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The test has been performed on three different fin geometries having hexagonal (1mm)groove, hexagonal(2mm)groove, threaded fin(0.5mm)pitch and test performed by using a centrifugal blower, test section, heater and test panel and Results are obtained for temperature distribution, effectiveness, efficiencies at a same flow rate of air as it was conducted in forced convection and the same parameters considered for different values are obtained for natural convection with different fins as well. In this experiment for forced convection, the airflow rate is constant i.e, 2.3371 m/sec throughout the experiment. In natural convection, efficiency for the threaded fin is high with 93.89% and effectiveness of hexagonal(2mm)depth fin is 28.11. In forced convection, the efficiency of the threaded fin is high with 81.83% and effectiveness of hexagonal(1mm)depth fin is high with 23.51 was recorded. The heat transfer rate is higher in natural convection is hexagonal(2mm)depth fin with 11.41 watts and 21.75 watts in forced convection with hexagonal(1mm)depth fin", "lang": "en" }, "license": { "url": "https://creativecommons.org/licenses/by/4.0", "start": "2020-08-07", "applies_to": "vor" }, "references": [ { "key": "ref1", "doi": "10.1109/6144.846768", "unstructured": "Hani A. El-Sheikh and Suresh v. Garimella, June 2000, Enhancement of air jet impingement Heat Transfer Using Pin-Fin Heat Sinks, IEEE Transactions on Components and Packaging Technology, VOL. 23, No.2" }, { "key": "ref2", "doi": "10.1109/itherm.1998.689579", "unstructured": "Denpong Soodphakdee, MasudBehnia, and David Watabe Copeland, 2001, A Comparison of Fin Geometries for Heat sinks in Laminar Forced Convection: Part I–Round, Elliptical, and Plate Fins in Staggered and In-line Configurations. The International Journal of Microcircuits and Electronic Packaging, Volume 24, Number 1, First Quarter, (ISSN1063-1674)" }, { "key": "ref3", "doi": "10.1016/s0735-1933(01)00266-4", "unstructured": "O. N. Sara, S. Yapici, M Yilmaz, 2001, Second law analysis of rectangular channels with square pin-fins, Int. comm…Heat and mass transfer Vol 28. No. 5.pp 617-630" }, { "key": "ref4", "doi": "10.1016/s0196-8904(02)00185-1", "unstructured": "O. N. Sara, 2003, Performance analysis of rectangular ducts with staggered square pin fins, Energy Conversion and Management 44:1787-803" }, { "key": "ref5", "doi": "10.1016/j.ijheatmasstransfer.2005.03.017", "unstructured": "YoavPeles, Ali Kosar, Chandan Mishra, Chih-Jung Kuo, Brandon Schneider, 2005, Convective heat transfer across a pin fin micro heat sink, International Journal of Heat and Mass Transfer 48 3615-3627.S" }, { "key": "ref6", "doi": "10.1016/j.ijheatmasstransfer.2005.07.001", "unstructured": "N. Sahitietal, F. Durst, A. Dewan, 2005, Heat transfer enhancement by pin elements, International Journal of Heat and Mass Transfer 48 4738-4747" }, { "key": "ref7", "doi": "10.1115/1.2137760", "unstructured": "Ali Kosar and YoavPeles, February 2006, Thermal-Hydraulic Performance of MEMS-based Pin Fin Heat sinks, Journal of Heat Transfer, ASME, Vol. 128/121" }, { "key": "ref8", "doi": "10.1016/j.enconman.2007.04.020", "unstructured": "PaisarnNaphon, AnusornSookhasem, 2007, Investigations on heat transfer characteristics of tapered cylinder pin fin heat sinks, 0196-8904/$ - see front matter 2007 Published by Elsevier Ltd.doi: 10.1016/j.enconman.2007.04.020" }, { "key": "ref9", "unstructured": "Pitchandi K, Natarajan E, December 2008, Entropy Generation in Pin Fins of Circular and Elliptical cross-sections in Forced convection with Air, Int. J, of Thermodynamics Vol. 11 (No. 4), pp.161-171" }, { "key": "ref10", "unstructured": "Ahmad Khoshnevis, FaramarzTalati, MaziyarJalaal, Esmaeil; Esmaeilzadeh, May 2009, Heat Transfer Enhancement of Slot and Hole Shape Perforations In Rectangular Ribs of a 3-D Channel, 17th Annual (International) Conference on Mechanical Engineering–ISME2009, University of Tehran, Iran" }, { "key": "ref11", "doi": "10.1615/ichmt.2009.heattransfgasturbsyst.70", "unstructured": "GongnanXie, BengtSunden, Lieke Wang and EsaUtriainien, August 2009, Augmented heat transfer of an internal blade tip