-09-01T23:59:59.000Z

128

An experimental system for advanced heating, ventilating and air conditioning (HVAC) control  

Science Journals Connector (OSTI)

While having the potential to significantly improve heating, ventilating and air conditioning (HVAC) system performance, advanced (e.g., optimal, robust and various forms of adaptive) controllers have yet to be incorporated into commercial systems. Controllers consisting of distributed proportional-integral (PI) control loops continue to dominate commercial HVAC systems. Investigation into advanced HVAC controllers has largely been limited to proposals and simulations, with few controllers being tested on physical systems. While simulation can be insightful, the only true means for verifying the performance provided by HVAC controllers is by actually using them to control an HVAC system. The construction and modeling of an experimental system for testing advanced HVAC controllers, is the focus of this article. A simple HVAC system, intended for controlling the temperature and flow rate of the discharge air, was built using standard components. While only a portion of an overall HVAC system, it is representative of a typical hot water to air heating system. In this article, a single integrated environment is created that is used for data acquisition, controller design, simulation, and closed loop controller implementation and testing. This environment provides the power and flexibility needed for rapid prototyping of various controllers and control design methodologies.

Michael Anderson; Michael Buehner; Peter Young; Douglas Hittle; Charles Anderson; Jilin Tu; David Hodgson

2007-01-01T23:59:59.000Z

129

Experimental evaluation of automotive air-conditioning using HFC-134a and HC-134a  

Science Journals Connector (OSTI)

An experimental study to evaluate the energy consumption of an automotive air conditioning is presented. In this study these refrigerants will be tested using the experimental rig which simulated the actual cars as a cabin complete with a cooling system component of the actual car that is as the blower evaporator condenser radiators electric motor which acts as a vehicle engine and then the electric motor will operate the compressor using a belt and pulley system as well as to the alternator will recharge the battery. The compressor working with the fluids HFC-134a and HC-134a and has been tested varying the speed in the range 1000 1500 2000 and 2500 rpm. The measurements taken during the one hour experimental periods at 2-minutes interval times for temperature setpoint of 20C with internal heat loads 0 500 700 and 1000 W. The final results of this study show an overall better energy consumption of the HFC-134a compared with the HC-134a.

Azhar Abdul Aziz

2012-01-01T23:59:59.000Z

130

Assessment of adsorber bed designs in waste-heat driven adsorption cooling systems for vehicle air conditioning and refrigeration  

E-Print Network [OSTI]

Assessment of adsorber bed designs in waste-heat driven adsorption cooling systems for vehicle air conditioning Finned tube adsorber bed Specific cooling power Adsorber bed to adsorbent mass ratio a b s t r a c t Adsorber bed design strongly affects the performance of waste-heat driven adsorption cooling systems (ACS

Bahrami, Majid

131

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

E-Print Network [OSTI]

cooling with the compressor). Yes No #12;INSTALLATION CERTIFICATE CF-6R-MECH-08 Ice Storage AirINSTALLATION CERTIFICATE CF-6R-MECH-08 Ice Storage Air Conditioning (ISAC) Units (Page 1 of 2) Site Address: Enforcement Agency: Permit Number: 2008 Residential Compliance Forms August 2009 Ice Storage Air

132

Problem of Vain Energy Consumption in a VAV Air Conditioning System Shared By an Inner Zone and Exterior Zone  

E-Print Network [OSTI]

in winter and summer. Taking a practical project as example, this paper analyzes the energy consumption of a VAV air conditioning system that is shared by inner zone and exterior zone. The paper also points out the serious problem of useless energy...

Wenji, G.; Ling, C.; Dongdong, L.; Mei, S.; Li, Z.

2006-01-01T23:59:59.000Z

133

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

E-Print Network [OSTI]

to significant power consumption of vapour-compression systems, finding a new "green" refrigerant is another vehicles (HEVs), as it is the second most energy consuming system after the electric motor. Further, HVAC air conditioning systems used in the automotive industry are based on vapour-compression refrigeration

Bahrami, Majid

134

Global warming impacts of ozone-safe refrigerants and refrigeration, heating, and air-conditioning technologies  

SciTech Connect (OSTI)

International agreements mandate the phase-out of many chlorine containing compounds that are used as the working fluid in refrigeration, air-conditioning, and heating equipment. Many of the chemical compounds that have been proposed, and are being used in place of the class of refrigerants eliminated by the Montreal Protocol are now being questioned because of their possible contributions to global warming. Natural refrigerants are put forth as inherently superior to manufactured refrigerants because they have very low or zero global warming potentials (GWPs). Questions are being raised about whether or not these manufactured refrigerants, primarily hydrofluorocarbons (HFCs), should be regulated and perhaps phased out in much the same manner as CFCs and HCFCs. Several of the major applications of refrigerants are examined in this paper and the results of an analysis of their contributions to greenhouse warming are presented. Supermarket refrigeration is shown to be an application where alternative technologies have the potential to reduce emissions of greenhouse gases (GHG) significantly with no clear advantage to either natural or HFC refrigerants. Mixed results are presented for automobile air conditioners with opportunities to reduce GHG emissions dependent on climate and comfort criteria. GHG emissions for hermetic and factory built systems (i.e. household refrigerators/freezers, unitary equipment, chillers) are shown to be dominated by energy use with much greater potential for reduction through efficiency improvements than by selection of refrigerant. The results for refrigerators also illustrate that hydrocarbon and carbon dioxide blown foam insulation have lower overall effects on GHG emissions than HFC blown foams at the cost of increased energy use.

Fischer, S.; Sand, J.; Baxter, V.

1997-12-01T23:59:59.000Z

135

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

E-Print Network [OSTI]

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

2014-01-01T23:59:59.000Z

136

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

Broader source: Energy.gov [DOE]

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

137

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

E-Print Network [OSTI]

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

2012-01-01T23:59:59.000Z

138

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

E-Print Network [OSTI]

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

2012-01-01T23:59:59.000Z

139

Relationship between the merit factor of thermoelectric materials and the air conditioning unit of urban electric cars  

SciTech Connect (OSTI)

The main benefit of electric cars is to reduce air pollution in cities that is thus desirable to equip them with non polluting air conditioning units and this rules out frigorific compressors operating with CFC. The planned replacement of CFC by HFC is at best an interim solution. The best solution is certainly to use thermoelectric air conditioning units, which are inherently pollution-free. However, these have a fairly low COPF when compared to traditional compressor units. We study the relationship between the cooling of the interior of urban electric cars and the merit factor of the thermoelectric material in their Peltier unit. This should help provide concrete target properties of future T E materials. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.

Buffet, J. [Counsulting Engineer, 2 av. DODE de la BRUNERIE 75016 Paris (France)

1994-08-10T23:59:59.000Z

140

Enhanced Operation Strategies for Air-Conditioning and Lighting Systems Toward Peak Power Reduction for an Office Building in Kuwait  

E-Print Network [OSTI]

Enhanced?Operation?Strategies?for?Air? Conditioning?and?Lighting? Systems?Toward?Peak?Power?Reduction? for?an?Office?Building?in?Kuwait F. Alghimlas A. Al-Mulla G.P. Maheshwari D. Al-Nakib Building and Energy Technologies Department... Environment and Urban Development Division ICEBO 2012 Manchester, United Kingdom October 23-26, 2012 Electricity?Use?by?Sector?in?Kuwait Percentages?of?Primary?Energy?Utilization Percentages?of?Electricity?Utilization Yearly?Increase?in...

Alghimlas, F.; Al-Mulla, A.; Maheshwari, G.P.; Al-Nakib, D.

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

Cooling energy efficiency and classroom air environment of a school building operated by the heat recovery air conditioning unit  

Science Journals Connector (OSTI)

Abstract The recently-built school buildings have adopted novel heat recovery ventilator and air conditioning system. Heat recovery efficiency of the heat recovery facility and energy conservation ratio of the air conditioning unit were analytically modeled, taking the ventilation networks into account. Following that, school classroom displacement ventilation and its thermal stratification and indoor air quality indicated by the CO2 concentration have been numerically modeled concerning the effects of delivering ventilation flow rate and supplying air temperature. Numerical results indicate that the promotion of mechanical ventilation rate can simultaneously boost the dilution of indoor air pollutants and the non-uniformity of indoor thermal and pollutant distributions. Subsequent energy performance analysis demonstrates that classroom energy demands for ventilation and cooling could be reduced with the promotion of heat recovery efficiency of the ventilation facility, and the energy conservation ratio of the air conditioning unit decreases with the increasing temperatures of supplying air. Fitting correlations of heat recovery ventilation and cooling energy conservation have been presented.

Yang Wang; Fu-Yun Zhao; Jens Kuckelkorn; Di Liu; Li-Qun Liu; Xiao-Chuan Pan

2014-01-01T23:59:59.000Z

142

US Department of Energys Regulatory Negotiations Convening on Commercial Certification for Heating, Ventilating, Air-Conditioning, and Refrigeration Equipment  

Broader source: Energy.gov [DOE]

This document provides Public Information for Convening Interviews for US Department of Energys Regulatory Negotiations Convening on Commercial Certification for Heating, Ventilating, Air-Conditioning, and Refrigeration Equipment

143

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

E-Print Network [OSTI]

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

Xiang, C.; Xie, G.

2006-01-01T23:59:59.000Z

144

Using Hydrated Salt Phase Change Materials for Residential Air Conditioning Peak Demand Reduction and Energy Conservation in Coastal and Transitional Climates in the State of California  

E-Print Network [OSTI]

The recent rapid economic and population growth in the State of California have led to a significant increase in air conditioning use, especially in areas of the State with coastal and transitional climates. This fact makes ...

Lee, Kyoung Ok

2013-05-31T23:59:59.000Z

145

Japanese and American competition in the development of scroll compressors and its impact on the American air conditioning industry  

SciTech Connect (OSTI)

This report examines the technological development of scroll compressors and its impact on the air conditioning equipment industry. Scroll compressors, although considered to be the compressors of the future for energy-efficient residential heat pumps and possibly for many other applications, are difficult to manufacture on a volume-production base. The manufacturing process requires computer-aided, numerically controlled tools for high-precision fabrication of major parts. Japan implemented a global strategy for dominating the technological world market in the 1970s, and scroll compressor technology benefited from the advent of new-generation machine tools. As a result, if American manufacturers of scroll compressors purchase or are essentially forced to purchase numerically controlled tools from Japan in the future, they will then become dependent on their own competitors because the same Japanese conglomerates that make numerically controlled tools also make scroll compressors. This study illustrates the importance of the basic machine tool industry to the health of the US economy. Without a strong machine tool industry, it is difficult for American manufacturers to put innovations, whether patented or not, into production. As we experience transformation in the air conditioning and refrigeration market, it will be critical to establish a consistent national policy to provide healthy competition among producers, to promote innovation within the industry, to enhance assimilation of new technology, and to eliminate practices that are incompatible with these goals. 72 refs., 8 figs., 1 tab.

Ushimaru, Kenji (Energy International, Inc., Bellevue, WA (USA))

1990-02-01T23:59:59.000Z

146

Capability of air filters to retain airborne bacteria and molds in heating, ventilating and air-conditioning (HVAC) systems  

Science Journals Connector (OSTI)

The capability of air filters (filterclass: F6, F7) to retain airborne outdoor microorganisms was examined in field experiments in two heating, ventilating and air conditioning (HVAC) systems. At the beginning of the 15-month investigation period, the first filter stages of both HVAC systems were equipped with new unused air filters. The number of airborne bacteria and molds before and behind the filters were determined simultaneously in 14 days-intervals using 6-stage Andersen cascade impactors. Under relatively dry ( 12 C) outdoor air conditions air filters led to a marked reduction of airborne microorganism concentrations (bacteria by approximately 70 % and molds by > 80 %). However, during long periods of high relative humidity (> 80 % R. H.) a proliferation of bacteria on air filters with subsequent release into the filtered air occured. These microorganisms were mainly smaller than 1.1 ?m therefore being part of the respirable fraction. The results showed furthermore that one possibility to avoid microbial proliferation is to limit the relative humidity in the area of the air filters to 80 % R. H. (mean of 3 days), e. g. by using preheaters in front of air filters in HVAC-systems.

Martin Mritz; Hans Peters; Bettina Nipko; Hennin Rden

2001-01-01T23:59:59.000Z

147

Case Study: The Effective Use of an Extensive Logical rule Based Data Analytics Approach in Establishing Root Cause of Performance Issues in Widespread Deployments of Unitary Space Air Conditioning Units  

E-Print Network [OSTI]

Today a significant percentage of office spaces are air conditioned using widely deployed unitary systems, either Fan Coil Units (FCU) or Variable Air Volume (VAV) boxes, to achieve high degrees of air conditioned zonal control. However establishing...

Brady, N.

2013-01-01T23:59:59.000Z

148

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

E-Print Network [OSTI]

of their compactness and efficiency in residential and commercial applications. However, their usage as outdoor of the fins. 1. INTRODUCTION Heat pump systems are used for cooling and heating of buildings all year round, and fin surface energy on frost growth (Ohkubo, 2006; Shin et al., 2003). Measuring frost weight

149

Energy and economic performance analysis of an open cycle solar desiccant dehumidification air-conditioning system for application in Hong Kong  

Science Journals Connector (OSTI)

In this article, a transient simulation model and the EnergyPlus were used to study the energy performance and economical feasibility for integrating a solar liquid desiccant dehumidification system with a conventional vapor compression air-conditioning system for the weather condition of Hong Kong. The vapor compression system capacity in the solar assisted air-conditioning system can be reduced to 19kW from original 28kW of a conventional air-conditioning system as a case study due to the solar desiccant cooling. The economical performance of the solar desiccant dehumidification system is compared with that of the conventional air-conditioning system. The results show that the energy saving potentials due to incorporation of the solar desiccant dehumidification system in a traditional air-conditioning system is significant for the hot wet weather in Hong Kong due to higher COP resulted from higher supply chilled water temperature from chiller plants. The annual operation energy savings for the hybrid system is 6760kWh and the payback period of the hybrid system is around 7years. The study shows that the solar assisted air-conditioning is a viable technology for utilizations in subtropical areas.

Yutong Li; Lin Lu; Hongxing Yang

2010-01-01T23:59:59.000Z

150

Development of cold seawater air conditioning systems for application as a demand side management tool for Hawaii and other subtropical climates  

SciTech Connect (OSTI)

Because of the proximity to deep cold seawater for many coastal regions in Hawaii and the high demand for air conditioning in large buildings, seawater air conditioning (SWAC) is a major potential sustainable energy resource for Hawaii and other subtropical regions of the world. The basic concept of seawater air conditioning is the use deep cold seawater to cool the chilled water in one or more air conditioned buildings as opposed to using energy intensive refrigeration systems. The economic viability of the seawater air conditioning is determined by comparing the construction and operating costs of the seawater supply system to the construction and operating costs of conventional air conditioning systems. The State of Hawaii commissioned an analysis to identify the technical and economic opportunities and limitations in the use of SWAC in Hawaii. The result of this work is a feasibility analysis of SWAC systems in the state and the potential associated energy savings. The study looked at the prospects of installing such a system at a major new resort development on Oahu called West Beach.

Kaya, M.H. [State of Hawaii, Honolulu, HI (United States). Dept. of Business, Economic Development, and Tourism

1996-10-01T23:59:59.000Z

151

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

SciTech Connect (OSTI)

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

152

Memorandum To: GENERAL COUNSEL, DEPARTMENT OF ENERGY (DOE) From: JONATHAN MELCHI, HEATING, AIR-CONDITIONING AND REFRIGERATION  

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

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

153

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

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

AHRI Comments - DOE Verification Testing in Support of Energy Star AHRI Comments - DOE Verification Testing in Support of Energy Star May 9, 2011 P a g e | 1 May 9, 2010 Ms. Ashley Armstrong U.S. Department of Energy 1000 Independence Avenue, SW Washington, DC 20585 RE: DOE Verification Testing in Support of Energy Star Dear Ms. Armstrong: I am writing on behalf of the Air Conditioning, Heating and Refrigeration Institute (AHRI) to address the proposed DOE requirements for verification testing in support of the Energy Star program. AHRI is the trade association representing manufacturers of heating, cooling, and commercial refrigeration equipment. More than 300 members strong, AHRI is an internationally recognized advocate for the industry, and develops standards for and certifies the performance of many of the

154

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

SciTech Connect (OSTI)

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

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

2014-01-01T23:59:59.000Z

155

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

SciTech Connect (OSTI)

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

Goldman, Charles

2007-03-01T23:59:59.000Z

156

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

E-Print Network [OSTI]

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

Zevenhoven, Ron

157

Air Conditioning Cold/Heat Source Analysis of the Inclusion of the Monetary Values of Environmental Damage Based on the LCA Theory  

E-Print Network [OSTI]

of Life Cycle Assessment (LCA) and Willingness - to - pay (WTP). The analysis makes it possible to compare the technical and eco-nomic differences of the air conditioning system based on business economics to a system with greater empha-sis on socio...

Li, Z.; Duanmu, L.; Shu, H.; Zhu, Y.

2006-01-01T23:59:59.000Z

158

2014-02-07 Issuance: Certification of Commercial Heating, Ventilation, and Air-conditioning, Water Heating, and Refrigeration Equipment; Notice of Proposed Rulemaking  

Broader source: Energy.gov [DOE]

This document is a pre-publication Federal Register notice of proposed rulemaking regarding certification of commercial heating, ventilation, and air-conditioning, water-heating, and refrigeration equipment, as issued by the Deputy Assistant Secretary for Energy Efficiency on February 7, 2014.

159

ISSUANCE 2014-12-23: Energy Conservation Program for Certain Industrial Equipment: Energy Conservation Standards and Test Procedures for Commercial Heating, Air-Conditioning, and Water-Heating Equipment, Notice of Proposed Rulemaking  

Broader source: Energy.gov [DOE]

Energy Conservation Program for Certain Industrial Equipment: Energy Conservation Standards and Test Procedures for Commercial Heating, Air-Conditioning, and Water-Heating Equipment, Notice of Proposed Rulemaking

160

NRELs Energy-Saving Technology for Air Conditioning Cuts Peak Power Loads Without Using Harmful Refrigerants (Fact Sheet), NREL (National Renewable Energy Laboratory)  

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

DEVAP Slashes Peak Power Loads DEVAP Slashes Peak Power Loads Desiccant-enhanced evaporative (DEVAP) air-condi- tioning will provide superior comfort for commercial buildings in any climate at a small fraction of the elec- tricity costs of conventional air-conditioning equip- ment, 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

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

Estimated 2017 Refrigerant Emissions of 2,3,3,3-tetrafluoropropene (HFC-1234yf) in the United States Resulting from Automobile Air Conditioning  

Science Journals Connector (OSTI)

The use of MAC systems also consumes significant quantities of fuel as compared to similar driving conditions without operating the air conditioning. ... However, turning off the air conditioner and rolling-down the windows also decreases fuel economy due to increased air drag but this scenario is not considered in these studies (1, 2). ... In 2006, the European Commission issued Directive 2006/40/EC (commonly known as the F-Gas Directive) (3), which requires new types of air-conditioned cars sold in the EU to have a refrigerant with a GWP of 150 or less starting in 2011, and all new vehicles to have a refrigerant with a GWP of 150 or less by 2017. ...

Stella Papasavva; Deborah J. Luecken; Robert L. Waterland; Kristen N. Taddonio; Stephen O. Andersen

2009-11-12T23:59:59.000Z

162

Influence of Mobile Air-Conditioning on Vehicle Emissions and Fuel Consumption:? A Model Approach for Modern Gasoline Cars Used in Europe  

Science Journals Connector (OSTI)

However, apart from studies involving MOBILE6 in the United States (1) and other U. S. studies (2?5), air-conditioning activity in relation to meteorological conditions has not been thoroughly investigated. ... For manual air conditioners, a good setting was sought before the test and the knobs for cooling and ventilation were readjusted if the temperature drifted more than 1 C. ... The temperatures of the conditioned air range from 5 to 11 C. ...

Martin F. Weilenmann; Ana-Marija Vasic; Peter Stettler; Philippe Novak

2005-11-04T23:59:59.000Z

163

Energy consumption and optimization of internally cooled/heated liquid desiccant air-conditioning system: A case study in Hong Kong  

Science Journals Connector (OSTI)

Abstract LDAC (liquid desiccant air-conditioning system) is promising for reducing the energy consumption, and improving the indoor air quality. In this paper, the operation performance of LDAC with internally cooled/heated dehumidifier/regenerator was simulated and optimized. The cooling tower and solar collectors were employed as the cooling/heating source. Four nested iteration loops were developed and solved for system modeling. A typical commercial building in Hong Kong was selected as a case study, which air-conditioning load was obtained by Energy-plus. Results show that with the increase of solar collector area, the electricity consumption of AC (air-conditioning systems) system reduced by 1135% in original system, but only a part of dehumidification demand was handled with liquid desiccant ventilation, which led to a low chiller COP (coefficient of performance). By adding a cooling coil for the solution entering dehumidifier, the electricity saving effectively increased to 2247%, while the heat demand for regeneration also increased by 17%. So, a heat exchanger between water leaving regenerator and solution leaving dehumidifier was introduced. With the lower thermal requirement (reduced by 20%) and higher solar fraction (increased from 30 to 40%), the saving further increased to 2949%, and the required collector area obviously reduced by 5060% for the similar energy saving purpose.

