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Experimental study on match of indoor and outdoor heat exchanger of residential air conditioner.

Number: pap. 2185

Author(s) : TU X., LIANG X., ZHUANG R.

Summary

In this study, the cooling and heating performance of residential air-conditioner system varying with the match of indoor and outdoor heat exchanger were measured and analyzed by changing the indoor unit air flow rate and heat exchanger, and outdoor unit air flow rate. Increase of both indoor unit and outdoor unit were beneficial for the cooling capacity and heating capacity, however, the EER and COP showed a trend of increasing slowly even decreasing after the first rapid increase. The air-conditioner system performance improvement was increased more significantly with increase of indoor unit compared to that of outdoor unit due to constantly smaller indoor unit matched with larger outdoor unit. The heat transfer area of the indoor unit was a more dominant factor affecting system performance than that of air flow rate especially under cooling mode. The maximum increase of cooling capacity, EER, heating capacity and COP with increasing indoor unit including heat transfer area and air flow rate were 35.3%, 24%, 10.4% and 29.9%, respectively. About 40% increase of outdoor unit air flow rate showed only 0.6%, 4.6% and 1.2% improvement for cooling capacity, EER and heating capacity, respectively, while the COP had about 0.7% decrease. Among the systems investigated and compared in this study, the heat transfer area ratio of indoor unit and outdoor unit should not be exceed 0.37, and the average air face velocity should not exceed 1.2m/s for the indoor unit and 1.6m/s for the outdoor unit.

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Pages: 8 p.

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Details

  • Original title: Experimental study on match of indoor and outdoor heat exchanger of residential air conditioner.
  • Record ID : 30013385
  • Languages: English
  • Source: 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2014/07/14

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