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Performance analysis of a vapour compression heat pump and a hybrid heat pump using ammonia/water.

[ In Korean. / En coréen.]

Author(s) : JEONG S., YUN H. G., PARK K., et al.

Summary

Hybrid heat pumps, which combine the vapour compression and absorption heat pump cycle, can efficiently be used to produce hot water of 80-90°C from the low temperature around 50°C. In this study, the performance of a hybrid heat pump (HHP) is compared with a conventional vapour compression heat pump (VCHP) using the engineering equation solver. At the same operation condition, the HHP showed about 17% higher COP than the VCHP because of the more effective heat transfer using temperature glide in the absorber and desorber. Moreover, the maximum pressure of the HHP is about 1/3 of that of the VCHP. The COPs of both systems are increased with the increase of UA-values. The heat output of the HHP is also increased as the UA-values are increased. However, that of the VCHP is rather decreased.

Details

  • Original title: [ In Korean. / En coréen.]
  • Record ID : 2009-1309
  • Languages: Korean
  • Source: The 3rd Korean Congress of Refrigeration.
  • Publication date: 2009/03/19

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