Coupling Design of Tower Concentrated Solar Power System and Coal-Fired Power Generation

A solar-coal collaborative complementary generation system is constructed by selecting the tower concentrated solar power system using water as working fluid, coupled with the water feeding and condensation system of conventional thermal power plant boiler to replace part of the function of high and low pressure heat exchangers. Based on the requirement of efficiency improvement without increasing the capacity, the system design and economic analysis are conducted. The new scheme can reduce the amount of regenerative steam in steam-water system, so that the main steam flow rate is reduced, the coal consumption is deducted, and the operation efficiency of the unit can be improved. Furthermore, with this new scheme, the pollutant emission is reduced as well and the comprehensive utilization of clean energy is finally achieved. The system provides a reference for the selection of other solar-coal coupling system loads and system design.