Facing higher and higher heat load and more rigorous limitations on energy consumption, conventional heat sinks and vapor chambers are falling short of new requirements. In this paper, a hybrid vapor chamber heat sink (HVCHS) of liquid cooling is developed, wherein the active liquid cooling channel is embedded in the vapor region of the vapor chamber so that two modes of heat transfer, phase change and single-phase heat transfer, are incorporated in a single device. The thermal performance, hydraulic characteristics, and cooling coefficient of performance (COP) of the HVCHS are investigated. The hybrid design provides a high cooling capacity of 1200 W using a 9 cm² heater and maintains the maximum junction temperature of 95.25 °C simultaneously. The streamwise temperature rise is only 2.04 °C on the bottom surface under the maximum cooling capacity, which shows great temperature uniformity under high power. The minimum thermal resistance is as low as 0.04 °C/W and is compared with some previous studies. The minimum pressure drop is 4.83 kPa with the corresponding pump power of 80.5 mW. The cooling COP is above 12,500 for heat inputs of more than 850 W. The HVCHS may have great potential for the energy-saving cooling management of high-performance electronics.

面对越来越高的热负荷和更严格的能耗限制，传统的散热器和均热板已无法满足新的要求。在本文中，开发了一种液体冷却的混合蒸汽室散热器（HVCHS），其中主动液体冷却通道嵌入蒸汽室的蒸汽区域，从而使相变和单相热两种传热模式传输，集成在一个设备中。研究了 HVCHS 的热性能、水力特性和冷却性能系数 (COP)。混合设计提供 1200 W 的高冷却能力，使用 9 cm ²加热器并同时保持 95.25 °C 的最高结温。最大冷量下，底面顺流温升仅2.04℃，大功率下温度均匀性好。最小热阻低至 0.04 °C/W，并与之前的一些研究进行了比较。最小压降为 4.83 kPa，相应的泵功率为 80.5 mW。对于超过 850 W 的热输入，冷却 COP 高于 12,500。HVCHS 可能在高性能电子设备的节能冷却管理方面具有巨大潜力。