Author(s)

Cheng Hui

Corresponding Author

Cheng Hui

Abstract

This paper takes the preparation project of high-efficiency ultra-supercritical secondary reheat 1000MW unit of Guohua Beihai Power Plant as the research object, takes the existing mature boiler and steam turbine high-temperature material as the boundary condition of selection, analyzes and compares the thermal economy and investment economy of the unit under different steam parameters, and thus determines the steam parameters. The cold end optimization analysis was carried out. This paper discusses the ways and methods to reduce the irreversible loss of temperature difference heat transfer and improve the overall energy efficiency of the steam turbine reheat system. The author has carried on the detailed analysis here, in order to provide the reference basis.

Keywords

Ultra-Supercritical, Steam Turbine, Thermal Economy, The Heat Transfer Temperature Difference