| 摘要: |
| 翅片管换热器变工况、变结构特性,是指其性能不仅受到工况参数的影响,而且也随结构参数的改变而变化的特性。因此,为深入研究此换热器特性,建立了相关的分析模型。当任一工况或结构参数在其最大可变范围内变化时,该模型可分析预测翅片管换热器相应的性能变化规律。利用实验数据对模型计算结果进行了对比验证:干工况下,模型计算所得的各性能参数值与实测值吻合良好,其平均相对误差均小于6%;湿工况下,计算值与实验值的平均相对误差也在20%内,且其变化趋势一致,从而证明了模型的正确性及有效性。分析模拟所得的变工况、变结构特性,不仅有利于优化产品的结构设计,可辅助换热器的选型,而且还为换热器运行调节方法的选取提供了依据。 |
| 关键词: 工程热物理 翅片管换热器 数字化设计 变工况 变结构 |
| DOI：10.3969/j.issn.0253-4339.年份（4位数字）.月份（2位数字）.文章的起始页码（3位数字） |
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| 基金项目: |
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| Model Analysis on the Performance of Fin-tube Heat Exchanger with Variable Condition/Structure |
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Wang Ting Gu Bo Han Hua
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| (Wang Ting Gu Bo Han Hua(Institution of Refrigeration and Cryogenics Engineering,Shanghai Jiao Tong University,Shanghai,200240,China)) |
| Abstract: |
| The performance of fin-tube heat exchanger is variable with not only condition parameters,but also structure parameters.So a performance analysis model was established to comprehensively analyze and to predict the performance of fin-tube heat exchanger with variable condition and variable structure.The calculated results of the model were verified by the experimental data: the mean relative deviations are lower than 6% under dry conditions or 20% under wet conditions,which show a good agreement both in nume... |
| Key words: Engineering thermophysics Fin-tube heat exchanger Digital design Variable condition Variable structure |
