A differential relationship for the superheated steam pressure and its influencing factors of supercritical boiler

According to the law of energy balance equation,valves' pressure loss formula and Friuli Siegel formula,a differential relationship for the superheated steam pressure and its influencing factors of supercritical boiler was derived.This relationship reflects various factors which impact the change of superheated steam pressure completely.According to the relationship can get the relative sensitivity of these influencing factors which impact the change of superheated steam pressure.This paper makes an example calculation for the 1 000 MW supercritical boiler which has no valves,then compares the various factors' impact on the change of superheated steam pressure and gets the law of each factor how to influence the superheated steam.The conclusions can provide a theoretical basis for the run of supercritical boilers and its related research.