Should I add 2 filters on top of each other? (No)
As discussed here, it decreases performance. The 1″ filters are fine – although you would get even better performance with 2″ filters. Just not 1″ filters doubled up.
General
I need some sort of letter and tactics to overcome objections.
Here’s such a letter. It addresses Air cleaner efficacy in general, and the Corsi/Rosenthal Box, in specific. HVAC infrastructure concerns (it will not cause issues). Electrical concerns (will not cause fires). Just emailing it to the concerned individual. Better would… Read More »I need some sort of letter and tactics to overcome objections.
How long does it take to flush/wash out a room after being occupied?
Simple question, complicated answer. First one – assuming you have an air cleaner – the time it takes to do 3 air changes. Source:
Wouldn’t it work better if we added UVC bulbs under the shroud like hospitals do?
This is a great question! Two part answer. First part is that it’s actually two different technologies. Bulbs are usually used to clean items in a sealed container in a hospital. Hospitals use UVGI to clean the air. And it… Read More »Wouldn’t it work better if we added UVC bulbs under the shroud like hospitals do?
Science Project – do you have any ideas?
Maybe 🙂 . This is page is really just a collection of ideas to help inspire YOU. It was conceived as a combination of physics (aerosols), biology (lungs), and math (large number conversions). All parts are meant to be used… Read More »Science Project – do you have any ideas?
How was the optimum shroud developed by David Elfstrom?
Laborious Experimentation – drop him a “like” on Twitter! Scroll up on this thread to see his excellent work! And this optimization thread (scroll up):
How does the box stack up against the NYC filters installed in school?
Better. NYC’s CADR for smoke was 129. The Corsi/Rosenthal Box CADR was 132. And that was with MERV 10/11 filters. The Corsi/Rosenthal Box should be made with MERV 13 filters, so will test even higher. These measurements are in process.