Energetic, economic and environmental analysis of air source transcritical CO2 heat pump system for residential heating in China

Shengchun Liu, Zheng Li, Baomin Dai*, Zhifeng Zhong, Hailong Li, Mengjie Song, Zhili Sun

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

117 Citations (Scopus)

Abstract

Using air source heat pump system for residential heating is a practical way to replace coal-fired boiler in China to alleviate the haze problem, and CO2 is a promising candidate to replace hydrochlorofluorocarbon (HCFC) or hydrofluorocarbon (HFCs) charged into the system. A mathematical model is developed to comprehensively evaluate the energetic, economical and environmental performances of CO2 heat pump system compared with other three traditional heating methods. The results indicate that the primary energy ratio of CO2 heat pump is the highest and it is a rational way to utilize renewable energy with the renewable energy contribution ratio of 0.60–0.69. The initial capital cost of CO2 heat pump is much higher due to the dominant compressor cost. The emission of CO2 heat pump is lower than that of coal-fired boiler at seasonal performance factor above 2.44. The initial and operation cost can be gradually reduced with the mass production and energy efficiency improvement of CO2 heat pump. It is believe that air source CO2 heat pump system can be employed for home heating in China, especial for the hot summer and cold winter region.

Original languageEnglish
Pages (from-to)1425-1439
Number of pages15
JournalApplied Thermal Engineering
Volume148
DOIs
Publication statusPublished - 5 Feb 2019
Externally publishedYes

Keywords

  • Carbon dioxide
  • China
  • Heat pump
  • Residential heating
  • Techno-economic analysis

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