2019-12-25, 23:44:52
Здравейте.
Весели празници на всички колеги от форума.
Преди доста време, когато реших да си купя пречиствател за въздух, направих едно кратко проучване, какви са главните неща, които определят уреда който клиента избира, дали е подходящ за неговите критерии. Запознах се с редица документи и мисля да споделя най-важните неща, които се отнасят за пречиствателите на въздух за домашни условия.
https://ahamverifide.org/wp-content/uplo...cation.pdf
How It Works
CADR comes from AHAM (Association of Home Appliance Manufacturers). This is a way for you to compare the amount of clean air from air purifiers. The AHAM CADR is a voluntary program so it’s hit or miss whether an air cleaner will have a CADR number.
There are 3 sizes of particles measured. They each give an indication of the air purifier’s ability to remove the smaller particles (smoke) up to larger sized particles (pollen).
Smoke CADR (0.09 – 1 micron)
Dust CADR (0.5 – 3 microns)
Pollen CADR (5 – 11 microns)
There are two factors that influence the CADR ratings scale. They are the filter efficiency and the air flow through the filters.
Taken together they give an indication for how much filtered air you will get from the air purification system.
The CADR represents the amount of clean air coming out of the air purifier on the highest fan speed. It is only measured on the highest fan speed. If you run the air cleaner on a lower fan speed then the CADR will be lower since the fan airflow is less.
CADR is measured in cfm or cubic feet per minute in the US.
For example, if the air purifier produces 100 cfm and the filter removes 90% of particles (efficiency) then the CADR for the air purifier will be 90. 100 times 90%.
In Asia and Europe the CADR is given in cubic meters per hour.
Clean Air Delivery Rate to Room Size
You may be wondering how to convert the CADR to something practical like the size of your room.
According to AHAM, they suggest you take the CADR rating and multiply this by 1.55 to get the room size. This is based on a ceiling height of 8 ft.
For example, a 100 CADR air cleaner will then clean a room size of 155 sq ft.
To go the other way, that is to know your room size and to find the right CADR you would then divide your room square footage by 1.55.
Say your room is 250 sq ft. Divide this by 1.55 and you get 161. This means you will want a room air cleaner with a CADR of 160 or higher.
AHAM recommends you use the smoke CADR to calculate the room square footage. Given this is the smallest particles sizes they measure it seems like the most difficult to achieve a high score.
Надявам се да съм полезен и да внеса известна доза яснота по въпроса.
Весели празници на всички колеги от форума.
Преди доста време, когато реших да си купя пречиствател за въздух, направих едно кратко проучване, какви са главните неща, които определят уреда който клиента избира, дали е подходящ за неговите критерии. Запознах се с редица документи и мисля да споделя най-важните неща, които се отнасят за пречиствателите на въздух за домашни условия.
https://ahamverifide.org/wp-content/uplo...cation.pdf
How It Works
CADR comes from AHAM (Association of Home Appliance Manufacturers). This is a way for you to compare the amount of clean air from air purifiers. The AHAM CADR is a voluntary program so it’s hit or miss whether an air cleaner will have a CADR number.
There are 3 sizes of particles measured. They each give an indication of the air purifier’s ability to remove the smaller particles (smoke) up to larger sized particles (pollen).
Smoke CADR (0.09 – 1 micron)
Dust CADR (0.5 – 3 microns)
Pollen CADR (5 – 11 microns)
There are two factors that influence the CADR ratings scale. They are the filter efficiency and the air flow through the filters.
Taken together they give an indication for how much filtered air you will get from the air purification system.
The CADR represents the amount of clean air coming out of the air purifier on the highest fan speed. It is only measured on the highest fan speed. If you run the air cleaner on a lower fan speed then the CADR will be lower since the fan airflow is less.
CADR is measured in cfm or cubic feet per minute in the US.
For example, if the air purifier produces 100 cfm and the filter removes 90% of particles (efficiency) then the CADR for the air purifier will be 90. 100 times 90%.
In Asia and Europe the CADR is given in cubic meters per hour.
Clean Air Delivery Rate to Room Size
You may be wondering how to convert the CADR to something practical like the size of your room.
According to AHAM, they suggest you take the CADR rating and multiply this by 1.55 to get the room size. This is based on a ceiling height of 8 ft.
For example, a 100 CADR air cleaner will then clean a room size of 155 sq ft.
To go the other way, that is to know your room size and to find the right CADR you would then divide your room square footage by 1.55.
Say your room is 250 sq ft. Divide this by 1.55 and you get 161. This means you will want a room air cleaner with a CADR of 160 or higher.
AHAM recommends you use the smoke CADR to calculate the room square footage. Given this is the smallest particles sizes they measure it seems like the most difficult to achieve a high score.
Надявам се да съм полезен и да внеса известна доза яснота по въпроса.