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


1

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

E-Print Network [OSTI]

Efficiency of Unitary Air Conditioners and Heat Pumps,and Validation of Unitary Air Conditioner and Heat PumpC.W. (1994). Room Air Conditioner System Modeling, Air

Yu, Bingyi

2013-01-01T23:59:59.000Z

2

STATE OF CALIFORNIA CONSTANT VOLUME SINGLE ZONE UNITARY AIR CONDITIONER AND HEAT PUMP SYSTEMS  

E-Print Network [OSTI]

STATE OF CALIFORNIA CONSTANT VOLUME SINGLE ZONE UNITARY AIR CONDITIONER AND HEAT PUMP SYSTEMS CEC Volume Single Zone Unitary Air Conditioner and Heat Pump Systems (Page 1 of 4) Project Name CONSTANT VOLUME SINGLE ZONE UNITARY AIR CONDITIONER AND HEAT PUMP SYSTEMS CEC-MECH-3A (Revised 08

3

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

E-Print Network [OSTI]

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

Yu, Bingyi

2013-01-01T23:59:59.000Z

4

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

E-Print Network [OSTI]

EFFECTS OF SYSTEM CYCLING, EVAPORATOR AIRFLOW, AND CONDENSER COIL FOULING ON THE PERFORMANCE OF RESIDENTIAL SPLIT-SYSTEM AIR CONDITIONERS A Thesis by JEFFREY BRANDON DOOLEY Submitted to the Office of Graduate Studies... COIL FOULING ON THE PERFORMANCE OF RESIDENTIAL SPLIT-SYSTEM AIR CONDITIONERS A Thesis by JEFFREY BRANDON DOOLEY Submitted to Texas A&M University in partial fulfillment of the requirements for the degree of MASTER...

Dooley, Jeffrey Brandon

2005-02-17T23:59:59.000Z

5

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

E-Print Network [OSTI]

Baseline Efficient Air Conditioners . . . . . . 28 AverageEfficient Air Conditioners . . . . . . . . . . . . . . . . .Btu/h Commercial Air Conditioners . . . . . . . . . . . . .

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

2004-01-01T23:59:59.000Z

6

Rating of Mixed Split Residential Air Conditioners  

E-Print Network [OSTI]

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

Domanski, P. A.

1988-01-01T23:59:59.000Z

7

Stirling Air Conditioner for Compact Cooling  

SciTech Connect (OSTI)

BEETIT Project: Infinia is developing a compact air conditioner that uses an unconventional high efficient Stirling cycle system (vs. conventional vapor compression systems) to produce cool air that is energy efficient and does not rely on polluting refrigerants. The Stirling cycle system is a type of air conditioning system that uses a motor with a piston to remove heat to the outside atmosphere using a gas refrigerant. To date, Stirling systems have been expensive and have not had the right kind of heat exchanger to help cool air efficiently. Infinia is using chip cooling technology from the computer industry to make improvements to the heat exchanger and improve system performance. Infinia’s air conditioner uses helium gas as refrigerant, an environmentally benign gas that does not react with other chemicals and does not burn. Infinia’s improvements to the Stirling cycle system will enable the cost-effective mass production of high-efficiency air conditioners that use no polluting refrigerants.

None

2010-09-01T23:59:59.000Z

8

Determining benefits and costs of improved central air conditioner efficiencies  

E-Print Network [OSTI]

Products: Central Air Conditioners and Heat Pumps Energyof Improved Central Air Conditioner Efficiencies Authorsresidential-type central air conditioner energy-efficiency

Rosenquist, G.

2010-01-01T23:59:59.000Z

9

Dirty air conditioners: Energy implications of coil fouling  

E-Print Network [OSTI]

1473. Neal, L. 1992. Air Conditioner Efficiency in the Realof a Residential Air Conditioner. Proceedings of the 1992of new residential air conditioners in Phoenix, Arizona.

Siegel, Jeffrey; Walker, Iain; Sherman, Max

2002-01-01T23:59:59.000Z

10

DEVELOPMENT OF SOLAR DRIVEN ABSORPTION AIR CONDITIONERS AND HEAT PUMPS  

E-Print Network [OSTI]

DRIVEN ABSORPTION AIR CONDITIONERS AND HEAT PUMPS K. Dao, M.ABSORPTION AIR CONDITIONERS AND HEAT PUMPS* K. DAO, M.

Dao, K.

2013-01-01T23:59:59.000Z

11

AIR CONDITIONER REQUEST EXTREME MEDICAL CIRCUMSTANCES  

E-Print Network [OSTI]

AIR CONDITIONER REQUEST DUE TO EXTREME MEDICAL CIRCUMSTANCES TO BE COMPLETED BY ATTENDING Moderate Significant Is the use of an air conditioner desirable Yes No OR essential Yes No to the management of allergy? Is the use of an air conditioner

12

High-Efficiency Window Air Conditioners - Building America Top...  

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

Window Air Conditioners - Building America Top Innovation This photo shows a window air conditioning unit in place in a window frame. Window air conditioners are inexpensive,...

13

Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners  

E-Print Network [OSTI]

Bridging the Efficiency Gap: Commercial Packaged Rooftop Air Conditioners John Shugars, Consultant ofcommercialpackaged air conditioners, explore the reasons behindthis efficiency gap, and assess opportunities). Although sales of rooftop air conditioners have steadily increased over the past decade, the efficiency

14

DEVELOPMENT OF SOLAR DRIVEN ABSORPTION AIR CONDITIONERS AND HEAT PUMPS  

E-Print Network [OSTI]

SOLAR DRIVEN ABSORPTION AIR CONDITIONERS AND HEAT PUMPS K.Driven Absorption Air-Conditioner", K. Dao, M. Simmons, R.SOLAR DRIVEN ABSORPTION AIR CONDITIONERS AND HEAT PUMPS* K.

Dao, K.

2013-01-01T23:59:59.000Z

15

Electrolux Gibson Air Conditioner and Equator Clothes Washer...  

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

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

16

Natural Gas Heat Pump and Air Conditioner | Department of Energy  

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

Natural Gas Heat Pump and Air Conditioner Natural Gas Heat Pump and Air Conditioner Lead Performer: Thermolift - Stony Brook, NY Partners: -- New York State Energy Research &...

17

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

E-Print Network [OSTI]

by the manufacturer for a specific indoor and outdoor temperatures. Once the full charge was determined, the unit was subjected to 40%, 30%, 20%, 15%, 10%, and 5% undercharging and 5%, 10%, 15%, and 20% overcharging of refrigerant by mass. The fully charged tests were... CONDITION All tests were performed on a split system central air conditioner provided by the Trane company. To determine the proper amount of refrigerant charge needed in the system and the unit's corresponding performance, charging specifications...

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

1989-01-01T23:59:59.000Z

18

China Energy Efficiency Round Robin Testing Results for Room Air Conditioners  

E-Print Network [OSTI]

Blast-Type Air Conditioners and Heat Pump. The correspondingair/air air conditioners and heat pumps. Some improvementsconnected air- conditioner (heat pump) units, household

Zhou, Nan

2010-01-01T23:59:59.000Z

19

Improving Air-Conditioner and Heat Pump Modeling (Presentation)  

SciTech Connect (OSTI)

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

Winkler, J.

2012-03-01T23:59:59.000Z

20

Covered Product Category: Residential Central Air Conditioners...  

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

operate on single-phase current and have cooling capacities less than 65,000 Btuh. Room air conditioners (window and through-the-wall) are covered by a separate specification,...

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

China Energy Efficiency Round Robin Testing Results for Room Air Conditioners  

E-Print Network [OSTI]

Results for Room Air Conditioners Nan Zhou David FridleyTable of Contents I. Air Conditioner Round Robin TestingAir Conditioners..

Zhou, Nan

2010-01-01T23:59:59.000Z

22

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

E-Print Network [OSTI]

Measuring Short-term Air Conditioner Demand Reductions forMeasuring Short-term Air Conditioner Demand Reductions forpilots have shown that air conditioner (AC) electric loads

Bode, Josh

2013-01-01T23:59:59.000Z

23

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

E-Print Network [OSTI]

Sector Study of Room Air Conditioners in China) , ChinaQi Shichang ( China’s Air Conditioner Market ), China Lightand Constant-Speed Air Conditioners." ASHRAE Transactions.

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

2001-01-01T23:59:59.000Z

24

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

E-Print Network [OSTI]

Final Summary Report by Air Conditioner Evaluation Standardreversible residential air conditioners and heat pumps usingJFS, 2007: “New Air Conditioners with Infrared Sensors

Shah, Nihar

2014-01-01T23:59:59.000Z

25

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

E-Print Network [OSTI]

A split-system direct-expansion air conditioner was used to empirically determine temperature and return-air humidity indicators that could detect performance degradation resulting from degraded conditions. The air conditioner test bench...

Watt, James Bonner

1997-01-01T23:59:59.000Z

26

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

E-Print Network [OSTI]

of the coil was 20.94 ft2 with refrigerant tube sizes of 3/8". The outdoor fan was located on the top of the outdoor coil. The fan specifications are given in Table 3.1. Figure 3.3 - Detail of Outdoor Test Section 25 Table 3.1 - Fan Specification...ESL-TR-88/07-01 AN EVALUATION OF IMPROPER REFRIGERANT CHARGE ON THE PERFORMANCE OF A SPLIT SYSTEM AIR CONDITIONER WITH CAPILLARY TUBE EXPANSION FINAL REPORT Submitted by Mohsen Farzad Dennis L. O'Neal Prepared For ENERGY SYSTEMS LABORATORY RESEARCH...

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

1988-01-01T23:59:59.000Z

27

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

Energy Savers [EERE]

air conditioner is one solution to cooling part of a house. | Photo courtesy of iStockphotoLUke1138. Ductless Mini-Split Air Conditioners Ductless, Mini-Split Heat Pumps...

28

The effects of galvanic corrosion on air conditioner performance  

E-Print Network [OSTI]

Corrosion of air conditioner outdoor heat exchangers (condensers) poses a significant problem for consumers living in coastal regions. This research sought to experimentally determine effects of galvanic corrosion on air conditioner condenser coils...

Grisham, Phillip Ryan

2001-01-01T23:59:59.000Z

29

E-Print Network 3.0 - absorption air conditioner Sample Search...  

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

Rating Summary: size systems such as absorption or vapor compression air-conditioners or heat pumps, the following... degradation. There are two possible designs for adjusting the...

30

Covered Product Category: Room Air Conditioners  

Broader source: Energy.gov [DOE]

FEMP provides acquisition guidance across a variety of product categories, including room air conditioners, which are an ENERGY STAR®-qualified product category. Federal laws and requirements mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law.

31

Covered Product Category: Residential Central Air Conditioners  

Broader source: Energy.gov [DOE]

FEMP provides acquisition guidance across a variety of product categories, including residential central air conditioners (CACs), which are an ENERGY STAR®-qualified product category. Federal laws and requirements mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law.

32

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

SciTech Connect (OSTI)

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

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

2006-07-01T23:59:59.000Z

33

Laboratory Performance Testing of Residential Window Air Conditioners  

SciTech Connect (OSTI)

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

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

2013-03-01T23:59:59.000Z

34

EECBG Direct Equipment Purchase Air Conditioner Guide Equipment Type  

E-Print Network [OSTI]

EECBG Direct Equipment Purchase Air Conditioner Guide Equipment Type Size Category (Btu/h) Size.ahridirectory.org/ceedirectory/pages/ac/cee/defaultSearch.aspx 12,000 Btu/h = 1 ton Less than 65,000 Btu/h Air Conditioners, Air Cooled Air Conditioners, Water completed by the California Energy Commission at a rate of 12,000 Btu/h per ton of air conditioning Source

35

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

E-Print Network [OSTI]

for Refrigerators and Air Conditioners in India. Michael A.followed by room air conditioners. Both of these appliancesfrost-free units. Room air conditioners in India have

McNeil, Michael A.

2010-01-01T23:59:59.000Z

36

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

E-Print Network [OSTI]

Efficiency of Room Air Conditioners in India: OpportunitiesStar Labeled room Air Conditioners. ” Ministry of Power (of Superefficient Room Air Conditioners,” Lawrence Berkeley

Phadke, Amol

2014-01-01T23:59:59.000Z

37

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

E-Print Network [OSTI]

APPROVED ICE STORAGE AIR CONDITIONERS Revised as of 06-18-2008 The following vendors and their ice storage air conditioners models can be used in the ice storage air conditioner compliance option. Input

38

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

E-Print Network [OSTI]

Standard Levels for Room Air Conditioners Michael A. McNeilFigure 1 – MEPS for 1.5 ton Window Air Conditioners – 1994-4 Figure 2 – Air Conditioner Test Data and Rating Plan -

McNeil, Michael A.; Iyer, Maithili

2008-01-01T23:59:59.000Z

39

Air Conditioner Compressor Performance Model  

SciTech Connect (OSTI)

During the past three years, the Western Electricity Coordinating Council (WECC) Load Modeling Task Force (LMTF) has led the effort to develop the new modeling approach. As part of this effort, the Bonneville Power Administration (BPA), Southern California Edison (SCE), and Electric Power Research Institute (EPRI) Solutions tested 27 residential air-conditioning units to assess their response to delayed voltage recovery transients. After completing these tests, different modeling approaches were proposed, among them a performance modeling approach that proved to be one of the three favored for its simplicity and ability to recreate different SVR events satisfactorily. Funded by the California Energy Commission (CEC) under its load modeling project, researchers at Pacific Northwest National Laboratory (PNNL) led the follow-on task to analyze the motor testing data to derive the parameters needed to develop a performance models for the single-phase air-conditioning (SPAC) unit. To derive the performance model, PNNL researchers first used the motor voltage and frequency ramping test data to obtain the real (P) and reactive (Q) power versus voltage (V) and frequency (f) curves. Then, curve fitting was used to develop the P-V, Q-V, P-f, and Q-f relationships for motor running and stalling states. The resulting performance model ignores the dynamic response of the air-conditioning motor. Because the inertia of the air-conditioning motor is very small (H<0.05), the motor reaches from one steady state to another in a few cycles. So, the performance model is a fair representation of the motor behaviors in both running and stalling states.

Lu, Ning; Xie, YuLong; Huang, Zhenyu

2008-09-05T23:59:59.000Z

40

2015-02-12 Issuance: Test Procedures for Portable Air Conditioners...  

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

Test Procedures for Portable Air Conditioners; Notice of Proposed Rulemaking 2015-02-12 Issuance: Test Procedures for Portable Air Conditioners; Notice of Proposed Rulemaking...

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

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

E-Print Network [OSTI]

of laboratory tests of a three-ton, capillary tube expansion, split-system air conditioner, system capacity and efficiency data available from manufacturer's literature, and assumptions about relative sizing of the equipment to cooling load on a residence. A...

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

42

E-Print Network 3.0 - air conditioners electronic Sample Search...  

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

AND NEXT GENERATION Summary: ... xvi Adsorption Heat Pumps and Air Conditioners ... xvi Absorption Chillers......

43

E-Print Network 3.0 - air conditioner screening Sample Search...  

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

AND NEXT GENERATION Summary: ... xvi Adsorption Heat Pumps and Air Conditioners ... xvi Absorption Chillers......

44

E-Print Network 3.0 - adsorption air conditioner Sample Search...  

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

AND NEXT GENERATION Summary: ... xvi Adsorption Heat Pumps and Air Conditioners ... xvi Absorption Chillers......

45

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

SciTech Connect (OSTI)

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

Not Available

2011-02-01T23:59:59.000Z

46

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

E-Print Network [OSTI]

replacement options have and are being developed. Choice of Refrigerant: The most efficient air conditioners

Shah, Nihar

2014-01-01T23:59:59.000Z

47

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

SciTech Connect (OSTI)

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

Piotr A. Domanski; W. Vance Payne

2002-10-31T23:59:59.000Z

48

Four Central Air Conditioners Determined Noncompliant With Energy...  

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

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

49

DEVELOPMENT OF SOLAR DRIVEN ABSORPTION AIR CONDITIONERS AND HEAT PUMPS  

E-Print Network [OSTI]

AIR CONDITIONERS AND HEAT PUMPS K. Dao, M. Wahlig, E. Wali,are liquid paths. DM: multistage pump driver, driven by highvapor. DW: main circulation pump driven by strong absorbent.

Dao, K.

2013-01-01T23:59:59.000Z

50

An Analysis of Efficiency Improvements in Room Air Conditioner  

E-Print Network [OSTI]

NAECA NATIONAL APPLIANCE ENERGY CONSERVATION ACT NBS NATIONAL BUREAU OF STANDARDS NECPA NATIONAL ENERGY CONSERVATION POLICY ACT NTU NUMBER OF TRANSFER UNITS OEM ORIGINAL EQUIPMENT MANUFACTURER ORNL OAK RIDGE NATIONAL LABORATORY RAC ROOM AIR CONDITIONER.... There are two public domain models that we have considered using for this analysis: the Oak Ridge National Laboratory (ORNL) heat pump model [1] and the Arthur D. Little (ADL) room air conditioner model [2]. The ORNL model was completed in 1981. Although...

O'Neal, D. L.; Penson, S. B.

1988-01-01T23:59:59.000Z

51

Residential Air Conditioner Direct Load Control "Energy Partners Program"  

E-Print Network [OSTI]

RESIDENTIAL AIR CONDITIONER DIRECT LOAD CONTROL "ENERGY PARTNERS PROGRAMn John D. Cook Supervisor Houston ABSTRACT Demand side management programs like Energy Partners can provide an effective peak reducing capability which within a.... In this partnership the customer allows HLfP to install a I switch on his/her air conditioner or heat pump and i periodically cycle the unit off during the hottest summer 1 days. In return the customer benefits by receiving an incentive payment, as well...

Cook, J. D.

1994-01-01T23:59:59.000Z

52

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

E-Print Network [OSTI]

Central Air Conditioners and Heat Pumps Energy ConservationCentral Air Conditioners and Heat Pumps. Washington DC:Central Air Conditioners and Heat Pumps Energy Conservation

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

2001-01-01T23:59:59.000Z

53

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

E-Print Network [OSTI]

Products: Central Air Conditioners and Heat Pumps EnergyResidential Central Air Conditioners and Heat Pumps.Products: Central Air Conditioners and Heat Pumps Energy

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

2001-01-01T23:59:59.000Z

54

Installation of Window Air Conditioners Page 1 of 2 Virginia Polytechnic Institute and State University No. 5705 Rev.: 3  

E-Print Network [OSTI]

Installation of Window Air Conditioners Page 1 of 2 Virginia Polytechnic Institute and State __________________________________________________________________________________ Subject: Installation of Window Air Conditioners........................................................................................................................................1 1. Purpose To define a policy for installation of window air conditioners that avoids exterior

Buehrer, R. Michael

55

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

Energy Savers [EERE]

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

56

Influence of Air Conditioner Operation on Electricity Use and Peak Demand  

E-Print Network [OSTI]

Electricity demand due to occupant controlled room air conditioners in a large mater-metered apartment building is analyzed. Hourly data on the electric demand of the building and of individual air conditioners are used in analyses of annual...

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

1987-01-01T23:59:59.000Z

57

Air Conditioner User Behavior in a Master-Metered Apartment Building  

E-Print Network [OSTI]

Air conditioner operation was studied in order to understand how energy consumption and peak power are determined by user behavior, equipment operation and building characteristics. In a multi-family building, thirteen room air conditioners were...

Kempton, W.; Feuermann, D.; McGarity, A. E.

1987-01-01T23:59:59.000Z

58

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

59

Room Air Conditioners | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to: navigation, searchVirginia BlueRiverwoods,RockRipple,Rollingwood, Texas:Conditioners Jump

60

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

SciTech Connect (OSTI)

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

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

2001-08-28T23:59:59.000Z

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

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

SciTech Connect (OSTI)

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

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

1991-10-01T23:59:59.000Z

62

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

E-Print Network [OSTI]

An experimental study was conducted to quantify the effect of return air leakage from hot/humid attic spaces on the performance of a residential air conditioner. Tests were conducted in psychrometric facilities where temperatures and humidities...

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

1996-01-01T23:59:59.000Z

63

Central Air conditioners | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160Benin:Energy Information on PV EconomicsOregon:Centereach,conditioners Jump to:

64

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

DOE Patents [OSTI]

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

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

2002-01-01T23:59:59.000Z

65

Assessment of Environmentally Friendly Refrigerants for Window Air Conditioners  

SciTech Connect (OSTI)

This paper presents technical assessment of environmentally friendly refrigerants for window air conditioners that currently use refrigerant R410A for residential and commercial applications. The alternative refrigerants that are studied for its replacement include R32, R600a, R290, R1234yf, R1234ze and a mixture of R32 (90% molar concentration) and R125 (10% molar concentration). Baseline experiments were performed on a window unit charged with R410A. The ORNL Heat Pump Design Model was calibrated with the baseline data and was used to assess the comparative performance of the WAC with alternative refrigerants. The paper discusses the advantages and disadvantages of each refrigerants and their suitability for window air conditioners.

Bansal, Pradeep [ORNL] [ORNL; Shen, Bo [ORNL] [ORNL

2014-01-01T23:59:59.000Z

66

Development and Analysis of Desiccant Enhanced Evaporative Air Conditioner Prototype  

SciTech Connect (OSTI)

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

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

2012-04-01T23:59:59.000Z

67

Determining benefits and costs of improved central air conditioner efficiencies  

SciTech Connect (OSTI)

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

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

2001-01-12T23:59:59.000Z

68

The Impact of Energy Recovery on Window Air-conditioner Efficiency  

E-Print Network [OSTI]

An experimental energy recovering air-conditioner can produce fresh air exchange heat with exhaust air in the heat exchanger, which has no additional moving parts. The EER of the experimental air-conditioner (EAC) is increased by 17.4~37.3 percent...

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

2006-01-01T23:59:59.000Z

69

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

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

energy optimization tool to analyze Summary: --when an existing component (e.g., an air conditioner) fails, it must be replaced by a more efficient component (e... National...

70

Measured Impacts of Air Conditioner Condenser Shading  

E-Print Network [OSTI]

reaching the expansion valve. In theory, the efficiency of vapor compression air conditioning can be improved through two primary mechanisms associated with condenser shading: Direct shading. Incident solar radiation can pose approximately a 1,000 w...]: IEYPERAlURL COUPARlSOn A/C SHADING DP. 1 (Some): SOUR RADlAllON COUPARISON I=AYEI[Nl KYP orq=82.1 , mu=87.(22 Z=CONDEHSIR ARU AIR lEYP orq=83.8 , mox=02.858 TIME OF DAY, (hr) 9 12 15 TIME OF DAY, (hr) Figure 3. Sample daily 15-minute data for June 21...

