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Solviva-style vent systems

 
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In Ana Edey's book, she describes that draft that is created when a dark surface is glazed.
I don't have a glazed roof, but I know that your average roof can create a pretty good draft from the soffit vent to the ridge vent.

I'm in the process of building (framed in, wrapped and moving into the basement). I have a steel A-frame East/West roof, 1200 sqft, true cathedral ceiling made of parellel cord trusses on a central log purlin.

Ana Edey talked about a system where they could in the summer (a) close the soffit vent and open vent inside the house in roughly the same place, and roof draft would pull air out of the house (creating good drafts through windows rather like an attic fan). She could also (b) open a vent inside the ridge and cycle house air through the roof in the winter to get solar heated.


..............................Ridge Vent
...............................Valve Vent
........................./.........................\
......................./.............................\
...................../.................................\
.................../.....................................\
.Soffit Vent /Valve Vent..........Valve Vent\ Soffit Vent


Anybody actually use either of these systems? Or thoughts appreciated.

Thanks,
Luke
 
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Makes sense to me. Hot air rises. That air should get replaced by drawing in air from window.

I heard in Hawaii that they create a cooling effect in the hollow areas of interior walls. Drill a hole in the bottom 2x4 plate into the crawlspace, then another thru top plate into attic. It draws the cooler crawlspace air up thru the wall. I thought that was interesting.
 
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