Buy the air purifier key to see the CADR value

Buy the air purifier key to see the CADR value

February 04, 2015 Source: Technology Daily

Song Guangsheng, director of the National Indoor Environment and Indoor Environmental Product Quality Supervision and Inspection Center, pointed out that the removal rate of pollutants has specific conditions. To evaluate the performance of the air purifier, mainly looking at the CADR value, the CADR value of the air purifier produced by many companies is not high, so only the pollutant removal rate is promoted.

"At present, there are two main types of purifiers on the market in China. One is based on passive adsorption such as activated carbon filtration, accounting for about 70%; the other is based on ionization adsorption." National Household Appliance Quality Supervision and Inspection Center According to the person, but regardless of the principle, the core indicators in the test need to involve the CARD value.

CADR is an abbreviation for (Clean Air Delivery Rate), which means the ratio of clean air output. In general, the larger the CARD value, the higher the purification efficiency of the purifier. “In the international arena, within one hour, indoor air must be guaranteed to reach 5 air exchanges.” According to professionals, air purifiers have two necessary hard indicators to ensure that indoor air quality meets certain cleanliness standards: To ensure that the indoor air reaches a certain number of air changes, the international standard is 5 times per hour; the primary purification efficiency of the air purifier must be relatively high.

If there is a continuous source of pollution in the room, these two air purifiers with higher hardness indicators can keep the indoor pollutants at a lower concentration. The CADR value is the physical quantity that can quantitatively characterize the two necessary conditions above the air purifier. “The higher the CADR value, the higher the purification efficiency of the purifier. Therefore, when purchasing air purifiers, the key is to look at the CADR value.”

So, what is the difference between purifiers with different principles? The person introduced that as long as the product quality can be guaranteed to meet the testing of the National Household Appliance Quality Supervision and Inspection Center, they can be used with confidence. However, relatively, the purifier using the filtration principle may have a reduced effect due to the use time, and the corresponding filter screen needs to be replaced. However, there is no concern about the problem of updating the filter after ionization adsorption. After the purifier has been working for a period of time, it can be used only after being cleaned and dried with water. In the past, some purifier products that used the principle of ionization adsorption may generate ozone, which is also solved by the current two-way dual-voltage ionization adsorption technology. For example, the Italian quench air purifier produced by the new technology can filter dust above 1 nanometer (1 nanometer = 0.001 micrometer), inhibit viruses, molds, bacteria, fungi, spores and other microorganisms and daily allergens, and activate indoors. Oxygen, reducing indoor static electricity to avoid ozone generation, has the dual effect of active and passive work.

In order to ensure the efficiency of the purifier, the professional recommends that the consumer be equipped with a purifier that is slightly larger in area to reduce the noise generated during the operation of the purifier and achieve the effect of comfortable air purification.

Bandages

Soft Bandages,Cotton Bandages,Medical Bandages,First-Aid Plaste Bandage

Zhende Medical Co.,Ltd , https://www.zhendemedicals.com