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

1996-01-01T23:59:59.000Z

71

Common Air Conditioner Problems | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy UsageAUDITVehicles » AlternativeUp HomeHorse Backwards | DepartmentCommon Air

72

Maintaining Your Air Conditioner | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy UsageAUDITVehicles »Exchange Visitorsfor Shade LandscapingMaintaining Your Air

73

Central Air Conditioner Enforcement Policy Statement | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energyon ArmedWaste andAccessCO2 Injection Begins inCarmineCentral Air Conditioner

74

ROOM AIR CONDITIONER WALL MOUNTED type  

E-Print Network [OSTI]

/ 150 (76 / 68) 238 / 207 (108 / 94) REFRIGERANT CHARGING PIPE LENGTH 25 ft. (7.5 m) 33 ft. (10 m) 49 ftY3E-A C O N T E N T S SPECIFICATIONS OUTLINE AND DIMENSIONS REFRIGERANT SYSTEM DIAGRAM CIRCUIT, Induction motor, Recipro CODE H25B18QABCA H25B18QABCA H25B24QABCA H25B24QABCA H25B35QABCA REFRIGERANT R-22

Kleinfeld, David

75

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

E-Print Network [OSTI]

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

Tennessee, University of

76

Development of Temperature and Humidity-Based Indicators for Diagnosing Problems in Low Tonnage, Split System Air Conditioners  

E-Print Network [OSTI]

of HVAC systems for building optimization, fault detection and diagnosis. October. Finland: Technical Research Center of Finland, Laboratory of Heating and Ventilation, B. 0. Box 206 (Lampomiehenkuja 3) 02150 ESPOO. Kaler. G. 1988. Expert system...

Watt, J. B.; O'Neal, D. L.; Haberl, J. S.

1998-01-01T23:59:59.000Z

77

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

E-Print Network [OSTI]

Conditioners, Air Source HeatPumps, and Sound-Rated Outdoor Unitary Equipment that ARI publishes twice a yearCl], In addition to the ARI certification, many manufacturerspublish detailed performance (capacity, efficiency, and dehumidification) data....2 - Performance and hardware data collectedfor this survey. 3.2 References 1. "Directory of Certified Unitary Air Conditioners, Air Source HeatPumps, and Sound-Rated Outdoor Unitary Equipment", Semi-Annual Issues, Air Conditioning and Refrigeration Institute...

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

1987-01-01T23:59:59.000Z

78

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

SciTech Connect (OSTI)

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

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

2001-10-10T23:59:59.000Z

79

E-Print Network 3.0 - air conditioners water Sample Search Results  

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

Moving the Market toward High Efficiency Summary: and water source air conditioners and heat pumps <135,000 Btuh and for large commercial packaged water... h and <135,000 Btuh...

80

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

SciTech Connect (OSTI)

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

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

2013-01-01T23:59:59.000Z

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

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

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

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

82

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

E-Print Network [OSTI]

and the condenser of a vapor-compression air conditioner. The liquid desiccants studied were lithium chloride, lithium bromide, calcium chloride, and triethylene glycol. Each candidate desiccant was subjected to a screening process which weighed the merits...

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

1988-01-01T23:59:59.000Z

83

E-Print Network 3.0 - automobile air conditioners Sample Search...  

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

Search Powered by Explorit Topic List Advanced Search Sample search results for: automobile air conditioners Page: << < 1 2 3 4 5 > >> 1 7-55E An office that is being cooled...

84

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

E-Print Network [OSTI]

An experimental and analytical study concerned with the off-design refrigerant charging of air conditioners is presented. A series of experiments were conducted to characterize the effects of refrigerant charge and type of expansion device...

Farzad, Mohsen

85

Development of minimum efficiency standards for large capacity air conditioners, and commercial water heaters, refrigerators, and freezers. Final report  

SciTech Connect (OSTI)

The California Energy Resources Conservation and Development Commission has promulgated appliance energy efficiency standards and energy conservation standards for new construction with the objective of reducing energy consumption in the State of California. The following appliance categories are specifically addressed: large capacity air conditioners; commercial water heaters; and commercial refrigerators and freezers. The tasks that have been performed include: an energy use pattern study for the subject equipment; an examination of the size distribution of commercial air conditioning equipment; an examination of the different types of commercial air conditioning systems; an evaluation of the effectiveness of economizers in reducing commercial air conditioning system energy consumption in California; an examination of the effects of oversizing commercial air conditioners; a detailed study of supermarket refrigeration and air conditioning equipment; an evaluation of the economic feasibility of utilizing air conditioner waste heat to heat water; an assessment of the applicability of existing test procedures for small water heaters to large water heaters; and a brief investigation of the marketing and distribution systems for air conditioning and refrigeration equipment. Results of the efforts are described.

Merrill, P.S.; Rettberg, R.J.; Erickson, R.C.; Toor, J.S.

1980-05-01T23:59:59.000Z

86

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.

87

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

SciTech Connect (OSTI)

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

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

1996-05-01T23:59:59.000Z

88

Cromer Cycle Air Conditioner: A Study to Confirm Target Performance  

E-Print Network [OSTI]

The Cromer cycle uses a desiccant wheel operating in conjunction with a typical air conditioning system. Simulations and laboratory prototypes demonstrate that the cycle has the potential for enhanced humidity control with sensible heat ratios...

Cromer, C. J.

2001-01-01T23:59:59.000Z

89

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

E-Print Network [OSTI]

??An experimental study was conducted to quantify the effect of several installation items on the high outdoor ambient temperature performance of air conditioners. These installation… (more)

Rodriguez, Angel Gerardo

2012-01-01T23:59:59.000Z

90

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

SciTech Connect (OSTI)

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

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

1984-07-01T23:59:59.000Z

91

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

SciTech Connect (OSTI)

China has experienced tremendous growth in the production and sales of room air conditioners over the last decade. Although minimum room air conditioner energy efficiency standards have been in effect since 1989, no efforts were made during most of the 1990's to update the standard to be more reflective of current market conditions. In 1999, China's State Bureau of Technical Supervision (SBTS) included in their annual plan the development and revision of the 1989 room air conditioner standard, and experts from SBTS worked together with LBNL to analyze the new standards. Based on the engineering and life cycle-cost analyses performed, the most predominant type of room air conditioner in the Chinese market (split-type with a cooling capacity between 2500 and 4500 W (8500 Btu/h and 15,300Btu/h)) can have its efficiency increased cost-effectively to an energy efficiency ratio (EER) of 2.92 W/W (9.9 Btu/hr/W). If an EER standard of 2.92 W/W became effective in 2001, Chinese consumers would be estimated to save over 3.5 billion Yuan (420 million U.S. dollars) over the period of 2001-2020. Carbon emissions over the same period would be reduced by approximately 12 million metric tonnes.

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

2001-02-01T23:59:59.000Z

92

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

E-Print Network [OSTI]

Air Conditioner Efficiency under Hot Dry and Hot Humid Conditions - The Utility Perspective Ammi Amarnath Technical Leader, Energy Efficiency & Demand Response Program Electric Power Research Institute 3420 Hillview Avenue Palo Alto, CA... are summarized below. Recommendations ? Establish a utility and energy efficiency agency coordinating council for regional standards; ? Identify regional centers to provide the institutional support; ? Develop recommended best practices for regionally based...

Amarnath, A.

93

Cornell's (LSC) project began providing 16,000 tons of cooling (1 ton of cooling = 12,000 Btu/hr, or approximately one large residential window air conditioner) to Cornell University's Ithaca  

E-Print Network [OSTI]

window air conditioner) to Cornell University's Ithaca campus in July of 2000. This project has almost completely replaced mechanical refrigeration for the Cornell district cooling system with the following benefits: · Greater LSC has replaced

Keinan, Alon

94

Measure Guideline: Air Conditioner Diagnostics, Maintenance, and Replacement  

SciTech Connect (OSTI)

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

Springer, D.; Dakin, B.

2013-03-01T23:59:59.000Z

95

7-55E An office that is being cooled adequately by a 12,000 Btu/h window air-conditioner is converted to a computer room. The number of additional air-conditioners that need to be installed is to be determined.  

E-Print Network [OSTI]

7-20 7-55E An office that is being cooled adequately by a 12,000 Btu/h window air-conditioner is converted to a computer room. The number of additional air-conditioners that need to be installed/h. Then noting that each available air conditioner provides 4,000 Btu/h cooling, the number of air- conditioners

Bahrami, Majid

96

The Explorationon the Energy Saving Potential of an Innovative Dual-temperature Air Conditioner and the Mechanism of the Theoretical Mixed Refrigeration Cycl  

E-Print Network [OSTI]

The Exploration on the Energy Saving Potential of an Innovative Dual-temperature Air Conditioner and the Mechanism of the Theoretical Mixed Refrigeration Cycle Zhao Lei, Zhao Xijin, Hu Andu Professor, graduate student, graduate student...-temperature air conditioning system and its corresponding theoretical mixed refrigeration cycle are proposed. This consists of a separate air handling unit and a metal radiation panel as the dual-temperature evaporators, a compressor, a condenser, two thermal...

Zhao,L.; Zhao,X.; Hu,A.

2014-01-01T23:59:59.000Z

97

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

E-Print Network [OSTI]

A field investigation was carried out in an office building of Changsha city in winter and summer, the influence of different running modes, curtain styles and room temperature set point on energy consumption of room air conditioner (RAC...

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

2006-01-01T23:59:59.000Z

98

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

E-Print Network [OSTI]

For the purpose of developing optimized control algorithm for room air-conditioners to ensure their energy efficiency, a short time interval (i.e., one minute) simulation of building thermal performance is necessary because the sampling time...

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

2006-01-01T23:59:59.000Z

99

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

E-Print Network [OSTI]

This study assesses the dehumidifying performance of the high efficiency residential central air conditioners (CAC) in hot/humid climates typified by that of Houston and Galveston. The performance study is based on such factors as: (i) weather (ii...

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

1988-01-01T23:59:59.000Z

100

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

E-Print Network [OSTI]

-Enhanced Cooling and Dehumidification System," ASBRAE Transactions 1994, V.100, Pt. 2, #3816, American Society of Heating, Refrigeration and Air Conditioning Engineers, Atlanta, GA, 1994 [7] Chant, E. E., Transient and Stearj, State Simulations of an Advanced..., the Electric Power Research Institute (EPRI) estimate from their surveys that 30% of their customers use dehumidifiers. [1] In supermarkets, where much of the sensible cooling is already done by the display cases, wasteful overcooling is done...

Cromer, C. J.

2000-01-01T23:59:59.000Z

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

STRATEGIC PLAN TO REDUCE THE ENERGY IMPACT OF AIR CONDITIONERS  

E-Print Network [OSTI]

Acknowledgements This report represents the efforts of many experts from the air conditioning industry who Manufacturer Freus Air Conditioning Jim Bazemore Consultant Energy Market Innovations, Inc. Doug Beaman of Heating and Air Conditioning Industries Kahn Air Conditioning Tav Commins Staff, Buildings

102

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

Reports and Publications (EIA)

In January 2004, after years of litigation in a case that pitted environmental groups and Attorneys General from 10 states against the U.S. Secretary of Energy, the U.S. Court of Appeals for the Second Circuit reestablished the central air conditioner and heat pump standard originally set in January 200. The Courts ruling, which struck down a May 2002 rollback of the 2001 standard to a 12 Seasonal Energy Efficiency Ratio (SEER) mandates that all new central air conditioners and heat pumps meet a 13 SEER standard by January 2006, requiring a 30% increase in efficiency relative to current law. The Annual Energy Outlook 2005 reference case incorporates the 13 SEER standard as mandated by the Courts ruling.

2005-01-01T23:59:59.000Z

103

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

SciTech Connect (OSTI)

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

McNeil, Michael A.; Iyer, Maithili

2007-03-01T23:59:59.000Z

104

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

SciTech Connect (OSTI)

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

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

1995-07-01T23:59:59.000Z

105

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

E-Print Network [OSTI]

An experimental study was conducted to quantify the effect of several installation items on the high outdoor ambient temperature performance of air conditioners. These installation items were: improper amount of refrigerant charge, reduced...

Rodriguez, Angel Gerardo

2012-06-07T23:59:59.000Z

106

Model-Based Commissioning for Filters in Room Air Conditioners  

E-Print Network [OSTI]

This paper proposes a model that can estimate filter resistance. Two sorts of value are used as inputs to estimate filter resistance. One is the power consumed by the fan in the indoor unit and the other is the thermal performance. For the room air...

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

2004-01-01T23:59:59.000Z

107

Desiccant Moisture Exchange for Dehumidification Enhancement of Air Conditioners  

E-Print Network [OSTI]

* -led use of this inprarrPd air mtianer cycle with dssicrants will met likely occur in the cammrcial sector bbm desiccants are acmnonly IaKWn end the potential for savimy is greatar. Cne patential amnercial a~plication where the humidity pmblm...

Cromer, C. J.

1988-01-01T23:59:59.000Z

108

E-Print Network 3.0 - air-conditioners furnaces air Sample Search...  

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

Residential Space Summary: and electricity. These include boilers and furnaces for heating, air-conditioning systems and heat-pump systems... ) Space Heating Only Furnaces:...

109

Improving Best Air Conditioner Efficiency by 20-30% through a High Efficiency Fan and Diffuser Stage Coupled with an Evaporative Condenser Pre-Cooler  

SciTech Connect (OSTI)

The Florida Solar Energy Center (FSEC) conducted a research project to improve the best residential air conditioner condenser technology currently available on the market by retrofitting a commercially-available unit with both a high efficiency fan system and an evaporative pre-cooler. The objective was to integrate these two concepts to achieve an ultra-efficient residential air conditioner design. The project produced a working prototype that was 30% more efficient compared to the best currently-available technologies; the peak the energy efficiency ratio (EER) was improved by 41%. Efficiency at the Air-Conditioning and Refrigeration Institute (ARI) standard B-condition which is used to estimate seasonal energy efficiency ratio (SEER), was raised from a nominal 21 Btu/Wh to 32 Btu/Wh.

Parker, Danny S; Sherwin, John R; Raustad, Richard

2014-04-10T23:59:59.000Z

110

Covered Product Category: Room Air Conditioners | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in Review: Top FiveDepartmentfor EngineeringDepartment| Department of EnergyRoom Air

111

2014-05-05 Issuance: Test Procedure for Portable Air Conditioners; Notice of Data Availability  

Broader source: Energy.gov [DOE]

This document is a pre-publication Federal Register notice of data availabilty regarding test procedures for portable air conditioners, as issued by the Deputy Assistant Secretary for Energy Efficiency on May 5, 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.

112

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

E-Print Network [OSTI]

This paper discusses the measured degradation in performance of a residential air conditioning system operating under reduced evaporator air flow. Experiments were conducted using a R-22 three-ton split-type cooling system with a short-tube orifice...

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

113

Energy Impacts of Oversized Residential Air Conditioners -- Simulation Study of Retrofit Sequence Impacts  

SciTech Connect (OSTI)

This research addresses the question of what are the energy consequences for oversizing of an air conditioner in a home. Conventional wisdom holds that oversizing the AC results in significant energy penalties. However, the reason for this was shown to be due to crankcase heaters and not due to cycling performance of the AC, and is only valid for a particular set of assumptions. Adding or removing individual characteristics, such as ducts or crankcase heaters, can have measurable impacts on energy use. However, with all other home characteristics held constant, oversizing the AC generally has a small effect on cooling energy use, even if the cycling performance of the unit is poor. The relevant aspects of air conditioner modeling are discussed to illustrate the effects of the cycling loss coefficient, Cd, capacity, climate, ducts and parasitic losses such as crankcase heaters. A case study of a typical 1960's vintage home demonstrates results in the context of whole building simulations using EnergyPlus.

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

2014-11-01T23:59:59.000Z

114

Conservation Division regiulations for appliance-efficiency standards relating to refrigerators and freezers, room air conditioners, central air conditioners, gas space heaters, water heaters, plumbing fittings, gas clothes dryers, and gas cooking appliances  

SciTech Connect (OSTI)

The text of the appliance efficiency standards for certain types of new appliances sold in California is presented. Specifications and test methods to identify complying refrigerators, freezers, air conditioners, gas space heaters, water heaters, plumbing fittings, gas clothes dryers, and gas cooking appliances are covered.

Not Available

1981-12-16T23:59:59.000Z

115

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

SciTech Connect (OSTI)

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

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

2013-10-01T23:59:59.000Z

116

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

117

EA-1892: Direct Final Rule Energy Conservation Standards for Residential Furnaces and Residential Central Air Conditioners & Heat Pumps  

Broader source: Energy.gov [DOE]

This EA evaluates the environmental impacts of a proposal to adopt energy conservation standards for various consumer products and certain commercial and industrial equipment, including residential furnaces and residential air conditioners and heat pumps, as required by the Energy Policy and Conservation Act, as amended (42 U.S.C. 6291 et seq.)

118

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

SciTech Connect (OSTI)

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

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

2004-03-31T23:59:59.000Z

119

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

E-Print Network [OSTI]

of energy storage and water heater all year round”, Energyof thermal energy storage and water heaters to ensure theair conditioner, water heater and energy storage device is

Shah, Nihar

2014-01-01T23:59:59.000Z

120

2014-03-06 Issuance: Test Procedures for Packaged Terminal Air Conditioners and Packaged Terminal Heat Pumps; Notice of Proposed Rulemaking  

Broader source: Energy.gov [DOE]

This document is a pre-publication Federal Register notice of proposed rulemaking regarding test procedures for packaged terminal air conditioners and packaged terminal heat pumps, as issued by the Deputy Assistant Secretary on March 6, 2014.

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

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

E-Print Network [OSTI]

Central Air Conditioners and Heat Pumps Energy ConservationW.R. Coleman. 1990. “Heat Pump Life and Compressor LongevityC.C.. 1990. “Predicting Future Heat Pump Production Volume

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

2001-01-01T23:59:59.000Z

122

A Novel, Low-Cost, Reduced-Sensor Approach for Providing Smart Renote Monitoring and Diagnostics for Packaged Air Conditioners and Heat Pumps  

SciTech Connect (OSTI)

This report describes conceptually an approach to providing automated remote performance and conditioning monitoring and fault detection for air conditioners and heat pumps that shows great promise to reduce the capital and installation costs of such systems from over $1000 per unit to $200 to $400 per unit. The approach relies on non-intrusive electric load monitoring (NIELM) to enable separation of the power use signals of compressors and fans in the air conditioner or heat pump. Then combining information on the power uses and one or two air temperature measurements, changes in energy efficiency and occurrence of major faults would be detected. By decreasing the number of sensors used from between ten and twenty in current diagnostic monitoring systems to three for the envisaged system, the capital cost of the monitoring system hardware and the cost of labor for installation would be decreased significantly. After describing the problem being addressed and the concept for performance monitoring and fault detection in more detail, the report identifies specific conditions and faults that the proposed method would detect, discusses specific needs for successful use of the NIELM approach, and identifies the major elements in the path from concept to a commercialized monitoring and diagnostic system.

Brambley, Michael R.

2009-09-01T23:59:59.000Z

123

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

SciTech Connect (OSTI)

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

McNeil, Michael A.; Iyer, Maithili

2009-05-30T23:59:59.000Z

124

Performance characteristics of a turbo expander substituted for expansion valve on air-conditioner  

SciTech Connect (OSTI)

An experimental study is conducted on a small turbo expander which could be applied to the expansion process in place of expansion valves in refrigerator or air-conditioner to improve the cycle efficiency by recovering energy from the throttling process. The operating gas is HFC134a and the maximum cooling capacity of experiment apparatus is 32.7 kW. Four different turbo expanders are tested to find the performance characteristics of the turbo expander when they operate at a low partial admission rate. The partial admission rate is 1.70% or 2.37, and expanders are operated in the supersonic flow. In the experiment, pressure and temperature are measured at 10 different locations in the experimental apparatus. In addition to these measurements, output power at the turbo expander is measured through a generator installed on a rotor shaft with the rotational speed. Performance data of the turbo expander are obtained at many part load operations by adjusting the output power of the generator. A maximum of 15.8% total-to-static efficiency is obtained when the pressure ratio and the partial admission ratio are 2.37 and 1.70%, respectively. Experimental results show that the optimal velocity ratio decreases when the pressure ratio is decreased, and peak efficiencies, which are obtained at locally maximized efficiency depending on the operating condition, vary linearly against the subcooling temperature or the pressure ratio. (author)

Cho, Soo-Yong [Department of Mechanical and Aerospace Engineering (ReCAPT), Gyeongsang National University, 900 Gajoa-dong, Jinju 660-701 (Korea); Cho, Chong-Hyun [School of Mechanical and Aerospace Engineering, Gyeongsang National University, 900 Gajoa-dong, Jinju 660-701 (Korea); Kim, Chaesil [Department of Mechanical Engineering, Changwon National University, 9 Sarim-dong, Changwon 641-773 (Korea)

2008-09-15T23:59:59.000Z

125

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.

126

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

Energy Savers [EERE]

12CO09EV12EV. Today's notice proposes the maximum penalty for selling non-compliant products and requires Air-Con to immediately cease further U.S. sales and provide written...

127

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

E-Print Network [OSTI]

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

Laughman, Christopher Reed.

2008-01-01T23:59:59.000Z

128

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

E-Print Network [OSTI]

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

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

1992-01-01T23:59:59.000Z

129

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

E-Print Network [OSTI]

. For typical residential heat pump and air conditioning #12;systems, they predict a 10 ­ 25 % average energy heat pump condenser coil will foul sufficiently to cause a 20 % reduction in performance over a 4 to 7 is based on a model of heat exchanger fouling that we developed specifically for residential heat

130

E-Print Network 3.0 - ac line conditioners Sample Search Results  

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

AND NEXT GENERATION Summary: ... xvi Adsorption Heat Pumps and Air Conditioners ... xvi Absorption Chillers......

131

E-Print Network 3.0 - array power conditioner Sample Search Results  

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

AND NEXT GENERATION Summary: ... xvi Adsorption Heat Pumps and Air Conditioners ... xvi Absorption Chillers......

132

E-Print Network 3.0 - air conditioner utilizing Sample Search...  

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

51 National Renewable Energy Laboratory (NREL) researchers enhanced this building energy optimization tool to analyze Summary: --when an existing component (e.g., an air...

133

Air conditioning system  

DOE Patents [OSTI]

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

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

2005-02-01T23:59:59.000Z

134

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

E-Print Network [OSTI]

This project was created to address an important issue currently faced by test facilities measuring static pressure for air-conditioning and heat pumps. Specifically, ASHRAE Standard 37, the industry standard for test setup, requires an outlet duct...

Wheeler, Grant Benson

2013-08-12T23:59:59.000Z

135

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

E-Print Network [OSTI]

Perceived air quality increases when relative humidity is decreased till about 30% in the range of comfort temperature. In the present scenario, humidity is considered as a pollutant. Hence, a controlled environment not only at low temperature...

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

2010-01-01T23:59:59.000Z

136

Testing and Economic Evaluation of a High Efficiency 10-ton Rooftop Air Conditioner  

E-Print Network [OSTI]

In 1993, the U.S. Environmental Protection Agency initiated a project to design, build and demonstrate a high efficiency commercial rooftop air conditioning unit. The unit was designed by Hibberd Consulting of Westminster, Colorado, and was built...

O'Neal, D. L.; Davis, M. A.

2006-11-09T23:59:59.000Z

137

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

E-Print Network [OSTI]

. For typical residential heat pump and air conditioning Residential Buildings: Technologies, Design heat pump condenser coil will foul sufficiently to cause a 20 % reduction in performance over a 4 to 7 is based on a model of heat exchanger fouling that we developed specifically for residential heat

Siegel, Jeffrey

138

Improving the Operating Efficiency of Packaged Air Conditioners and Heat Pumps  

SciTech Connect (OSTI)

This article discusses several control strategies that can significantly reduce energy consumption associated with packaged rooftop units RTUs). Although all of the considered strategies are widely used in built-up air-handing units, they are not commonly used in existing RTUs. Both simulation and field evaluations show that adding these control strategies to existing RTUs can reduce their energy consumption by between 30% and 60%.

