Performance and potential of thermal insulating shutters

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Presentation transcript:

Performance and potential of thermal insulating shutters Roman PARATSCHA Sustainable Constructions Depatment of Civil Engineering and Natural Hazards, University of Natural Ressources and Life Sciences, Vienna, roman.paratscha@boku.ac.at

Multifunctionality of insulating shutters Basic properties of a window: Thermal insulation Shading and lightcontrol Fire protection Air and water tightness Acoustic protection

Multifunctionality of insulating shutters Special functions of a window: Fall protection Energy production Burglary protection Natural hazard protection Ecology

Shading and thermal gains Additional insulation Solar gains Shading

Construction

Thermal insulation U-value according to ÖNORM EN ISO 10077-1/2 Window + insulating shutter with EPS – insulation board

Thermal insulation U-value according to ÖNORM EN ISO 10077-1/2 Window + insulating shutter with vacuum – insulation board Quelle: Roman Paratscha

Thermal simulation 2D thermal bridge simulation with AnTherm® (EN ISO 10077) Uw = 1,1 W/m²K Ueff = 0,5 W/m²K

Thermal simulation Dynamic simulation with TRNSYS and semi-synthetic reference year (PV-GIS + METEONORM) according to ÖNORM EN ISO 13790 und ÖNORM EN ISO 10077 Type of inner Window: • Historical window (Uw=3,0 W/m²K, g=0,76) • Conventional window (Uw=1,1 W/m²K, g=0,60) • Passive-house window (Uw=0,8 W/m²K, g=0,51) Types of climate zones: • Eastern Austria (Vienna, 220 m) • Western Austria (Innsbruck, 574 m) • Alpine (Heiligenblut am Großglockner, 1302 m) Types of insulating shutters: • Panel material (Up=0,16 W/m²K) • Frame material (Uf=2,5 W/m²K) summer winter • average daily temperature of < 10 °C = night closure from sunset to 07:00 + open position winter • average daily temperature of > 10 °C = no night closure + open position summer

Simulation results Simulation boundaries Day with the highest heating demand (15 January) Day with the highest cooling demand (22 July) 20% of window area on the facade Type of inner Window: • Conventional window (Uw=1,1 W/m²K, g=0,60) Type of climate zone: • Eastern Austria (Vienna, 220 m) Type of insulating shutter: • Panel material (Up=0,16 W/m²K) • Frame material (Uf=2,5 W/m²K) Orientation • South

Simulation results Reduction of heating and cooling demand in different climates Simulation boundaries Type of inner Window: • Conventional window (Uw=1,1 W/m²K, g=0,60) Type of insulating shutter: • Panel material (Up=0,16 W/m²K) • Frame material (Uf=2,5 W/m²K) Orientation • South

Simulation results INSULATING SHUTTER VS. PASSIVE-HOUSE WINDOW: Simulation boundaries Type of inner Window: • Conventional window (Uw=1,1 W/m²K, g=0,60) • Passive-house window (Uw=0,8 W/m²K, g=0,51) Type of insulating shutter: • Panel material (Up=0,16 W/m²K) • Frame material (Uf=2,5 W/m²K) Orientation • South Type of climate zone: • Eastern Austria (Vienna, 220 m)

Simulation results INSULATING SHUTTER VS. PASSIVE-HOUSE WINDOW:

Conclusion Depending on the quality of the inner window, an improvement of the U-value between 50 % and 80 % can be achieved. It can be said that an apartment with insulating shutter combination in Vienna is always accounting better for around 10 kWh/m²NFA then a apartment with passive house window. The addition of an insulating shutter is quite an alternative to window replacement. Optimization through improved control of insulating shutters is quite possible.

Thank you for your attention