Thermoeconomic design optimisation of a refrigeration evaporator
by Tahar Khir, Rahim K. Jassim, Galal M. Zaki
International Journal of Exergy (IJEX), Vol. 5, No. 4, 2008

Abstract: An exergoeconomic optimisation analysis is presented considering the main three component exergy destruction: the pressure losses I^ΔΡ, temperature difference I^ΔΤ and specific humidity gradient I^Δω. The sum of the annual capital cost, Z_ev, and the cost of compensation for the total exergy destruction is taken as the optimisation objective function. The tube diameter, the air velocity and the fin thickness are optimised using the Hooke and Jeeves method. The results show that the minimum cost of the optimum evaporator design parameters is obtained when the tube diameter, air velocity and fin thickness are 1/2'', 3 m/s and 0.1 mm respectively.

Online publication date: Sun, 29-Jun-2008

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