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: 9

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Steven Lewis replied to William Fisher's discussion Can tankless water heaters provide hot water even when the groundwater is fairly cold?
"Look at reducing the ambient humidity in the home.  The dew point is the key to the…"
17 hours ago
Olivia Taylor posted blog posts
yesterday
norman farwell replied to Bryan Pringle's discussion Dense packed cellulose in basement?
"Ha, we're on the same wavelength.  That's the big question--I'm still thinking…"
yesterday
Bryan Pringle replied to Bryan Pringle's discussion Dense packed cellulose in basement?
"Thanks Norm, we'll have a couple of case studies when all is said and done. Just curious, do…"
yesterday
norman farwell replied to Bryan Pringle's discussion Dense packed cellulose in basement?
"Bryan,  I am trying the same thing for most of the same reasons and also against advice to the…"
yesterday
Morgan M Audetat commented on Sean McLoughlin's blog post Programming in-floor electric radiant heat, is it worth it?
"You would need a large bathroom to see the difference. We install them both ways depending on the…"
yesterday
Dennis Heidner commented on Sean McLoughlin's blog post Programming in-floor electric radiant heat, is it worth it?
"The key is that this is the bathroom.  Occupancy is not constant.  It is more likely used…"
yesterday
Charles Cormany commented on Sean McLoughlin's blog post Programming in-floor electric radiant heat, is it worth it?
"I have seen resistance floor heaters add nearly $100 per month to an electric bill. Since most…"
yesterday

© 2015   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service