Forced ventilation do-it-yourself: device features and

High-quality air exchange is a prerequisite for a comfortable stay in the room, so the ventilation system is performed at the stage of building a house. But what if it works inefficiently, for example, in the process of its design, mistakes were made or air ducts failed?

General information

The principle of operation of ventilation of the supply type is quite simple - the air flow into the room is forcibly carried out with the help of a fan. The exhaust in this case is carried out in a natural way by increasing the pressure in the room.

However, despite such simplicity, the device of forced ventilation can be quite complex, especially if it is planned as the main one. In this case, the system should provide effective air exchange, affecting all air masses in the premises of a house or apartment.

But, if the system is executed correctly, it has a number of advantages:

• Provides a constant flow of fresh air into the room.
• All structural elements are made of environmentally friendly materials.
• Forced air supplied to the room is filtered.

The complexity of installation and the cost of equipment depends on the volume of the room that needs to be ventilated.

The fact is that fresh air can be supplied in two ways:

• With the help of air inlet points located in each room separately.
• With the help of air ducts combined into a single structure.

If it is necessary to increase the air exchange in one room or to improve the efficiency of the existing ventilation, then a point scheme can be used. Such ventilation is easy to do yourself.

If the supply type system is planned as the main one, for example, when building a house, then it is much more difficult to implement. Moreover, the main difficulty that a home master may encounter is the calculation of fresh air ventilation of the room and the development of a wiring plan for the air ducts. Therefore, this work is better to entrust experts.

Tip! The most effective system is forced-air ventilation, when not only the air flow is forced, but also the exhaust air. In this case, the incoming air can be heated using a heat exchanger, which will provide savings in heating the room.

Fresh air ventilation device

System elements

If you nevertheless decided to perform the design of inlet ventilation yourself, you should first understand what elements it consists of. Thus, a system capable of providing air exchange in all areas of a house or apartment, usually consists of the following nodes:

Inlet chambers

The ventilation system does not need to be assembled from individual elements, since it is possible to use a special inflow chamber.

These devices are the main network elements united in one package:

• Fan;
• Heater;
• Air filter;
• Automation node.

Such a unit need only be connected with the help of air ducts to the inlet and outlet of the ventilation ductwork. In this way the easiest way to ensure the flow of air with the given parameters in the room.

Among the main advantages of this design are the following points:

• The device has a compact size.
• Installation of ventilation does not take much time and effort.
• Many operating modes of the system, including the presence of heated air.
• Control over the basic parameters is carried out using sensors.

The disadvantages of such a device is only a fairly high price.

Features of the design and calculation of the system

As already mentioned above, the installation of the inlet ventilation itself is not difficult, however, special attention should be paid to the calculation and design of the system. Moreover, the project can be carried out both for a house under construction and already built.

In any case, the scheme is developed depending on the following technical features of the structure:

• Its total area;
• Appointments of each room;
• Estimated parameters of the required air exchange, etc.

Note! When designing a new house, the scheme of fresh air ventilation must be included in the general project of building communications with the designation of the locations of ventilation equipment and air ducts.

The calculation of ventilation is reduced to determining the basic parameters of the system as a whole, as well as the necessary characteristics of its individual elements, which are responsible for the performance of the system.

These parameters include:

• Overall system performance;
• Fan power;
• Permissible noise level in the network and air flow rate;
• Section of air ducts and material of which they are made;
• Power and type of heater.

All calculations for ventilation must be performed according to SNiP 2.04.05-91.

Installation of ventilation type

Most often, the need for an independent installation of the system arises in apartments and houses, when general ventilation is not enough for effective air exchange. As a rule, this happens after the installation of plastic windows.

The lack of air exchange can be identified by the following features:

• Regular misting of windows occurs;
• Indoor odors persist;
• There is mold on the walls, etc.

Of course, all these signs may appear if the overall ventilation system is out of order. Therefore, first you need to check whether there is a thrust in the air ducts. If there is a traction, the problem can be solved by installing additional equipment.

Installation of the supply fan

The easiest way to arrange ventilation, as already mentioned above, is to install outside air inlet points in the room. Most often for these purposes use special fans that are installed in the wall.

This option is great if you need to improve the air exchange, for example, in the kitchen or another room. Such a fan can be as simple, i.e. switched on and off manually and automatically, equipped with sensors for monitoring humidity, temperature, etc.

The installation instructions for the device are as follows:

• First you need to decide on the location of the device. As a rule, the fan is installed in the gap between the batteries.
• Then a hole of the required diameter is drilled in the wall.
• Next, the device tube is inserted into the hole. Its length should correspond to the thickness of the bearing wall.
• The space between the pipe and the wall must be filled up.
• After that, a protective grille is installed outside, which is included in the device kit.
• The final stage is the installation of the interior. The work must be performed strictly according to the instructions from the manufacturer.

Such a system can significantly improve the air exchange in a separate room, however, if you need to increase the flow of air in other rooms, then one fan will be small.

Installation of air handling unit

To ensure the flow of air into several rooms, a special solution is a special ventilation unit. The principle of its operation is similar to the above device, however, the power is much higher.

In addition, the installation has some other advantages:

• Provides high-quality air cleaning.
• Maintains a certain temperature in the room by heating the air flow.
• Mode control is a remote control.

Such a system of inlet ventilation with their own hands is mounted on the same principle as the intake fan - a pipe-air duct is installed in the wall, to which the installation itself is connected. As a rule, the device is fixed to the wall.

As for more complex systems, it is better to entrust their installation to specialists, so minor errors can lead to system inefficiency and waste of funds.

Conclusion

Supply ventilation is a great way to increase the efficiency of an existing air exchange system. Moreover, to implement the most simple, but at the same time, quite effective schemes are not at all difficult without the help of specialists.

From the video in this article, you can learn some additional information on this topic.