Exergetic Optimization of the Heat Recovery Steam Generators by Imposing the Total Heat Transfer Area

Authors : VictorEduard Cenuşă, Adrian Badea, Michel Feidt, Riad Benelmir

Pages : 149-156

View : 10 | Download : 11

Publication Date : 2004-09-01

Article Type : Research Paper

Abstract :The paper presents an original and fast method for the heat recovery steam generator insert ignore into journalissuearticles values(HRSG); exergetic optimization. The objective is maximizing the exergy transfer to the water / steam circuit. The proposed approach, different from the classical method that fixes the pinch point, is essentially thermodynamic but it considers also the economics by imposing the total heat transfer area of HRSG. The HRSG may have one or two steam pressures, without reheat. The input data from the gas turbine are: the mass flow rate, the temperature and the molar composition of flue gases. The results are the optimum pressures of the superheated steam. The numerical computations were realized in Delphi programming utility. The obtained results are in agreement with the recent literature.
Keywords : heat recovery steam generator HRSG, numerical model, exergetic optimization, imposed total heat transfer area