What is ventilation system, Classification of ventilation system

The air duct system ensures the circulation and circulation of air in a fixed space to provide a clean air source for the living environment in that space. So what is the ventilation system, How is this ventilation system classified

1. What is the ventilation system?

A ventilation system is a system that helps fresh air circulate in a confined space or space and removes contaminated air. It is used in various environments, including at home and at work. The system has many uses including maintaining humidity and temperature stability, removing dirt and allergens, supplying and exchanging O2 and CO2.

Artwork:  Ventilation system – Specializing in construction and installation of ventilation design

2. Purpose of ventilation

  • Discharging the toxic substances in the room to the outside. Toxic substances include many types. The most common hazardous living spaces are CO2.
  • Excess heat and excess moisture away.
  • Providing the amount of oxygen necessary for human activities.
  • In some special cases, the purpose of ventilation is to overcome incidents such as spreading harmful substances or fires.

3. Classification of ventilation systems

3.1 In the direction of the wind’s movement

It is divided into the following categories:

Ventilation type: Blows clean air into the room and the indoor air is discharged outside through the openings of the room thanks to the differential head. The ventilation method has the advantage of being able to supply air to the necessary places, where many people are gathered, or excessive heat, excess moisture, wind speed is often large. However, the disadvantage of this method is that the room pressure is positive, so the wind flows in all directions, so it can flood into unwanted areas.

Suction type ventilation: Exhaust the polluted air out of the room and outside air flows into the room through openings or fresh air inlet thanks to the difference in head. Ventilation type exhaust ventilation has the advantage of being able to directly absorb polluted air at the place of arising, not to spread out in the room, the ventilation flow therefore not too large, but highly effective. However, this method also has the disadvantage of a very low air circulation in the room, almost no significant circulation, on the other hand, the air entering the room is relatively free, so it is impossible to control the air quality. rooms, air from unwanted locations can enter.

Combined ventilation: Combining both exhaust and blowing into the room, this is an effective method. Ventilation combines suction and exhaust with a system of exhaust fans and blowers. Therefore, it is possible to actively absorb polluted air at the locations where the toxin is generated and supply it to the places that require the greatest fresh air. This method has all the advantages of the two methods mentioned above, but eliminates the disadvantages of those two types of wind supply. However, the combined method has the disadvantage of higher investment costs.

3.2 Following the dynamics of ventilation

Natural ventilation: The phenomenon of air exchange indoors and outdoors thanks to the difference of head. Usually the head is created by the difference in temperature between the outside and the inside, the wind currents create.

Forced ventilation: Ventilation is carried out by external force ie using a fan.

3.3 By organizational method

Overall ventilation: Overall ventilation for the entire room or building

Local ventilation: Ventilation for a small special area in a room or rooms containing large quantities of hazardous substances.

3.4 According to the purpose

Normal ventilation: The purpose of ventilation is to remove harmful substances, excess heat, excess moisture and provide oxygen for human activities.

Ventilation of incidents: Many buildings are equipped with ventilation systems to overcome problems.

Preventing chemical spills: When incidents occur, ventilation system operates and releases toxic gases to designated places or to outside.

In the event of a fire: In order to prevent the fire from penetrating the stairs and fire exits, the ventilation system works and creates positive pressure on these sections so that people can escape easily.

The fault ventilation system only works when the problem occurs

Through the above article, we hope to help you better understand the ventilation system and the important role that the ventilation system plays in the human environment. If you need further advice or assistance with the ventilation system, please contact IMS Vietnam Engineering Co., Ltd. we will support and advise you best!

With a staff of many years of experience in the field of processing and installing ventilation systems. We guarantee to bring customers the best service!

IMS Vietnam Engineering Co., Ltd. is a prestigious contractor, and a reliable partner of well-known brands in the field of air conditioning, ventilation systems ….

We are looking forward to serving customers with design consulting services, construction and installation of ventilation systems . All needs to install, design, construction ventilation system please contact us at the following information:



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