Energy, exergy, economic and environmental (4E) analysis of zeotropic mixture recuperative heat pump and vapor injection heat pump

Jiaxu Li, Qinglu Song, Wei Wu, Dechang Wang, Xianguo Jiang and Sai Zhou

Energy, 2025, vol. 317, issue C

Abstract: Air source heat pump is an effective energy saving and emission reduction technology. Large temperature span heating is an important factor limiting the performance of heat pumps. In this paper, a new type of zeotropic mixture recuperative heat pump and vapor injection heat pump were studied for heating water from 50 °C to 55 °C under the ambient temperature from −30 °C to 0 °C. An experimental bench of vapor injection heat pump system was built to measure the heating performance. Under the ambient temperature of 0 °C, R290/R1233zd(E) (0.8/0.2) has comprehensive performance advantages, with the COP of 3.44 and volume heating capacity of 2587 kJ m−3. Compared with the vapor injection heat pump, the zeotropic mixture recuperative heat pump has a higher COP. To further explore the performance of the two heat pumps in different environments, seven cities in China were chosen to analyze the seasonal, economic and emission performances of the two systems. Changsha has the lowest latitude with the highest seasonal COP of 3.86. In all operating conditions, the zeotropic mixture recuperative heat pump has a lower payback period and annual emissions. Under all operating conditions, the compressor has the lowest exergoeconomic factor.

Keywords: Air source heat pump; Zeotropic mixture; Genetic algorithm; Exergoeconomic; Seasonal performance (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:317:y:2025:i:c:s0360544225003238

DOI: 10.1016/j.energy.2025.134681

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