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Fabrication and testing of phase change heat sink for high power LED 被引量:1
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作者 向建化 张春良 +2 位作者 江帆 刘晓初 汤勇 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2011年第9期2066-2071,共6页
A novel phase change heat sink was fabricated for packaging cooling of high power light emitting diode (LED). 3D structures as enhanced boiling structure in the evaporation surface were composed of a spiral micro-gr... A novel phase change heat sink was fabricated for packaging cooling of high power light emitting diode (LED). 3D structures as enhanced boiling structure in the evaporation surface were composed of a spiral micro-groove along circumferential direction and radial micro-grooves which were processed by ploughing-extrusion (P-E) and stamping, respectively. Meanwhile, the cycle power of refrigerant was supplied by wick of sintered copper powder on internal surface of phase change heat sink. Operational characteristics were tested under different heat loads and refrigerants. The experimental results show that phase change heat sink is provided with a good heat transfer capability and the temperature of phase change heat sink reaches 86.8 ℃ under input power of 10 W LED at ambient temperature of 20 ℃. 展开更多
关键词 high power light emitting diode phase change heat sink enhanced boiling WICK heat transfer performance
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Heat transfer performance testing of a new type of phase change heat sink for high power light emitting diode 被引量:2
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作者 XIANG Jian-hua ZHANG Chun-liang +2 位作者 ZHOU Chao LIU Gui-yun ZHOU Wei 《Journal of Central South University》 SCIE EI CAS CSCD 2018年第7期1708-1716,共9页
In view of the limitations of solid metal heat sink in the heat dissipation of high power light emitting diode (LED), a kind of miniaturized phase change heat sink is developed for high power LED packaging. First, t... In view of the limitations of solid metal heat sink in the heat dissipation of high power light emitting diode (LED), a kind of miniaturized phase change heat sink is developed for high power LED packaging. First, the fabrication process of miniaturized phase change heat sink is investigated, upon which all parts of the heat sink are fabricated including main-body and end-cover of the heat sink, the formation of three-dimensional boiling structures at the evaporation end, the sintering of the wick, and the encapsulation of high power LED phase change heat sink. Subsequently, with the assistance of the developed testing system, heat transfer performance of the heat sink is tested under the condition of natural convection, upon which the influence of thermal load and working medium on the heat transfer performance is investigated. Finally, the heat transfer performance of the developed miniaturized phase change heat sink is compared with that of metal solid heat sink. Results show that the developed miniaturized phase change heat sink presents much better heat transfer performance over traditional metal solid heat sink, and is suitable for the packaging of high power LED. 展开更多
关键词 miniaturized phase change heat sink three-dimensional microgrooves sintered wick heat transfer performance testing
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Heat Transfer Performance and Structural Optimization of a Novel Micro-channel Heat Sink
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作者 Jianhua Xiang Liangming Deng +3 位作者 Chao Zhou Hongliang Zhao Jiale Huang Sulian Tao 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2022年第2期189-200,共12页
With the advent of the 5G era,the design of electronic equipment is developing towards thinness,intelligence and multi-function,which requires higher cooling performance of the equipment.Micro-channel heat sink is pro... With the advent of the 5G era,the design of electronic equipment is developing towards thinness,intelligence and multi-function,which requires higher cooling performance of the equipment.Micro-channel heat sink is promising for the heat dissipation of super-thin electronic equipment.In this study,thermal resistance theoretical model of the micro-channel heat sink was first established.Then,fabrication process of the micro-channel heat sink was introduced.Subsequently,heat transfer performance of the fabricated micro-channel heat sink was tested through the developed testing platform.Results show that the developed micro-channel heat sink has more superior heat dissipation performance over conventional metal solid heat sink and it is well suited for high power LEDs application.Moreover,the micro-channel structures in the heat sink were optimized by orthogonal test.Based on the orthogonal optimization,heat dissipation performance of the micro-channel radiator was further improved. 展开更多
关键词 MICRO-CHANNEL phase change heat sink heat transfer performance testing Finite element simulation Orthogonal test
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Optimization of three-dimensional boiling enhancement structure at evaporation surface for high power light emitting diode 被引量:2
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作者 Jian-hua XIANG Chao ZHOU +3 位作者 Chun-liang ZHANG Gui-yun LIU Cong-gui CHEN Wei ZHOU 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2018年第7期1405-1413,共9页
A theoretical model of phase change heat sink was established in terms of thermal resistance network. The influence of different parameters on the thermal resistance was analyzed and the crucial impact factors were de... A theoretical model of phase change heat sink was established in terms of thermal resistance network. The influence of different parameters on the thermal resistance was analyzed and the crucial impact factors were determined. Subsequently, the forming methods including ploughing-extrusion and stamping method of boiling enhancement structure at evaporation surface were investigated, upon which three-dimensional microgroove structure was fabricated to improve the efficiency of evaporation. Moreover, the crucial parameters related to the fabrication of miniaturized phase change heat sink were optimized. The heat transfer performance of the heat sink was tested. Results show that the developed phase change heat sink has excellent heat transfer performance and is suitable for high power LED applications. 展开更多
关键词 high power LED phase change heat sink ploughing-extrusion boiling enhancement three-dimensional microgroove
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