Journal Title : International Journal of Modern Trends in Engineering and Science

Author’s Name : K P Shankar | N Thirumalaisamy

Volume 02 Issue 12  Year 2015 

ISSN no: 2348-3121

Page no: 101-104

Abstract  The performance of the heat exchanger is investigated in this paper. There is a possible way to increase the rate of heat transfer by which the fins are attached to the periphery of a tube. As per the convective law of heat transfer, the surface area is directly proportional to the heat transfer rate such that when the contact area is made to enlarge, the heat transfer will be more. For more heat transfer rate, the hot water tube is designed as a frustum of a cone and also the fins are attached. This frustum tube has large lateral surface area and makes large amount of heat transfer. Since the usage of frustum tube, the velocity of hot water flow will be increased. Thus it reduces fouling factor and improves effectiveness of the heat exchanger. As the thermal conductivity of copper is more (k = 386 W/m K), it is used as a better heat transferring device such that the hot water tube is of copper material. Even though this heat exchanger is subjected to repeated use, it never fails under the formation of scale and gives more effectiveness for a long time.

Keywords Heatexchanger; Flow; Fins; Convection; Fouling factor


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