Ronghui Qi; Lin Lu

2014-01-01T23:59:59.000Z

164

US Department of Energys Regulatory Negotiations Convening on Commercial Certification for Heating, Ventilating, Air-Conditioning, and Refrigeration Equipment  

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

US Department of Energy's Regulatory Negotiations Convening on US Department of Energy's Regulatory Negotiations Convening on Commercial Certification for Heating, Ventilating, Air-Conditioning, and Refrigeration Equipment Public Information for Convening Interviews I. What are the substantive issues DOE seeks to address? Strategies for grouping various basic models for purposes of certification; Identification of non-efficiency attributes, which do not impact the measured consumption of the equipment as tested by DOE's test procedure; The information that is certified to the Department; The timing of when the certification should be made relative to distribution in commerce; and Alterations to a basic model that would impact the certification.

165

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

Broader source: Energy.gov [DOE]

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

166

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

E-Print Network [OSTI]

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

2012-01-01T23:59:59.000Z

167

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

E-Print Network [OSTI]

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

2012-01-01T23:59:59.000Z

168

Indoor air environment and night cooling energy efficiency of a southern German passive public school building operated by the heat recovery air conditioning unit  

Science Journals Connector (OSTI)

Abstract The recently built school building has adopted a novel heat recovery air conditioning system. Heat recovery efficiency of the heat recovery facility and energy conservation ratio of the air conditioning unit were analytically modeled, taking the ventilation networks into account. Following that, school classroom displacement ventilation and its thermal stratification have been numerically investigated concerning the effects of the heat flow flux of passive cooling within the ceiling concrete in the classroom due to night ventilation in summer which could result in cooling energy storage. Numerical results indicate that the promotion of passive cooling can simultaneously decrease the volume averaged indoor temperatures and the non-uniformity of indoor thermal distributions. Subsequent energy performance analysis demonstrates that classroom energy demands for ventilation and cooling could be reduced with the promotion of heat recovery efficiency of the ventilation facility, and the energy conservation ratio of the air-cooling unit decreases with the increasing temperatures of exhaust air and the heat flux value for passive cooling within the classroom ceiling concrete. Fitting correlations of heat recovery ventilation and cooling energy conservation have been presented.

Yang Wang; Fu-Yun Zhao; Jens Kuckelkorn; Xiao-Hong Li; Han-Qing Wang

2014-01-01T23:59:59.000Z

169

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

SciTech Connect (OSTI)

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

Armstrong, P.R.; Katipamula, S.

1996-10-01T23:59:59.000Z

170

Optimization of Air Conditioning Cycling  

E-Print Network [OSTI]

Benchmark Long Cycle .............................................................................................. 95 5.46 System Pressures and Temperatures Valve Part Cycle Vs Benchmark Long Cycle...

Seshadri, Swarooph

2012-10-19T23:59:59.000Z

171

Removal of submicron particles using a carbon fiber ionizer-assisted medium air filter in a heating, ventilation, and air-conditioning (HVAC) system  

Science Journals Connector (OSTI)

Laboratory tests of particle removal were performed with a pair of carbon fiber ionizers installed upstream of a glass fiber air filter. For air flow face velocities of 0.4, 0.6, and 0.8m/s, the overall particle removal efficiencies of the filter for all submicron particles were 17%, 16%, and 14%, respectively, when the ionizers were not turned on. These values increased to 27%, 23%, and 19%, respectively, when the ionizers were used to generate ions of 6.0נ109ions/cm3 in concentration. The carbon fiber ionizers were then installed in front of a glass fiber air filter located in a heating, ventilation, and air-conditioning (HVAC) system. Field tests were performed in a test office room with a total indoor particle concentration of 2.2נ104particles/cm3. When the flow rate was 75 cubic meters per hour (CMH), the steady-state values of the total indoor particle concentrations using the glass fiber air filter with and without ionizers decreased to 0.87נ104particles/cm3 and 1.15נ104particles/cm3, respectively, resulting in a 25% decrease of the ionizer effect. When the operation flow rate was increased to 115 and 150CMH, the effect of the ionizer decreased to 19% and 17%, respectively. These experimental data match the results calculated using a mass-balance model whose parameters were determined from laboratory tests.

Jae Hong Park; Ki Young Yoon; Jungho Hwang

2011-01-01T23:59:59.000Z

172

Using energy audits to investigate the impacts of common air-conditioning design and installation issues on peak power demand and energy consumption in Austin, Texas  

Science Journals Connector (OSTI)

This study presents an analysis of a unique dataset of 4971 energy audits performed on homes in Austin, Texas in 20092010. We quantify the prevalence of typical air-conditioner design and installation issues such as low efficiency, oversizing, duct leakage, and low measured capacity, and estimate the impacts that resolving these issues would have on peak power demand and cooling energy consumption. We estimate that air-conditioner use in single-family residences currently accounts for 1718% of peak demand in Austin, and we found that improving equipment efficiency alone could save up to 205MW, or 8%, of peak demand. We estimate that 31% of systems in this study were oversized, leading to up to 41MW of excess peak demand. Replacing oversized systems with correctly sized higher efficiency units has the potential for further savings of up to 81MW. We estimate that the mean system could achieve 18% and 20% in cooling energy savings by sealing duct leaks and servicing their air-conditioning units to achieve 100% of nominal capacity, respectively. Although this analysis is limited to the City of Austin, understanding the methods described herein could allow electric utilities in similar climates to make better-informed decisions when considering efficiency improvement programs.

Joshua D. Rhodes; Brent Stephens; Michael E. Webber

2011-01-01T23:59:59.000Z

173

DOE/EA-1673: Environmental Assessment for Energy Conservation Program for Certain Industrial Equipment: Energy Conservation Standards and Test Procedures for Commercial Heating, Air-Conditioning, and Water-Heating Equipment (July 2009)  

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

3 3 Environmental Assessment for 10 CFR 431 Energy Conservation Program for Certain Industrial Equipment: Energy Conservation Standards and Test Procedures for Commercial Heating, Air- Conditioning, and Water-Heating Equipment July 2009 8-i CHAPTER 8. ENVIRONMENTAL ASSESSMENT TABLE OF CONTENTS 8.1 INTRODUCTION ............................................................................................................... 8-1 8.2 AIR QUALITY ANALYSIS ............................................................................................... 8-1 8.3 AIR POLLUTANT DESCRIPTIONS ................................................................................ 8-1 8.4 AIR QUALITY REGULATIONS ...................................................................................... 8-3

174

Robotics and Energy Usage  

E-Print Network [OSTI]

It is commonly assumed that the use of robots in an industrial plant will cut energy usage, because robots require no heat, light, or air conditioning in their work space. However, in analyzing industrial installations, we have found that...

Hershey, R. L.; Fenton, S. E.; Letzt, A. M.

1983-01-01T23:59:59.000Z

175

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

Broader source: Energy.gov [DOE]

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

176

2014-09-18 Issuance: Energy Conservation Standard for Small, Large, and Very Large Air-Cooled Commercial Package Air Conditioning and Heating Equipment; Notice of Proposed Rulemaking and Public Meeting  

Broader source: Energy.gov [DOE]

This document is a pre-publication Federal Register Notice of Proposed Rulemaking and Public Meeting regarding Energy Conservation Standards for Small, large, and Very Large Air-Cooled Commercial Package Air Conditioning and Heating Equipment, as issued by the Assistant Secretary for Energy Efficiency and Renewable Energy on September 18, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

177

Heating, Ventilation, and Air Conditioning Projects | Department...  

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

- Grenada, MS -- International Copper Association - New York, NY -- Wieland - Ulm, Germany -- Heat Transfer Technologies - Abington, PA Multi-Function Fuel-Fired Heat Pump...

178

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

E-Print Network [OSTI]

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

2014-01-01T23:59:59.000Z

179

Control of Computer Room Air Conditioning using IT Equipment Sensors  

E-Print Network [OSTI]

8 Figure 5 Server rack Inlet Air Temperature (8 Figure 6 Server-rack Leaving Air Temperature (Rack .

Bell, Geoffrey C.

2010-01-01T23:59:59.000Z

180

Gas Powered Air Conditioning Absorption vs. Engine-Drive  

E-Print Network [OSTI]

the cooling effect of water evaporation to cool a facilities water cooling system while the gas engine drive chiller uses a standard "freon" compressor driven by a gas engine' to provide its cooling. In the absorption chiller, a heat generator boils... for the water in the evaporator section. A pump then moves the dilute solution back to the generator to continue the process. GED chillers are no different than their electric counterparts except an engine drives the compressor instead of an electric motor...

Phillips, J. N.

1996-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

Development of Optimization Tool for Air Conditioning System Operation  

E-Print Network [OSTI]

Operations, Berlin, Germany, October 20-22, 2008 Outside air temperature and the absolute air humidity are predicted by the Auto-regressive Integrated Moving Average (ARIMA) model [1],[2]. The solar radiation on a horizontal surface... of the error margin Energy Consumption (set value A) Energy Consumption (set value B) ESL-IC-08-10-55 Proceedings of the Eighth International Conference for Enhanced Building Operations, Berlin, Germany, October 20-22, 2008 J VAV unit is also operated under...

Sumiyoshi, D.; Akashi, Y.

182

Simulation- Assisted Audit of an Air Conditioned Office Building  

E-Print Network [OSTI]

Conference for Enhanced Building Operations, Berlin, Germany, October 20-22, 2008 performances of the installation. Finally, some significant retrofit opportunities are proposed. BUILDING DESCRIPTION Building design The considered building is an existing... Conference for Enhanced Building Operations, Berlin, Germany, October 20-22, 2008 In nominal heating conditions (outdoor : -10?C/RH 90%; indoor : 20?C/RH50%), with ?t = 30 K, this gives a sensible power demand of: g1843g4662g3046,g3041g3042g3040 =g343623...

Bertagnolio, S.; Lebrun, J.; Hannay, J.; Silva, C. A.

183

Cool Storage for Solar and Conventional Air Conditioning  

Science Journals Connector (OSTI)

The term thermal energy storage can apply to any storage function for which the principal inputs and outputs are thermal energy, whether as hotness or as coolness. Generally, hotness storage technologies h...

C. J. Swet

1989-01-01T23:59:59.000Z

184

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

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

of the updated Energy Conservation Standards for Air Conditioners, Furnaces and Heat Pumps. DOE EX Parte Memo.pdf More Documents & Publications 3rd Semi-Annual Report to...

185

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

Broader source: Energy.gov [DOE]

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

186

Commissioning and Diagnosis of VAV Air-Conditioning Systems  

E-Print Network [OSTI]

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

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

2006-01-01T23:59:59.000Z

187

Keeping Cool Without Air Conditioning | Department of Energy  

Office of Environmental Management (EM)

in summer. If you have a big deciduous tree in front of a sunny window, it blocks the sun in the summer, but lets it in in the winter when you actually need the heat" He just...

188

Importance of Design Conditions for Sizing Air-Conditioning Plant  

E-Print Network [OSTI]

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

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

2000-01-01T23:59:59.000Z

189

The investigation of exhaust powered, automotive air cycle air conditioning  

E-Print Network [OSTI]

Pressure Ratio Net Power Test Apparatus Available Turbocompressors Turbine and Compressor Wheels Mounted to Shaft Turbocompressor Mounted. to Exhaust Line Total System Test Rig Full Throttle Performance Curves Subscript 'c' Corrected Results 13 13... an automotive air cycle unit which employed a rotary- vaned compressor. The prototype unit developed. cooling over various engine speeds because of the compressor being a positive displacement type which developed fairly high pressures on the order of 40 psia...

Holley, James Andrew

1978-01-01T23:59:59.000Z

190

Retrofitting Air Conditioning and Duct Systems in Hot, Dry Climates  

SciTech Connect (OSTI)

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

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

2012-07-01T23:59:59.000Z

191

Desiccant Enhanced Evaporative Air-Conditioning (DEVap): Evaluation...  

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

can be sourced from fuels such as natural gas, waste heat, solar, or biofuels. Thermal energy consumption correlates directly to the humidity level in the operating environment....

192

Smart School Symposium Heating Ventilation and Air Conditioning Session  

E-Print Network [OSTI]

used in Schools Efficiency Metrics for HVAC Equipment Historical Perspective on Efficiency · Weather data is not the same, and has a big impact on building loads as well as the performance of HVAC;School Load Data Metrics · Using the ASHRAE 90.1 benchmark buildings models I have developed

California at Davis, University of

193

Energy Efficient Design, Air Conditioning Correspondence to Author:  

E-Print Network [OSTI]

ABSTRACT: HVAC maintain both comfort and safety of indoor air quality. The challenge of maintaining high product quality while simultaneously reducing production costs can often be met through investments in energy efficient technologies and energy efficiency practices. The greatest opportunities for energy efficiency exist at the design stage for HVAC systems in new industrial facilities. By sizing components of HVAC systems generally include dampers, supply and exhaust fans, filters, humidifiers, dehumidifiers, heating and cooling coils, ducts, and various sensors properly and designing energy efficiency into a new facility, an industry can minimize the energy consumption and operational costs of its plant HVAC systems from the outset. Optimizing system design and operations, such as minimizing laboratory ventilation, can also lead to significant reductions in energy use. Energy efficiency improvement is an important way to reduce these costs and to increase predictable earnings, especially in times of high energy price volatility. There are a variety of opportunities available at individual plants in the industry to reduce energy consumption in a cost-effective manner.

Parth Patel; Parth Patel

194

Control of Computer Room Air Conditioning using IT Equipment Sensors  

E-Print Network [OSTI]

control routine to adjust setpoints for supply air temperaturecontrol routine to adjust setpoints for supply air temperaturesupply air temperature is provided. The fan-speed control

Bell, Geoffrey C.

2010-01-01T23:59:59.000Z

195

Standards in acoustics of the American Society of Heating, Refrigeration, and Air?Conditioning Engineers (ASHRAE)  

Science Journals Connector (OSTI)

This paper presents the extent of ASHRAEs involvement in sound and noise standards. ASHRAE has only a limited number of formal standards in acoustics but its two volumes of the four?volume set of handbooks contain many items that have become de facto standards. The Fundamentals Handbook and the Applications Handbook provide tables that show the power loss due to end reflection attenuation of lined ducts room criteria approaches and metrics and other material properties that are used even though and in spite of the fact that they never were evaluated as a standard by Canvass or other means. I will summarize the topics in the ASHRAE publications and discuss the limitations and current controversial topics.

2000-01-01T23:59:59.000Z

196

Uncertainty of sound power levels determined following Air Conditioning Heating and Refrigeration Institute Standard 220  

Science Journals Connector (OSTI)

As part of the AHRI ASA-ANSI and ISO standards development processes the uncertainty of sound power measurements needs to be quantified for inclusion in sound power standards. A study of four reverberation rooms with volumes of 140 280 560 and 1790 cubic meters was undertaken. Sound power levels for five noise sources (two vertical shafted sound sources two horizontal shafted sound sources and a leaf blower) were determined using ARI Standard 220. Variables investigated include: source location source orientation room conditions source operating characteristics and microphone traverse length. The frequency range of interest was 25 Hz to 10 kHz. Measurements were repeated and the order of tests was randomized. Of particular interest was the difference between the 140 cubic foot room and the other rooms to confirm the room qualification process required by ARI Standard 220 because the 140 cubic foot room does not meet the ARI Standard 220 qualification process but does meet the requirements in ISO 3741. This work will be helpful in understanding the sources of variation and allow for a starting point for determining if improvements are needed and if so what factors should be considered.

2010-01-01T23:59:59.000Z

197

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

E-Print Network [OSTI]

upper respiratory symptoms, cough, eye symptoms, fatigue orof breath, or chest tightness); cough; upper respiratory (atrespiratory symptoms, cough, and eye symptoms. Calibration

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

2007-01-01T23:59:59.000Z

198

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

E-Print Network [OSTI]

Zhang Senior Engineer Postgraduate Wuhan Architectural Design Institute, Wuhan, China, 430014 Chenyh918@263.net Abstract: This paper analyzes energy-saving design for pressure-difference control in a variable flow air...

Chen, Y.; Zhang, Z.

2006-01-01T23:59:59.000Z

199

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

E-Print Network [OSTI]

C, respectively. The C.O.P in both cases was about 0.08. Wang et al. [13] studied a different approach to increase the overall efficiency of the adsorption icemaker, who joined a solar water heater and an icemaker in the same machine. This machine used... the pair Activated carbon-methanol and had 2 m2 of evacuated tube collectors to warm 60 kg of water up to 900C. The daily ice production was about 10 kg when the insolation was about 22 MJm-2. A similar system was studied by Wang et al. [14] who assumed...

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

2010-01-01T23:59:59.000Z

200

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

E-Print Network [OSTI]

Yifeng Wu Honglin Wang Doctoral Candidate Associate Professor Master Master Master Master School of Municipal & Environmental Eng, Harbin Institute of Technology Harbin P.R. China, 150090 hitbai@163.com Abstract: The energy consumption... region and the same operating strategy was adopted[1]. Wang Li analyzed the temperature control principles to achieve economical operation in CAV system, and presented improved control strategy to integrate fresh air control with indoor air...

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

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

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

E-Print Network [OSTI]

.25 minutes. This setting allows a maximum reduction of the demand of the condensing unit of 30%. The direct control device is part of a bi-directional power line carrier load management system. It is a three tier system consisting of a central control... lines to the central control computer (CCC). Once a week, the load survey data from the CCC was copied to a tape to be transferred to the Mesquite Data Center for analysis. A heating and cooling load calculation was performed on each house...

Schneider, K.; Thedford, M.

1986-01-01T23:59:59.000Z

202

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

E-Print Network [OSTI]

Like a moving building, a train's outer meteorologic parameter will change a lot with the local meteorologic parameter on the way. In this paper, we put forward the design method of the typical design period and some dynamic energy-saving ways...

Liu, P.; Li, D.

2006-01-01T23:59:59.000Z

203

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

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

Michael 207 ConradThiede, ChristianTominski, Heidrun Schumann University of Rostock, Germany Computer Technologies and Information Sciences Websites Summary: Room Multiple...

204

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

E-Print Network [OSTI]

This paper reports on a study on how to appropriately divide system zoning by using DeST software to calculate the basis dynamic temperature and load of all rooms in an office building. Influent factors of weather conditions, building envelope...

Fan, Y.; Li, D.

2006-01-01T23:59:59.000Z

205

The Earth-Coupled or Geothermal Heat Pump Air Conditioning System  

E-Print Network [OSTI]

As utility costs have risen despite political campaign promises and energy conserving measures implemented by the utility companies such as alternative fuel use (coal and nuclear), co-generation, etc., homeowners have begun to search for effective...

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

1985-01-01T23:59:59.000Z

206

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

E-Print Network [OSTI]

with automatic inspection, control the condense times and installing toroidal swirl type filtering water purifier. We have solved the water quality fundamentally of the circulation cooling water. This way will make the chem..with medicine more reliable...

Zhang, J.

2006-01-01T23:59:59.000Z

207

E-Print Network 3.0 - air conditioning committee Sample Search...  

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

Committee Meeting Minutes January 16, 2008 Darden 126 Attendees... Transit Service, Maintenance Shop, Operations, Administration, Air and HSCMedical Center. Major Source: Whittle,...

208

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

E-Print Network [OSTI]

???? Percentage opening of the EEV ?? Compressor volume ?? Error function ?1, ?2, ?3 Valve parameters ?0 Initial compression of the valve spring ?? Displacement of expansion valve head Greek symbols ?0 , ?1 Intermediate valve parameters....4 Simulink Response Optimization Toolbox ............................. 35 xi CHAPTER Page...

Hariharan, Natarajkumar

2011-08-08T23:59:59.000Z

209

E-Print Network 3.0 - alternative automative air-conditioning...  

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

Suprieure de Cachan Collection: Computer Technologies and Information Sciences 7 Demand Response Spinning Reserve Demonstration Summary: need for spinning reserve is constant,...

210

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

E-Print Network [OSTI]

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

Guang, L.; Li, R.

2006-01-01T23:59:59.000Z

211

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

E-Print Network [OSTI]

simulated and compared the summer energy consuming conditions of the two systems. Results prove the superiority of the 2nd return air system, and the validity of the simulation. Also, the air system energy performance in summer was illustrated with typical...

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

2006-01-01T23:59:59.000Z

212

E-Print Network 3.0 - air conditioning problemas Sample Search...  

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

2004. Summary: Ingeniera en Telecomunicacin. CLCULO. EXAMEN FINAL. JULIO 2004. PRIMER PARCIAL Problema 1... ) , (a, b R 0) (c) lim x1 1 - 3 x 1 - 5 x Problema 2....

