Comparison of near source two-phase flow cooling of power electronics in thermosiphon and forced convection modes

Next generation electric drives for HEV/EV propulsion systems: Technology, trends and challenges

“…by phase change, i.e., the absorption of thermal energy in the process of evaporation (liquid to vapour) and release of heat in the condensation process (vapour to liquid). A number of two-phase cooling alternatives, such as heat pipes, thermosyphon cooling and thermoelectric cooling can be highlighted [216,[244][245][246]. Heat pipe technology relies on natural forces to transfer heat.…”

“…Thermosyphon technology achieves heat flux transfer values of around 230-240 W/cm 2 , with moderate temperature fluctuations [245]. Many efforts have been done to improve the heat dissipation capability.…”

“…Many efforts have been done to improve the heat dissipation capability. In [245], a pump has been inserted in the loop to vary the flow rate of the coolant, allowing a cooling capacity up to 500 W/cm 2 with a thermal resistance of 0.125 (Kcm 2 )/W. Likewise, NREL (National Renewable Energy Laboratory) has developed a thermosyphon based system to cool the power electronics asociated to an EV motor.…”

Experimental Characterization of an Additively Manufactured Inconel 718 Heat Exchanger for High-Temperature Applications

“…Most of these works highlight the performance advantages of additively manufactured HXs, such as a printing resolution capability, the material used, and the different shapes that AM can fabricate. A more detailed study in the literature on the benefits of AM in thermal management devices (not only HXs) can be found in [21][22][23]. Out of the additively manufactured designs reported in Table 1, the manifold-microchannel heat exchanger (M2HX) showed the most promising results, as it could increase the heat transfer coefficient without a significant increase in pressure drop.…”

Effect of non-condensable gas on the behaviours of a controllable loop thermosyphon under active control

“…Battaglia et al introduced a cooling technology for power electronics based on a loop thermosyphon. The research showed that NCG can adversely affect cooling performance, but the reservoir structure helps avoid this problem [28] . These existing studies mainly focus on the effects of NCG on the performance of passive heat transfer, but they are insufficient.…”