bscience 2 project 2

Building Science 2 (BLD 61303 / ARC 3413)

Project 2: Integration Project

NAME: Lai Chi Mun ID: 0319463 TUTOR: Mr. Siva

WAS HROOM

GALLERY

STORAGE / M&E

CAFETERI A

DI SCUSSI ON ROOM

DI SCUSSI ON ROOM

DI SCUSSI ON ROOM

DI SCUSSI ON ROOM

FI RS TFLOORPLAN 1 : 1 5 0

FLOORPLAN

PARK

STUDY AREA

STUDY AREA

STUDY AREA

STUDY AREA

RECEPTI ON

GROUNDFLOORPLAN 1 : 1 5 0

WAS HROOM

STORAGE / M&E

VI EWI NGDECK

THI RDFLOORPLAN 1 : 1 5 0

S TORAGE MULTI MEDI AROOM

S TUDYAREA

S TUDYAREA

STUDY AREA

S TUDYAREA

S TUDYAREA

S ECONDFLOORPLAN 1 : 1 5 0

2.0 Space 2: Multimedia Room 2.1 Daylight According to MS 1525, Day lighting Factor distribution is as below: Daylight Factor, DF Daylight Factor/% Distribution Zone Very Bright >6 Very large with thermal and glare problems Bright 3-6 Good Average 1-3 Fair Dark 0-1 Poor The area selected which is the multimedia room faces south west and is located at the second floor of the building. This space is also covered by faรงade of louvered shutter window panels, which allows daylight into the space and also visual connectivity with the pedestrians passing by. The panels can be operated manually by the users when sun shading is needed and can control the amount of penetration of sunlight.

Daylight Factor Calculation Floor Area/m2

9.0 x 5.5 =49.5 Area of façade exposed to 8.0 x 2.3 sunlight/m2 =18.4 Area of skylight 0 Exposed façade & Skylight Area to (18.4+0)/49.5 Floor Area ratio/Daylight Factor, DF =0.37 37% x 0.1 =3.7% Natural Illumination Calculation Illuminance/lux 120 000 110 000 20 000 1000 – 2000 400 <200 40 <1 Eexternal = 18500 lux DF= Ei / Ex x 100% = 3.7 x 18500/100 = 684.5 lux

Section

Example Very Bright Sunlight Bright Sunlight Clear Sky Overcast day Sunrise/Sunset on clear day Midday Fully overcast Sunset, Storm cloud

Daylighting Contour

Conclusion The discussion room has a daylight factor of 3.7% and natural illumination of 684.5 lux. Based on requirements of MS1525, the space has good daylight distribution as the value is in between 3-6%. However, the illuminance value is higher than the required value of 300lux. This can cause thermal and glare problems, which leads to the discomfort of users. Addition of a layer of green faรงade panel is proposed to minimize the penetration of ultraviolet and infrared rays into the interior spaces. This is further aided by faรงade design of louvered shutter window panels, which can be manually operated by the users to solve glare and thermal problems. The window panels are rotatable to adjust the angle of the panel according to the position of sunlight.

2.2 Artificial Lighting According to MS 1525, the recommended illumination level for discussion space is 300-500 lux.

Lumen Method Calculation Type Model

LED Architectural Recessed Light Columbia LSTE

Lumen/lm Watt Color Temperature/K Color Designation

3625 40 4000 Warm White

Dimension of room/L x W Floor Area/A Lumen/lux Height of ceiling/m Heigh of luminaire/m Height of work level/m Mounting Height/Hm Reflection Factors

9.0 x 5.5 49.5 3625 3.4 3.4 1.0 3.2 Ceiling: 0.7 Wall: 0.5 Floor: 0.2 9.0 x 5.5/3.2 x (9.0+5.5) =1.07 0.48 0.8 N= (300 x 49.5)/[3625 x (0.48 x 0.8)] = 10.7 = 11 lights SHR= 1/3 x â&#x2C6;&#x161;(49.5/11) = 0.71 SHR= S/3= 0.71 S= 2.13 Fittings required along 5.5m wall= 5.5/2.13 = 2.6 = 3 rows

Room Index/RI(K) Utilisation Factor/UF Maintenance Factor/MF Number of Lamp Required/N

Spacing to Height Ratio/SHR

Fitting layout

Number of lamps in each row = 11/3

= 3.7 = 4 lamps Spacing along 9.0m wall = 9/4 = 2.25m

Fitting Layout/Reflected Ceiling Plan

Conclusion 11 LED recessed lights are used to illuminate the multimedia room to achieve the minimum illuminance of 300 lux stated by MS 1525.With sufficient illuminance, users are able to use the space in a comfortable environment.

