Thematic group 5 :

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EnerBuild workshop Lyon 24 October 2002

• Thematic group 5
• Building Components
• (including windows and facades)
• Peter Wouters
• Belgian Building Research Institute

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Research in the seventies till beginning of
eighties Energy use for heating in dwellings
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• Thermal comfort in winter
• Heating energy
• Thermal insulation

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Very important for designing and assessing
(innovative)building envelopes
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Glazing

• Low heat losses
• Control of solar gains
• useful in winter
• not desirable in summer
• Contact with outside
• Minimisation of artificial lighting
• No glare problems
• ...

• Acoustics
• Additional concerns
• Pre-heating ventilation air
• Maintenance
• Fire regulations
• esthetics
• ...
• Costs

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The availability of energy efficient technology
is essential for improving the performances of
the building stock...
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Innovative glazing systems
Evacuated glazing Aerogel glazing
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Also attention for source control
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Natural andartificiallighting
Crucial aspect in design concept
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Understanding control of innovative systems..
Intelligent control very important!
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In order to achieve quality,it is not
sufficient to have good technologyArchitecture
is also crucial...
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Projects

• Solar Power Envelope
• Durable peak performance evacuated glazing
• Dynamic building energy performance assessment
• Study and evaluation of integrated solar façade
• Insulating, light transmitting aerogel glazing
• Materials for healthy indoor spaces - MATHIS
• Solar building facades
• Design study of thermal diode wall
• Design of multi-functional ventilated façade
• Façade-roof integrated PV (Solar-Collect)

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Projects

• Solar Power Envelope
• Durable peak performance evacuated glazing
• Dynamic building energy performance assessment
• Study and evaluation of integrated solar façade
• Insulating, light transmitting aerogel glazing
• Materials for healthy indoor spaces - MATHIS
• Solar building facades
• Design study of thermal diode wall
• Design of multi-functional ventilated façade
• Façade-roof integrated PV (Solar-Collect)

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A very important observation

• For many technological areas, a wide offer of
  energy efficient technology at competitive prices
  exist but limited use by market
• Creating appropriate market conditions probably
  in many areas more important than developing new
  technologies

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European Directives
Construction Product Directive (1989)
Directive on Energy Performance (2002?)
CEN (common products)
EOTA (innovative products)
Member states
Obligation to impose Energy Performance
Regulation, energy certification and inspections
Obligation to express performances in line with
CEN and EOTA procedures
Intensive, but fragmented national research
activities which result in heterogenous market
conditions
Research at national level for developing
procedures
No incentive for industry for product optimisation
Missing procedures
Not sufficiently refined procedures
Almost no common procedures at European level
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Conclusions

• Major developments during 2 last decades
• With respect to the needs
• Impressive development in technology
• Integrated approach far from evident
• Indoor climate
• Energy use at micro- and macro-scale
• Major challenge
• Create appropriate assessment tools (including
  requirements and implementation of legislation)
• A correct implementation of the EPD
• An attractive framework for stimulating innovation