Experimental Verification of CADR of Zebsol Air Purifier

In this video, I am sharing the verification of the CADR of the Zebsol Air purifier.  CADR is the single most important performance parameter for an air purifier and determines the maximum room size that you can clean with a given CADR. The general rule of thumb is that, whatever the CADR in Meter cube per hour, the room size can be around 30% larger in square feet. For e.g if your CADR is 100 M3/Hour, then the max room size can be around 130 Sq feet.  Sometimes the CADR is given in CFM, and you can convert it to M3/H by multiplying the CFM by 1.7. In this video, you can see that the CADR of the Zebsol air purifier is over 500M3/Hour.

The CADR is a function of two factors – The wind speed coming out of the purifier and the area of the duct through which the air is coming. It is exactly like measuring the volume of water coming out of a pipe. It will be a function ofthe pressure of water and the size of the pipe. The only issue is that you need a meter called an anemometer, which measures the wind velocity. Once you have wind velocity, you can measure the size of the duct and use an online calculator to calculate the CADR. I am sharing the link for buying a cheap anemometer from Daraz and an online calculator for measuring the CADR.

https://www.daraz.pk/catalog/?q=anemometer%20 . You can find one that is as low as Rs 3000/-

Here is a link for an online CADR calculator

https://www.engineering.com/resources/air-flow-calculator/