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Some improving measures for the spiral angle of spiral plate heat exchanger were presented.

针对螺旋折流板换热器的折流板的角度提出了一些改进措施。

Finally, the results of experiment demonstrate the availability and correctness of the advanced commutation strategy of matrix converter.

最后通过实验方法验证了改进后的矩阵变换器换流策略的可靠性与正确性。

In this papaer, principle of SVM control and four-stepped commutation is described.

文中介绍了矩阵变换器的控制和换流原理,详细介绍了系统各部分的实现。

The purpose of the cold experiment study is that study the fluidization characteristics of fine particles.

冷态实验的目的是研究外置式换热器内的细颗粒流化特性,并且为热态实验所需风量、风压等提供可借鉴的控制参数。

This paper concentrates on the modeling of component fractionation in heat exchangers.

本文模拟了工质在换热器中的分馏滞流。

The researches for investigating the influence of the inlet structure of the heat exchanger for two-phase flow on vapor-liquid maldistribution are reviewed.

介绍了低温两相流板翅式双相变换热器的结构和特点,回顾了板翅式换热器两相流体入口分配结构对其气液分配特性的影响。

A software based on this model has developed and been used in the design of 5 vapor heaters in the large granulated urea project.

提出了以风侧流阻最小为目标函数,传热负荷与迎风面尺寸为约束条件的双金属翅片管换热器优化设计模型,并开发出了相应的设计软件,成功地进行了在尿素大颗粒工程中五台蒸汽加热器的优化设计。

The gap between the baffle plate s and shell was blocked by the sealer,which effectively decreased the short circuit flow in the shell.

密封器堵住了折流板与壳体之间的间隙,有效地消除了换热器壳体内部的流体短路现象。

The law of heat transfer and pressure drop of two-phase of kerosene-air mixture at heating, boiling and condensation is obtained, the investigation result provides important basis for design of heat exchanger and heating furnace in hydrogenation technology of oil refining industry.

通过本文的研究,得到了煤油在含有不同量的空气时的煤油空气混合物两相流在加热、沸腾和冷凝时的换热和压降规律,建立了计算关联式,为炼油工业加氢工艺中的各种换热器和加热炉的设计提供了重要依据。

Flow characteristics of flow field in the header of platefin heat exchanger were investigated by means of particle image velocimetry and a series of velocity vector and streamline graphs of different crosssections before and after the header improvement were achieved.

利用Particle Image Velocimetry粒子图像测速仪对板翅式换热器入口结构改进前后的流场进行了实验测试,获得了入口结构内部不同剖面处的流场速度矢量和流线分布图。

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