Effects of Heat Source Positions on Temperature Uniformity of Large Vapor Chamber Antigravity Flat Plate Heat Pipe

摘要

In this paper, a large vapor chamber antigravity flat plate heat pipe (FPHP) for laptop cooling is proposed. Effects of heat source positions on temperature uniformity of the FPHP are studied experimentally. The temperature uniformity of the large vapor chamber antigravity FPHP is analyzed on the conditions of different heat source positions (six positions), different heat power inputs of 20W, 30W, 40W, 50W and different liquid filling ratios of 35%, 45%, 55%. The experimental results show that the standard deviation and the maximum temperature difference at the best filling rate 45% are lower than those of other filling rates, and the standard deviations are 1.2 which can meet the cooling requirement of the laptop. The best effective heat transport length in the FPHP is 0.094m.