Integrated optimization of thermal power part of PWR nuclear power units to increase their efficiency

Abstract

The purpose of the work is carrying out complex optimization studies of the thermal power part of the nuclear unit, obtaining optimal thermodynamic, flow and design parameters with regard to energy efficiency. The study employs improved at Melentiev Energy Systems Institute software and computer systems for construction of mathematical models of various power plants, methods of mathematical modeling of heat power plants, optimization methods of their parameters. The design diagram of the thermal power part of nuclear units is developed. Based on the developed diagram the structure of new processes and elements is selected. The variability of the optimized methods, restrictions on thermodynamic and design parameters and optimization criteria are shown. The optimal design solutions for the elements, diagrams and marketability conditions of plants are obtained taking into account energy efficiency of nuclear power plant operation. The obtained mathematical model of the thermal power part of the nuclear unit with a pressurized water reactor PWR-1000 considering additional factors (variation of PWR thermal power) will enable future studies of optimum combinations of the parameters of the 1^st and 2^nd circuits of the power unit taking into account energy and economic efficiency of nuclear power plants.