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Keywords: optimal pressure
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Journal Articles

Thermodynamic Analysis of Comprehensive Performance of Carbon Dioxide(R744) and Its Mixture With Ethane(R170) Used in Refrigeration and Heating System at Low Evaporation Temperature

Dahan Sun, Zhongyan Liu, Hao Zhang, Xin Zhang, Jiang Qin
Journal: ASME Open Journal of Engineering
Publisher: ASME
Article Type: Research Papers
ASME Open J. Engineering. January 2024, 3: 031003.
Paper No: AOJE-23-1080
https://doi.org/10.1115/1.4064403
Published Online: January 18, 2024
..., outlet temperature of gas cooler, R170 ratio on coefficient of performance (COP), discharge temperature, optimal pressure, and compression ratio were analyzed. The results show that P opt increases and decreases with the increase of outlet temperature and evaporation temperature of gas cooler...
View Article titled, Thermodynamic Analysis of Comprehensive Performance of Carbon Dioxide(R744) and Its Mixture With Ethane(R170) Used in Refrigeration and Heating System at Low Evaporation Temperature
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Topics: Evaporation, Heating, Pressure, Refrigerants, Refrigeration, Temperature, Compression
Journal Articles

Comprehensive Performance Analysis and Correlation Fitting of R744 and Its Mixture Used in Refrigeration and Heat Pump Systems

Dahan Sun, Zhongyan Liu, Hao Zhang, Xin Zhang
Journal: ASME Open Journal of Engineering
Publisher: ASME
Article Type: Research Papers
ASME Open J. Engineering. January 2023, 2: 021047.
Paper No: AOJE-23-1023
https://doi.org/10.1115/1.4063341
Published Online: September 27, 2023
... is 8–12 MPa, there is a critical ratio of R744. When the ratio of R744 is less than the critical ratio, the optimal pressure of the system increases with the increase of the ratio of R744, and when the ratio of R744 is higher than critical ratio, the optimal pressure of the system decreases...
View Article titled, Comprehensive Performance Analysis and Correlation Fitting of R744 and Its Mixture Used in Refrigeration and Heat Pump Systems
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Topics: Evaporation, Heat pumps, Pressure, Refrigerants, Refrigeration, Simulation, Temperature, Fittings, Heating, High pressure (Physics)