期刊
APPLIED THERMAL ENGINEERING
卷 157, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2019.03.049
关键词
Vapor chamber; Heat pipe; Thermal performance
资金
- National Key Research and Development Program of China [2016YFB0401502]
- Natural Science Foundation of China [61771204, U1601651]
- Program for Chang Jiang Scholars and Innovative Research Teams in Universities [IRT_17R40]
- Guangdong Innovative Research Team Program [2013C102]
- Science and technology project of Guangdong Province [2016B090918083, 2018A050501013, 2017B090903008]
- Science and Technology Project of Shenzhen Municipal Science and Technology Innovation Committee [GQYCZZ20150721150406]
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology [2017B030301007]
- MOE International Laboratory for Optical Information Technologies
- Guangzhou Key Laboratory of Electronic Paper Displays Materials and Devices [201705030007]
- Leading talents of Guangdong province Program [00201504]
- 111 Project
- Yunnan expert workstation [2017IC011]
This paper proposes a three-dimensional vapor chamber (3D VC) to solve heat dissipation of LED (light-emitting diode) automotive headlamps, which can be installed in a very limited setup space and a high heating load. The proposed 3D VC can be regarded as a combination of a flattened heat pipe and a circular vapor chamber. A test system was implemented to study the effects of different heating modes on thermal performance, power distribution characteristics, the temperature distribution and thermal resistance of the 3D VC. The experimental results show that the thermal performance of the 3D VC by both-sides heating is better than that of the one-side heating under the same total heating load. The 3D VC exhibits a favorable temperature uniformity, and the minimum thermal resistance of the 3D VC is 0.125 degrees C/W at a 50 W heating load.
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