Katipamula, Srinivas; Wang, Weimin; Vowles, Mira

2014-03-10T23:59:59.000Z

139

2015-02-12 Issuance: Test Procedures for Portable Air Conditioners; Notice  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustionImprovement3 Beryllium-Associated Worker2014 HouseCoveredAirDepartment ofof04of Proposed

140

2015-02-13 Issuance: Energy Conservation Standards for Portable Air Conditioners; Notice of Public Meeting and Availability of the Preliminary Technical Support Document  

Broader source: Energy.gov [DOE]

This document is a pre-publication Federal Register notice of public meeting regarding energy conservation standards for portable air conditioners, as issued by the Deputy Assistant Secretary for Energy Efficiency on February 13, 2015. 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.

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

Analysis on the energy efficiency of variable-frequency air conditioners (Hitachi models as an example) Jim Jr-Min Lin 2014.09.26  

E-Print Network [OSTI]

Analysis on the energy efficiency of variable-frequency air conditioners (Hitachi models (Max) Energy Efficiency @min load Energy Efficiency @Max load kW kW kW kW W/W W/W RAS-22NB 1.00 3.20 0 Efficiency @min load Energy Efficiency @Max load kW kW kW kW W/W W/W RAM-5FNS(B) - 12.5 - 2.91 - 4.3 RAM-6FNS

142

China Energy Efficiency Round Robin Testing Results for Room Air Conditioners  

E-Print Network [OSTI]

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

Zhou, Nan

2010-01-01T23:59:59.000Z

143

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

E-Print Network [OSTI]

its integration. In the DOE’s energy model which was used toSources The energy efficiency simulation model used in thiss Bottom Up Energy Analysis System (BUENAS) model (McNeil et

Shah, Nihar

2014-01-01T23:59:59.000Z

144

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

SciTech Connect (OSTI)

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

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

2012-11-01T23:59:59.000Z

145

Engineering computer models for refrigerators, freezers, furnaces, water heaters, room and central air conditioners  

SciTech Connect (OSTI)

This User's Guide provides the necessary information for understanding and using a computer model developed for the US Department of Energy which predicts the performance (energy consumption) of household refrigerators, refrigerator-freezers, and freezers. The model is capable of simulating various cabinet configurations (top-mount, bottom-mount, side-by-side, single-door) and refrigeration unit combinations (back-mounted static condenser with single forced convection evaporator, hot wall condenser with cooled wall panels, etc.). The program is comprised of two main subroutines: a cabinet heat-load submodel and a refrigeration unit submodel; they can be used separately for preliminary design analysis or together for performance evaluations. A technical description of the model and information on how to structure input parameters are provided. The user is provided with specific guidance for running the model on a computer. Specific instructions are given in the Appendices for changing and running the model using the operating language compatible with the DOE computer terminal system. Other users will have to modify the procedures in these sections as necessary for different computers.

Not Available

1982-11-01T23:59:59.000Z

146

Creating and Implementing a Regularized Monitoring and Enforcement System for China's Mandatory Standards and Energy Information Label for Appliances  

E-Print Network [OSTI]

for 11 products including: refrigerators; air conditioners;on room air-conditioners, which covered products from 29for 11 products including: refrigerators; air conditioners;

Lin, Jiang

2008-01-01T23:59:59.000Z

147

Optimization of Air Conditioning Cycling  

E-Print Network [OSTI]

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

Seshadri, Swarooph

2012-10-19T23:59:59.000Z

148

Proceedings of Healthy Buildings 2009 Paper 474 Impacts of HVAC Filtration on Air-Conditioner Energy Consumption in  

E-Print Network [OSTI]

Proceedings of Healthy Buildings 2009 Paper 474 Impacts of HVAC Filtration on Air efficiency filters (Points A, B, and C, respectively). #12;Proceedings of Healthy Buildings 2009 Paper 474

Siegel, Jeffrey

149

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

E-Print Network [OSTI]

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

Jump, D.A.

2011-01-01T23:59:59.000Z

150

Air heating system  

DOE Patents [OSTI]

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

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

1983-03-01T23:59:59.000Z

151

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

152

Experimental analysis of a window air conditioner with R-22 and zeotropic mixture of R-32/125/134a  

SciTech Connect (OSTI)

This study is the result of the cooperative research and development agreement (CRADA) between Oak Ridge National Laboratory and E.I. Du Pont De Nemours and Company, Inc., (CRADA No. 92-0161) for testing the use of heat exchangers as the evaporator and condenser in an air-conditioning rig. Heat exchangers at typical realistic operating conditions were tested with R-22 and with its potential replacement, a ternary mixture of R-32(30%)/R-125(10%)/R-134a(60%). A test rig was built that provided for operation of the low-temperature exchanger (evaporator) with flooded coils. The test results indicated that the performance of the evaporator heat exchanger using ternary mixture, in terms of cooling capacity, would be around 7.4% less than the performance using R-22. The cooling capacity for both refrigerants improved with flooded evaporator operation by 8.6% for R-22 and by 15% for ternary mixture. Compared with R-22 operation, operation with ternary mixture results in slightly higher compressor discharge pressure, lower compressor discharge temperature, slightly lower compressor power consumption, and a higher compressor high-low pressure ratio. Temperature glide for ternary mixture, for both evaporator and condenser, was clearly evident, but not as pronounced as expected because of the pressure drop (and thus the temperature drop) along the coils. Further improvement of the performance of ternary mixture is possible if the evaporator is arranged in a counter-cross-flow configuration to take advantage of the temperature glide. Current evaporator designs are mostly concurrent-cross-flow, which is more appropriate for single-component refrigerants or azeotropic refrigerant mixtures.

Mei, V.C.; Chen, F.C.; Carlstedt, J.; Hallden, D.

1995-08-01T23:59:59.000Z

153

CONTROL SYSTEM FOR SOLAR HEATING and COOLING  

E-Print Network [OSTI]

~O"')4 REFERENCES The air conditioner work is the subject ofAmmonia-Water Absorption Air Conditioner", by M. Simmons, R.water absorption air conditioner, (1) and the establishment

Dols, C.

2010-01-01T23:59:59.000Z

154

Ventilation Air Preconditioning Systems  

E-Print Network [OSTI]

capacity. Optional Morning Warm-up If connected to a liquid condenser bundle, the icemaking chiller can serve as a heat recovery heat pump. The chiller can freeze ice in the early morning to provide heat for morning warm-up, and use the ice... the cooling coil or drain pan re-evaporates and is delivered to occupied space during compressor off-cycles. Although heat recovery between the exhaust air and ventilation air can reduce the impact on the HVAC system, many buildings do not have central...

Khattar, M.; Brandemuehl, M. J.

1996-01-01T23:59:59.000Z

155

13 EER Window Air Conditioner  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up from theDepartment( Sample of Shipment Notice)1021STATE ENERGY PROGRAM

156

Air Observe System  

E-Print Network [OSTI]

This manuscript contains a description and basic principles for observing inaccessible areas using low cost, easily deployed equipment. The basic premise is to suspend a tiny video camera at an altitude of 10 - 200 meters over the area to be surveyed. The TV camera supports at altitude by wind or balloon. The technical challenges regard the means by which the camera is suspended. Such a system may be used by military or police forces or by civil authorities for rescue missions or assessment of natural disasters. The method may be further developed for military applications by integrating the surveillance task with deployment of munitions. Key words: air observer, air suspended system, low altitude video observer.

Alexander Bolonkin

2007-01-10T23:59:59.000Z

157

Fundamentals of Compressed Air Systems  

Broader source: Energy.gov [DOE]

Find out how a compressed air system works and the benefits of optimal compressed air system performance. This initial class demonstrates how to compute the current cost of your plant's compressed...

158

Compressed Air Energy Storage System  

E-Print Network [OSTI]

/expanders are crucial for the economical viability of a Compressed Air Energy Storage (CAES) system such as the

Farzad A. Shirazi; Mohsen Saadat; Bo Yan; Perry Y. Li; Terry W. Simon

159

E-Print Network 3.0 - air-cooled water chillers Sample Search...  

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

and centrifugal chillers... ... xvi Adsorption Heat Pumps and Air Conditioners ... xvi Absorption Chillers......

160

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]

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

McNeil, Michael A.; Letschert, Virginie E.

2008-01-01T23:59:59.000Z

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

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]

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

McNeil, Michael A.; Letschert, Virginie E.

2008-01-01T23:59:59.000Z

162

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

SciTech Connect (OSTI)

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

Not Available

1993-11-01T23:59:59.000Z

163

Advanced Thin Film Thermoelectric Systems forEfficient Air-Conditioner...  

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

& Publications Sheetak will work on developing a full scale prototype of its low cost heat pump water heater. These solid state heat pumping elements can be implemented in low...

164

Advanced Thin Film Thermoelectric Systems forEfficient Air-Conditioners |  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartment of EnergyAdministrative2| DepartmentEnergy 2Waste Heat at GM

165

Compressed Air System Optimization  

E-Print Network [OSTI]

Several years ago I went to a gas station and noticed that my car's tires were low on air. I saw the gas station had an air compressor, but it cost a quarter to use the compressor. I paid my quarter and used the compressor. I realized...

Aegerter, R.

166

Single-Duct Constant Air Volume System Supply Air Temperature Reset: Using Return Air Temperature or Outside Air Temperature?  

E-Print Network [OSTI]

The supply air temperature set point for a singleduct constant air volume air handling unit (AHU) system is often reset based on either return air temperature or outside air temperature in order to reduce simultaneous cooling and heating energy...

Wei, G.; Turner, W. D.; Claridge, D.; Liu, M.

2002-01-01T23:59:59.000Z

167

Air ejector augmented compressed air energy storage system  

DOE Patents [OSTI]

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

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

1980-01-01T23:59:59.000Z

168

Attenuator And Conditioner  

DOE Patents [OSTI]

An apparatus and method of attenuating and/or conditioning optical energy for an optical transmitter, receiver or transceiver module is disclosed. An apparatus for attenuating the optical output of an optoelectronic connector including: a mounting surface; an array of optoelectronic devices having at least a first end; an array of optical elements having at least a first end; the first end of the array of optical elements optically aligned with the first end of the array of optoelectronic devices; an optical path extending from the first end of the array of optoelectronic devices and ending at a second end of the array of optical elements; and an attenuator in the optical path for attenuating the optical energy emitted from the array of optoelectronic devices. Alternatively, a conditioner may be adapted in the optical path for conditioning the optical energy emitted from the array of optoelectronic devices.

Anderson, Gene R. (Albuquerque, NM); Armendariz, Marcelino G. (Albuquerque, NM); Carson, Richard F. (Albuquerque, NM); Bryan, Robert P. (Albuquerque, NM); Duckett, III, Edwin B. (Albuquerque, NM); Kemme, Shanalyn Adair (Albuquerque, NM); McCormick, Frederick B. (Albuquerque, NM); Peterson, David W. (Sandia Park, NM)

2006-04-04T23:59:59.000Z

169

Air distribution effectiveness with stratified air distribution systems  

E-Print Network [OSTI]

1 Air distribution effectiveness with stratified air distribution systems Kisup Lee* Zheng Jiang, Ph.D Qingyan Chen, Ph.D. Student Member ASHRAE Fellow ASHRAE ABSTRACT Stratified air distribution systems such as Traditional Displacement Ventilation (TDV) and Under- Floor Air Distribution (UFAD

Chen, Qingyan "Yan"

170

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

SciTech Connect (OSTI)

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

Not Available

2013-06-01T23:59:59.000Z

171

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

172

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

173

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

SciTech Connect (OSTI)

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

None

2010-09-01T23:59:59.000Z

174

7Name ________________________________ System Watts Energy source  

E-Print Network [OSTI]

, which will do work to move air in your air conditioner, or to keep food cold in your refrigerator. When

175

Magnus air turbine system  

DOE Patents [OSTI]

A Magnus effect windmill for generating electrical power is disclosed. A large nacelle-hub mounted pivotally (in Azimuth) atop a support tower carries, in the example disclosed, three elongated barrels arranged in a vertical plane and extending symmetrically radially outwardly from the nacelle. The system provides spin energy to the barrels by internal mechanical coupling in the proper sense to cause, in reaction to an incident wind, a rotational torque of a predetermined sense on the hub. The rotating hub carries a set of power take-off rollers which ride on a stationary circular track in the nacelle. Shafts carry the power, given to the rollers by the wind driven hub, to a central collector or accumulator gear assembly whose output is divided to drive the spin mechanism for the Magnus barrels and the main electric generator. A planetary gear assembly is interposed between the collector gears and the spin mechanism functioning as a differential which is also connected to an auxiliary electric motor whereby power to the spin mechanism may selectively be provided by the motor. Generally, the motor provides initial spin to the barrels for start-up after which the motor is braked and the spin mechanism is driven as though by a fixed ratio coupling from the rotor hub. During high wind or other unusual conditions, the auxiliary motor may be unbraked and excess spin power may be used to operate the motor as a generator of additional electrical output. Interposed between the collector gears of the rotating hub and the main electric generator is a novel variable speed drive-fly wheel system which is driven by the variable speed of the wind driven rotor and which, in turn, drives the main electric generator at constant angular speed. Reference is made to the complete specification for disclosure of other novel aspects of the system such as, for example, the aerodynamic and structural aspects of the novel Magnus barrels as well as novel gearing and other power coupling combination apparatus of the invention. A reading of the complete specification is recommended for a full understanding of the principles and features of the disclosed system.

Hanson, Thomas F. (24204 Heritage La., Newhall, CA 91321)

1982-01-01T23:59:59.000Z

176

Advanced Management of Compressed Air Systems  

Office of Energy Efficiency and Renewable Energy (EERE)

Find out how a compressed air system works and the benefits of optimal compressed air system performance. This training is designed to help end users as well as industry solution providers learn...

177

Development of slotted orifice flow conditioner  

E-Print Network [OSTI]

concentric rings of radial slots. The porosity of each ring varied so that the conditioner generated a six step parabolic profile similar to the profile tested with Fluent The overall porosity of the parabolic conditioner was 25. 1'/o, which is lower than... 19 Velocity Profile Procedure . Co Measurement Procedure Data Reduction . . . . . . 19 21 22 RESULTS 24 LDA Velocity Profile and Turbulence Intensity Analysis 24 Tube Bundle, Uniform Slotted Orifice Flow Conditioner . . Parabolic Slotted...

Ihfe, Larry Michael

1994-01-01T23:59:59.000Z

178

Strategy Guideline: Compact Air Distribution Systems  

SciTech Connect (OSTI)

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

Burdick, A.

2013-06-01T23:59:59.000Z

179

Compressed air energy storage system  

DOE Patents [OSTI]

An internal combustion reciprocating engine is operable as a compressor during slack demand periods utilizing excess power from a power grid to charge air into an air storage reservoir and as an expander during peak demand periods to feed power into the power grid utilizing air obtained from the air storage reservoir together with combustible fuel. Preferably the internal combustion reciprocating engine is operated at high pressure and a low pressure turbine and compressor are also employed for air compression and power generation.

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

1981-01-01T23:59:59.000Z

180

THE PREV AIR SYSTEM, AN OPERATIONAL SYSTEM FOR LARGE SCALE AIR QUALITY FORECASTS OVER EUROPE; APPLICATIONS  

E-Print Network [OSTI]

THE PREV AIR SYSTEM, AN OPERATIONAL SYSTEM FOR LARGE SCALE AIR QUALITY FORECASTS OVER EUROPE Author ABSTRACT Since Summer 2003, the PREV'AIR system has been delivering through the Internet1 daily air quality forecasts over Europe. This is the visible part of a wider collaborative project

Paris-Sud XI, Université de

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

Industrial Compressed Air System Energy Efficiency Guidebook.  

SciTech Connect (OSTI)

Energy efficient design, operation and maintenance of compressed air systems in industrial plants can provide substantial reductions in electric power and other operational costs. This guidebook will help identify cost effective, energy efficiency opportunities in compressed air system design, re-design, operation and maintenance. The guidebook provides: (1) a broad overview of industrial compressed air systems, (2) methods for estimating compressed air consumption and projected air savings, (3) a description of applicable, generic energy conservation measures, and, (4) a review of some compressed air system demonstration projects that have taken place over the last two years. The primary audience for this guidebook includes plant maintenance supervisors, plant engineers, plant managers and others interested in energy management of industrial compressed air systems.

United States. Bonneville Power Administration.

1993-12-01T23:59:59.000Z

182

Low-noise pulse conditioner  

DOE Patents [OSTI]

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

Bird, David A. (Oak Ridge, TN)

1983-01-01T23:59:59.000Z

183

EVALUATION OF A NEW SOLAR AIR CONDITIONER  

E-Print Network [OSTI]

· Benefits to California · Overall Technology Assessment · Appendices o Appendix A: Final Report (under-16 Grant Funding: $74,547 Term: February 2001 ­ June 2003 PIER Subject Area: Renewable Energy Technologies/Agricultural/Water End-Use Energy Efficiency · Renewable Energy Technologies · Environmentally-Preferred Advanced

184

Room Air Conditioners | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy UsageAUDITVehicles »ExchangeDepartmentResolve to Save Energy This Year|Rooftop

185

Tips: Air Conditioners | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmittedStatusButler Tina Butler Tina-Butler.jpg Tina L.

186

Room Air Conditioners | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartment of Energy fromCommentsRevolving Loan Funds Revolving LoanA l iSoftRTU Suite

187

DOE Investigates Possible Air Conditioner Efficiency Violations |  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists'Montana. DOCUMENTSof Energy DOE ChallengeThese(Notice of Proposed

188

Making Compressed Air System Decisions  

E-Print Network [OSTI]

spawned an entire industry dedicated to manufacturing equipment designed to remove moisture, lubricant, particulate and vapor contaminants from compressed air. Purification equipment, such as air dryers and filters, are used alone or in combination... to reduce the amount of contaminants in the compressed air to the desired purity. All compressed ESL-IE-96-04-32 Proceedings from the Eighteenth Industrial Energy Technology Conference, Houston, TX, April 17-18, 1996 air purification equipment requires...

Porri, R. E.

189

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

E-Print Network [OSTI]

Efficiency and Renewable Energy, Building Technologiesand Renewable Energy, Office of Building Technology, State,

Yu, Bingyi

2013-01-01T23:59:59.000Z

190

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]

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

McNeil, Michael A.; Letschert, Virginie E.

2008-01-01T23:59:59.000Z

191

Alternatives to Electric Air Conditioning Systems  

E-Print Network [OSTI]

, and exposed to a purge air stream to remove the moisture. The drier air eliminates the need for low evaporator temperatures, allowing the compressor to operate more efficiently, providing only sensible cooling. The synergy of the desiccant/engine chiller... during the summer, including solar gain and high ambient temperatures, the air conditioning system must also handle the heat generated by lighting, personnel, and office equipment. These internal loads dominate in large buildings, especially where...

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

1988-01-01T23:59:59.000Z

192

Energy Efficiency in Compressed Air Systems  

E-Print Network [OSTI]

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

Hingorani, A.; Pavlov, A.

2010-01-01T23:59:59.000Z

193

Advanced Controls for Industrial Compressed Air Systems  

E-Print Network [OSTI]

at a Goulds Pumps manufacturing plant in Seneca Falls, New York, and is currently undergoing field testing. The compressed air system will optimize the energy efficiency of the 7 compressor system (1,850hp) at Goulds, while reducing system pressure...

Vold, P.; Gabel, S.; Carmichael, L.; Curtner, K.; Cirillo, N. C. Jr.

194

Compressed Air Systems Audits - Why? And How?  

E-Print Network [OSTI]

% of the compressed air costs, most with little or no capital investment. Almost always, in the event of a capital outlay, energy savings alone afford less than one-year payback. Many energy utility companies energetically support these efforts, and some.... Secondly, join us in the definition of compressed air as a system, the totality of which is comprised of the Supply Side and the Demand Side. The Supply Side is the compressors and their controls, receivers (primary storage tanks), aftercoolers, filters...

Kemp, H. L.

2004-01-01T23:59:59.000Z

195

Improving Energy Efficiency of Compressed Air System Based on System Audit  

E-Print Network [OSTI]

50 compressed air system energy audits completed by Shanghai50 compressed air system energy audits completed by Shanghaiof compressed air energy audits conducted by the Shanghai

Shanghai, Hongbo Qin; McKane, Aimee

2008-01-01T23:59:59.000Z

196

Topic 4: Demand Response A.H. MohsenianRad (U of T) 1Networking and Distributed Systems  

E-Print Network [OSTI]

: · The utility has remote access to certain load of users · Air conditioner · Water heater. · It remotely turns installed DLC switches on air conditioner #12;DLC Example Dr. Hamed Mohsenian-Rad Texas Tech University

Mohsenian-Rad, Hamed

197

Fuel Cell Systems Air Management  

E-Print Network [OSTI]

Targets Compressor/Expander for Transportation Fuel Cell System 400--$Cost 10-1510-155Turndown Ratio 15 compressor/expander units for direct hydrogen systems. · Need exists for compressor/ expander motor unit hydrogen 500020001000HoursDurability 45125325$/kWCost 325250140W/LPower density Operating on Tier 2

198

Fault Tolerant Oxygen Control of a Diesel Engine Air System  

E-Print Network [OSTI]

Fault Tolerant Oxygen Control of a Diesel Engine Air System Rainer Nitsche Matthias Bitzer control problem of a Diesel engine air system having a jammed Exhaust Gas Recirculation (EGR) valve of the air system. Keywords: Fault tolerant control, Diesel engine, Air system, Model-based trajectory

Paris-Sud XI, Université de

199

Tips: Air Ducts | Department of Energy  

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

the walls, floors, and ceilings; it carries the air from your home's furnace and central air conditioner to each room. Ducts are made of sheet metal, fiberglass, or other...

200

Secondary air injection system and method  

DOE Patents [OSTI]

According to one embodiment of the invention, a secondary air injection system includes a first conduit in fluid communication with at least one first exhaust passage of the internal combustion engine and a second conduit in fluid communication with at least one second exhaust passage of the internal combustion engine, wherein the at least one first and second exhaust passages are in fluid communication with a turbocharger. The system also includes an air supply in fluid communication with the first and second conduits and a flow control device that controls fluid communication between the air supply and the first conduit and the second conduit and thereby controls fluid communication to the first and second exhaust passages of the internal combustion engine.

Wu, Ko-Jen; Walter, Darrell J.

2014-08-19T23:59:59.000Z

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

air bag system: Topics by E-print Network  

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

an advanced gas engine... Lindsay, B. B.; Koplow, M. D. 1988-01-01 46 Compressed Air Energy Savings: SAV-AIR Monitor and Control System and the PNW Compressed Air Challenge...

202

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

E-Print Network [OSTI]

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

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

2006-01-01T23:59:59.000Z

203

VOL.0, NO. 0, SEPTEMBER 2011 --PROCEEDINGS OF THE IEEE 1 A Cyber-Physical Systems Approach to Data Center  

E-Print Network [OSTI]

conditioners (CRACs), chillers, and cooling towers, generate and deliver the cooling capacity to the IT systems

204

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

E-Print Network [OSTI]

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

Wang, J.; Yan, Z.

