| 滚筒式冷渣器一维传热模拟 |
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| 引用本文： | 庄宇,陈汉平,杨海平,王贤华,张世红.滚筒式冷渣器一维传热模拟[J].动力工程,2011,31(7). |
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| 作者姓名： | 庄宇 陈汉平 杨海平 王贤华 张世红 |
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| 作者单位： | 华中科技大学煤燃烧国家重点实验室,武汉,430074 |
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| 基金项目： | 国家“十一五”科技支撑计划子课题资助项目(2006BAA03B05-03,2006BAA03B02-09); 国家自然科学基金资助项目(51021065) |
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| 摘 要： | 建立了滚筒式冷渣器一维传热模型,对其传热特性进行了模拟和分析,并利用中试试验以及O型冷渣器现场运行数据对模型进行了验证.结果表明：模拟结果与试验数据具有很好的一致性;随粒径增加对流传热减弱,随转速增加和填充度的加大综合传热系数增大,肋板能有效提高冷渣器的传热效率;虽然综合传热系数随转速增加而增大,但因滚筒出力同时也加大,因而出口渣温随转速加大而升高;入口端灰渣降温较快,传热以辐射为主,随着渣温的降低,在出口端对流传热逐渐占据主导地位.
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| 关 键 词： | 滚筒式冷渣器 传热模型 传热效率 O型冷渣器 |
Simulation on One-dimensional Heat Transfer Characteristics in a Rotary Slag Cooler |
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| ZHUANG Yu,CHEN Han-ping,YANG Hai-ping,WANG Xian-hua,ZHANG Shi-hong.Simulation on One-dimensional Heat Transfer Characteristics in a Rotary Slag Cooler[J].Power Engineering,2011,31(7). |
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| Authors: | ZHUANG Yu CHEN Han-ping YANG Hai-ping WANG Xian-hua ZHANG Shi-hong |
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| Affiliation: | ZHUANG Yu,CHEN Han-ping,YANG Hai-ping,WANG Xian-hua,ZHANG Shi-hong(State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | A one-dimensional heat transfer model was set up for rotary slag cooler,with which heat transfer characteristics in the cooler were simulated and analyzed.The model was verified by both pilot test results and field operational data of an O-type slag cooler.Results show that the simulation data agree well with that of the experiment.The convective heat transfer coefficient reduces with rising particle size;the comprehensive heat transfer coefficient increases with rising rotation speed and slag flow rate;the... |
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| Keywords: | rotary slag cooler model of heat transfer heat transfer efficiency O-type slag cooler |
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