温度波动对质子交换膜燃料电池的影响

An analysis of the temperature fluctuation effect on proton exchange membrane fuel cell

为了研究温度波动对质子交换膜燃料电池性能的影响,文章提出了一种新的温度计算模型——温度波动模型。将温度波动模型通过自定义函数导入计算流体动力学软件(Fluent)上进行仿真计算,并建立燃料电池试验测试系统,对工作温度为60℃,进气温度分别为43,50,55℃的电池性能进行测试。通过对Fluent模型、温度波动模型和试验值的比较发现:随着进气温度的升高,温度波动趋于平缓,燃料电池的性能逐渐增强;温度波动模型能够较准确地预测燃料电池的性能,尤其在进气温度为43℃、电流密度为1.088 A/cm2时,其误差比Fluent模型减少30%。

In order to study the effects of temperature fluctuation on the performance of proton exchange membrane fuel cell, a new model for temperature fluctuation is proposed. Temperature fluctuation model is imported into the computational fluid dynamics software（Fluent）. The fuel cell test system is established and experiment is finished at the operating temperature of 60 ℃ and the inlet temperature of 43, 50, 55 ℃. The results show that the temperature fluctuation model can accurately predict the performance of the fuel cell, especially when the temperature is 43 ℃, the error is 30% less than the original Fluent model. With the increase of intake temperature, the temperature fluctuation model tends to be gentle, and the performance of fuel cell is gradually increased at the same working temperature.