Technical Paper
Design and Structural Parameters Analysis of the Turbine Rotor in Fuel Cell Vehicle
2021-04-06
2021-01-0729
As the most power-consuming component of the fuel cell system, the compressor directly affects the efficiency of the system. Using turbines to recover energy from the exhaust gas, has become a feasible means to improve the fuel cell system’s efficiency. Previous designs are mainly based on high-temperature (>523.15 K) gas. However, the exhaust gas temperature of the proton exchange membrane fuel cell is only about 348.15 K, which is much lower than the working fluid temperature of typical turbines (such as those used in internal combustion engine). In this paper, a turbine rotor for a 100kW fuel cell system was designed. The influences of non-design structural parameters including blade inlet incline angle, blade thickness, blade tip clearance and blade number on the aerodynamic performance and internal flow of the rotor are investigated. Computational fluid dynamic (CFD) model of the rotor single flow is established to predict the turbine aerodynamic performance.