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The evaluation method for performance of a split air-conditioning system based on the compressor mass flow rate.

Number: pap. P15

Author(s) : WAKAHARA T., KAMETANI S.

Summary

This paper deals with the actual performance evaluation method of a split air-conditioning system based on characteristics curve of the compressor mass flow rate. Generally, it is very difficult to evaluate the actual performance of a split air-conditioning system, because the heat flux in an air blow unit is very complicated, measurement of the temperature and wind velocity is very difficult. Then, the authors examined how to evaluate performance, from both of the enthalpy difference and the refrigerant mass flow rate which circulate through a system. The test unit was a gas engine-driven heat pump split air-conditioning system. Regression equations for refrigerant mass flow rate were obtained based on characteristic curve of the scroll compressor. Cooling and heating capacity were given by multiplying the approximated mass flow rate by the differential of enthalpy pass the refrigerant piping mean the inside machine. The relative errors with approximated and measured values of the refrigerant mass flow rate are within 10%.

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Pages: 8 p.

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Details

  • Original title: The evaluation method for performance of a split air-conditioning system based on the compressor mass flow rate.
  • Record ID : 30000611
  • Languages: English
  • Source: Measures to address climate change. 2010 International Symposium on Next-generation Air Conditioning and Refrigeration Technology: February 17-19, Tokyo, Japan.
  • Publication date: 2010/02/17

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