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这三种方法是通风管道设计的主要方法

发布人:http://www。sftfgd。com   发布时间:2017-11-10 19:00:14

1、压损平均法

1, pressure loss average method

这一方法是以单位长度风管具有相等的阻力为前提的。计算步骤是:将已知的总风压按干管长度平均分配给每一段管,再根据每一段管的风量和分配到的风压确定风管断面尺寸。在官网系统所用的风机风压已定时,采用等压损法是比较方便的。对于大的通风系统可利用压损平均法进行支管的压力平衡。

This method is based on the equal resistance of the unit length air duct. The calculation steps are: the total pressure known by dry tube length average assigned to each section of the tube, and then the section size is determined according to the pressure of each air duct pipe and air distribution to the. It is convenient to use the isobaric loss method when the wind pressure of the fan used in the official website system has been fixed. For large ventilation systems, the pressure loss averaging method can be used to balance the pressure of the branch pipe.

2、静压复得法

2, the static regain method

静压复得法利用风管分支处复得的静压来客服该管段的阻力,根据这一原则确定风管的段面尺寸。此法一般适用于高速空调系统的计算。

QQ截图20170428145417.png

Static pressure regain method using duct branch return to service the pipe resistance, according to the principle of determining wind pipe section size. This method is generally applicable to the calculation of high speed air conditioning systems.

3、假定流速法

3. Assumed velocity method

该方法的特点是,先按技术经济要求来选定风管的流速,仔根据风管的风量确定风管的断面尺寸和阻力,然后对各支路的压力损失进行调整,使其平衡。这是目前常用的计算方法。

The feature of this method is that, according to the technical and economic requirements to the selected wind velocity, wind resistance and determine the section size of Aberdeen tube according to the air duct, and the pressure loss of each branch of the adjustment, the balance. This is the most commonly used method of calculation.

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