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Theoretical study on a frost-free household refrigerator-freezer.

Author(s) : ZHANG L., FUJINAWA T., SAIKAWA M.

Type of article: Article, IJR article

Summary

This study deals with a frost-free household refrigerator-freezer, in which frosting can be retarded by dehumidifying the air before it enters the evaporator of the refrigerator-freezer via a desiccant-coated heat exchanger. Because the desiccant can be regenerated via the condensation heat of the refrigerant (which is exhausted into ambient air in conventional household refrigerator-freezers), the proposed system can achieve high energy efficiency. Calculations show that the coefficient of performance of this system (COP) is within the range 1.5–2.5 at an ambient temperature of 15–35?°C. Moreover, it is found that the relative humidity of the refrigerator air (RHRA) and the temperature of freezer air (TFA) have a significant effect on COP: COP decreases by about 13% when RHRA varies from 0.4 to 0.8 and by 10% when TFA runs from -18 to -23?°C.

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Pages: 60-71

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Details

  • Original title: Theoretical study on a frost-free household refrigerator-freezer.
  • Record ID : 30016711
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 62
  • Publication date: 2016/02

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