213

VFD Technology's Energy Conservation Application at Metro Ventilation Air-conditioning System  

E-Print Network [OSTI]

Shenzhen metro has been applied the VFD control technique and close loop negative control logic to adjust and control the temperature and humidity of public area and conserve the energy on HVAC system of children palace station and Fumin station...

Li, G.

2006-01-01T23:59:59.000Z

214

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

E-Print Network [OSTI]

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

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

2006-01-01T23:59:59.000Z

215

Research Positionsfor Development of Novel Green Air Conditioning and Refrigeration Systems for Transportation Vehicles  

E-Print Network [OSTI]

in refrigeration and heat pump systems, HVAC, porous media development/characterization, transport phenomena of compact and lightweight heat exchangers for evaporator and condenser; v) Development of heatdriven adsorption chillers tailored to service vehicles; vi) Development and implementation of thermal energy

Bahrami, Majid

216

E-Print Network 3.0 - air conditioning energy Sample Search Results  

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

Geosciences 3 Energy Efficient Process Heating: Managing Air Flow Kevin Carpenter and Kelly Kissock Summary: Energy Efficient Process Heating: Managing Air Flow Kevin Carpenter...

217

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

E-Print Network [OSTI]

analysis is shown in table 3. Tab.3 Calculation results of direct return system terminal control j i 1 2 3 4 5 Yi 1 0 1 1 1 1 0 2 0.965 0 1 1 1 0.009 3 0.841 0.863 0 1 1 0.074 4 0.873 0.900 0.955 0 1 0.068 5 0.797 0.821 0.872 0.913 0 0.149 j... analysis is shown in table 3. Tab.3 Calculation results of direct return system terminal control j i 1 2 3 4 5 Yi 1 0 1 1 1 1 0 2 0.965 0 1 1 1 0.009 3 0.841 0.863 0 1 1 0.074 4 0.873 0.900 0.955 0 1 0.068 5 0.797 0.821 0.872 0.913 0 0.149 j...

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

2006-01-01T23:59:59.000Z

218

E-Print Network 3.0 - air conditioning devices Sample Search...  

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

Interaction Institute, Carnegie... cities of the developing world, urban air pollution has worsened, which has been detrimental... to the health of their populations. At...

219

Gas -Fueled Engine-Driven Air Conditioning Systems for Commercial Buildings  

E-Print Network [OSTI]

satisfactorily in the laboratory and in a 450-bed hospital. The engine chiller has been redesigned to improve performance, increase capacity, and reduce the footprint, and is undergoing field tests at seven sites to verify performance and reliability....

Lindsay, B. B.

1987-01-01T23:59:59.000Z

220

3172, Page 1 International Refrigeration and Air Conditioning Conference at Purdue, July 16-19, 2012  

E-Print Network [OSTI]

insulation, thermal conductivity, heat transfer, moisture accumulation, chiller pipelines ABSTRACT Mechanical of pipe insulation systems had quite different water absorption rates due to different characteristics

Ghajar, Afshin J.

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

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

E-Print Network [OSTI]

network analysis ? Proceedings 3rd Hydro informatics Conference Of the International Association for Hydraulic Research, Copenhagen, Denmark, 1998:57-62. [7] R. Simpson, L. J. Murphy, G. C. Dandy. Pipe Network Optimization Using Genetic Algorithms...

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

2006-01-01T23:59:59.000Z

222

Regression analysis of residential air-conditioning energy consumption at Dhahran, Saudi Arabia  

SciTech Connect (OSTI)

The energy consumption of a house air conditioner located at Dhahran, Saudi Arabia, is modeled as a function of weather parameters and total (global) solar radiation on a horizontal surface. The selection of effective parameters that significantly influence energy consumption is carried out using general stepping regression methods. The problem of collinearity between the regressors is also investigated. The final model involves parameters of total solar radiation on a horizontal surface, wind speed, and temperature difference between the indoor and outdoor condition. However, the model coefficients are functions of relative humidity and/or temperature difference between the indoor and outdoor condition. Model adequacy is examined by the residual analysis technique. Model validation is carried out by the data-splitting technique. The sensitivity of the model indicates that relative humidity and temperature difference strongly influence the cooling energy consumption. It was found that an increase in relative humidity from 20% to 100% can cause a 100% increase in cooling energy consumption during the high cooling season.

Abdel-Nabi, D.Y.; Zubair, S.M.; Abdelrahman, M.A.; Bahel, V. (Energy Systems Group, Div. of Energy Resources, Research Inst., King Fahd Univ. of Petroleum and Minerals, Dhahran (SA))

1990-01-01T23:59:59.000Z

223

UA researchers invent an air conditioning system using ceramic panels Alicante, 5th September 5, 2013  

E-Print Network [OSTI]

of renewable solar, geothermal and biomass energy, both in summer and winter. Also, the material provides other advantages such as light weight, easy maintenance and the ability to set custom formats tailored to the needs

Escolano, Francisco

224

Modeling and Control of Aggregated Air Conditioning Loads Under Realistic Conditions  

SciTech Connect (OSTI)

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

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

2013-02-24T23:59:59.000Z

225

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

E-Print Network [OSTI]

of Science and Technology Press, 1996. [2] J.Kelly kissock, J Michael Hannig, Thomas I. Whitney et al. Early results from testing phase change wallboard, IEA Annex10? phase change materials and chemical reactions for thermal energy storage first...

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

2006-01-01T23:59:59.000Z

226

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

E-Print Network [OSTI]

cooling units (e.g. , fan coil units) in office buildingsinduction units, fan coil units, individual room packaged ACsystems, cooling tower, fan coil unit, and terminal units.

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

2007-01-01T23:59:59.000Z

227

[en] TECHNICAL AND ECONOMIC ASSESSMENT OF MEDIUM SIZED SOLAR-ASSISTED AIR-CONDITIONING IN BRAZIL.  

E-Print Network [OSTI]

??[pt] No Brasil, devido ao clima tropical, muita energia eltrica utilizada em sistemas de ar condicionado. Devido excelente irradiao solar que incide na (more)

TILL FELIX REICHARDT

2012-01-01T23:59:59.000Z

228

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

SciTech Connect (OSTI)

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

Kerrigan, P.

2014-03-01T23:59:59.000Z

229

Influence of Attic Radiant Barrier Systems on Air Conditioning Demand in an Utility Pilot Project  

E-Print Network [OSTI]

by Oak Ridge National Laboratory showed space heating reductions in Miami, Orlando and Atlanta (Wilkes, 1991). Also, detailed measurements by ORNL showed heating demand and energy reductions in monitored Tennessee homes (Levins and Karnitz, 1987...- 11 and R-30 Insulation, ORNL/CON-226, Oak Ridge National Laboratories, Oak Ridge, TN. Levins, W. P. and Karnitz, M. A. and Hall, J.A., 1990. Cooling Season Energy Measurements of Dust and Ventilation Effects on Radiant Barriers, ORNL/CON-271...

Parker, D. S.; Sherwin, J. R.

2002-01-01T23:59:59.000Z

230

E-Print Network 3.0 - air conditioning fuel Sample Search Results  

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

Energy Storage, Conversion and Utilization ; Renewable Energy 14 Hydrogen is a versatile energy carrier that can be used to power nearly every end-use energy need. The fuel...

231

Influence of Fault and Optimization of PID Parameters in Building Air-Conditioning System  

E-Print Network [OSTI]

200 400 600 800 0 200 400 600 800 8 10 12 14 16 18 Supply air flow volume A ir flo w v ol um e[ m 3 / h] A ir flo w v ol um e[ m 3 / h] (b)Supply air flow volume Time[hour] 0 10 20 0.6 0.8 1 1.2 1....4 18161412108 Time[hour] Secondary inlet water temp. Secondary outlet water temp. Secondary pump water flow volume w at er fl ow v ol um e[ m 3 / h] Te m p. [d eg .C ] (d)Secondary inlet & outlet water temp. / water flow volume 10...

Kuniyoshi, K.; Akashi, Y.; Sumiyoshi, D.; Song, Y.

2005-01-01T23:59:59.000Z

232

E-Print Network 3.0 - air conditioning heat Sample Search Results  

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

water. FIND... : Determine which condition feels colder. Contrast these results with a heat loss of 30 Wm2 under ormal room... in the case f air flow.o ANALYSIS: The hand will...

233

Rotary Vapor Compression Cycle Technology: A Pathway to Ultra-Efficient Air Conditioning, Heating and Refrigeration  

Broader source: Energy.gov [DOE]

Lead Performer: Sandia National Laboratories, Livermore, CAPartners: Creative Thermal Solutions, Urbana, IL

234

E-Print Network 3.0 - air conditioning deactivation Sample Search...  

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

and Environmental Engineering, University of Toledo Collection: Materials Science ; Energy Storage, Conversion and Utilization 2 Extension Note Research Disciplines: Ecology...

235

E-Print Network 3.0 - air-conditioning systemsfor occupant Sample...  

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

University Collection: Biology and Medicine 3 Introduction Prior research has shown that energy savings are Summary: conditions for human occupancy. American Society of Heating,...

236

E-Print Network 3.0 - air conditioning installations Sample Search...  

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

Las Vegas, Nevada, to develop, design, procure, install, and operate an on-site hydrogen generation Source: DOE Office of Energy Efficiency and Renewable Energy, Hydrogen, Fuel...

237

E-Print Network 3.0 - air conditioning Sample Search Results  

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

Collection: Geosciences ; Environmental Sciences and Ecology 19 Connectable solar air collectors Solar Energy Centre Denmark Summary: Connectable solar air collectors Solar...

238

E-Print Network 3.0 - air conditioning applications Sample Search...  

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

Storage, Conversion and Utilization ; Engineering 13 Connectable solar air collectors Solar Energy Centre Denmark Summary: Connectable solar air collectors Solar Energy Centre...

239

Thermal comfort in naturally-ventilated and air-conditioned classrooms in the tropics.  

E-Print Network [OSTI]

in kindergartens. IAQ '91 Healthy Buildings, Atlanta, GA,kindergartens. in IAQ '91 Healthy Buildings. 1991. Atlanta,in kindergartens. IAQ '91 Healthy Buildings, Atlanta, GA,

Kwok, Alison G

1997-01-01T23:59:59.000Z

240

Effects of ambient humidity on the energy use of air conditioning equipment  

E-Print Network [OSTI]

economizer control with constant supply air temperature seteconomizer control with constant supply air temperature setcontrol under the constraint of constant supply air temperature

White, Justin George

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

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

E-Print Network [OSTI]

that the atmospheric release of certain Halon 1211, Halon 1301, carbon tetrachloride and substances can result ozone were produced by the USA. These chemicals were chlorofluorocarbons (CFCs), halons, carbon tetrachloride and methyl chloroform. Roughly 40% ofthe total production of these ozone-depleting substances

Oak Ridge National Laboratory

242

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

E-Print Network [OSTI]

With the development of wall reforms, the production scale and engineering applications of energy savings are increasing daily. It is inevitable to aggressively extend production of new energy-saving walls. Based on the thermal instantaneous...

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

2006-01-01T23:59:59.000Z

243

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

E-Print Network [OSTI]

of the smart operation strategies. These savings led to a reduction of $1,500 per typical summer day of the MEW fuel bill and 8,918 kg/day of CO2 emissions. To make MC building more energy efficient, it is recommended to retrofit AHUs and secondary chilled...

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

244

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

E-Print Network [OSTI]

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

Wen, Y.; Zhao, F.

2006-01-01T23:59:59.000Z

245

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

E-Print Network [OSTI]

low grade energy, for example, solar energy and surplus or waste heat energy in the industrial process....

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

2006-01-01T23:59:59.000Z

246

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

E-Print Network [OSTI]

of performance?. (Nordtest.) Esbo, Finland. 16. NT VVS 116, 1997. ?Refrigeration and heat pump equipment: Check-ups and performance data inferred from measurements under field conditions in the refrigerant system?. (Nordtest.) Esbo, Finland. ESL-IC-10...

Berglof, K.

2010-01-01T23:59:59.000Z

247

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

SciTech Connect (OSTI)

The performance of air-handling systems in buildings needs to be improved. Many of the deficiencies result from myths and lore and a lack of understanding about the non-linear physical principles embedded in the associated technologies. By incorporating these principles, a few important efforts related to diagnostics and controls have already begun to solve some of the problems. This paper illustrates three novel solutions: one rapidly assesses duct leakage, the second configures ad hoc duct-static-pressure reset strategies, and the third identifies useful intermittent ventilation strategies. By highlighting these efforts, this paper seeks to stimulate new research and technology developments that could further improve air-handling systems.

Wray, Craig; Wray, Craig P.; Sherman, Max H.; Walker, I.S.; Dickerhoff, D.J.; Federspiel, C.C.

2008-02-01T23:59:59.000Z

248

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

E-Print Network [OSTI]

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

Han, Junqiao; Piette, Mary Ann

2008-01-01T23:59:59.000Z

249

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

E-Print Network [OSTI]

temperature variations of solar collector arrays, heat storage tank and adsorption chillers as well as refrigerating output variations of the system. Experimental results show that adsorption chillers have the advantages of low driving temperature, stability...

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

2006-01-01T23:59:59.000Z

250

Development of a high efficiency compressor/expander for an air cycle air conditioning system. Final report  

SciTech Connect (OSTI)

This document presents the methods and procedures used and the results obtained in the design, fabrication, and testing of a rotary vane type compressor operated on air cycle thermodynamics. The history and results of the testing of a similar expander are summarized and the full report of that work is referenced. The machine design used was based on one patented by Ecton Corporation. The goal of the reported effort was to demonstrate the attainable efficiencies of these machines. Appropriate test rigs were assembled and the machines were tested at various operating conditions. The compressor testing did not achieve the full design speed because of time constraints but important data was obtained at 87% speed (3000 rpm). The maximum measured total efficiencies were 78% for the expander and 71% for the compressor. Various design improvements which may yield improved performance were identified and reported.

Summers, R.L.; Smolinski, R.E.

1982-11-15T23:59:59.000Z

251

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

E-Print Network [OSTI]

consumptions. The cooling capacities for WC and AC systems were 373 and 278 tons-of- refrigeration, respectively. It was found that for the same cooling production, the peak power demand and the daily energy consumption of the WC system were 45 and 32% less...

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

2004-01-01T23:59:59.000Z

252

Investigation and Analysis of Energy Consumption and Cost of Electric Air Conditioning Systems in Civil Buildings in Changsha  

E-Print Network [OSTI]

based on the electric refrigeration. Among the heat sources, the prospect of gas boilers is better. In addition, the air source heat pump depends heavily on whether some crucial issues such as frost can be solved during its application. The water-source...

Xie, D.; Chen, J.; Zhang, G.; Zhang, Q.

2006-01-01T23:59:59.000Z

253

Fault tolerant control of outdoor air and AHU supply air temperature in VAV air conditioning systems using PCA method  

Science Journals Connector (OSTI)

This paper presents a fault tolerant control method to control the outdoor air ventilation and AHU supply air temperature, which concerned indoor air quality and humidity, respectively to satisfy ASHRAE Standard in VAV systems. The principal component analysis method, joint angle method, and compensatory reconstruction are used to detect, isolate, and reconstruct the fault, respectively for fault tolerant control. They are tested and evaluated in a simulation environment under the condition of temperature and flow sensors with fix bias faults.

Xinqiao Jin; Zhimin Du

2006-01-01T23:59:59.000Z

254

The impacts of duct design on life cycle costs of central residential heating and air-conditioning systems  

Science Journals Connector (OSTI)

Abstract Many central residential HVAC systems in the U.S. operate at high external static pressures due to a combination of system restrictions. Undersized and constricted ductwork are thought to be key culprits that lead to excess external static pressures in many systems, although the magnitude of energy impacts associated with restrictive ductwork and the costs or benefits associated with addressing the problem are not well known. Therefore, this work uses annual energy simulations of two typical new single-family homes in two separate climates in the United States (Austin, TX and Chicago, IL) to predict the impacts of various external static pressure ductwork designs from independent HVAC contractors (using both flexible and rigid sheet metal ductwork materials) on annual space conditioning energy use. Results from the simulations are combined with estimates of the initial installation costs of each duct design made by each contractor to evaluate the total life cycle costs or savings of using lower pressure duct designs in the two homes over a 15-year life cycle. Lower pressure ductwork systems generally yielded life cycle cost savings, particularly in homes with PSC blowers and particularly when making comparisons with constant ductwork materials (i.e., comparing flex only or rigid only).

Brent Stephens

2014-01-01T23:59:59.000Z

255

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

E-Print Network [OSTI]

? 2? 22 ? 2? 26 ? 2? 27 ? 2? 28 ? ? ? ? ? ? ? ? [k W h/ ? ] (2) Measurements of equipment efficiency and power consumption 0 0.05 0.1 0.15 0.2 0.25 0.3 7? 6? 7? 10 ? 7? 11 ? 7? 12 ? 7? 20 ? 7? 23 ? 7? 24 ? 7? 25 ? 7? 26 ? 7? 27 ? 8? 15 ? 8? 16 ? 8?.../ 27 -0 ? ? ? ? ?k W ) 0 5 10 15 20 25 30 35 12 /3 -0 12 /4 -0 12 /5 -0 12 /6 -0 12 /7 -0 12 /1 0- 0 12 /1 1- 0 12 /1 2- 0 12 /1 3- 0 12 /1 4- 0 12 /1 7- 0 12 /1 8- 0 12 /1 9- 0 12 /2 0- 0 12 /2 1- 0 12 /2 5- 0 12 /2 6- 0 12 /2 7- 0 12 /2 8- 0 1/ 4- 0 1...

Kawano,M.

2014-01-01T23:59:59.000Z

256

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

E-Print Network [OSTI]

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

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

2006-01-01T23:59:59.000Z

257

Discussion on Indoor Design Parameters of Air-Conditioning in the Large Space Building with Considering Comfort and Energy Consumption Based on Nomograms  

Science Journals Connector (OSTI)

World Expo of Shanghai 2010 was held from ... the Bin method was induced to calculate the energy consumption as follows: 21.3 ...

Chen Huang; Ning Cai; Li Shen

2014-01-01T23:59:59.000Z

258

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

E-Print Network [OSTI]

2004) Survey on Electricity Consumption Characteristics ofof residential electricity consumption in rapidly developingbusiness as usual electricity consumption by country/region

McNeil, Michael A.; Letschert, Virginie E.

2008-01-01T23:59:59.000Z

259

Energy conservation in high-rise buildings: Changes in air conditioning load induced by vertical temperature and humidity profile in Delhi  

Science Journals Connector (OSTI)

Temperature and humidity profiles in the upper atmosphere are different from those observed by ground level meteorological stations and used to design HVAC systems for high-rise buildings. There exist correlations among solar energy, atmospheric turbidity and pollutants in urban areas, affecting the temperature and humidity profiles with variation in height. In the present study, a theoretical model is developed considering these parameters, and the HVAC load is calculated. The results are compared with the HVAC load calculated from data obtained from the meteorological station, and the comparison showed that the results differ significantly (20%) for a hypothetical 200 m high office building.

S. Sinha; Sanjay Kumar; N. Kumar

1998-01-01T23:59:59.000Z

260

Development and Verification for the Control Method Using Surplus Pressure of Primary Pumps in Chiller Plant Systems for Air Conditioning which Adopts Primary/Secondary Piping Systems PPT  

E-Print Network [OSTI]

(chiller side) and secondary flow loop (load side). It is a huge energy loss, because the primary pumps use their head to lead much flow to the decoupler. Therefore, we have developed new control method using surplus pressure of the primary pump to reduce...

Matsushita, N.; Fujimura, M.; Sumiyoshi, D.; Akashi, Y.

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

The use of phase change materials in domestic heat pump and air-conditioning systems for short term storage: A review  

Science Journals Connector (OSTI)

Abstract Heat pumps for space heating and cooling are a mature and highly efficient technology that can take advantage of renewable energies. They can also provide energy savings by load shifting when they operate together with thermal energy storage (TES). This paper presents a literature review of TES systems using phase change materials (PCM) potentially applicable to domestic heat pumps used in residential and administrative buildings. The paper describes the systems proposed by the different authors and presents the main conclusions of the studies. The TES systems presented are not only used as energy storage to shift the load demand but also for other applications such as heat recovery or defrosting in air-conditioners. The PCM have the suitable melting temperature to work together with standard heat pumps in each application. Moreover, some systems where the heat pump is coupled to latent heat thermal energy storage (LHTES) units and other energy sources or where the TES system is incorporated in a radiant floor or air distribution system have also been included.

Pere Moreno; Cristian Sol; Albert Castell; Luisa F. Cabeza

2014-01-01T23:59:59.000Z

262

Usage Demographics 2010  

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

0 NERSC Usage Demographics 2010 Academic Usage Usage by Discipline DOE & Other Lab Usage Usage by Institution Type Last edited: 2012-10-30 13:51:35...

