A novel type solar assisted heat pump using a low GWP refrigerant (R-1233zd(E)) with the flexible solar collector

Seung Joo Lee, Byung Hoon Shon, Chung Woo Jung, Yong Tae Kang

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Low GWP refrigerants have been extensively paid attention to solve the environmental problems. Meanwhile, the integration of systems such as a solar assisted heat pump has been also developed consistently to compensate shortcomings of individual systems and enhance the efficiency of the system. In this study, the performance of the novel type solar assisted heat pump system using a low GWP refrigerant (R-1233zd(E)) with the flexible solar collector is investigated by experiments. R-1233zd(E) is a low GWP refrigerant with GWP lower than 7.0. The performance of solar assisted heat pump system using R-1233zd(E) is firstly compared with that using R-134a. From the study, it is found that the flexible solar collector shows the average efficiency of 40% irrespective of the weather conditions. In addition, high performance of the solar assisted heat pump using R-1233zd(E) is obtained by controlling the mass flow rate and heat source temperature. Finally, although the heat capacity of the solar assisted heat pump using R-1233zd(E) is lower than that with R-134a at same conditions, COP of the system using R-1233zd(E) shows a higher value due to low power consumption rate compared to that using R-134a.

Original languageEnglish
Pages (from-to)386-396
Number of pages11
JournalEnergy
Volume149
DOIs
Publication statusPublished - 2018 Apr 15

Keywords

  • COP
  • Flexible solar collector
  • Low GWP refrigerant
  • Power consumption rate
  • R-1233zd(E)
  • Solar assisted heat pump

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Pollution
  • Energy(all)
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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