@GainOfDystopia @LazarusLong13 @SteverRobbins They're a little better (81% vs 62%) but still not close to HEPA and still relying on a high flow rate resulting in multiple passes to be very effective. Also trading off lower flow rate due to slightly higher pressure drop. It ends up being very similar.
https://www.filtrete.com/3M/en...
@GainOfDystopia @LazarusLong13 @SteverRobbins 他们稍微好一点（81% 对 62%），但仍然不接近 HEPA，并且仍然依赖于高流速，导致多次通过非常有效。由于压降稍高，还需要权衡较低的流速。它最终非常相似。
https://www.filtrete.com/3M/恩...