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

  • Bin LiuEmail author
  • Hao Li
  • Kuining Li
  • Qianqian Meng
  • Cheng Yang
  • Chunyun Fu
Research Article - Physics


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 20 W, 30 W, 40 W, 50 W 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 \(1.2~{^{\circ }}\hbox {C}\)\(3~{^{\circ }}\hbox {C}\), and the maximum temperature differences are \(6.3~{^{\circ }}\hbox {C}\)\(9.6~{^{\circ }}\hbox {C}\), which can meet the cooling requirement of the laptop. The best effective heat transport length in the FPHP is 0.094 m.


Temperature uniformity Flat plate heat pipe Heat source position Filling ratio Effective heat transport length 


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© King Fahd University of Petroleum & Minerals 2019

Authors and Affiliations

  • Bin Liu
    • 1
    Email author
  • Hao Li
    • 1
  • Kuining Li
    • 1
  • Qianqian Meng
    • 1
  • Cheng Yang
    • 1
  • Chunyun Fu
    • 2
  1. 1.Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Ministry of Education of PRC, School of Energy and Power EngineeringChongqing UniversityChongqingChina
  2. 2.State Key Laboratory of Mechanical Transmissions, School of Automotive EngineeringChongqing UniversityChongqingChina

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