All kitchens in apartment buildings are equipped with natural draft ventilation openings. When purchasing a cooker hood, the owners usually build it in natural ventilation of the kitchen. This is a serious mistake, which we will analyze further.
Natural ventilation of the kitchen
Natural ventilation of kitchens in apartment buildings is calculated on a specific pressure, air flow rate, etc. Ventilation ducts in old-built houses often poorly perform their function without additional loads. Under the most optimal temperature conditions, up to 180 cubic meters of air per hour are blown into the kitchen ventilation with a gas stove. A good exhaust hood can blow up to 1000 cubic meters of air per hour. Such capacities are designed for individual ventilation ducts of private houses or wide ventilation shafts, built, for example, in American skyscrapers.
Cooker hoods are not an analog of ventilation in the kitchen! Their purpose is the elimination of steam and soot directly from the stove. It is important to understand that if the hood has pumped out 1,000 cubic meters of air from the kitchen, another one must come in its place.
He will come from an open window, ventilation of the toilet or cracks under the door to the entrance.
At the same time, connecting the hood to the ventilation duct interferes with natural ventilation in the kitchen.
How to choose and connect a hood
When purchasing a hood, do not chase power.
Narrow ventilation ducts let through exactly as much air as they are designed for (see above). You can change the situation by connecting the hood to a specially made hole in the outer wall of the house. But with such ventilation in the kitchen with an exhaust hood, it is important to provide for the possibility of a damper for the cold season.
Exhaust ventilation in the kitchen has nothing to do with a hood mounted above a stove. Disturbing the natural movement of air, the hood draws in the kitchen smells from other people's apartments or other rooms.
Exhaust ventilation of the kitchen
Exhaust ventilation in the kitchen is mounted from a system of channels, to which an hood is attached if desired. Before installation, engineers calculate the system and equip competent ventilation in the kitchen with an extractor fan. It is especially important to properly equip the ventilation of kitchens with gas stoves.
Indeed, in addition to the vapors and smells of food, when natural gas burns out into the air, harmful impurities are released.
