BUILDING SIENCE 2 [BLD 61303 / ARC 3413]
PROJECT 2: INTEGRATION
NAME: Muhammad Nabeel Ali Joomun ID: 0320583 TUTOR: Mr. Sivaraman Kuppusamy
SPACE A- COMMUNITY SPACE
Daylight calculation Daylight factor (MS1525)
Zone Very bright
Daylight factor (%) >6
Bright Average Dark
3-6 1-3 0-1
Distribution Too bright with thermal and glare problem Good Fair Poor
Required daylight factor for the community space = 4% External illumination in Malaysia= 18000 lm
Daylight factor=
Internal illuminanc e 100 External illuminanc e 4=
Internal illuminanc e 18000
100
Therefore, required internal illuminance = 720 lux
Area of space
45.1 m2
Area of openings
36 m2
Exposed façade and skylight area to floor area ratio, Daylight factor =(
=(
Area of openings Area of space
36 100 45.1
) x 0.1
100
) x 0.1
= 7.9%
Daylight factor=
7.9 =
Internal illumnianc e ď‚´ 100 External illuminanc e
Internal illumnianc e 18000
ď‚´ 100
Internal illuminance = 1422 lm
Artificial light calculation Light fixture type
Recessed LED luminaire
PowerBalance gen2, RC461B G2 LED34S
Company
Philips
Dimension
0.6m x 0.6m
Luminous flux (lm)
3400
Input power
25 W
Light source colour
840 neutral white
Area of space
45.1 m2
Reflection coefficient
Ceiling:0.8 Wall:0.5
Mounting height
2.65m
Working plane height = 0.65m
Mounting height of light fixture= 3.3m Mounted height above working plane, Hm = 2.65 Room index =
7.3 x 6.1 2.65 x (7.3  6.1)
= 1.25
Reflectance for ceiling, wall and working plane = 0.8, 0.5 and 0.1 Utilization factor= 0.52
Area of space= 44.53 m2 Luminous flux of light fixtures = 3400 lux
Number of light fixtures needed =
E xA F x UF x MF
=
300 x 7.3 x 6.1 3400 x 0.52 x 0.8
=9.4 Therefore, number of lights= 10
Maximum spacing between lights = 1.5 x Hm = 1.5 x 2.65 = 3.97 m
Light position and PSALI
The luminaires are positioned as shown. They are distributed along the ceiling, equally, so as to provide enough light to the space. The distance between each luminaire (in row) is 2m. The distance between each luminaire (in column) is 1.2m. The luminaires in blues are turned on permanently because, during the day, the daylight is not sufficient at this area. This allows the illumination to reach 300 lm as required by IES standards.
SPACE B- NEWSPAPER AND MAGAZINE SPACE
Daylight calculation Daylight factor (MS1525)
Zone Very bright
Daylight factor (%) >6
Bright Average Dark
3-6 1-3 0-1
Required daylight factor for the community space = 4% External illumination in Malaysia= 18000 lm
Daylight factor=
Internal illuminanc e 100 External illuminanc e
4=
Internal illuminanc e 18000
100
Therefore, required internal illuminance = 720 lux
Distribution Too bright with thermal and glare problem Good Fair Poor
Area of space
37 m2
Area of openings
20 m2
Exposed façade and skylight area to floor area ratio, Daylight factor =(
=(
Area of openings Area of space
20 37
) x 0.1
100
) x 0.1
100
= 5.4% Daylight factor=
5.4=
Internal illumnianc e 100 External illuminanc e
Internal illumnianc e 18000
100
Internal illuminance = 972 lm
Artificial light calculation Light fixture type
Recessed LED luminaire
PowerBalance gen2, RC461B G2 LED34S
Company
Philips
Dimension
0.6m x 0.6m
Luminous flux (lm)
3400
Input power
25 W
Light source colour
840 neutral white
Area of space
37 m2
Reflection coefficient
Ceiling:0.8 Wall:0.5
Mounting height
2.6m
Working plane height = 0.70m Mounting height of light fixture, Hm = 3.3m Mounted height above working plane, Hm = 2.6m
Room index =
6.6 x 5.3 2.6 x (6.6  5.3)
= 1.13
Reflectance for ceiling, wall and working plane = 0.8, 0.5 and 0.1 Utilization factor= 0.50
Area of space= 34.98 m2 Luminous flux of light fixtures = 3400 lux
Number of light fixtures needed =
E xA F x UF x MF
=
300 x 34.98 3400 x 0.50 x 0.8
=7.7 Therefore, number of lights= 8
Maximum spacing between lights = 1.5 x Hm = 1.5 x 2.60 = 3.9 m
Light position and PSALI
The luminaires are positioned as shown. They are distributed along the ceiling, equally, so as to provide enough light to the space. The distance between each luminaire (in row) is 2.67m. The distance between each luminaire (in column) is 1.66m. The luminaires in blues are turned on permanently because, during the day, the daylight is not sufficient at this area. This allows the illumination to reach 300 lm as required by IES standards.
References:
-
Philips.(n.d). PowerBalance gen2 recessed LED light. Retrieved from http://www.lighting.philips.com/main/prof/indoor-luminaires/recessed/powerbalancegen2/910502002903_EU/product
-
Malaysian Standard.(2007). MS1525: Code of practice on energy efficiency and use of renewable energy for non-residential buildings. First revision.
-
Pioneer lighting. (n.d). Room illumination level. Retrieved from http://www.pioneerlighting.com/new/pdfs/IESLuxLevel.pdf