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
. A text book of “HEAT AND MASS TRANSFER” written by “RAJPUT”.
. White, F.M. ‘Heat and Mass Transfer’ © 1988 Addison-Wesley Publishing Co. pp. 602–604.
. Heat Exchangers Kevin D. Rafferty, Gene Culver GeoHeat Center, 1996–2001 Last Accessed 17/3/08.
. E.A.D.Saunders (1988). Heat Exchangers:Selection Design And Construction Longman Scientific and Technical.