Department of Building Construction, Faculty of Civil Engineering Jan Tywoniak group for building physics and sustainable building EnerBuild RTD workshop, Prague
t thermal performance of buildings overall sustainability related to buildings
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.
Sustainability - agenda thermal performance in environmental con-text LC design principles and assessments
Legislation Tools - developed or supported Translation Agenda 21 on Sust.Construction CIB-report Czech standard CSN Thermal protection - Requirements Analysis for up-grade of Energy- Managent Act + government. 291/ studies for Guidelines for Sustainable Building (starting point)
potřeba tepla na vytápění kWh/(m 2 a)
vlastnosti konstrukcí
new CZ standard U-Value building envelope limittarget low-energy wall leight weight0,30 0,200,15 massive 0,38* 0,25 roof leight weight 0,24 0,160,12 massive0,30 0,20 window new1,80 + 1,200,8 refurbished 2,00 1,35 * simple wall: 0,46 ( ) + 2,0 ( )
0 0,2 1,0 A/V E [kWh/(m 2 a)]80 145
Czech house Malmö
závěry
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/(m 2 year), B – all new buildings (1 %) in passive-house standard (15 kWh/(m 2 year), C – all new buildings (1 %) in low-energy standard + all refurbishments (3 %) with 70 kWh/(m 2 year), D - all new buildings (1 %) with 30 kWh/(m 2 year) + all refurbishments (3 %) with 50 kWh/(m 2 year)
Dům WEGER
Dům MINERAL
36,4 kWh/(m 2 a)
22,4 kWh/(m 2 a)
původní 144 MWh/r obvyklá rekonstrukce 75 MWh/r lepší úroveň + vynikající nástavba cca.45 MWh/r špičkové řešení cca.30 MWh/r
energy distributiondemand reduction
roofing
%
kotevní prvky a