基于高温质子交换膜燃料电池可持续性火用指标的性能分析。

Performance Analysis Based on Sustainability Exergy Indicators of High-Temperature Proton Exchange Membrane Fuel Cell.

机构信息

College of Automobile and Traffic Engineering, Nanjing Forestry University, Nanjing 210037, China.

出版信息

Int J Mol Sci. 2022 Sep 4;23(17):10111. doi: 10.3390/ijms231710111.

DOI:10.3390/ijms231710111

PMID:36077509

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9456530/

Abstract

Based on finite-time thermodynamics, an irreversible high-temperature proton exchange membrane fuel cell (HT-PEMFC) model is developed, and the mathematical expressions of exergy efficiency, exergy destruction index (EDI), and exergy sustainability indicators (ESI) of HT-PEMFC are derived. According to HT-PEMFC model, the influences of thermodynamic irreversibility on exergy sustainability of HT-PEMFC are researched under different operating parameters that include operating temperatures, inlet pressure, and current density. The results show that the higher operating temperature and inlet pressure of HT-PEMFCs is beneficial to performance improvement. In addition, the single cell performance gradually decreases with increasing current density due to the presence of the irreversibility of HT-PEMFC.

摘要

基于有限时间热力学，建立了一种不可逆的高温质子交换膜燃料电池（HT-PEMFC）模型，并推导出了 HT-PEMFC 的火用效率、火用破坏指数（EDI）和火用可持续性指标（ESI）的数学表达式。根据 HT-PEMFC 模型，研究了不同操作参数（包括操作温度、入口压力和电流密度）下热力学不可逆性对 HT-PEMFC 火用可持续性的影响。结果表明，HT-PEMFC 的较高操作温度和入口压力有利于性能的提高。此外，由于 HT-PEMFC 的不可逆性的存在，单个电池的性能随着电流密度的增加而逐渐降低。