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首页> 外文期刊>Journal of heat transfer: Transactions of the ASME >Flat miniature heat pipes with micro capillary grooves
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Flat miniature heat pipes with micro capillary grooves

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摘要

Flat miniature heat pipes (FMHP's) are shown to be very promising in the cooling of electronic component systems. The investigation presents a detailed experimental and theoretical analysis on maximum heat transfer capabilities of two copper-water FMHP's with diagonal trapezoidal micro capillary grooves and one copper-water FMHP with axial rectangular micro capillary grooves. Maximum heat flux on the evaporator wall of the 120-mm long axial grooved heat pipe, with a vapor channel ross-sectionalarea of approximately 1.5× 12 mm{sup}2 and rectangular grooves of dimensions 0.20 mm wide by 0.42 mm deep, exceeded 90 W/cm{sub}2 in the horizontal orientation and 150 W/cm{sub}2 in the vertical orientation. Theoretical prediction of the capillarylimitation in the horizontal orientation agreed reasonably well with the experimental data.

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