Thermal performance of flat-shaped heat pipes using nanofluids |
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| Authors: | Maryam Shafahi Vincenzo Bianco Kambiz Vafai Oronzio Manca |
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| Affiliation: | 1. Department of Mechanical Engineering, University of California Riverside, Riverside, CA 92521, USA;2. Dipartimento di Ingegneria Aerospaziale e Meccanica, Seconda Università, degli Studi di Napoli, Via Roma 29, 81031 Aversa (CE), Italy;1. Department of Mechanical Engineering, National Institute of Technology, Tiruchirappalli 620015, Tamil Nadu, India;2. Department of Mechanical Engineering, Bannari Amman Institute of Technology, Erode 638401, Tamil Nadu, India;1. Department of Mechanical Engineering, Karunya University, Coimbatore 641 114, Tamil Nadu, India;2. Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi,126 Bangmod, Tongkru, Bangkok 10140, Thailand;3. The Academy of Science, The Royal Institute of Thailand, Sanam Suea Pa, Dusit, Bangkok 10300, Thailand;1. Green Energy and Environment Research Lab., Industrial Technology Research Institute, Hsinchu 31040, Taiwan;2. Department of Mechanical Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung 80778, Taiwan;3. Department of Mechanical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan |
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| Abstract: | Analytical models are utilized to investigate the thermal performance of rectangular and disk-shaped heat pipes using nanofluids. The liquid pressure, liquid velocity profile, temperature distribution of the heat pipe wall, temperature gradient along the heat pipe, thermal resistance and maximum heat load are obtained for the flat-shaped heat pipes utilizing a nanofluid as the working fluid. The flat-shaped heat pipe’s thermal performance using a nanofluid is substantially enhanced compared with one using a regular fluid. The nanoparticles presence within the working fluid results in a decrease in the thermal resistance and an increase in the maximum heat load capacity of the flat-shaped heat pipe. The existence of an optimum nanoparticle concentration level and wick thickness in maximizing the heat removal capability of the flat-shaped heat pipe was established. |
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