263

Actes INRETS n107 207 conf. Environment & Transport, incl. 15th  

E-Print Network [OSTI]

of the auxiliaries and particularly Air Conditioning on emissions (CO2, CO, HC, NOx, and particles) is investigated) and with solar radiation, together with a statistical model. Keys-words: Air Conditioning, auxiliary, emission of auxiliaries. A European Climate Change Programme working group estimated that the usage of air conditioning

Paris-Sud XI, Université de

264

ON THE ROAD TO RESIDENTIAL  

E-Print Network [OSTI]

electricity usage accounts for roughly 22% of the overall energy consumption within the US. Air conditioning use is due to the inefficiencies of your average home air conditioning unit. Though there are many alternative air conditioning options to reduce energy consumption for homes, they have yet to be adopted

California at Davis, University of

265

Metal Buildings - 2014 BTO Peer Review | Department of Energy  

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

the project addresses infiltration issues that can reduce heating, ventilation, and air conditioning (HVAC) building source usage for single-story metal buildings in...

266

Modelling of thermal plume dishcarge into shallow and still water.  

E-Print Network [OSTI]

??The concerns of global warming are guiding most industries and commercial properties towards addressing their energy usage. In large buildings where air conditioning is required, (more)

Ali, Jafar

2011-01-01T23:59:59.000Z

267

NERSC Usage Demographics 2013  

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

3 NERSC Usage Demographics 2013 2013 NERSC Usage by Institution Type (MPP Hours in Millions) 2013 NERSC Usage by Discipline (MPP Hours in Millions) 2013 DOE & Other Lab Usage at...

268

Advanced Editor Usage Advanced Editor Usage  

E-Print Network [OSTI]

Advanced Editor Usage Advanced Editor Usage Log in and click the edit icon How to navigate of the events will seek the video to where that event starts Page 1 of 11 #12;Advanced Editor Usage How Editor Usage 3. Type in the new caption name, enter any searchable metadata and click OK (the thumbnail

Benos, Panayiotis "Takis"

269

Summer is almost upon us. The mercury is going through the roof, and the air-conditioning and gasoline bills are following right behind. What to do, what to do?  

E-Print Network [OSTI]

-Generation Plant This onsite, 12.5-MW natural-gas power plant cogenerates heat and steam that are then utilized. Here, at the Field labora- tory for optimized Wind energy power consumption was about 15 TW in 2008, wind could--in principle--power the entire planet. but one big problem with wind pow- er

270

In search for sustainable globally cost-effective energy efficient building solar system Heat recovery assisted building integrated PV powered heat pump for air-conditioning, water heating and water saving  

Science Journals Connector (OSTI)

Abstract Obtained as a research result of conducted project, this paper presents an innovative, energy efficient multipurpose system for a sustainable globally cost-effective building's solar energy use and developed methodology for its dynamic analysis and optimization. The initial research and development goal was to create a cost-effective technical solution for replacing fossil fuel and electricity with solar energy for water heating for different purposes (for pools, sanitary water, washing) in one SPA. After successful realization of the initial goal, the study was proceeded and as a result, the created advanced system has been enriched with AC performance. The study success was based on understanding and combined measurements and by BPS made predictions of AC loads and solar radiation dynamics as well as on the determination of the synergetic relations between all relevant quantities. Further, by the performed BPS dynamic simulations for geographically spread buildings locations, it has been shown that the final result of the conducted scientific engineering R&D work has been the created system of confirmed prestigious to the sustainability relevant performance globally cost-effective building integrated photovoltaic powered heat pump (HP), assisted by waste water heat recovery, for solar AC, water heating and saving.

Marija S. Todorovic; Jeong Tai Kim

2014-01-01T23:59:59.000Z

271

Computer usage control  

Science Journals Connector (OSTI)

...Article Computer usage control M. M. Lehman * Department of Computing and Control, Imperial...integrated multiple-computer, multiple operating systems, pricing and usage control mechanism. The original version described in this paper, was......

M. M. Lehman

1973-01-01T23:59:59.000Z

272

Usage Statistics By Group  

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

Usage Statistics Usage Statistics Genepool Cluster Statistics Period: daily weekly monthly quarter yearly 2year Utilization By Group Jobs Pending Last edited: 2013-09-26 18:21:13...

273

Usage Codes Vessel name  

E-Print Network [OSTI]

Usage Codes 1 5 2 6 3 7 4 8 Vessel name Int'l radio call sign (IRCS) Generator Other: Max hoisting Sonar Power (Kw) KHz: KHz: VMS Usage Y / N GPS: Internal / external KHz: KHz: Ratio Accuracy (m Incinerator: Burned on board: Net sensors Hull mounted / towed Wired / wireless Y / N Y / N Usage Manufacturer

274

Usage Codes Additional Information  

E-Print Network [OSTI]

Usage Codes 1 5 2 6 3 7 4 8 Additional Information Winches (on deck) Electronics RPM: Max hoistingPresent? Usage Model Ratio Accuracy (m) Type: Electric / Hydraulic / Other _________________ KHz: GPS: Internal Other: Y / N Other: Y / N Y / NOther: Hydrophone Burned on board: Net sensors Usage Manufacturer High

275

Energy Audit Results for Forest City Phase I and Phase II  

E-Print Network [OSTI]

Air Conditioning Observations ...........................................................................................6 Relationship between Temperature and Air Conditioning ............................................7 Relationships between Temperature, Humidity, Comfort, and Energy Consumption for Air Conditioning

276

APS LOM Shop Usage  

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

LOM Shop Usage User Shop Access - Policies and Procedures User Shop Orientation User Shop Authorization Certification Form User Shop Access List LOM Shop Monthly Inspection Record...

277

Interpreting Standard Usage Empirically.  

E-Print Network [OSTI]

??Writers, editors, and everyday language users look to dictionaries, style guides, usage guides, and other published works to help inform their language decisions. They want (more)

Frandsen, Jacob F.

2014-01-01T23:59:59.000Z

278

General Residence Hall Information General Information  

E-Print Network [OSTI]

/dining facilities. Air Conditioning All rooms in Susan Davis Hall are equipped with window air conditioning units

Sheridan, Jennifer

279

Derivative Usage and Performance Volatility  

Science Journals Connector (OSTI)

Derivative usage that reduces return volatility is frequently termed hedging, and derivative usage that increases return volatility is called speculation. ... reduce or increase their return volatility with deriv...

Weiying Jia; Yi Kang

2012-01-01T23:59:59.000Z

280

Total...................................................................  

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

Single-Family Units Single-Family Units Detached Type of Housing Unit Table HC2.7 Air Conditioning Usage Indicators by Type of Housing Unit, 2005 Million U.S. Housing Units Air Conditioning Usage Indicators Attached 2 to 4 Units 5 or More Units Mobile Homes Apartments in Buildings With-- Housing Units (millions) Energy Information Administration 2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables Single-Family Units Detached Type of Housing Unit Table HC2.7 Air Conditioning Usage Indicators by Type of Housing Unit, 2005 Million U.S. Housing Units Air Conditioning Usage Indicators Attached 2 to 4 Units 5 or More Units Mobile Homes Apartments in Buildings With-- Housing Units (millions) At Home Behavior Home Used for Business

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

Investigation of Latent-Heat Storage Systems for Green Building Applications  

Science Journals Connector (OSTI)

In green building applications, highest energy demands are needed for air conditioning to ... heat storage systems during the usage of solar energy and ground-sourced heat pump systems for ... period, analyses sh...

Devrim Aydin; Zafer Utlu; Olcay Kincay

2014-01-01T23:59:59.000Z

282

Dynamic Modeling and Cascaded Control for a Multi-Evaporator Supermarket Refrigeration System  

E-Print Network [OSTI]

The survey from US Department of Energy showed that about one-third of energy consumption in US is due to air conditioning and refrigeration systems. This significant usage of electricity in the HVAC industry has prompted researchers to develop...

Gupta, Ankush 1986-

2012-09-27T23:59:59.000Z

283

September 2013 Most Viewed Documents for Environmental Sciences...  

Office of Scientific and Technical Information (OSTI)

Soil Friday, G. P. (1999) 31 > Ammonia usage in vapor compression for refrigeration and air-conditioning in the United States Fairchild, P.D.; Baxter, V.D. (1995) 30 >...

284

usage_household2001.pdf  

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

Usage Indicators Tables Usage Indicators Tables (Million U.S. Households; 60 pages, 247 kb) Contents Pages HC6-1a. Usage Indicators by Climate Zone, Million U.S. Households, 2001 5 HC6-2a. Usage Indicators by Year of Construction, Million U.S. Households, 2001 5 HC6-3a. Usage Indicators by Household Income, Million U.S. Households, 2001 5 HC6-4a. Usage Indicators by Type of Housing Unit, Million U.S. Households, 2001 5 HC6-5a. Usage Indicators by Type of Owner-Occupied Housing Unit, Million U.S. Households, 2001 5 HC6-6a. Usage Indicators by Type of Rented Housing Unit, Million U.S. Households, 2001 5 HC6-7a. Usage Indicators by Four Most Populated States, Million U.S. Households, 2001 5

285

" Million U.S. Housing Units"  

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

7 Air-Conditioning Usage Indicators by Number of Household Members, 2005" 7 Air-Conditioning Usage Indicators by Number of Household Members, 2005" " Million U.S. Housing Units" ,,"Number of Households With --" ,"Housing Units (millions)" ,,"1 Member","2 Members","3 Members","4 Members","5 or More Members" "Air-Conditioning Usage Indicators" "Total",111.1,30,34.8,18.4,15.9,12 "Do Not Have Cooling Equipment",17.8,5.4,5.3,2.7,2.5,2 "Have Cooling Equipment",93.3,24.6,29.6,15.7,13.4,10 "Use Cooling Equipment",91.4,24,29.1,15.5,13.2,9.7 "Have Equipment But Do Not Use it",1.9,0.6,0.5,"Q",0.2,0.4 "Type of Air-Conditioning Equipment1, 2" "Central System",65.9,15.3,22.6,10.7,9.9,7.3

286

Intron Length and Codon Usage  

Science Journals Connector (OSTI)

...The correlation was shown between the length of introns and the codon usage of the coding sequences of the corresponding ... longer introns show the higher bias of codon usage. It is most pronounced in baker's...

Alexander E. Vinogradov

2001-01-01T23:59:59.000Z

287

Usage by Job Size  

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

Usage by Job Usage by Job Size Table Usage by Job Size Table page loading animation Usage Query Interface System All Hopper Edison Carver Planck Matgen Franklin Hopper 1 Magellan Dirac Bassi Jacquard Seaborg User Account (Repo) Execution Queue All Debug Interactive Premium Regular Short Regular Long Regular Small Regular Medium Regular Big Regular Extra Big Killable Low Transfer IO Task Special System Serial Big Memory Westmere === Inactive === Magellan Serial Magellan Short Magellan Small Magellan Medium Magellan Big Magellan Long Regular 1 Regular 1 Long Regular 16 Regular 32 Regular 48 Full Config Seaborg Serial Batch 16 Batch 32 Batch 64 Submit Queue all interactive debug premium regular low DOE Office all ASCR BER BES FES HEP NP Summary for jobs that completed after Jan Feb Mar Apr May Jun July Aug Sep Oct Nov Dec 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 @ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 : 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59

288

The economic burden of sunscreen usage  

E-Print Network [OSTI]

Economic Burden of Sunscreen Usage Ritika Johal 1 , Michaelprice per ounce. Sunscreen Usage To estimate the daily use

Johal, Ritika; Leo, Michael S; Ma, Brian; Sivamani, Raja K

2014-01-01T23:59:59.000Z

289

HPSS Usage Examples at NERSC  

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

Examples Advanced Usage Examples Transferring Data from Batch Jobs Once you have set up your automatic HPSS authentication you can access HPSS within batch scripts. Read More ...

290

Memory Usage Considerations on Franklin  

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

Memory Considerations Memory Considerations Memory Usage Considerations on Franklin Each Franklin compute node has 8 GB (8192 MB) of physical memory, but, not all that memory is...

291

START Alaska Historical Energy Usage Spreadsheet | Department...  

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

Alaska Historical Energy Usage Spreadsheet START Alaska Historical Energy Usage Spreadsheet Communities applying for the DOE Office of Indian Energy Strategic Technical Assistance...

292

C3Bio.org - Usage: Overview  

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

(.jpg, .jpeg, .jpe, .bmp, .tif, .tiff, .png, .gif) Submit You are here: Home Usage Overview Prior 12 Months Usage: Overview Overview Maps Prior 12 Months By...

293

C3Bio.org - Usage: Maps  

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

(.jpg, .jpeg, .jpe, .bmp, .tif, .tiff, .png, .gif) Submit You are here: Home Usage Maps Users Currently Online Usage: Maps Overview Maps Users Currently Online...

294

C3Bio.org - Usage: Overview  

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

(.jpg, .jpeg, .jpe, .bmp, .tif, .tiff, .png, .gif) Submit You are here: Home Usage Overview By Month Usage: Overview Overview Maps Prior 12 Months By Month By...

295

C3Bio.org - Usage: Overview  

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

(.jpg, .jpeg, .jpe, .bmp, .tif, .tiff, .png, .gif) Submit You are here: Home Usage Overview By Quarter Usage: Overview Overview Maps Prior 12 Months By Month By...

296

C3Bio.org - Usage: Overview  

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

(.jpg, .jpeg, .jpe, .bmp, .tif, .tiff, .png, .gif) Submit You are here: Home Usage Overview By Fiscal Year Usage: Overview Overview Maps Prior 12 Months By Month...

297

Report on Activities And Usage Statistics of  

E-Print Network [OSTI]

Report on Activities And Usage Statistics of Learning Technology Center Services and Facilities And Usage Statistics of Learning Technology Center Services and Facilities 2009-2010 The purpose

Patzek, Tadeusz W.

298

C3Bio.org - Usage: Overview  

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

(.jpg, .jpeg, .jpe, .bmp, .tif, .tiff, .png, .gif) Submit You are here: Home Usage Overview By Calendar Year Usage: Overview Overview Maps Prior 12 Months By...

299

Memory Usage Considerations on Hopper  

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

Memory Considerations Memory Considerations Memory Usage Considerations on Edison Edison compute nodes have 64 GB of physical memory (2.67GB per core), but, not all that memory is...

300

Dirty Air Conditioners: Energy Implications of Coil Fouling Jeffrey Siegel, Lawrence Berkeley National Laboratory/ UC Berkeley  

E-Print Network [OSTI]

Berkeley National Laboratory ABSTRACT Residential air conditioning is responsible for a substantial amount greater for marginal systems or extreme conditions. These energy issues, as well as possible indoor air conditioning commissioning and maintenance practices. Introduction Residential air conditioning is responsible

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

Policy Options Workshop Accelerating Energy Efficiency Improvements In Commercial Buildings November 29, 2011  

E-Print Network [OSTI]

of Heating, Refrigerating and Air-Conditioning Engineers Karim Amrane Air-Conditioning, Heating, Refrigerating and Air-Conditioning Engineers Xiaojing Sun Georgia Institute of Technology Cody Taylor Department

Oak Ridge National Laboratory

302

Next Generation Rooftop Unit | Department of Energy  

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

Generation Rooftop Unit A typical commercial rooftop air-conditioning unit (RTU) Credit: Oak Ridge National Lab A typical commercial rooftop air-conditioning unit (RTU) Credit:...

303

China Energy Efficiency Round Robin Testing Results for Room Air Conditioners  

E-Print Network [OSTI]

check in the air conditioning products category is indicatednumber of domestic air conditioning product manufacturers100 million worth of air conditioner products to 14 major

Zhou, Nan

2010-01-01T23:59:59.000Z

304

White Paper on Energy Efficiency Status of Energy-Using Products in China (2012)  

E-Print Network [OSTI]

of household air conditioning products. 1.2.2 IndustrialIn 2011, the room air conditioner products (not includingenergy efficient products in multi-split air conditioning (

Zhou, Nan

2013-01-01T23:59:59.000Z

305

Benchmarking MapReduce Implementations for Application Usage Scenarios  

E-Print Network [OSTI]

Implementations for Application Usage Scenarios Zachariareal- world application usage scenarios, including data-implementations under different usage scenarios. We link the

Fadika, Zacharia

2013-01-01T23:59:59.000Z

306

Agriculture and Life Sciences Complex Usage Guidelines  

E-Print Network [OSTI]

Agriculture and Life Sciences Complex Usage Guidelines General Policies 1. Pursuant to Texas A Sciences Complex Usage Request Form and submit a copy to the building manager, Paul Gregg (phone: 979-777-2766, email: paul.gregg@ag.tamu.edu, office: AGLS 517F). The AGLS-ALCT Usage Request Form can be found at

307

usage  

Science Journals Connector (OSTI)

This one-of-a-kind reference is unmatched in the breadth and scope of its coverage and serves as the primary reference for students and professionals in computer science and communications. The Dictionary feat...

2001-01-01T23:59:59.000Z

308

Creativity in IS usage and workgroup performance: The mediating role of ambidextrous usage  

Science Journals Connector (OSTI)

Abstract Creativity in the use of information systems (IS) is critical to the performance and long-term success of organizations. Building on an organizational ambidexterity perspective, we investigate ambidexterity in IS usage which is defined as the capacity to simultaneously achieve exploitative usage and explorative usage at a workgroup level. This paper seeks to test the relationships among creative process, usage ambidexterity, and group performance. Based on a sample of 55 workgroups, we found that exploitative usage negatively influences usage ambidexterity while explorative usage positively influences it, and that usage ambidexterity positively influences group performance. Moreover, the findings indicate that usage ambidexterity mediates the effect of exploitative and explorative usage on group performance. Overall, the study contributes to greater clarity and a better understanding of how the creative process influences group performance.

Yumei Luo; Cheng Zhang; Yunjie Xu; Hong Ling

2015-01-01T23:59:59.000Z

309

NEWTON: Blood Group Systems Usage  

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

Blood Group Systems Usage Blood Group Systems Usage Name: Kishori Status: student Grade: n/a Location: Outside U.S. Country: India Date: Summer 2013 Question: What is the difference between MN blood group system and ABO bloodgroup system? Although, we nowadays prefer ABO blood groups why do we use MN blood groups in the forensic department? Replies: Humans actually have multiple blood antigens on the surface of our blood cells. Wikipedia says that there are over 50 different blood group antigens. ABO and Rh are just the most dominant. Rh actually has 3 alleles called C, D and E. So one could be CCddee, for example, but clinically, when referring to Rh, only the D antigen is considered. So MN is another system that is also present. The reason it would be considered in forensics is due to population genetics considerations. Certain combinations are found in different percentages depending on what ancestry a person is a part of. Humans evolved in isolation from each other and until relatively recently, were separated due to difficult travel/migration. But even though we can move around the planet easily now, we still carry the history of our ancestry in our DNA. M and N are codominant, like the ABO system.

310

LHCb Computing Resource usage in 2014 (I)  

E-Print Network [OSTI]

This documents summarizes the usage of computing resources by the LHCb collaboration during the period January 1st- July 31st 2014.

Bozzi, C

2014-01-01T23:59:59.000Z

311

WebUser: mining unexpected web usage  

Science Journals Connector (OSTI)

Web usage mining has been much concentrated on the discovery of relevant user behaviours from web access record data. In this paper, we present WebUser, an approach to discover unexpected usage in web access log. We present a belief-driven method for extracting unexpected web usage sequences, where the belief system consists of a temporal relation and semantics constrained sequence rules acquired with respect to prior knowledge. Our experiments show the effectiveness and usefulness of the proposed approach. Furthermore, discovered rules of unexpected web usage can be used for web content personalisation and recommendation, site structure optimisation and critical event prediction.

Dong Li; Anne Laurent; Pascal Poncelet

2011-01-01T23:59:59.000Z

312

Evolution of codon usage in bacteria.  

E-Print Network [OSTI]

??Initially, this thesis investigates patterns of intragenomic codon usage within the genome of the Delta Proteobacterium Bdellovibrio bacteriovorus. Correspondence analyses revealed the primary factor influencing (more)

Henry, Ian

2007-01-01T23:59:59.000Z

313

On the evolution of codon usage bias.  

E-Print Network [OSTI]

??The genetic code is redundant, with most amino acids coded by multiple codons. In many organisms, codon usage is biased towards particular codons. A variety (more)

Shah, Premal R

2011-01-01T23:59:59.000Z

314

Effects of environmental prompts on stair usage.  

E-Print Network [OSTI]

??The objective of this study was to evaluate whether environmental prompts placed in two-story buildings on a university campus would increase stair usage. Three buildings (more)

Andersen, Lori

2010-01-01T23:59:59.000Z

315

Usage Policies for Decentralised Information Processing.  

