Publicou 8 edições por ano
ISSN Imprimir: 1065-5131
ISSN On-line: 1563-5074
Indexed in
EXPERIMENTAL STUDY ON THERMAL PERFORMANCE OF PULSATING HEAT PIPE WITH Al2O3-DEIONIZEDWATER NANOFLUID AT DIFFERENT ORIENTATIONS
RESUMO
Thermal resistance as a function of heat load and start-up temperature with respect to time have been investigated for a pulsating heat pipe (PHP) at different inclination angles. PHP was made of 1.45 mm inner diameter copper tubes having 6 turns. Al2O3 nanofluid (concentration 0.25%, 0.5, 1.0, 1.25, 1.5, and 2.5% by wt.) with particle size 45 nm at an optimum filling ratio of 50% was used. It is found that as the concentration increases from 0.25% to 1.0% there is considerable decrease in thermal resistance as compared to that of the base fluid but as the concentration increases from 1.25% to 2.5% the thermal performance deteriorates. Optimum concentration of nanoparticles was 1.0% by wt. in base fluid with respect to start-up and thermal resistance for PHP in vertical orientation and 45° inclination, while in horizontal orientation 0.5% by wt. concentration showed the best results. Maximum decrease in thermal resistance with respect to deionized (DI) water was observed at 50Wfor 1.0% nanofluid concentration by wt. at 45° inclination, which was 33.6%. Heat transfer coefficients at evaporator and condenser are also investigated at vertical mode of operation.
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Han Xiaohong, Wang Xuehui, Zheng Haoce, Xu Xiangguo, Chen Guangming, Review of the development of pulsating heat pipe for heat dissipation, Renewable and Sustainable Energy Reviews, 59, 2016. Crossref
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Maneewan Somchai, Punlek Chantana, Chan Hoy Yen, Thongtha Atthakorn, Experimental Investigation of Heat Transfer of Refrigerant Fluid Pulsating Heat Pipe, Applied Mechanics and Materials, 865, 2017. Crossref
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DAVE Chirag, DANDALE Prajwal, SHRİVASTAVA Kushagra, DHAYGUDE Dashrath, RAHANGDALE Kavi, MORE Nilesh, A REVIEW ON PULSATING HEAT PIPES: LATEST RESEARCH, APPLICATIONS AND FUTURE SCOPE, Journal of Thermal Engineering, 2021. Crossref