Abstract
Integrated Sublimator Drive Coldplate (ISDC) is a novel sublimator, which couples the Sublimator Drive Coldplate (SDC) with a pump driven fluid loop so that the whole system loop can be cooled effectively. To study heat transfer characteristics of ISDC under different working modes, the detailed ISDC model, the mathematical models of heat and mass transfer and the ground heat transfer test system are established. In this study, the effects of state parameters of circulating cooling water (CCW) and heat flux on the heat transfer characteristics of ISDC under different working modes are studied experimentally and numerically. The results show that the heat flux is 7000 W/m2 with a surface temperature of only 286.4 K which justifies ISDC's heat-sinking capability. The heat dissipation effect of ISDC on avionics boxes is better than that of CCW in ISDC mode. The condition for CCW to cooperate with feed water sublimation for dissipating the avionics boxes is that CCW's inlet temperature is less than 298.15 K, when heat flux and CCW's mass flow are 6000 W/m2 and 40 kg/h, respectively. Numerical results through COMSOL Multiphysics software show good agreement with experimental results. Importantly, the studies provided an important reference for the rare experimental and numerical studies of sublimator.
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