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换热器结构对高速动车跨临界CO2热泵空调系统性能的影响
Influence of Heat Exchanger Structure on System Performance in Trans-Critical CO2 Heat Pump Air Conditioning Systems for Trains
- 制冷学报 2025年46卷第4期 页码：36-43
- 作者机构：
1.西安交通大学能源与动力工程学院 西安 710049
2.中车大连机车研究所有限公司 大连 116000
- 作者简介：
宋昱龙，男，副教授，西安交通大学能源与动力工程学院，13488264214，E-mail：yulong.song@mail.xjtu.edu.cn。研究方向：新能源车辆热泵空调及热管理技术、跨临界CO2制冷制热技术。
- 基金信息：国家自然科学基金(52006161)
DOI：10.12465/j.issn.0253-4339.2025.04.036
中图分类号： TB61+1;TK172收稿日期：2024-03-01，
修回日期：2024-07-25，
录用日期：2024-08-01，
纸质出版日期：2025-08-16
- 稿件说明：
移动端阅览
谢宏生, 白刚, 杨梦莹, 等. 换热器结构对高速动车跨临界CO2热泵空调系统性能的影响[J]. 制冷学报, 2025,46(4):36-43.
Xie Hongsheng, Bai Gang, Yang Mengying, et al. Influence of Heat Exchanger Structure on System Performance in Trans-Critical CO2 Heat Pump Air Conditioning Systems for Trains[J]. Journal of refrigeration, 2025, 46(4): 36-43.
谢宏生, 白刚, 杨梦莹, 等. 换热器结构对高速动车跨临界CO2热泵空调系统性能的影响[J]. 制冷学报, 2025,46(4):36-43. DOI： 10.12465/j.issn.0253-4339.2025.04.036.
Xie Hongsheng, Bai Gang, Yang Mengying, et al. Influence of Heat Exchanger Structure on System Performance in Trans-Critical CO2 Heat Pump Air Conditioning Systems for Trains[J]. Journal of refrigeration, 2025, 46(4): 36-43. DOI： 10.12465/j.issn.0253-4339.2025.04.036.
摘要
为研究高速动车上跨临界CO
2
热泵空调系统中换热器结构对系统性能、整体功耗的影响，以达到提升性能、减少功耗的目的，基于AMEsim仿真平台搭建了数值仿真模型。结果表明：在高速动车热泵空调系统中，气体冷却器结构对系统性能的影响大于蒸发器结构对系统性能的影响；而在换热器的结构选择上，制冷模式下室外换热器采用逆流、室内换热器采用顺流（对应制热模式下采用室外换热器顺流，室内换热器逆流）的结构为最优结构，其在额定制冷工况35 ℃下，比室外换热器顺流布置时的COP提升20.38%，额定制热工况7 ℃下，比室内换热器顺流布置时的COP提升68.04%。综合考虑逆流程度和风机功耗，在“充分换热状态”，系统COP会随着逆流程度的增大而升高，在“风量过小状态”，系统COP会随着逆流程度的增大而减小。
Abstract
To further study the influence of heat exchanger structures on system performance and overall power consumption in transcritical CO
2
heat pump air conditioning systems for high-speed trains to improve performance and reduce power consumption
this study builds a numerical simulation model based on the AMEsim simulation platform. The simulation results show that
in the high-speed train heat pump air conditioning system
the influence of the gas cooler structure on system performance is greater than that of the evaporator structure. In terms of the selection of heat exc
hanger structure
the optimal structure is that during refrigeration
the outdoor heat exchanger adopts the countercurrent arrangement and the indoor heat exchanger adopts the concurrent arrangement (vice versa for heating). At the rated cooling condition of 35 ℃ ambient temperature
the COP is increased by 20.38% compared to the concurrent arrangement in outdoor heat exchangers
and at a rated heating condition of 7 ℃ ambient temperature
the COP is increased by 68.04% compared to the concurrent arrangement of indoor heat exchangers. Considering both the degree of backflow and fan power consumption
in the "fully heat exchange state"
system COP increases with backflow degree
while system COP decreases with backflow degree when the air flow rate is insufficient.
关键词
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references
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