Enhanced Heat Transfer of Carbon Nanotube Nanofluid Microchannels Applied on Cooling Gallium Arsenide Cell
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https://doi.org/10.1007/s11630-020-1303-5
Article ID: 1003-2169(2020)00-0000-00
Enhanced Heat Transfer of Carbon Nanotube Nanofluid Microchannels Applied on Cooling Gallium Arsenide Cell ZHANG Huiying1, YAN Suying1*, WANG Tao1, WU Yuting2, ZHAO Xiaoyan1, ZHAO Ning1 1. College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, China 2. College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China © Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract: Carbon nanotube nanofluids have wide application prospects due to their unique structure and excellent properties. In this study, the thermal conductivity properties of carbon nanotube nanofluids and SiO2/water nanofluids were compared and analyzed experimentally using different preparation methods. The physical properties of nanofluids were tested using a Malvern Zetasizer Nano Instrument and a Hot Disk Thermal Constant Analyzer. Combined 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 temperature. Moreover, the synergistic performance of carbon nanotube nanofluids is also superior to that of SiO2/water nanofluids. When 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 maximum. From the perspective of the preparation method, the thermal conductivity of nanofluids dispersed by high shear microfluidizer is higher than that by ultrasonic dispersion. This result provides some reference for the selection and use of working substance in a microchannel cooling concentrated photovoltaic and thermal (CPV/T) system.
Keywords: concentrated photovoltaic solar cell, thermal conductivity, carbon nanotube nanofluids, field synergy principle, heat transfer property
1. Introduction Global use of high-carbon and high-pollution systems to generate energy has required massive combustion of fossil fuel. As the use of renewable energy becomes increasingly critical, an energy transition is taking place worldwide [1]. Solar photovoltaic technology contains significant potential as a source of future energy, and is predicted to contribute significantly to sustainable development by within the next 35 years [2]. Concentrated solar energy applications using Fresnel lenses can
Received: Oct 07, 2019
AE: MING Tingzhen
be used as an effective means of fully utilizing solar light [3]. However, technology can significantly increase the temperature of the photovoltaic cell, which may cause problems in the solar photovoltaic system. After the solar cell transforms the solar irradiance into the electrical power, the remaining part will turn into thermal energy, which will present a c
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