2006-01-01T23:59:59.000Z

205

2014-03-06 Issuance: Test Procedures for Packaged Terminal Air...  

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

Issuance: Test Procedures for Packaged Terminal Air Conditioners and Packaged Terminal Heat Pumps; Notice of Proposed Rulemaking 2014-03-06 Issuance: Test Procedures for...

206

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

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

Minimum Appliance Standards DOE Requires Manufacturers to Halt Sales of Heat Pumps and Air Conditioners Violating Minimum Appliance Standards June 3, 2010 - 2:17pm Addthis...

207

HEDL air filter examination system software  

SciTech Connect (OSTI)

This document describes the system software and operation of the Hanford Engineering Development Laboratory (HEDL) air filter sample counting systems. Included are a description of how each program functions with flow charts, sample printouts, program listings and a listing with comments of test routines that exercise the hardware. This effort is a result of a work order from HEDL Operational Safety to the Instrument Calibration and Evaluations section of the Pacific Northwest Laboratory (PNL) to upgrade the HEDL counting systems to include standardization, radon subtraction, and detector cooling.

Stapleton, E.E.

1984-10-01T23:59:59.000Z

208

air suspension system: Topics by E-print Network  

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

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

209

air suspension systems: Topics by E-print Network  

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

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

210

Solving an Air Conditioning System Problem using Constraint Satisfaction  

E-Print Network [OSTI]

Solving an Air Conditioning System Problem using Constraint Satisfaction Raphaël Chenouard1 An air conditioning system problem 1.1 Context The design process is a sequence of phases ranging from States (2007)" DOI : 10.1007/978-3-540-74970-7_4 #12;In this paper, an air conditioning system (ACS

Paris-Sud XI, Université de

211

Solar air heating system for combined DHW and space heating  

E-Print Network [OSTI]

Solar air heating system for combined DHW and space heating solar air collector PV-panel fannon-return valve DHW tank mantle cold waterhot water roof Solar Energy Centre Denmark Danish Technological Institute SEC-R-29 #12;Solar air heating system for combined DHW and space heating Søren �stergaard Jensen

212

air cooling system: Topics by E-print Network  

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

coil unit (FCU) and 100% fresh air are used... Mohamed, E.; Abdalla, K. N. 2010-01-01 8 Cold side thermal energy storage system for improved operation of air cooled power plants...

213

air cooling systems: Topics by E-print Network  

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

coil unit (FCU) and 100% fresh air are used... Mohamed, E.; Abdalla, K. N. 2010-01-01 8 Cold side thermal energy storage system for improved operation of air cooled power plants...

214

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

215

Burner Designs and Controls for Variable Air Preheat Systems  

E-Print Network [OSTI]

and batch type melting operations resulting in cyclic or variable air preheat temperatures will be discussed. Fuel savings relating to the use of recuperation and various types of fuel/air ratio systems will also be discussed....

Lied, C. R.

1981-01-01T23:59:59.000Z

216

Operation technology of air treatment system in nuclear facilities  

E-Print Network [OSTI]

Effective operation techniques were reviewed on the air treatment system to protect the personnel in nuclear facilities from the contamination of radio-active particles and to keep the environment clear. Nuclear air treatment system consisted of the ventilation and filtering system was characterized by some test. Measurement of air velocity of blowing/exhaust fan in the ventilation system, leak tests of HEPA filters in the filtering, and measurement of pressure difference between the areas defined by radiation level were conducted. The results acquired form the measurements were reflected directly for the operation of air treatment. In the abnormal state of virus parts of devices composted of the system, the repairing method, maintenance and performance test were also employed in operating effectively the air treatment system. These measuring results and techniques can be available to the operation of air treatment system of PIEF as well as the other nuclear facilities in KAERI.

Chun, Y B; Hwong, Y H; Lee, H K; Min, D K; Park, K J; Uom, S H; Yang, S Y

2001-01-01T23:59:59.000Z

217

Closed-loop air cooling system for a turbine engine  

DOE Patents [OSTI]

Method and apparatus are disclosed for providing a closed-loop air cooling system for a turbine engine. The method and apparatus provide for bleeding pressurized air from a gas turbine engine compressor for use in cooling the turbine components. The compressed air is cascaded through the various stages of the turbine. At each stage a portion of the compressed air is returned to the compressor where useful work is recovered.

North, William Edward (Winter Springs, FL)

2000-01-01T23:59:59.000Z

218

AN OPTIMIZED TWO-CAPACITY ADVANCED ELECTRIC HEAT PUMP S. E. Veyo, Manager, Heat Exchange Systems Research  

E-Print Network [OSTI]

#12;AN OPTIMIZED TWO-CAPACITY ADVANCED ELECTRIC HEAT PUMP S. E. Veyo S. E. Veyo, Manager, Heat Exchange Systems Research Westinghouse Electric Corporation, R&D Center 1310 Beulah Road Pittsburgh, PA 15235 KEYWORDS: heat pump, air conditioner, electric, residential, energy, compressor, fan, blower, heat

Oak Ridge National Laboratory

219

Energy efficiency improvements in Chinese compressed air systems  

E-Print Network [OSTI]

Air Systems, Paper #071 Energy efficiency improvements into increase industrial energy efficiency. As a result, morein use. Over time, energy efficiency decreases and the cost

McKane, Aimee; Li, Li; Li, Yuqi; Taranto, T.

2008-01-01T23:59:59.000Z

220

air conditioning system: Topics by E-print Network  

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

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

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

air conditioning systems: Topics by E-print Network  

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

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

222

Cooperative Control of Air Flow for HVAC Systems  

E-Print Network [OSTI]

in a variable air volume HVAC system,” Energy, vol. 21, no.Global optimization for overall HVAC systems-part I problemGlobal optimization for overall HVAC systems-part II problem

Shuai, Liu; Lihua, Xie

2013-01-01T23:59:59.000Z

223

Identifying Efficiency Degrading Faults in Split Air Conditioning Systems  

E-Print Network [OSTI]

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

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

2013-01-01T23:59:59.000Z

224

Energy performance of underfloor air distribution systems  

E-Print Network [OSTI]

Underfloor Air Distribution (UFAD) Design Guide.  Atlanta: distribution, UFAD, EnergyPlus, EnergyPlus/UFAD, energy  modeling, design design calculations must account for the distribution of 

Bauman, Fred; Webster, Tom; Linden, Paul; Buhl, Fred

2007-01-01T23:59:59.000Z

225

Ventilation System Effectiveness and Tested Indoor Air Quality Impacts  

SciTech Connect (OSTI)

Ventilation system effectiveness testing was conducted at two unoccupied, single-family, detached lab homes at the University of Texas - Tyler. Five ventilation system tests were conducted with various whole-building ventilation systems. Multizone fan pressurization testing characterized building and zone enclosure leakage. PFT testing showed multizone air change rates and interzonal airflow. Cumulative particle counts for six particle sizes, and formaldehyde and other Top 20 VOC concentrations were measured in multiple zones. The testing showed that single-point exhaust ventilation was inferior as a whole-house ventilation strategy. It was inferior because the source of outside air was not direct from outside, the ventilation air was not distributed, and no provision existed for air filtration. Indoor air recirculation by a central air distribution system can help improve the exhaust ventilation system by way of air mixing and filtration. In contrast, the supply and balanced ventilation systems showed that there is a significant benefit to drawing outside air from a known outside location, and filtering and distributing that air. Compared to the Exhaust systems, the CFIS and ERV systems showed better ventilation air distribution and lower concentrations of particulates, formaldehyde and other VOCs. System improvement percentages were estimated based on four System Factor Categories: Balance, Distribution, Outside Air Source, and Recirculation Filtration. Recommended System Factors could be applied to reduce ventilation fan airflow rates relative to ASHRAE Standard 62.2 to save energy and reduce moisture control risk in humid climates. HVAC energy savings were predicted to be 8-10%, or $50-$75/year.

Rudd, A.; Bergey, D.

2014-02-01T23:59:59.000Z

226

Air conditioning system with supplemental ice storing and cooling capacity  

DOE Patents [OSTI]

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

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

1998-01-01T23:59:59.000Z

227

Conserve Energy by Optimizing Air Compressor System  

E-Print Network [OSTI]

is the compressed air plant(s), cating air compressors with one 60-hp and one 30-hp which many times include compressors, ancillary screw compressor; (2) the repiping of the existing equipment, and/or an operating sequence that is screw compressors cooling water...

Williams, V. A.

228

Major: Ecological Systems Design, Air Quality Control and Waste Management  

E-Print Network [OSTI]

1 Major: Ecological Systems Design, Air Quality Control and Waste Management · Being able to solve control technologies · Knowledge in waste management and technologies Module 1: Ecological Systems Design quality control and biogas Waste management and air quality control Examples for combination of Modules

Giger, Christine

229

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

E-Print Network [OSTI]

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

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

2012-01-01T23:59:59.000Z

230

An Integrated Air Handling Unit System for Large Commercial Buildings  

E-Print Network [OSTI]

are developed to compare the energy performance and indoor air quality between the OAHU and conventional AHU systems (single AHU). The OAHU uses significantly less energy than the conventional system in both winter and summer. The OAHU also provides better...

Song, L.; Liu, M.

2001-01-01T23:59:59.000Z

231

Innovative Systems for Solar Air Conditioning of Buildings  

E-Print Network [OSTI]

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

Kessling, W.; Peltzer, M.

2004-01-01T23:59:59.000Z

232

air defense system: Topics by E-print Network  

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

system. Much is now known about the post-September Wang, Hai 377 Numerical Analysis of Heat and Moisture Transfer in Underground Air-conditioning Systems Texas A&M University -...

233

air defense systems: Topics by E-print Network  

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

system. Much is now known about the post-September Wang, Hai 377 Numerical Analysis of Heat and Moisture Transfer in Underground Air-conditioning Systems Texas A&M University -...

234

Efficiency of compressed-air systems. Final report  

SciTech Connect (OSTI)

The program undertaken by this contract is intended to quantify the current state of knowledge in American industry concerning the energy efficient design and operation of industrial compressed air systems and system components. Since there is no standard reference for designers and operators of compressed air systems which provides guidelines for maximizing the energy efficiency of these systems, a major product of this contract was the preparation of a guidebook for this purpose.

Not Available

1983-01-01T23:59:59.000Z

235

Understanding the Basics of Compressed Air Systems  

E-Print Network [OSTI]

, contaminated filters, conversion to electrically operated hoists, and the use of centrifugal fans or compressed air with pressure regulators to purge control cabinets. Finally, a review of compressor technologies with typical cfm, pressure ranges, and price...

Herron, D. J.

236

System Transition: Dynamics of Change in the US Air TransportationSystem  

E-Print Network [OSTI]

System Transition: Dynamics of Change in the US Air TransportationSystem by Aleksandra L Education Committee #12;#12;System Transition: Dynamics of Change in the US Air Transportation System of the requirements for the degree of Doctor of Philosophy in Technology, Management, and Policy Abstract The US Air

de Weck, Olivier L.

237

The Air or Brayton Cycle Solvent Recovery System  

E-Print Network [OSTI]

reduction of the turbine exhaust air temperature. In this manner the system will boot strap itself down to a very low temperature in just a few minutes. I have observed the 8000 CFM system, which will be described a little later, cool from an ambient... condens~ng temperature for many solvents is colder than -50 F. Such low temperatures require relatively complicated freon refri geration systems. This led to development of the Air Cycle System. Fig. 3 shows a simple schematic of the air cycle. A...

Fox, B. J.

238

Position paper -- Tank ventilation system design air flow rates  

SciTech Connect (OSTI)

The purpose of this paper is to document a project position on required ventilation system design air flow rates for the waste storage tanks currently being designed by project W-236A, the Multi-Function Waste Tank Facility (MWTF). The Title 1 design primary tank heat removal system consists of two systems: a primary tank vapor space ventilation system; and an annulus ventilation system. At the conclusion of Title 1 design, air flow rates for the primary and annulus ventilation systems were 960 scfm and 4,400 scfm, respectively, per tank. These design flow rates were capable of removing 1,250,000 Btu/hr from each tank. However, recently completed and ongoing studies have resulted in a design change to reduce the extreme case heat load to 700,000 Btu/hr. This revision of the extreme case heat load, coupled with results of scale model evaporative testing performed by WHC Thermal Hydraulics, allow for a reduction of the design air flow rates for both primary and annulus ventilation systems. Based on the preceding discussion, ICF Kaiser Hanford Co. concludes that the design should incorporate the following design air flow rates: Primary ventilation system--500 scfm maximum and Annulus ventilation system--1,100 scfm maximum. In addition, the minimum air flow rates in the primary and annulus ventilation systems will be investigated during Title 2 design. The results of the Title 2 investigation will determine the range of available temperature control using variable air flows to both ventilation systems.

Goolsby, G.K.

1995-01-04T23:59:59.000Z

239

Air Pollution Accountability and Compliance Tracking System (A-PACT System)  

E-Print Network [OSTI]

regulatory authorities in making their decisions. (Abstract) Keywords-air pollution; aviation; data mining IAir Pollution Accountability and Compliance Tracking System (A-PACT System) Andrew Keller and emissions regulations for aircraft at major airports. The proposed Air Pollution Accountability

240

Scalability of the air transportation system and development of multi-airport systems : a worldwide perspective  

E-Print Network [OSTI]

With the growing demand for air transportation and the limited ability to increase capacity at some key points in the air transportation system, there are concerns that in the future the system will not scale to meet demand. ...

Bonnefoy, Philippe A

2008-01-01T23:59:59.000Z

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

Scalability of the Air Transportation System and Development of Multi-Airport Systems: A Worldwide Perspective  

E-Print Network [OSTI]

With the growing demand for air transportation and the limited ability to increase capacity at some key points in the air transportation system, there are concerns that in the future the system will not scale to meet demand. ...

Bonnefoy, Philippe

242

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

SciTech Connect (OSTI)

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

Henry DeLima; Joe Akin; Joseph Pietsch

2008-09-14T23:59:59.000Z

243

A Wireless Sensor Network Air Pollution Monitoring System  

E-Print Network [OSTI]

Sensor networks are currently an active research area mainly due to the potential of their applications. In this paper we investigate the use of Wireless Sensor Networks (WSN) for air pollution monitoring in Mauritius. With the fast growing industrial activities on the island, the problem of air pollution is becoming a major concern for the health of the population. We proposed an innovative system named Wireless Sensor Network Air Pollution Monitoring System (WAPMS) to monitor air pollution in Mauritius through the use of wireless sensors deployed in huge numbers around the island. The proposed system makes use of an Air Quality Index (AQI) which is presently not available in Mauritius. In order to improve the efficiency of WAPMS, we have designed and implemented a new data aggregation algorithm named Recursive Converging Quartiles (RCQ). The algorithm is used to merge data to eliminate duplicates, filter out invalid readings and summarise them into a simpler form which significantly reduce the amount of dat...

Khedo, Kavi K; Mungur, Avinash; Mauritius, University of; Mauritius,; 10.5121/ijwmn.2010.2203

2010-01-01T23:59:59.000Z

244

Implementation of the Laboratory Air Handling Unit Systems (LAHU)  

E-Print Network [OSTI]

Implementation of the Laboratory Air Handling Unit Systems (LAHU) Y. Cui Graduate Student Energy Systems Laboratory University of Nebraska-Lincoln Omaha, NE, USA M. Liu, Ph.D., P.E. Associate Professor Energy Systems Laboratory...-around coils [18, 19], the variable air volume (VAV) fume hoods [8-16] and the usage-based control devices (UBC) [17]. These measures have effectively reduced the cooling energy, preheat energy and fan power consumption, and sometime, improved indoor...

Cui, Y.; Liu, M.; Conger, K.

2003-01-01T23:59:59.000Z

245

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

SciTech Connect (OSTI)

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

Not Available

2013-05-01T23:59:59.000Z

246

Determining benefits and costs of improved central air conditioner efficiencies  

E-Print Network [OSTI]

Engineers, Inc. , Energy Efficient Design of New BuildingsStandard 90.1, Energy Efficient Design of New Buildings

Rosenquist, G.

2010-01-01T23:59:59.000Z

247

Determining benefits and costs of improved central air conditioner efficiencies  

E-Print Network [OSTI]

of Energy-Energy Information Administration, A Look atof Energy-Energy Information Administration, 1995 Commercialof Energy-Energy Information Administration, Annual Energy

Rosenquist, G.

2010-01-01T23:59:59.000Z

248

Development of a room air conditioner design model  

E-Print Network [OSTI]

AND RECOMMENDATIONS. Page . 12 . 12 . 20 . 33 . 38 . 48 . 50 . 56 Conclusions. Recommendations. REFERENCES APPENDIX A . 57 . 57 . 59 . 61 VITA . 66 LZST OP TABLES Table Page 2. 1 Major output parameters from the ORNL model 3. 1 Effect of tube.... Efficiency improvements are evaluated with the aid of a computer model. The model chosen for this analysis was the Oak Ridge National Laboratory (ORNL) heat pump model [5] . The ORNL Heat Pump Design Model is a FORTRAN computer program developed...

Penson, Steven Brad

1988-01-01T23:59:59.000Z

249

Ductless Mini-Split Air Conditioners | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy UsageAUDITVehicles » AlternativeUpDrain-Water Heat Recovery Drain-Water

250

Four Central Air Conditioners Determined Noncompliant With Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeat PumpRecordFederal7.pdfFlash_2010_-24.pdfOverviewPlansBuildings andEfficiency

251

Commercial Air Conditioners and Heat Pumps | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartmentTieCelebrate Earth Codesthe Natural Resources Defenseon

252

List of Central Air conditioners Incentives | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat JumpInc Place:KeystoneSolar (Texas) JumpEventBoilersCeiling FanCentral

253

List of Room Air Conditioners Incentives | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat JumpInc Place:KeystoneSolarList ofPassive SolarRoofs Incentives Jump

254

High-Efficiency Window Air Conditioners - Building America Top Innovation |  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists'Montana.ProgramJulietip sheetK-4In 2013 many| Department HIGH

255

Variable Speed Fan Retrofits for Computer Room Air Conditioners |  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomen Owned SmallOf The 2012Nuclear Guide Remote55 Jefferson Ave. Valley ForgeValue

256

Determining benefits and costs of improved central air conditioner efficiencies  

E-Print Network [OSTI]

Administration, Annual Energy Outlook 2000, December, 1999.trends from EIA's Annual Energy Outlook 2000 (AE02000) were

Rosenquist, G.

2010-01-01T23:59:59.000Z

257

Electrolux Gibson Air Conditioner and Equator Clothes Washer Fail DOE  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists'Montana.Program - LibbyofThisStatementNOTElectricity Transmissionof EnergyEnergy

258

Enforcement Policy Statement: Off Mode Standards for Central Air Conditioners  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists'Montana.Program -Department oftoTheseClickDepartment of Energy June

259

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

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth'sOklahoma/GeothermalOrangePeru:JobInformation MccoyPrimusProEcoProcana

260

13-Energy Efficiency Ratio Window Air Conditioner | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in Review: Top Five EERE Blog Posts of 2014 Year in Review:Summer-0 ResourcesEnergy

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

Covered Product Category: Residential Central Air Conditioners | Department  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in Review: Top FiveDepartmentfor EngineeringDepartment ofBoilersDataHotof Energy Central

262

Variable Speed Fan Retrofits for Computer Room Air Conditioners  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage »of EnergyTheTwoVulnerabilities | Department of|VTA,anCompression

263

Improving Compressed Air System Efficiency- Know What You Really Need  

E-Print Network [OSTI]

($17,000/year saved) by reducing air use without reducing production. Another, by monitoring air production and energy requirements of the system, selected a properly sized 75 hp compressor to replace a worn-out 250 hp compressor and paid for the new...

Terrell, R. E.

264

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

265

Cold Vacuum Drying Facility Stack Air Sampling System Qualification Tests  

SciTech Connect (OSTI)

This report documents tests that were conducted to verify that the air monitoring system for the Cold Vacuum Drying Facility ventilation exhaust stack meets the applicable regulatory criteria regarding the placement of the air sampling probe, sample transport, and stack flow measurement accuracy.

Glissmeyer, John A.

2001-01-24T23:59:59.000Z

266

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...

267

Catalog of DC Appliances and Power Systems  

E-Print Network [OSTI]

DC solar-powered DC air-conditioning heat pump produced byRoom Air Conditioners Geothermal Heat Pumps Lighting-efficiency of an air source electric heat-pump water heater

Garbesi, Karina

2012-01-01T23:59:59.000Z

268

Iterative Optimal and Adaptive Control of a Near Isothermal Liquid Piston Air Compressor in a Compressed Air Energy Storage System  

E-Print Network [OSTI]

in a Compressed Air Energy Storage System Farzad A. Shirazi, Mohsen Saadat, Bo Yan, Perry Y. Li, and Terry W/expanders are crucial for the economical viability of a Compressed Air Energy Storage (CAES) system such as the one in the Com- pressed Air Energy Storage (CAES) system for offshore wind turbine that has recently been

Li, Perry Y.

269

A systems analysis of scheduled air transportation networks  

E-Print Network [OSTI]

This work establishes the conditions for airline system design building from submodels of smaller aspects of air transportation. The first three sections develop submodels which then are combined in extensive numerical ...

Swan, William M.

1979-01-01T23:59:59.000Z

270

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

271

Ground facilities for a VTOL intercity air transportation system  

E-Print Network [OSTI]

Introduction: This study covers the design of ground facilities, or metroports, for a future form of short haul intercity air transportation, the VTOL Airbus system as described by previous M.I.T. Flight Transportation ...

Allen Edward

1970-01-01T23:59:59.000Z

272

Improved Air Volume Control Logic for VAV Systems  

E-Print Network [OSTI]

position of the terminal boxes. This method is called air volume control logic. Under this control logic, terminal box airflow requirements are met with reduced static pressure. Fan power consumption is minimized. However, the actual system performance also...

Wei, G.; Claridge, D. E.; Sakuri, Y.; M. Liu

2000-01-01T23:59:59.000Z

273

Estimating Energy Savings in Compressed Air Systems  

E-Print Network [OSTI]

are frequently overestimated because the methods used to estimate savings neglect to consider important factors such as compressor control and type, storage, and multiple compressor operation. In this paper, a methodology is presented for modeling air... compressor performance and calculating projected energy savings from easily obtainable performance data such as full-load power, no-load power, rated capacity, average fraction full-load power or average fraction rated capacity. The methodology...

Schmidt, C.; Kissock, J. K.

