Department of Building Construction, Faculty of Civil Engineering

1. Department of Building Construction, Faculty of Civil Engineering EnerBuild RTD workshop, Prague 27.01.2003 Jan Tywoniakgroup for building physics and sustainable building

2. t • thermal performance of buildings • overall sustainability related to buildings

3. Thermal performance • low-energy buildings (design, analysis) • studies of real-quality (irregularities, air-tightness, etc.) • moisture in building envelope • radon distribution phenomena, design rules • etc.

4. Sustainability - agenda • thermal performance in environmental con-text • LC design principles and assessments

5. Legislation Tools - developed or supported • Translation Agenda 21 on Sust.Construction CIB-report • Czech standard CSN 730540-2 Thermal protection - Requirements • Analysis for up-grade of Energy-Managent Act + government. 291/2001... • studies for Guidelines for Sustainable Building (starting point)

6. - 0 15 50 100 200 .... potřeba tepla na vytápění kWh/(m2a)

7. vlastnosti konstrukcí

8. new CZ standard U-Value building envelope limit target low-energy • wall leight weight 0,30 0,20 0,15 massive 0,38* 0,25 • roof leight weight 0,24 0,16 0,12 massive 0,30 0,20 • window new 1,80+ 1,20 0,8 • refurbished 2,00 1,35 • * simple wall: 0,46 (31.12.2004) • + 2,0 (31.12.2003)

9. 145 80 E [kWh/(m2a)] 0 0,2 1,0 A/V

10. Czech house Malmö

11. závěry

12. Figure 1Optimistic prognosis of energy use for heating in general - simple parametric study (A – all new buildings (1 % per year) in low-energy standard (50 kWh/(m2year), B – all new buildings (1 %) in passive-house standard (15 kWh/(m2year), C – all new buildings (1 %) in low-energy standard + all refurbishments (3 %) with 70 kWh/(m2year), D - all new buildings (1 %) with 30 kWh/(m2year) + all refurbishments (3 %) with 50 kWh/(m2year)

13. Figure 1Optimistic prognosis of energy use for heating in general - simple parametric study (A – all new buildings (1 % per year) in low-energy standard (50 kWh/(m2year), B – all new buildings (1 %) in passive-house standard (15 kWh/(m2year), C – all new buildings (1 %) in low-energy standard + all refurbishments (3 %) with 70 kWh/(m2year), D - all new buildings (1 %) with 30 kWh/(m2year) + all refurbishments (3 %) with 50 kWh/(m2year)

14. Figure 1Optimistic prognosis of energy use for heating in general - simple parametric study (A – all new buildings (1 % per year) in low-energy standard (50 kWh/(m2year), B – all new buildings (1 %) in passive-house standard (15 kWh/(m2year), C – all new buildings (1 %) in low-energy standard + all refurbishments (3 %) with 70 kWh/(m2year), D - all new buildings (1 %) with 30 kWh/(m2year) + all refurbishments (3 %) with 50 kWh/(m2year)

15. Figure 1Optimistic prognosis of energy use for heating in general - simple parametric study (A – all new buildings (1 % per year) in low-energy standard (50 kWh/(m2year), B – all new buildings (1 %) in passive-house standard (15 kWh/(m2year), C – all new buildings (1 %) in low-energy standard + all refurbishments (3 %) with 70 kWh/(m2year), D - all new buildings (1 %) with 30 kWh/(m2year) + all refurbishments (3 %) with 50 kWh/(m2year)

16. Dům WEGER

18. Dům MINERAL

22. 36,4 kWh/(m2a)

23. 22,4 kWh/(m2a)

24. původní 144 MWh/r • obvyklá rekonstrukce 75 MWh/r • lepší úroveň + vynikající nástavba cca. 45 MWh/r • špičkové řešení cca. 30 MWh/r

25. energy distribution demand reduction

27. roofing

28. + 50 ..... + 100 %

31. kotevní prvky a

32. www.substance.cz tywoniak@fsv.cvut.cz