| 不同封头对板翅式换热器流场及阻力的研究 |
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| 引用本文： | 周爱民,文键,厉彦忠,马岩松. 不同封头对板翅式换热器流场及阻力的研究[J]. 化工机械, 2006, 33(5): 268-271 |
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| 作者姓名： | 周爱民 文键 厉彦忠 马岩松 |
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| 作者单位： | 西安交通大学 陕西省西安市,710049;西安交通大学 陕西省西安市,710049;西安交通大学 陕西省西安市,710049;西安交通大学 陕西省西安市,710049 |
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| 基金项目： | 西安交通大学校科研和教改项目 |
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| 摘 要： | 研究了3种封头结构在不同Re下对板翅式换热器出口通道物流分配和阻力损失的影响。结果表明,基本型封头造成板翅式换热器内部物流分配极不均匀,而孔板型封头结构能有效地降低不均匀参数和最大流速比,改善物流分配效果;孔板型封头结构增加了换热器的阻力损失和摩擦系数;错排孔板型封头在改善换热器物流分配的同时,也较好地抑制了阻力损失的增加,故其结构最为合理。
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| 关 键 词： | 孔板型封头 物流分配 阻力损失 摩擦系数 |
| 文章编号： | 0254-6094（2006）05-0268-04 |
| 收稿时间： | 2005-10-19 |
| 修稿时间： | 2005-10-192006-01-01 |
A Study on the Flow Distribution and Resistance of Various Heads of the Plate-Fin Heat Exchangers |
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| ZHOU Aimin,WEN Jian,LI Yanzhong,MA Yansong. A Study on the Flow Distribution and Resistance of Various Heads of the Plate-Fin Heat Exchangers[J]. Chemical Engineering & Machinery, 2006, 33(5): 268-271 |
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| Authors: | ZHOU Aimin WEN Jian LI Yanzhong MA Yansong |
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| Abstract: | A study was made of the influences of three kinds of header configurations under different Re numbers on the flow distribution at outlet and resistance loss of the plate-fin heat exchangers. The result shows that the ordinary headers made a serious maldistribution in the flow distribution of plate-fin heat exchangers, the perforated plate headers could efficiently drop the maldistribution parameters and the ratio of the maximum velocity, improve the result of flow distribution, increase the resistance loss and friction coefficient of heat exchangers; the staggered perforated plate headers could improve the flow distribution of heat exchangers and inhibit the increase of resistance loss, their configurations were most reasonable. |
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| Keywords: | Perforated Plate Header Flow Distribution Resistance Loss Friction Coefficient |
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