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Research on the performance of the transcritical CO2 refrigeration heat pump system for thermostatic transport vehicles
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Mengying YANG1, Yulong SONG1, Shouguo WANG2, Feng CAO1
Fluid Machinery | 2025, 53(3) : 26 - 35
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Fluid Machinery | 2025, 53(3): 26-35
Research on the performance of the transcritical CO2 refrigeration heat pump system for thermostatic transport vehicles
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Mengying YANG1, Yulong SONG1, Shouguo WANG2, Feng CAO1
Affiliations
  • 1School of Energy and Power Engineering，Xi'an Jiaotong University，Xi'an 710049，China
  • 2China Railway Economic and Planning Research Institute Co.，Ltd.，Beijing 100038，China
Published: 2025-03-30 doi: 10.3969/j.issn.1005-0329.2025.03.004
Outline
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This study investigates the feasibility of applying CO2 systems to thermal management in temperature-controlled rail transport vehicles. A transcritical CO2 refrigeration heat pump system for thermostatic transport vehicles was developed based on a multiphysics simulation platform，with simulation results validated through experimental testing. Further research was conducted on system discharge pressure and charge amount under varying operating conditions. Results indicate that optimal discharge pressure increases with rising ambient temperature and indoor heat exchanger inlet air temperature. A predictive correlation for optimal discharge pressure，using ambient temperature and inlet air temperature as independent variables，was established through data simulation. Both ambient and inlet air temperatures significantly influence the system's refrigerant charge amount，with an optimal charging range of 3.2~6.1 kg across all operating conditions. The well-designed transcritical CO2 system demonstrates excellent performance over a wide temperature range，particularly achieving heating COPs above 3.2. The optimized thermal management system maintained stable temperature control with only two start-stop cycles within 300 000 seconds. These findings provide theoretical support for promoting transcritical CO2 thermal management technology in thermostatic transport vehicles.

transcritical CO2 system  /  thermostatic transport vehicles  /  stochastic prediction of discharge pressure  /  comprehensive optimization of charge amount
杨梦莹, 宋昱龙, 王守国, 曹锋. 恒温运输车跨临界CO2制冷热泵系统性能研究. 流体机械, 2025 , 53 (3) : 26 -35 . DOI: 10.3969/j.issn.1005-0329.2025.03.004
Mengying YANG, Yulong SONG, Shouguo WANG, Feng CAO. Research on the performance of the transcritical CO2 refrigeration heat pump system for thermostatic transport vehicles[J]. Fluid Machinery, 2025 , 53 (3) : 26 -35 . DOI: 10.3969/j.issn.1005-0329.2025.03.004
Appendix
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Year 2025 volume 53 Issue 3
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Article Info
doi: 10.3969/j.issn.1005-0329.2025.03.004
  • Receive Date：2024-04-20
  • Online Date：2026-10-20
  • Published：2025-03-30
Article Data
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History
  • Received：2024-04-20
  • Revised：2024-10-20
Affiliations
    1School of Energy and Power Engineering，Xi'an Jiaotong University，Xi'an 710049，China
    2China Railway Economic and Planning Research Institute Co.，Ltd.，Beijing 100038，China
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多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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