自然对流和强制对流中六边形和螺纹形插片的热分析

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摘要

本文研究了六方翅片(1mm和2mm)表面和螺纹翅片上的沟槽传热问题。试验在三种不同的翅片几何形状上进行,有六角形(1mm)槽,六角形(2mm)槽,螺纹翅片(0.5mm)节距,并使用离心鼓风机,测试段,加热器和测试板进行了试验,并获得了在相同空气流速下的温度分布,有效性,效率,因为它在强制对流中进行,并且在不同翅片的自然对流中获得了考虑不同值的相同参数。在强制对流实验中,整个实验过程中气流速率为2.3371 m/sec。在自然对流中,螺纹翅片的效率高达93.89%,六角形(2mm)翅片的效率为28.11%。在强制对流中,螺纹翅片效率最高,为81.83%,六角形(1mm)翅片效率最高,为23.51%。自然对流六方(2mm)深度翅片的换热率为11.41瓦,强制对流六方(1mm)深度翅片的换热率为21.75瓦
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Thermal Analysis on Pin-Fins With Hexagonal & Threaded Geometry In Natural and Forced Convection
In the present work of heat transfer for hexagonal fins (1mm & 2mm) grooves on surface and threaded fin is addressed. 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
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