2004-01-01T23:59:59.000Z

274

FINAL PROJECT REPORT LOAD MODELING TRANSMISSION RESEARCH  

E-Print Network [OSTI]

Air Conditioner Testing in WECC,” IEEE Power  Engineering Air Conditioner Modeling, WECC Load Modeling Task  Force in power system studies: WECC progress update,? Power and 

Lesieutre, Bernard

2013-01-01T23:59:59.000Z

275

Page 1 of 3 Radiogram No. 1679u Form 24 for 03/02/2013  

E-Print Network [OSTI]

Subsystem Preventive Maintenance, Group E FGB 2 Fan Cleaning Inspection of Air Conditioner Inspection Inspection of Air Conditioner Inspection and Cleaning of Auxiliary Computer System () Laptops

276

Register Closing Effects on Forced Air Heating System Performance  

SciTech Connect (OSTI)

Closing registers in forced air heating systems and leaving some rooms in a house unconditioned has been suggested as a method of quickly saving energy for California consumers. This study combined laboratory measurements of the changes in duct leakage as registers are closed together with modeling techniques to estimate the changes in energy use attributed to closing registers. The results of this study showed that register closing led to increased energy use for a typical California house over a wide combination of climate, duct leakage and number of closed registers. The reduction in building thermal loads due to conditioning only a part of the house was offset by increased duct system losses; mostly due to increased duct leakage. Therefore, the register closing technique is not recommended as a viable energy saving strategy for California houses with ducts located outside conditioned space. The energy penalty associated with the register closing technique was found to be minimized if registers furthest from the air handler are closed first because this tends to only affect the pressures and air leakage for the closed off branch. Closing registers nearer the air handler tends to increase the pressures and air leakage for the whole system. Closing too many registers (more than 60%) is not recommended because the added flow resistance severely restricts the air flow though the system leading to safety concerns. For example, furnaces may operate on the high-limit switch and cooling systems may suffer from frozen coils.

Walker, Iain S.

2003-11-01T23:59:59.000Z

277

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

E-Print Network [OSTI]

A web based CBR system for heating ventilation and air conditioning systems sales support D describes the implementation of a case-based reasoning (CBR) system to support heating ventilation and air conditioning systems (HVAC) sales staff operating in remote locations. The system operates on the world wide

Watson, Ian

278

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

279

Integration of air separation membrane and coalescing filter for use on an inlet air system of an engine  

DOE Patents [OSTI]

An intake air separation system suitable for combustion air of an internal combustion engine. An air separation device of the system includes a plurality of fibers, each fiber having a tube with a permeation barrier layer on the outer surface thereof and a coalescing layer on the inner surface thereof, to restrict fluid droplets from contacting the permeation barrier layer.

Moncelle, Michael E. (Bloomington, IL)

2003-01-01T23:59:59.000Z

280

Air-flow regulation system for a coal gasifier  

DOE Patents [OSTI]

An improved air-flow regulator for a fixed-bed coal gasifier is provided which allows close air-flow regulation from a compressor source even though the pressure variations are too rapid for a single primary control loop to respond. The improved system includes a primary controller to control a valve in the main (large) air supply line to regulate large slow changes in flow. A secondary controller is used to control a smaller, faster acting valve in a secondary (small) air supply line parallel to the main line valve to regulate rapid cyclic deviations in air flow. A low-pass filter with a time constant of from 20 to 50 seconds couples the output of the secondary controller to the input of the primary controller so that the primary controller only responds to slow changes in the air-flow rate, the faster, cyclic deviations in flow rate sensed and corrected by the secondary controller loop do not reach the primary controller due to the high frequency rejection provided by the filter. This control arrangement provides at least a factor of 5 improvement in air-flow regulation for a coal gasifier in which air is supplied by a reciprocating compressor through a surge tank.

Fasching, George E. (Morgantown, WV)

1984-01-01T23:59:59.000Z

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

Compact Solid State Cooling Systems: Compact MEMS Electrocaloric Module  

SciTech Connect (OSTI)

BEETIT Project: UCLA is developing a novel solid-state cooling technology to translate a recent scientific discovery of the so-called giant electrocaloric effect into commercially viable compact cooling systems. Traditional air conditioners use noisy, vapor compression systems that include a polluting liquid refrigerant to circulate within the air conditioner, absorb heat, and pump the heat out into the environment. Electrocaloric materials achieve the same result by heating up when placed within an electric field and cooling down when removed—effectively pumping heat out from a cooler to warmer environment. This electrocaloric-based solid state cooling system is quiet and does not use liquid refrigerants. The innovation includes developing nano-structured materials and reliable interfaces for heat exchange. With these innovations and advances in micro/nano-scale manufacturing technologies pioneered by semiconductor companies, UCLA is aiming to extend the performance/reliability of the cooling module.

None

2010-10-01T23:59:59.000Z

282

Literature Review on Underfloor Air Distribution (UFAD) Systems  

E-Print Network [OSTI]

implemented with the improved type of outlet provided the indoor environment quality that meets the standard. McCarry, B.T. 1995. Underfloor air distribution systems: benefits and when to use the system in building design. ASHRAE Trans., 1995, Vol. 101, Pt... the structural slab and the underside of a raised floor to deliver conditioned air to supply outlets located at or near floor level within the occupied zone. The reported benefits of this system are: 1) improved thermal comfort, 2) reduced energy use, 3...

Im, P.; Cho, S.; Haberl, J. S.

2006-01-10T23:59:59.000Z

283

Effect of System and Air Contaminants on PEMFC Performance and Durability (Presentation)  

SciTech Connect (OSTI)

This presentation summarizes Effect of System and Air Contaminants on PEMFC Performance and Durability.

Dinh, H.

2010-06-11T23:59:59.000Z

284

Stability limit of room air temperature of a VAV system  

SciTech Connect (OSTI)

To control heating, ventilating, and air-conditioning (HVAC) systems, it has been necessary to accept an analog system controlled mainly by proportional-plus-integral-plus-derivative (PID) action. However, when conventional PID controllers are replaced with new digital controllers by selecting the same PID parameters as before, the control loops have often got into hunting phenomena, which result in undamped oscillations. Unstable control characteristics (such as huntings) are thought to be one of the crucial problems faced by field operators. The PID parameters must be carefully selected to avoid instabilities. In this study, a room space is simulated as a thermal system that is air-conditioned by a variable-air-volume (VAV) control system. A dynamic room model without infiltration or exfiltration, which is directly connected to a simple air-handling unit without an economizer, is developed. To explore the possible existence of huntings, a numerical system model is formulated as a bilinear system with time-delayed feedback, and a parametric analysis of the stability limit is presented. Results are given showing the stability region affected by the selection of control and system parameters. This analysis was conducted to help us tune the PID controllers for optimal HVAC control.

Matsuba, Tadahiko; Kamimura, Kazuyuki [Yamatake-Honeywell Co., Ltd., Tokyo (Japan). Building System Div.; Kasahara, Masato; Kimbara, Akiomi; Kurosu, Shigeru [Oyama National Coll. of Technology (Japan); Murasawa, Itaru; Hashimoto, Yukihiko [Tonets Corp., Tokyo (Japan). Engineering Project Dept.

1998-12-31T23:59:59.000Z

285

Measured Air Distribution Effectiveness for Residential Mechanical Ventilation Systems  

SciTech Connect (OSTI)

The purpose of ventilation is dilute or remove indoor contaminants that an occupant is exposed to. In a multi-zone environment such as a house, there will be different dilution rates and different source strengths in every zone. Most US homes have central HVAC systems, which tend to mix the air thus the indoor conditions between zones. Different types of ventilation systems will provide different amounts of exposure depending on the effectiveness of their air distribution systems and the location of sources and occupants. This paper will report on field measurements using a unique multi-tracer measurement system that has the capacity to measure not only the flow of outdoor air to each zone, but zone-to-zone transport. The paper will derive seven different metrics for the evaluation of air distribution. Measured data from two homes with different levels of natural infiltration will be used to evaluate these metrics for three different ASHRAE Standard 62.2 compliant ventilation systems. Such information can be used to determine the effectiveness of different systems so that appropriate adjustments can be made in residential ventilation standards such as ASHRAE Standard 62.2.

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

2008-05-01T23:59:59.000Z

286

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...

287

Field Test of Room-to-Room Distribution of Outside Air with Two Residential Ventilation Systems  

SciTech Connect (OSTI)

Uniform distribution of outside air is one way to ensure that residential dilution ventilation systems will provide a known amount of fresh air to all rooms.

Hendron, R.; Anderson, R.; Barley, D.; Rudd, A.; Townsend, A.; Hancock, E.

2008-08-01T23:59:59.000Z

288

E-Print Network 3.0 - air transport system Sample Search Results  

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

University of Nebraska-Lincoln Collection: Engineering 67 Water Modeling of Steel Flow, Air Entrainment and Filtration Summary: , the use of a water system to model air...

289

E-Print Network 3.0 - air transportation system Sample Search...  

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

University of Nebraska-Lincoln Collection: Engineering 67 Water Modeling of Steel Flow, Air Entrainment and Filtration Summary: , the use of a water system to model air...

290

Lessons learned in modeling Underfloor Air Distribution system  

E-Print Network [OSTI]

Underfloor Air Distribution (UFAD) Design Guide. Atlanta:for design cooling loads in underfloor air distribution (

Lee, Kwang Ho; Schiavon, Stefano; Webster, Tom; Bauman, Fred; Feng, Jingjuan; Hoyt, Tyler

2011-01-01T23:59:59.000Z

291

Residential Forced Air System Cabinet Leakage and Blower Performance  

E-Print Network [OSTI]

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

Walker, Iain S.

2010-01-01T23:59:59.000Z

292

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

293

Using ductwork to improve supply plenum temperature distribution in underfloor air distribution (UFAD) system  

E-Print Network [OSTI]

overhead air distribution design(1). 1.3 Thermal comfortS. Under Floor Air Distribution (UFAD) Design Guide. s.l. :load design tool for underfloor air distribution systems.

Pasut, Wilmer

2011-01-01T23:59:59.000Z

294

Closed loop air cooling system for combustion turbines  

DOE Patents [OSTI]

Convective cooling of turbine hot parts using a closed loop system is disclosed. Preferably, the present invention is applied to cooling the hot parts of combustion turbine power plants, and the cooling provided permits an increase in the inlet temperature and the concomitant benefits of increased efficiency and output. In preferred embodiments, methods and apparatus are disclosed wherein air is removed from the combustion turbine compressor and delivered to passages internal to one or more of a combustor and turbine hot parts. The air cools the combustor and turbine hot parts via convection and heat is transferred through the surfaces of the combustor and turbine hot parts.

Huber, David John (North Canton, OH); Briesch, Michael Scot (Orlando, FL)

1998-01-01T23:59:59.000Z

295

Closed loop air cooling system for combustion turbines  

DOE Patents [OSTI]

Convective cooling of turbine hot parts using a closed loop system is disclosed. Preferably, the present invention is applied to cooling the hot parts of combustion turbine power plants, and the cooling provided permits an increase in the inlet temperature and the concomitant benefits of increased efficiency and output. In preferred embodiments, methods and apparatus are disclosed wherein air is removed from the combustion turbine compressor and delivered to passages internal to one or more of a combustor and turbine hot parts. The air cools the combustor and turbine hot parts via convection and heat is transferred through the surfaces of the combustor and turbine hot parts. 1 fig.

Huber, D.J.; Briesch, M.S.

1998-07-21T23:59:59.000Z

296

Measured Air Distribution Effectiveness for Residential Mechanical Ventilation Systems  

E-Print Network [OSTI]

In Review J. Indoor Air) 2007 LBNL-63193 Tarantola, Albert,Gas Measurement to Determine Air Movements in a House,Measurement Techniques”, Air Infiltration and Ventilation

Sherman, Max H.

2008-01-01T23:59:59.000Z

297

air distribution system: Topics by E-print Network  

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

by bringingArnold Schwarzenegger Governor AIR QUALITY IMPACTS OF DISTRIBUTED GENERATION IN THE SOUTH COAST AIR Board, South Coast Air Quality Management District, and San...

298

air distribution systems: Topics by E-print Network  

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

by bringingArnold Schwarzenegger Governor AIR QUALITY IMPACTS OF DISTRIBUTED GENERATION IN THE SOUTH COAST AIR Board, South Coast Air Quality Management District, and San...

299

System transition : dynamics of change in the US air transportation system  

E-Print Network [OSTI]

The US Air Transportation System is currently facing a number of challenges including an increasing demand for travel and growing environmental requirements. In order to successfully meet future needs, the system will need ...

Mozdzanowska, Aleksandra L. (Aleksandra Ludmila), 1979-

2008-01-01T23:59:59.000Z

300

Air flow and particle control with different ventilation systems in a classroom  

E-Print Network [OSTI]

Air flow and particle control with different ventilation systems in a classroom Sture Holmberg, Ph. For displacement ventilation systems, designers normally assume that all pollutants follow the buoyant air flow of the ventilation air flow are shown to play an important role in the control of air quality. Computer simulation

Chen, Qingyan "Yan"

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

Contol of integrated mechanical dehumidification and passive cooling systems to produce energy efficient comfort  

SciTech Connect (OSTI)

Detailed computer simulations validated by full scale testing indicate that roof pond type passive cooling systems can provide acceptable residential temperature conditions in all climates of the United States. Passive cooling systems as presently conceived, however, require complementary dehumidification to carry existing latent loads. A study is made of the relative dehumidification efficiencies of conventional air conditioners and an improved mechanical dehumidifier which utilizes sensible cooling recovery. The effects of dew point and dry bulb temperatures, controller set point and humidity band width, infiltration, and climate are evaluated. A simple dehumidifier sizing procedure is presented. Results indicate that the improved dehumidifiers are several times as efficient as conventional air conditioners under desired steady state room conditions. It is also shown that dehumidifier capacities at AHAM test conditions may be misleading if used for design purposes.

Doderer, E.; Marcus, D.; Hoffner, J.

1982-01-01T23:59:59.000Z

302

High Technology Centrifugal Compressor for Commercial Air Conditioning Systems  

SciTech Connect (OSTI)

R&D Dynamics, Bloomfield, CT in partnership with the State of Connecticut has been developing a high technology, oil-free, energy-efficient centrifugal compressor called CENVA for commercial air conditioning systems under a program funded by the US Department of Energy. The CENVA compressor applies the foil bearing technology used in all modern aircraft, civil and military, air conditioning systems. The CENVA compressor will enhance the efficiency of water and air cooled chillers, packaged roof top units, and other air conditioning systems by providing an 18% reduction in energy consumption in the unit capacity range of 25 to 350 tons of refrigeration The technical approach for CENVA involved the design and development of a high-speed, oil-free foil gas bearing-supported two-stage centrifugal compressor, CENVA encompassed the following high technologies, which are not currently utilized in commercial air conditioning systems: Foil gas bearings operating in HFC-134a; Efficient centrifugal impellers and diffusers; High speed motors and drives; and System integration of above technologies. Extensive design, development and testing efforts were carried out. Significant accomplishments achieved under this program are: (1) A total of 26 builds and over 200 tests were successfully completed with successively improved designs; (2) Use of foil gas bearings in refrigerant R134a was successfully proven; (3) A high speed, high power permanent magnet motor was developed; (4) An encoder was used for signal feedback between motor and controller. Due to temperature limitations of the encoder, the compressor could not operate at higher speed and in turn at higher pressure. In order to alleviate this problem a unique sensorless controller was developed; (5) This controller has successfully been tested as stand alone; however, it has not yet been integrated and tested as a system; (6) The compressor successfully operated at water cooled condensing temperatures Due to temperature limitations of the encoder, it could not be operated at air cooled condensing temperatures. (7) The two-stage impellers/diffusers worked well separately but combined did not match well.

Ruckes, John

2006-04-15T23:59:59.000Z

303

Methods for air cleaning system design and accident analysis  

SciTech Connect (OSTI)

This paper describes methods, in the form of a handbook and five computer codes, that can be used for air cleaning system design and accident analysis. Four of the codes were developed primarily at the Los Alamos National Laboratory, and one was developed in France. Tools such as these are used to design ventilation systems in the mining industry but do not seem to be commonly used in the nuclear industry. For example, the Nuclear Air Cleaning Handbook is an excellent design reference, but it fails to include information on computer codes that can be used to aid in the design process. These computer codes allow the analyst to use the handbook information to form all the elements of a complete system design. Because these analysis methods are in the form of computer codes, they allow the analyst to investigate many alternative designs. In addition, the effects of many accident scenarios on the operation of the air cleaning system can be evaluated. These tools originally were intended for accident analysis, but they have been used mostly as design tools by several architect-engineering firms. The Cray, VAX, and personal computer versions of the codes, an accident analysis handbook, and the codes' availability will be discussed. The application of these codes to several design operations of nuclear facilities will be illustrated, and their use to analyze the effect of several accident scenarios also will be described.

Gregory, W.S.; Nichols, B.D.

1986-01-01T23:59:59.000Z

304

Variable oxygen/nitrogen enriched intake air system for internal combustion engine applications  

DOE Patents [OSTI]

An air supply control system for selectively supplying ambient air, oxygen enriched air and nitrogen enriched air to an intake of an internal combustion engine includes an air mixing chamber that is in fluid communication with the air intake. At least a portion of the ambient air flowing to the mixing chamber is selectively diverted through a secondary path that includes a selectively permeable air separating membrane device due a differential pressure established across the air separating membrane. The permeable membrane device separates a portion of the nitrogen in the ambient air so that oxygen enriched air (permeate) and nitrogen enriched air (retentate) are produced. The oxygen enriched air and the nitrogen enriched air can be selectively supplied to the mixing chamber or expelled to atmosphere. Alternatively, a portion of the nitrogen enriched air can be supplied through another control valve to a monatomic-nitrogen plasma generator device so that atomic nitrogen produced from the nitrogen enriched air can be then injected into the exhaust of the engine. The oxygen enriched air or the nitrogen enriched air becomes mixed with the ambient air in the mixing chamber and then the mixed air is supplied to the intake of the engine. As a result, the air being supplied to the intake of the engine can be regulated with respect to the concentration of oxygen and/or nitrogen.

Poola, Ramesh B. (Woodridge, IL); Sekar, Ramanujam R. (Naperville, IL); Cole, Roger L. (Elmhurst, IL)

1997-01-01T23:59:59.000Z

305

Additions, Alterations, and Repairs Introduction Page 8-1 8 Additions, Alterations, and Repairs  

E-Print Network [OSTI]

conditioning and heating system. 5. Replacing an air conditioner or the exterior unit or indoor coil of a split system air conditioner. 6. Replacing of a furnace or water heater. 7. Replacing windows where all compressor in an air conditioner but not replacing the entire air conditioner. 3. Replacing a failed fan

306

Spring is in the Air and so is a Plethora of Pollen Dr. Joan Bradshaw, County Extension Director  

E-Print Network [OSTI]

and skin. Use air filters and clean regularly, or run an air conditioner and change the air filterSpring is in the Air and so is a Plethora of Pollen Dr. Joan Bradshaw, County Extension Director, Suite 1 Lecanto, FL 34461 Springtime is in the air in Citrus County with its glorious weather

Jawitz, James W.

307

Energy Conservation of Air Conditioning Systems in Large Public Buildings  

E-Print Network [OSTI]

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

Liu, P.; Li, D.

2006-01-01T23:59:59.000Z

308

Method and apparatus for analog signal conditioner for high speed, digital x-ray spectrometer  

DOE Patents [OSTI]

A signal processing system which accepts input from an x-ray detector-preamplifier and produces a signal of reduced dynamic range for subsequent analog-to-digital conversion. The system conditions the input signal to reduce the number of bits required in the analog-to-digital converter by removing that part of the input signal which varies only slowly in time and retaining the amplitude of the pulses which carry information about the x-rays absorbed by the detector. The parameters controlling the signal conditioner's operation can be readily supplied in digital form, allowing it to be integrated into a feedback loop as part of a larger digital x-ray spectroscopy system.

Warburton, William K. (1300 Mills St., Menlo Park, CA 94025); Hubbard, Bradley (Santa Cruz, CA)

1999-01-01T23:59:59.000Z

309

Sensitivity of forced air distribution system efficiency to climate, duct location, air leakage and insulation  

E-Print Network [OSTI]

Location, Air Leakage and Insulation Iain S. Walker Energy4 Duct Insulation, Location and Leakageinsulation

Walker, Iain

2001-01-01T23:59:59.000Z

310

FUJIFILM Hunt Chemicals U.S.A. Achieves Compressed Air System...  

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

FUJIFILM Hunt Chemicals U.S.A. Achieves Compressed Air System Energy-Reduction Goals with a Three-Phased Strategy FUJIFILM Hunt Chemicals U.S.A. Achieves Compressed Air System...

311

The integration of Automatic Speech Recognition into the Air Traffic Control system  

E-Print Network [OSTI]

Today, the Air Traffic Control (ATC) system relies primarily on verbal communication between the air traffic controllers and the pilots of the aircraft in the controlled airspace. Although a computer system exists that ...

Karlsson Joakim

1990-01-01T23:59:59.000Z

312

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

E-Print Network [OSTI]

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

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

2006-01-01T23:59:59.000Z

313

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,...

314

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,...

315

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.

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

1993-01-01T23:59:59.000Z

316

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

317

The Micro Craft iSTAR Micro Air Vehicle: Control System Design and Testing  

E-Print Network [OSTI]

-rotating propellers) benefits both reliability and cost. Figure 1: iSTAR Micro Air Vehicle The Micro Craft iSTAR VTOLThe Micro Craft iSTAR Micro Air Vehicle: Control System Design and Testing Larry Lipera i Abstract The iSTAR Micro Air Vehicle (MAV) is a unique 9-inch diameter ducted air vehicle weighing

Rotkowitz, Michael C.

318

Air and water flows in a large sand box with a two-layer aquifer system  

E-Print Network [OSTI]

Air and water flows in a large sand box with a two-layer aquifer system Xingxing Kuang & Jiu Jimmy negative air pressure can be generated in the vadose zone during pumping. The negative air pressure. The initial water-table depth has a significant effect on the generated negative air pressure. The shallower

Jiao, Jiu Jimmy

319

Raytheon: Compressed Air System Upgrade Saves Energy and Improves Performance  

SciTech Connect (OSTI)

In 2003, Raytheon Company upgraded the efficiency of the compressed air system at its Integrated Air Defense Center in Andover, Massachusetts, to save energy and reduce costs. Worn compressors and dryers were replaced, a more sophisticated control strategy was installed, and an aggressive leak detection and repair effort was carried out. The total cost of these improvements was $342,000; however, National Grid, a utility service provider, contributed a $174,000 incentive payment. Total annual energy and maintenance cost savings are estimated at $141,500, and energy savings are nearly 1.6 million kWh. This case study was prepared for the U.S. Department of Energy's Industrial Technologies Program.

