Heating Performance and Economic Analysis of Solar-Assisted Cold-Water Phase-Change-Energy Heat Pump System in Series and Parallel Connections

Yujuan Yang, Ronghua Wu (), Yuanbo Yue, Yao Zhang, Yuanyuan Sun and Shunjie Liu
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Yujuan Yang: College of Mechanical and Electrical Engineering, Qingdao University, Qingdao 266000, China
Ronghua Wu: College of Mechanical and Electrical Engineering, Qingdao University, Qingdao 266000, China
Yuanbo Yue: Qingdao KC Blue New Energy Co., Ltd., Qingdao 266000, China
Yao Zhang: College of Mechanical and Electrical Engineering, Qingdao University, Qingdao 266000, China
Yuanyuan Sun: Qingdao KC Blue New Energy Co., Ltd., Qingdao 266000, China
Shunjie Liu: Qingdao KC Blue New Energy Co., Ltd., Qingdao 266000, China

Energies, 2023, vol. 16, issue 16, 1-21

Abstract: To study the heating performance of a solar-assisted cold-water phase-change-energy heat pump system, its heating performance under series and parallel connections is simulated for a community in Harbin, the influence of ice thickness on the different operation modes is analyzed, and the economy of the system is calculated for series and parallel connections in this paper. The results show that the water supply temperature is higher and more uniform in the parallel operation, and more terminal heat is supplied; the ice thickness has more of an influence on the series connection compared to the parallel connection; and the dynamic payback period is 6.72 years for the series connection and 7.28 years for the parallel connection. This case study can serve as a guide for practical engineering application projects and act as a reference for heating and economic data for the promotion of this heat pump system.

Keywords: cold-water phase change; heat pump system; ice thickness; solar; economics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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