Numerical investigation on thermodynamic performance of CO2-based mixed refrigerants applied in transcritical system

The CO 2 -based mixed refrigerants R744/R152a and R744/R161 are proposed to enhance the thermodynamic performance of pure CO 2 refrigerant. The basic physical properties of the three refrigerants were analyzed, and the thermodynamic performance of refrigerants with different CO 2 ratios are compared...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2022-06, Vol.147 (12), p.6883-6892
Main Authors: Xie, Jintao, Wang, Jian, Lyu, Yiming, Wang, Dingbiao, Peng, Xu, Liu, Huadong, Xiang, Sa
Format: Article
Language:English
Subjects:
Analytical Chemistry
Carbon dioxide
Chemistry
Chemistry and Materials Science
Inorganic Chemistry
Measurement Science and Instrumentation
Physical Chemistry
Physical properties
Polymer Sciences
Refrigerants
Thermodynamics
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Summary:The CO 2 -based mixed refrigerants R744/R152a and R744/R161 are proposed to enhance the thermodynamic performance of pure CO 2 refrigerant. The basic physical properties of the three refrigerants were analyzed, and the thermodynamic performance of refrigerants with different CO 2 ratios are compared. The results present that the optimized ratios of the new refrigerants are R744/R152a: 0.875/0.125, R744/R161: 0.850/0.150, based on which the coefficient of performance (COP), heating and cooling capacity of the optimized refrigerants increase significantly, which are up to 90% of R134a, and the exhaust pressure reduces by 1.6–1.8 MPa compared with that of pure CO 2 .
ISSN:1388-6150
1588-2926
DOI:10.1007/s10973-021-11011-x