Global warming implications of non-fluorocarbon technologies as CFC replacements

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Many technologies could be developed for use in place of conventional compression systems for refrigeration and air conditioning. Comparisons of the global warming impacts using TEWI (Total Equivalent Warming Impact) can be used to identify alternatives that have the potential for lower environmental impacts than electric-driven vapor compression systems using HCFCs and HFCs. Some options, such as secondary heat transfer loops in commercial refrigeration systems to reduce refrigerant charge and emission rates, could be useful in reducing the losses of refrigerants to the atmosphere. Use of ammonia instead of a fluorocarbon in a system with a secondary loop offers only ... continued below

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9 p.

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Fischer, S.K. & Tomlinson, J.J. December 31, 1993.

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Description

Many technologies could be developed for use in place of conventional compression systems for refrigeration and air conditioning. Comparisons of the global warming impacts using TEWI (Total Equivalent Warming Impact) can be used to identify alternatives that have the potential for lower environmental impacts than electric-driven vapor compression systems using HCFCs and HFCs. Some options, such as secondary heat transfer loops in commercial refrigeration systems to reduce refrigerant charge and emission rates, could be useful in reducing the losses of refrigerants to the atmosphere. Use of ammonia instead of a fluorocarbon in a system with a secondary loop offers only a small potential for decreasing TEWI, and this may not warrant the increased complexity and risks of using ammonia in a retail sales environment. A few technologies, such as adsorption heat pumps, have efficiency levels that show reduced TEWI levels compared to conventional and state of the art compression systems, and further development could lead to an even more favorable comparison. Health and safety risks of the alternative technologies and the materials they employ must also be considered.

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9 p.

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OSTI as DE96010635

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  • Annual winter meeting of the American Society of Mechanical Engineers, New Orleans, LA (United States), 28 Nov - 3 Dec 1993

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  • Other: DE96010635
  • Report No.: CONF-931121--40
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 242617
  • Archival Resource Key: ark:/67531/metadc665921

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Office of Scientific & Technical Information Technical Reports

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  • December 31, 1993

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  • June 29, 2015, 9:42 p.m.

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  • Jan. 22, 2016, 11:12 a.m.

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Fischer, S.K. & Tomlinson, J.J. Global warming implications of non-fluorocarbon technologies as CFC replacements, article, December 31, 1993; Tennessee. (digital.library.unt.edu/ark:/67531/metadc665921/: accessed June 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.