| 高度方向烟温偏差对后屏过热器壁温影响的数值研究 |
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| 引用本文： | 陈谦,曾雪梅,初云涛.高度方向烟温偏差对后屏过热器壁温影响的数值研究[J].热力发电,2007,36(9):24-26. |
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| 作者姓名： | 陈谦 曾雪梅 初云涛 |
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| 作者单位： | 1. 中南电力设计院,湖北,武汉,430071
2. 华中科技大学,湖北,武汉,430072 |
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| 摘 要： | 应用可以反映沿高度方向受烟温偏差影响的过热器热流分布模型,在不同烟温偏差水平下计算过热器热流密度分布,从而计算出相应的过热器管壁温分布。结果表明:沿高度方向烟温偏差水平较小时,过热器管存在水平段和出口段两个高壁温区域;烟温偏差水平增大时,出口段壁温下降,水平段壁温显著升高。
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| 关 键 词： | 锅炉 过热器 烟温偏差 热流密度 壁温 数值模拟 |
| 文章编号： | 1002-3364（2007）09-0024-03 |
NUMERIC VALUE STUDY ON THE INFLUENCE OF FLUE GAS TEMPERATURE DEVIATION ALONG THE DIRECTION OF HEIGHT UPON THE WALL TEMPERATURE OF REAR PLATEN SUPERHEATER |
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| CHEN Qian,ZENG Xue-mei,CHU Yun-tao.NUMERIC VALUE STUDY ON THE INFLUENCE OF FLUE GAS TEMPERATURE DEVIATION ALONG THE DIRECTION OF HEIGHT UPON THE WALL TEMPERATURE OF REAR PLATEN SUPERHEATER[J].Thermal Power Generation,2007,36(9):24-26. |
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| Authors: | CHEN Qian ZENG Xue-mei CHU Yun-tao |
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| Affiliation: | 1. Mid - South China Electric Power Design Institute, Wuhan 430071, HubeiProvince, PRC 2. Mid- China University of Science and Technology, Wuhan 430072, Hubei Province, PRC |
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| Abstract: | Adopting heat flux distribution model of the superheater,which can reflect the influence of flue gas temperature deviation a- long the direction of height,the heat flux density distribution of superheater has been calculated under different level of flue gas tem- perature deviation,and then corresponding tube-wall temperature of the superheater being computed out.Results show that there are two high wall-temperature areas existing in horizontal section and outlet section of the superheater in the case of smaller flue gas temperature deviation along the direction of height;the wall-temperature in outlet section is decreased in the event of increasing the said deviation,but the wall-temperature in horizontal section being substantially increased. |
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| Keywords: | boiler superheater flue gas temperature deviation heat flux density wall-temperature |
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