Experimental investigation of the meredith effect for fuel-cell cooling

Kurzfassung

To demonstrate the Meredith effect and also its impact on the ram-air-channel drag, a test rig was developed. The results show, that it is possible to make use of the Meredith effect even at relatively low flow velocities and high internal pressure losses. Furthermore, the control of the internal flow and inlet conditions using variable outlet flaps is presented. The possible spillage and suction operating conditions are experimentally investigated, and their potential to further reduce drag or to boost the cooling power is discussed.