Space of solutions and generation of possible solutions

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Space of solutions and generation of possible
solutions

• ID seminar 24-26 October
• Steffen Petersen
• PhD-student
• BYG.DTU and Birch Krogboe

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The complexity in building design
Energy consumption
Daylight
Thermal environment
Draught
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The complexity in building design
Air quality
Energy consumption
Daylight
Thermal environment
Draught
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The complexity in building design
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The complexity in building design
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The answer Integrated design
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Step 1 Establishing design goals

• An office building for 300 persons
• Energy consumption and CEN 15251 (indoor env.)
• Energy LE1 LE2 Frame
• Thermal environment Kl. I Kl. II Kl. III
• Air quality Kl. I Kl. II Kl. III
• Daylight 4 3 2 1

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Step 2 Space of solutions
An office room for 2 persons
Reference room
Geometry Room depth 6 m Room widht 3 m Room
height 2,5 m Window geometry 2,98 x 1,80
m Panel wall height 0,65 m Orientation South C
onstructions U-value 0,2 W/(m2K) Window
component Two-layer energy glass (U1,1),
standard frame Sun screen None Thermal
mass Medium heavy Systems Internal load 300W
(2 persons v/ laptops) Infiltration 0,2 h-1 (or
approx. 0,13 l/s m2 - max jf. the building
code) Ventilation Mechanical ventilation class
B (ca. 2 h-1), SEL1 kJ/m3 Heat
recovery 75 Cooling Mechanical cooling
Elec. light general max 6 W/m2, work lamps max
2 W/m2
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Step 2 Space of solutions
Energy and indoor environment for reference
Thermal environmnet class A Air quality class B
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Step 2 Space of solutions
Energy and indoor environment - Measure External
sun screen
Thermal environmnet class A Air quality class B
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Step 2 Space of solutions
Energy and indoor environment - Measure External
sun screen
Thermal environmnet class A Air quality class B
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Step 2 Space of solutions
Energy and indoor environment - Measure Solar
glass
Thermal environmnet class A Air quality class B
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Step 2 Space of solutions
Energy and indoor environment - Measure Solar
glass
Thermal environmnet class A Air quality class B
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Generation of possible solutions
Possible solution no. 1 Referencemodel with
solar glass - Possible window height
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Generation of possible solutions
Possible solution no. 1 Referencemodel with
solar glass - Possible window height
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Generation of possible solutions
Possible solution no. 1 Solar glass

• Conditions
• The spatial geometry, constructions and systems
  of the reference
• No external sun screen
• Solar glass
• Result
• Window height between 1,44 and 2,2 m
• Compliance with performance demands

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Generation of possible solutions
Possible solution no. 2 External sun screen

• Conditions
• The spatial geometry, constructions and systems
  of the reference
• External, dynamic sun screen (louvers)
• Result
• Window height between 1,2 and 2,5 m
• Compliance with performance demands

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