1. Energy Environment & Sustainable Development Thematic Network on Energy in the Built Environment Thematic group 5 : Building Components (including windows and facades) EnerBuild meeting Brussels – May 14 2001

2. Energy Environment & Sustainable Development Thematic Network on Energy in the Built Environment Group 5 Projects Solar Power Envelope S.O. Jensen, DTI, Denmark Durable peak performance evacuated glazing D. Infield, University of Ulster, UK Dynamic building energy performance assessment A.D. Irving, Rutherford Appleton Laboratory, UK Study and evaluation of integrated solar façade D. Infield, Loughborough University, UK Insulating, light transmitting aerogel glazing K. Jensen, DTU, Denmark

3. Energy Environment & Sustainable Development Thematic Network on Energy in the Built Environment Group 5 Projects Materials for healthy indoor spaces - MATHIS E.O. de Fernandes, Universidade do Porto, Portugal Solar building facades M. Koehl - W. Krause, FHG-ISE, Germany Design study of thermal diode wall P. Kew, Heriot-Watt University, UK Design of multi-functional ventilated façade A. Oliva - C. Miquel, Universiat de politicnica de Catalunya, Spain Façade-roof integrated PV (Solar-Collect) G. Rockendorf, Inst. Solarenergie Forschung, Germany

4. Building Thermal comfort in winter ENERGY In the seventies and eighties…

5. Building Thermal comfort in winter and summer ENERGY

6. Building Thermal Comfort Acoustic Comfort Air quality Visual Comfort INSTALLATIONS ENERGY USERS Integration

7. Energy Environment & Sustainable Development Thematic Network on Energy in the Built Environment Daylight Artificial lighting New building materials Design strategies for optimum Daylight New lighting technology New light control technology Technology Impressive new opportunities with respect to indoor climate and energy efficiency Architecture Lighting and facades…

8. Energy Environment & Sustainable Development Thematic Network on Energy in the Built Environment Climate facade Building design Installations Cooling

9. Energy Environment & Sustainable Development Thematic Network on Energy in the Built Environment The future… Information is crucial Integration is not evident  guidance needed! Architects, building owners, SME’s… 6 th framework programme : Information society  large budgets What are the needs and opportunities?

10. Energy Environment & Sustainable Development Thematic Network on Energy in the Built Environment Market… Example : high efficient heat exchangers What : Efficiencies up to 90…95% Belgium : Almost not available Netherlands : Balanced ventilation represents 20% of ventilation systems in dwellings 90% have : –such high efficient heat exchangers –DC fans

11. Energy Environment & Sustainable Development Thematic Network on Energy in the Built Environment Conclusions During the last decade, the developments in window and façade components has been spectacular. During the last decade, there has been a fundamental shift in the boundary conditions for assessing the performances of windows, facades and other components of the building envelope. In essence, an integrated evaluation of the performances in relation to the indoor climate (thermal comfort in winter and summer, indoor air quality, visual comfort, acoustical performances) and the energy efficiency (heating, cooling, lighting, ventilation, auxiliary equipment) becomes the reference.

12. Energy Environment & Sustainable Development Thematic Network on Energy in the Built Environment Conclusions Whereas in the past, the envelope components were building parts which separated the interior from the outside, they become more and more technological elements which allow an optimal interaction between the inside and the external environment and which more are optimised in close relation with the design of HVAC and lighting systems. As a result, the performance assessment is becoming more complex.

13. Energy Environment & Sustainable Development Thematic Network on Energy in the Built Environment Conclusions The increased complexity for a correct performance assessment in relation to indoor climate and energy efficiency increases the need for support by appropriate standards and regulations. In particular, integrated energy performance standards and regulations applicable for new buildings and retrofitting and including assessment procedures for handling innovative technologies is a major challenge, whereby a European common basis is desirable. This clearly is in line with the proposed European Directive on ‘energy performance of buildings’ Brussels workshop as part of several workshops

14. 2001 2002 2003 T1 : calculation procedures T2 : Innovative concepts T3 : Legislation T4 : Applicability existing build. T5 : Impact on market T6 : Building model code T7 : Website Meetings T8 : Seminars SAVE-ENPER project