Old buildings as low-energy housing units
The fact that Neopor® can turn old buildings into low-energy housing units has been proven by BASF in Ludwigshafen, Germany. A mere three liters of heating oil per square meter per year with a concurrent reduction of the volume of CO2 emissions by more than 80 percent – BASF’s Three-Liter House achieves these impressive figures. This highly modern building is a completely renovated old building from the year 1930. In comparison to an old building that has not been renovated, the annual heating consumption drops by a factor of 7 to 10: instead of 23 liters of oil per square meter, consumption is now only 3 liters. For tenants in a 100-m2 apartment, this means a reduction in heating costs from 700 euros to less than 100 euros per year.
|
The savings can be ascribed primarily to the thermal insulation with 20-cm Neopor® panels on the exterior walls. |
Installation proposal for insulation with composite thermal insulation system, with a benefit estimate
|
|
Current status
without
insullation |
Insullation with
100 mm
of Neopor |
Insullation with
120 mm
of Neopor |
Insullation with
140 mm
of Neopor |
Insullation with
160 mm
of Neopor |
|
Coefficient of heat transmission
(U value) [W/(m2 · K)] |
1.6 |
0.29 |
0.25 |
0.22 |
0.19 |
|
Heating requirement
Qh value [[kWh/yr] per m2 |
121 |
22 |
19 |
16.5 |
14.5 |
|
Heating energy requirement
[kWh/yr] at ntotal = 0.86 per m2 |
141 |
25.5 |
22 |
19 |
17 |
|
Oil equivalent [L/(m2 · yr)]
or gas equivalent [m3 /(m2 · yr)] |
14.1 |
2.6 |
2.2 |
1.9 |
1.7 |
|
Oil or gas savings relative to the current status
L/(m2 · yr)] or [m3 /(m2 · yr)] |
- |
11.5 |
11.9 |
12.2 |
12.4 |
|
Oil or gas savings for an exterior wall surface
area of 100 m2 [L/(m2 · yr)] or [m3 /(m2 · yr)] |
- |
1,150 |
1,190 |
1,220 |
1,240 |
|
Oil or gas savings for an exterior wall surface
area of 100 m2 [L/(m2 · yr)] or [m3 /(m2 · yr)] |
- |
34,500 |
35,700 |
35,600 |
37,200 |
|
Use of Neopor® in m3 |
- |
10 |
12 |
14 |
16 |
Comprehensive information about the Three-Liter House can be found at http://www.3lh.de/
|
Three-Liter House 
