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.  Home Energy Pros is sponsored by the Better Buildings Residential Network.

Latest Activity

Colin Genge commented on Greg Labbe's blog post Technical Tape Desecration
"i don't have a picture of it, but my Honda Accord's windshield was replaced and it leaked…"
10 minutes ago
terry nordbye replied to Jim Gunshinan's discussion PHIUS+2015 Climate-Specific Passive Building Standard
"Both standards are good. Both standards win. PHI knows how to build a PH in the USA. The very…"
3 hours ago
Greg Labbe replied to Jim Gunshinan's discussion PHIUS+2015 Climate-Specific Passive Building Standard
""It’s important to note that the PHIUS+ 2015 metric is an optimization of the European…"
4 hours ago
Melissa Ulbricht posted a blog post
4 hours ago
David M Cohen added a discussion to the group Job Board
5 hours ago
David M Cohen joined Diane Chojnowski's group
Thumbnail

Job Board

This group is for posting jobs related to all aspects of the home performance industry including…See More
5 hours ago
Profile IconSarah Mostafa, Michael Kelemen, Sean Maxwell and 3 more joined Home Energy Pros
6 hours ago
Evan Mills replied to Sandra K. Adomatis, SRA's discussion Green Mortgage Appraisal Roundtable
"Would love see your slides, but the AI site requires login.  Can you post them here or email…"
19 hours ago

© 2015   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service