Open AccessDistributed parameter modeling and thermal analysis of a spiral water wall in a supercritical boiler
Author(s) -
Shu Zheng,
Zixue Luo,
Huaichun Zhou
Publication year - 2013
Publication title -
thermal science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.339
H-Index - 43
eISSN - 2334-7163
pISSN - 0354-9836
DOI - 10.2298/tsci1305337z
Subject(s) - supercritical fluid , materials science , boiler (water heating) , heat transfer coefficient , mechanics , heat flux , heat transfer , thermal , thermodynamics , spiral (railway) , mechanical engineering , physics , engineering
In this paper, a distributed parameter model for the evaporation system of a supercritical spiral water wall boiler is developed based on a 3-D temperature field. The mathematical method is formulated for predicting the heat flux and the metal-surface temperature. The results show that the influence of the heat flux distribution is more obvious than that of the heat transfer coefficient distribution in the spiral water wall tube, and the peak of the heat transfer coefficient decreases with an increment of supercritical pressure. This distributed parameter model can be used for a 600 MW supercritical-pressure power plant
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