[MHml] Air vloume required

[S Fishwick]

 -----Original Message-----
On: Fri, 27 Oct 2006 20:02:11 +0800
Wrote: "Rob Denney" <proa at iinet.net.au>
>
> I am designing a solo race boat which will have a closed
> hatchway.  I need
> to provide sufficient air for the occupant while he/she sleeps.
>
> Does anybody know how much air is required by a sleeping person?
>

Offhand no, although I worked out once how much the CO2 and temperature
levels would rise in in an operations room when the forced ventilation
failed. IIRC there was a lot of volume per person (room height was
around 10m) and we got only a couple of hours!

For what it's worth, UK building regs appear to require 25000 sqmm (say
40 sqin) vents in a small bedroom (albeit for two people). I would have
thought that a sealable vent or two vent was a better choice than a
hermetically sealed box as it gives the option of riding out bad weather
below indefinitely.

JMHO
Simon