[GBlist] Roof angle for active solar?

["Robert Jordan" <rwjordan@charter.net>]

I am designing a house West of Boston, Latitude approximately 40.5 degrees,
that I hope to some day have passive solar on.  The rear of the house faces
directly true south.  The house will be well insulated and tight.  I gather
that DHW is viable.  Is it worth trying to collect enough hot water to
satisfy at least part of the heat load?  I also hope to have a masonry
heater.  Further down the road is PV.  I would like to design the roof at a
pitch such that the panels can lie flat on the roof.  Can anyone offer
advice as to the best roof pitch for this program?
Thanks in advance,
Bob Jordan




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