Roof Overhang Passive Solar Design

Here s a link to a free web based tool to help you size roof overhangs on a passive solar building.

Roof overhang passive solar design.

How roof overhangs or other window overhangs work to control heat and solar gain. In addition the heat produced by the sun causes air movement that can be predictable in designed spaces. Works worldwide by latitude or address. Borst engineering construction llc competence integrity and professionalism are integral to all that we do.

User 757117 jul 16 2012 05 54pm 3. Passive solar design refers to the use of the sun s energy for the heating and cooling of living spaces by exposure to the sun. In passive solar home design exterior roof overhangs provide a practical method for shading building elements such as windows doors and walls. Cost effective passive solar design.

When sunlight strikes a building the building materials can reflect transmit or absorb the solar radiation. I also urge you to read this article. In passive solar home design exterior roof overhangs provide a practical method for shading building elements such as windows doors and walls. Because the sun travels different paths across the sky in the winter low and summer high time an overhang can be constructed to utilize and manipulate the heat energy from the sun.

An overhang or some sort of solar control or solar shading is a crucial element in passive solar design because it blocks the sun s heat energy when it is not desired. Interactive online passive solar eaves calculator. Overhangs are most effective for south facing elements in the northern hemisphere and at midday. How roof overhangs work.

The size of the window width and height and the window s relationship to the roof the space above the window influences the direct and indirect gain of solar heat. 24 dec 2012 02 45 pm. For instance several features of a window will influence gain of solar heat and shade. Jonr senior member posts 5341.

Overhangs are most effective for south facing elements in the northern hemisphere and at midday. 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. Borst passive solar roof overhang design calculator. You can use the free software sketchup to draw the house and it will draw sun shadows for any date time at your location.

Erik not sure what kind of insolation you receive at your site but it might be worth it to consider the.