Estimation of the average heat transfer coefficient for a long horizontal cylindrical fin rod

Abstract

The physical situation considered in this study is a horizontal, long rod of cylindrical cross-section with one end maintained at a constant elevated temperature. This paper examines the assumption that the heat transfer coefficient along the rod is constant and proposes a simple approach to estimate an average total heat transfer coefficient. The approach makes use of a published correlation for natural convection from a horizontal, isothermal cylinder and a simple model for the radiative heat transfer. A comparison is made to experimental results.