Fuel cell cooling system efficiency calculation study

Introduction (problem statement and relevance). The relevance of the study is determined by specific operational features of low-temperature proton-exchange membrane hydrogen fuel cells (FC). The operating temperature of such power plants is lower than in case of an internal combustion engine, the maximum coolant temperature of the FC in question is 80°С. In order to ensure this operating temperature, the cooling system radiators shall have a large heat sink or removal area, overall dimensions and weight. Assessment of the FC cooling system efficiency allows creating designs with more rational parameters. The purpose of the study is to determine the heat dissipation capacity of a liquid cooling radiator in various operating conditions of the FC. Methodology and research methods. In the course of the work, a simulation model of a FC cooling system has been developed in order to determine the hydraulic resistance and coolant flow rate. After that, a finite element model of a radiator portion has been created, which served for heat dissipation capacity calculation for two operating conditions of the FC. Scientific novelty and results. As a result of the calculation, the values of heat removal capacity of the FC cooling system at ambient temperatures of 20°С and 30°С have been obtained. Practical significance. The results of the study will help to understand the choice of parameters of a cooling system for FC power units and plants.