Ventilation provides inflow of the fresh air to rooms and also conclusion fulfilled damp, with carbon dioxide, with foreign smells of air from rooms. Ventilation provides conditions, necessary for normal human life, in respect of clean air for comfortable stay in the room. Modern ventilation systems are capable to clean, warm up cold and to cool hot air, to humidify and drain, ionize, filter.
Principles of work of ventilation
As key indicator of work of ventilation in the house accept ventilation rate in hour or how many cubic meters of air will be updated during this time. For different rooms different norms of exchange depending on intensity of use, assignment, availability of the equipment, for example, of kitchen stove or the geyser are established.
So, Construction Norms and Regulations, building regulations, establish norm for kitchen of 60-90 CBM/hour, for the bedroom of 30 CBM/hour on one person. Why there is a lot of? In dream of people emits a lot of steam at breath. It accumulates in the bedroom and in cold season settles condensate on walls and linen. Therefore windows sweat, there are crude walls and bed. To remove excess moisture, continuous air exchange is necessary.
Important point of ventilation in the house - as air flows move. Inflow of fresh air has to be in bedrooms, the living room, office. Further air has to move to zones of bigger humidity and smells: kitchen, bathroom, toilet. At the same time it should not be formed drafts. In modern country houses equip supply and exhaust ventilation for each room.
The device, or what types of ventilation exist
Vent systems are separated by the principle of movement of air masses into natural and compulsory. Natural ventilation acts on the principle of height difference in the building, temperature drop of external air and indoors. Natural air exchange is possible at untight or open windows and doors, air vents in kitchen and the bathroom. But such way of ventilation is unreliable. It cheap in respect of the organization, but costly regarding energy saving of the house. To destination vent systems divide into the incoming, exhaust or forced-air and exhaust. The incoming has the device for preparation of air before giving to rooms and the system of its giving. There is excess and exhaust air through air vents, windows and doors naturally. In the exhaust ventilation on the contrary, at the exit forcibly the fan removes the polluted air, and inflow takes place it naturally. The best option the supply and exhaust ventilation device where the prepared air moves, and fulfilled gets out of rooms taking into account its correct movement on all rooms of the house. In multifamily houses often apply all-exchange ventilation, and in especially polluted work areas – local. The most progressive ventilation system is considered recovery. It is supply and exhaust ventilation where the fulfilled heated air heats air the incoming, cold or on the contrary. This way of ventilation has all advantages of forced-air and exhaust system, but allows to lower considerably costs of preparation of the clean entering air and its heating / cooling. On design of the ventilation system are subdivided into channel and beskanalny. In the first case are laid ventilating box or trays. In the second – air flows move directly on the ventilated rooms.