| Title |
An Experimental Study of Coolant Operating Conditions in a Polymer Electrolyte Membrane Fuel Cell |
| Authors |
정성일(Seongir Choeng) ; 김태완(Taewan Kim) ; 이창건(Changgun Lee) ; 김두현(Doohyun Kim) ; 안영철(Youngchull Ahn) ; 이재근(Jaekeun Lee) ; 황유진(Yujin Hwang) |
| Keywords |
냉각수 ; 고분자연료전지 ; 출력 ; 전류 밀도 ; 유량 ; 냉각수 입구측 온도 Coolant ; PEMFC ; Power ; Current density ; Flow rate ; Coolant inlet temperature ; |
| Abstract |
A coolant operating condition in a fuel cell stack was an important factor to determine the temperature distribution which affected the fuel cell performance and relative humidity. In this study, the fuel cell performance was evaluated as a function of the coolant flow rate with the range of 0.1～0.8 liter/min·cell and the coolant inlet temperature of 20～82 ℃. The cell temperature increased with increasing the coolant inlet temperature and with decreasing the coolant flow rate. The coolant inlet temperature and flow rate to maintain the better performance of the fuel cell were in the range of 45～60 ℃ and 0.2～0.4 liter/min·cell, respectively. The experimental results showed that the optimal heat removal rate from the stack by coolant was 0.4～0.6 W/cm2·cell. |