advanced building skins 14 | 15 June 2012 - lamp.tugraz.at - Graz ...
advanced building skins 14 | 15 June 2012 - lamp.tugraz.at - Graz ...
advanced building skins 14 | 15 June 2012 - lamp.tugraz.at - Graz ...
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Major energetic<br />
differences<br />
1. Thermal ventil<strong>at</strong>ion<br />
losses<br />
2. Thermal<br />
transmission losses of<br />
windows<br />
3. Thermal<br />
transmission losses of<br />
opaque <strong>building</strong> skin<br />
Scenario<br />
#<br />
Advanced Building Skins<br />
Table 2: Comparison of LEH skin with PH skin<br />
Optimiz<strong>at</strong>ion str<strong>at</strong>egy Analysis within this paper D<strong>at</strong>a sources for the analysis<br />
Mechanical<br />
ventil<strong>at</strong>ion with he<strong>at</strong><br />
recovery<br />
Triple glazed<br />
windows with he<strong>at</strong><br />
protective co<strong>at</strong>ing<br />
and insul<strong>at</strong>ed frames<br />
Analysis of several PHhousing<br />
est<strong>at</strong>es: Comparison<br />
with a scenario for window<br />
ventil<strong>at</strong>ion<br />
Production and disposal of<br />
different windows. Scenario<br />
for Mühlweg-C.<br />
Thermal insul<strong>at</strong>ion Scenarios for Mühlweg-C.<br />
Comparison of different<br />
insul<strong>at</strong>ion m<strong>at</strong>erials<br />
- 4 -<br />
Measuring of electrical energy<br />
consumption for ventil<strong>at</strong>ion.<br />
Calcul<strong>at</strong>ion of thermal<br />
ventil<strong>at</strong>ion losses.<br />
LCA-d<strong>at</strong>asets of<br />
ECOINVENT 2.2 [7]<br />
PHPP-Calcul<strong>at</strong>ion.<br />
PHPP-Calcul<strong>at</strong>ion<br />
LCA-d<strong>at</strong>asets of Ökobau.d<strong>at</strong><br />
2009 [5]<br />
Table 3: Investig<strong>at</strong>ed scenarios for less energy efficient <strong>building</strong> skin of housing est<strong>at</strong>e Mühlweg-C.<br />
Scenario<br />
Title<br />
0 Actual st<strong>at</strong>e<br />
Scenario<br />
Description<br />
PH standard,<br />
Uw = 0.75 W/(m².K); g = 0.51<br />
Useful he<strong>at</strong>ing demand *<br />
[kWh/(m² . a)]<br />
1 No ventil<strong>at</strong>ion Without mechanical ventil<strong>at</strong>ion 24.8 **<br />
2 LEH-windows Uw = 1.1 W/(m².K); g = 0.62 13.3<br />
3<br />
Standard<br />
windows<br />
Uw = 1.3 W/(m².K); g = 0.62;<br />
Close to legal limit<br />
4 Less insul<strong>at</strong>ion <strong>15</strong> cm less insul<strong>at</strong>ion <strong>15</strong>.4<br />
5-a LEH-1<br />
5-b LEH-2<br />
Without mechanical ventil<strong>at</strong>ion, LEH-windows,<br />
13.2 cm less insul<strong>at</strong>ion<br />
Without mechanical ventil<strong>at</strong>ion, standard windows,<br />
6.2 cm less insul<strong>at</strong>ion<br />
* Useful energy demand for space he<strong>at</strong>ing per gross floor area was calcul<strong>at</strong>ed with PHPP2004<br />
** Additional reduction of electricity demand due to window ventil<strong>at</strong>ion: about 2.7 kWh/(m².a) [4]<br />
Insul<strong>at</strong>ion<br />
m<strong>at</strong>erial<br />
Table 4: Physical properties of insul<strong>at</strong>ion m<strong>at</strong>erials and d<strong>at</strong>a sets for LCA<br />
Thermal<br />
conductivity<br />
[W/(m.K)]<br />
Equivalent<br />
thickness<br />
[cm]<br />
Density*<br />
[kg/m³]<br />
LCA d<strong>at</strong>aset<br />
for production [5]<br />
Mühlweg 0.0423 13.2 - - -<br />
EPS 0.035 10.9 30<br />
“2.02 EPS PS 30”<br />
Expanded polystyrene<br />
10.0<br />
16.0<br />
32.9 **<br />
32.9 **<br />
LCA d<strong>at</strong>aset<br />
for end-of-life [5]***<br />
„6.8 Verbrennung PS in<br />
MVA incl. Gutschrift“<br />
TT with ecological credit
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