制冷技术2024，Vol.44Issue(6)：28-36,9.DOI:10.3969/j.issn.2095-4468.2024.06.106
回热器位置对CO2双温制冷系统的影响
Effect of Superheater Position on CO2 Dual-temperature Refrigeration System
摘要
Abstract
In this paper,the CO2 parallel/ejector compression refrigeration system with superheater is studied,and three typical locations are selected in the system to add superheater.By establishing the model of this system,the variation law of each parameter in different modes is compared and analyzed.The simulation results show that in most cases,the addition of the superheater has a positive effect on the system,which can reduce the condensing pressure of the system and the refrigerant flow rate of the evaporator,improve the efficiency of the ejector and the system coefficient of performance(COP).However,installing the superheater will increase the temperature and enthalpy difference of CO2 at the compressor,in some cases it will have some adverse effects on the power consumption of the compressor and the system COP.Finally,by using a combination of three superheaters installation methods,the optimal operation strategy of the CO2 parallel/ejector compression refrigeration system with IHXs is proposed,the system COP is improved by 2.74%-5.36%compared with the classical system.关键词
制冷系统/二氧化碳/回热器/喷射器/平行压缩Key words
Refrigeration system/Carbon dioxide/Internal heat exchanger/Ejector/Parallel compression分类
通用工业技术引用本文复制引用
孙知晓,李广鹏,高鹏,姚海清,张文科,徐勤华..回热器位置对CO2双温制冷系统的影响[J].制冷技术,2024,44(6):28-36,9.基金项目
山东省高等学校青创人才引育计划团队(No.0031801). （No.0031801）
