| 回转式空气预热器最低壁温与进口风温计算 |
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| 引用本文： | 阎维平,黄景立,李钧,高宝桐.回转式空气预热器最低壁温与进口风温计算[J].热力发电,2007,36(4):47-49,28. |
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| 作者姓名： | 阎维平 黄景立 李钧 高宝桐 |
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| 作者单位： | 1. 华北电力大学,河北,保定,071003
2. 华北电力科学研究院,北京,100045 |
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| 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。
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| 关 键 词： | 燃煤电站 锅炉 回转式空气预热器 低温腐蚀 进风温度 |
| 文章编号： | 1002-3364（2007）04-0047-03 |
| 修稿时间： | 2006-09-05 |
CALCULATION OF MINIMUM WALL TEMPERATURE AND INLET AIR TEMPERATURE OF REGENERATIVE AIR HEATER |
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| YAN Wei-ping,HUANG Jing-li,LI Jun,GAO Bao-tong.CALCULATION OF MINIMUM WALL TEMPERATURE AND INLET AIR TEMPERATURE OF REGENERATIVE AIR HEATER[J].Thermal Power Generation,2007,36(4):47-49,28. |
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| Authors: | YAN Wei-ping HUANG Jing-li LI Jun GAO Bao-tong |
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| Affiliation: | 1. North China Electric Power University, Baoding 071003, Hebei Province, PRC; 2. North China Electric Power Research Institute, Beijing 100045, PRC |
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| 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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| Keywords: | coal-fired power plant boiler regenerative air heater low temperature corossion inlet air temperature |
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