LumberJocks

clagwell's Blog

  • Advertise with us
This blog is written by clagwell | 11 entries so far

Latest Entry

Boxfan Ambient Air Filter Hack Revisited #6: CFM and Efficiency - Part B, the Filter

06-28-2020 05:00 PM by clagwell | 0 comments »

In the last post we looked at the effect of CFM on the length of time it takes to reduce the dust concentration in a room. That applies to either venting outside and bringing in clean air or passing the air through a perfect filter. Lacking a perfect filter we have to ask what effect the filter capture efficiency has on the air clearing rate? Let’s start with the example from the previous post and assume 1,000 particles per cubic foot to start. At 500 CFM we’re sending 500,000 particles per minute through the filter. If the filter is, say, 80% efficient then we’re removing 0.80×500,000 particles per minute = 400,000 particles per minute from the room. A 0.80...

Read this entry »

Older Entries


DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com