Task:Using the sun shading chart discuss in groups of two the best options for implementing shading devices on a north, east and west facing façade. Put your findings into sentence format with screen shots of each outcome and email the findings to each of your tutors.
North facing window, summer
North Facing Window summer:
The overhang angle can be 55 degrees.
Vertical Fins Angles are not needed. Currently the building has [44 hours] of shaded already, adding fins will only increase the hours when the building is not needed to be shaded and decrease the comfort hours.
The surrounding buildings and boundary wall have little affect on the building.
The surrounding buildings and boundary wall have little affect on the building.
North facing window, winter
North facing window winter:
The overhang angle can be 70 degrees.
Letting in more sun so that there is more comfortable hours [460 hours] with only [9 hours] that is projected to be Hot (over 27 degrees) which might be welcome in winter.
Letting in more sun so that there is more comfortable hours [460 hours] with only [9 hours] that is projected to be Hot (over 27 degrees) which might be welcome in winter.
West facing window, summer
West facing window summer:
There is a wall along the western boundary of the property which affects the sun coming in.
The overhang angle should be 45 degrees to shade more of the summer western sun.
West facing window winter:
Over hang angle should be the same as summer at 45 degrees.
East facing window summer:
Similar to the west facing window with an obstruction. (two storied house 6m)
The over hang angle could be 60 degrees with [315 hours] of comfortable sun and [24 hours] of hot sun.
Fins will only decrease the comfort sun hours
The overhang angle should be 45 degrees to shade more of the summer western sun.
West facing window, winter
Over hang angle should be the same as summer at 45 degrees.
By increasing the over hang angle will increase the hot sun (27 + degrees) but little affect the comfortable sun.
The hot sun (27 + degrees) still penetrates through the shading for a predicted [8 hours] 
East facing window, summer
East facing window summer:
Similar to the west facing window with an obstruction. (two storied house 6m)
The over hang angle could be 60 degrees with [315 hours] of comfortable sun and [24 hours] of hot sun.
Fins will only decrease the comfort sun hours
East facing window, summer
East facing window winter:
To achieve the relatively same amount of comfortable sun as summer the over hang angle should be 70 degrees however in achieving the similar numbers there is a cost of extra hot sun.
Conclusion:
The Fins are mainly needed in climates with a rather bias sun or a low azimuth angle.
There are ways to maximise the comfortable sun at the cost of increasing hot sun or minimising hot sun at the cost of comfortable sun, its all dependant on client.
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