Ways to control the breeze: how to make ventilation in the cellar?
Any food store should be well protected against dampness, cold and mustiness. In this regard, the cellar is carefully waterproofed, insulated and provided with proper ventilation. A constant fresh breeze will not allow excess moisture and harmful gases to linger in the back room, provide vegetables and fruits with proper "breathing" and protect them from premature decay.
The ideal scheme of cellar ventilation is based on fully automated regulation of the intensity of supply and exhaust air flows. Everyone is controlled by a "smart" device, sensitive to the slightest fluctuations in the microclimate in the room. But not everyone can afford to buy a device worth $ 1,5-2 thousand( climate control, module, candy bar). ..
We do not worry, , we explain how the ventilation of the cellar is arranged by oneself without buying expensive equipment. There are two options:
- natural cellar ventilation system;
- combined scheme with forced exhaust of exhaust air.
They are equally popular among the owners of underground storages, so we will describe how to make each of these types of ventilation for the cellar with their own hands.
Available and simple - natural ventilation in the cellar
Everyone knows the principles of natural ventilation in a private house. Out of one hole comes the exhaust air, and the other comes a fresh "portion" of the breeze. Similarly, the natural air exchange in the cellar is arranged:
- The exhaust pipe extends along the corner of the room to remove dirty air, and its lower open end is located above the floor at an altitude of 1.40-1.50 m. Further the channel passes to the roof itself and rises aboveher skate( by 40-50 cm).
- The fresh air supply pipe is mounted in the opposite corner of the cellar from the extractor. Its open end is installed above the floor at a height of 45-55 cm. The channel permeates the overlap and projects above the zero level of the floor to 80-100 cm.
Asbestos pipes are usually used for laying the channels, but their diameter is determined from the ratio:
per 1 m2 cellar= 26 cm2 of the duct section
For example, you have a basement of 8 m2.Hence, the cross-sectional area of the pipe should be 208 cm2.From the school course of mathematics we know that the area of the circle is S = πR2.As a result, we need pipes with a diameter of 16 cm( rounded value).
The scheme of natural ventilation works only if there is a temperature difference between the street and the indoor room. As soon as the sun croaks, your supplies will no longer "wash" the fresh airflow. This is a significant drawback of this system, because the downtime period in some cases exceeds 6 months! This problem can be solved by slightly improving the scheme.
Amplification of the circuit or how to correctly make the cellar ventilation?
Speech, of course, will be about the combined ventilation system of the cellar, which is an improved model of the previous scheme. The mode of its operation is year-round, because it does not depend on the temperature difference. The breeze arises from the pressure drop induced by the mechanical method. A fan is inserted into the exhaust pipe, which helps to quickly get rid of working in the room and creates favorable conditions for the natural filling of the "void" with fresh air.
If the ventilation in the garage is organized in this way( the cellar is under it), the systems can be connected by means of nozzles. Just remember that the angle of slope of the pipes should not be less than 45 °, otherwise the force of the natural vortex will be significantly weakened.
Combined ventilation of the cellar in the house is the best variant of the arrangement. The fan is inexpensive, consumes a small amount of electricity( up to 100 watts).Some folk craftsmen and do reduce costs to a minimum by connecting to the device a windmill to use not wind, but electric.
Ventilation of the cellar in winter works in a reinforced mode. Thrust is very strong, which can lead to excessive cooling of products. To avoid this, valves are provided with valves for adjusting the force of the air streams.
Use mesh and tapered roofs to protect the outer ends of the pipes. They should also be thoroughly insulated.
