Associate professor at Portland State University. Working on indoor air quality and building science.
Portland, OR
Joined October 2009
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Summer's here and wildfires are looming large - now is the time to prep for woodsmoke events. I'm sharing some of my thoughts on creating a "clean room" in your home using air cleaning, air sealing, and simple strategies for managing indoor emissions:
elliott-gall.medium.com/wild…
Elliott Gall retweeted
.@linseymarr of @virginia_tech @VirginiaTechCEE evaluated the impact of an in-duct #BipolarIonization system in a lecture hall and found that #ionization did not significantly affect culturable #Airborne bacteria.
#OpenAccess ACS ES&T Air: go.acs.org/buJ
ALT TOC image from the article
Thrilled to announce the launch of a 16-credit graduate certificate in Healthy+Efficient Buildings @MaseehCollege @MMEpdx
lnkd.in/gBc--vnZ
Over 1-year you'll learn fundamentals of HVAC, building energy, indoor air quality + elective. DM me for more info!
Elliott Gall retweeted
NEW FOCUS: After the Smoke Clears: Wildland–Urban Interface Fires and Residues in Nearby Homes ➡️ buff.ly/4ceXr5v @GouwLab @ChemDelphine @etgall @arthurmcchan @j_g_allen @ShantanuJathar
Great work by @brettwstinson Full paper at: pubs.acs.org/doi/10.1021/acs…
One more study presented by Brett Stinson comparing PM removal from simulated wildfire smoke. CR box wins again.
#IndoorAir2024
Fantastic work by Amity and @brettwstinson. Check out the open access paper here: sciencedirect.com/science/ar…
Declaring victory on #IndoorAir2024 day 1 w/ @KarenCDannemiller. Excited for tech program to begin tomorrow.
Fantastic cover for the great work, by lead author @brettwstinson
In this ACS ES&T Air article, @etgall of @Portland_State characterizes and evaluates the ability of #aircleaners to remove particle and gas-phase pollutants under realistic indoor #wildfiresmoke conditions.
Read the cover story here 👉 pubs.acs.org/doi/10.1021/acs…
ALT TOC image from the article
Elliott Gall retweeted
In this ACS ES&T Air article, @etgall of @Portland_State characterizes and evaluates the ability of #aircleaners to remove particle and gas-phase pollutants under realistic indoor #wildfiresmoke conditions.
Read the cover story here 👉 pubs.acs.org/doi/10.1021/acs…
ALT TOC image from the article
The CDC has stated "construction quality...could substantially affect the performance of DIY air filtration units". Our new study on CR Boxes sought to investigate this claim. Main result? 8 novices built 8 different CR Boxes w/ 8% variability in CADR.
sciencedirect.com/science/ar…
Finally, we modeled a scenario where a newly-built CR box is immediately deployed, e.g. to a bedroom during a wildfire smoke event. Across AER 0.1-1 /h, CR box significantly reduces PM2.5 while there was a short period of elevated BTEX due to off-gassing from tape.
This was a really fun study, with great work by @brettwstinson and enabled by a fantastic summer undergrad Amity Deters, who will be presenting this work @IndoorAir2024!
Glad to share our recently published study in ES&T Air evaluating 13 different air cleaners for PM and VOC removal under wildfire smoke conditions. We evaluated 13 different commercial and DIY air cleaners in a test chamber w/ pine needle wildfire smoke challenge
Some quick findings. All tests on highest setting. DIY builds (CR Box (D1), local design called Owl air (D2)) had high PM CADRs, variable across particle size. H = HEPA filter, S = sorbent, A = additive, D = Do-it-yourself. Not naming commercial units, so please don't ask.
So our survey of commercial and DIY units points to some trade-offs if one is looking for removal of both gas- and particle-phase pollutants in wildfire smoke. Great work by Brett Stinson and @LaguerreAurelie on this. More to come soon!
Full paper here: pubs.acs.org/doi/10.1021/acs…