Performance analysis of two stage combined heat pump system based on thermoeconomic optimization criterion

A thermoeconomic performance analysis based on a new kind of optimization c riterion has been performed for a two stage endoreversible combined heat pu mp cycle model. The optimal performances and design parameters that maximiz e the objective function (heating load per unit total cost) are investigate d. The optimal temperatures of the working fluids, the optimum performance coefficient, the optimum specific heating load and the optimal distribution of the heat exchanger areas are determined in terms of technical and econo mical parameters. The effects of the economical parameter on the global and optimal performances have been discussed. (C) 2000 Elsevier Science Ltd. A ll rights reserved.