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CHAPTER 8: SUNSHINE AND SHADING DESIGN - Coggle Diagram
CHAPTER 8: SUNSHINE AND SHADING DESIGN
Shading devices design
HSA : Horizontal shadow Angle
Describes the angle in plan
Relevant for vertical shading devices
Difference in azimuth
HSA between +/- 90° and 270° = sun is behind the facade
VSA : Vertical Shadow Angle
Profile angle
Angle made on the vertical plane
Describes projection of solar altitude
Exists when HSA is between -90o and +90o
Calculation of VSA and HSA
Time, Date and Month of the year
Altitude and the Azimuth
Latitude (Which angle North/South)
Orientation of the building facade
Shadow angle protractor
Usage of HSA and VSA
Determine extent of Overshadowing
Appropriately sized shading control device
Sunlight penetration into a building
Function of Shading Device
Energy saving
Provide shelter from solar heat gain
