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Performance evaluation of a two-stage compression heat pump system with refrigerant charge and EEV opening.

Author(s) : PARK C., KANG H., KIM Y., et al.

Summary

A heat pump system using river water as a heat source operated in a single-stage cycle for the cooling and two-stage cycle for the heating to optimize system performance. The use of the two-stage compression cycle in the heating mode can improve system performance and reliability because the temperature difference between the heat source and the hot water temperature supplied for the heating is relatively large. The objective of this study is to investigate the effects of refrigerant charge on the performance of the two-stage heat pump. The experiments were carried out by varying refrigerant charge in both the cooling and heating modes. The performance of the two-stage heat pump was 23% higher than that of the conventional refrigeration system that used atmospheric air as the heat source.

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Details

  • Original title: Performance evaluation of a two-stage compression heat pump system with refrigerant charge and EEV opening.
  • Record ID : 2007-2296
  • Languages: English
  • Source: 2006 Purdue Conferences. 18th International Compressor Engineering Conference at Purdue & 11th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
  • Publication date: 2006/07/17

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