7/31/2019 Exercise2 Presentation

1/14

7/31/2019 Exercise2 Presentation

2/14

Office building in Singapore

North-west

170m

85m

Max plot ratio = 13

7/31/2019 Exercise2 Presentation

3/14

Process overview

1st test

- 3 parameters

- 24 variations

- parameter effects

Best 4: 2nd test

- 1 new parameter

- 4 variations

Worst 2

- further analysis

7/31/2019 Exercise2 Presentation

4/14

Parameters

Rotation

Shade width

Arrangement shape, blocks

7/31/2019 Exercise2 Presentation

5/14

Tested variations table

VariationArrangement Angle Shade Width

Area per unit

floor /m2Total Area /m2 Plot Ratio

Geometry No. of Blocks No. of Floors Rotated /deg Shade width /m

1

Square

1 25

0 2

3358.00 83950.00 5.82 4

35

2

4 4

5

7 15

02

561.20 58926.00 4.16 4

75

2

8 4

9

17 10

0 2

196.86 33465.69 2.310 4

115

2

12 4

13

Rectangle

1 25

02

3131.33 78283.25 5.414 4

154

2

16 4

17

7 15

0 2

515.87 54165.93 3.718 4

193

2

20 4

21

12 12

02

292.56 42128.64 2.922 4

234

2

24 4

7/31/2019 Exercise2 Presentation

6/14

Variations

1,2

3,4

13,14

15,16

9,10

11,12

21,22

23,24

1,2

3,4

13,14

15,16

7/31/2019 Exercise2 Presentation

7/14Results

Variation GeometryNo. of

Blocks

No. of

Floors

Rotated

/deg

Shade width

/mCooling Electricity Total

1

Square

1 25

02 71 3 74

2 4 56 4 60

3 5 2 80 4 84

4 4 72 5 76

5

7 15

02 102 4 105

6 4 84 6 90

75

2 132 4 136

8 4 111 6 117

9

17 10

02 127 4 131

10 4 109 11 12011

52 167 4 171

12 4 138 8 145

13

Rectangle

1 25

02 95 2 97

14 4 75 3 78

154

2 133 2 135

16 4 123 3 126

17

7 15

02 113 3 116

18 4 96 7 103

193

2 152 4 156

20 4 132 6 138

21

12 12

02 119 4 123

22 4 102 9 110

234

2 158 4 162

24 4 133 7 140

7/31/2019 Exercise2 Presentation

8/14Analysis of arrangement

12 3

4

1314

1516

5

6

7

8

17

18

19

20

9

10

11

12

21

22

23

24

0

2

4

6

8

10

12

0 20 40 60 80 100 120 140 160 180

Electricityin

kWh/m2/yr

Cooling Energy in kWh/m2/yr

1 Block 7 Blocks 10+ Blocks

7/31/2019 Exercise2 Presentation

9/14

0

2

4

6

8

10

12

0 20 40 60 80 100 120 140 160 180

Electricityin

kWh/m2/yr

Cooling Energy in kWh/m2/yr

shade width = 2 shade width = 4

Analysis of shade width

7/31/2019 Exercise2 Presentation

10/14Analysis of rotation

0

2

4

6

8

10

12

0 20 40 60 80 100 120 140 160 180

Electricityin

kWh/m2/yr

Cooling Energy in kWh/m2/yr

Rotated Not Rotated

7/31/2019 Exercise2 Presentation

11/14New parameter shade position

7/31/2019 Exercise2 Presentation

12/14Variations tested

Variation Geometry No. of Blocks No. of Floors Rotated /degShade width

/mCooling Electricity Total

aSquare

1 25

0

4

60 4 64

b 5 78 5 82

cRectangle

0 79 3 82

d 4 127 3 130

a

b

c d

0

2

4

6

8

10

12

0 20 40 60 80 100 120 140 160 180

ElectricityinkWh/m2/yr

Cooling Energy in kWh/m2/yr

1st Test 2nd Test

7/31/2019 Exercise2 Presentation

13/14Variation 10 & 12 from 1st test

Rotation Variationcentre border

Cooling Electricity Cooling Electricity

0 10 54 9 55 2

5 12 67 45 71 2

54 55

67 71

92

45

2

0

20

40

60

80

100

120

centre_0 border_0 centre_5 border_5

Cool ing Electric ity

7/31/2019 Exercise2 Presentation

14/14Parameters summary

-Multiple blocks block off light to the middle zone

-Rotation does not help bring in more light to a multi-block design

-Shade width has a trade-off between cooling energy consumption and daylighting