space of solutions and generation of possible solutions id seminar 24-26 october steffen petersen...
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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
The complexity in building design
Energy consumptionDaylight Thermal environmentDraught
The Facade
Glass quality
Amount of insulation
Glass area
Orientation
Sun screen
No. of persons
The room
Ventilation
Heat contribution
Degasification
Room depth
Energy consumptionDaylight Thermal
environment
Air quality
Draught
The Facade
Glass quality
Amount of insulation
Glass area
Orientation
Sun screen
No. of persons
The room
Ventilation
Heatcontribution
Degasification
Room depth
The complexity in building design
The Facade
No. of person
Glass quality
Amount of insulation
The room
Energy consumptionDaylight
Ventilation
Thermalenvironment
Glass area
Air quality
Draught
Orientation
Heat contribution
Degasification
Sun screen
Room depth
The building
Constructional principle
Architecture
Logistic
Function
The complexity in building design
The Facade
No. of person
Glass quality
Amount of insulation
The room
Energy consumptionDaylight
Ventilation
Thermalenvironment
Glass area
Air quality
Draught
Orientation
Heat contribution
Degasification
Sun screen
Room depth
The building
Constructional principle
Architecture
Logistic
Function
The complexity in building design
The answer: Integrated design
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%
Step 2: Space of solutions
Reference roomGeometry
Room depth 6 mRoom widht 3 mRoom height 2,5 mWindow geometry 2,98 x 1,80 mPanel wall height 0,65 mOrientation South
ConstructionsU-value 0,2 W/(m2K)Window component Two-layer energy glass (U=1,1), standard frameSun screen NoneThermal mass Medium heavy
SystemsInternal 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), SEL=1 kJ/m3
Heat recovery 75%Cooling Mechanical cooling
Elec. light general max 6 W/m2, work lamps max 2 W/m2
An office room for 2 persons
Step 2: Space of solutions
Energy and indoor environment for reference
Thermal environmnet class A
Air quality class B
Step 2: Space of solutionsEnergy and indoor environment- Measure: External sun screen
Thermal environmnet class A
Air quality class B
Step 2: Space of solutionsEnergy and indoor environment- Measure: External sun screen
Thermal environmnet class A
Air quality class B
Step 2: Space of solutionsEnergy and indoor environment- Measure: Solar glass
Thermal environmnet class A
Air quality class B
Step 2: Space of solutions
Thermal environmnet class A
Air quality class B
Energy and indoor environment- Measure: Solar glass
Generation of possible solutions
Possible solution no. 1: Referencemodel with solar glass
- Possible window height
Generation of possible solutions
Possible solution no. 1: Referencemodel with solar glass
- Possible window height
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
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
