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Enhanced heat transfer of Carbon Nanotube Nanofluid Microchannels Applied on Cooling Gallium Arsenide Cell

Journal of Thermal Science 2020年第6期29卷 1475-1486页

作者： ZHANG Huiying YAN Suying WANG Tao WU Yuting ZHAO Xiaoyan ZHAO Ning College of Energy and Power Engineering Inner Mongolia University of TechnologyHohhot 010051China College of Environmental and Energy Engineering Beijing University of TechnologyBeijing 100124China

Carbon nanotube nanofluids have wide application prospects due to their unique structure and excellent *** this study,the thermal conductivity properties of carbon nanotube nanofluids and SiO2/water nanofluids were compared and analyzed experimentally using different preparation *** physical properties of nanofluids were tested using a Malvern Zetasizer Nano Instrument and a Hot Disk Thermal Constant *** with field synergy theory analysis of the heat transfer performance of nanofluids,results show that the thermal conductivity of carbon nanotube nanofluids is higher than that of SiO2/water nanofluids,and the thermal conductivity of nanofluid rises with the increase of mass fraction and ***,the synergistic performance of carbon nanotube nanofluids is also superior to that of SiO2/water *** the mass fraction of the carbon nanotube nanofluids is 10%and the SiO2/water nanofluids is 8%,their field synergy numbers and heat transfer enhancement factors both reach *** the perspective of the preparation method,the thermal conductivity of nanofluids dispersed by high shear microfluidizer is higher than that by ultrasonic *** result provides some reference for the selection and use of working substance in a microchannel cooling concentrated photovoltaic and thermal(CPV/T)system.

关键词： concentrated photovoltaic solar cell thermal conductivity carbon nanotube nanofluids field synergy principle heat transfer property

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heat transfer and Acoustic Properties of Open Cell Aluminum Foams

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Journal of Materials Science & Technology 2008年第1期24卷 1-6页

作者： Bokhyun KANG Kiyoung KIM Byungmin LEE Jaesoo NOH Department of Materials Engineering Korea University of Technology and Education 307 Gajeonri Byungchungmyun Cheonan Choongnam 330-708 Korea

The aluminum open cell foams have been prepared by the conventional precision casting method to investigate the thermal and acoustic properties.A water heating system and silencers were organized as a first step for its *** temperature increase between the top and bottom of the foam became larger as the cell size increased in the heat transfer *** absorption ratio of the close cell foams was 60%-100%, whereas the open cell aluminum foam showed only 10%-20% of sound absorption at low *** the prototype electric water heater manufactured by combining aluminum open cell foam with a heater was heated to 100-400℃,the highest temperature of water was in the range of 16-46~*** suggests that there could be potential for this type of heater to be used as a commercial electric water *** silencer made with the aluminum open cell foam was applied to exit of exhaustion side at air pressure *** silencing effect of open-celled aluminum foam showed that the noise level went down by introducing smaller cell size foam.

关键词： Open cell aluminum foam heat transfer property Sound absorption Electricwater heater Sound silencer

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