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Analysis on the performance degradation for residential air conditioner.

Author(s) : ZHENG B., LIANG X.

Summary

The performance of a residential air conditioner will be degraded when outdoor temperature increases for cooling and decreases for heating. In this study, the cooling and heating performances of a residential air-conditioner system were experimentally investigated by varying outdoor temperature. The experimental results showed that the cooling capacity decreased and the heating capacity increased with the increase of outdoor temperature. For cooling, when the outdoor temperature rose from 35°C DB/24°C WB to 48°C DB/30°C WB, the cooling capacity decreased by 17.81%. For heating, when the outdoor temperature dropped from 7°C DB /6°C WB to -15°C DB/RH75%, the heating capacity decreased by 50.93%. These were mainly due to the cooling capacity per unit quality, i.e. the enthalpy difference, decreased with the increase of outdoor temperature and the mass displacement of compressor decreased with the decrease of outdoor temperature.

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Details

  • Original title: Analysis on the performance degradation for residential air conditioner.
  • Record ID : 2010-2006
  • Languages: English
  • Publication date: 2010/07/12
  • Source: Source: Proc. 2010 int. Refrig. Air Cond. Conf., Purdue Univ.
    n. 2151; 5 p.; fig.; tabl.; 2 ref.

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