| 600MWe超临界循环流化床锅炉的炉膛水冷壁传热 |
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| 引用本文： | 李燕,李文凯,吴玉新,杨海瑞,聂立,霍锁善.600MWe超临界循环流化床锅炉的炉膛水冷壁传热[J].清华大学学报(自然科学版),2009(2). |
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| 作者姓名： | 李燕 李文凯 吴玉新 杨海瑞 聂立 霍锁善 |
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| 作者单位： | 清华大学热能工程系热科学与动力工程教育部重点实验室;东方锅炉（集团）股份有限公司; |
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| 基金项目： | 国家“十一五”科技支撑计划资助项目(2006BAA03B02) |
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| 摘 要： | 对带隔墙的600MWe超临界循环流化床锅炉的炉膛水冷壁传热及热流密度分布进行了研究。基于构建的循环流化床锅炉传热模型,得到了锅炉最大连续工况、75%及50%汽轮机热耗验收工况下炉膛局部物料浓度、热流密度及传热系数的分布情况。结果表明,炉膛局部物料浓度、热流密度及传热系数沿高度的增加均逐渐降低,并在一定高度上逐渐均匀,随着负荷的降低,趋于均匀的高度有所下降。侧墙与隔墙局部物料浓度等参数沿周向的分布呈现角部高、中心低的分布趋势。由于隔墙的存在,前墙与侧墙的热流密度分布不同。整体上,炉膛出口处热流密度偏差最大;随负荷降低,传热系数周向偏差减小。
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| 关 键 词： | 超临界循环流化床 热流密度 |
Heat transfer in a 600 MWe supercritical circulating fluidized bed boiler with water cooled wall panels |
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| LI Yan,LI Wenkai,WU Yuxin,YANG Hairui,NIE Li,HUO Suoshan.Heat transfer in a 600 MWe supercritical circulating fluidized bed boiler with water cooled wall panels[J].Journal of Tsinghua University(Science and Technology),2009(2). |
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| Authors: | LI Yan LI Wenkai WU Yuxin YANG Hairui NIE Li HUO Suoshan |
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| Institution: | 1.Key Laboratory for Thermal Science and Power Engineering of Ministry of Education;Department of Thermal Engineering;Tsinghua University;Beijing 100084;China;2.Dongfang Boiler Group Co.Ltd.;Zigong 643001;China |
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| Abstract: | The water wall heat transfer and heat flux distribution in a 600 MWe supercritical circulating fluidized bed furnace were investigated.The solid suspension density,the heat flux,and the heat transfer coefficient distribution in the furnace were predicted at the maximum boiler continuous rating and at 75% and 50% of the turbine heat acceptance.The results show that the heat flux,the heat transfer coefficient,and suspension density all decrease with increasing distance to the distributor up to a critical heig... |
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| Keywords: | supercritical circulating fluidized bed heat flux |
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