Research Papers: Energy Conversion/Systems

A Multizone Model of an Economizer in a 600 MW Boiler Unit

[+] Author and Article Information
Wang Jizhou

e-mail: wdnd1324@163.com

Zhang Yanping

e-mail: zyp2817@mail.hust.edu.cn

Li Yu

e-mail: myleslie@163.com

Huang Shuhong

e-mail: shhuang1@mail.hust.edu.cn
School of Energy and Power Engineering,
Huazhong University of Science and Technology,
Wuhan 430074, China

Contributed by the Advanced Energy Systems Division of ASME for publication in the Journal of Energy Resources Technology. Manuscript received April 16, 2012; final manuscript received July 5, 2012; published online October 1, 2012. Assoc. Editor: S. O. Bade Shrestha.

J. Energy Resour. Technol 134(4), 041601 (Oct 01, 2012) (6 pages) doi:10.1115/1.4007253 History: Received April 16, 2012; Revised July 05, 2012

In this paper, a multizone model is developed to investigate the performance of an economizer under all conditions. The model primarily determines the economizer’s distribution parameters under all conditions with a small computational cost. Both the steady-state and dynamic behavior are calculated. These results are shown to be accurate and reliable using a computational fluid dynamic (CFD) model and the operational data obtained from a 600 MW boiler unit in Hubei province, China. Additionally, the model is used to predict the distribution characteristics during some fault conditions.

Copyright © 2012 by ASME
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Fig. 2

Schematic drawing of one zone

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Fig. 3

Graphical user interface of one zone module

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Fig. 4

Multizone model in matlab/simulink

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Fig. 5

Parameter distribution

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Fig. 6

Calculation results of the CFD model

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Fig. 7

Dynamic behavior compared with the LPM

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Fig. 8

Comparison of the heat transfer between the normal and the fault conditions



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