Different configurations of thermal management system (TMS) have been used to cool down the fuel cell during operation. The typical thermal circuit consists of four components: heat exchangers like radiator & fan, coolant storage and a coolant pump as shown in Figure 1-a) [2]. The heat carried out from fuel cell stack is rejected the ambient air though the radiator with a fan that improves radiator efficiency. The coolant reservoir stores the coolant and the coolant pump supplies the coolant to the fuel cell stack.