储能科学与技术 ›› 2024, Vol. 13 ›› Issue (2): 390-395.doi: 10.19799/j.cnki.2095-4239.2023.0560

• 储能材料与器件 • 上一篇    下一篇

车用燃料电池散热性能实验研究

白静(), 范惠芳, 崔四齐, 许闯, 张毅, 关斯泽, 杨涵斐, 贾一飞, 耿树伟, 郑慧凡   

  1. 中原工学院能源与环境学院,河南 郑州 451191
  • 收稿日期:2023-08-21 修回日期:2023-09-06 出版日期:2024-02-28 发布日期:2024-03-01
  • 通讯作者: 白静 E-mail:baijing13703842765@163.com;baijing
  • 作者简介:白静(1968—),女,硕士,副教授,研究方向为制冷空调节能技术和热管理研究, E-mail:baijing13703842765@163.com
  • 基金资助:
    国家自然科学基金项目(52076219);河南省科技攻关项目(202102310556)

Experimental study on heat dissipation performance of automotive fuel cells

Jing BAI(), Huifang FAN, Siqi CUI, Chuang XU, Yi ZHANG, Size GUAN, Hanfei YANG, Yifei JIA, Shuwei GENG, Huifan ZHENG   

  1. School of Energy and Environment, Zhongyuan University Technology, Zhengzhou 451191, Henan, China
  • Received:2023-08-21 Revised:2023-09-06 Online:2024-02-28 Published:2024-03-01
  • Contact: Jing BAI E-mail:baijing13703842765@163.com;baijing

摘要:

质子交换膜燃料电池(PEMFC)作为能效转换率高、清洁可靠的发电装置,在交通、储能、航天及军事等领域有着广泛应用。为了解决质子交换膜燃料电池散热密度高、发热量大、散热效率低等突出问题,本文针对散热量为15 kW的质子交换膜燃料电池,设计并搭建了一套具有四种不同流程换热器的车用燃料电池散热系统实验台。分别使用两相冷却工质HFE-7100和乙二醇水溶液作为冷却工质,探究了在35 ℃的高温环境中,两种工质在不同流程换热器和不同工质流量下的散热性能和系统能效比(Energy Efficiency Rating, EER)。结果表明,在相同的流程下,采用HFE-7100两相散热方式相对于采用乙二醇水溶液液冷散热方式散热量提升率在81.2%~98.8%之间,系统EER提升率在68.2%~88.6%之间。且在4种不同流程下,3流程的系统散热效果和节能效果最佳,两相工质HFE-7100散热量和系统EER分别达到14.4 kW和20.5 kW/kW,液冷工质乙二醇水溶液散热量和系统EER分别达到7.7 kW和12.1 kW/kW。冷却工质流量为4 L/min时,系统节能效果较好,其两相和液冷散热系统EER分别能达到20.9 kW/kW和10.5 kW/kW。

关键词: 质子交换膜燃料电池, 不同流程换热器, 两相冷却工质, EER

Abstract:

The proton exchange membrane fuel cell (PEMFC) serves as a widely used power generation device in transportation, energy storage, aerospace, and military applications owing to its high energy-efficient conversion rate, clean operation, and reliability. To address the challenges of PEMFC, specifically its high heat dissipation density, high heat generation, and low heat dissipation efficiency, an experimental bench for an automotive fuel cell heat dissipation system was constructed. This system incorporated four different flow heat exchangers, catering to a 15 kW PEMFC with a heat dissipation issue. The experimental setup employed two-phase cooling mediums, namely HFE-7100 and an aqueous ethylene glycol solution. The investigation focused on their thermal performance and system energy efficiency rating under different process heat exchangers and various medium flow rates at 35 ℃. The results showed that under the same flow path, HFE-7100 two-phase cooling medium exhibited an improved heat dissipation rate between 81.2% and 98.8%, with a system energy efficiency ratio (EER) improvement rate between 68.2% and 88.6% compared with ethylene glycol aqueous liquid cooling. Among the four different flow paths, flow path 3 demonstrated the best system heat dissipation and EER. Specifically, HFE-7100 two-phase cooling achieved heat dissipation and system EER of 14.4 kW and 20.5 kW/kW, while ethylene glycol aqueous liquid cooling reached 7.7 kW and 12.1 kW/kW, respectively. At a cooling medium flow rate of 4 L/min, the system exhibited better energy-saving effects, with the two-phase and liquid-cooling heat dissipation system EER reaching 20.9 and 10.5 kW/kW, respectively.

Key words: proton exchange membrane fuel cell, heat exchangers for different process, two-phase cooling medium, EER

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