What are the different sun shading devices?
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Shading devices on the external side of the window include shutters, awnings, canopies, blinds, and projecting horizontal and vertical fins. Correctly designed, these sun controls are the most effective of all for reducing solar radiation since the absorbed heat is dissipated externally.
How do you create a sun shading device?
Designing Shading Systems Use fixed overhangs on south-facing glass to control direct beam solar radiation. Indirect (diffuse) radiation should be controlled by other measures, such as low-e glazing. To the greatest extent possible, limit the amount of east and west glass since it is harder to shade than south glass.
What is overhang shading device?
A horizontal overhang is a straightforward method for shading solar glazing in summer. Passive heating strategies call for major glazed areas (solar glazing) in a building to be oriented towards the equator (south in the Northern Hemisphere and north in the Southern Hemisphere).
What is horizontal shading device?
Horizontal shadow angle The horizontal shadow angle (HSA) is required for (or cast by) vertical shading devices. It is the horizontal angle between the normal of the window pane and the azimuth of the sun. HSA = wall azimuth – solar azimuth. Horizontal shadow angle.
What is external shading device?
External shading devices, such as eaves, awnings, and verandahs, play a critical role in reducing unwanted solar heat gain, especially in cooling-dominant climates and during summer in temperate climates. Shading devices work firstly by restricting unwanted direct solar radiation through windows.
How is solar shading device calculated?
To calculate the depth (d) of the horizontal shading device, multiply the obtained ratio (d/h) by the needed shading height (h). To calculate the protrusion (p) of the horizontal shading device, multiply the obtained ratio (p/h) by the needed shading height (h) for the selected hours (cut-off times).
What is egg crate shading device?
A combination of horizontal and vertical elements forming an eggcrate-type shading system is often used in the architectural design of building facades. An analytical-numerical method is presented to estimate the shading effect of such a structure on vertical windows of arbitrary azimuthal orientation.
What is passive solar shading?
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. When sunlight strikes a building, the building materials can reflect, transmit, or absorb the solar radiation.
Why do we need shading?
Reduce Exposure to Harmful UV Rays – The number one reason to add shade structure is to reduce exposure to the sun’s harmful UV rays. Even during cooler weather or cloudy days, the sun causes damage. Prolonged exposure can drastically increase your risk of skin cancer.
Why is solar shading important?
Solar shading is important to mitigate the impact of a building’s energy use whilst providing thermal and visual comfort. The sun makes a huge difference in the design of a building and can present a serious problem to large areas of glazing.