Fresh air system advantage
1) You can enjoy the fresh air of nature without opening windows;
2) Avoid "air conditioning disease";
3) Avoid mildew of indoor furniture and clothes;
4) Remove the harmful gas released for a long time after interior decoration, which is beneficial to human health;
5) Recover indoor temperature and humidity, save heating cost;
6) Effectively eliminate all kinds of bacteria and viruses in the room;
7) Super mute;
8) Reduce indoor carbon dioxide concentration;
open windows to improve air circulation
Exhaust fan ventilation
The ventilator can not continuously remove the indoor peculiar smell and meet the replacement demand of indoor fresh air; it is easy to be damaged and the maintenance cost increases in the later stage; it can not continuously ventilate and exchange air; it is noisy; when there is no fresh air introduction, the exhaust resistance increases and the effect is not good. Even without the above disadvantages, considering the small air volume and limited scope of action of the exhaust fan, it is impossible to install the exhaust fan in every room, even if it is installed, the effect will not be achieved. The exhaust fan can only realize local short-time exhaust, without reasonable pressure field and air flow path, so it can not achieve real air replacement. And the exhaust fan can't operate continuously for 24 hours, and the noise of the exhaust fan is very loud.
Air conditioner with partial fresh air: the air accepted by the wall mounted air conditioner comes from the air conditioner itself, and a closed circulation system is formed between the room and the air conditioner; some central air conditioners with slightly fresh air form a positive pressure area in the room, and it is difficult to continue to supply air; there is a large number of bacteria at the air outlet, especially in winter, the temperature of the air conditioner outlet is the hotbed of bacteria; it cannot be reached Indoor and outdoor air for the purpose of full exchange, and the price is higher than ordinary air conditioning.
A. Air purifier: it can only absorb dust and other particles in the air, and can not eliminate harmful molecules. Even after repeated treatment, the effect is still poor.
B. Air disinfectant and air freshener: after indoor spraying, they are mixed with the original dirty air, which is equivalent to painting "camouflage" on the interior, paralyzing people's nose, and a bit of "covering up the ears and stealing the bell", which can not only cure indoor air pollution, but also secondary pollution, making indoor air worse. Freon is also the destroyer of atmospheric ozone layer.
C. Air dialysis system: when the air dialysis system operates, the noise is low, the exhaust fan is used to exhaust the indoor dirty air, and the induced fan is used to introduce the outdoor air into the room through the air supply pipe. After high temperature sterilization, filter screen filtration and other technologies, the air is purified, and the purified air is delivered to each room