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In situ measurement methods of air to air heat pump performance.

Author(s) : TRAN C. T., RIVIÈRE P., MARCHIO D., et al.

Type of article: Article, IJR article

Summary

There is no in situ reliable measurement method of air-to-air heat pump heating performances. This paper tests and validates two methods in laboratory and in steady-state conditions. The first method based on refrigerant fluid measurements determines the refrigerant flow rate by using the compressor thermal balance. In particular, the evaporation pressure is measured by a saturation temperature measurement and the compressor ambient heat losses are evaluated from the heat exchanges. The method uses only non-intrusive sensors, except for the condensation pressure sensor installed at the refrigerant charging plug. The second method based on air measurements determines the air flow rate via a multi-point velocity measurement. According to the experimental results, these methods are fully applicable on field with deviations of 4% and 10%, for the refrigerant method and the air method respectively, when compared to the “etalon” measurement.

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Pages: 1442-1455

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Details

  • Original title: In situ measurement methods of air to air heat pump performance.
  • Record ID : 30008130
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 36 - n. 5
  • Publication date: 2013/08

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