SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2022, Vol. 44 ›› Issue (4): 292-299.DOI: 10.1016/j.cjche.2021.02.028

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Study on environmentally friendly refrigerant R13I1/R152a as an alternative for R134a in automotive air conditioning system

Nuochen Zhang, Yuande Dai, Linghao Feng, Biao Li   

  1. School of Mechanical and Electrical Engineering, Nanchang University, Nanchang 330031, China
  • Received:2020-09-11 Revised:2021-01-24 Online:2022-06-18 Published:2022-04-28
  • Contact: Yuande Dai,E-mail:dydncutg@qq.com
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (22068024).

Study on environmentally friendly refrigerant R13I1/R152a as an alternative for R134a in automotive air conditioning system

Nuochen Zhang, Yuande Dai, Linghao Feng, Biao Li   

  1. School of Mechanical and Electrical Engineering, Nanchang University, Nanchang 330031, China
  • 通讯作者: Yuande Dai,E-mail:dydncutg@qq.com
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (22068024).

Abstract: Aiming at solving the problem of high global warming potential of R134a, a new mixed refrigerant R13I1/R152a (molar fraction ratio of 35:65) with no ozone depletion potential and low global warming potential was proposed as a substitute for R134a in automotive air conditioning. The computational models for the thermodynamic properties of R13I1/R152a were established by using the PR (Peng-Robinson) equation of state combined with the vdW mixing rule. Based on these models, the cycle performance of this working fluid was calculated, which was also compared with that of R134a and R1234yf under the different operating conditions. The results show that R13I1/R152a is a near azeotropic refrigerant whose temperature glide is approximately 0, and the saturated vapor pressure curve of which is equivalent to that of R134a. Moreover, compared to R134a, R13I1/R152a has an average 5.7% improvement in coefficient of performance as well as similar volumetric cooling capacity. The average coefficient of performance and volumetric cooling capacity of R13I1/R152a are significantly higher than those of R1234yf by 13.8% and 12.0%, respectively. However, the average discharge temperature of R13I1/R152a is approximately 13.3 K higher than that of R134a, but it is also within reasonable limits. Hence, the application of the proposed refrigerant R13I1/R152a in automotive air conditioning system is technically feasible.

Key words: Binary mixture, Vapor liquid equilibria, Thermodynamic properties, R13I1/R152a, Cycle performance

摘要: Aiming at solving the problem of high global warming potential of R134a, a new mixed refrigerant R13I1/R152a (molar fraction ratio of 35:65) with no ozone depletion potential and low global warming potential was proposed as a substitute for R134a in automotive air conditioning. The computational models for the thermodynamic properties of R13I1/R152a were established by using the PR (Peng-Robinson) equation of state combined with the vdW mixing rule. Based on these models, the cycle performance of this working fluid was calculated, which was also compared with that of R134a and R1234yf under the different operating conditions. The results show that R13I1/R152a is a near azeotropic refrigerant whose temperature glide is approximately 0, and the saturated vapor pressure curve of which is equivalent to that of R134a. Moreover, compared to R134a, R13I1/R152a has an average 5.7% improvement in coefficient of performance as well as similar volumetric cooling capacity. The average coefficient of performance and volumetric cooling capacity of R13I1/R152a are significantly higher than those of R1234yf by 13.8% and 12.0%, respectively. However, the average discharge temperature of R13I1/R152a is approximately 13.3 K higher than that of R134a, but it is also within reasonable limits. Hence, the application of the proposed refrigerant R13I1/R152a in automotive air conditioning system is technically feasible.

关键词: Binary mixture, Vapor liquid equilibria, Thermodynamic properties, R13I1/R152a, Cycle performance