Natural Convection from a Helical Heating Coil to the Surrounding Fluid.

An experimental study is reported on natural convection heat transfer from a helical heating coil to the surrounding fluid. The coil is heated electrically and the surrounding fluid is selected to be water. The range of parameters are: Rayleigh number, ۸۷۹ ?£ Ra ?£ ۷۸۰۱۶۸, Prandtl number, ۴.۲۲ ?£ Pr ?£ ۱۰.۰۲, dimensionless coil diameter,۷.۶۹ ?£ Dave /d ?£ ۱۰.۷۷, number of coil rings, ۲ ?£ N ?£ ۸, and the dimensionless coil pitch ۱/d= ۱. The results are correlated by means of a modified Nusselt number. The proposed correlation is a convenient tool for estimating heat transfer from helical coils.

Keywords:

Natural convection , Free Convection , heat transfer , Helical Coil

Authors

M. H. Kharidar

Mechanical Engineering, Isfahan University of Technology

Majid Molki

Mechanical Engineering, Southern Illinois University

Certificate
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لینک ثابت به این Paper:

https://civilica.com/doc/1415166

شناسه ملی سند علمی:

JR_IJE-9-1_004

تاریخ نمایه سازی: 19 اسفند 1400

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Kharidar, M. H. and Molki, Majid,1375,Natural Convection from a Helical Heating Coil to the Surrounding Fluid.,https://civilica.com/doc/1415166

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Ranking of University of Isfahan

Type of center: دانشگاه دولتی

Paper count: 27,343

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