Performance of Supermarket Booster Refrigeration System Using the Zeotropic Working Fluid CO2/R1234yf

Hua Xue; Wu Tianhao; Dai Baomin; Liu Shengchun

doi:10.3969/j.issn.0253-4339.2024.03.143

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Performance of Supermarket Booster Refrigeration System Using the Zeotropic Working Fluid CO2/R1234yf

更新时间：2024-12-03

- Performance of Supermarket Booster Refrigeration System Using the Zeotropic Working Fluid CO2/R1234yf
- Journal of Refrigeration Vol. 45, Issue 3, Pages: 143-149(2024)
- 作者机构：
  
  1. 生态环境部对外合作与交流中心
  2. 天津商业大学天津市制冷技术重点实验室
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0253-4339.2024.03.143
  CLC：
- Published：2024
- 稿件说明：
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Hua Xue, Wu Tianhao, Dai Baomin, et al. Performance of Supermarket Booster Refrigeration System Using the Zeotropic Working Fluid CO2/R1234yf[J]. Journal of refrigeration, 2024, 45(3): 143-149.
DOI：

Hua Xue, Wu Tianhao, Dai Baomin, et al. Performance of Supermarket Booster Refrigeration System Using the Zeotropic Working Fluid CO2/R1234yf[J]. Journal of refrigeration, 2024, 45(3): 143-149. DOI： 10.3969/j.issn.0253-4339.2024.03.143.

摘要

为满足商超制冷领域系统能效提升和制冷剂替代的需求，提出了非共沸工质CO2/R1234yf商超增压制冷系统，通过建立热力学模型，与纯CO2商超增压制冷系统进行对比。结果表明：CO2/R1234yf商超增压制冷系统可在最优的CO2质量分数（0.94）及最优排气压力（8.81 MPa）下获得最大COP（1.40）；CO2/R1234yf商超增压制冷系统COP与纯CO2系统相比具有显著提升，环境温度为35 ℃时，提升7.25%；CO2/R1234yf商超增压制冷系统APF提升率为2.68%~4.72%，系统APF随典型城市所处纬度的增加而增大。CO2/R1234yf商超增压系统?效率随CO2质量分数的增加呈先增后减趋势，CO2质量分数为0.95时获得最高?效率，为0.18，相比纯CO2系统提升4.62%

Abstract

To meet the need for energy efficiency improvement and substitution of traditional refrigerants in the field of supermarket refrigeration

a supermarket booster refrigeration system using the eco-friendly zeotropic refrigerant CO2/R1234yf is proposed in this study. A thermodynamic model is established and compared with that of a pure CO2 booster refrigeration system. The results show that the maximum COP (1.40) of the system using CO2/R1234yf was obtained under the optimal CO2 mass fraction (0.94) and discharge pressure (8.81 MPa). The COP of the CO2/R1234yf booster refrigeration system was significantly improved compared with the pure CO2 system

which increased by 7.25% when the ambient temperature was 35 ℃. The APF improvement of the CO2/R1234yf booster system was 2.68%–4.72%. The APF increased with an increase in the latitude of typical cities. The exergy efficiency of the CO2/R1234yf booster system first increased and then decreased with increasing CO2 mass fraction. The CO2/R1234yf booster refrigeration system exhibited the highest exergy efficiency (0.18) when the CO2 mass fraction was 0.95

which was 4.62% higher than that of the CO2 system.

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