A new method for heat transfer and fluid flow performance simulation of plate heat exchangers

A new method for heat transfer and fluid flow performance simulation of plate heat exchangers
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板式换热器传热及流体流动性能模拟新方法

DOI:
10.1080/10407790.2019.1607117
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发表时间:
2019-02
影响因子:
1
通讯作者:
Tian Maocheng
Tian Maocheng
中科院分区:
工程技术4区
文献类型:
--
作者:
Bai Chao;Zhang Guanmin;Qiu Yan;Leng Xueli;Tian Maocheng

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板式换热器换热与流动性能的数值模拟至关重要。它们的复杂结构往往使数值计算变得相当困难和耗时。本工作所得出的结论有望大大简化模拟过程。对由不同周期数组成的不同类型的平板进行了分析,得出了在不同进口速度下,不同平板的不同周期的努塞尔数保持不变的结论。中心摩擦系数的变化规律与Nusselt数相同。对于第一个和最后一个周期,不同板块的摩擦系数也保持不变。对于任何尺寸的板的性能预测,具有四个周期的小板数就足够了。
Abstract Successful numerical simulation on heat transfer and fluid flow performances of plate heat exchangers is vital. Their complex structures often make the numerical calculation quite difficult and time-consuming. Conclusions drawn by the present work are promising for greatly simplifying the simulation. Different types of plates consisting of different numbers of periods are analyzed and it is concluded that the Nusselt number remains constant for different periods of different plates under different inlet velocities. The central friction coefficients behave the same as Nusselt number. For the first and last periods, the respective friction coefficient also remains for different plates. A small plate fraction with four periods is enough for performance prediction of any-sized plates.
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