E-Print Network [OSTI]

??Owners impose usage restrictions on their information, which can be based e.g. on privacy laws, copyright law or social conventions. Often, information is processed in (more)

Speiser, Sebastian

2013-01-01T23:59:59.000Z

316

Memory Usage Considerations on Hopper  

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

Memory Considerations Memory Considerations Memory Considerations Memory Usage Considerations on Hopper Most Hopper compute nodes have 32 GB of physical memory, but, not all that memory is available to user programs. Compute Node Linux (the kernel), the Lustre file system software, and message passing library buffers all consume memory, as does loading the executable into memory. Thus the precise memory available to an application varies. Approximately 31 GB of memory can be allocated from within an MPI program using all 24 cores per node, i.e., 1.29 GB per MPI task on average. If an application uses 12 MPI tasks per node, then each MPI task could use about 2.58 GB of memory. You may see an error message such as "OOM killer terminated this process." "OOM" means Out of Memory and it means that your code has exhausted the

317

Codon usage divergence of homologous vertebrate genes and codon usage clock  

Science Journals Connector (OSTI)

This paper is concerned with the divergence of synonymous codon usage and its bias in three homologous genes ... species are described in terms of synonymous codon usage divergence and the correlation is found be...

Manyuan Long; John H. Gillespie

1991-01-01T23:59:59.000Z

318

Systems and methods for controlling energy use in a building management system using energy budgets  

SciTech Connect (OSTI)

Systems and methods for limiting power consumption by a heating, ventilation, and air conditioning (HVAC) subsystem of a building are shown and described. A mathematical linear operator is found that transforms the unused or deferred cooling power usage of the HVAC system based on pre-determined temperature settings to a target cooling power usage. The mathematical operator is applied to the temperature settings to create a temperature setpoint trajectory expected to provide the target cooling power usage.

Wenzel, Michael J.

2012-06-17T23:59:59.000Z

319

Slide 1  

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

& Telecommunications * Engineering & Engineering Technology * Geographic Information Systems * Heating, Ventilation, and Air Conditioning * Welding OTHER PROGRAMS SUPPORTING...

320

NREL: Business Opportunities - Small Business Vendor or Subcontractor...  

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

& Interpretation Services Transportation Transportation Technology Travel Services Utilities Vending Machine Services Ventilation, Heating, Air Conditioning Warehousing &...

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

University of Florida Cell Phone Usage Log  

E-Print Network [OSTI]

University of Florida Cell Phone Usage Log Information below must be compared to the monthly statement provided by the cell phone service provider. It is required that this log be completed when of the last page of the usage log. Employee's Name:Business Device - Cell Phone Number: Printed Name

Sin, Peter

322

Federal Energy Management Program: New and Underutilized Heating,  

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

Heating, Ventilation, and Air Conditioning Technologies to Heating, Ventilation, and Air Conditioning Technologies to someone by E-mail Share Federal Energy Management Program: New and Underutilized Heating, Ventilation, and Air Conditioning Technologies on Facebook Tweet about Federal Energy Management Program: New and Underutilized Heating, Ventilation, and Air Conditioning Technologies on Twitter Bookmark Federal Energy Management Program: New and Underutilized Heating, Ventilation, and Air Conditioning Technologies on Google Bookmark Federal Energy Management Program: New and Underutilized Heating, Ventilation, and Air Conditioning Technologies on Delicious Rank Federal Energy Management Program: New and Underutilized Heating, Ventilation, and Air Conditioning Technologies on Digg Find More places to share Federal Energy Management Program: New and

323

UC Libraries Academic e-Book Usage Survey  

E-Print Network [OSTI]

Libraries Academic e-Book Usage Survey Springer e-Book Pilotnot sure of their e-book usage. Of those reporting not usinge-journals. Variations in e-book usage in academic work are

Li, Chan; Poe, Felicia; Potter, Michele; Quigley, Brian; Wilson, Jacqueline

2011-01-01T23:59:59.000Z

324

Division of Housing & Food Service Division of Student Affairs  

E-Print Network [OSTI]

and manufactured with electricity that is offset with Green-eR certified renewable energy certificates. Remote and other items. All tree limbs at the University apartments are diverted from the landfill by chipping them through our buildings for air conditioning and will significantly reduce the energy usage in these dining

Hofmann, Hans A.

325

RoomZoner: Occupancy-based Room-Level Zoning of a Centralized HVAC System  

E-Print Network [OSTI]

RoomZoner: Occupancy-based Room-Level Zoning of a Centralized HVAC System Tamim Sookoor & Kamin. In this paper we present a CPS that enables a centralized Heating, Ventila- tion, and Air Conditioning (HVAC application due to residential HVAC systems ac- counting for over 15% of all U.S. energy usage, making it one

Whitehouse, Kamin

326

Universality and Shannon entropy of codon usage  

Science Journals Connector (OSTI)

The distribution functions of codon usage probabilities, computed over all the available GenBank data for 40 eukaryotic biological species and five chloroplasts, are best fitted by the sum of a constant, an exponential, and a linear function in the rank of usage. For mitochondria the analysis is not conclusive. These functions are characterized by parameters that strongly depend on the total guanine and cytosine (GC) content of the coding regions of biological species. It is predicted that the codon usage is the same in all exonic genes with the same GC content. The Shannon entropy for codons, also strongly dependent on the exonic GC content, is computed.

L. Frappat; C. Minichini; A. Sciarrino; P. Sorba

2003-12-24T23:59:59.000Z

327

C3Bio.org - Resources: Workspace: Usage  

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

.tiff, .png, .gif) Submit You are here: Home Resources Tools Workspace Usage 0 questions (Ask a question) 0 review(s) (Review this) 24 users, detailed usage 0...

328

VEHICLE USAGE LOG Department ________________________________________ Vehicle Homebase ____________________________ Week Ended (Sunday) _________________  

E-Print Network [OSTI]

VEHICLE USAGE LOG Department ________________________________________ Vehicle Homebase (rev. 10/2005-ecb) #12;Vehicle Usage Log Instructions General instructions: The details of the use

Yang, Zong-Liang

329

Recent Trends in Car Usage in Advanced Economies - Slower Growth...  

Open Energy Info (EERE)

Trends in Car Usage in Advanced Economies - Slower Growth Ahead? Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Recent Trends in Car Usage in Advanced Economies -...

330

General Guidance on Data Usage and Management  

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

General Guidance on Data Usage and Management General Guidance on Data Usage and Management Summary Data Usage Credit Data Management and Documentation: Introduction Our philosophy Data management Record measured values Zero versus missing value Metadata Data documentation Define variables Specify units Provide citations For additional information Summary Ensure long-term preservation of, and full and open access to, high-quality data sets Give proper credit to the researchers providing the data Provide thorough, yet simple, documentation: how the data were produced, what they mean Generate ASCII data and documentation files; they ensure readibility by virtually all users Define variable names and units Point to, or provide, important publications that further document the data Data usage CDIAC fully supports the July 1991 Policy Statements on Data Management for

331

Social Influence Modeling on Smartphone Usage  

Science Journals Connector (OSTI)

This paper presents a probabilistic influence model for smartphone usage; it applies a latent group model to social influence. The probabilistic model is built on the assumption that a time series of students...

Masaji Katagiri; Minoru Etoh

2011-01-01T23:59:59.000Z

332

Parallel File Systems at HPC Centers: Usage,  

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

File Systems at HPC Centers: Usage, Experiences, and Recommendations William ( Bill) E . A llcock ALCF D irector o f O pera:ons Production Systems: ALCF-2 2 Mira - B GQ s ystem -...

333

Material impacts on operational energy usage  

E-Print Network [OSTI]

Decisions regarding materials and construction of a building are made all the time in the architectural process, but thought is not always given to how those choices may affect the buildings ultimate energy usage and the ...

Love, Andrea, S.M. Massachusetts Institute of Technology

2011-01-01T23:59:59.000Z

334

Electrical Usage Characterization of Semiconductor Processing Tools  

E-Print Network [OSTI]

ELECTRICAL USAGE CHARACTERIZATION OF SEMICONDUCTOR PROCESSING TOOLS Scott R. Hinson Associate Engineer Radian Electronic Systems 15705 Long Vista Drive Austin, TX 78751 Abstract This paper presents the basic concepts in performing... be completed using as much detail as possible. The most often cited reason for aUditing process tools is the large discrepancy between the facilities requirements listed on the tool nameplate and the actual measured usage. I have measured systems...

Hinson, S. R.

335

Predicting Energy Usage in a Supermarket  

E-Print Network [OSTI]

PREDICTING ENERGY USAGE IN A SUPERMARKET Derek W. Schrock and David E. Claridge Energy Systems Laboratory Mechanical Engineering Department Texas A&M University ABSTRACT Very little is known about the energy using systems in commercial..., solar radiation, lighting and other internal loads [8] and (2) a regression model, with temperature and customer count as variables, to predict the end-use energy usage in restaurants [9]. There has also been specific work accomplished studying...

Schrock, D. W.; Claridge, D. E.

1989-01-01T23:59:59.000Z

336

How Usage is Charged at NERSC  

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

usage usage is charged How usage is charged MPP Charging (Computational Systems) When a job runs on a NERSC MPP system, such as Hopper, charges accrue against one of the user's repository allocations. The unit of accounting for these charges is the "MPP Hour". A parallel job is charged for exclusive use of each multi-core node allocated to the job. The MPP charge for such a job is calculated as the product of: the job's elapsed wall-clock time in hours, the number of nodes allocated to the job (regardless of the number actually used), the number of cores available on each allocated node, a machine charge factor (MCF) based on typical performance of the machine relative to Hopper (MCF=1.0), and a queue charge factor (QCF). Queue priority scheduling gives users

337

A portal for visualizing grid usage.  

SciTech Connect (OSTI)

We introduce a framework for measuring the use of Grid services and exposing simple summary data to an authorized set of Grid users through a JSR168-enabled portal. The sensor framework has been integrated into the Globus Toolkit and allows Grid administrators to have access to a mechanism helping with report and usage statistics. Although the original focus was the reporting of actions in relationship to GridFTP services, the usage service has been expanded to report also on the use of other Grid services.

von Laszewski, G.; DiCarlo, J.; Allcock, B.; Mathematics and Computer Science; Univ. of Chicago

2007-08-25T23:59:59.000Z

338

" Million Housing Units, Final"  

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

7 Air Conditioning in U.S. Homes, by Census Region, 2009" 7 Air Conditioning in U.S. Homes, by Census Region, 2009" " Million Housing Units, Final" ,,"Census Region" ,"Total U.S.1 (millions)" ,,"Northeast","Midwest","South","West" "Air Conditioning" "Total Homes",113.6,20.8,25.9,42.1,24.8 "Air Conditioning Equipment" "Use Air Conditioning Equipment",94,16.5,22.4,40.5,14.6 "Have Air Conditioning Equipment But" "Do Not Use It",4.9,1.4,1.2,0.9,1.4 "Do Not Have Air Conditioning Equipment",14.7,2.8,2.3,0.7,8.9 "Type of Air Conditioning Equipment " "Used (more than one may apply)" "Use Central Air Conditioning Equipment",69.7,7.2,17.1,34.6,10.8

339

Social influence modeling on smartphone usage  

Science Journals Connector (OSTI)

This paper presents a probabilistic influence model for smartphone usage; it applies a latent group model to social influence. The probabilistic model is built on the assumption that a time series of students' application downloads and activations can ... Keywords: NMF, behavior prediction, latent structure analysis, matrix factorization, mobile application, recommendation, user influence

Masaji Katagiri; Minoru Etoh

2011-12-01T23:59:59.000Z

340

Jadeite: Improving API Documentation Using Usage Information  

E-Print Network [OSTI]

Jadeite: Improving API Documentation Using Usage Information Abstract Jadeite is a new Javadoc-like API documentation sys- tem that takes advantage of multiple users' aggregate experience to reduce difficulties that programmers have learning new APIs. Previous studies have shown that programmers often

Myers, Brad A.

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

Reducing the Energy Usage of Oce Applications  

E-Print Network [OSTI]

to distill multimedia content from presentations stored on remote servers, we reduce the energy neededReducing the Energy Usage of O?ce Applications Jason Flinn 1 , Eyal de Lara 2 , M. Satyanarayanan 1 University Abstract. In this paper, we demonstrate how component-based mid- dleware can reduce the energy

Flinn, Jason

342

C3Bio.org - Resources: Quantum Dot Lab: Usage  

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

.png, .gif) Submit You are here: Home Resources Tools Quantum Dot Lab Usage 0 questions (Ask a question) 0 review(s) (Review this) 15 users, detailed usage 0...

343

Transportation & Work: Exploring Car Usage and Employment Outcomes  

E-Print Network [OSTI]

Transportation & Work: Exploring Car Usage and Employment Outcomes in the LSAL Data Field Area networks. This analysis addresses the role of car usage in employment outcomes such as employment status

Bertini, Robert L.

344

Attachment 2 NSTX Data Usage and Publication Agreement  

E-Print Network [OSTI]

Attachment 2 NSTX Data Usage and Publication Agreement NSTX Research is carried out by a multi agrees to adhere to the following guidelines of the NSTX data usage and results publication. 1

Princeton Plasma Physics Laboratory

345

Attachment 2 NSTX Data Usage and Publication Agreement  

E-Print Network [OSTI]

Attachment 2 NSTX Data Usage and Publication Agreement NSTX is an open, fundamental research of the NSTX data usage and results publication. 1) No Research Team member will be given direct access

Princeton Plasma Physics Laboratory

346

Green Button Helps More Consumers Click with Their Energy Usage...  

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

Button Helps More Consumers Click with Their Energy Usage Data Green Button Helps More Consumers Click with Their Energy Usage Data September 12, 2013 - 2:41pm Addthis At the White...

347

Insecticide-treated net (ITN) ownership, usage, and malaria transmission in the highlands of western Kenya  

E-Print Network [OSTI]

treated net (ITN) ownership, usage, and malaria transmissionand mortality. However, usage varies among households, andsuch variations in actual usage may seriously limit the

2011-01-01T23:59:59.000Z

348

Availability, usage and expected contribution of potential nursery habitats for the California halibut  

E-Print Network [OSTI]

locate/ecss Availability, usage and expected contribution ofas well as the distribution (usage) of juvenile ?sh withinof ju- venile ?sh (usage) within those habitats. In this

Fodrie, Fredrick Joel; Mendoza, Guillermo F.

2006-01-01T23:59:59.000Z

349

The Impact of Residential Density on Vehicle Usage and Energy Consumption  

E-Print Network [OSTI]

Residential Density on Vehicle Usage and Energy ConsumptionType Choice, and Fuel Usage Total annual residentialResidential Density on Vehicle Usage and Energy Consumption

Golob, Thomas F.; Brownstone, David

2005-01-01T23:59:59.000Z

350

Structural proteomics of minimal organisms: conservation of protein fold usage and evolutionary implications  

E-Print Network [OSTI]

e A) Variation in fold usage between organisms, in differentB) Variation in fold usage between minimal organisms onlyConservation of protein fold usage and evolutionary

Chandonia, John-Marc; Kim, Sung-Hou

2006-01-01T23:59:59.000Z

351

Mining data on usage of electronic nicotine delivery systems (ENDS) from YouTube videos  

E-Print Network [OSTI]

Research paper Mining data on usage of electronic nicotineresource for studying ENDS usage. Longer puff duration mayof nicotine to make ENDS usage attractive. We have tested

Talbot, Prue

2013-01-01T23:59:59.000Z

352

The Impact of Residential Density on Vehicle Usage and Energy Consumption  

E-Print Network [OSTI]

Residential Density on Vehicle Usage and Energy ConsumptionResidential Density on Vehicle Usage and Energy ConsumptionResidential Density on Vehicle Usage and Energy Consumption

Golob, Thomas F; Brownstone, David

2005-01-01T23:59:59.000Z

353

A Decision-Based Analysis of Compressed Air Usage Patterns in Automotive Manufacturing  

E-Print Network [OSTI]

Analysis of Compressed Air Usage Patterns in Automotivefor future compressed air usage. The Cost-of-Ownership andfuture compressed air usage. Environmental Value systems (

Yuan, Chris; Zhang, Teresa; Rangarajan, Arvind; Dornfeld, David; Ziemba, Bill; Whitbeck, Rod

2006-01-01T23:59:59.000Z

354

Cognitive Structures Underlying Gendered Language Usage in Germany: Narration and Linguistic Fieldwork  

E-Print Network [OSTI]

Underlying Gendered Language Usage in Germany: Narration andUnderlying Gendered Language Usage in Germany: Narration andUnderlying Gendered Language Usage in Germany: Narration and

Kolar, Meredith

2011-01-01T23:59:59.000Z

355

The impact of residential density on vehicle usage and fuel consumption  

E-Print Network [OSTI]

residential density on vehicle usage and energy consumption.of residential density on vehicle usage and fuel consumptionresidential density on vehicle usage and fuel consumption*

Kim, Jinwon; Brownstone, David

2010-01-01T23:59:59.000Z

356

Practices, Trends, and Recommendations in Technical Appendix Usage for Selected Data-Intensive Disciplines  

E-Print Network [OSTI]

IN TECHNICAL APPENDIX USAGE FOR SELECTED DATA?INTENSIVEIN TECHNICAL APPENDIX USAGE FOR SELECTED DATA?INTENSIVEIN TECHNICAL APPENDIX USAGE FOR SELECTED DATA?INTENSIVE

2011-01-01T23:59:59.000Z

357

Nonlinear seismic ground response analysis: code usage protocols and verification against vertical array data  

E-Print Network [OSTI]

Response Analysis: Code Usage Protocols and Verificationparameter selection and code usage protocols as well aslinear modeling. Regarding code usage/parameter selection

Stewart, Jonathan P; Kwok, Annie O.L.

2008-01-01T23:59:59.000Z

358

Influences, usage, and outcomes of Internet health information searching: Multivariate results from the Pew surveys  

E-Print Network [OSTI]

INFLUENCES, USAGE, AND OUTCOMES OF INTERNET HEALTHR.E. (2006). Influences, usage, and outcomes of InternetSeeking, p-3 INFLUENCES, USAGE, AND OUTCOMES OF INTERNET

Rice, Ronald E

2006-01-01T23:59:59.000Z

359

Multi-dimensional Exploration of API Usage  

E-Print Network [OSTI]

AbstractThis paper is concerned with understanding API usage in a systematic, explorative manner for the benefit of both API developers and API users. There exist complementary, less explorative methods, e.g., based on code search, code completion, or API documentation. In contrast, our approach is highly interactive and can be seen as an extension of what IDEs readily provide today. Exploration is based on multiple dimensions: i) the hierarchically organized scopes of projects and APIs; ii) metrics of API usage (e.g., number of project classes extending API classes); iii) metadata for APIs; iv) project- versus API-centric views. We also provide the QUAATLAS corpus of Java projects which enhances the existing QUALITAS corpus to enable APIusage analysis. We implemented the exploration approach in an

Coen De Roover; Ralf Lmmel; Ekaterina Pek

360

Demand and Usage in Scotland Update Report to March 2008  

E-Print Network [OSTI]

Woodfuel Demand and Usage in Scotland Update Report to March 2008 #12;Woodfuel Use Update Woodfuel Demand and Usage in Scotland 2008 Contents: 1. The brief 2. Methodology 3. Results 3.1. Operational ­ May 2005" (unpublished report on existing and potential woodfuel usage in the commercial, industrial

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

DSK: k-mer counting with very low memory usage  

Science Journals Connector (OSTI)

......k-mer counting with very low memory usage Guillaume Rizk 1 Dominique Lavenier 2 Rayan...function of the desired memory and disk usage. In Section 3, DSK is used to count all...sequences, k-mer length k, target memory usage M (bits), target disk space D (bits......

Guillaume Rizk; Dominique Lavenier; Rayan Chikhi

2013-03-01T23:59:59.000Z

362

Usage Codes Observer code Vessel code Trip ID  

E-Print Network [OSTI]

Usage Codes 1 5 2 6 3 7 4 8 Observer code Vessel code Trip ID Permit holder name/address Permit / N MMSI No. Y / N Present? Usage Water capacity (m3): Fuel capacity: m3 / tonnes Other: Other: Kw all that apply & note types of materials for each) Capacity: Usage Incinerator: Net mensuration Y / N

363

Use and misuse of correspondence analysis in codon usage studies  

E-Print Network [OSTI]

Use and misuse of correspondence analysis in codon usage studies Guy PerrieÁre* and Jean Thioulouse; Accepted August 22, 2002 ABSTRACT Correspondence analysis has frequently been used for codon usage studies but this method is often misused. Because amino acid composition exerts constraints on codon usage, it is common

Thioulouse, Jean

364

Usage Codes Observer code Vessel code Trip ID  

E-Print Network [OSTI]

Usage Codes 1 5 2 6 3 7 4 8 Sonar Observer code Vessel code Trip ID Additional Information KHz: RPM / Other _______________Global Registry ID:MMSI No. Permit expiration (dd-mm- yy): Y / N Present? Usage contact Diver / dive equipment Usage Manufacturer Hull mounted / towed Catch Y / N Other: Y / N Y / NOther

365

Codon Usage and tRNA Genes in Eukaryotes: Correlation of Codon Usage Diversity with Translation Efficiency and with CG-Dinucleotide Usage as Assessed by Multivariate Analysis  

Science Journals Connector (OSTI)

The species-specific diversity of codon usage in five eukaryotes (Schizosaccharomyces pombe, Caenorhabditis elegans, Drosophila melanogaster, Xenopus laevis, and Homo sapiens) was investigated with principal com...

