SOLAR CONTROL IN ARCHITECTURE
[ QUAH QIU YU | 1001644535 ]
22nd JUNE (SOUTH WEST) AZIMUTH 9.00AM 64⁰ NE 11.00AM 38⁰ NNE 1.00PM 320⁰ NW 3.00PM 296⁰ WNW
ALTITUDE 43⁰ 65⁰ 65⁰ 43⁰
HSA 0⁰ 0⁰ 0⁰ 72⁰
VSA 0⁰ 0⁰ 0⁰ 70⁰
SHADOW ELEVATION NA NA NA 58⁰
22nd DECEMBER (SOUTH WEST) AZIMUTH 9.00AM 124⁰ ESE 11.00AM 153⁰ SE 1.00PM 210⁰ SSW 3.00PM 237⁰ SW
ALTITUDE 38⁰ 58⁰ 58⁰ 38⁰
HSA 0⁰ 76⁰ 17⁰ 11⁰
VSA 0⁰ 81⁰ 60⁰ 39⁰
SHADOW ELEVATION NA 66⁰ 12⁰ 15⁰
My selected window opening is located at the south west of the house as shown. Thus, the window opening will receive glared sunlight mostly in the afternoon and evening. Sun-shading device is one of the most efficient passive design to be implement in a building. As an architect, it is important to take consideration into such aspects in order for the building design to walk with the environment. As most of the time, user tends to install air-conditioned in bedrooms to increase their thermal comfort within the space. Therefore, a suitable shading device is crucial to shade direct sunlight and heat gain into the bedroom. Based on my situation, I would suggest a 1000mm (Width) x 3000mm (Length) horizontal panel slanting at 30⁰ to be installed at the window opening facing southwest. By installing such shading device, the heat gain into the space which is the bedroom will be decreased and thermal comfort can be achieved. The analytical studies of the proposed shading device is recorded as following:
JUNE 22 TIME AZIMUTH ALTITUDE HSA VSA
9AM 64⁰ NE 43⁰ 0⁰ 0⁰
11AM 38⁰ NNE 65⁰ 0⁰ 0⁰
1PM 320⁰ NW 65⁰ 0⁰ 0⁰
3PM 296⁰ WNW 43⁰ 72⁰ 70⁰
No direct sun light penetration into bedroom.
No direct sun light penetration into bedroom.
No direct sun light penetration into bedroom.
There is direct sun light penetration into bedroom.
NA
NA
NA
SHADING PROPOSAL
NA
NA
NA
SHADOW ELEVATION
NA
NA
NA
BEFORE
STUDIES VIA HELIODON
AFTER
58⁰
Conclusion, on the June 22nd, the window opening which is located southwest does not receive much direct sun light penetration most of the time except at 3pm. The proposed shading device is able to prohibit the direct sun glared into the bedroom at 3pm while also allowing a small amount of light. A small amount of natural lighting can reduce the usage of artificial lighting within the space. Other than that, there is not much of a concern of the window opening facing southwest on the June 22nd.
DECEMBER 22 TIME AZIMUTH ALTITUDE HSA VSA
9AM 124⁰ ESE 38⁰ 0⁰ 0⁰
11AM 153⁰ SE 58⁰ 76⁰ 81⁰
1PM 210⁰ SSW 58⁰ 17⁰ 60⁰
No direct sun light penetration into bedroom.
There is direct sun light penetration into bedroom.
There is direct sun light penetration into bedroom.
66⁰
12⁰
3PM 237⁰ SW 38⁰ 11⁰ 39⁰
BEFORE
STUDIES VIA HELIODON
AFTER
NA
SHADING PROPOSAL
NA
SHADOW ELEVATION
NA
There is direct sun light penetration into bedroom.
15⁰
Conclusion, on the Dec 22nd, the window opening which is located southwest received a lot of direct sunlight throughout the day except in the morning. Therefore, it is crucial to add a shading device to the opening as proposed. We can see that the shading device is able to block direct sunlight penetration into the bedroom while at 11am, there is a small amount of natural lighting into the space. It is relatively fine to receive morning sunlight compared to sunlight from noon onwards as the temperature and heat gain increases by then.