Design, fabrication and thermal performance of a novel ultra-thin loop heat pipe with printed wick structure for mobile electronics cooling
Chen, Anqi 1Jiang, Fan 1Chen, Jeffrey 2Zhu, Yuan 1Dong, Jiajia1
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作者信息
1. Southern Univ Sci & Technol, Sch Microelect, Shenzhen 518055, Peoples R China
2. NeoGene Thermal Management Technol Co Ltd, Guangzhou 510700, Peoples R China
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Abstract
Ultra-thin loop heat pipe (UT-LHP) is a high-performance heat transfer component that satisfies the requirement of thermal management problems in miniaturized electronic devices. In this study, a novel UT-LHP with capillary wick structures is developed for mobile electronics cooling. By using a novel print wick structuring process on copper substrates, the total thickness of the UT-LHP can be decreased to only 0.3 mm. The effects of the filling ratio and wick structure distribution have been investigated to optimize the vapor-liquid circulation in the UTLHP. The heat transfer performance of the UT-LHP has been evaluated under different heat loads and configurations. The minimal thermal resistance of the UT-LHP is 1.03 degrees C /W at a heat load of 3 W which corresponds to a heat flux of 3 W/cm(2). It is confirmed that the proposed UT-LHP can transfer a heat load of up to 3 W with low sensitivity to gravity. The proposed novel UT-LHP is a promising thermal solution for high-performance mobile electronic devices.
NSTL
Elsevier