On 21 Nov 2004 14:53:14 -0500, wrote:

ASHRAE's "15 cfm per occupant" standard is designed to avoid health issues.
Smoking, radon, and so on may require more.

For a family of four, that comes to 60 CFM.

You have stated that miners have been shown to pass out at 5 CFM per
person. For our family of four, that comes to 20 CFM.

You advocate the Canadian model, where the passive leakage is reduced
to 2.5 CFM. Then you would make up the difference by forced
ventilation.

Is this a fair representation of your position?


Gary R. Lloyd CMS
HVACR Troubleshooting Books/Software
http://www.techmethod.com