1. BESTFACADE, Åke Blomsterberg, 2007-11-12
WP 5: Best practice guidelines
Energy and Building Design
University of Lund
Åke Blomsterberg
BESTFACADE, Åke Blomsterberg,

2. BESTFACADE, Åke Blomsterberg, 2007-11-12
Objective
Information supporting in the design, choice, implemenation and management of energy efficient and healthy office buildings (refurbishment and new construction) with double skin facades
BESTFACADE, Åke Blomsterberg,

3. BESTFACADE, Åke Blomsterberg, 2007-11-12
Target group
Clients/developers
Decision makers
Governmental bodies
Standardization (not a target group, but referenced to)
Architects
Civil and HVAC engineers
Facility managers
Façade suppliers
BESTFACADE, Åke Blomsterberg,

4. Work since previous meeting
modified format
editing
more references
English corrections
some text deleted and some added
BESTFACADE, Åke Blomsterberg,

5. BESTFACADE, Åke Blomsterberg, 2007-11-12
Description of work
Part 1 Fundamentals
Part 2: Applications
Part 3: Tools
BESTFACADE, Åke Blomsterberg,

6. BESTFACADE, Åke Blomsterberg, 2007-11-12
Part 1: Fundamentals
Common basic scientific, technical and economic knowledge on double skin facades
BESTFACADE, Åke Blomsterberg,

7. BESTFACADE, Åke Blomsterberg, 2007-11-12
Part 1: Fundamentals
What is a glazed building
Architectural aspects
Technology
Glazing
Facade construction
Costs
BESTFACADE, Åke Blomsterberg,

8. BESTFACADE, Åke Blomsterberg, 2007-11-12
Part 2: Applications
”Detailed” practical information for design, choice, management, use and maintainance of DSF and buildings with DSF (new construction and refurbishment?)
Performance specifications
LCC
”Rules of thumb”
BESTFACADE, Åke Blomsterberg,

9. Description of work Part 2: Applications
Case studies – good and not so good examples, from WP1 and WP3
When DSF are appropriate
Impacts of DSF
BESTFACADE, Åke Blomsterberg,

10. Description of work Part 2: Applications
Energy use, daylight, indoor climate and sustainability
Potential advantages with double skin facades
Potential problems with double skin facades and how to overcome them
Performance specifications and requirements
BESTFACADE, Åke Blomsterberg,

11. Description of work Part 2: Applications
The building process
Design
Construction
Commissioning, new
Operation and maintenance, new
Costs
Case studies
Predicted performance - examples
BESTFACADE, Åke Blomsterberg,

12. Description of work Part 3: Tools
General info on simulations
Review of simulation tools
BESTFACADE, Åke Blomsterberg,

13. BESTFACADE, Åke Blomsterberg, 2007-11-12
Approval
Reynaers
FhG-IBP
MCE
ENTPE
BBRI
NKUA?
ISQ?
Dimglas?
Skanska?
IWT?
BESTFACADE, Åke Blomsterberg,

14. BESTFACADE, Åke Blomsterberg, 2007-11-12
Building:
Kista Science Tower, Kista (Stockholm)
Year of construction:
Size:
32 storeys, m² double skin façade, floor area 700 m²/storey i.e. appr m²
Use:
Office non-public, cell-type or open-plan office
Motive:
Image, commercial property development project, fully glazed façade to give a feeling of volume
Principle of façade construction:
Two of the three facades are double skin facades, the third (to the north-east) is a single skin facade. The double skin facades are of the corridor façade type with diagonal ventilation. In the cavity there are gangways on each floor and automatically controlled (2.7 m sections) perforated Venetian blind. The windows are non-openable.
Façade construction, material:
Prefabricate one-storey high aluminium construction
Outer skin: 8/10 mm H, non-coloured
Inner skin: double-pane sealed glazing units with LE glass, non-coloured, 1.35 m on centre
HVAC:
Balanced ventilation with heat recovery, indoor design temperature in winter 22 ± 1,5 ºC, in summer 24 ºC at design outdoor temperature + 26 ºC. Cooling from active cooling beams 2.7 m on centre. Cooling energy source is district cooling. Heating provided by radiators. Heating energy source is district heating.
Light:
No daylight control system, HF fluorescent lighting
Fire:
Every fourth storey is fire sectioned. The office areas are equipped with a sprinkler system.
Energy use: 2004
Electricity 93 kWh/m²year, heating 111 kWh/m²year, cooling 42 kWh/m²year i.e. total energy use 246 kWh/m²year
Lessons learnt
After construction internal Venetian blinds had to be installed on the north-eastern façade, to control daylight and solar gains.
BESTFACADE, Åke Blomsterberg,