Awning Versus Overhang Solar Analysis

The solar energy industries association has published a three page document that provides answers to frequently asked questions regarding the federal tax credits for solar energy.

Awning versus overhang solar analysis.

The solar heat in the summer must be blocked by an overhang or other devices such as awnings shutters and trellises. An innovative and helpful solar tool is an overhang annual analysis the beta release of new version on the website sustainable by design. Indirect diffuse radiation should be controlled by other measures such as low e glazing. 3105 4 2 design of the structural framing members shall be based on rational analysis using the applicable wind loads of chapter 16 as shown below.

The key objective of the solar analysis was to compare the solar irradiation in the internal walls and internal floor in kw h m 2 in each case study for the definition of the impact of different overhang angles in energy savings in addition the relationship between important parameters taken into account for the design of bioclimatic buildings such as climatic conditions and building. How do i determine the correct amount of shading sun. Roof overhangs control building heat gain sunlight the physical dimensions of an overhang are an important element because overheating will occur unless the overhang provides enough shade. To the greatest extent possible limit the amount of east and west glass since it is harder to shade than south glass.

Developed and maintained by christopher gronbeck in seattle wa two versions of the tool can be used. In special cases like analysis or design of bipv systems exact analysis of shadow voltaic systems overhangs vertical shading fins awnings etc is also very important. You can use an. Window awnings can reduce solar heat gain in the summer by up to 65 on south facing windows and 77 on west facing windows.

A patio aluminum awning adds decoration to a home s exterior and provides needed protection and shade. With the window heights and overhangs i used in the model at noon on june 21 the entire glazing of the south elevation windows are completely in shadow but just barely. I used sketchup to help determine how the solar path would fall on the house i am designing. An awning is a roof like shelter installed on a home s exterior that shades windows from the sun s heat and glare.

Similar analysis is also part of passive house or solar house design overhangs must also be planned very carefully in such case. The beta release includes advanced features such as accounting for diffuse and reflected light. At noon on january 21 the glass is completely exposed. Canvas awning choosing the best patio aluminum awning comes down to more than cost.

You should also consider efficiency and functionality. Awnings can also shade outdoor living spaces. Awnings can be fixed or retractable.