Abstract
Fin efficiency of serrated fins was analyzed and an analytical solution of the theoretical fin efficiency was derived in the form of a function of modified Bessel functions. Furthermore, an approximate equation has been given which enables one to calculate the theoretical fin efficiency with a pocket calculator with an accuracy of - 1.5%. In the analysis of the theoretical fin efficiency, however, two assumptions were employed, i.e., uniform heat transfer coefficient over the fin surface and thermal insulation at the end surface of the segmented sections. To compensate for these assumptions, a correction factor was introduced and determined experimentally. Using this correction factor, together with the theoretical fin efficiency, the actual fin efficiency can be estimated for serrated fins of various fin geometries, including plain fins.
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