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In this study, temperature uniformity and heating rate of heat spreader with multi-well are simulated and analyzed by CFD software under natural convection condition. Firstly, multi-well heat spreader made of aluminum, copper, silver and vapor chamber are simulated and compared, when dual and six heat sources are applied at a heating power of 1200W. Secondly, with six heat sources at heating power of 188, 300, 600 and 1200W, the heating rate of heat spreaders are studied. Vapor chamber heat spreader has the better temperature uniformity both in six sources and dual sources mode due to a higher thermal conductivity, followed by silver, copper and aluminum heat spreader. Aluminum and silver heat spreader show the higher heating rate, followed by copper heat spreader, vapor chamber heat spreader due to a larger heat capacity, heat up the slowest.

TEMPERATURE UNIFORMITY ANALYSIS OF A MULTI-WELL VAPOR CHAMBER HEAT SPREADER