Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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Operating characteristics of 3RT heat pumps

  • Moon, Chang-Uk (Graduate school of Refrigeration and Air-conditioning Engineering, Pukyong National University) ;
  • Choi, Kwang-Hwan (Department of Refrigeration and Air-conditioning Engineering, Pukyong National University) ;
  • Yoon, Jung-In (Department of Refrigeration and Air-conditioning Engineering, Pukyong National University) ;
  • Jeon, Min-Ju (Department of Refrigeration and Air-conditioning Engineering, Pukyong National University) ;
  • Heo, Seong-Kwan (Graduate school of Refrigeration and Air-conditioning Engineering, Pukyong National University) ;
  • Sung, Yo-Han (Graduate school of Refrigeration and Air-conditioning Engineering, Pukyong National University) ;
  • Park, Sung-Hyeon (Graduate school of Refrigeration and Air-conditioning Engineering, Pukyong National University) ;
  • Lee, Jin-Kook (Department of Refrigeration and Air-conditioning Engineering, Pukyong National University) ;
  • Son, Chang-Hyo (Department of Refrigeration and Air-conditioning Engineering, Pukyong National University)
  • Received : 2016.11.25
  • Accepted : 2017.02.27
  • Published : 2017.02.28
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Abstract

Newly designed vapor-injection heat pumps have been proposed and analyzed in the present study. An economizer-type vapor-injection (V-I) system has been employed as the standard system because of its reliability and simple control method. The V-I system has a re-cooler and re-heater for cooling and heating, respectively. Solar panels have been installed in the V-I heat pump as well as in the re-heater in order to enhance heating capacity and performance. R410A has been employed as a working fluid and performance analysis has been conducted under various conditions. Results are summarized as follows: (1) The V-I system with the re-cooler yielded a marginally higher coefficient of performance (COP) than the conventional V-I refrigeration system. (2) By increasing the re-cooler cooling capacity, enhanced system performance as compared to the conventional V-I system was observed. (3) The re-heater negatively affected the system performance; hence, the V-I heat pump with the re-heater yielded a lower COP than that of the conventional V-I heat pump used for heating. (4) Although the solar panels increased the system performance, this increase could not offset performance degradation by the re-heater.

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References

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