Shigehiko Kanaya; Yuko Yamada; Makoto Kinouchi

2001-10-01T23:59:59.000Z

366

" Million Housing Units, Final"  

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

Air Conditioning in U.S. Homes, by Housing Unit Type, 2009" Air Conditioning in U.S. Homes, by Housing Unit Type, 2009" " Million Housing Units, Final" ,,"Housing Unit Type" ,,"Single-Family Units",,"Apartments in Buildings With" ,"Total U.S.1 (millions)" ,," Detached"," Attached"," 2 to 4 Units","5 or More Units","Mobile Homes" "Air Conditioning" "Total Homes",113.6,71.8,6.7,9,19.1,6.9 "Air Conditioning Equipment" "Use Air Conditioning Equipment",94,61.1,5.6,6.3,15.2,5.8 "Have Air Conditioning Equipment But" "Do Not Use It",4.9,2.6,0.2,0.7,0.9,0.4 "Do Not Have Air Conditioning Equipment",14.7,8.1,0.9,2.1,3,0.7 "Type of Air Conditioning Equipment "

367

" Million Housing Units, Final"  

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

4 Air Conditioning in U.S. Homes, by Number of Household Members, 2009" 4 Air Conditioning in U.S. Homes, by Number of Household Members, 2009" " Million Housing Units, Final" ,,"Number of Household Members" ,"Total U.S.1 (millions)" ,,,,,,"5 or More Members" "Air Conditioning",,"1 Member","2 Members","3 Members","4 Members" "Total Homes",113.6,31.3,35.8,18.1,15.7,12.7 "Air Conditioning Equipment" "Use Air Conditioning Equipment",94,24.6,30.2,15.1,13.5,10.6 "Have Air Conditioning Equipment But" "Do Not Use It",4.9,1.7,1.5,0.7,0.6,0.5 "Do Not Have Air Conditioning Equipment",14.7,5,4.1,2.3,1.7,1.7 "Type of Air Conditioning Equipment "

368

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

E-Print Network [OSTI]

In this paper, we briefly introduce the super cold air distribution technique. By comparing the schemes of two air conditioning systems, including a modified air conditioning system, this paper analyzes the technique parameters and the economics...

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

2006-01-01T23:59:59.000Z

369

The planned Brazilian indoor radon surveyconcepts and particular challenges  

Science Journals Connector (OSTI)

......tropical zones to arid in the North-East. Air conditioning is increasingly common in...infiltration and accumulation; role of air-conditioning systems; possible function...Statistical Methods for Environmental Pollution Monitoring (1987) J. Wiley. ISBN......

N. C. Da Silva; P. Bossew

2014-11-01T23:59:59.000Z

370

851 S.W. Sixth Avenue, Suite 1100 Steve Crow 503-222-5161 Portland, Oregon 97204-1348 Executive Director 800-452-5161  

E-Print Network [OSTI]

­­ Increase saturation of central air conditioningIncrease saturation of central air conditioning Baseline a brief review of its assessment of the conservation potential in residential space conditioning (heating

371

Applying a Domestic Water-cooled Air-conditioner in Subtropical Cities  

E-Print Network [OSTI]

Water-cooled air-conditioning systems (WACS) are in general more energy efficient than air-cooled air-conditioning systems (AACS), especially in subtropical climates where the outdoor air is hot and humid. Related studies focused on evaluating...

Lee, W.; Chen, H.

2006-01-01T23:59:59.000Z

372

Notice Type: Presolicitation  

E-Print Network [OSTI]

/A Set Aside: N/A Classification Code: 41 -- Refrigeration, air-conditioning & air circulating equipment NAICS Code: 333 -- Machinery Manufacturing/333415 -- Air-Conditioning and Warm Air Heating Equipment

373

Kylteknik ("KYL")Kylteknik ("KYL") RefrigerationRefrigerationRefrigerationRefrigeration  

E-Print Network [OSTI]

; Gas processing (O2, H2, CO2, LPG, LNG...) (3) Air conditioning, cooling towers, rg/pages/zon Air conditioning, cooling towers, food cooling and freezing (4) Heat pumps, heat pipes, special ww.sgisland.o p p

Zevenhoven, Ron

374

HOUSEHOLD RESPONSE TO DYNAMIC PRICING OF ELECTRICITY A SURVEY OF SEVENTEEN PRICING EXPERIMENTS  

E-Print Network [OSTI]

factors, such as the magnitude of the price increase, the presence of central air conditioning form of direct load control of end-uses such as central air conditioning or electric water heating

375

adopt our eco-driving top tips to reduce fuel costs  

E-Print Network [OSTI]

air conditioning sparingly · All ancillary loads, particularly air conditioning, add to fuel air resistance and fuel consumption at higher speeds. · Keep windows shut at high speed. Lose weight

Harman, Neal.A.

376

One of the trends the Council's Sixth Power Plan identified was the growing demand for  

E-Print Network [OSTI]

for this are a combination of irrigation load and air conditioning load for residential and commercial customers. "Thirty years ago, most homes in our service area didn't have air conditioning; today, it's much more common

377

Facility Operations | Department of Energy  

Office of Environmental Management (EM)

e-mail GTNFacOpsHelpdesk@hq.doe.gov Grounds and Elevator Maintenance Heating and Air Conditioning Inquiries regarding heating and air conditioning should be made to the...

378

STATE OF CALIFORNIA --NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION  

E-Print Network [OSTI]

HOLES FOR VERIFYING REFRIGERANT CHARGE IN RESIDENTIAL AIR CONDITIONING SYSTEMS The California Energy charged with refrigerant. Proper refrigerant charge is necessary for compressor air conditioning systems problems. To reduce air conditioner energy consumption and peak demand, the Building Energy Efficiency

379

Building Energy Software Tools Directory: Energy Usage Forecasts  

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

Energy Usage Forecasts Energy Usage Forecasts Energy Usage Forecasts Quick and easy web-based tool that provides free 14-day ahead energy usage forecasts based on the degree day forecasts for 1,200 stations in the U.S. and Canada. The user enters the daily non-weather base load and the usage per degree day weather factor; the tool applies the degree day forecast and displays the total energy usage forecast. Helpful FAQs explain the process and describe various options for the calculation of the base load and weather factor. Historical degree day reports and 14-day ahead degree day forecasts are available from the same site. Keywords degree days, historical weather, mean daily temperature, load calculation, energy simulation Validation/Testing Degree day data provided by AccuWeather.com, updated daily at 0700.

380

Why E-government Usage Lags Behind: Explaining the Gap Between Potential and Actual Usage of Electronic Public Services in the Netherlands  

Science Journals Connector (OSTI)

Most of the EU-15 countries illustrate a gap between potential usage and actual usage of electronic public services. Using a model ... the case of current Dutch electronic governmental service usage. Motivational...

Alexander van Deursen; Jan van Dijk; Wolfgang Ebbers

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

Intranet usage, managerial satisfaction and performance impact: an empirical analysis  

Science Journals Connector (OSTI)

This article investigates the relationships between intranet usage, satisfaction as well as their impacts on performance from the managerial perspective which have received little research attention. Data was collected from 150 middle managers in the Malaysian port industry. The structural equation modelling results indicate that both usage and satisfaction significantly predict performance impact. Intranet usage significantly predicts managerial satisfaction and vice-versa; with intranet usage having more impact on satisfaction and that both are positively related. The results provide insights on how the Malaysian port industry and other organisations of a similar structure could improve their intranet adoption.

Mohd Daud Norzaidi; Siong Choy Chong; Mohamed Intan Salwani

2009-01-01T23:59:59.000Z

382

Optimization Online - On the implementation and usage of SDPT3 ...  

E-Print Network [OSTI]

Jun 16, 2010 ... On the implementation and usage of SDPT3 -- a Matlab software package for semidefinite-quadratic-linear programming, version 4.0.

Kim-Chuan Toh

2010-06-16T23:59:59.000Z

383

Impact of asset usage preferences on parallel replacement decisions.  

E-Print Network [OSTI]

??Data from a state department of transportation fleet shows that the usage of a typical asset decreases as it ages. One possible explanation for decreasing (more)

Wagner, Tristan John

2010-01-01T23:59:59.000Z

384

Improved Prediction of Runway Usage for Noise Forecast :.  

E-Print Network [OSTI]

??The research deals with improved prediction of runway usage for noise forecast. Since the accuracy of the noise forecast depends on the robustness of runway (more)

Dhanasekaran, D.

2014-01-01T23:59:59.000Z

385

Improved Usage Model for Web Application Reliability Testing .  

E-Print Network [OSTI]

??Testing the reliability of an application usually requires a good usage model that accurately captures the likely sequences of inputs that the application will receive (more)

Wan, Bo

2012-01-01T23:59:59.000Z

386

An Investigation of ink usage in offset process printing.  

E-Print Network [OSTI]

??With the trend of sustainable printing in the print industry, reducing ink usage is considered a win-win solution for printers who are seeking sustainable printing (more)

Zhou, Jiayi

2012-01-01T23:59:59.000Z

387

Geothermal: Sponsored by OSTI -- Ways to Minimize Water Usage...  

Office of Scientific and Technical Information (OSTI)

Ways to Minimize Water Usage in Engineered Geothermal Systems Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On HomeBasic Search About...

388

CERTIFIED REALTY SPECIALIST | Department of Energy  

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

REALTY SPECIALIST More Documents & Publications Greenpower Trap Mufflerl System Heating Ventilation and Air Conditioning Efficiency DOE's Petition for Interlocutory Review...

389

Motion to Withdraw from Yucca Mountain application | Department...  

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

from Yucca Mountain application More Documents & Publications CERTIFIED REALTY SPECIALIST Greenpower Trap Mufflerl System Heating Ventilation and Air Conditioning Efficiency...

390

SITN Regional Outreach Map | Department of Energy  

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

resources. regionaltrainingmap.pdf More Documents & Publications CERTIFIED REALTY SPECIALIST Greenpower Trap Mufflerl System Heating Ventilation and Air Conditioning Efficiency...

391

Zero Zone Comment | Department of Energy  

Energy Savers [EERE]

Order 13563 certification, compliance and enforcement regulations for Commercial Refrigeration Equipment (CRE) Air Conditioning Heating and Refrigeration Institute Comment...

392

Better Buildings Neighborhood Program Business Models Guide: Contractor/Retailer Business Models  

Broader source: Energy.gov [DOE]

Business models information focused on remodelers, HVAC (heating, ventilation, and air conditioning) contractors, home performance contractors, or retailers.

393

US Department of Energys Regulatory Negotiations Convening...  

Energy Savers [EERE]

Regulatory Negotiations Convening on Commercial Certification for Heating, Ventilating, Air-Conditioning, and Refrigeration Equipment regnegonacconfidentiality.pdf More...

394

National Certification Standard | Department of Energy  

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

electricians; heating and air conditioning specialists; engineers and architects. gshpkellynationalcertificationstandard.pdf More Documents & Publications Measuring the Costs...

395

Impact of Non-Behavioral Fixed Effects on Water Use: Weather and Economic Construction Differences on Residential Water Use in Austin, Texas  

E-Print Network [OSTI]

air conditioning and swimming pools (Hanke & Mare, 1984).to house versus lot size. Swimming Pool Approximately 2% of

Tinker, Audrey; Bame, Sherry; Burt, Richard; Speed, Michael

2005-01-01T23:59:59.000Z

396

NREL Reduces Climate Control Loads in Electric Vehicles (Fact Sheet)  

SciTech Connect (OSTI)

NREL demonstrates that zonal climate control can reduce air conditioning power and improve range while maintaining driver thermal sensation.

Not Available

2014-08-01T23:59:59.000Z

397

E-Print Network 3.0 - air treatment system Sample Search Results  

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

Last Updated: 41702 Summary: , including refrigeration, air conditioning, heating systems, ventilating fans, roof ventilators, exhaust fans... , water treatment equipment,...

398

DOE Announces 2008 Federal Energy and Water Management Awards...  

Office of Environmental Management (EM)

improving operations and maintenance practices and upgrading building management and heating, ventilating, and air conditioning equipment, including recommissioning energy...

399

E-Print Network 3.0 - air handling systems Sample Search Results  

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

Last Updated: 41702 Summary: , including refrigeration, air conditioning, heating systems, ventilating fans, roof ventilators, exhaust fans... , water treatment equipment,...

400

An Exploration of Innovation and Energy Efficiency in an Appliance Industry  

E-Print Network [OSTI]

clothes washers; refrigerators and freezers; dishwashers;and tubes, household refrigerators and freezers, householdhousehold refrigerators and freezers, air conditioning (room

Taylor, Margaret

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

Efficient solar cooling: first ever non-tracking solar collectors powering a double effect absorption chiller  

E-Print Network [OSTI]

2008) Optimization of a solar-assisted drying system forfuel efficiency, such as the solar assisted air conditioning

Poiry, Heather Marie

2011-01-01T23:59:59.000Z

402

Microsoft PowerPoint - Public Workshop - FY12 Budget Briefing...  

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

ready * Vital safety systems removed- heating, ventilation, and air conditioning (HVAC), fire protection, criticality * Contaminated ducts and filter boxes removed *...

403

Ultra-Efficient and Power-Dense Electric Motors  

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

food, aggregates, mining, material handling, heating, ventilating, air conditioning, wastewater, air handling, and beverage industries. Project Partners Baldor Electric Company...

404

Microsoft Word - BMPPlan Botts  

National Nuclear Security Administration (NNSA)

-- gallon per minute GSA -- General Services Administration HVAC -- Heating Ventilation Air Conditioning ISO -- International Standards Organization IWPF -- Industrial Wastewater...

405

CX-006996: Categorical Exclusion Determination | Department of...  

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

, ventilation and air conditioning (HVAC) equipment replacement, weatherization, glass and door replacement, interior and exterior lighting upgrades; 2) street lighting,...

406

CX-011607: Categorical Exclusion Determination | Department of...  

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

Determination CX-011607: Categorical Exclusion Determination Mission Support Alliance Annual Categorical Exclusion for Air Conditioning Systems for Existing Equipment...

407

Determining Dictionary and Usage Guide Agreement with Real-World Usage: A Diachronic Corpus Study of American English.  

E-Print Network [OSTI]

??Dictionaries and, to a lesser extent, usage guides provide writers, editors, and users of American English information on how to use the language appropriately. Dictionaries, (more)

Fronk, Amanda Kae

2014-01-01T23:59:59.000Z

408

Office of Facilities Management Macquarie University  

E-Print Network [OSTI]

Office of Facilities Management ­ Macquarie University: Air Conditioning General Policy No Division, Department, Office or other occupant of University facilities will act in respect of air-conditioning systems of units by or through external sources. Air-conditioning requirements for all capital works projects

Wang, Yan

409

Construction For more information: www.facilities.colostate.edu  

E-Print Network [OSTI]

Completion: January 2014 Improved mechanical systems; building air conditioning; upgraded laboratories single and double rooms; lofted ceilings; air conditioning; new study rooms and community lounges on each Completed: August 2012 New single and double rooms; lofted ceilings and air conditioning; new study rooms

410

EXHIBITION & SPONSORSHIP Sponsorship and Advertisement opportunities exist.  

E-Print Network [OSTI]

website www.ishrae.in). American Society of Heating, Refrigerating and Air- Conditioning Engineers (ASHRAE in the areas of heating, ventilation, air conditioning and refrigeration (visit website www.ashrae.org). ASHRAE Conference on Air Conditioning CALL FOR PAPERS 12-14 December 2013 Organized by Indian Institute

Mittal, Anurag

411

TO: Deans, Directors and Building Coordinators FROM: Dennis Kamite  

E-Print Network [OSTI]

air conditioning systems will be shut down as follows: No central air conditioning from 6:00 a.m. to 2 Bachman Hall Multi-Purpose Building Sinclair Library Wist Addition (Everly Hall) Wist Hall No central air conditioning from 7:30 a.m. to 4:00 p.m. for the following buildings: HPER Complex Law Library Law School

412

Are You Planning to Bring an Air Conditioner? Welcome to Truman State University and the services available through the Disability Services Office. Part of  

E-Print Network [OSTI]

conditioner requests. If you need air conditioning and are assigned to Centennial, Grim, or Fair Apartments, Missouri Hall, Ryle Hall, and West Campus Suites have air conditioning included). The documentation must that requires the need for air conditioning. Please fill out the form on the reverse side of this sheet, attach

Gering, Jon C.

413

University of Hawai`i Watt Watcher: Energy Consumption Data Analysis  

E-Print Network [OSTI]

, Medium and High use 6 Air Conditioning Observations 7 Relationship between Temperature and Air Conditioning 8 Relationships between Temperature, Humidity, Comfort, and Energy Consumption for Air from this data is the dominance of the air conditioning load in the overall energy consumption

414

A Science Service FeatureI Released upon receipt  

E-Print Network [OSTI]

operations. later they began providing comfortable indoor atmospheres for humanity. A good deal Air-conditioning a whole building for comfort, o r even a whole room, is expensive. But the air-conditioned bed, which yourself up for the night. A small, noise- less air-conditioning unit under the bed provides you

415

ED n 432 : Sciences des Mtiers de l'Ingnieur N attribu par la bibliothque  

E-Print Network [OSTI]

AND SIMULATION OF DEFECTS OF OPERATION FOR AIR CONDITIONING AUDIT (ANALYSE ET SIMULATION DE DEFAUTS DES and to contribute with them to the air conditioning efficiency. Special thanks to Bruno and Maxime for their help..................................................................................................... XI 1 REASONS AND METHODS FOR AUDITING THE AIR CONDITIONING SYSTEMS

Paris-Sud XI, Université de

416

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

E-Print Network [OSTI]

-1209(h) Office Hours: M-F 1-2p.m. Text: Heating, Ventilating, and Air Conditioning - Analysis and Design. -- Refrigeration and heating, ventilating and air-conditioning (HVAC) for comfort and industrial applications of the fundamentals of Heating, Ventilating, Air Conditioning, and Refrigeration as they relate to human comfort

Dyer, Bill

417

Aire Rite Finds Center for Family Business Just Right Huntington Beach Company Founded in 1972 Joins CSUF Center for Family Business  

E-Print Network [OSTI]

Beach-based Aire Rite Air Conditioning and Refrigeration to its Center membership. The premier network of multi-generational family business leaders. Aire Rite Air Conditioning and Refrigeration, Inc and optimization programs for air conditioning, building automation, food machinery, and refrigeration equipment

de Lijser, Peter

418

North American Technician Excellence Wayne Reedy  

E-Print Network [OSTI]

's largest non-profit certification organization for heating, ventilation, air conditioning and refrigeration/or Service certification in one or more SPECIALTY areas, including: Air Conditioning Air Distribution Heat and light HVACR commercial technicians in air conditioning, air distribution, heat pump, gas heating and oil

Oak Ridge National Laboratory

419

2oloased on Pocaipt but intended for use  

E-Print Network [OSTI]

, 1929. By Charles Fitzhugh Talman, Authority on Meteorology pa, art of air-conditioning, though still industries, air-conditioning is now regarded 5s essential o r highly desirable i n connection is making a special iidrivelt t o introduce air-conditioning o~,uipmoiitea.- 'pecially dasig:iod for privato

420

STATE OF CALIFORNIA NATURAL RESOURCES AGENCY ARNOLD SCHWARZENEGGER, Governor July 6, 2010  

E-Print Network [OSTI]

is the central air conditioning and heating system. If this system is not installed properly, it not only wastes central air conditioning or heating system. SEAL YOUR SYSTEM DUCTING Most homes have a duct system that delivers cooled or heated air from the air conditioning or heating unit to the home's living spaces

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

Truman STaTe univerSiTyWELCOME HOME! Air Conditioner  

E-Print Network [OSTI]

air conditioner requests.If you need air conditioning and are assigned to Centennial,Grim,or Fair,Missouri Hall,Ryle Hall and West Campus Suites have air conditioning included).The documentation must that requires the need for air conditioning. Please fill out the form on the reverse side of this sheet, attach

Gering, Jon C.

422

RESEARCH BRIEF wcec.ucdavis.edu  

E-Print Network [OSTI]

Conditioners (1 of 2) Key Benefits of Technology · Compared to standard residential air-conditioning, using, the efficiency of vapor compression air conditioning can be improved significantly by rejecting condenser heat reduce air conditioning energy use by 30% and peak demand by 25%. WCEC is currently developing a tool

California at Davis, University of

423

UNITED STATES PATENT AND TRADEMARK OFFICE PATENT-PENDING INVENTION, APPLICATION NO. 61/297,958 OF 25 JAN 2010  

E-Print Network [OSTI]

for Efficient Heating, Cooling, Refrigeration, and Air Conditioning BY MILIVOJE M. KOSTIC, SYCAMORE, IL, Refrigeration, and Air Conditioning, and set up a new paradigm in the industry. The method is suitable for Efficient Heating, Cooling, Refrigeration, and Air Conditioning BY MILIVOJE M. KOSTIC, SYCAMORE, IL

Kostic, Milivoje M.

