CHAPTER 21 I PASSIVE DESIGN


21.25 Shading devices: notice the stiped shadow pattern cast by the 


21.26 Shading devices: the brise soleil significantly reduces solar gain, preventing overheating.


REVISION EXERCISES


1 Describe the influence that a site’s latitude has on solar gain. 2 Explain, using neat freehand sketches, how the earth’s axis tilt has an effect on sun angle during summer.


3 Calculate the maximum sun angle during summer and winter at your home’s location. (Hint: look up your home’s latitude using the Google Earth app.)


4 Explain, using neat freehand sketches, the features of a home designed to optimise solar gain. 5 Show, using neat freehand sketches, how you would redesign the ground floor of your home to optimise solar gain. (Note: show before and after floor plans and indicate the direction of North.)


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