Abstract

At present, miniature heat pipes are widely used for cooling systems of mobile PCs. This paper presents an overview of the development of miniature heat pipes (MHP) with a sintered copper wick with emphasis to different ways of heat pipe wick optimization. Several designs of cylindrical heat pipes with 4-, 5-, and 6-mm outer diameter and 200-mm length, which are the most attractive for the CPU cooling system, have been tailored, tested, and compared to theoretical values in this study to evaluate its thermal performances. A new design of 4and 5-mm-outer diameter miniature copper heat pipes with innovative wicks is suggested as a promising candidate for present and future cooling systems of high-power mobile PC platforms.

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