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Design and performance study of PEMFC cogeneration system

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PEMFC 热电联供系统设计与性能研究

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Dec.2024, Vol.47 No.12: 1693-1697, 1703

DOI: 10.3969/j.issn.1003-5060.2024.12.017

Authors

DUAN Shuqi, WANG Changjian

(School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China)

Abstract and Keywords

Abstract: On the premise of ensuring the power efficiency, this paper designs and builds a proton exchange membrane fuel cell (PEMFC) cogeneration system which can directly use the cooling water with waste heat for heat recovery. The dynamic response and output performance of the stack in actual operation, as well as the thermal and electrical efficiency of the PEMFC cogeneration system were tested. It is found that the power output of the stack is stable and the dynamic response is rapid. With the increase of the stack power, the electrical efficiency of the system decreases, while the thermal efficiency and total efficiency of the system increase. The total efficiency of the cogeneration system can reach up to 85.47%, which is 38.06% higher than that of PEMFC cell, thus greatly improving the energy utilization rate.

Keywords: hydrogen energy; proton exchange membrane fuel cell(PEMFC); cogeneration; dynamic response; efficiency analysis

作者信息

段书祺，王昌建

（合肥工业大学土木与水利工程学院，安徽合肥230009）

摘要和关键词

摘要: 在保证发电效率的前提下, 文章设计并搭建一种可直接利用带有废热的冷却水进行热回收的新型质子交换膜燃料(proton exchange membrane fuel cell, PEMFC)热电联供系统, 并测试电堆实际运行时的动态响应与输出性能以及PEMFC热电联供系统的热效率与电效率。结果表明: PEMFC电堆可以稳定输出功率并且动态响应迅速; 随着电堆输出功率的增加, 系统电效率下降, 系统热效率和系统总效率增加; 与PEMFC单独发电时的系统效率相比, 热电联供模式下系统总效率最高可达85.47%, 提升了38.06%, 大幅提高了能源利用率。

关键词: 氢能；质子交换膜燃料电池（PEMFC）；热电联供；动态响应；效率分析

Funding

国家重点研发计划资助项目（2021YFB4001003）

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