Dynamic simulation for absorbed heat of super-heater in supercritical unit boilers

WANG Weishu; WANG Xin

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Dynamic simulation for absorbed heat of super-heater in supercritical unit boilers

Thermal Power Generation Issue 2, (2017)

更新时间：2025-09-28

- Dynamic simulation for absorbed heat of super-heater in supercritical unit boilers
- 作者机构：
  
  华北水利水电大学热能工程研究中心,河南,郑州,450011
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK223
- Published Online：01 March 2017，
  
  Published：2017
- 稿件说明：
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WANG Weishu, WANG Xin. Dynamic simulation for absorbed heat of super-heater in supercritical unit boilers[J]. Thermal Power Generation, 2017, (2).
DOI：

WANG Weishu, WANG Xin. Dynamic simulation for absorbed heat of super-heater in supercritical unit boilers[J]. Thermal Power Generation, 2017, (2). DOI：

摘要

为研究超临界机组直流锅炉过热器调峰过程热力特性及安全性

基于MATLAB/Simulink仿真平台对超临界600 MW机组直流锅炉建立模型并进行数值仿真

分析了锅炉在35％～100％最大连续蒸发量时

过热器吸热量动态特性。研究结果表明:随着锅炉蒸发量增大

炉膛出口和后屏过热器出口烟气温度及对流过热器出口蒸汽温度逐渐升高

而对流过热器出口烟气温度趋于稳定；对流过热器对流吸热量增速最快

变化幅度最大

而对流过热器辐射吸热量相对较小；过热器附加受热面对流吸热量大于辐射吸热量

两侧水冷壁受热面吸热量大于炉顶受热面吸热量；对流过热器区域附加受热面两侧水冷壁对流吸热量最大

炉顶受热面吸收的炉膛辐射热量最小

与后屏过热器区域附加受热面相比

对流吸热量远大于辐射吸热量。

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