THEROMODYNAMIC METHODS FOR COST （THEROMODYNAMIC成本的方法）.pdf

THEROMODYNAMIC METHODS FOR COST CALCULATION IN COGENERATION PLANTS Lecturer Eng. Marcel DRAGAN, PhD., Assistant Prof. Eng., Krisztina UZUNEANU, PhD., Lecturer, Eng. Gelu COMAN, PhD. „DUNĂREA DE JOS” UNIVERSITY OF GALAŢI Abstract. This work present the thermoeconomic method used for the analysis thermal-electric plants with steam turbines. Using the result of the exergetic analysis performed are a thermoenergetic equipment with a steam turbine, shortly related to the nonexergetic costs of the equipment, we will make up the exergoeconomic balances on the composing elements. We will determine the specific exergetic costs produced by every element as well as their evolution in the equipment. Keywords: thermal-electric plants, exergetic analysis, thermoeconomic method, exergetic costs; 1. INTRODUCTIONS corresponding to heating. The installation being analyzed aims to provide the following products: One of the specific problems of power plants – electricity to the National Energy System ; producing multiple streams of energy (cogenera- – heat agent for urban heating; tion installations, trigenerative installations ) is The diagram of the system highlighting the represented by the expression of the thermodyna- main features and relevant energy flows is shown mic effi