A 1000MW ultra-supercritical secondary reheat unit Energy consumption analysis of thermodynamic system

Abstract

Taking the thermodynamic system of a 1000MW ultra-supercritical secondary reheating unit as the research object, the modeling energy consumption analysis was carried out, and the spatial distribution of energy consumption was determined, so as to provide a scientific basis for the operation optimization and energy-saving transformation of the unit. The analysis results show that: Boiler is one of the largest equipment factory irreversible loss, make up the loss by 85.1% of the total loss of the system, although the number of its external loss is not big but internal loss is very big, and the loss is high grade of energy, the number of the steam turbine cold source loss although large irreversible loss is not big but the grade is not high, its loss make up only 2.32% of the total loss system.

Keywords

• ultra-supercritical
• thermodynamic system
• secondary reheat unit
• energy consumption analysis
• non reversible loss
• purpose (exergy) efficiency
• exergy loss coefficient