Title: Exergy method of optimisation of a wavy plate indirect evaporative cooler

Authors: A. Abbassi, M. Aliehyaei

Addresses: Mechanical Engineering Department, Amirkabir University of Technology, Hafez Ave, P.O. Box 15875-4413 Tehran, Iran. ' Mechanical Engineering Department, Amirkabir University of Technology, Hafez Ave, P.O. Box 15875-4413 Tehran, Iran

Abstract: The present paper deals with the performance optimisation of a wavy plate surface of indirect evaporative coolers with cooling capacities of 10, 25, 45 kW. Based on the minimum entropy generation rate and by applying a number of geometrical constraints, as well as using a search method, the optimum apparatus|s dimensions and the secondary air discharge and the primary air mass flow rates are calculated. The numerical results show that, to increase the cooling load of an indirect evaporative cooler, the optimisation of the above mentioned parameters by this method can increase energy efficiency by up to 65%.

Keywords: exergy; indirect evaporative cooler; optimisation; sinusoidal wavy plate; entropy generation; energy efficiency.

DOI: 10.1504/IJEX.2004.005562

International Journal of Exergy, 2004 Vol.1 No.3, pp.350 - 362

Published online: 19 Oct 2004 *

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