Performance Analysis of Ejector Subcooling Transcritical CO<sub>2</sub> Heat Pump System Driven by the Discharge Waste Heat

Dai Baomin Wang Xiangjun Liu Shengchun Wang Mingxuan Xie Shandong Li Chenzi Zhang Tong

doi:10.12465/issn.0253-4339.20241202001

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Performance Analysis of Ejector Subcooling Transcritical CO₂ Heat Pump System Driven by the Discharge Waste Heat

更新时间：2026-03-30

- Performance Analysis of Ejector Subcooling Transcritical CO₂ Heat Pump System Driven by the Discharge Waste Heat
- Journal of Refrigeration Vol. 47, Issue 2, Pages: 35-42(2026)
- 作者机构：
  
  天津商业大学天津市制冷技术重点实验室天津 300134
- 作者简介：
- 基金信息：
  
  the National Natural Science Foundation of China(52476085)
- DOI：10.12465/issn.0253-4339.20241202001
  CLC： TB61⁺1;TK11⁺4
- CSTR：XXXXX.XX.XXX.20241202001
- Received：02 December 2024，
  
  Revised：2024-12-13，
  
  Accepted：11 February 2025，
  
  Published：16 April 2026
- 稿件说明：
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代宝民,王祥军,刘圣春等.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(02):35-42. DOI: 10.12465/issn.0253-4339.20241202001. CSTR: XXXXX.XX.XXX.20241202001.

Dai Baomin Wang Xiangjun Liu Shengchun Wang Mingxuan Xie Shandong Li Chenzi Zhang Tong.Performance Analysis of Ejector Subcooling Transcritical CO₂ Heat Pump System Driven by the Discharge Waste Heat[J].Journal of Refrigeration,2026,47(02):35-42. DOI: 10.12465/issn.0253-4339.20241202001. CSTR: XXXXX.XX.XXX.20241202001.
代宝民,王祥军,刘圣春等.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(02):35-42. DOI: 10.12465/issn.0253-4339.20241202001. CSTR: XXXXX.XX.XXX.20241202001. DOI：

Dai Baomin Wang Xiangjun Liu Shengchun Wang Mingxuan Xie Shandong Li Chenzi Zhang Tong.Performance Analysis of Ejector Subcooling Transcritical CO₂ Heat Pump System Driven by the Discharge Waste Heat[J].Journal of Refrigeration,2026,47(02):35-42. DOI: 10.12465/issn.0253-4339.20241202001. CSTR: XXXXX.XX.XXX.20241202001. DOI：

摘要

为解决基本跨临界CO

空气源热泵系统（Base）应用于建筑空间供暖时节流损失大、性能下降的问题，提出压缩机排气余热驱动的引射过冷跨临界CO

空气源热泵系统（ESH）。对ESH系统采用4种不同工质时的热力学性能进行了优化和分析。选取了5个不同典型城市的住宅建筑作为应用情景，对其供暖季节性能系数（HSPF）进行了分析。结果表明：ESH系统的COP随排气压力的增大先增加后降低，存在最优排气压力。相较于Base系统，使用R1234ze（Z）的ESH系统的性能系数提升最显著，最高可提升20.64%。ESH系统的排气压力比Base系统最高可降低9.20%，㶲效率可提升7.13%~18.61%。ESH系统的HSPF比Base系统高9.68%~14.21%，在严寒地区使用时性能提升更为显著。

Abstract

To resolve the issues of significant throttling loss and performance degradation of a baseline transcritical CO

air-source heat pump system （Base） for building space heating， an ejector subcooling transcritical CO

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 a

n 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.

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Performance Analysis of Ejector Subcooling Transcritical CO2 Heat Pump System Driven by the Discharge Waste Heat

DOI：10.12465/issn.0253-4339.20241202001

摘要

Abstract

关键词

Keywords

references

Performance Analysis of Ejector Subcooling Transcritical CO₂ Heat Pump System Driven by the Discharge Waste Heat