HEAT TRANSFER ENHANCEMENT IN NOTCHED FINN ARRAY COATED WITH NANOMATERIAL
Author(s):
MAHEEP KUMAR UPADHYAY, ASHISH RANJAN, ALISHA RAIZADA, Dr DG KUMBHAR, Dr KB SUTAR
Keywords:
convection; fins; CFD; nanomaterial; HTC-Heat Transfer Coefficient.
Abstract
This paper aims study under natural mode of heat convection. It is a mechanism in which the motion of fluid is not generated through external source external source like blower, pump etc. but only due to the density differences in the fluid occurring because of the change in temperature. Natural convection cannot perform in inertial environments where other heat transfer mechanisms are required to stop the overheating of the heating component. Fins are the extended surfaces from an object so as to increase the rate of heat transfer by increasing convection. In addition to fins, nanomaterial coating has been provided in this paper which enhances the rate of heat transfer. Nanomaterials are materials which have nanoscale dimensions in case the surface or interface properties dominate the bulk properties. A nanoparticle is a small particle ranging 1-100 nanometers in size. There unique properties like small size, high surface area to volume ratios make them excel in our research area. The experimental setup consisted of a base plate, cartridge heater and notched fins. We took 3 different kinds of notched fin surfaces for experimentation purpose that is the plain fins, triangular fins and semi-circular fins, while choosing the dimensions in a way that the surface area of all the types of fins is kept constant, for better experimental study. The fin material is Aluminum and the nanomaterial selected for coating purpose is graphene. Results were analyzed for two cases, one for fins with nanomaterial coating and the other for fins without coating. The CFD analysis is done on ANSYS FLUENT software, which showed that without coating of fins the maximum temperature reached at tip for extreme outside fins is around 64.20C ,the fins placed exactly above the (two) heaters, shows higher temperatures around 64.80C,the fin which at middle position also shows the higher temperature of 64.80C, the average HTC found on Fin surface is 7 W/m2K and in case when the fins were coated with nanomaterial - the maximum temperature reached at tip for extreme outside fins is around 64.50C ,the fins placed exactly above the (two) heaters, shows higher temperatures around 65.10C,the fin which at middle position also shows the higher tempe
Article Details
Unique Paper ID: 152737

Publication Volume & Issue: Volume 8, Issue 4

Page(s): 312 - 320
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