Calculation And Numerical Simulation On Radiation Heating Surface Temperature Of Supercritical Boiler

This subject is mainly to study surface temperature of supercritical bioler radiation heating surface. Analyzing at first that the sector model of hearth radiation heating surface, and work out the software which calculate the wall heat loading; Then according to the pressure and state of working dielectric, have summarized the calculation type of coefficient of heat transfer under all kinds of work conditions; Analyzing finally that calculates models of pipe wall in theory, introducing and comparing analytic solution and numerical solution of the model. Regard one factory 1000MW supercritical boiler as the research object, calculate the heat loading of the sector pipe wall under its different unit load by the software compiled, select proper the calculating type of coefficient of heat transfer, calculate and get the analytic solution wall temperature; And then numerical simulating the heat loading of radiation heating surface and the temperature distribution by 2 kinds mathematical software. Regarded numerical solution as the helpful supplement of analytic solution, analyzing the heat loading and the temperature distribution, pointing out the dangerous point of radiation heating surface.