Air conditioning and ventilation / | How to choose the supply and exhaust fan |
Knowledgeable people act differently. Even if the ventilation system is not drawn, it will not break. Why, because the situation can be easily corrected using inexpensive supply and exhaust fans , can greatly increase the efficiency of the existing system. The fact is, in most residential and office buildings provided with natural ventilation air stream. If it is not cleaned, the garbage accumulated in the duct begins to interfere with normal circulation flows and the system stops working. If the air is to drive with a fan, it is enough to even stay in the duct lumen.
In order to understand how cluttered the ventilation system of your home and what fans want, is enough to bring a candle to the vent in the kitchen, in a closet or bathroom. If the flame is deflected in the direction of the lattice, then, thrust is and can do simple fan. If the candle does not react to the proximity of the ventilation grille required " centrifugal " fan, a higher pressure. The cost of such a device are 2-3 times higher, but if the duct thoroughly clogged with junk, standard " axial " fan just does not help. Every apartment has at least three places where the presence of the fan will not be superfluous. It - toilet, bathroom and kitchen.
FANS FOR TOILET
If ventilation is not quite dead in the toilet is quite simple exhaust fan. He picked at the rate of 30 cubic meters. m/h at one " footprint " and fixed right there, where now flaunts air grille. And in order that the fan is not humming constantly, and switched on only in the case, it is connected to a light switch. Some fans are switched by a lace, but still better, if the device is equipped with a timer. Then he will start to work in a couple of minutes after you leave home place. After working for the prescribed period (5-15 minutes is usually enough), the fan will turn off and will wait patiently for the next time.
The price of the standard fan for the toilet is in the range of $ 20-40 for the device with a cord will have to pay $ 5-10 more, and finally, the availability of the timer increases the price by $ 15-25. And if the toilet has a common duct to the bathroom or kitchen, it does not hurt the non-return valve ($ 10), which prevents odors get from room to room.
FANS BATHROOM
The bathroom is best to install a fan in the splash-proof - and short circuit happens, the water will not get into the duct. It should be a pleasure $ 35-50, but if you do not mind another $ 30-35, set in the bathroom fan with humidity controller. As soon as it exceeds a certain value, the fan removes the moisture-laden air. And breathe easier, and the mirror does not mist over, and even underwear in a bathroom dries much faster.
FANS FOR KITCHEN
In the kitchen, the need in the air above, and therefore require a more powerful fan than in the bathroom or toilet. Its performance can pick up by multiplying the cubic content of the kitchen by 10 and subtracting the volume occupied by furniture. That is for the 6-meter kitchen need a fan, an outstanding 120-180 cubic meters per hour, and to 10 meters - 220-300 cubic meters per hour. Moreover, unlike the bathroom and toilet in the kitchen can be arranged not only the hood, but the influx, which uses fans are inserted directly into the window.
Standard window fan worth $ 50-55, but the presence of additional facilities lace, humidity controller, presence sensor, the timer may increase the price to $ 150-200.
FANS FOR RESIDENTIAL
Sometimes vented and living rooms, the only difference from the kitchen in the selection of the fan multiplied by the amount of space in 10, and 3. Sometimes arrive and in another way, buying the unit at the rate of 30 cubic meters. m hour for every living soul. Find similar technique today is not a problem - it is sold to specialized firms, building exhibitions, and even in the stores. However, if you are fenced off from the street by modern double-glazed windows and locked themselves in the bulletproof door, the usual exhaust fan is necessary. As the air in your home is almost does not penetrate, it is necessary to create a more sophisticated ventilation system, such as those used to supply air in office buildings.
FANS in a modern apartment
Currently, the most widely used version with modular ventilation systems, built on the principle designer. In addition to a variety of fans it includes silencers (to the room was quiet) and heaters (not to submit to the winter cold air). But other than that you need to clear the air with the help of special filters and uniformly disperse into the room through grilles. On top of that there are plenty of accessories of all kinds: inverse and fire dampers, air vents and so on.. All these components are collected in a single system with flexible or rigid ductwork and placed behind a false ceiling. This option is good in that the ventilation system does not take place in the room. Moreover, various nodes can be removed from each other at a good distance. And since all the elements of modular ventilation systems are standardized, you can easily combine products from different manufacturers.
The cost of the finished system, depending on the number and the area ventilated rooms can range from $ 600-700, to tens of thousands. Pleasure is not cheap, but for the whole year no problem with fresh air.
There is another option - to buy ready-made air handling units. It's a little more expensive, but more practical. The device is designed for apartments, usually has no more than the size of a suitcase, so it can fit in the attic or built-in cabinet. Sometimes it organizes the local lowering of suspended ceilings, for example in the hallway or closet. Then in the other rooms ceiling will eat at least useful volume - if only air duct passed. You may want to do without suspended ceilings, hidden in the duct running along the walls of decorative boxes. Small, designed for a single room can cost $ 700-1500, and the installation, giving the oxygen of an entire apartment or office, will pull on $ 6000-10000 and more.