Not Available

2005-04-01T23:59:59.000Z

320

Improving Energy Efficiency of Compressed Air System Based on System Audit  

E-Print Network [OSTI]

plan, formulate energy efficiency goals and adopt energyGO-102004-1926 [3] Energy Efficiency and Market Potential ofImproving Energy Efficiency of Compressed Air System Based

Shanghai, Hongbo Qin; McKane, Aimee

2008-01-01T23:59:59.000Z

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

Improving Energy Efficiency of Compressed Air System Based on System Audit  

E-Print Network [OSTI]

energy efficiency goals and adopt energy conservation measures. Application of the types of compressed air best practicesEnergy Efficiency and Market Potential of Electric Motor System in China. China Machine Pressu re, [4] Best Practices

Shanghai, Hongbo Qin; McKane, Aimee

2008-01-01T23:59:59.000Z

322

Performance Method Overview Page 7-1 7 Performance Method  

E-Print Network [OSTI]

charge in air conditioners · Heating and cooling equipment efficiency · High EER air conditioners storage air conditioners · Air conditioners with evaporatively-cooled condensers · Evaporative coolers ventilation · Zonal control · Water heater efficiency and distribution system type Credit for many

323

Lessons learned in modeling Underfloor Air Distribution system  

E-Print Network [OSTI]

terminal unit (TU) cooling design supply air temperature (due to the low supply airflow at low cooling load conditioncontrol the cooling air flow rate or reheated supply air to

Lee, Kwang Ho; Schiavon, Stefano; Webster, Tom; Bauman, Fred; Feng, Jingjuan; Hoyt, Tyler

2011-01-01T23:59:59.000Z

324

Hybrid membrane--PSA system for separating oxygen from air  

DOE Patents [OSTI]

A portable, non-cryogenic, oxygen generation system capable of delivering oxygen gas at purities greater than 98% and flow rates of 15 L/min or more is described. The system consists of two major components. The first component is a high efficiency membrane capable of separating argon and a portion of the nitrogen content from air, yielding an oxygen-enriched permeate flow. This is then fed to the second component, a pressure swing adsorption (PSA) unit utilizing a commercially available, but specifically formulated zeolite compound to remove the remainder of the nitrogen from the flow. The system is a unique gas separation system that can operate at ambient temperatures, for producing high purity oxygen for various applications (medical, refining, chemical production, enhanced combustion, fuel cells, etc . . . ) and represents a significant advance compared to current technologies.

Staiger, Chad L. (Albuquerque, NM); Vaughn, Mark R. (Albuquerque, NM); Miller, A. Keith (Albuquerque, NM); Cornelius, Christopher J. (Blackburg, VA)

2011-01-25T23:59:59.000Z

325

Compressed Air Energy Savings: SAV-AIR Monitor and Control System and the PNW Compressed Air Challenge  

E-Print Network [OSTI]

Portland, OR Portland, OR ABSTRACT This paper presents the results from two compressed air programs supported by the Northwest Energy Efficiency Alliance (Alliance) over the last five years. In 1997 the Alliance funded the Northwest regional version...Resource Group Portland, OR COMPRESSED A[R CHALLENGE The Compressed Air Challenge (CAC) is a national collaborative that develops and provides resources to educate industrial plant operating staff on ways to increase net profits through compressed air...

Anderson, K. J.; Annen, B.; Scott, S.

326

Residential Forced Air System Cabinet Leakage and Blower Performance  

E-Print Network [OSTI]

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

Walker, Iain S.

2010-01-01T23:59:59.000Z

327

Energy performance of air distribution systems part II: room air stratification full scale testing  

E-Print Network [OSTI]

and are connected to a fan coil unit by flexible ductwork asvariable air volume fan coil units typically used in

Webster, Tom; Lukaschek, Wolfgang; Dickeroff, Darryl; Bauman, Fred

2007-01-01T23:59:59.000Z

328

Method, system and apparatus for monitoring and adjusting the quality of indoor air  

DOE Patents [OSTI]

A system, method and apparatus is provided for monitoring and adjusting the quality of indoor air. A sensor array senses an air sample from the indoor air and analyzes the air sample to obtain signatures representative of contaminants in the air sample. When the level or type of contaminant poses a threat or hazard to the occupants, the present invention takes corrective actions which may include introducing additional fresh air. The corrective actions taken are intended to promote overall health of personnel, prevent personnel from being overexposed to hazardous contaminants and minimize the cost of operating the HVAC system. The identification of the contaminants is performed by comparing the signatures provided by the sensor array with a database of known signatures. Upon identification, the system takes corrective actions based on the level of contaminant present. The present invention is capable of learning the identity of previously unknown contaminants, which increases its ability to identify contaminants in the future. Indoor air quality is assured by monitoring the contaminants not only in the indoor air, but also in the outdoor air and the air which is to be recirculated. The present invention is easily adaptable to new and existing HVAC systems. In sum, the present invention is able to monitor and adjust the quality of indoor air in real time by sensing the level and type of contaminants present in indoor air, outdoor and recirculated air, providing an intelligent decision about the quality of the air, and minimizing the cost of operating an HVAC system.

Hartenstein, Steven D.; Tremblay, Paul L.; Fryer, Michael O.; Hohorst, Frederick A.

2004-03-23T23:59:59.000Z

329

E-Print Network 3.0 - air-distribution systems interactions Sample...  

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

Distribution Systems Bass Abushakra Iain S. Walker... , and the installation of supply boots and diffusers. Introduction The installation of air distribution systems... in the...

330

A MultiAir / MultiFuel Approach to Enhancing Engine System Efficiency...  

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

to Enhancing Engine System Efficiency A MultiAir MultiFuel Approach to Enhancing Engine System Efficiency 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies...

331

E-Print Network 3.0 - air system design Sample Search Results  

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

10 CIVIL ENGINEERING UNDERGRADUATE AREAS OF CONCENTRATION Summary: Wastewater Treatment Systems CE 4300 Air Pollution Control System Design Required Design Course...

332

Sandia National Laboratories: National Air Space radar system  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -theErik Spoerke SSLSMolten-Salt Storage System ArevaNRG SandiaGases inAir Space

333

King Air flight RICO 2004/12/13 page 1 King Air N2UW flight report for December 13, 2004  

E-Print Network [OSTI]

repair of the air conditioner on the aircraft, a test flight was needed and was to be transformedKing Air flight ­ RICO ­ 2004/12/13 page 1 King Air N2UW flight report for December 13, 2004 Crew: Drew, Vali, Oolman, Glover After

Vali, Gabor

334

A New Contactless Conveyor System for Handling Clean and Delicate Products Using Induced Air Flows  

E-Print Network [OSTI]

A New Contactless Conveyor System for Handling Clean and Delicate Products Using Induced Air Flows thanks to an air cushion and induced air flows. A model of the system is established or in semiconductor production processes. Furthermore, dry fric- tion forces are canceled, which enables accurate

Paris-Sud XI, Université de

335

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

336

COMPRESSED-AIR ENERGY STORAGE SYSTEMS FOR STAND-ALONE OFF-GRID PHOTOVOLTAIC MODULES  

E-Print Network [OSTI]

COMPRESSED-AIR ENERGY STORAGE SYSTEMS FOR STAND-ALONE OFF-GRID PHOTOVOLTAIC MODULES Dominique materials, flywheels, pumped hydro (PH), superconducting magnetic energy storage (SMES) and compressed air-grid alternative to the large-scale compressed air energy storage systems we propose to examine the viability

Deymier, Pierre

337

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

E-Print Network [OSTI]

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

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

2006-01-01T23:59:59.000Z

338

Energy performance of underfloor air distribution systems part V: energy plus development  

E-Print Network [OSTI]

heating coil (fan outlet, coil inlet); the unit air outletVS) fan and reheat coil is an air system terminal unitfan is upstream of the heating coil (this is a blow-through unit).

Buhl, Fred

2007-01-01T23:59:59.000Z

339

Optimization of supply air temperature reset schedule for a single duct VAV systems  

E-Print Network [OSTI]

In a single duct variable air volume (SDVAV) system, the supply air temperature is usually set as a constant value. Since this constant setpoint is selected to satisfy the maximum cooling load conditions, significant reheat will occur once...

Fan, Wenshu

2009-05-15T23:59:59.000Z

340

E-Print Network 3.0 - advanced automation system air traffic...  

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

burdened air traffic control (ATC) systems that are at or near their desig- nated maximum handling... of ground-based ATC but to use automation to support air traffic...

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

Moltox™ Chemical Air Separation System-A Progress Report  

E-Print Network [OSTI]

MOLTOX~* CHEMICAL AIR SEPARATION SYSTEM - A PROGRESS REPORT Donald C. Er1ckson Energy Concepts Co. Annapo11s, Maryland W111iam R. Brown and Br1an R. Dunbobb1n A1r Products and Chem1ca1s, Inc. Allentown, Pennsy1van1a Robert G. Massey U....S. Department of Energy Wash1ngton, D.C. ABSTRACT A new low energy route to tonnage oxygen product1on, the HOLTOX~ system, 1s now commenc1ng p110t plant test1ng. The process, 1ts h1story, and potent1a1 app11cat10ns will be descr1bed, 1n add1t1on...

Erickson, D. C.; Brown, W. R.; Dunbobbin, B. R.; Massey, R. G.

342

INFLUENCE OF SUPPLY AIR TEMPERATURE ON UNDERFLOOR AIR DISTRIBUTION (UFAD) SYSTEM ENERGY PERFORMANCE  

E-Print Network [OSTI]

chilled water cooling coil, and supply fan. The fan is aspecify the VAV box cooling design supply air temperature (the underfloor supply plenum (thereby, reducing room cooling

2012-01-01T23:59:59.000Z

343

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

E-Print Network [OSTI]

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

Reitz, Sven; Schneider, Peter

2008-01-01T23:59:59.000Z

344

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

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomentheATLANTA, GA - U.S. Department ofThe U.S.D.C. - Energy Secretary WASHINGTON,to

345

Establish the Commercial Pacakge Air Conditioners and Commercial Warm Air Furnaces WG  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up from theDepartment ofEnergy.pdfApplications: Heating Cooling OPUBLICLeadcommercial

346

A study of pressure losses in residential air distribution systems  

SciTech Connect (OSTI)

An experimental study was conducted to evaluate the pressure drop characteristics of residential duct system components that are either not available or not thoroughly (sometimes incorrectly) described in existing duct design literature. The tests were designed to imitate cases normally found in typical residential and light commercial installations. The study included three different sizes of flexible ducts, under different compression configurations, splitter boxes, supply boots, and a fresh air intake hood. The experimental tests conformed to ASHRAE Standard 120P--''Methods of Testing to Determine Flow Resistance of HVAC Air Ducts and Fittings''. The flexible duct study covered compressibility and bending effects on the total pressure drop, and the results showed that the available published references tend to underestimate the effects of compression in flexible ducts that can increase pressure drops by up to a factor of nine. The supply boots were tested under different configurations including a setup where a flexible duct elbow connection was considered as an integral part of the supply boot. The supply boots results showed that diffusers can increase the pressure drop by up to a factor of two in exit fittings, and the installation configuration can increase the pressure drop by up to a factor of five. The results showed that it is crucial for designers and contractors to be aware of the compressibility effects of the flexible duct, and the installation of supply boots and diffusers.

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

2002-07-01T23:59:59.000Z

347

air heating system: Topics by E-print Network  

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

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

348

air systems metodologia: Topics by E-print Network  

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

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

349

air heating systems: Topics by E-print Network  

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

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

350

Heat transfer pathways in underfloor air distribution (UFAD) systems  

E-Print Network [OSTI]

room cooling load, room air setpoint, and supply air temper-distribution of room cooling load into the supply plenum orof room cooling load between the underfloor supply plenum

Bauman, F.; Jin, H.; Webster, T.

2006-01-01T23:59:59.000Z

351

Improving Energy Efficiency of Compressed Air System Based onSystem Audit  

SciTech Connect (OSTI)

Industrial electric motor systems consume more than 600billion kWh annually, accounting for more than 50 percent of China selectricity use. The International Energy Agency estimates thatoptimizing motor systems results in an improvement of 20-25 percent,which is well-supported by experience in both the U.S. and China.Compressed air systems in China use 9.4 percent of all electricity.Compressed air use in China is growing rapidly, as new industrial plantsare built and the production processes of existing plants expand andchange. Most of these systems, whether existing or new, are not optimizedfor energy efficiency. This paper will present a practitioner'sperspective on theemergence of compressed air auditing services inChina, specifically as it pertains to Shanghai and surrounding areas.Both the methodology used and the market development of these compressedair system services will be addressed. Finally, the potential for energysaving opportunities will be described based on highlights from over 50compressed air system energy audits completed by Shanghai EnergyConservation Service Center, both during the United Nations IndustrialDevelopment Organization (UNIDO) China Motor System Energy ConservationProgram, and after this training program was completed.

Shanghai, Hongbo Qin; McKane, Aimee

2007-06-01T23:59:59.000Z

352

Air traffic complexity and the interacting particle system method: An integrated approach for collision risk estimation  

E-Print Network [OSTI]

Air traffic complexity and the interacting particle system method: An integrated approach explore the possibility of using air traffic complexity metrics to accelerate the Interacting Particle to assess the performance and impact of, e.g., possible modifications of the current air traffic management

Del Moral , Pierre

353

DRAFT: NONLINEAR CONTROLLER DESIGN WITH BANDWIDTH CONSIDERATION FOR A NOVEL COMPRESSED AIR ENERGY STORAGE SYSTEM  

E-Print Network [OSTI]

regulation and gen- erator power tracking for a Compressed Air Energy Storage (CAES) system, a nonlinearDRAFT: NONLINEAR CONTROLLER DESIGN WITH BANDWIDTH CONSIDERATION FOR A NOVEL COMPRESSED AIR ENERGY available wind power in normal situations. Storing energy in high pressure compressed air is attractive

Li, Perry Y.

354

ENVIRONMENTAL INFORMATION SYSTEM FOR ANALYSIS AND FORECAST OF AIR POLLUTION (APPLICATION TO SANTIAGO DE CHILE)  

E-Print Network [OSTI]

ENVIRONMENTAL INFORMATION SYSTEM FOR ANALYSIS AND FORECAST OF AIR POLLUTION (APPLICATION Chile and other cities in Chile, air pollution is a dramatic problem. An Environmental Information planning. Using a model-based EIS for air pollution it is possible (i) to study complex source

Bertossi, Leopoldo

355

Parallel NonLinear Optimization : Towards The Design Of A Decision Support System For Air  

E-Print Network [OSTI]

outcomes (e.g. financial return) whilst minimizing environmental damage. In the area of air pollution, such technology has been used for real world studies predicting air pollution levels over a planning horizon1 Parallel Non­Linear Optimization : Towards The Design Of A Decision Support System For Air

Abramson, David

356

Environmental turbulent mixing controls on air-water gas exchange in marine and aquatic systems  

E-Print Network [OSTI]

linked with gas transfer. Microbreaking, or the breakdown of small-scale waves that do not entrain airEnvironmental turbulent mixing controls on air-water gas exchange in marine and aquatic systems; accepted 5 April 2007; published 17 May 2007. [1] Air-water gas transfer influences CO2 and other

Ho, David

357

Thermal decay in underfloor air distribution (UFAD) systems: Fundamentals and influence on system performance  

E-Print Network [OSTI]

Underfloor Air Distribution (UFAD) Design Guide. Atlanta:for design cooling loads in underfloor air distribution (

Lee, Kwang Ho; Schiavon, Stefano; Bauman, Fred; Webster, Tom

2012-01-01T23:59:59.000Z

358

Comparing Mainframe and Windows Server Transactions per kWh  

E-Print Network [OSTI]

..................................................................................................................................15 Air Conditioner (Heat Pump) Efficiency Units

Narasayya, Vivek

359

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

360

E-Print Network 3.0 - automotive air-conditioning system Sample...  

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

EGTE456 Fundamentals of Heating, Ventilation and Air Conditioning ELEG420 Solar Electric Systems... CIEG351 Transportation Engineering MEEG425 Automotive Powertrain...

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

E-Print Network 3.0 - air injection systems Sample Search Results  

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

systems. Different methods for measuring air-leakage rates were also compared... , and Refrigeration ... Source: Lawrence Berkeley National Laboratory, Environmental Energy...

362

E-Print Network 3.0 - air control system Sample Search Results  

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

Search Powered by Explorit Topic List Advanced Search Sample search results for: air control system Page: << < 1 2 3 4 5 > >> 1 The Pennsylvania State University Confined Space...

363

Electric, Gas, and Electric/Gas Energy Options for Cold-Air HVAC Systems  

E-Print Network [OSTI]

and incorporated into HVAC design for medium-to-large buildings, it is possible to structure system arrangements that reduce energy operating costs very significantly compared to conventional all-air VAV systems and also to all-air VAV ice thermal storage systems...

Meckler, G.

1989-01-01T23:59:59.000Z

364

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

365

Compressed Air Audits: A Holistic Approach -Addressing the Air System as a Whole  

E-Print Network [OSTI]

energy savings. The quality and comprehensiveness of manufacturing facilities, and therefore audits, vary widely and it is important to consider experience. Compressed Air Technologies has audited nearly 200 manufacturing facilities since our inception...

Shaver, D.

2011-01-01T23:59:59.000Z

366

Supply fan energy use in pressurized underfloor air distribution systems  

E-Print Network [OSTI]

air-water devices like fan coil units and water source heatsuch as VAV boxes and fan coil units. One fairly typical

Webster, Tom P.E.; Bauman, Fred P.E.; Ring, Erik P.E.

2000-01-01T23:59:59.000Z

367

Environmental policymaking for air transportation : toward an emissions trading system.  

E-Print Network [OSTI]

??Aviation is at a turning point. Considerable improvements in aircraft emissions efficiencies are expected through technological improvements, air traffic management, and managerial strategies. But global… (more)

De Serres, Martine.

2007-01-01T23:59:59.000Z

368

Human-System Safety Methods for Development of Advanced Air Traffic Management Systems  

SciTech Connect (OSTI)

The Idaho National Engineering and Environmental Laboratory (INEEL) is supporting the National Aeronautics and Space Administration in the development of advanced air traffic management (ATM) systems as part of the Advanced Air Transportation Technologies program. As part of this program INEEL conducted a survey of human-system safety methods that have been applied to complex technical systems, to identify lessons learned from these applications and provide recommendations for the development of advanced ATM systems. The domains that were surveyed included offshore oil and gas, commercial nuclear power, commercial aviation, and military. The survey showed that widely different approaches are used in these industries, and that the methods used range from very high-level, qualitative approaches to very detailed quantitative methods such as human reliability analysis (HRA) and probabilistic safety assessment (PSA). In addition, the industries varied widely in how effectively they incorporate human-system safety assessment in the design, development, and testing of complex technical systems. In spite of the lack of uniformity in the approaches and methods used, it was found that methods are available that can be combined and adapted to support the development of advanced air traffic management systems.

Nelson, W.R.

1999-05-24T23:59:59.000Z

369

Short communication Optimization of hybrid ground coupled and air source heat pump systems  

E-Print Network [OSTI]

Short communication Optimization of hybrid ­ ground coupled and air source ­ heat pump systems 2008 Accepted 14 January 2010 Available online 28 January 2010 Keywords: Ground coupled heat pump Air to water heat pump Thermal storage device Hybrid HVAC system Energy efficiency Numerical simulation a b

Fernández de Córdoba, Pedro

370

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

371

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

E-Print Network [OSTI]

Modelica Library for Building Heating, Ventilation and Air-Conditioning Systems Michael Wetter available Modelica library for building heating, ventilation and air conditioning systems. The library is based on the Modelica.Fluid library. It has been developed to support research and development

372

Intelligent Residential Air-Conditioning System with Smart-Grid Functionality  

E-Print Network [OSTI]

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

Tesfatsion, Leigh

373

Modeling the pneumatic subsystem of a S-cam air brake system  

E-Print Network [OSTI]

The air brake system is one of the critical components in ensuring the safe operation of any commercial vehicle. This work is directed towards the development of a fault-free model of the pneumatic subsystem of the air brake system. This model can...

Coimbatore Subramanian, Shankar

2004-09-30T23:59:59.000Z

374

Figure 1. Schematic of initial air pump design Design of Air Pump System Using Bond Graph  

E-Print Network [OSTI]

, is presented in Figure 1. It is a vibratory pump in which an electromagnetic circuit drives a small permanent magnet attached to a pivoted lever that, in turn, drives a rubber bellows pump. The bellows pump has of the cascaded arrangement of three coupled subsystems: the electromagnetic actuator, the lever, and the air

Fernandez, Thomas

375

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 &...

376

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

377

NREL research determines optimal HVAC system design for proper air mixing and thermal comfort in homes.  

E-Print Network [OSTI]

NREL research determines optimal HVAC system design for proper air mixing and thermal comfort in homes. As U.S. homes become more energy efficient, heating, ventilation, and cooling (HVAC) systems

378

A model for an under floor air distribution system Y.J.P. Lina,*, P.F. Lindenb  

E-Print Network [OSTI]

cool air from above. This geometrical design induces entrainment of warm air at the top of the roomA model for an under floor air distribution system Y.J.P. Lina,*, P.F. Lindenb a Energy Abstract We present a simplified model of an underfloor air distribution (UFAD) system consisting

Linden, Paul F.

379

Expert system for the design of heating, ventilating, and air-conditioning systems. Master's thesis  

SciTech Connect (OSTI)

Expert systems are computer programs that seek to mimic human reason. An expert system shelf, a software program commonly used for developing expert systems in a relatively short time, was used to develop a prototypical expert system for the design of heating, ventilating, and air-conditioning (HVAC) systems in buildings. Because HVAC design involves several related knowledge domains, developing an expert system for HVAC design requires the integration of several smaller expert systems known as knowledge bases. A menu program and several auxiliary programs for gathering data, completing calculations, printing project reports, and passing data between the knowledge bases are needed and have been developed to join the separate knowledge bases into one simple-to-use program unit.

Camejo, P.J.

1989-12-01T23:59:59.000Z

380

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

E-Print Network [OSTI]

). If the system can be transformed into linear system by mathematic method, control strategy will be simplified. It is noted that differential geometry theory is applicable to simplify the system described by equation (4). 3. DIFFERENTIABLE HOMEOMORPHI..., stability and other aspects. Key words: VAV; differentiable homeomorphism; nonlinear feedback; simulation 1. INTRODUCTION In order to maintain indoor air temperature at set value, there are two methods in the air-conditioning system. One method...

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

2006-01-01T23:59:59.000Z

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

Metering Air Compressor Systems for Efficiency: A Progress Report  

E-Print Network [OSTI]

Air compressors have energy efficiency quantified as SCFM/BHP. However, this efficiency fluctuates over a broad range based on the loading of the compressor. When multiple compressors operate with varying loads, as in a central plant, the overall...

Joseph, B.

2005-01-01T23:59:59.000Z

382

Air cooled turbine component having an internal filtration system  

DOE Patents [OSTI]

A centrifugal particle separator is provided for removing particles such as microscopic dirt or dust particles from the compressed cooling air prior to reaching and cooling the turbine blades or turbine vanes of a turbine engine. The centrifugal particle separator structure has a substantially cylindrical body with an inlet arranged on a periphery of the substantially cylindrical body. Cooling air enters centrifugal particle separator through the separator inlet port having a linear velocity. When the cooling air impinges the substantially cylindrical body, the linear velocity is transformed into a rotational velocity, separating microscopic particles from the cooling air. Microscopic dust particles exit the centrifugal particle separator through a conical outlet and returned to a working medium.

Beeck, Alexander R. (Orlando, FL)

2012-05-15T23:59:59.000Z

383

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.

384

Investment-Grade Compressed Air System Audit, Analysis, and Upgrade in a Pulp and Paper Mill  

E-Print Network [OSTI]

INVESTMENT-GRADE COMPRESSED AIR SYSTEM AUDIT, ANALYSIS, AND UPGRADE IN A PULP & PAPER MILL Paresh S. Parekh, P.E. Principal ABSTRACT An investment-grade compressed air audit, analysis, design, and upgrade in an industrial facility requires a..., West Tacoma Division, located in Washington State, had production capability of 540 tons per day of recycle newsprint manufactured from TMP and recycled paper. Over the years, as mill capacity increased, various sizes and types of air compressor...