424

Water-use efficiency for alternative cooling technologies in arid climates Energy and Buildings, Volume 43, Issues 23, FebruaryMarch 2011, Pages 631-638  

E-Print Network [OSTI]

valued for their reduced energy consumption in comparison to compressor-based air conditioning systems of 2004 found that 94% of homes with air conditioning had compressor-based systems [2]. Only 6% of homes-based air conditioning that utilizes the

California at Davis, University of

425

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

E-Print Network [OSTI]

­ the majority being highly mobile ­ sell and service heating and air conditioning systems for the company customer service Industry Focus Heating and air conditioning services Size 52 employees Case Study Nuccio Fixing Problems Fast In Florida's competitive air conditioning industry, the differentiator is "speed

Fisher, Kathleen

426

REFERENCE APPENDICES For the 2013 Building Energy Efficiency Standards  

E-Print Network [OSTI]

Appendix JA1 ­ Glossary Term Definition ACCA is the Air Conditioning Contractors of America ACCA MANUAL J is the Air Conditioning Contractors of America document titled "Manual J - Residential Load Calculation" (ANSI/ACCA 2 Manual J ­ 2006)is the Air Conditioning Contractors of America document titled "Manual J

427

1. -HOUSING AND ENVIRONMENT Colostrum consumption, thermoregulation and heat production  

E-Print Network [OSTI]

. Comparison of four air conditioning systems in fattening pig-houses C. TEXIER, R. GRANIER B. DE LA FARGE tested with each air conditioning system. The animals were housed by groups of ten on a surface of 0.8 M2) the statical system seems to be better, while air conditioning by overpressure is not recommended in winter

Paris-Sud XI, Université de

428

Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830  

E-Print Network [OSTI]

Savings and Economics of Advanced Control Strategies for Packaged Air-Conditioning Units with Gas Heat W of Advanced Control Strategies for Packaged Air-Conditioning Units with Gas Heat W Wang Y Huang S Katipamula into an existing unit, to improve the operational efficiency of packaged heating, ventilation and air-conditioning

429

CONSTRUCTION NOTICE SUPPLEMENT For On-going Construction Project  

E-Print Network [OSTI]

, UHM 08-541-201 CONTRACTOR: Diversified Plumbing and Air Conditioning SCOPE OF WORK: WEEKEND WORK is authorized to work 24/7 during this period. The water and air conditioning outage is scheduled at Kuykendall) The water and air conditioning outage at Art Building will be from Saturday, May 28, 7 a.m. until 5:00 p

430

The extreme daily temperatures observed between the treatments were not different (between 17" and 28" in summer and between 12" and 19" in winter), neither the growth  

E-Print Network [OSTI]

system seems to be better, while air conditioning by overpressure is not recommended in winter without especially in warm periods. Because of the flow rates of the fans used in dynamic air conditioning when the building is not heated. Air conditioning in fattening pig houses : effects of air flow and air

Boyer, Edmond

431

PLEASE SCROLL DOWN FOR ARTICLE This article was downloaded by: [Rochester Institute of Technology  

E-Print Network [OSTI]

://www.informaworld.com/smpp/title~content=t713723051 A Roadmap for Implementing Minichannels in Refrigeration and Air- Conditioning Systems for Implementing Minichannels in Refrigeration and Air- Conditioning Systems--Current Status and Future Directions in Refrigeration and Air-Conditioning Systems -- Current Status and Future Directions SATISH G. KANDLIKAR

Kandlikar, Satish

432

Simulation of Control Options for HVAC Management of a Typical Office Julien CAILLET julien.caillet@mines-paristech.fr  

E-Print Network [OSTI]

thermal comfort. A proposal to model the reasoned use of air conditioning equipment are investigated, Member States shall lay down the necessary measures to establish a regular inspection of air conditioning of the air- conditioning efficiency and the sizing compared to the cooling requirements of the building

Boyer, Edmond

433

This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research  

E-Print Network [OSTI]

Keywords: Sensor modeling Heating Ventilation Air conditioning systems Sensor monitoring Data mining Neural indoor-air-quality (IAQ) sensors used in heating, ventilation, and air conditioning (HVAC) systems, and air conditioning (HVAC) systems en- sure good quality air inside buildings. Statistics show that main

Kusiak, Andrew

434

Moving Advanced Desiccant Materials into Mainstream Non-CFC Cooling Products  

SciTech Connect (OSTI)

Desiccant air-conditioning systems can be used as alternatives for conventional air-conditioning equipment in any commercial or residential building. Recent breakthroughs in desiccant materials technology and the creation of new markets by Indoor Air Quality issues make desiccant-based air-conditioning equipment practical for many space-conditioning applications.

Sand, J R [ORNL; Grossman, G [ORNL; Rice, C K [ORNL; Fairchild, P D [ORNL; Gross, I L [Engelhard/ICC

1994-01-01T23:59:59.000Z

435

Furman University Justification of Business Usage of Cell Phone  

E-Print Network [OSTI]

Furman University Justification of Business Usage of Cell Phone 1 Name Justification of Business Usage of Cell Phone 2 The type of cell phone coverage must be reasonably workday? Yes_____ No_____ Other business reason that may necessitate use of cell phone, describe

436

Cognitive UWB-OFDM: Combining Ultrawideband with Opportunistic Spectrum Usage  

E-Print Network [OSTI]

wireless world, the number of radio systems increases every day, and efficient spectrum usage becomes problem, cognitive radio proposes an opportunistic spectrum usage approach [3], in which frequency bands that are not being used by their primary (licensed) users are utilized by cognitive radios. Both UWB and cognitive

Arslan, Hüseyin

437

A Genetic Algorithm Approach to Focused Software Usage Testing  

E-Print Network [OSTI]

A Genetic Algorithm Approach to Focused Software Usage Testing Robert M. Patton, Annie S. Wu Orlando, FL, U.S.A. ABSTRACT Because software system testing typically consists of only a very small the test results from a limited amount of testing based on high-level usage models. It can also be very

Wu, Annie S.

438

Improving API Usage through Automatic Detection of Redundant Code  

E-Print Network [OSTI]

Improving API Usage through Automatic Detection of Redundant Code David Kawrykow and Martin P Programming Interfaces (APIs). We have observed many cases where APIs are used in ways that are not the most effective. We developed a technique and tool support to automatically detect such patterns of API usage

Robillard, Martin

439

Detecting Inefficient API Usage David Kawrykow and Martin P. Robillard  

E-Print Network [OSTI]

Detecting Inefficient API Usage David Kawrykow and Martin P. Robillard School of Computer Science (APIs). We have observed many cases where APIs are used in ways that are not efficient. We developed a technique to automatically detect inefficient API usage in software projects. The main hypothesis underlying

Robillard, Martin

440

Electrical energy monitoring in an industrial plant  

E-Print Network [OSTI]

INTRODUCTION PURPOSE Energy use in commercial buildings has been widely examined in the past [Claridge et al. 1992]. The energy use in commercial buildings can be classified into four categories: 1). Heating, ventilating, and air-conditioning (HVAC), 2... energy usage will be if accurate data for weather and occupancy are used. The estimation of energy use in an industrial setting does not lend itself to this type of simulation. Unlike commercial buildings, which are heavily weather dependent...

Dorhofer, Frank Joseph

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

USAGE: a web-based approach towards the analysis of SAGE data  

Science Journals Connector (OSTI)

... Oxford University Press 2000 Original Paper USAGE: a web-based approach towards the analysis of...an application was not available we developed the USAGE package. Results: USAGE is a web-based application that comprises an integrated......

A. H. C. van Kampen; B. D. C. van Schaik; E. Pauws; E. M. C. Michiels; J. M. Ruijter; H. N. Caron; R. Versteeg; S. H. Heisterkamp; J. A. M. Leunissen; F. Baas; M. van der Mee

2000-10-01T23:59:59.000Z

442

Data and analysis on energy usage included: Taking readings on energy each minute  

E-Print Network [OSTI]

Appendix B Data and analysis on energy usage included: § Taking readings on energy each minute § 14 usage at the schools we monitored. The usage is compared to the PIER target, Title 24, and Ashrae 90

443

The long tail: a usage analysis of pre-1993 print biomedical journal literature  

E-Print Network [OSTI]

volumes, will likely require usage studies and the knowledgeThe long tail: a usage analysis of pre-1993 print biomedicalThe research analyzes usage of a major biomedical librarys

Starr, Susan S.; Williams, Jeff

2008-01-01T23:59:59.000Z

444

Rituals of Jouissance in Annie Ernauxs LUsage de la Photo  

E-Print Network [OSTI]

Art Moyen: Essai sur les usages sociaux de la photographie.Jouissance in Annie Ernaux's LUsage de la photo Desire is aof her most recent book, LUsage de la photo, [Slide 1

Van Arsdall, Lauren

2014-01-01T23:59:59.000Z

445

Video game console usage and national energy consumption: Results from a field-metering study  

E-Print Network [OSTI]

Video game console usage and national energy consumption:data, consoles with non-zero usage are actively used (forthat this estimate of active usage is far lower than our

Desroches, Louis-Benoit

2013-01-01T23:59:59.000Z

446

The role of input revisited: Nativist versus usage-based models  

E-Print Network [OSTI]

215-221. Bybee, J. (2008). Usage-based grammar and secondchildren not understand? A usage-based account of multiwordlanguage acquisition from a usage-based perspective. In P.

Zyzik, Eve

2009-01-01T23:59:59.000Z

447

The Impact of Residential Density on Vehicle Usage and Energy Consumption  

E-Print Network [OSTI]

on Vehicle Usage and Energy Consumption References Bento,Vehicle Usage and Energy Consumption UCI-ITS-WP-05-1 Thomason Vehicle Usage and Energy Consumption Thomas F. Golob

Golob, Thomas F; Brownstone, David

2005-01-01T23:59:59.000Z

448

Rituals of Jouissance in Annie Ernauxs LUsage de la Photo  

E-Print Network [OSTI]

Ernaux's LUsage de la photo Desire is a central concern inrecent book, LUsage de la photo, [Slide 1] suggests much ofmade love. But LUsage de la photo is not exclusively about

Van Arsdall, Lauren

2014-01-01T23:59:59.000Z

449

POWER PLANT WATER USAGE AND LOSS STUDY - Final  

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

POWER PLANT WATER USAGE AND LOSS STUDY POWER PLANT WATER USAGE AND LOSS STUDY August 2005 Revised May 2007 Prepared for: The United States Department of Energy National Energy Technology Laboratory DOE Gasification Technology Manager: Gary J. Stiegel DOE Project Manager: James R. Longanbach Project Manager: Michael D. Rutkowski Principal Investigators: Michael G. Klett Norma J. Kuehn Ronald L. Schoff Vladimir Vaysman Jay S. White Power Plant Water Usage and Loss Study i August 2005 TABLE OF CONTENTS TABLE OF CONTENTS ...................................................................................................................... I LIST OF TABLES.............................................................................................................................III

450

" Million U.S. Housing Units"  

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

7 Air-Conditioning Usage Indicators by Climate Zone, 2005" 7 Air-Conditioning Usage Indicators by Climate Zone, 2005" " Million U.S. Housing Units" ,,"Climate Zone1" ,,"Less than 2,000 CDD and --",,,,"2,000 CDD or More and Less than 4,000 HDD" ,"Housing Units (millions)" ,,"Greater than 7,000 HDD","5,500 to 7,000 HDD","4,000 to 5,499 HDD","Less than 4,000 HDD" "Air-Conditioning Usage Indicators" "Total",111.1,10.9,26.1,27.3,24,22.8 "Do Not Have Cooling Equipment",17.8,3.2,4.7,3.6,5.5,0.9 "Have Cooling Equipment",93.3,7.7,21.4,23.7,18.5,21.9 "Use Cooling Equipment",91.4,7.6,21,23.4,17.9,21.7 "Have Equipment But Do Not Use it",1.9,"Q",0.4,0.4,0.6,0.3

451

E-Print Network 3.0 - adjunctive antimetabolite usage Sample...  

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

adjunctive antimetabolite usage Search Powered by Explorit Topic List Advanced Search Sample search results for: adjunctive antimetabolite usage Page: << < 1 2 3 4 5 > >> 1...

452

E-Print Network 3.0 - antimicrobial-usage statistics based Sample...  

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

usage statistics based Search Powered by Explorit Topic List Advanced Search Sample search results for: antimicrobial-usage statistics based Page: << < 1 2 3 4 5 > >> 1 Stakeholder...

453

E-Print Network 3.0 - animal antimicrobial usage Sample Search...  

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

antimicrobial usage Search Powered by Explorit Topic List Advanced Search Sample search results for: animal antimicrobial usage Page: << < 1 2 3 4 5 > >> 1 Stakeholder position...

454

Examining usage and parental regulation of mobile phones and their perceived impact on interpersonal family communication.  

E-Print Network [OSTI]

?? This research investigated perceptions of mobile phone usage with regard to interpersonal communication between family members, perceptions of mobile phone usage between family members (more)

Peetz-Ballweg, Tricia

2011-01-01T23:59:59.000Z

455

The Impact of Residential Density on Vehicle Usage and Energy Consumption  

E-Print Network [OSTI]

Vehicle Usage and Energy Consumption Table 2 Housing Unitsresidential vehicular energy consumption is graphed as aon Vehicle Usage and Energy Consumption with vehicles, but

Golob, Thomas F.; Brownstone, David

2005-01-01T23:59:59.000Z

456

Energy Usage Information: Lessons from the Credit Reporting Industry.  

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

Energy Usage Information: Lessons from the Credit Reporting Industry. Energy Usage Information: Lessons from the Credit Reporting Industry. Speaker(s): Philip Henderson Date: October 4, 2012 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Janie Page There has been much discussion about the use of customer energy usage information to deliver value, such as with benchmarking tools that compare energy use in a building to a peer set, continuous commissioning services that diagnose faults in building systems, and tools that estimate expected savings from upgrades. A utility can use customer information to deliver these kinds of services to its customers directly, but most utilities today do not enable companies to obtain a customer's energy usage information in a systematic, automated way to deliver services to the customer, even if

457

Identifying Consumer Groups with Satisfactory Characteristics for Electric Mobility Usage  

Science Journals Connector (OSTI)

Who will use an electric car? This question will be addressed by identifying ... that are compatible with a future usage of electric cars. To answer this question a survey in...

Dominik Santner; Dirk Fornahl

2014-01-01T23:59:59.000Z

458

An Assessment of the Adequacy of Sunscreen Usage  

Science Journals Connector (OSTI)

...Radiation Protection Dosimetry Article An Assessment of the Adequacy of Sunscreen Usage G.C. Hart A.L. Wright R.G. Cameron Sunscreens are in widespread use as a form of skin protection against solar ultraviolet......

G.C. Hart; A.L. Wright; R.G. Cameron

2000-09-01T23:59:59.000Z

459

Memory Usage Inference for Object-Oriented Programs  

E-Print Network [OSTI]

We present a type-based approach to statically derive symbolic closed-form formulae that characterize the bounds of heap memory usages of programs written in object-oriented languages. Given a program with size and alias ...

Nguyen, Huu Hai

460

Usages and Implied Terms in the United States  

E-Print Network [OSTI]

The Uniform Commercial Code (UCC or Code) incorporates commercial practices course of performance, course of dealing, and usage of trade into the parties agreement, with the aim of reduc[ing] the gap between law and practice and ... insur...

Drahozal, Christopher R.

2012-09-03T23:59:59.000Z

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

Energy Conservation Through Water Usage Reduction in the Semiconductor Industry  

E-Print Network [OSTI]

ENERGY CONSERVATION THROUGH WATER USAGE REDUCTION IN THE SEMICONDUCTOR INDUSTRY Laura Mendicino Kathy McCormack Sarah Gibson Bob Patton Dana Lyon Jeff Covington Engineer Engineer ESrn Manager Engineer Engineer Engineer Motorola Austin, TX...

Mendicino, L.; McCormack, K.; Gibson, S.; Patton, B.; Lyon, D.; Covington, J.

462

Technology readiness and usage: a global-identity perspective  

Science Journals Connector (OSTI)

Extant research also suggests that consumer values and traits affect technology usage through an interaction effect with perceived ease of use, perceived usefulness and enjoyment (Dabholkar and Bagozzi 2002; Srite

Stanford A. Westjohn; Mark J. Arnold

2009-09-01T23:59:59.000Z

463

RECS Propane Usage Form_v1 (Draft).xps  

Gasoline and Diesel Fuel Update (EIA)

propane usage for this housing unit between September 2008 and April 2010. Delivery Number Enter the Delivery Date for each delivery 1 2 3 4 5 6 7 8 9 10 Enter the Total Dollar...

464

RECS Electricity Usage Form_v2 (25418 - Activated, Traditional...  

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

electricity usage for this service address between September 2008 and April 2010. Billing Period Enter the End Date for each billing period MMDDYY Enter the Amount used in kWh...

465

Commercial Building HVAC Energy Usage in Semi-Tropical Climates  

E-Print Network [OSTI]

requirements for commercial buildings. It is then suggested that this computer program would be valuable in determining the changes one could expect in annual energy usage by varying certain building design parameters. Secondly, a small office building actually...

Worbs, H. E.

1987-01-01T23:59:59.000Z

466

Identify Vehicle Usage Mission Constraints for Reducing Greenhouse Gas  

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

Identify Vehicle Usage Mission Constraints for Reducing Greenhouse Identify Vehicle Usage Mission Constraints for Reducing Greenhouse Gas Emissions Identify Vehicle Usage Mission Constraints for Reducing Greenhouse Gas Emissions October 7, 2013 - 11:46am Addthis YOU ARE HERE: Step 2 As Federal agencies work to identify opportunities for right-sizing the fleet and replacing inefficient vehicles with new, efficient, and/or alternatively fueled models to reduce greenhouse gas (GHG) emissions, they should flag potential mission constraints associated with vehicle usage. This may involve further data collection to understand the mission considerations associated with individual vehicles. For instance, in Figure 1, Vehicle 004 appears to be underutilized, having both a low user-to-vehicle ratio and a relatively low time in use per day. However,

467

Reduction of Utility Usage in a Glyphosate Intermediate (GI) Unit  

E-Print Network [OSTI]

Reduction of Utility Usage in a Glyphosate Intermediate (GI) Unit Michael L. Sander Manufacturing Technologist Monsanto Company Luling, Louisiana Plant ABSTRACT The Monsanto Company Luling Plant produces glyphosate intermediate (GI... the Utilities area brainstormed ideas and then implemented them across the units. While all utilities were addressed, the groups primary focus areas were natural gas, nitrogen, and compressed air. Natural gas usage was reduced 28% by optimizing...

Sander, M. L.

2006-01-01T23:59:59.000Z

468

Measuring and prioritising value of mobile phone usage  

Science Journals Connector (OSTI)

The purpose of this research is to measure and prioritise the value of mobile phone usage using employees' perspectives. The Content analysis method and the Analytic Hierarchy Process (AHP) were adopted to collect and analyse data. According ... Keywords: AHP, analytical hierarchy process, cell phones, content analysis, convenience, customer value, m-commerce, mobile commerce, mobile communications, mobile phone usage, mobile phone users, mobile phones, mobile services

Chung-Chu Liu

2010-12-01T23:59:59.000Z

469

A Dynamic Energy Budget (DEB) model for the energy usage and reproduction of the Icelandic capelin (Mallotus villosus)  

E-Print Network [OSTI]

DEB) model for the energy usage and reproduction of theto capture the growth, energy usage, and roe production of

Einarsson, Baldvin; Birnir, Bjorn; Sigursson, Sven .

