| configuration |
5 year
savings |
10 year
savings |
20 year
savings |
30 year
savings |
40 year
savings |
| [$/(year-ft)] |
[$/(year-ft)] |
[$/(year-ft)] |
[$/(year-ft)] |
[$/(year-ft)] |
| 2x6 wall |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
| 2x6 wall w/
2x2 and 1.5" batting |
2.5 |
7.7 |
18.1 |
28.5 |
38.9 |
| 2x6 wall
with 1.5" exterior polystyrene |
-1.2 |
4.9 |
17.2 |
29.4 |
41.6 |
| 2x6 wall
with 2" exterior bluefoam |
-5.3 |
3.6 |
21.4 |
39.2 |
57.1 |
| 2x6 wall
with 4" exterior bluefoam |
-14.1 |
-1.1 |
25.0 |
51.0 |
77.1 |
| double 2x4
wall |
3.0 |
13.0 |
32.8 |
52.6 |
72.4 |
|
Physics 212 Web Project,
Design by David Dickson