Parekh, P. S.

385

Recent developments in orifice meter and flow conditioner research  

SciTech Connect (OSTI)

In 1969 concerns were raised regarding the validity of the orifice meter`s coefficient of discharge uncertainty. An effort to resolve these concerns resulted in an internationally supported research project which produced a new sharp-edged concentric orifice meter empirical database and coefficient of discharge equation. However, the new empirical database and coefficient of discharge equation did not account for all of the differences being encountered in orifice metering. And in 1986, as a derivative of the coefficient of discharge equation research, questions were raised regarding the influences of installation effects on the orifice meter`s coefficient of discharge. The 1986 EC research data indicated that the flow conditioner and straight pipe installation requirements of the flow measurement standards were inadequate to prevent biasing of the orifice meter`s coefficient of discharge by flow disturbances generated from upstream piping elements. Data generated from 1990 through 1993 by GRI sponsored SWRI and NIST research confirmed the original EC biasing and further identified differential pressure tap radial position sensitivity and velocity profile and swirl angle theory deficiencies. Current research is continuing to define installation effects influences and identify possible solutions.

LaNasa, P.J. [CPL and Associates, Houston, TX (United States)

1995-12-31T23:59:59.000Z

386

Evaluation of an air drilling cuttings containment system  

SciTech Connect (OSTI)

Drilling at hazardous waste sites for environmental remediation or monitoring requires containment of all drilling fluids and cuttings to protect personnel and the environment. At many sites, air drilling techniques have advantages over other drilling methods, requiring effective filtering and containment of the return air/cuttings stream. A study of. current containment methods indicated improvements could be made in the filtering of radionuclides and volatile organic compounds, and in equipment like alarms, instrumentation or pressure safety features. Sandia National Laboratories, Dept. 61 11 Environmental Drilling Projects Group, initiated this work to address these concerns. A look at the industry showed that asbestos abatement equipment could be adapted for containment and filtration of air drilling returns. An industry manufacturer was selected to build a prototype machine. The machine was leased and put through a six-month testing and evaluation period at Sandia National Laboratories. Various materials were vacuumed and filtered with the machine during this time. In addition, it was used in an actual air drive drilling operation. Results of these tests indicate that the vacuum/filter unit will meet or exceed our drilling requirements. This vacuum/filter unit could be employed at a hazardous waste site or any site where drilling operations require cuttings and air containment.

Westmoreland, J.

1994-04-01T23:59:59.000Z

387

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

E-Print Network [OSTI]

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

Zhu, H.

2006-01-01T23:59:59.000Z

388

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

389

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

E-Print Network [OSTI]

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

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

2006-01-01T23:59:59.000Z

390

STATE OF CALIFORNIA AIR, WATER SIDE SYSTEM, SERVICE HOT WATER & POOL REQUIREMENTS  

E-Print Network [OSTI]

/Cool 144(d) Economizer 144(e) Heat and Cool Air Supply Reset 144(f) Electric Resistance Heating1 144(g) Heat Rejection System §144 (h) Air Cooled Chiller Limitation §144 (i) Duct Leakage Sealing. If Yes, a MECH-4-A must be submitted 144(k) 1. Total installed capacity (MBtu/hr) of all electric heat

391

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

E-Print Network [OSTI]

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

Mohamed, E.; Abdalla, K. N.

2010-01-01T23:59:59.000Z

392

Field measurements of interactions between furnaces and forced air distribution systems  

E-Print Network [OSTI]

of equipment that provides the heating energy (the furnace, boiler or heat pump) and the method usedLBNL 40587 Field measurements of interactions between furnaces and forced air distribution systems Vol. 104 Part 1 Field measurements of interactions between furnaces and forced air distribution

393

NGATS ATM-Airportal Project Reference Material (External Release) Next Generation Air Transportation System  

E-Print Network [OSTI]

NGATS ATM-Airportal Project Reference Material (External Release) Next Generation Air Transportation System (NGATS) Air Traffic Management (ATM) - Airportal Project Reference Material May 23, 2007 Manager NASA Mike Madson Project Scientist NASA #12;NGATS ATM-Airportal Project Reference Material

394

THE SCIENCE-POLICYINTERFACE:Using The Entire Scientific Toolbox To Enhance the Air Quality Management System  

E-Print Network [OSTI]

Quality Management System The preceding chapters demonstrate the significant progress made during the last as an initial step to aid policy makers in designing and evaluating future management strategies. 5.1 THE AIR-QUALITY air-quality management processes, certain elements are common to each. These common elements

395

Dust in the Earth system: The biogeochemical linking of land, air, and  

E-Print Network [OSTI]

1 Dust in the Earth system: The biogeochemical linking of land, air, and sea Andy Ridgwell1 of CO2 from the atmosphere. The complex way in which dust biogeochemically links land, air, and sea of atmospheric aerosols. In this review, however, we consider dust to be soil mineral fragments. The entrainment

Kohfeld, Karen

396

Feedback air-fuel control system for Stirling engines  

SciTech Connect (OSTI)

This patent describes improvement in combination with a Stirling engine having an air-fuel ratio control and an exhaust gas emission outlet. The improvement comprises an oxygen sensor in communication with the exhaust gas emission outlet for generating an output signal representative of the oxygen content in the outlet; a sensor signal conditioning unit for adapting the output signal to a conditioned input signal for a microprocessor; and a microprocessor controlled pilot for adjusting the air-fuel control in response to the control input signal.

Monahan, R.

1991-11-19T23:59:59.000Z

397

Dynamic Performance and Control of a Multilevel Universal Power Conditioner Leon M. Tolbert, Fang Z. Peng Thomas G. Habetler  

E-Print Network [OSTI]

-to-back diode-clamped inverters that constitute the universal power conditioner. An experimental verification. To meet the objectives detailed in these new premium power agreements, the implementation of advanced- clamped inverter into a universal power conditioner is an enticing prospect. For a multilevel universal

Tolbert, Leon M.

398

Want Some Money Back from your Compressed Air System? Check Out These Top 10 Areas to Look  

E-Print Network [OSTI]

Compressed air is often overlooked in energy studies because many people don't fully understand compressed air equipment, the air system or what it costs to produce compressed air power. For those willing to look and use some good old common sense it is...

Van Ormer, H.

2004-01-01T23:59:59.000Z

399

Experimental investigation on performance of ice storage air-conditioning system with separate heat pipe  

SciTech Connect (OSTI)

An experimental study on operation performance of ice storage air-conditioning system with separate helical heat pipe is conducted in this paper. The experimental system of ice storage air-conditioning system with separate heat pipe is set up. The performance parameters such as the evaporation pressure and the condensation pressure of refrigeration system, the refrigeration capacity and the COP (coefficient of performance) of the system, the IPF (ice packing factor) and the cool storage capacity in the cool storage tank during charging period, and the cool discharge rate and the cool discharge capacity in the cool storage tank, the outlet water temperature in the cool storage tank and the outlet air temperature in room unit during discharging period are investigated. The experimental results show that the ice storage air-conditioning system with separate helical heat pipe can stably work during charging and discharging period. This indicates that the ice storage air-conditioning system with separate helical heat pipe is well adapted to cool storage air-conditioning systems in building. (author)

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

2009-11-15T23:59:59.000Z

400

Evaluation of a CFD-model for simulation of simplified flow conditioners  

SciTech Connect (OSTI)

Perforated plate flow conditioners are used to generate a fully developed turbulent flow profile upstream of an orifice meter. It is very time-consuming to measure the effect of a flow conditioner for different upstream flow profiles. Therefore a project is initiated to evaluate the performance of a computational fluid computer code for this purpose. If the code correctly predicts the flow characteristics downstream of more complex flow conditioners. In this study a k-{var_epsilon} CFD-model was used to predict the flow downstream of obstruction plates having one large or nine small holes. Both mean velocity, turbulent kinetic energy, k, and the dissipation rate of turbulent kinetic energy, {var_epsilon}, were calculated and compared against measured data. The results indicate that it is possible to predict the mean velocity well and that the accuracy of the predicted k and {var_epsilon} depends on the complexity of the flow.

Erdal, A. [Statoil/K-LAB, Haugesund (Norway); Torbergsen, L.E.; Rimestad, S.; Krogstad, P.A. [Norwegian Inst. of Technology, Trondheim (Norway)

1995-12-31T23:59:59.000Z

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

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

402

Air-Cooled Condensers in Next-Generation Conversion Systems Geothermal...  

Open Energy Info (EERE)

makeup. Though they use no water, air-cooling systems have higher capital costs, reduced power output (heat is rejected at a higher temperature), lower power sales due to higher...

403

Air Distribution and Microenvironment Evaluation of a Desktop Task Conditioning System  

E-Print Network [OSTI]

Task conditioning aims to provide each occupant with personalized clean air direct to the breathing zone. The microenvironment of a typical office workplace, consisting of two desktop task conditioning systems (a Horizontal Desk Grill (HDG...

Zheng, G.

2006-01-01T23:59:59.000Z

404

Avionics and control system development for mid-air rendezvous of two unmanned aerial vehicles  

E-Print Network [OSTI]

A flight control system was developed to achieve mid-air rendezvous of two unmanned aerial vehicles (UAVs) as a part of the Parent Child Unmanned Aerial Vehicle (PCUAV) project at MIT and the Draper Laboratory. A lateral ...

Park, Sanghyuk, 1973-

2004-01-01T23:59:59.000Z

405

Analysis of a Retrofitted Thermal Energy Storage Air-conditioning System of a Marine Museum.  

E-Print Network [OSTI]

??Thermal energy storage(TES) air-conditioning system is a electrical load management technology with great potential to shift load from peak to off-peak utility periods. TES is… (more)

Yu, Po-wen

2005-01-01T23:59:59.000Z

406

Complexity within the Air Force acquisition system gaining insight from a theory of collapse  

E-Print Network [OSTI]

Joseph Tainter's theory of societal collapse is applied in an examination of the U.S. Air Force's aircraft acquisition system in order to gain insight into the enterprise's lagging performance. Theories of collapse at both ...

Marticello, Daniel Nicholas, Jr

2012-01-01T23:59:59.000Z

407

E-Print Network 3.0 - air sampling system Sample Search Results  

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

system... in correlation to the air exchange rate and the sampling duration time for an ice rink arena. The theoretical ACH... higher values ( i.e. areas very close to the main...

408

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

409

Decentralized robust control-system for a non-square MIMO system, the air-path of a turbocharged Diesel engine  

E-Print Network [OSTI]

and greenhouse gas pollutants. In this paper, a non-square multivariable controller for the air-path systemDecentralized robust control-system for a non-square MIMO system, the air-path of a turbocharged the performance of the proposed control-system. Keywords: Diesel engine air path, Robust control, CRONE

Paris-Sud XI, Université de

410

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

411

A mathematical model for air brake systems in the presence of leaks  

E-Print Network [OSTI]

A MATHEMATICAL MODEL FOR AIR BRAKE SYSTEMS IN THE PRESENCE OF LEAKS A Thesis by SRIVATSAN RAMARATHNAM Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE... August 2008 Major Subject: Mechanical Engineering A MATHEMATICAL MODEL FOR AIR BRAKE SYSTEMS IN THE PRESENCE OF LEAKS A Thesis by SRIVATSAN RAMARATHNAM Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

Ramaratham, Srivatsan

2008-10-10T23:59:59.000Z

412

Engineering Design Example CompressedCompressed--Air System for a Manufacturing PlantAir System for a Manufacturing Plant  

E-Print Network [OSTI]

*1.35=1900 cfm. · Centrifugal or reciprocating compressor may be chosen (later). From handbooks: P kk /)1 to operate C/A tools: Compressor and piping layoutCompressor and piping layout Air supply circumferentially: · Estimate the load [cfm] based on current and future demand. · Size the compressor(s). · Size the pipes so

Kostic, Milivoje M.

413

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

DOE Patents [OSTI]

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

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

2013-09-10T23:59:59.000Z

414

Development of an Integrated Residential Heating, Ventilation, Cooling, and Dehumidification System for Residences  

SciTech Connect (OSTI)

The Need and the Opportunity Codes such as ASHRAE 90.2 and IECC, and programs such as Energy Star and Builders Challenge, are causing new homes to be built to higher performance standards. As a result sensible cooling loads in new homes are going down, but indoor air quality prerogatives are causing ventilation rates and moisture loads to increase in humid climates. Conventional air conditioners are unable to provide the low sensible heat ratios that are needed to efficiently cool and dehumidify homes since dehumidification potential is strongly correlated with cooling system operating hours. The project team saw an opportunity to develop a system that is at least as effective as a conventional air conditioner plus dehumidifier, removes moisture without increasing the sensible load, reduces equipment cost by integrating components, and simplifies installation. Project Overview Prime contractor Davis Energy Group led a team in developing an Integrated Heating, Ventilation, Cooling, and Dehumidification (I-HVCD) system under the DOE SBIR program. Phase I and II SBIR project activities ran from July 2003 through December 2007. Tasks included: (1) Mechanical Design and Prototyping; (2) Controls Development; (3) Laboratory and Field Testing; and (4) Commercialization Activities Technology Description. Key components of the prototype I-HVCD system include an evaporator coil assembly, return and outdoor air damper, and controls. These are used in conjunction with conventional components that include a variable speed air handler or furnace, and a two-stage condensing unit. I-HVCD controls enable the system to operate in three distinct cooling modes to respond to indoor temperature and relative humidity (RH) levels. When sensible cooling loads are high, the system operates similar to a conventional system but varies supply airflow in response to indoor RH. In the second mode airflow is further reduced, and the reheat coil adds heat to the supply air. In the third mode, the reheat coil adds additional heat to maintain the supply air temperature close to the return air temperature (100% latent cooling). Project Outcomes Key Phase II objectives were to develop a pre-production version of the system and to demonstrate its performance in an actual house. The system was first tested in the laboratory and subsequently underwent field-testing at a new house in Gainesville, Florida. Field testing began in 2006 with monitoring of a 'conventional best practices' system that included a two stage air conditioner and Energy Star dehumidifier. In September 2007, the I-HVCD components were installed for testing. Both systems maintained uniform indoor temperatures, but indoor RH control was considerably better with the I-HVCD system. The daily variation from average indoor humidity conditions was less than 2% for the I-HVCD vs. 5-7% for the base case system. Data showed that the energy use of the two systems was comparable. Preliminary installed cost estimates suggest that production costs for the current I-HVCD integrated design would likely be lower than for competing systems that include a high efficiency air conditioner, dehumidifier, and fresh air ventilation system. Project Benefits This project verified that the I-HVCD refrigeration compacts are compact (for easy installation and retrofit) and can be installed with air conditioning equipment from a variety of manufacturers. Project results confirmed that the system can provide precise indoor temperature and RH control under a variety of climate conditions. The I-HVCD integrated approach offers numerous benefits including integrated control, easier installation, and reduced equipment maintenance needs. Work completed under this project represents a significant step towards product commercialization. Improved indoor RH control and fresh air ventilation are system attributes that will become increasingly important in the years ahead as building envelopes improve and sensible cooling loads continue to fall. Technologies like I-HVCD will be instrumental in meeting goals set by Building America

Hoeschele, M.A.; D.A. Springer

2008-06-18T23:59:59.000Z

415

United Technologies Corporation: Achieving Competitive Excellence (ACE): Operating System Case Study  

E-Print Network [OSTI]

United Technologies Corporation (abbreviated UTC, NYSE ticker symbol UTX) is a large, industrial conglomerate that designs, manufactures, and services a broad range of products, ranging from air conditioners and elevators ...

Roth, George

2010-11-30T23:59:59.000Z

416

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

417

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

E-Print Network [OSTI]

of VWV System 4. Example of VAV System 5. Conclusions 2 ESL-IC-14-09-06 Proceedings of the 14th International Conference for Enhanced Building Operations, Beijing, China, September 14-17, 2014 ? Energy consumption of air and water distribution in air...-09-06 Proceedings of the 14th International Conference for Enhanced Building Operations, Beijing, China, September 14-17, 2014 1. Issues 2. Simulation Model of Distribution System 3. Example of VWV System 4. Example of VAV System 5. Conclusions 7 ESL-IC-14...

Yoshida, H.; Noda, T.

2014-01-01T23:59:59.000Z

418

Promising future energy storage systems: Nanomaterial based systems, Zn-air and electromechanical batteries  

SciTech Connect (OSTI)

Future energy storage systems will require longer shelf life, higher duty cycles, higher efficiency, higher energy and power densities, and be fabricated in an environmentally conscious process. This paper describes several possible future systems which have the potential of providing stored energy for future electric and hybrid vehicles. Three of the systems have their origin in the control of material structure at the molecular level and the subsequent nanoengineering into useful device and components: aerocapacitors, nanostructure multilayer capacitors, and the lithium ion battery. The zinc-air battery is a high energy density battery which can provide vehicles with long range (400 km in autos) and be rapidly refueled with a slurry of zinc particles and electrolyte. The electromechanical battery is a battery-sized module containing a high-speed rotor integrated with an iron-less generator mounted on magnetic bearings and housed in an evacuated chamber.

Koopman, R.; Richardson, J.

1993-10-01T23:59:59.000Z

419

Market and behavioral barriers to energy efficiency: A preliminary evaluation of the case for tariff financing in California  

E-Print Network [OSTI]

Central Air Conditioners and Heat Pumps. ” Department ofrecent central air conditioner and heat pump purchasers only

Fujita, K. Sydny

2012-01-01T23:59:59.000Z

420

Delivering Energy Efficiency to Middle Income Single Family Households  

E-Print Network [OSTI]

water heater replacement, air conditioner Assumptions behindreplacements (e.g. , furnace, water heater, air conditioner,

Zimring, Mark

2012-01-01T23:59:59.000Z

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

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

E-Print Network [OSTI]

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

Fuller, Merrian C.

2011-01-01T23:59:59.000Z

422

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

E-Print Network [OSTI]

replacement, air conditioner replacement, solar thermalreplacement, air conditioner replacement, solar thermal

Fuller, Merrian C.

2011-01-01T23:59:59.000Z

423

Lesson 36: Housing and Accommodation  

E-Print Network [OSTI]

/ mikeka [air conditioner / air conditioners] [mat / mats] CHUMBA CHA KULA CHAKULA / CHUMBA CHA MAANKULI

424

Classroom Vocabulary Classroom Vocabulary [msamiati wa darasani  

E-Print Network [OSTI]

] [wall clock] [map / maps] [air conditioner / air conditioners] [picture / pictures] [drawing / drawings

425

E-Print Network 3.0 - advanced heat process Sample Search Results  

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

Heat Transfer Performance... ) Heat Transfer Solid Mechanics Energy Systems Air-Conditioner Performance Evaluations Alternate... and Diagnostic Center...

426

E-Print Network 3.0 - aerodynamic heating Sample Search Results  

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

COLLEGE OF ENGINEERING Research Areas Summary: ) Heat Transfer Solid Mechanics Energy Systems Air-Conditioner Performance Evaluations Alternate... and Diagnostic...

427

Considerations for Emerging Markets for Energy Savings Certificates  

E-Print Network [OSTI]

air conditioners; and insulation or other heating or cooling measures, such as HVAC system upgrades, ground source heat pumps,

Friedman, Barry

2009-01-01T23:59:59.000Z

428

Pollution Control in a Manufacturing System Stochastic Models for Analysis and Control of Air Pollution  

E-Print Network [OSTI]

Pollution Control in a Manufacturing System Stochastic Models for Analysis and Control of Air Pollution in a Manufacturing System Jan, 1, 2005 Technical Report SOPTL-05-01 Missouri University of Science models that can be used for controlling pollution in a manufacturing system. The models are developed

Gosavi, Abhijit

429

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

430

Modeling and control of an open accumulator Compressed Air Energy Storage (CAES) system for wind turbines q  

E-Print Network [OSTI]

Modeling and control of an open accumulator Compressed Air Energy Storage (CAES) system for wind compressed air energy storage. Maximizes energy production, levels load, downsizes electrical parts, meets presents the modeling and control for a novel Compressed Air Energy Storage (CAES) system for wind turbines

Li, Perry Y.

431

STUDY OF FROST GROWTH ON HEAT EXCHANGERS USED AS OUTDOOR COILS IN AIR SOURCE HEAT PUMP SYSTEMS  

E-Print Network [OSTI]

STUDY OF FROST GROWTH ON HEAT EXCHANGERS USED AS OUTDOOR COILS IN AIR SOURCE HEAT PUMP SYSTEMS OF FROST GROWTH ON HEAT EXCHANGERS USED AS OUTDOOR COILS IN AIR SOURCE HEAT PUMP SYSTEMS Dissertation . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 3.5.3 Air Side Heat Transfer Rates . . . . . . . . . . . . . . . . . . 43 3.5.4 Fluid Side Heat

432

AirTec System Co Ltd | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartmentAUDIT REPORTOpenWende NewSowitecAWSAgri-Energy LLCAir Energy GmbH JumpAirTec

433

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

E-Print Network [OSTI]

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

Bain, Joel Alan

1995-01-01T23:59:59.000Z

434

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

E-Print Network [OSTI]

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

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

2006-01-01T23:59:59.000Z

435

Proceedings of Healthy Buildings 2009 Paper 680 Do forced air HVAC systems have a role in healthy homes?  

E-Print Network [OSTI]

Proceedings of Healthy Buildings 2009 Paper 680 Do forced air HVAC systems have a role in healthy-extreme weather conditions. #12;Proceedings of Healthy Buildings 2009 Paper 680 Thus, a central forced air

Siegel, Jeffrey

436

An application of a meteorological data assimilation system to an air quality simulation  

SciTech Connect (OSTI)

The need to calculate air pollutant exposure metrics for longer time periods, i.e., seasonal and annual, has generated a need to conduct long-term simulations using regional-scale Eulerian air quality models. Hourly-resolved meteorological and micro-meteorological fields for an entire year are required as input to the air quality models. In this paper, the authors describe the application of a meteorological data assimilation system to provide high-quality fields to drive a regional air quality model. The process of assimilation blends multiple data sources (large-scale gridded data, surface and upper air observations, satellite imagery, and radar data) into a unified atmospheric representation. The authors have used an assimilation system developed at the Center for the Analysis and Prediction of Storms at the University of Oklahoma. The modeling domain covers most of North America and 1995 was chosen as the simulation year. The data used in the assimilation include the NCAR/NCEP global reanalysis fields combined with North American surface and radiosonde data. The authors will describe modifications made to the assimilation system to enable estimation of a number of air-quality related quantities not normally calculated, such as Monin-Obhukov length and friction velocity. While the system supports a state-of-the-art three-dimensional cloud and hydrometeor field analysis based on background fields, surface observations, satellite, and radar; a simpler approach was developed in this study to estimate cloud fractional coverage based on the gridded relative humidity values.

Moon, D.; Pai, P.

