News for hackers. Stuff that matters.

A comment on Why every microwave sucks these days, and the death of instant pot. Parent comment

Re:Why every microwave sucks these days, and the death of in... by mrob on Thursday October 26, 2023 @08:28AM (#38024631)
HEPA filtration only matters if you have a clean side and a dirty side. Most air filters exhaust clean air into the same room as the intake, so all that matters is clean air delivery rate [0]. It's often possible to get better clean air delivery rate using higher flow through a less restrictive non-HEPA filter.

[0] https://en.wikipedia.org/wiki/Clean_air_delivery_rate

[ Parent | on HN ]
Re:Why every microwave sucks these days, and the death of in... by bsilvereagle on Thursday October 26, 2023 @11:58AM (#38027415)
The removal efficiency of the filter is built in to CADR, so say a MERV-14 filter with higher air flow and a HEPA filter with lower air flow can have the same CADR.

The Wikipedia article does not discuss the 2 (different!) methods of calculating CADR but this does: https://frdmtoplay.com/nagivating-air-purification/

[ Parent | on HN ]