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Performance analysis on a solar-powered air-cooled two-stage ejector refrigeration system with ammonia as refrigerant at cold storage.

[In Chinese. / En chinois.]

Author(s) : CHEN H., LU W., QIN W., et al.

Type of article: Article

Summary

By the establishment of a mathematical model on a solar-powered air-cooled two-stage ejector refrigerat ion system using ammonia as refrigerant, the performance of ejector refrigeration system with rated refrigeration capacity of 9.4 kW for cold store was analyzed. The refrigeration capacity of the proposed system increases with the rising of cold storage temperature and the enhancement of solar irradiance, while decreases with the rising of ambient temperature. The COP has similar changing trend with that of the refrigeration capacity except that it increases rapidly with the enhancement of solar irradiance firstly and then become stable after solar irradiance exceeding a certain value. The refrigeration capacity is 6.3-26kW and the COP 0.042-0.087 under the normal operating conditions with cold storage temperature over 4°C, ambient temperature below 38°C and solar irradiance surpassing 500 W/m2. The proposed system can match the climatic conditions in fruits and vegetables harvest season of Nanning, a typical city in subtropical zone.

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Pages: 34-38

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Details

  • Original title: [In Chinese. / En chinois.]
  • Record ID : 30003120
  • Languages: Chinese
  • Source: Journal of Refrigeration - n. 140
  • Publication date: 2011/08

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