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Effects of non-condensable gases equipped with a non-adiabatic capillary tube in domestic refrigerator.

Author(s) : KIM D., HWANG Y., LEE J. K., et al.

Summary

The effect of non-condensable gases on a refrigerating circuit has been investigated for a general refrigerator. The molar fraction of non-condensable gases was varied by controlling the injection amount of dry air into the refrigerating circuit. Both energy consumption and continuous running tests for the refrigerator were conducted under the various amounts of non-condensable gases. The tested refrigerating circuit was the general household refrigerator with a suction gas heat exchanger. As the molar fraction of non-condensable gases was increased from 0 to 1.46%, the amount of energy consumption was found to increase up to 25%. The increase of the amount of non-condensable gases in refrigerating circuit was found to result in increasing the condensation temperature at the condenser and decreasing the evaporation temperature at the evaporator, which were presumably caused by the low specific heat and increased partial pressure of dry air (i.e. non-condensable gas). Also, the characteristics of the refrigerating circuit as a function of the amount of non-condensable gases were analyzed by a pressure-specific enthalpy diagram.

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Pages: ICR07-B2-1583

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Details

  • Original title: Effects of non-condensable gases equipped with a non-adiabatic capillary tube in domestic refrigerator.
  • Record ID : 2008-0154
  • Languages: English
  • Source: ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Publication date: 2007/08/21

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