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The clean air delivery rate (CADR) is a figure of merit that is the cubic feet per minute (CFM) of air that has had all the particles of a given size distribution removed. For air filters that have air flowing through them, it is the fraction of particles (of a particular size distribution) that have been removed from the air, multiplied by the ...
As for CADR, the guidelines set by AHAM state that an air purifier’s CADR should “be equal to at least two-thirds of the room’s area. For wildfire smoke, AHAM recommends a smoke CADR equal ...
Before purchasing your new air purifier, check the decibel rating in the product description; some purifiers are rated as low as 24 dB. For reference, the average whisper volume is 30 dB. Third ...
They found that this design's "effective clean air delivery rate [CADR] increase[d] with fan speed, from about 600 to 850 ft 3 min −1 (1019 to 1444 m 3 h −1)". [3] Based on the cost of their design, this output amounted to $0.08 per CADR, or roughly ten times cheaper than commercial air purifiers, with quieter operation.
Divide your room’s square footage by 1.55 to find its minimum CADR rating; a 150-square-foot room, for example, requires an air purifier with at least a 97 cfm CADR rating. Look for energy savers.
Clean air delivery rate (CADR) is the amount of clean air an air cleaner provides to a room or space. When determining CADR, the amount of airflow in a space is taken into account. For example, an air cleaner with a flow rate of 30 cubic metres (1,000 cu ft) per minute and an efficiency of 50% has a CADR of 15 cubic metres (500 cu ft) per minute.
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