李浩, 张振宇, 宋霞, 陈江平()

上海交通大学　制冷与低温工程研究所，上海 　200240

收稿日期:2020-03-09出版日期:2021-02-01发布日期:2021-03-03
通讯作者:陈江平E-mail:jpchen_sjtu@163.com
作者简介:李浩(1995-)，男，山东省日照市人，硕士生，主要研究方向为汽车空调制冷剂替代．
基金资助:国家自然科学基金资助项目(51776119)

Experimental Study of a Trans-Critical CO₂ Mobile Air Conditioning System with an Ejector

LI Hao, ZHANG Zhenyu, SONG Xia, CHEN Jiangping()

Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240, China

Received:2020-03-09Online:2021-02-01Published:2021-03-03
Contact:CHEN Jiangping E-mail:jpchen_sjtu@163.com

摘要/Abstract

摘要： 在焓差实验室中研制了一套车用二氧化碳(CO₂)喷射制冷空调系统，在标准汽车空调性能实验台上对不同工况参数下的CO₂制冷系统性能进行评估，并对比分析了CO₂喷射制冷系统的性能优势．研究结果表明：车用CO₂喷射制冷空调系统制冷量与车用CO₂常规制冷系统制冷量相当；增大室内侧风量与提高压缩机转速能够有效提升CO₂喷射制冷系统的制冷量，喷射器在不同工况下能够提升系统能效比(COP) 1.65%～12.60%；室外温度对车用CO₂喷射制冷系统的性能影响显著，该系统在高温环境下会出现明显的性能衰减．
关键词: 二氧化碳, 喷射器, 跨临界循环, 汽车空调, 性能
Abstract: A carbon dioxide(CO₂) ejector expansion air conditioning system for vehicles is developed in a calorimeter laboratory. In experimental tests on a standard mobile air conditioning bench, the effects of different operating parameters on the performance of the CO₂ refrigeration system for vehicles are studied, and the performance advantages of the CO₂ ejector expansion refrigeration system are comparatively analyzed. The research results show that the cooling capacity of the CO₂ ejector expansion refrigeration system for vehicles is almost equal to that of the CO₂ conventional cooling system. Both increasing the indoor air flow rate and increasing the compressor speed can effectively increase the cooling capacity of the CO₂ ejector expansion refrigeration system, and the ejector can increase the coefficient of performance (COP) of the system by 1.65% to 12.60% under different working conditions. The outdoor temperature has a great impact on the CO₂ ejector expansion refrigeration system performance, and the performance of CO₂ ejector expansion refrigeration system for vehicles decays obviously at a high ambient temperature.
Key words: carbon dioxide(CO₂), ejector, trans-critical cycle, mobile air conditioning, performance


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