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re: problem with winter dryness
22 nov 2004
gary r. lloyd  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.

these 19th century coal-mining experiments were an early basis
for ventilation standards.
 
>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.

sure. this also works in most of europe, and in many books on efficient
home design, eg the superinsulated home book, by nisson and dutt
(wiley and sons, 1985.)
 
>is this a fair representation of your position?

sure. it may be time now to look for better solutions instead of problems.

nick




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