Publicou 18 edições por ano
ISSN Imprimir: 1064-2285
ISSN On-line: 2162-6561
Indexed in
EXPERIMENTAL STUDY ON NATURAL CONVECTION COOLING OF LED USING A FLAT-PLATE PULSATING HEAT PIPE
RESUMO
Heat dissipation structure is important for high-power LED chips because of a high heat flux. The experimental study of cooling high-power LED (up to 100 W) based on the combination of flat-plate pulsating heat pipe (PHP) and natural convection fins was conducted. The effects of heating power, working fluids, filling ratio (rate of liquid-filled volume to the total volume of channels), configuration parameters, and fin area on the start-up time and the thermal characteristics of the plate PHP were investigated experimentally. The experimental results indicated that cooling by a flat-plate PHP with natural convection fins was effective in lowering the temperature of high-power LED. However, the thermal characteristics of a flat-plate PHP with natural convection cooling possessed large disparity compared to that of forced convection cooling. The optimal filling ratio range was 30% to 50% in this research and the thermal performance of a flat-plate PHP with acetone as a working fluid was better than that with ethanol. Moreover, a flat-plate PHP with a trianglular cross-section channel led to a lower thermal resistance than that with a square cross-section channel. The study of thermal resistance based on channel cross-sectional area was suggested.
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Patel Vivek, Mehta Nirvesh, Mehta Kamlesh, Badgujar Amarish, Mehta Shreya, Bora Nisha, Experimental Investigation of Flat Plate Cryogenic Oscillating Heat Pipe, Journal of Low Temperature Physics, 198, 1-2, 2020. Crossref
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Wang Hai, Qu Jian, Peng Youquan, Sun Qin, Heat transfer performance of a novel tubular oscillating heat pipe with sintered copper particles inside flat-plate evaporator and high-power LED heat sink application, Energy Conversion and Management, 189, 2019. Crossref
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Ayel Vincent, Slobodeniuk Maksym, Bertossi Rémi, Romestant Cyril, Bertin Yves, Flat plate pulsating heat pipes: A review on the thermohydraulic principles, thermal performances and open issues, Applied Thermal Engineering, 197, 2021. Crossref
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Deng Liqiang, Li Yong, Xin Zhifeng, Chen Zhaoshu, Zhou Wenjie, Mamun Abdullah al, Li Bo, Thermal study of the natural air cooling using roll bond flat heat pipe as plate fin under multi-heat source condition, International Journal of Thermal Sciences, 183, 2023. Crossref