Civil Engineering Reference
In-Depth Information
Table 3 EPBT and CO
2
PBT values (Tripanagnostopoulos et al.
2005
)
System EPBT and CO
2
PBT results
EPBT for replacing
electricity only (yr)
CO
2
PBT for replacing
electricity only (yr)
EPBT for replacing
electricity and gas (yr)
CO
2
PBT for replacing
electricity and gas (yr)
PV
2.9
2.7
2.9
2.7
PV ? REF
2.7
2.5
2.7
2.5
PV-TILT
3.2
3.1
3.2
3.1
PVT/UNGL-25 C
1.0
0.9
1.2
1.5
PVT/UNGL-35 C
1.9
1.7
2.2
2.4
PVT/UNGL-45 C
3.6
3.3
3.8
3.7
PVT/UNGL ? REF-25 C
0.9
0.9
1.2
1.4
PVT/UNGL ? REF-35 C
1.7
1.5
2.0
2.2
PVT/UNGL ? REF-45 C
3.1
2.9
3.4
3.4
PVT/GL-25 C
0.8
0.8
1.1
1.3
PVT/GL-35 C
1.3
1.2
1.6
1.9
PVT/GL-45 C
2.2
2.0
2.6
3.0
PVT/GL ? REF-25 C
0.8
0.8
1.0
1.3
PVT/GL ? REF-35 C
1.2
1.1
1.5
1.8
PVT/GL ? REF-45 C
2.0
1.9
2.4
2.7
PVT/UNGL-TILT-25 C
1.0
1.0
1.3
1.6
PVT/UNGL-TILT-35 C
1.9
1.8
2.3
2.5
PVT/UNGL-TILT-45 C
3.8
3.5
4.1
4.1
PVT/GL-TILT-25 C
0.8
0.8
1.1
1.4
PVT/GL-TILT-35 C
1.3
1.2
1.6
2.0
PVT/GL-TILT-45 C
2.2
2.0
2.7
3.1
