The lack of fresh air is felt more if plastic windows are installed in the room. The closing density of these windows does not allow fresh air to get into the room. The opening of windows for ventilation is not always possible to use, so we recommend that you install the supply and exhaust ventilation scheme. The use of built -in valves on plastic windows will not save, especially in winter, t. To. They pass cold air in winter.
The installation of supply and exhaust ventilation creates a small excess pressure in the room, a consequence of a larger air supply than the weathering of the old. This leads to an improvement in ventilation operations located in the kitchen and in the bathroom.
The supply ventilation often consists of a fan that pumps fresh air, sometimes filters, heating or cooling the air of the block and electronic automation. It is desirable that the temperature of the incoming air is not lower than 18 ° C. The electronic unit is able to adjust the air supply and track its temperature. Air heating ventilation is rapidly gaining popularity due to its qualitative characteristics.
Types of supply and exhaust ventilation
Individual ventilation systems are used for small areas, for example, one room. Such systems do not need to install a network of air ducts. Accordingly, the installation takes a little time. The main drawback of the system is the noise level. The installation is also placed inside the room, and with increased noise, this sometimes causes uncomfortable conditions. The functions of such an individual ventilation system are already performed by most air conditioners.
Channel ventilation systems are already powerful and full-fledged supply and exhaust ventilation systems. All system ducts are distributed throughout the house. Installation of such systems, as a rule, is done on the attic or on the ceiling itself, later closing the ducts with suspended ceilings. For apartments it is advisable to use installations with a minimum noise level.
When placing a ventilation system, it must be remembered that it must be periodically served. Therefore, the convenience of location is not the last factor when installing the system.
Calculation of ventilation
The calculation of supply and exhaust ventilation is very important before installation in any room regardless of purpose. The main objectives of the calculation are to achieve comfortable conditions.
The ventilation system must be placed so that the air is not aimed at people. An important parameter characterizing the ventilation system is the frequency of air substitution, t. e. the number of air changes in the room per unit time.