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source:Industry news release time:2022-01-07 Hits: Popular:aromatherapy diffuser direct sales
People who are not familiar with the fresh air system often mistake this system for an exhaust fan. In fact, the principles of this system and the exhaust fan are quite different when they operate. I believe that many people have seen an exhaust fan. It uses a fan to rotate to generate a certain negative pressure when it is running, so the indoor air will move toward an elegant place, which achieves the function of exhausting indoor air. But this system is completely different from the exhaust fan when it is running, because the air output and the air in this system are sent through two different ducts, and the air sent in needs to be processed in advance before it can be sent. In the room, the air sent out needs to exchange the heat in it, and then the indoor air is sent to the outside of the room. This kind of operation cannot be achieved by ordinary exhaust fans.
There is a special heat exchange device in the fresh air system. The biggest feature of this device is that it can retain part of the air in the room. For example, in winter, the weather is relatively cold, and the hot air in the room is sent out. The heat must be retained when the air comes in. When the outside air comes in, this part of the heat can be transferred to the air entering the room, so as to ensure that the temperature in the room is kept within a relatively stable range. The overall heat exchange utilization rate of this set of equipment can reach 60%, and even some equipment with better technology will have a higher heat exchange rate. However, if an exhaust fan is used, there will be no heat exchange at all, that is, the hot air in the room is directly discharged, and the cold outside air is directly sent to the room, resulting in almost 100% heat loss. This kind of exhaust fan There will be no energy saving effect at all.
The central fresh air system not only has the function of this exchange, but this system also has other functions that the exhaust fan does not have. For example, if the outside air is not professionally treated when it is delivered to the room, the quality of the outside air may not be particularly good. If it is sent to the room, it will pollute the air inside the room. And this system can filter the outside air before sending it in, to filter out all the harmful particles of some macromolecules inside, and also remove the possible germs or other pollutants in the outside air before sending it out. Clean it up, only in this way can you ensure that the incoming air is fresh and clean. The traditional exhaust fan is completely unable to achieve these functions.
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