2010-01-01T23:59:59.000Z

470

Untitled  

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

Air-Conditioning: Air-conditioning is one of the five end-use categories in Air-Conditioning: Air-conditioning is one of the five end-use categories in this report. It is defined as cooling and dehumidification of the air in a building by a refrigeration unit driven by electricity or gas. This definition excludes fans, blowers, or evaporative cooling systems ("swamp coolers") that are not connected to a refrigeration unit. Air-conditioning units that are not currently in working condition or are not used are still included in the RECS if they are in place in the housing unit. If the household did not use its air-conditioning equipment during the summer of 1993, no consumption and expenditures are imputed for air-conditioning. Apartments: A housing unit in a building with multiple units--a structure that is divided into living quarters for more than one family or household

471

\\\\files.umn.edu\\DRS\\Shared\\Departmental Information\\Policies and Procedures Fitness Center Usage  

E-Print Network [OSTI]

Center Usage University Recreation and Wellness, and more specifically the Fitness program, has very

Amin, S. Massoud

472

2011 Radioactive Materials Usage Survey for Unmonitored Point Sources  

SciTech Connect (OSTI)

This report provides the results of the 2011 Radioactive Materials Usage Survey for Unmonitored Point Sources (RMUS), which was updated by the Environmental Protection (ENV) Division's Environmental Stewardship (ES) at Los Alamos National Laboratory (LANL). ES classifies LANL emission sources into one of four Tiers, based on the potential effective dose equivalent (PEDE) calculated for each point source. Detailed descriptions of these tiers are provided in Section 3. The usage survey is conducted annually; in odd-numbered years the survey addresses all monitored and unmonitored point sources and in even-numbered years it addresses all Tier III and various selected other sources. This graded approach was designed to ensure that the appropriate emphasis is placed on point sources that have higher potential emissions to the environment. For calendar year (CY) 2011, ES has divided the usage survey into two distinct reports, one covering the monitored point sources (to be completed later this year) and this report covering all unmonitored point sources. This usage survey includes the following release points: (1) all unmonitored sources identified in the 2010 usage survey, (2) any new release points identified through the new project review (NPR) process, and (3) other release points as designated by the Rad-NESHAP Team Leader. Data for all unmonitored point sources at LANL is stored in the survey files at ES. LANL uses this survey data to help demonstrate compliance with Clean Air Act radioactive air emissions regulations (40 CFR 61, Subpart H). The remainder of this introduction provides a brief description of the information contained in each section. Section 2 of this report describes the methods that were employed for gathering usage survey data and for calculating usage, emissions, and dose for these point sources. It also references the appropriate ES procedures for further information. Section 3 describes the RMUS and explains how the survey results are organized. The RMUS Interview Form with the attached RMUS Process Form(s) provides the radioactive materials survey data by technical area (TA) and building number. The survey data for each release point includes information such as: exhaust stack identification number, room number, radioactive material source type (i.e., potential source or future potential source of air emissions), radionuclide, usage (in curies) and usage basis, physical state (gas, liquid, particulate, solid, or custom), release fraction (from Appendix D to 40 CFR 61, Subpart H), and process descriptions. In addition, the interview form also calculates emissions (in curies), lists mrem/Ci factors, calculates PEDEs, and states the location of the critical receptor for that release point. [The critical receptor is the maximum exposed off-site member of the public, specific to each individual facility.] Each of these data fields is described in this section. The Tier classification of release points, which was first introduced with the 1999 usage survey, is also described in detail in this section. Section 4 includes a brief discussion of the dose estimate methodology, and includes a discussion of several release points of particular interest in the CY 2011 usage survey report. It also includes a table of the calculated PEDEs for each release point at its critical receptor. Section 5 describes ES's approach to Quality Assurance (QA) for the usage survey. Satisfactory completion of the survey requires that team members responsible for Rad-NESHAP (National Emissions Standard for Hazardous Air Pollutants) compliance accurately collect and process several types of information, including radioactive materials usage data, process information, and supporting information. They must also perform and document the QA reviews outlined in Section 5.2.6 (Process Verification and Peer Review) of ES-RN, 'Quality Assurance Project Plan for the Rad-NESHAP Compliance Project' to verify that all information is complete and correct.

Sturgeon, Richard W. [Los Alamos National Laboratory

2012-06-27T23:59:59.000Z

473

MESUR: USAGE-BASED METRICS OF SCHOLARLY IMPACT  

SciTech Connect (OSTI)

The evaluation of scholarly communication items is now largely a matter of expert opinion or metrics derived from citation data. Both approaches can fail to take into account the myriad of factors that shape scholarly impact. Usage data has emerged as a promising complement to existing methods o fassessment but the formal groundwork to reliably and validly apply usage-based metrics of schlolarly impact is lacking. The Andrew W. Mellon Foundation funded MESUR project constitutes a systematic effort to define, validate and cross-validate a range of usage-based metrics of schlolarly impact by creating a semantic model of the scholarly communication process. The constructed model will serve as the basis of a creating a large-scale semantic network that seamlessly relates citation, bibliographic and usage data from a variety of sources. A subsequent program that uses the established semantic network as a reference data set will determine the characteristics and semantics of a variety of usage-based metrics of schlolarly impact. This paper outlines the architecture and methodology adopted by the MESUR project and its future direction.

BOLLEN, JOHAN [Los Alamos National Laboratory; RODRIGUEZ, MARKO A. [Los Alamos National Laboratory; VAN DE SOMPEL, HERBERT [Los Alamos National Laboratory

2007-01-30T23:59:59.000Z

474

Factors affecting the usage of intranet: A confirmatory study  

Science Journals Connector (OSTI)

The extent of intranet implementation and use within individual organizations has significant implications for organizational performance. Previous studies on technology adoption in the workplace suggest that acceptance behavior is influenced by a variety of antecedent factors including individual differences, social influences, beliefs, attitudes, and situational influences. This study reports on an investigation of extended TAM (Technology Acceptance Model) using external factors and subjective norm influencing usage of intranet within organizations. The external factors affecting the perceived ease of use, perceived usefulness, and usage of intranet include technical support, Web experience, task equivocality, and task interdependence. The subjective norm is the mediating variable and external variables indirectly affect usage of intranet indirectly through their effects on subjective norm. Based on a survey of 333 intranet users from 10 major Korean companies, this study uses a structural equation model to test the research model. The results indicate that usage of intranet is influenced by technical support, Web experience, task equivocality, and perceived ease of use. Technical support and Web experience influences the perceived ease of use. Technical support, task equivocality, and task interdependence have positive effects on the subjective norm. Usage of intranet which is a dependent variable in this model, is influenced by technical support, Web experience task interdependence, and perceived ease of use.

Sangjae Lee; Byung Gon Kim

2009-01-01T23:59:59.000Z

475

1. Cooling water is one-third of US water usage Basic approach: (a) estimate power consumption, from which you estimate cooling water usage  

E-Print Network [OSTI]

1. Cooling water is one-third of US water usage Basic approach: (a) estimate power consumption) Water for power consumption I happen to know that total energy usage is roughly 10 kW per person energy usage by a lot. Now we assume that a power plant is 50% efficient. I assumed more than 20%, less

Nimmo, Francis

476

Definition: Reduced Oil Usage (Not Monetized) | Open Energy Information  

Open Energy Info (EERE)

Usage (Not Monetized) Usage (Not Monetized) Jump to: navigation, search Dictionary.png Reduced Oil Usage (Not Monetized) The functions that provide this benefit eliminate the need to send a line worker or crew to the switch or capacitor locations to operate them eliminate the need for truck rolls to perform diagnosis of equipment condition, and reduce truck rolls for meter reading and measurement purposes. This reduces the fuel consumed by a service vehicle or line truck. The use of plug-in electric vehicles can also lead to this benefit since the electrical energy used by plug-in electric vehicles displaces the equivalent amount of oil.[1] References ↑ SmartGrid.gov 'Description of Benefits' An LikeLike UnlikeLike You like this.Sign Up to see what your friends like. inline Glossary Definition

477

APS Guideline for Hand Tool and Portable Power Tool Usage  

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

Hand Tool and Portable Power Tool Usage Hand Tool and Portable Power Tool Usage Introduction CAT/XSD recognizes that the misuse and improper maintenance of hand tools and portable power tools cause a significant number of injuries to even "experienced" workers. Consequently, CAT/XSD has adopted the following policies and procedures to minimize the hazards associated with the use of such equipment at the APS. These guidelines apply to all use of hand tools and portable power tools by CAT/XSD personnel while performing maintenance or installation activities at the APS. Although CAT/XSD feels that most of the guidelines also apply to tool usage during experimental activities, CAT/XSD will not require that short-term users complete the training described below. Using Tools Safely If you have not had formal training in the use of common tools, either view

478

Ethanol Usage in Urban Public Transportation - Presentation of Results |  

Open Energy Info (EERE)

Ethanol Usage in Urban Public Transportation - Presentation of Results Ethanol Usage in Urban Public Transportation - Presentation of Results Jump to: navigation, search Tool Summary Name: Ethanol Usage in Urban Public Transportation - Presentation of Results Agency/Company /Organization: BioEthanol for Sustainable Transport Focus Area: Fuels & Efficiency Topics: Best Practices Website: cenbio.iee.usp.br/download/publicacoes/SAE_BEST_2010.pdf This paper presents the BioEthanol for Sustainable Transport (BEST) project in Brazil, its partners, and the results from the demonstration tests performed in field, as well as the proposals of public policies that were elaborated and are being implemented. The BEST project was implemented in Sao Paulo as well as eight other cities located in Europe and Asia. How to Use This Tool

479

Form EIA-457E (2001) -- Household Bottled Gas Usage  

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

F (2001) -- Household Natural Gas Usage Form F (2001) -- Household Natural Gas Usage Form OMB No. 1905-0092, Expiring February 29, 2004 2001 Residential Energy Consumption Survey Answers to Frequently Asked Questions About the Household Natural Gas Usage Form What is the purpose of the Residential Energy Consumption Survey? The Residential Energy Consumption Survey (RECS) collects data on energy consumption and expenditures in U.S. housing units. Over 5,000 statistically selected households across the U.S. have already provided information about their household, the physical characteristics of their housing unit, their energy-using equipment, and their energy suppliers. Now we are requesting the energy billing records for these households from each of their energy suppliers. After all this information has been collected, the information will be used to

480

Application of Electronic Serial Usage Statistics in a National Laboratory  

SciTech Connect (OSTI)

Traditional measures of library performance walk-in visitors, number of users attending presentations, classes, number of individual subscriptions processed, etc. do not reflect the increased activity and use of library products and services. The Hanford Technical Library is physically removed from the main campus of Pacific Northwest National Laboratory, and thus necessitates having a robust online presence in order to effectively reach and provide services to library users. Online usage statistics have become vital in convincing Laboratory management to invest funding the library at continuing or increasing levels of demand for library services. E-serial usage statistics in particular give the Hanford Technical Library a myriad of information on user behavior, research trends, collection development, and act as important analytical tools which support resource allocation analysis, reporting, and managerial decision-making. However, there are many problems with publisher and vendor supplied usage statistics and possible solutions are proposed.

Noonan, Christine F.; McBurney, Melissa K.

2007-08-27T23:59:59.000Z

Note: This page contains sample records for the topic "air-conditioning usage air-conditioned" 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

Mining Software Usage with the Automatic Library Tracking Database (ALTD)  

SciTech Connect (OSTI)

Tracking software usage is important for HPC centers, computer vendors, code developers and funding agencies to provide more efficient and targeted software support, and to forecast needs and guide HPC software effort towards the Exascale era. However, accurately tracking software usage on HPC systems has been a challenging task. In this paper, we present a tool called Automatic Library Tracking Database (ALTD) that has been developed and put in production on several Cray systems. The ALTD infrastructure prototype automatically and transparently stores information about libraries linked into an application at compilation time and also the executables launched in a batch job. We will illustrate the usage of libraries, compilers and third party software applications on a system managed by the National Institute for Computational Sciences.

Hadri, Bilel [ORNL; Fahey, Mark R [ORNL

2013-01-01T23:59:59.000Z

482

Commercial Building Tenant Energy Usage Aggregation and Privacy  

SciTech Connect (OSTI)

A growing number of building owners are benchmarking their building energy use. This requires the building owner to acquire monthly whole-building energy usage information, which can be challenging for buildings in which individual tenants have their own utility meters and accounts with the utility. Some utilities and utility regulators have turned to aggregation of customer energy use data (CEUD) as a way to give building owners whole-building energy usage data while protecting customer privacy. Meter profile aggregation adds a layer of protection that decreases the risk of revealing CEUD as the number of meters aggregated increases. The report statistically characterizes the similarity between individual energy usage patterns and whole-building totals at various levels of meter aggregation.

Livingston, Olga V.; Pulsipher, Trenton C.; Anderson, David M.; Wang, Na

2014-10-31T23:59:59.000Z

483

Form EIA-457E (2001) -- Household Bottled Gas Usage  

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

E (2001) - Household Electricity Usage Form E (2001) - Household Electricity Usage Form OMB No. 1905-0092, Expiring February 29, 2004 2001 Residential Energy Consumption Survey Answers to Frequently Asked Questions About the Household Electricity Usage Form What is the purpose of the Residential Energy Consumption Survey? The Residential Energy Consumption Survey (RECS) collects data on energy consumption and expenditures in U.S. housing units. Over 5,000 statistically selected households across the U.S. have already provided information about their household, the physical characteristics of their housing unit, their energy-using equipment, and their energy suppliers. Now we are requesting the energy billing records for these households from each of their energy suppliers. After all this information has been collected, the information will be used to

484

Water Usage Law, Major Water Users (Missouri) | Department of Energy  

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

Water Usage Law, Major Water Users (Missouri) Water Usage Law, Major Water Users (Missouri) Water Usage Law, Major Water Users (Missouri) < Back Eligibility Agricultural Commercial Construction Fed. Government Industrial Institutional Investor-Owned Utility Local Government Municipal/Public Utility Retail Supplier Rural Electric Cooperative Systems Integrator Tribal Government Utility Savings Category Water Buying & Making Electricity Program Info State Missouri Program Type Environmental Regulations Provider Missouri Department of Natural Resources Any water user with the capability to withdraw or divert 100,000 gallons or more per day from any stream, river, lake, well, spring or other water source must register and file for a permit for water withdrawal and diversion from the Department of Natural Resources. Additionally, no major

485

Electronic government return assessment by measuring information system usage  

Science Journals Connector (OSTI)

This study attempted to assess the impact of electronic government on back office functions. Information system usage and a multi-level framework are proposed as a measure for back office functions. The study is applied to the Kuwaiti e-government project. The study's findings indicate no significant impact on the back office. However, using the framework and information system usage measure has provided a multi-dimensional picture of the status of the e-government project. Management and research implications of the study's findings are presented.

Helaiel Almutairi

2010-01-01T23:59:59.000Z

486

 

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

B1.4 Installation/modification of air conditioning systems for existing equipment B1.4 Installation/modification of air conditioning systems for existing equipment The scope of energy reduction renovations will involve the insulation of the building envelope, the installation of high efficiency environmental conditioning for the two most utilized gathering spaces within the Millsop Community Center, and the introduction of lighting controls for new low energy consumption light fixtures. The Upper Ohio Valley relies on coal for electrical generation. By reducing the overall energy usage, the proposed work will contribute to the overall reduction in fossil fuel emissions. The targeted areas for renovations and implementation of energy reduction and sustainability are the conference center and the Rose Room. Goals include the reduction of heat loss and heat gain by optimizing

487

CX-004645: Categorical Exclusion Determination | Department of Energy  

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

645: Categorical Exclusion Determination 645: Categorical Exclusion Determination CX-004645: Categorical Exclusion Determination CPP-663 Heating, Ventilation and Air Conditioning Systems Upgrade CX(s) Applied: B2.1 Date: 12/10/2010 Location(s): Idaho Office(s): Idaho Operations Office The scope of work will be to repair and/or replace the existing heating, ventilation, and air conditioning system located in building CPP-663 at the Idaho National Engineering Laboratory. The scope will be to repair the existing system or identify an energy efficient replacement to the existing system and place a National Fire Protection Association (NFPA) 70E code compliant electrical metering system that will monitor building electrical usage. CPP-663 is a two story maintenance/craft warehouse building. The building houses offices, maintenance shops, storage rooms, and other

488

Residential Energy Consumption Survey (RECS) - Data - U.S. Energy  

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

3 RECS Survey Data 2009 | 2005 | 2001 | 1997 | 1993 | Previous 3 RECS Survey Data 2009 | 2005 | 2001 | 1997 | 1993 | Previous Housing Characteristics Consumption & Expenditures Microdata Methodology Housing Characteristics Tables Topical Sections Entire Section All Detailed Tables PDF Tables: HC1 Household Characteristics, Million U.S. Households Presents data relating to location, type, ownership, age, size, construction, and householder demographic and income characteristics. PDF Tables: HC2 Space Heating, Million U.S. Households Presents data describing the types of heating fuel and equipment used for main and secondary heating purposes. PDF Tables: HC3 Air-Conditioning, Million U.S. Households Presents data describing selected household characteristics including location, number of rooms and area cooled and air-conditioning usage. PDF

489

Intereffects in supermarkets  

SciTech Connect (OSTI)

Supermarkets have air-conditioning requirements not experienced in any other commercial building. The supermarket is a wideopen structure with concentrated negative loads located variously throughout the building. This article describes the design criteria for HVAC equipment, air distribution, and controls that optimize supermarket energy usage. The psychometrics of supermarket air conditioning are more complex than for conventional buildings. Application requires specialized knowledge, which from observation of the real work resides by default with the HVAC salesman and the supplier. There are areas that could be improved in supermarket energy use involving display refrigeration and HVAC. To achieve these benefits, ASHRAE, the Commercial Refrigeration Manufacturers Association, and the supermarket industry must cooperatively establish a plan to direct the research.

Adams, P.

1985-10-01T23:59:59.000Z

490

 

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

The applicant will notify DOE of any retrofit projects, not identified in the Strategy and Activity Worksheet, to ensure that the existing NEPA determination remains applicable. X - B1.4 Installation/modification of air conditioning systems for existing equipment As a result of receiving NJ State Sustainable Jersey funding for an energy audit, the Township of South Brunswick is requesting to spend the funding granted to retrofit our existing Municipal Center. The current energy usage is negatively impacted by the age of the structure in particular our heating/air conditioning systems. Funding will also address the replacement of several heat exchangers as well as a lighting upgrade. Retrofits will include: -High-Efficiency Split System Heat Pump Air Handling Units

491

Some Basic WebAssign Usage for Students  

E-Print Network [OSTI]

Some Basic WebAssign Usage for Students Department of Mathematics Purdue University Fall 2012 #12;Useful Web-Sites For student login: http://www.webassign.net/purdue/login.html use your Purdue Career Account information. (The web-site: http://www.webassign.net/ is for instructors' use, not for students

Brown, Johnny E.

492

Some Basic WebAssign Usage for Students  

E-Print Network [OSTI]

Some Basic WebAssign Usage for Students Department of Mathematics Purdue University Fall 2011 #12;Useful Web-Sites For student login: http://www.webassign.net/purdue/login.html use your Purdue Career Account information. (The web-site: http://www.webassign.net/ is for instructors' use, not for students

Cai, Zhiqiang

493

Cryptographic Link Signatures for Spectrum Usage Authentication in Cognitive Radio  

E-Print Network [OSTI]

Cryptographic Link Signatures for Spectrum Usage Authentication in Cognitive Radio Xi Tan, Kapil frequency spectrum was inefficiently utilized. To fully use these spectrums, cognitive radio networks have of cognitive radio is to enable the current fixed spectrum channels assigned by Federal Communica- tions

Du, Wenliang "Kevin"

494

Fuel bundle design for enhanced usage of plutonium fuel  

DOE Patents [OSTI]

A nuclear fuel bundle includes a square array of fuel rods each having a concentration of enriched uranium and plutonium. Each rod of an interior array of the rods also has a concentration of gadolinium. The interior array of rods is surrounded by an exterior array of rods void of gadolinium. By this design, usage of plutonium in the nuclear reactor is enhanced.

Reese, Anthony P. (San Jose, CA); Stachowski, Russell E. (Fremont, CA)

1995-01-01T23:59:59.000Z

495

Learning Policies For Battery Usage Optimization in Electric Vehicles  

E-Print Network [OSTI]

algorithmic chal- lenge. 1 Introduction Electric vehicles, partially or fully powered by batteries, are oneLearning Policies For Battery Usage Optimization in Electric Vehicles Stefano Ermon, Yexiang Xue for the widespread adoption of electric vehicles. Multi-battery systems that combine a standard battery

Bejerano, Gill

496

Usage Control in Service-Oriented Architectures Alexander Pretschner1  

E-Print Network [OSTI]

to the present and the past. More recent work has extended the concept to usage control (UC for short; [4 appropriate than enforcement by direct control over the service provider's actions, and present a logical architectures. 1 Introduction The past few years have seen major technological and business trends

Massacci, Fabio

497

Access to and Usage of Offshore Liberty Ship  

E-Print Network [OSTI]

Access to and Usage of Offshore Liberty Ship Reefs in Texas ROBERT B. DITTON, ALAN R. GRAEFE to establish cover and habitat for fisheries. Offshore artificial reef con- struction began in 1935 led many other states to become interested in deploying offshore artificial reefs. The first reef

498

Security Implications of Typical Grid Computing Usage Scenarios Marty Humphrey  

E-Print Network [OSTI]

Security Implications of Typical Grid Computing Usage Scenarios Marty Humphrey Computer Science. A broader goal of these scenarios are to increase the awareness of security issues in Grid Computing. 1 easy and secure ac- cess to the Grid's diverse resources. Infrastructure software such as Legion [6

Thompson, Mary R.

499

Improving Home Automation by Discovering Regularly Occurring Device Usage Patterns  

E-Print Network [OSTI]

Improving Home Automation by Discovering Regularly Occurring Device Usage Patterns Edwin O of two prediction algorithms, thus demonstrating multiple uses for a home automation system. Finally, we Several research efforts are focused on home automation. The Intelligent Room [2] uses an array of sensors

Cook, Diane J.

500

Energy Usage Attitudes of Urban India IBM Research India  

E-Print Network [OSTI]

Energy Usage Attitudes of Urban India Mohit Jain IBM Research India mohitjain@in.ibm.com Deepika@cs.cmu.edu Amarjeet Singh IIIT Delhi, India amarjeet@iiitd.ac.in Abstract-- Though rapid increase in energy factors affecting energy consumption in urban India. However, the small numbers of participants in those

Toronto, University of