Velocidad del aire, Sistemas de ventilación

Velocidad del aire, sistemas de ventilación, colectores de polvo

Velocidad del aire, Sistemas de ventilación

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Is it important to measure air speed?

Before carrying out a project to control dust, fumes, mists or gases in the company, you must collect as much information and data that will allow you to carry out the correct and necessary calculations, one of the most important is that of the Air Velocity or CFM.

What is air velocity?

The airspeed, is generally defined as the movement that occurs in a horizontal direction to the Earth, this is not a mass of gas at rest, on the contrary, it is a very thin veil with fluidity and completely variable, with various thermal contrasts, this massive displacement of large masses of volumes of air with defined speeds and direction is called wind. 

The airspeed, is one of the main data that we take into account for the design and manufacture of a dust collection system. Defining the capture speed will allow us to know the air flow, the diameter of the ducts, the collection area, the fan capacity, among other factors that will help maintain the speed of the air mass.

What is the air mass?

Esta es la consideración más importante para la aplicación en procesos de secado, combustión y ventilación general, las cuales necesitan cierta cantidad de masa de aire, estas se miden usualmente en lbm/𝑓𝑡 ³ o Kg m/m³.

What is CFM?

El caudal volumétrico, denominado de ahora en adelante “volumen“ (𝑣), se define como la cantidad de aire que pasa por un lugar determinado por unidad de tiempo. Está relacionado con la velocidad promedio y el área de la sección transversal del ducto dada por la ecuación:

𝑄=𝑉𝐴
where:

Q = volumetric flow rate, cfm

V = mean velocity, fpm

A = área de la sección transversal, (〖𝑓𝑡〗^2 )

Velocidad del aire, sistemas de ventilación, colectores de polvo

For instance; The capacity tables of industrial fan manufacturers are published in ACFM (Actual Cubic Feet Per Minute), the required air mass must be converted from SCFM (Standard Cubic Feet Per Minute) to ACFM (Actual Cubic Feet Per Minute). The transport speed in the system can be defined once we define the ACFM air volume.

The design of a dust collection system, fumes or ventilation system, part of the work of analyzing and calculating in real terms the volume or velocity of the air that must move and; thus being able to size and select the necessary components of the system to carry out the work, such as ducts, hoods, fan, etc.

Tips DYNA FLO®: 

  • Before investing in an industrial ventilation system, consult an expert in the field, give us a call.

Collector Types 

Velocidad del aire, sistemas de ventilación

Velocidad del aire

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