Performance comparison of heat pumps using low global warming potential refrigerants with optimized heat exchanger designs

Byeongsu Kim; Sang Hun Lee; Dong Chan Lee; Yongchan Kim

doi:10.1016/j.applthermaleng.2020.114990

Performance comparison of heat pumps using low global warming potential refrigerants with optimized heat exchanger designs

Byeongsu Kim, Sang Hun Lee, Dong Chan Lee, Yongchan Kim

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

The objective of this study is to analyze the performance improvement of heat pumps with low global warming potential (GWP) refrigerants over conventional R-410A heat pumps by optimizing the heat exchanger designs. A simulation model is developed for heat pumps with low GWP refrigerants and validated by comparing the predicted and measured data for R-410A and R-32. Based on the developed model, the diameter of the tube and the number of paths in the indoor and outdoor heat exchangers are optimized for each alternative refrigerant using the genetic algorithm. The performances of the optimized heat pumps with the low GWP refrigerants are compared with that of the R-410A heat pump to provide a selection guide for alternative refrigerants. The average performance improvements of the heat pumps with optimized heat exchanger designs were estimated to be 6.0%, 3.4%, and 2.4% for R-32, DR-5, and L-41a, respectively, compared with that of the baseline system. Thus, the R-32 heat pump delivered the highest performance improvement with the optimized heat exchanger designs.

Original language	English
Article number	114990
Journal	Applied Thermal Engineering
Volume	171
DOIs	https://doi.org/10.1016/j.applthermaleng.2020.114990
Publication status	Published - 2020 May 5

Bibliographical note

Funding Information:
This work was supported by a grant from the Energy Technology Development Program (No. 20172020108580) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by the Ministry of Trade, Industry & Energy, Republic of Korea.

Funding Information:
This work was supported by a grant from the Energy Technology Development Program (No. 20172020108580) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by the Ministry of Trade, Industry & Energy , Republic of Korea.

Publisher Copyright:
© 2020 Elsevier Ltd

Keywords

Alternative refrigerant
Heat exchanger design
Heat pump
Low GWP
Performance improvement

ASJC Scopus subject areas

Energy Engineering and Power Technology
Industrial and Manufacturing Engineering

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10.1016/j.applthermaleng.2020.114990

Cite this

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abstract = "The objective of this study is to analyze the performance improvement of heat pumps with low global warming potential (GWP) refrigerants over conventional R-410A heat pumps by optimizing the heat exchanger designs. A simulation model is developed for heat pumps with low GWP refrigerants and validated by comparing the predicted and measured data for R-410A and R-32. Based on the developed model, the diameter of the tube and the number of paths in the indoor and outdoor heat exchangers are optimized for each alternative refrigerant using the genetic algorithm. The performances of the optimized heat pumps with the low GWP refrigerants are compared with that of the R-410A heat pump to provide a selection guide for alternative refrigerants. The average performance improvements of the heat pumps with optimized heat exchanger designs were estimated to be 6.0%, 3.4%, and 2.4% for R-32, DR-5, and L-41a, respectively, compared with that of the baseline system. Thus, the R-32 heat pump delivered the highest performance improvement with the optimized heat exchanger designs.",

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author = "Byeongsu Kim and Lee, {Sang Hun} and Lee, {Dong Chan} and Yongchan Kim",

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N2 - The objective of this study is to analyze the performance improvement of heat pumps with low global warming potential (GWP) refrigerants over conventional R-410A heat pumps by optimizing the heat exchanger designs. A simulation model is developed for heat pumps with low GWP refrigerants and validated by comparing the predicted and measured data for R-410A and R-32. Based on the developed model, the diameter of the tube and the number of paths in the indoor and outdoor heat exchangers are optimized for each alternative refrigerant using the genetic algorithm. The performances of the optimized heat pumps with the low GWP refrigerants are compared with that of the R-410A heat pump to provide a selection guide for alternative refrigerants. The average performance improvements of the heat pumps with optimized heat exchanger designs were estimated to be 6.0%, 3.4%, and 2.4% for R-32, DR-5, and L-41a, respectively, compared with that of the baseline system. Thus, the R-32 heat pump delivered the highest performance improvement with the optimized heat exchanger designs.

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Performance comparison of heat pumps using low global warming potential refrigerants with optimized heat exchanger designs

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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