Affiliation:
1. Institute of Thermal Power Engineering, Cracow University of Technology, Cracow, Poland
Abstract
The paper presents selected results of numerical computations related to
simulations of a supercritical power boiler evaporator operation. A
detailed analysis is carried out of temperature drops on the thickness of
the water-wall tube and the tube fin. A comparison is also made between the
results obtained at the fin division into one and two control volumes. The
tube cross-sections analysed along the tube length and including the fins
are divided into 24 control volumes, for which 2-D transient heat conduction
equations are formulated. The 1-D equations describing the principles of
mass, momentum, and energy conservation are solved on the side of the
working fluid. A convective condition, described by an empirical heat
transfer coefficient, is set on the water-wall tube inner surface. The
developed mathematical model is a distributed parameter model. The
numerical computations are performed for a boiler operating in a power
plant in Poland. The analysis takes account of the non-uniformity of the
furnace chamber thermal load along its height.
Publisher
National Library of Serbia
Subject
Renewable Energy, Sustainability and the Environment
Cited by
6 articles.
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