Heat transfer performance of flat heat pipe for PEMFC
In order to explore the heat transfer performance of flat heat pipes in the stack,the heat transfer performance test experiment of the flat heat pipe was designed according to the heat transfer conditions in the stack.The results show that the flat plate heat pipe is sensitive in transient response and the response time is between 100-260 s.When the heating power increases,the temperature difference of the flat heat pipe increases,the equivalent thermal resistance decreases.The flat heat pipe is in the starting stage at 5-15 W.The equivalent thermal resistance is lower than 0.1 ℃/W and the temperature difference is less than 5 ℃ at 40-50 W.When the cooling air speed increases,the temperature difference and equivalent thermal resistance of the plate heat pipe increase.The working inclination angle has a significant effect on the performance of the flat heat pipe,and the working conditions against gravity deteriorate the performance of the flat heat pipe.The equivalent thermal resistance of the flat plate heat pipe at-90° working inclination is about 3 times that of 90° at a heating power of 50 W.
万方数据
维普
