EXPERIMENTAL ANALYSIS OF NATURAL CONVECTION HEAT TRANSFER FROM NOTCHED FIN

Abstract

Cooling of a body is always been a challenge as unwanted heat generated can hinder the working of system.
Implementing proper cooling technique dispatch the heat. This cooling method should by cheap, effective and
feasible. Using of extended surfaces, fins, is most commonly used method to dispatch waste heat. Our project
‘Experimental Analysis of Natural Convection Heat Transfer from Notched Fin’ deals with increasing the efficiency
of fins by providing the notch.The various types of fins used are longitudinal fins, radial fins, pin fins etc. Here we
manufactured fins with notch to increase heat transfer coefficient for rectangular fins. We also experimentally prove
that how heat transfer coefficient increases with increase in notch up to optimum notch size. For this we keep the
area of fins constant i.e. we compensate area by adding the area of material that we have removed for notch. 9 fin
array is arranged using a metal block that also holds the heating element. Experimental analysis is done for unnotched fins, 10% notched, 20% notched and 30% notched at 3 different input power supply. Temperatures and heat
transfer results obtained from the experiment are as expected and hence heat transfer coefficient is maximum for
30% among 4 types of fins we test.