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Do you know the four parameters of air purifier
Time:
2022-07-21 16:32
1. Cadr value
Cadr, also known as clean air delivery rate, is defined as the volume of air that can be purified per unit time, in m3 / h. The higher the value, the higher the purification efficiency. Since the Cadr value of the same filter element for different filter materials is different, attention should be paid to both the particle (solid) Cadr value and the formaldehyde (gaseous) Cadr value when shopping.
2. CCM value
CCM value is the evaluation value of the accumulated purification amount of the filter element, which is also the standard to measure the service time of the filter element. It can be understood that when the clean air volume of the air purifier decays to 50% of the initial value, the total mass of the target pollutants accumulated for purification treatment is counted in milligrams (mg). It is also divided into two values according to the solid state and gas state: particle CCM has four grades from P1 to P4, and formaldehyde CCM has four grades from F1 to F4.
3. EER value
EER, i.e. purification energy efficiency, refers to the ratio of clean air volume and purification power provided by the air purifier under rated status. This means that the higher the value of purification energy efficiency, the better, and the more power saving. Purification energy efficiency is divided into three levels, of which level 1 is the highest level.
4. Noise
Excessive noise will reduce the user's experience. A good purifier should be quiet and noise reduction. When shopping, you can check whether there is a sleep mode, which can maintain a lower degree of purification without affecting rest.
However, in addition to these four parameters, from the perspective of practical use, there are also some indicators that deserve attention.
For example, the sterilizing ability of the purifier and the particle size of many bacteria and viruses are also within the capture range of the high-efficiency filter screen. However, the high-efficiency filter screen can filter bacteria and viruses, but it can not directly inactivate them. Once the filter screen is saturated and not replaced in time, bacteria and viruses will be released into the air again to form secondary pollution.
If a machine without a filter screen is used, such as electrostatic or negative ion technology, although the risk of secondary pollution of the filter screen can be avoided, it also has the function of sterilization and disinfection, but it is easy to produce excessive ozone, which will also affect human health.
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