制冷学报2026，Vol.47Issue(2)：35-42,8.DOI:10.12465/issn.0253-4339.20241202001
排气余热驱动的引射过冷CO2热泵系统性能分析
Performance Analysis of Ejector Subcooling Transcritical CO2 Heat Pump System Driven by the Discharge Waste Heat
摘要
Abstract
To resolve the issues of significant throttling loss and performance degradation of a baseline transcritical CO2 air-source heat pump system(Base)for building space heating,an ejector subcooling transcritical CO2 air-source heat pump system(ESH)driven by the waste heat of the compressor discharge gas is proposed in this paper.The thermodynamic performance of the ESH system was optimized and analyzed using four working fluids.Five typical cities were selected for comparison,and the heating season performance factor(HSPF)was analyzed.The results reveal that the coefficient of performance(COP)of the ESH system first increased and then decreased with the increase of discharge pressure,and an optimal discharge pressure exists.Compared with the Base system,the ESH system using R1234ze(Z)displayed the most remarkable improvement in COP(with the highest increase of 20.64%).The discharge pressure of the ESH system reduced by up to 9.20%compared with that of the Base system,and the exergy efficiency increased by 7.13%-18.61%.The HSPF of the ESH system was 9.68%to 14.21%higher than that of the Base system.The performance improvement was higher when it was used in severely cold regions.关键词
跨临界CO2/引射过冷/排气余热/空气源热泵/供暖季节性能系数Key words
transcritical CO2/ejector subcooling/waste heat of discharge gas/air-source heat pump/heating season performance factor分类
通用工业技术引用本文复制引用
代宝民,王祥军,刘圣春,王明瑄,谢山东,李晨滋,张通..排气余热驱动的引射过冷CO2热泵系统性能分析[J].制冷学报,2026,47(2):35-42,8.基金项目
国家自然科学基金(52476085)资助项目.The project was supported by the National Natural Science Foundation of China(No.52476085).本文受天津市自然科学基金项目(24JCZDJC00390)资助.The project was supported by the Tianjin Natural Science Foundation(No.24JCZDJC00390). （52476085）
