Thermal regenerative design of a fuel cell cogeneration system

► The thermal regenerative unit recovers the heat dissipated by the stack. ► A thermostat valve has optimized the stack operation temperature. ► The effectiveness of the planar heat exchanger rounds 100% in the steady state. ► The thermal efficiency of the fuel cell cogeneration system is about 20 ± 8%. ► The overall efficiency of the cogeneration system is as high as 75% at PL = 2.5 kW and TR = 54 °C.