流体机械2025，Vol.53Issue(3)：26-35,10.DOI:10.3969/j.issn.1005-0329.2025.03.004
恒温运输车跨临界CO2制冷热泵系统性能研究
Research on the performance of the transcritical CO2 refrigeration heat pump system for thermostatic transport vehicles
摘要
Abstract
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.关键词
跨临界CO2系统/恒温运输车/排气压力随机预测/充注量综合优化Key words
transcritical CO2 system/thermostatic transport vehicles/stochastic prediction of discharge pressure/comprehensive optimization of charge amount分类
交通运输引用本文复制引用
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[J].流体机械,2025,53(3):26-35,10.基金项目
广东省重点领域研发计划(2023B0909050005) （2023B0909050005）
国家自然科学基金项目(52006161) （52006161）
