| 考虑流体弥散的板翅式换热器动态特性解析解 |
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| 引用本文： | 关欣,李美玲,罗行.考虑流体弥散的板翅式换热器动态特性解析解[J].应用基础与工程科学学报,2003,11(2):185-189. |
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| 作者姓名： | 关欣 李美玲 罗行 |
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| 作者单位： | 1. 上海理工大学热工程和空调研究所,上海,200093
2. 汉堡国防军大学热工程所,德国,汉堡 |
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| 基金项目： | ThepresentresearchworkbelongstotheprojectOptimaldesign,lexibilityanalysisanddynamicsimulationofmultistreamheatexchangernetworks(No.RO294/9)supportedfinanciallybytheDeutschForschungsgemeinschaft(DFG)andtheproject”Fieldsynergeticsandcontrolofheattransfer processeswithmultiplestreams” (No .G2 0 0 0 0 2 63 0 1 )supportedbytheNationalDevelopmentProgramofChinaforKeyFundamentalResearches. |
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| 摘 要： | 提出了一种数学模型预测板翅式换热器的动态特性，模型考虑了翅片的动态特性，流体的轴向弥散。用拉氏变换和数值逆变换求解了流体、隔板、翅片的能量方程，并分析了流体的轴向弥散对换热器动态特性的影响。
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| 关 键 词： | 板翅式换热器 动态特性 解析解 流体弥散 拉氏变换 数值逆变换 能量方程 |
Analytical Solution of Plate-fin Heat Exchangers Considering the Dispersion of Fluids |
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| Abstract.Analytical Solution of Plate-fin Heat Exchangers Considering the Dispersion of Fluids[J].Journal of Basic Science and Engineering,2003,11(2):185-189. |
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| Authors: | Abstract |
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| Abstract: | A mathematical model considering the dynamic characteristics of fins is used to predict the transient temperature responses of plate-fin heat exchangers. The effects of the flow maldistributions are taken into account by adding the axial dispersion terms into the governing equation system. The effect of the dispersion in fluids is then investigated by solving the temperature dynamics in the fluid, separating plates and fins simultaneously and analytical solution is obtained in real time domain by means of Laplace transform and numerical inverse transform algorithms. |
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| Keywords: | analysis solution dispersion plate-fin heat exchangers |
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