1999-07-01T23:59:59.000Z

437

Name of TMO ODSS1 ODSS2  

E-Print Network [OSTI]

Heating System Camera Window & Curtain LightFan Air Conditioner , , #12;Platform : Intel X86 /W indows XP /Windows 2000 Server CPU : Pentium 4-700MhzHome Server TMO Air Conditioner TMO Heater TMO Heater TMO Fan

Joo, Su-Chong

438

Air temperature thresholds for indoor comfort and perceived air quality  

E-Print Network [OSTI]

in the Netherlands, Indoor Air 2, 127 – 136. BuildingPaliaga, G. (2009) Moving air for comfort. ASHRAE Journal,ventilation system on perceived air quality, Indoor Air

Zhang, Hui; Edward, Arens; Pasut, Wilmer

2012-01-01T23:59:59.000Z

439

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

SciTech Connect (OSTI)

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

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

2011-01-01T23:59:59.000Z

440

Simulation of energy performance of underfloor air distribution (UFAD) systems  

E-Print Network [OSTI]

system represents a fan coil unit (FCU) system, consistingEnergy use intensity EUI Fan coil unit F CU HVAC electricityarea Fan powered terminal unit (with heating coil) used for

2009-01-01T23:59:59.000Z

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

Combined fuel and air staged power generation system  

SciTech Connect (OSTI)

A method and apparatus for generation of electric power employing fuel and air staging in which a first stage gas turbine and a second stage partial oxidation gas turbine power operated in parallel. A first portion of fuel and oxidant are provided to the first stage gas turbine which generates a first portion of electric power and a hot oxidant. A second portion of fuel and oxidant are provided to the second stage partial oxidation gas turbine which generates a second portion of electric power and a hot syngas. The hot oxidant and the hot syngas are provided to a bottoming cycle employing a fuel-fired boiler by which a third portion of electric power is generated.

Rabovitser, Iosif K; Pratapas, John M; Boulanov, Dmitri

2014-05-27T23:59:59.000Z

442

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

E-Print Network [OSTI]

ICEBO2006, Shenzhen, China HVAC Technologies for Energy Efficiency Vol.IV-2-1 Economical Analysis of the Cold Air Distribution System: A Case Study Jiancheng Zhao Limin Niu Zhe Zhou Juan Li Professor Postgraduate... and beverage. The 4th storey underground is the garage and goods and materials storehouse partly which is for people's air defense in wartime, the 3rd ICEBO2006, Shenzhen, China HVAC Technologies for Energy Efficiency Vol.IV-2-1 storey underground...

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

2006-01-01T23:59:59.000Z

443

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

444

Dynamics of Low-Pressure and High-Pressure Fuel Cell Air Supply System1  

E-Print Network [OSTI]

comparing the low pressure system with the high- pressure system equipped with a high-speed compressor pressure of the FC that is defined as the pressure at which the reactant hydrogen and oxygen (air) are delivered to the FC stack flow fields. In the case of stored compressed hydrogen the pressure of the cathode

Peng, Huei

445

Math!. Comput. Modelling Vol. 23, No. 11/12, pp. 55-76. 1996 Copyright@1996 Elsevier Science Ltd  

E-Print Network [OSTI]

control system is the heating and cooling system of a typical home. The furnace and air conditioner, along and the thermostat's response is translated back to electrical currents which control the furnace, air conditioner that translate into commands to turn on or off the furnace or the air conditioner. This work was partially

Lemmon, Michael

446

Recovering Energy with a Compressed Air System Program  

E-Print Network [OSTI]

but represent 26% of savings opportunity. ? Work that involves removal of instruments, instrument tubing or piping must be leak checked after system is re-energized. ? Equipment, systems and components can wear, so they must be leak checked with some routine...

Nipper, J.

2014-01-01T23:59:59.000Z

447

Calendar Year 2008 Program Benefits for ENERGY STAR Labeled Products  

E-Print Network [OSTI]

air cleaners Room air conditioners Scanners Servers Set-topBoilers • Central Air Conditioners and Air-Source HeatHeat Pump -Central Air Conditioner -Gas Furnace -Oil

Homan, GregoryK

2010-01-01T23:59:59.000Z

448

Research Statement of Hamsa Balakrishnan The air transportation system is a complex, global system that transports over 2.1 billion  

E-Print Network [OSTI]

is important because of the high costs of delays and pollution today, as well as the projected doubling in airResearch Statement of Hamsa Balakrishnan The air transportation system is a complex, global system that transports over 2.1 billion passengers each year. Air traffic delays have become a huge problem

Gummadi, Ramakrishna

449

Research Statement of Hamsa Balakrishnan The air transportation system is a large, complex, global system that transports over 2.1 billion  

E-Print Network [OSTI]

Research Statement of Hamsa Balakrishnan The air transportation system is a large, complex, global system that transports over 2.1 billion passengers each year. Air traffic delays have become a huge to the Joint Economic Committee of the US Senate, domestic air traffic delays in 2007 cost airlines over $19

450

Predictability of European air quality: Assessment of 3 years of operational forecasts and analyses by the PREV'AIR system  

E-Print Network [OSTI]

- ments are still needed to manage and control the impacts of air pollution on health. [3] Facing, is proved to improve ozone forecasts, especially when photochemical pollution episodes occur. The PREV'AIR and laws regarding the pollutants of utmost importance in relation to human health, air pollution is still

Menut, Laurent

451

Method and apparatus for operating a self-starting air heating system  

DOE Patents [OSTI]

A self-starting, fuel fired, air heating system including a fuel burner fired vapor generator, a turbine, and a condenser connected in a closed circuit such that the vapor output from the vapor generator is conducted to the turbine and then to the condenser where it is condensed for return to the vapor generator. The turbine drives an air blower which passes air over the condenser for cooling the condenser and heating the air. Also, a condensate pump is driven by the turbine. The disclosure is particularly concerned with a method and apparatus which on start-up prevents the vapor generator's vapor output from being conducted to the turbine until a predetermined pressure differential has been achieved. However, after the vapor flow is once permitted, it cannot again be prevented until after the fuel burner has been shut off and restarted.

Heinrich, Charles E. (Mentor, OH)

1983-12-06T23:59:59.000Z

452

Abstract--A novel compressed air energy storage system for wind turbine is proposed. It captures excess power prior to  

E-Print Network [OSTI]

Abstract-- A novel compressed air energy storage system for wind turbine is proposed. It captures instead of supply. Energy is stored in a high pressure dual chamber liquid-compressed air storage vessel components can be downsized for demand instead of supply. A novel Compressed Air Energy Storage (CAES

Li, Perry Y.

453

Controlled air injection for a fuel cell system  

DOE Patents [OSTI]

A method and apparatus for injecting oxygen into a fuel cell reformate stream to reduce the level of carbon monoxide while preserving the level of hydrogen in a fuel cell system.

Fronk, Matthew H. (Honeove Falls, NY)

2002-01-01T23:59:59.000Z

454

Cooling load differences between radiant and air systems  

E-Print Network [OSTI]

radiant heat transfer for cooling load calculation.heat gain is well recognized by cooling load calculationload calculation approach for radiant systems, Corgnati [17] also tackled the direct radiant heat

Feng, Jingjuan Dove; Schiavon, Stefano; Bauman, Fred

2013-01-01T23:59:59.000Z

455

Computation of Slow Invariant Manifolds for Hydrogen-Air Systems  

E-Print Network [OSTI]

· Summary #12;Introduction Motivation and background · Detailed kinetics are essential for accurate modeling systems · ILDM, CSP, and ICE-PIC are approximations of the reaction slow invariant manifold. · MEPT

456

Hydrazine engine start system air start performance and controls sizing  

SciTech Connect (OSTI)

Hydrazine has been used as an energy source in many applications to fuel in-flight main engine starting. In a current application, an existing hydrazine engine start system (ESS) design was adapted to meet new fuel control requirements. This paper presents a brief system description, historical context, and the motivating factors for the hydrazine controls changes and three case studies of controls design and analysis from the ESS program. 4 refs.

Johnson, A.T.

1992-01-01T23:59:59.000Z

457

A comparative assessment of alternative combustion turbine inlet air cooling system  

SciTech Connect (OSTI)

Interest in combustion turbine inlet air cooling (CTAC) has increased during the last few years as electric utilities face increasing demand for peak power. Inlet air cooling increases the generating capacity and decreases the heat rate of a combustion turbine during hot weather when the demand for electricity is generally the greatest. Several CTAC systems have been installed, but the general applicability of the concept and the preference for specific concepts is still being debated. Concurrently, Rocky Research of Boulder City, Nevada has been funded by the U.S. Department of Energy to conduct research on complex compound (ammoniated salt) chiller systems for low-temperature refrigeration applications.

Brown, D.R.; Katipamula, S.; Konynenbelt, J.H.

1996-02-01T23:59:59.000Z

458

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

E-Print Network [OSTI]

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

McNeil, Michael A.; Iyer, Maithili

2008-01-01T23:59:59.000Z

459

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

E-Print Network [OSTI]

chapter we discuss market, energy consumption and technologyeffective Room AC energy efficiency market transformation42 Chapter 3 Room AC Market and Energy Consumption

Shah, Nihar

2014-01-01T23:59:59.000Z

460

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

E-Print Network [OSTI]

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

Bode, Josh

2013-01-01T23:59:59.000Z

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

Analysis of Efficiency Standards for Air Conditioners, Heat Pumps, and Other Products  

Reports and Publications (EIA)

A series of analyses showing the impacts of each of the selected provisions of the bills on energy supply, demand, and prices, macroeconomic variables where feasible, import dependence, and emissions.

2002-01-01T23:59:59.000Z

462

An Analysis of Efficiency Improvements in Residential Sized Heat Pumps and Central Air Conditioners  

E-Print Network [OSTI]

LABORATORY NBS NATIONAL BUREAU OF STANDARDS NECPA NATIONAL ENERGY CONSERVATION POLICY ACT OEM ORIGINAL EQUIPMENT MANUFACTURERS ORNL OAK RIDGE NATIONAL LABORATORY PLF PART LOAD FACTOR SAI SCIENCE APPLICATION INCORPORATED SEER SEASONAL ENERGY EFFICIENCY RATIO... of variable speed units is discussed. The methodology includes: (1) making multiple runs of the Oak Ridge National Laboratory (ORNL) steady-state heat pump model, (2) making reasonable assumptions on the degradation factors, and (3) using a draft version...

O'Neal, D. L.; Boecker, C. L.; Penson, S. B.

1986-01-01T23:59:59.000Z

463

E-Print Network 3.0 - air conditioners Sample Search Results  

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

Majid - School of Engineering Science, Simon Fraser University Collection: Engineering ; Energy Storage, Conversion and Utilization 2 T H E U N I V E R S I T Y O F C H I C A G O C...

464

E-Print Network 3.0 - air conditioner units Sample Search Results  

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

Majid - School of Engineering Science, Simon Fraser University Collection: Engineering ; Energy Storage, Conversion and Utilization 2 T H E U N I V E R S I T Y O F C H I C A G O C...

465

China Energy Efficiency Round Robin Testing Results for Room Air Conditioners  

E-Print Network [OSTI]

decrease in energy consumption per unit GDP in the "Eleventh40-50% reduction in energy consumption per unit GDP by 2020measured by energy consumption per unit GDP in the “The 11th

Zhou, Nan

2010-01-01T23:59:59.000Z

466

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

E-Print Network [OSTI]

measurements using smart meter household data produce theof program households. Smart meters lower the cost of usingsample sizes with smart meter data can be far larger than

Bode, Josh

2013-01-01T23:59:59.000Z

467

China Energy Efficiency Round Robin Testing Results for Room Air Conditioners  

E-Print Network [OSTI]

further passed the Energy Efficiency (Labeling of Products)must be marked with an energy efficiency label informingconsumers of the energy efficiency level of related

Zhou, Nan

2010-01-01T23:59:59.000Z

468

Five ENERGY STAR Room Air Conditioners Fail Testing | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeat PumpRecordFederal Registry CommentsOverview »FINDINGDepartmentFive ENERGY STAR

469

DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomenthe HouseStudents2.2at MultipleorderNuclearThis fact sheetHeat Pump Models Shown

470

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

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomentheATLANTA, GA - U.S. Department of Energy Secretary StevenDeploymentForms

471

Tips for Running an Air Conditioner Without Breaking the Bank | Department  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmittedStatusButler Tina Butler Tina-Butler.jpg Tina L. P.nuclearTipsof

472

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

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists'Montana. DOCUMENTSof Energy DOEDOEAVAILABLEDepartment ofHeldViolating Minimum

473

DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Deliciouscritical_materials_workshop_presentations.pdf MoreProgram |DOEInfrastructure Working420.1B FACILITYHeat

474

China Energy Efficiency Round Robin Testing Results for Room Air Conditioners  

E-Print Network [OSTI]

was maybe tested with less refrigerant charge than in China.Differences in the refrigerant charges are not confirmed byvacuum treatment, charge 850g±5g R22 refrigerant for sample

Zhou, Nan

2010-01-01T23:59:59.000Z

475

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

E-Print Network [OSTI]

Ernest Orlando Lawrence Berkeley National Laboratory. LBNL-2008. Ernest Orlando Lawrence Berkeley National Laboratory.Ernest Orlando Lawrence Berkeley National Laboratory. LBNL-

Bode, Josh

2013-01-01T23:59:59.000Z

476

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

E-Print Network [OSTI]

1986.Priceeffectsofenergy-efficient technologies—a study ofSAITO et al] EDR, “Technology Overview: Economizers”, Energyresources/publications/technology-overviews/technology-

Shah, Nihar

2014-01-01T23:59:59.000Z

477

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

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergy Cooperation | Department ofEnergy IsTestimonials WorkerDepartmentHouse ofEnergy

478

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

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists' Research |Regulation Services2014 UpdateTeach-Ins | Department of Energy|

479

Impact analysis of a flexible air transportation system  

E-Print Network [OSTI]

-OR), School of Architecture, Civil and Envi- ronmental Engineering (ENAC), Ecole Polytechnique F´ed´erale de)1 . Consequently, sustainability of current transportation systems is threat- ened by increased energy consumption, re- sulting in frequent congestion and delays. The trade-off between the sustainability

Bierlaire, Michel

480

A diagnostic system for air brakes in commercial vehicles  

E-Print Network [OSTI]

to maintenance and hence they require frequent inspections. Current inspection techniques require an inspector to go underneath a vehicle to check the brake system for possible faults, such as leaks, worn brake pads, out-of-adjustment of push rods, etc...

Coimbatore Subramanian, Shankar Ram

2007-09-17T23:59:59.000Z

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

Alternate Air Delivery Systems for Hot and Humid Climates  

E-Print Network [OSTI]

Carter & Burgess first began using triple deck multi-zone units, in place of traditional VAV systems, on the Texas State Capitol restoration. Since the completion of that project design in early 1991, our firm has now used triple deck multi...

Wallace, M.

1996-01-01T23:59:59.000Z

482

A Wireless Differential Protection System for Air-Core Inductors  

E-Print Network [OSTI]

of these medium voltage (MV) inductors is relatively simple by comparison where most are typically designed as dry-type, Inductors, Transformers, Communication systems. I. Introduction Distributed capacitance in AC transmission inductors on the tertiary side of a step-down transformer or auto- transformer [2]. The construction

Brown III, Donald R.

483

Development of standardized air-blown coal gasifier/gas turbine concepts for future electric power systems  

SciTech Connect (OSTI)

The objective of this study is to develop standardized air blown fixed bed gasification hot gas cleanup integrated gasifier combined cycle (IGCC) systems.

Sadowski, R.S.; Brown, M.J.; Hester, J.C.; Harriz, J.T.; Ritz, G.J.

1991-02-01T23:59:59.000Z

484

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

E-Print Network [OSTI]

??The potential of static pressure reset (SPR) control to save fan energy in variable air volume HVAC systems has been well documented. Current research has… (more)

Kimla, John

2010-01-01T23:59:59.000Z

485

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

E-Print Network [OSTI]

the air conditioners were controlled. The local control device and the direct control device were both found to reduce demand of the compressor by about 0.65 kW at 100°F ambient temperature. Also, the kW reduction achieved was found to increase with higher...

Schneider, K.; Thedford, M.

1986-01-01T23:59:59.000Z

486

Direct Expansion Air Conditioning System Selection for Hot & Humid Climates  

E-Print Network [OSTI]

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

Browning, B. K.

2002-01-01T23:59:59.000Z

487

Free Air CO2 Enrichment (FACE) Data Management System  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

The DOE Biological and Environmental Research Program (BER) is responsible for four "core" FACE sites and projects. These are known as Aspen FACE, Duke FACE, ORNL FACE, and Nevada Deseret FACE. Brookhaven provides operational support to some of these sites, while The FACE Data Management System at ORNL and CDIAC serves as a data repository. In addition, DOE supports OTC experiments in conjunction with the Smithsonian Environmental Research Center (SERC) in Maryland and Florida. There are also FACE experiments ongoing in other countries. [Quoted from the home page of the FACE Data Management System and other pages within the web site.] The FACE Data Management System at ORNL provides links to all the FACE and SERC sites and to the data (both the data archived at CDIAC and data still residing on site-specific pages). Users are also given in-depth information on the concept, provided with a full, linked list of international projects, and guided to related research. The FACE projects were part of the CO2 research network fostered by the Global Change and Terrestrial Ecosystems core project of the International Geosphere-Biosphere Programme. Results from the experiment contribute to the Terrestrial Ecosystem Response to Atmospheric and Climatic Change (TERACC) project, a 5-year initiative integrating experimental data and global change modeling.

488

Thermal decay in underfloor air distribution (UFAD) systems: Fundamentals and influence on system performance  

E-Print Network [OSTI]

zones. Variable-speed fan coil units ( FCU) supply air tounit (AHU) including an economizer, chilled water cooling coil, hot water heating coil and supply fan.

Lee, Kwang Ho; Schiavon, Stefano; Bauman, Fred; Webster, Tom

2012-01-01T23:59:59.000Z

489

Thermal decay in underfloor air distribution (UFAD) systems: Fundamentals and influence on system performance  

E-Print Network [OSTI]

a comparison of room cooling load and supply air to roomtemperatures, cooling load profiles, supply airflow rate,water cooling coil, hot water heating coil and supply fan.

Lee, Kwang Ho; Schiavon, Stefano; Bauman, Fred; Webster, Tom

2012-01-01T23:59:59.000Z

490

2102, Page 1 Experimental Investigation of Closed Loop Oscillating Heat Pipe as the  

E-Print Network [OSTI]

pipe (CLOHP) as the condenser for a vapor compression refrigeration system. Split type air conditioner condenser in the split type air conditioner. The refrigeration capacity was set at 12,500 Btu/h (3.663 k is commonly used in a wide range of residential and commercial buildings. Most of the air conditioner types

Ghajar, Afshin J.

491

1 Copyright 2007 by ASME Proceedings of IMECE 2007  

E-Print Network [OSTI]

EFFECTS ON AIR-CONDITIONER PERFORMANCE Matthew J. Sitzmann Haag Engineering, Co. 2455 McIver Lane.S.A. ssmith@haagengineering.com ABSTRACT Experiments demonstrated the effects on air-conditioner system-type air-conditioners were tested. Flattening substantial areas of the fins caused a reduc- tion

Texas at Arlington, University of

492

Building Pressure Control in VAV System with Relief Air Fan  

E-Print Network [OSTI]

, recently, Wang and Liu developed a motor power based fan airflow station., which determines the fan airflow using the measured fan motor power, the fan speed or control system command to VFD, and the in-situ fan motor power curve. Since the fan power... power can be obtained directly from VFD [5]. The motor power based fan airflow station method can be applied to the fan-tracking to perform a better building pressurization. The theory of the motor power based fan airflow station can be referred...

Pang, X.; Liu, M.; Zheng, B.

2005-01-01T23:59:59.000Z

493

Three-wheel air turbocompressor for PEM fuel cell systems  

DOE Patents [OSTI]

A fuel cell system comprises a compressor and a fuel processor downstream of the compressor. A fuel cell stack is in communication with the fuel processor and compressor. A combustor is downstream of the fuel cell stack. First and second turbines are downstream of the fuel processor and in parallel flow communication with one another. A distribution valve is in communication with the first and second turbines. The first and second turbines are mechanically engaged to the compressor. A bypass valve is intermediate the compressor and the second turbine, with the bypass valve enabling a compressed gas from the compressor to bypass the fuel processor.

Rehg, Tim; Gee, Mark; Emerson, Terence P.; Ferrall, Joe; Sokolov, Pavel

2003-08-19T23:59:59.000Z

494

ALTERNATE HIGH EFFICIENCY PARTICULATE AIR (HEPA) FILTRATION SYSTEM  

SciTech Connect (OSTI)

In Phase IIA of this project, CeraMem has further developed and scaled up ceramic HEPA filters that are appropriate for use on filtration of vent gas from HLW tanks at DOE sites around the country. This work included procuring recrystallized SiC monoliths, developing membrane and cement materials, and defining a manufacturing process for the production of prototype full sizes HEPA filters. CeraMem has demonstrated that prototype full size filters can be manufactured by producing 9 full size filters that passed DOP aerosol testing at the Oak Ridge Filter Test Facility. One of these filters was supplied to the Savannah River Technical Center (SRTC) for process tests using simulated HLW tank waste. SRTC has reported that the filter was regenerable (with some increase in pressure drop) and that the filter retained its HEPA retention capability. CeraMem has also developed a Regenerable HEPA Filter System (RHFS) design and acceptance test plan that was reviewed by DOE personnel. The design and acceptance test plan form the basis of the system proposal for follow-on work in Phase IIB of this project.

Bruce Bishop; Robert Goldsmith; Karsten Nielsen; Phillip Paquette

2002-08-16T23:59:59.000Z

495

Duct System Flammability and Air Sealing Fire Separation Assemblies in the International Residential Code  

SciTech Connect (OSTI)

IBACOS identified two barriers that limit the ability of builders to cost-effectively achieve higher energy efficiency levels in housing. These are (1) the use of duct system materials that inherently achieve airtightness and are appropriately sized for low-load houses and (2) the ability to air seal fire separation assemblies. The issues identified fall into a gray area of the codes.

Rudd, A.; Prahl, D.

2014-12-01T23:59:59.000Z

496

Mechanical Air Distribution Interactions with the House System in Hot and Humid Climates  

E-Print Network [OSTI]

and the resulting air flows that are occurring in our homes. These powerful driving forces or pressures are caused by the fans in HVAC systems and venting appliances. Other contributory factors are today's tight building envelopes. door closure and badly leaking...

Garrett, D. A.

1994-01-01T23:59:59.000Z

497

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

498

MAQS: A Personalized Mobile Sensing System for Indoor Air Quality Monitoring  

E-Print Network [OSTI]

quality (IAQ) influences human health, safety, productivity, and comfort. This paper describes MAQS, a personalized mobile sensing system for IAQ monitoring. In contrast with existing stationary or out- door air personalized IAQ information. To improve accuracy and energy efficiency, MAQS incorporates three novel

Dick, Robert

499

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.

500

How to Substantially Reduce the Biggest Energy Wasters in Compressed Air Systems  

E-Print Network [OSTI]

will vary from $2,190 per year to vortex type to $438 per year top heated pipe. A full treatment of the subject is available in the book ENERGY SAVINGS IN COMPRESSED AIR SYSTEMS, authored by Hank van Ormer, Air Power USA Inc. As much as 75% to 80...% energy savings are available by prudent selection and application of cabinet coolers. OPEN BLOWS Open blows in various material moving processes offer exceptional energy conservation opportunities Often times we find 1/4" open tubes blowing...

Kemp, H. L.

2005-01-01T23:59:59.000Z