2.3 Permanent Supplementary Artificial Lighting of Interior (PSALI) Referring to the daylight values obtained above, the multimedia room has a good distribution of daylight whereby its daylight factor of 3.7%. The light contour diagram also shows that the space receives higher day lighting during the day from the faรงade compared to discussion area. The artificial lightings calculation also shows a result of the usage of 11 LED recessed lights to illuminate the area. Hence, PSALI is applied whereby the lightings are controlled with 2 switches.

One for the first row near the opening in the south whereby it can be switched off when there is sufficient day light and another one for the successive two rows at the back.

Lighting 1.0 Space 1: Discussion Room 1.1 Daylight According to MS 1525, Day lighting Factor distribution is as below: Daylight Factor, DF Zone Very Bright

Daylight Factor/%

Distribution

>6

Bright Average Dark

3-6 1-3 0-1

Very large with thermal and glare problems Good Fair Poor

The area selected which is the discussion room faces north east and is located at the first floor of the building. This space is covered by faรงade pf louvered shutter window panels, which allows daylight into the space and also visual connectivity with the pedestrians passing by. The panels can be operated manually by the users when sun shading is needed and can control the amount of penetration of sunlight.

Daylight Factor Calculation Floor Area/m2 Area of façade exposed to sunlight/m2 Area of skylight Exposed façade & Skylight Area to Floor Area ratio/Daylight Factor, DF

5.5 x 6.0 =33.0 6.0 x 2.0 =12.0 0 (12+0)/33 =0.36 36% x 0.1 =3.6%

Natural Illumination Calculation Illuminance/lux 120 000 110 000 20 000 1000 – 2000 400 <200 40 <1 Eexternal = 18500 lux DF= Ei / Ex x 100% = 3.6 x 18500/100 = 666 lux

Section

Example Very Bright Sunlight Bright Sunlight Clear Sky Overcast day Sunrise/Sunset on clear day Midday Fully overcast Sunset, Storm cloud

Daylighting Contour

Conclusion The discussion room has a daylight factor of 3.6% and natural illumination of 666 lux. Based on requirements of MS1525, the space has good daylight distribution as the value is in between 36%. However, the illuminance value is higher than the required value of 300lux. This can cause thermal and glare problems, which leads to the discomfort of users. Addition of a layer of low-e coatings of glass panels are proposed to minimize the penetration of ultraviolet and infrared rays into the interior spaces. This is further aided by faรงade design of louvered shutter window panels, which can be manually operated by the users to solve glare and thermal problems.

1.2 Artificial Lighting According to MS 1525, the recommended illumination level for discussion space is 300-500 lux.

Lumen Method Calculation Type Model

LED linear Phillip FluxStream

Lumen/lm Watt Color Temperature/K Color Designation

3100 29 3500 Warm white

Dimension of room/L x W Floor Area/A Lumen/lux Height of ceiling/m Heigh of luminaire/m Height of work level/m Mounting Height/Hm Reflection Factors

5.5 x 6.0 33 3100 3 3 1 2.8 Ceiling: 0.7 Wall: 0.5 Floor: 0.2 5.5 x 6.0/2.8 x (5.5+6.0) =1.02 0.48 0.8 N= (300 x 33)/[3100 x (0.48 x 0.8)] = 8.3 = 9 lights SHR= 1/3 x â&#x2C6;&#x161;(33/9) = 0.64 SHR= S/3= 0.64 S= 1.92 Fittings required along 5.5m wall= 5.5/1.92 = 2.9 = 3 rows

Room Index/RI(K) Utilisation Factor/UF Maintenance Factor/MF Number of Lamp Required/N

Spacing to Height Ratio/SHR

Fitting layout

Number of lamps in each row = 9/3 = 3 lamps Spacing along 6.0m wall = 6/3 = 2m

Fitting Layout/Reflected Ceiling Plan

Conclusion 9 LED linear lamps are used to illuminate the quiet reading area to achieve the minimum illuminance of 300 lux stated by MS 1525.With sufficient illuminance, users are able to perform tasks more efficiently and accurately.

1.3 Permanent Supplementary Artificial Lighting of Interior (PSALI) Referring to the daylight values obtained above, the quiet reading area has a good daylight factor of 3.6%. The light contour diagram also shows that the space receives sufficient day lighting during the day from the faรงade. The artificial lightings calculation also shows a result of the usage of 9 LED linear lamps to illuminate the discussion room. Hence, PSALI is applied whereby the lightings are controlled with 3 switches. One for the first row near the opening whereby it can be switched off when there is sufficient day light, one for the successive row in the middle and finally, the last one for the last row in the area.

PSALI Fitting Layout