Fin Efficiency of Serrated Fins : (2nd Report, Approximation Equation for Theoretical Fin Efficiency)

Abstract

An analytical solution for the theoretical fin efficiency of serrated fins was derived in the 1st report. This solution was given as a function of the modified Bessel functions, therefore, a compurter having any solver for the modified Based functions is needed to calculate the fin efficiency. In this report, an approximation equation is presented for the theoretical fin efficiency, which enables the calculation with a pocked calculator. The deviation of the calculated result from the analytical solution is within ±1.5% for the industrially practical ranges.