Comparison of global warming impacts of automobile air-conditioning concepts

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The global warming impacts of conventional vapor compression automobile air conditioning using HFC-134a are compared with the potential impacts of four alternative concepts. Comparisons are made on the basis of total equivalent warming impact (TEWI) which accounts for the effects of refrigerant emissions, energy use to provide comfort cooling, and fuel consumed to transport the weight of the air conditioning system. Under the most favorable assumptions on efficiency and weight, transcritical compression using CO{sub 2} as the refrigerant and adsorption cooling with water and zeolite beds could reduce TEWI by up to 18%rlative to HFC-134a compression air conditioning. Other assumptions ... continued below

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10 p.

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Creator: Unknown. December 31, 1995.

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Description

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

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10 p.

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OSTI as DE96005362

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  • 6. annual international CFC and halon alternatives conference: stratospheric ozone protection for the 90`s, Washington, DC (United States), 23-25 Oct 1995

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  • Other: DE96005362
  • Report No.: CONF-9510121--4
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 204715
  • Archival Resource Key: ark:/67531/metadc668753

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  • December 31, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Jan. 21, 2016, 6:51 p.m.

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Comparison of global warming impacts of automobile air-conditioning concepts, article, December 31, 1995; Tennessee. (digital.library.unt.edu/ark:/67531/metadc668753/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.