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Solar Energy - It is stated that a rectangular building facing North (in the Southern hemisphere) is the most energy efficient shape

Question 2 Building shape and orientation [12]

It is stated that a rectangular building facing North (in the Southern hemisphere) is the most energy efficient shape and orientation for latitudes away from the equator. Explain in detail why this is the case. [6]

If you build a new rectangular house facing North, make recommendations on window placement and size. [6]

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A wall facing North in the Southern hemisphere is relatively little warmed by the sun in the summer when the sun is high in the sky, because of the sharper angle of irradiation, but it is much more warmed by the low sun in winter.
This is just the right schedule as a building may need heating in winter and cooling in ...

Solution Summary

It is stated that a rectangular building facing North (in the Southern hemisphere) is the most energy efficient shape and orientation for latitudes away from the equator. Explain in detail why this is the case. [6]

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