Numerical Investigation of Heat Dissipation Components and Thermal Management System in Fuel Cell Vehicle Engines

A One-dimensional analytical model of proton exchange membrane fuel cell (PEMFC) engine is developed, which is divided into three parts: fuel cell stack, intake & exhaust system, and thermal management system. The modeling of the thermal management system mainly includes the components such as expansion tanks, thermostats, pumps, fans and radiators. The heat transfer and flow characteristics of the key heat dissipation modules in the thermal management system are studied, namely the three-dimensional modeling and analysis of fans and radiators. A porous media model is used for the unit parallel flow radiator. After obtaining the parameters required to establish the porous media model, the three-dimensional flow and temperature field are calculated by replacing the real fin with the porous media model. Finally, the one-dimensional thermal management system and the three-dimensional flow field are coupled and analyzed, and the 1D and 3D collaborative simulation method is adopted to improve the modeling accuracy of the fuel cell engine thermal management system