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Describes an investigation of a propane/isobutane (R290/R600a) mixture in domestic refrigerators. Notes the instrumentation and gives the test results. Finds that, compared to R12, the mixture showed a 3% to 4% increase in energy efficiency and a faster cooling rate, a shorter compressor on-time and flow compressor dome temperatures. Concludes that the mixture seems to be an appropriate candidate to replace R12 from the viewpoint of energy conservation.

KEYWORDS: year 1996, Refrigeration, refrigerants R12, R290, R600a, mixtures, comparing, refrigerators, domestic, experiment, performance, energy conservation, measuring, hydrocarbons

Citation: Symposium Papers, Atlanta, GA, 1996