2 minute read
Comparison with Characteristic Environments
Advertisement
On the psychometric chart, the data points of Oasis Terraces largely overlap with those of park, aircon alley and sealed surface. They stray away from the forest data points, which are closer to the comfort zone in general.
However, that does not imply that Oasis Terraces and these locations give visitors the same sensation. Based on our physical experience, the rooftop of Oasis Terrace, for example, was much more cooling and comfortable than the sealed surface even though the data points overlap. This is because the rooftop of Oasis Terraces has good natural ventilation, which improved the comfort level there. In other words, the intervention suggested by the psychometric chart is already in place.
Chenxiao's Room at
Room at PGPR
Prince George Park Residence (PGPR) is located at the Southern border of the NUS Campus.
The entire compound consists of circular arcs facing the sea. Each block are subdivided into 10 to 12 levels, and my room is located on level 9
Annual Wind Rose
The prevaing wind direction are North-East in January and South East in June. Due to the blocking effect of tall buildings in the South, the wind speed in January is hypothesized to be slower, as compared to the ones in June.
In addition, since the is situated in the Valley region, the low pressure zone is created, which increases the speed of wind towards the South in January
Daily Sunlight
Due to some terrain constraint, the Block that I live in is east-west facing. In the morning, my room would be covered entire in the shade, thus one tends to feel cooler. According to the light and shadow analysis, my room is usually well-shaded in the morning, while exposed to direct sunlight for the entire afternoon.
January 08:00
Block 11 (highlighted) sits on the rear end of the compound, and my room faces the sea in the west direction
It is adjacent to the King Albert's Park, and surrouded by many low-rise buildings and greenery on all directions.
Although the southern adjacent block would be blocked by the shadow of the Z-shaped building in front, my block would be exposed to sunlight until the sun goes down, owning to a small courtyard that separates the two. The prolonged incident sunshine increases the room temperature in the afternoon.
January 12:00
January 15:00
June Wind Condition January Wind Condition
Cross Ventilation
Since each small cluster has four units, and together flanked by bor a small corridor with large perforations, wind could flow through the corridor and enter each individual rooms through the wind tunnels.
This cross-ventilation effect is stronger in June, when the prevailing wind direction is from the ocean from the west, which is directly perpendicular to the openings on corridors. In comparison, prevailing wind from the north would be channeled by sideway right next to my room, thus the effect is less pronounced.
Fins and Louvres
The first adaptive strategy is the use of self-shading fins and louvre. As shown in the axonometric drawing of the room, the window on the right is slightly indented, with an array of thick grills on top to filter out some of the light rays, the louvre system also prevents excessive illuminance near the bed, where the head rests. When the window R is opened, the illuminance and temperture drops by around one third and 0.1 degree respectively, thus the strategy could be argued to be effective. In terms of air circulation, due to the restricted angle of opening, especially on the right window, the air circulation in the interior of the room is limited. Hot air tends to rise and gather above, closer to the ceiling. When the fans are on, however, interal circulation is achieved and hot air could dissipate out from the door or windows.
In addition, they could potentially increase the windspeed along the vertical sides of the buildings, as the prevailing wind are forced to pass through a narrow slit, and due to Venturi effect, flow faster before entering the windows.