Research in 2005 at Lawrence Berkeley National Laboratory worked on using tracer gases for air flow testing in buildings. The LBNL study on focused on using readily available inexpensive hardware to inject and sample tracer gas—usually CO2—without the problems of poor mixing and sampling that have previously plagued this technique.

For duct air flows, in particular, problems with getting uniform mixing and sampling also made tracer gas diagnostics unreliable. That research focused primarily on improving the measurement of air flows in commercial ducts, but the techniques developed through this research can be applied just as usefully to measuring air handler flows in residential systems.

With these problems resolved, and with the cost of high-accuracy CO2 analyzers dropping, tracer gas techniques are quickly becoming both cost-effective and reliable outside of the research environment. ...

Read more from the Home Energy article, "New Developments in Air Flow Measurements" by Iain Walke...

Tags: LBNL, airflow, energy, gas, home, magazine, tools, tracer, trade

Views: 11

Videos

  • Add Videos
  • View All

Twitter

Latest Activity

Amber Vignieri posted a blog post
23 hours ago
Barbara Smith's video was featured

Weatherization: Crawl Spaces

Crawl Spaces - Training for Weatherization Installers. Re-posted from Seventhwave.org
yesterday
Kelly replied to Colin Genge's discussion What is the value of using a pressure pan to test outlets?
"Hi Colin, I like using the pressure pans at outlets to guide my inspections once I'm in the…"
yesterday
Leo Klisch commented on Home Energy Magazine's blog post Natural Gas is Becoming Less Attractive
"It seems a bit wasteful to use NG for such a low temperature application as space heat. If a heat…"
yesterday
HomeWiz posted photos
yesterday
Kobus Niemand commented on Jim Gunshinan's blog post A Healthy Home and a Healthy Bottom Line
"Thanks for the download! Great paper,  Homes receiving EE can experience increases in radon…"
yesterday
Jan Green replied to Rob Madden's discussion DOE Home Energy Score
"Agreed Sandy on all counts!   HES and HERS will be confusing to everyone that doesn't…"
yesterday
Steven Lefler replied to David Eakin's discussion A Growing American Problem In Search Of Valid Answers
"Modular Lifestyles has developed proven Net Zero factory built as a modular or his HUD code…"
yesterday

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service