CALCULATION OF MINIMUM WALL TEMPERATURE AND INLET AIR TEMPERATURE OF REGENERATIVE AIR HEATER

YAN Wei-ping1; HUANG Jing-li1; LI Jun1; GAO Bao-tong2(1.North China Electric Power University

doi:10.19666/j.rlfd.2007.04.011

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CALCULATION OF MINIMUM WALL TEMPERATURE AND INLET AIR TEMPERATURE OF REGENERATIVE AIR HEATER

更新时间：2025-09-28

- CALCULATION OF MINIMUM WALL TEMPERATURE AND INLET AIR TEMPERATURE OF REGENERATIVE AIR HEATER
- Thermal Power Generation Issue 4, Pages: 47-49(2007)
- 作者机构：
  
  1. 华北电力大学
  2. 华北电力科学研究院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2007.04.011
  CLC： TK223.34
- Published：2007
- 稿件说明：
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YAN Wei-ping1, HUANG Jing-li1, LI Jun1, et al. CALCULATION OF MINIMUM WALL TEMPERATURE AND INLET AIR TEMPERATURE OF REGENERATIVE AIR HEATER[J]. Thermal power generation, 2007, (4): 47-49.
DOI：

YAN Wei-ping1, HUANG Jing-li1, LI Jun1, et al. CALCULATION OF MINIMUM WALL TEMPERATURE AND INLET AIR TEMPERATURE OF REGENERATIVE AIR HEATER[J]. Thermal power generation, 2007, (4): 47-49. DOI： 10.19666/j.rlfd.2007.04.011.

摘要

从换热原理上推导了回转式空气预热器热段烟气出口受热面金属壁温计算式

分析了最低壁温计算中存在的问题并提出改进方法。对某燃煤电厂2台200 MW机组锅炉不同设计的回转式空气预热器的酸露点温度、热段最低壁温与冷风温度的合理选取进行了计算与比较

其结果对合理选取回转式空气预热器热段防腐的最低进口风温以及冷段、热段受热面所占比例的优化设计与运行具有参考价值。

Abstract

The calculation formula of the heating surface metal temperature for hot section of the regenerative air heater has been deduced from the heat transfer principle

the problems existing in calculation of minimum wall temperature being analysed

and methods for improvement being put forward.For differently designed regenerative air heaters of two 200 MW boilers in one coal-fired power plant

the acid dew point temperature

the minimum wall temperature of hot section

and the inlet air temperature have been calculated and compared.The proposed method and results can be used as reference for choosing the reasonable inlet air temperature and optimizing the designed proportion of cold and hot sections of the heating surface.

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