Conclusion Thermal Comfort Chart Macro Analysis Rhombus Bangsar Passive Design 1 : Natural Ventilation Rhombus located along Jalan Penaga and nestled in the Klang Valley’s premier lifestyle hub of Bangsar. It’s avant-garde design and striking modern interiors serve to provide a private home for the discerning. Exclusively for lease, each home features expansive outdoor terraces with unparalleled views of the KL cityspace. This architecturally distinctive residence is also a PAM’s Gold Award and sole winner of the Malaysian Institute of Architects 2013 Award in its category. Beside that, Rhombus also received the Green Building Index Certification because of its green features. Based on the figure 1, site plan on the annual wind rose diagram, monsoon wind with a high frequency will come mainly from the north east direction. The architect took advantage of it and designed Rhombus with the orientation that the east and north- east facades will receive most wind. The Rhombus are designed with residential rooms are facing the east side, to gain maximum wind to regulate the units. The neighboring building, Bangsar Peak, are located next to its west direction. The monsoon wind that comes from north east will meet Bangsar Peak and pushed back to the direction of Rhombus's west facade with openings. This will aid the building with more natural ventilating air to let stack ventilation and cross ventilation to occurs. The building has openings around the common area, which is its's first 3 floors. Instead of relying on air conditioning, the common areas depend on the natural wind and ceiling fans to regulate the temperature. Cross-ventilations and Stack-ventilation principles are also applied into Rhombus's design. Figure 1 Figure 2 Stack Ventilation According to MS1525, stack ventilation is where air is driven through the building by vertical pressure differences devel- oped by thermal buoyancy. The warm air inside the building is less dense than cooler air outside, and thus will rises and try to escape from openings high up in the building envelope; cooler denser air will enter from the openings lower down. At the same time, the ambient air replaces the air that has risen, become a ventilation. Based on figure 2, section of Rhombus, there are few openings among ground floor, first floor and second floor, mainly open- ings are located at the second which also connected to the swimming pool area to let the warm air escape from the build- ing. As a matter of fact, warm air rises and cool air sinks, there- fore, it is much more hotter on the second floor compared to the ground floor of the building. When the hot air rises, it leaves the lower space vacuum, whcih allows fresh air to come into the building and form a cycle of ventilation. Based on the thermal comfort chart on the right hand side, the lowest and highest humidity percentage for Bangsar are 51% and 90% relatively. Neither both of the humidity percentage belongs to the Ideal comfortable zone. The chart shows the space within the building isn’t within the thermal comfort range. Therefore, natural ventilation is applied in this building to bring the heat away from the building, so that the user within the build- ing will be more comfortable. In conclusion, the building has achieved the thermal comfort range through the usage of natural ventilation. The building has successfully applied the ventilation theories in this building. The building could still achieve thermal comfort without the usage of air-conditional. Therefore, we could conclude that the passive design of this building is successful. 3rd Floor (Residence) 2nd Floor (Common Area) 1st Floor (Common Area) Ground Floor (Common Area) To outdoor (Common Area) Cross Ventilation According to MS1525, cross ventilation is the technique of using natural air movement from the outside and drawing it inside to cool buildings. Rhombus has 1 main entrance and other openings which are facing to east and west. The orientation of the building allows the wind to enter directly from the east entrance and escape through the west entrance. Therefore, the wind draught consistently brings in fresh air into the building, so that the users in the building will feel comfortable inside the building. Second Floor Plan DBT(°C) 5 10 15 20 25 30 35 40 45 50 AH 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 Comfort The photos above show the openings that allow the hot air to escape from the building Building Science 1_BLD 60803 Tutor: Ms Sujatavani Woo Wen Jian 0315123 | Benny Tan Shiowee 0315447 | Nicolas Wong Xiao En 0314377 | Yuan Khai Shien 0314818 | Lee Yaue Shen 0315381 | Preston Liew Ru Ping 0313822