Here s a link to a free web based tool to help you size roof overhangs on a passive solar building.
Passive solar roof overhang calculator.
The correct amount of eave overhang along the north side of the building is what makes passive solar design work in both winter and summer.
Passive solar roof overhang design.
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Interactive online passive solar eaves calculator.
I also urge you to read this article.
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The size of the window width and height and the window s relationship to the roof the space above the window influences the direct.
Erik not sure what kind of insolation you receive at your site but it might be worth it to consider the.
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An important component of passive solar design is calculating building openings doors and windows and roof overhangs.
This is a new overhang analysis tool providing visual feedback of the overhang shade at the selected date time as well as an annual performance chart.
This tool may not work in certain old browsers so in that case you may wish to try a different browser or use the old version feedback is welcome on this new tool and improvements continue to be made.
For instance several features of a window will influence gain of solar heat and shade.
User 757117 jul 16 2012 05 54pm 3.
Passive solar fenestration exposure.
Work out the right window solar overhang required.
Cost effective passive solar design.
Jonr senior member posts 5341.
Design solar altitude angle for full sun deg from passive solar altitude angle calculator build height of roof overhang from top of glass feet or leave blank build depth of roof overhang from glass feet or leave blank requested solution 0 full shade full sun 1 full shade 2 full sun.
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Borst passive solar roof overhang design calculator.
24 dec 2012 02 45 pm.
Works worldwide by latitude or address.
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You can use the free software sketchup to draw the house and it will draw sun shadows for any date time at your location.