A lot of national parks use the solar chimney for ventilation of outhouse style toilets. It is very effective. They use about a 9 inch diameter PVC pipe that goes up the entire side of the building and several feet above, so it gets a good amount of sun exposure. I think you could do it with smaller pipe but surface area is definitely important.
You could use that to create the vacuum and pair it with a swamp cooler type setup at the intake vent, thus having a passive cooling system that operates most strongly when it is most needed. That is, when the sun is shining. On Aug 26, 2011 8:38 PM, "ken winston caine" <ken.winston.ca...@gmail.com> wrote: -- You received this message because you are subscribed to the Google Groups "hexayurt" group. To post to this group, send email to hexayurt@googlegroups.com. To unsubscribe from this group, send email to hexayurt+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/hexayurt?hl=en.
