| 通风管道的设计包括哪些方面？ |
| 添加时间：2024/1/9 15:59:36 浏览次数： |
| 通风管道的设计包括哪些方面？需要注意什么？下面，通通风管道道厂家来为您讲解： What aspects are included in the design of ventilation ducts? What should I pay attention to? Below, the manufacturer of ventilation ducts will explain to you: 我们的日常生活中，我们经常可以看到通通风管道道随处可见，但我们用它来做什么却不是很清楚。通通风管道看起来很简单。实际上，它的设计安装都有很多门道在里面。 In our daily lives, we often see ventilation ducts everywhere, but what we use them for is not very clear. Ventilation ducts look simple. In fact, its design and installation all have many doorways inside. 一般是在系统及风量已确定的基础上进行的，通过计算通风管道的段面尺寸和阻力，进而确定风机的型号和动力消耗。常用的系统设计计算方法是假定流速法，它的计算步骤和方法如下： It is generally carried out based on the determined system and air volume, by calculating the section size and resistance of the ventilation duct, and then determining the model and power consumption of the fan. The commonly used system design calculation method is the assumed flow rate method, and its calculation steps and methods are as follows: (1) 绘制通风系统轴侧图，对各管段进行编号，标注长度和风量。管段长度一般按两管件间中心线长度计算，不扣除管件(如三通、弯头)本身的长度。 (1) Draw a ventilation system axial diagram, number each pipe section, and label the length and air volume. The length of the pipe section is generally calculated based on the centerline length between two pipe fittings, without deducting the length of the pipe fittings (such as tees and elbows) themselves. (2) 选择通风管道内空气流速 (2) Select the air flow rate inside the ventilation duct 通风管道内的空气流速对通风系统的经济性有很大影响，需要通过技术经济比较选定适当的流速。 The air flow rate inside the ventilation duct has a significant impact on the economy of the ventilation system, and it is necessary to select an appropriate flow rate through technical and economic comparison. (3) 根据各通风管道的风量和选择的流速确定各管段的断面尺寸，计算摩擦阻力和局部阻力 (3) Determine the cross-sectional dimensions of each ventilation duct section based on the air volume and selected flow rate, and calculate the frictional resistance and local resistance |
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