"Only when we are broken we can see it more clearly: the truth about ourselves, others, the world and God–"
https://medium.com/@Elamika/nothing-is-wasted-on-brokenness-and-grace-d7a2584ead67
I don't know how to feel when the people who put out this stuff never explore or report on actual solutions. It makes me wonder.
https://www.thegauntlet.news/p/how-the-press-manufactured-consent
#IAQ I remain convinced a multiple of single 4" filter fixtures suspended throughout space is a compelling design strategy.
https://itsairborne.com/nukit-tempest-review-4328a5c048f4
1941 "Who goes Nazi?" by Dorothy Thompson
https://harpers.org/archive/1941/08/who-goes-nazi/
"This is mentally pathological behavior on a massive level."
https://www.salon.com/2023/12/05/americans-are-sleepwalking-into-a-dictatorship/
#IAQ "If a commercialized cleaner using PC fans similar to the aluminum fabricated PC fan CR box existed, it would provide an ideal solution for commercial spaces."
https://itsairborne.com/my-6-favorite-hepa-filters-air-cleaners-f3668de61f3f
#IAQ I continue to believe a 'tower defense' strategy of multiple, smaller, suspended & floor PC fan filter units throughout a space is a compelling solution.
https://www.texairfilters.com/comparing-the-performance-of-corsi-rosenthal-boxes-made-with-box-fans-and-pc-fans/
#IAQ Recalculated fixture performance for 2" & 4" deep MERV-13 & MERV-14 filters using ASHRAE efficiency values and filter surface areas ( from Jim Rosenthal). Highest CADR with 4" MERV-14 (233 CFM). Download spreadsheet here: https://drive.google.com/file/d/10876l7wQnEMgXvk6rNdkifDWkJxTmRru/view?usp=drivesdk
It seems I'm vastly underestimating the surface area of a 20x20x4" filter. Which is good for performance I suppose but makes estimating (with spreadsheet) confusing.
#IAQ Fan Fixture Zones w/ estimated performance (800 square inch MERV-13/fixture assumed), compared to ASHRAE proposed standard:
#IAQ 140mm 12V Fan Fixture Zone. A central transformer can (ideally) distribute power to multiple fixtures.
#IAQ 140mm 12 V fan fixture and grouping comparisons. (Powering (3) 4-fan fixtures may be more performant than (1) 12-fan fixture.)
I design things.