| 连续螺旋折流板换热器动态特性的数值预测和分析 |
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| 引用本文： | 吴峰,曾敏,吴一宁,王秋旺. 连续螺旋折流板换热器动态特性的数值预测和分析[J]. 动力工程, 2007, 27(4): 573-578 |
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| 作者姓名： | 吴峰 曾敏 吴一宁 王秋旺 |
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| 作者单位： | 西安交通大学,动力工程多相流国家重点实验室,西安,710049 |
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| 基金项目： | 教育部跨世纪优秀人才培养计划 |
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| 摘 要： | 应用有限差分法对以水、油为换热工质的连续螺旋折流板换热器的动态特性进行了数值预测,提出了适用于单壳程多管程换热器的顺流、逆流串联的概念,并通过试验数据进行了校核,证明了计算模型的合理性.同时研究了壳侧流体纵向扩散效应、换热器管壁轴向导热性能及其热容等参数对换热器动态特性的影响规律,为壳管式换热器动态特性的相关研究提供了依据.
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| 关 键 词： | 工程热物理 连续螺旋折流板换热器 流量扰动 动态特性 数值预测 差分格式 |
| 文章编号： | 1000-6761（2007）04-573-06 |
| 修稿时间： | 2006-12-25 |
Numerical Prediction and Analysis of the Dynamic Behavior of Heat Exchangers with Continuous Helical Shaped Baffles |
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| WU Feng,ZENG Min,WU Yi-ning,WANG Qiu-wang. Numerical Prediction and Analysis of the Dynamic Behavior of Heat Exchangers with Continuous Helical Shaped Baffles[J]. Power Engineering, 2007, 27(4): 573-578 |
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| Authors: | WU Feng ZENG Min WU Yi-ning WANG Qiu-wang |
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| Abstract: | The dynamic behavior of heat exchangers,with continuous helical baffles,using water and oil as the heat exchanging medium,is being numerically predicted by applying the finite difference(FDM) analyzing method.A concept of parallel-flow and counter-flow in series connection,applicable for heat exchangers with single shell side pass and multi tube side passes,are presented,and check-validated by experimental data,which prove the mathematical model's resonableness.The influence of axial heat conduction,of the heat exchanger tube walls,as well as their thermal capacity,on the heat exchanger's dynamic behavior are being explored,which may serve as a reference for studies concerning dynamic behavior of shell type heat exchangers. |
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| Keywords: | engineering thermophysics heat exchanger with continuous helical baffle plates flow disturbance dynamic behavior numerical prediction finite difference method |
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