Qiao Yiyou, Fang Jianmin, Yin Xiang, et al. Simulation Study on the Effect of Supply Air Temperature on Vehicle Transcritical CO2 Refrigeration System[J]. Journal of refrigeration, 2022, 43(4).
DOI:
Qiao Yiyou, Fang Jianmin, Yin Xiang, et al. Simulation Study on the Effect of Supply Air Temperature on Vehicle Transcritical CO2 Refrigeration System[J]. Journal of refrigeration, 2022, 43(4). DOI: 10.3969/j.issn.0253-4339.2022.04.096.
Simulation Study on the Effect of Supply Air Temperature on Vehicle Transcritical CO2 Refrigeration System
To investigate the effect of supply air temperature on the comprehensive performance of a vehicle transcritical CO2 refrigeration system
a simulation model of a single-stage transcritical CO2 refrigeration system is established using the GT-Suite simulation software. Based on three designed operating conditions
system performances under different supply air temperatures are compared
the upper limit of the air volumetric flow rate is specified
and the concept of the effective coefficient of performance (COPeff) is proposed and analyzed. Under the same conditions
increasing the supply air temperature can improve the system coefficient of performance (COP)
COPeff
and the effective COP with fan power consumption. Under low cooling load conditions
the optimal value of COPb is 3.819
implying that the air supply temperature is optimal. However
when the cooling load increases to a certain level
the optimal air supply temperature is no longer valid. The research presented herein guides the selection of the supply air temperature for vehicle transcritical CO2 refrigeration systems.
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Related Author
Ma Yiyu
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Hua Ruoqiu
Wang Li
Yang Yongan
Li Ruishen
Sun Zhili
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Related Institution
School of Energy and Power Engineering, University of Shanghai for Science and Technology
Tianjin University of Commerce, Refrigeration Engineering Research Center of Ministry of Education of People’s Republic of China, Tianjin Key Laboratory of Refrigeration Technology, Tianjin Refrigeration Engineering Technology Center
Institute of Refrigeration and Cryogenics, University of Shanghai for Science and Technology