by full or partial arrays of pin-fins, Int. Symp. on Heat Transfer in Gas Turbine Systems 9-14, Antalya, Turkey" }, { "key": "ref12", "unstructured": "Abdullah H. Alyssa, Ayman M. Maqableh and ShathaAmmourah, October 2009, Enhancement of natural convection heat transfer from a fin by rectangular perforations with an aspect ratio of two, International Journal of Physical Sciences Vol. 4 (10), pp. 540-547" }, { "key": "ref13", "doi": "10.1007/s10483-008-0807-x", "unstructured": "Abdullah H. Alessa and Mohammad q. Al-Odat, 2009, Enhancement of natural convection heat transfer from a fin by triangular perforations of bases parallel and toward its base. The Arabian Journal for Science and Engineering, Volume 34, Number 2B" }, { "key": "ref14", "doi": "10.1115/1.4000878", "unstructured": "Santosh Krishnamurthy, YoavPeles, Journal of Heat Transfer, APRIL 2010, Flow Boiling Heat Transfer on Micro Pin Fins Entrenched in a Microchannel, ASME, and Vol.132/041007-1" }, { "key": "ref15", "unstructured": "S. H. Barhatte, M. R. Chopade, V. N. 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The test has been performed on three different fin geometries having hexagonal (1mm)groove, hexagonal(2mm)groove, threaded fin(0.5mm)pitch and test performed by using a centrifugal blower, test section, heater and test panel and Results are obtained for temperature distribution, effectiveness, efficiencies at a same flow rate of air as it was conducted in forced convection and the same parameters considered for different values are obtained for natural convection with different fins as well. In this experiment for forced convection, the airflow rate is constant i.e, 2.3371 m/sec throughout the experiment. In natural convection, efficiency for the threaded fin is high with 93.89% and effectiveness of hexagonal(2mm)depth fin is 28.11. In forced convection, the efficiency of the threaded fin is high with 81.83% and effectiveness of hexagonal(1mm)depth fin is high with 23.51 was recorded. 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In natural convection, efficiency for the threaded fin is high with 93.89% and effectiveness of hexagonal(2mm)depth fin is 28.11. In forced convection, the efficiency of the threaded fin is high with 81.83% and effectiveness of hexagonal(1mm)depth fin is high with 23.51 was recorded. 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The test has been performed on three different fin geometries having hexagonal (1mm)groove, hexagonal(2mm)groove, threaded fin(0.5mm)pitch and test performed by using a centrifugal blower, test section, heater and test panel and Results are obtained for temperature distribution, effectiveness, efficiencies at a same flow rate of air as it was conducted in forced convection and the same parameters considered for different values are obtained for natural convection with different fins as well. In this experiment for forced convection, the airflow rate is constant i.e, 2.3371 m/sec throughout the experiment. In natural convection, efficiency for the threaded fin is high with 93.89% and effectiveness of hexagonal(2mm)depth fin is 28.11. In forced convection, the efficiency of the threaded fin is high with 81.83% and effectiveness of hexagonal(1mm)depth fin is high with 23.51 was recorded. The heat transfer rate is higher in natural convection is hexagonal(2mm)depth fin with 11.41 watts and 21.75 watts in forced convection with hexagonal(1mm)depth fin", "lang": "en" }, "license": { "url": "https://creativecommons.org/licenses/by/4.0", "start": "2020-08-07", "applies_to": "vor" }, "references": [ { "key": "ref1", "doi": "10.1109/6144.846768", "unstructured": "Hani A. El-Sheikh and Suresh v. Garimella, June 2000, Enhancement of air jet impingement Heat Transfer Using Pin-Fin Heat Sinks, IEEE Transactions on Components and Packaging Technology, VOL. 23, No.2" }, { "key": "ref2", "doi": "10.1109/itherm.1998.689579", "unstructured": "Denpong Soodphakdee, MasudBehnia, and David Watabe Copeland, 2001, A Comparison of Fin Geometries for Heat sinks in Laminar Forced Convection: Part I–Round, Elliptical, and Plate Fins in Staggered and In-line Configurations. 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