| 煤粉加压气化炉膜式螺旋管和蛇形管对流传热特性研究 |
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| 引用本文： | 赵振兴,杨震,刘宏,常勇强,曹子栋. 煤粉加压气化炉膜式螺旋管和蛇形管对流传热特性研究[J]. 西安交通大学学报, 2011, 45(1): 10-14 |
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| 作者姓名： | 赵振兴 杨震 刘宏 常勇强 曹子栋 |
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| 作者单位： | 1. 西安交通大学能源与动力工程学院,710049,西安
2. 西安交通大学能源与动力工程学院,710049,西安;上海锅炉厂有限公司,200245,上海 |
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| 摘 要： | 对煤粉加压气化炉对流段的不同换热结构进行了换热特性的实验研究,其中换热结构包括膜式螺旋管环形通道换热器和膜式蛇形管平行通道换热器,实验气体为单质气体N2、He及其混合气,实验压力为0.5～3.5MPa.为此,针对不同冲刷形式、不同气体和压力提出了换热器换热系数及其扩展的计算方法,同时给出了典型冲刷形式的对流换热的关联式和适用条件.实验研究表明:冲刷形式对换热系数有很大影响,单通道和多通道换热系数与换热面积之间呈加权平均的关系;在相同换热条件下,膜式螺旋管环形通道换热器的换热系数高于膜式蛇形管平行通道换热器.
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| 关 键 词： | 高压气体 膜式螺旋管 膜式蛇形管 对流换热 |
Heat Transfer Characteristics of Different Heat Transfer Structures in Gasification Convective Syngas Cooler |
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| ZHAO Zhenxing,YANG Zhen,LIU Hong,CHANG Yongqiang,CAO Zidong. Heat Transfer Characteristics of Different Heat Transfer Structures in Gasification Convective Syngas Cooler[J]. Journal of Xi'an Jiaotong University, 2011, 45(1): 10-14 |
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| Authors: | ZHAO Zhenxing YANG Zhen LIU Hong CHANG Yongqiang CAO Zidong |
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| Affiliation: | 1 (1.School of Energy and Power Engineering,Xi′an Jiaotong University,Xi′an 710049,China;2.Shanghai Boiler Works Ltd.,Shanghai 200245,China) |
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| Abstract: | An experiment was conducted to study the heat transfer characteristics for a convection cooling section with the different heat transfer structures at high temperature and pressure in a coal pressurized gasifier.The heat transfer structures included an annular channel heat exchanger with membrane spiral tubes and a parallel channel heat exchanger with membrane serpentine tubes.In this study,the high pressure single gas(He or N 2) and mixture gas(He+N 2) were used to replace the high pressure syngas,and the ... |
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| Keywords: | high pressure gas membrane spiral tube membrane serpentine tube convective heat transfer |
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