Abstract
Since the high temperature proton exchange membrane fuel cells (HT-PEMFC) stack require a range of auxiliary equipments to maintain operating conditions, it is necessary to consider operation of related components in the design of HT-PEMFC systems. In this paper, a thermodynamic model of a vehicular HT-PEMFC system using phosphoric acid doped polybenzimidazole membrane is developed. The power distribution and exergy loss of each component are derived according to thermodynamic analysis, where the stack and heat exchanger are the two components with the greatest exergy loss. In addition, ecological functions and improvement potentials are proposed to evaluate the system performance better. On this basis, the effects of stack inlet temperature, pressure, and stoichiometric on system performance are analyzed. The results showed that the energy efficiency, exergy efficiency and net output power of the system achieved the maximum when the inlet gases temperature is 406.1 K. The system performance is better when the cathode inlet pressure is relatively low and the anode inlet pressure is relatively high. Moreover, the stoichiometry should be reduced to improve the system output performance on the basis of ensuring sufficient gases reaction in the stack.
Subject
Filtration and Separation,Chemical Engineering (miscellaneous),Process Chemistry and Technology
Reference84 articles.
1. Toward sustainable fuel cells
2. Techno-economic evaluation for hybrid renewable energy system: Application and merits
3. Review on sustainable development of forest-based biodiesel;Liu;J. Nanjing For. Univ. Nat. Sci. Ed.,2020
4. Catalytic cracking of soybean oil via a distillation process for renewable liquid fuel;Chen;J. Nanjing For. Univ. Nat. Sci. Ed.,2011
5. Research trends and future key issues of global harvested wood products carbon science;Yang;J. Nanjing For. Univ. Nat. Sci. Ed.,2021
Cited by
12 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献