Location: FILTECH's Flying Lab
Time: 10:15 am, February 19, 2014
Tool: Air purifier test system room, 3 meters high, total volume 28.5m3; one laser dust particle counter; one imported brand air purifier worth 11,000 yuan
Purpose: After opening the air purifier, the effective purification area and purification time of an air purifier are discussed by recording the numerical changes of the particulate matter in the air of the confined space.
The smog has become more and more familiar to the people, and the air purifier has gradually become the standard for every family.
But, do you really understand the air purifier? How large is the air purifier for the room? How can the air purifier be used to achieve the air purification effect?
experiment procedure
Purify the pollution caused by a cigarette
Professional purifier took 20 minutes
First, the staff lit a cigarette in the room as a simulated source of pollution. After 2 minutes, the cigarettes burned out and the staff opened the fan at the top of the test system to “stir†the airborne contaminants evenly.
After 3 minutes, the laser dust particle counter measured the air quality of the room after contamination. The instrument showed that the amount of particulate matter of various diameters in the air was: PM0.3 was 486302, PM0.5 was 454967, PM1.0 was 121191, PM2. .0 is 11144, PM5.0 is 700, and PM10 is 0, which is much higher than the relative amount of particulate matter in normal air.
Then, open the air purifier that has been placed in the middle of the room. The laser dust particle counter starts to issue the measured particulate matter data every minute.
At 10:40 in the morning, the data printed by the laser dust particle counter is: PM0.3 is 245710, PM0.5 is 182741, PM1.0 is 15863, PM2.0 is 1327, PM5.0 is 68, and PM10 is 0. Basic Close to the daily air index outside the system, the purification of pollutants is basically completed, and the total time is about 20 minutes. Finally, the calculator calculates the amount of particulate matter measured in 20 minutes according to the formula, and speculates on the working effect of the air purifier.
Experimental results
100m2 house
Need 5 household purifiers
According to the formula, the purification efficiency of the air purifier for PM0.3-10 is 225m3/h. Company technician Li Longwei told reporters that the purifier used in the experiment is medical grade, and the purification effect is much better than the air purifier on the market. What is the concept of 225m3/h? It is equivalent to an effective purification area of ​​40m2, compared to 20m2 for a typical air purifier. “This experiment shows that this purifier is suitable for a 40m2 room. The larger the room size, the longer the air purifier will purify, and the worse it will be. So if a 100m2 house is to purify the air The effect is that three air purifiers are needed. If you use a household purifier on the market, you need 5 units, which is simply impossible,†said Shen Yabin, chairman of FILTECH. Therefore, Shen Yabin suggested that in order to achieve the desired results, an air purifier is best used only in one room.
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