Experimental Study on CO<sub>2</sub> Booster Refrigeration System based on Multi Ejector and Parallel Compression

Hang Jiayi; Liu Shengchun; Guo Xianmin; Miao Ronghua

doi:10.12465/issn.0253-4339.20260511001

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Experimental Study on CO₂ Booster Refrigeration System based on Multi Ejector and Parallel Compression

更新时间：2026-08-17

- Experimental Study on CO₂ Booster Refrigeration System based on Multi Ejector and Parallel Compression
- Journal of Refrigeration Pages: 1-8(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：
  
  Liu Shengchun， professor， School of Mechanical Engineering，Tianjin University of Commerce， 86-13920682426， E-mail：liushch@tjcu.edu.cn. Research fields： working fluid substitution using natural working fluid， energy saving and optimization of refrigeration system.
- 基金信息：
  
  the National Natural Science Foundation of China(52476085;52576017)
- DOI：10.12465/issn.0253-4339.20260511001
  CLC： TB657.2;TQ051.5
- Received：11 May 2026，
  
  Revised：2026-06-01，
  
  Accepted：04 June 2026，
  
  Online First：17 August 2026，
- 稿件说明：
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杭嘉怡，刘圣春，郭宪民，等. 基于多联引射与平行压缩的CO₂增压制冷系统实验研究［J］. 制冷学报，XXXX，XX（XX）：1-8. DOI: 10.12465/issn.0253-4339.20260511001.

Hang Jiayi，Liu Shengchun，Guo Xianmin，et al. Experimental Study on CO₂ Booster Refrigeration System based on Multi Ejector and Parallel Compression［J］. Journal of Refrigeration，XXXX，XX（XX）：1-8. DOI: 10.12465/issn.0253-4339.20260511001.
杭嘉怡，刘圣春，郭宪民，等. 基于多联引射与平行压缩的CO₂增压制冷系统实验研究［J］. 制冷学报，XXXX，XX（XX）：1-8. DOI: 10.12465/issn.0253-4339.20260511001. DOI：

Hang Jiayi，Liu Shengchun，Guo Xianmin，et al. Experimental Study on CO₂ Booster Refrigeration System based on Multi Ejector and Parallel Compression［J］. Journal of Refrigeration，XXXX，XX（XX）：1-8. DOI: 10.12465/issn.0253-4339.20260511001. DOI：

摘要

本文针对CO

跨临界增压制冷系统节流膨胀功回收不足、能效受限的问题，提出多联引射器组合与平行压缩协同优化方案，搭建多联引射器替代膨胀阀、集成并联压缩机的实验系统，对比研究了不同引射器组合下有无平行压缩对系统性能的影响。结果表明：液体引射器对系统性能起到关键作用，“单台液体+3台气体引射器”模式可使系统性能最优；与膨胀阀系统相比，无平行压缩的系统制冷量和COP最高分别提升8.4%~11.2%、15.3%~18.8%，引入平行压缩后制冷量和COP最高再提升0.5%~13.9%、4.6%~17.7%，功耗降低3.3%~4.3%，为CO

增压制冷系统高效优化提供了实验依据。

Abstract

To address the limited energy efficiency of the CO

transcritical booster refrigeration system due to insufficient recovery of expansion work， this paper proposes a collaborative optimization scheme of multiple ejectors and parallel compression. An experimental system of a multi-ejector replacing the expansion valve and integrating parallel compressors was built， and the influence of parallel compression on system performance was compared under different ejector combinations. The results show that the liquid ejector plays a key role in the system performance， and the "one liquid ejector with three gas ejectors" mode yields the optimum system performance. Compared wit

h the expansion valve system， the maximum refrigeration capacity and COP of the system without parallel compression increased by 8.4%-11.2% and 15.3%-18.8%， respectively. After the introduction of parallel compression， the maximum refrigeration capacity and COP increased by 0.5%-13.9% and 4.6%-17.7%， and the power consumption decreased by 3.3%-4.3%， providing an experimental basis for the efficient optimization of the CO

booster refrigeration system.

关键词

Keywords

references

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Experimental Study on CO2 Booster Refrigeration System based on Multi Ejector and Parallel Compression

DOI：10.12465/issn.0253-4339.20260511001

摘要

Abstract

关键词

Keywords

references

Experimental Study on CO₂ Booster Refrigeration System based on Multi Ejector and Parallel Compression