燃料电池余热驱动吸附制冷复合系统仿真研究  

Simulation Study on a Hybrid Adsorption Refrigeration System Driven by Low-Grade Heat Sources From Fuel Cells

作　　者：徐静 潘权稳 张威 刘智亮 王如竹[1] 葛天舒[1] XU Jing;PAN Quanwen;ZHANG Wei;LIU Zhiliang;WANG Ruzhu;GE Tianshu(School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Zhejiang University City College,Hangzhou 310015,China;GREE Electric Appliances.INC,Zhuhai 519070,China)

机构地区：[1]上海交通大学机械与动力工程学院,上海200240 [2]浙大城市学院,杭州310015 [3]珠海格力电器股份有限公司,珠海519070

出　　处：《工程热物理学报》2022年第11期2874-2879,共6页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51922070)。

摘　　要：对质子交换膜燃料电池在运行过程中产生的60~80℃低品位废热进行高效回收利用是提高系统总效率的关键。本文提出一种吸附式制冷与除湿复合系统,利用燃料电池余热驱动实现高效制冷除湿。复合系统有三种运行模式以满足用户的制冷、除湿或冷水供应需求。对该复合系统进行仿真以评估其性能,结果表明,三种模式均能被60~80℃的低品位余热驱动。模式1和模式2的COP随热水入口温度的升高呈下降趋势,模式3的COP呈现先增后降的趋势。模式2的COP高于其他两种模式,可达0.971。采用该复合系统消纳燃料电池产生的低品位余热能大幅提高系统总效率,最高可达76.8%。The efficient utilization of low-grade heat sources in the range of 60-80℃ exhausted from the proton membrane exchange fuel cells is the key to improving its overall efficiency. A hybrid adsorption refrigeration system using desiccant coated heat exchangers is proposed in this paper to extract these low-grade heat sources for efficient cooling and dehumidification. This hybrid system can be operated in three working modes to achieve different purposes of cooling, dehumidification and cold-water supply. The performance of the hybrid system is evaluated theoretically and simulation results reveal that these three working modes can be powered effectively by low-grade heat sources at 60~80℃. The coefficient of performance(COP) of Mode 1 and Mode 2 decline with the increase of the inlet hot water temperature, which the COP of Mode 3 exhibits a trend of increasing first and then decreasing. The COP of Mode 2 is superior to other two modes, which can be up to 0.971.Adopting the hybrid system to exploit low-grade heat sources at 70℃ can significantly enhance the overall efficiency of proton membrane exchange fuel cells, reaching 76.8%.

关 键 词：燃料电池 高效利用 低品位余热 吸附式制冷 除湿换热器 

分 类 号：TK173[动力工程及工程热物理—热能工程]