METHOD FOR CALCULATION OF FIN HEAT TRANSFER WITH INTENNAL HEAT GENERATION SUBJECT TO NONLINEAR SURFACE HEAT EXCHANGE

摘要

An annular disc fin (ADF) is a common choice to enhance heat from a cylindrical primary surface. In nuclear applications, heat transfer from the fin surface is due to convection and radiation, and heat also generated in the fin. With radiation and a variation of heat generation, an analysis was presented. For the heat generation, it is suggested to determine the fin heat transfer by integral approach and an integro-differential formulation to the differential transform function was implemented successfully. The effects of heat generation on the fin performance parameters were studied under a design condition. A new optimization study with variation of heat generation was carried out to provide a superior aspect of design of annular fins. For the simplification of analysis to a designer, approximate methods have also been developed for heat generation as a linear function of temperature.