Can the fresh air system replace the air purifier?

With the introduction and implementation of the new national standard for air purifiers, the air purification market has been greatly improved. The air purifier and the fresh air system have been repeatedly used for research and comparison as a weapon for indoor air environment protection. Which product can better purify the air and get the optimal environment in the room.

What is smog in the end, why is it suddenly rising linearly?

► Haze, is a large number of very fine dry dust particles floating evenly in the air, so that the horizontal visibility of less than 10 kilometers of air is generally turbid, also known as ash. The degree of fog and enthalpy is determined by the concentration of fine particulate matter PM2.5 and PM1.0 (referred to as fine particles having aerodynamic diameters less than 2.5 and 1.0 micrometers, respectively).

► PM2.5 mostly refers to secondary fine particles produced by a variety of chemical and physical processes for gaseous pollutants discharged into the atmosphere. These particles enter the body through the human respiratory system, and the lungs are directly affected. The reason why PM2.5 is harmful to the human body is because it can be sucked into the lungs. Moreover, small particles can even enter the blood and other organs directly. An average person breathes about 10,000 liters of air per day. Once the air contains pollutants, human health is bound to be harmed.

At present, both air purifiers and fresh air systems will filter air pollutants such as PM2.5 as the first propaganda point. The difference between the two and how the current state defines its regulations.

After the implementation of the new national standard for air purifiers, the market chaos is gradually improving. From the results of the spot check conducted by the AQSIQ for 2016, the pass rate is 75.4%, and 15 batches of products from 14 companies are unqualified. The qualified detection rate is as high as 24.6%. That is to say, nearly three of the 10 purifiers sold in the market cannot meet the requirements for daily indoor air purification.

Both the fresh air system and the air purifier can purify the indoor air. How do they choose between them? Who should choose the purifier and fresh air system?

The existence of the fresh air system is to complete the indoor ventilation and ventilation without opening the window. Filtering PM2.5 is only a bonus function, not the purpose of its original birth. Shopping malls, hotels, and office buildings are large public buildings that must be manually ventilated, so the fresh air system is standard. It’s just that the smog is getting worse now, so adding a filtering system to the new wind is nothing more. However, most of the fresh air systems now exaggerate the purification efficiency in propaganda, causing most consumers to impose the purifier's ability on the fresh air system. After all, the price of a fresh air system can often buy 5-6 high-end air purifiers. For example, in the inner and outer circulation of the car, the inner circulation is equivalent to the air purifier, and the outer circulation is equivalent to the fresh air system.

The difference between the fresh air system and the air purifier is the amount of ventilation. The national standard issued by the fresh air system in 2007 shows that 30m3/h per person per hour; fresh air, if a family of three people calculates it, it needs 90m3/h. At present, most of the fresh air system uses a filter screen for the initial filtration of outdoor air. However, like the purifier, it needs to be replaced regularly. The filter is also graded. The PM2.5 can be filtered for high efficiency. The HEPA material used is the white paper-like film in the air purifier. replace.

Therefore, the fresh air system can not completely replace the role of the purifier, and the purifier and the new wind can better provide a clean home in the haze.