Designing a Static Shading System
Background Material: DH-I chapter 7 | MIT lecture: Designing with the Sun
1. Direct Shading The objective of this exercise is to practice how to design and analyse a static shading systems for a façade facing using the methods discussed in the DH-I chapter 7. In order to do so, you can use the Viper/Shaderade Grasshopper components in DIVA/EnergyPlus.
1. Baseline Analysis As a first step you can build a simple, single zone shoebox model of a sidelit space and investigate different window-to-wall (WWR) ratios as well as the period in the year when the space is in heating and/or cooling mode. The example figure below by Madeline Gardillas and Catherine De Wolf shows a temporal load map of a South-facing office space in Boston with a WWR of 56%. The recommended shading period for the windows is from Mid-March to Mid-November.
1. Shaderade Application Using the Shaderade component in DIVA you can evaluate different static shading design ideas. For example, the figure below shows an exterior perspective and Shaderade analysis of a shading design for the space from step 1. Areas in blue indicate that the shading systems reduces overall annual heating and cooling loads. Areas in whilte indicate that the shading system has very limited impact on overall loads.