Optimizing the influence of refrigerant superheat on the cooperative thermal management system performance for the vehicle cabin and battery

IF 3.5 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2024-10-02 DOI:10.1016/j.ijrefrig.2024.09.013

Jiesong Jian, Yingchao Zhang, Guohua Wang, Qiankun Li

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Abstract

The refrigerant superheat significantly impacts on the energy consumption of the vehicle cabin and battery collaborative thermal management system. The study investigates the problem using a genetic algorithm. Firstly, the model of collaborative thermal system is established and verified. Then, the coefficient of performance (COP) maximization is taken as the optimization target during steady-state conditions. The results show that the optimal refrigerant superheat at the evaporator outlet (S_Eva) is very low for different heat dissipation of the battery (H_Bat) as well as ambient temperature, while the optimal refrigerant superheat at the chiller outlet (S_Chi) is affected by the H_Bat as well as ambient temperature. Finally, according to conclusions under the steady state, the S_Eva is set to 1 K and taking the energy consumption (EC) as the response under transient condition, the S_Chi is determined. The results indicate that when the S_Chi is decided by single-point optimization, the optimal S_Chi is 18 K, and the EC is 1490 kJ, which is 2.3 % energy saving compared to the basic condition. When the S_Chi is decided by two-point optimization, the optimal two superheats are 12 K and 37 K and the EC is 1460 kJ, which is 4.3 % energy saving compared to the basic condition.

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优化制冷剂过热度对汽车座舱和电池协同热管理系统性能的影响

制冷剂过热度对汽车座舱和电池协同热管理系统的能耗有很大影响。本研究采用遗传算法对该问题进行了研究。首先，建立并验证了协同热系统模型。然后，将性能系数（COP）最大化作为稳态条件下的优化目标。结果表明，在电池散热量（HBat）和环境温度不同的情况下，蒸发器出口的最佳制冷剂过热度（SEva）非常低，而冷水机组出口的最佳制冷剂过热度（SChi）则受 HBat 和环境温度的影响。最后，根据稳态下的结论，将 SEva 设为 1 K，并以能耗（EC）作为瞬态条件下的响应，确定 SChi。结果表明，通过单点优化确定 SChi 时，最佳 SChi 为 18 K，EC 为 1490 kJ，与基本条件相比节能 2.3%。通过两点优化决定 SChi 时，最佳的两个过热度分别为 12 K 和 37 K，EC 为 1460 kJ，与基本条件相比节能 4.3%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Refrigeration-revue Internationale Du Froid 工程技术-工程：机械

CiteScore

7.30

自引率

12.80%

发文量

363

审稿时长

3.7 months

期刊介绍： The International Journal of Refrigeration is published for the International Institute of Refrigeration (IIR) by Elsevier. It is essential reading for all those wishing to keep abreast of research and industrial news in refrigeration, air conditioning and associated fields. This is particularly important in these times of rapid introduction of alternative refrigerants and the emergence of new technology. The journal has published special issues on alternative refrigerants and novel topics in the field of boiling, condensation, heat pumps, food refrigeration, carbon dioxide, ammonia, hydrocarbons, magnetic refrigeration at room temperature, sorptive cooling, phase change materials and slurries, ejector technology, compressors, and solar cooling. As well as original research papers the International Journal of Refrigeration also includes review articles, papers presented at IIR conferences, short reports and letters describing preliminary results and experimental details, and letters to the Editor on recent areas of discussion and controversy. Other features include forthcoming events, conference reports and book reviews. Papers are published in either English or French with the IIR news section in both languages.