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http://dx.doi.org/10.5370/JEET.2014.9.6.1900

A Water-Wall Model of Supercritical Once-Through Boilers Using Lumped Parameter Method  

Go, Geon (school of Electrical and Electronic Engineering, Chung-Ang University)
Moon, Un-Chul (School of Electrical and Electronic Engineering, Chung-Ang University)
Publication Information
Journal of Electrical Engineering and Technology / v.9, no.6, 2014 , pp. 1900-1908 More about this Journal
Abstract
This paper establishes a compact and practical model for a water-wall system comprising supercritical once-through boilers, which can be used for automatic control or simple analysis of the entire boiler-turbine system. Input and output variables of the water-wall system are defined, and balance equations are applied using a lumped parameter method. For practical purposes, the dynamic equations are developed with respect to pressure and temperature instead of density and internal energy. A comparison with results obtained using APESS, a practical thermal power plant simulator developed by Doosan Heavy Industries and Construction, is presented with respect to steady state and transient responses.
Keywords
Dynamic modelling; Supercritical once-through boiler; Water wall;
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