Research Article
Energy and Daylighting Evaluation of Integrated Semitransparent Photovoltaic Windows with Internal Light Shelves in Open-Office Buildings
Table 16
UDI thresholds in cardinal orientations under CEI clear sky condition (Algiers city).
| Orientation (Algiers) | South | East | North | West | South | East | North | West | South | East | North | West | Configuration (STPV) | UDI <100 | UDI 100–2000 | UDI >2000 |
| R. model | 1 | 1 | 1 | 1 | 66 | 78 | 99 | 82 | 33 | 11 | 0 | 17 |
| STPV 10% | 100 | 100 | 100 | 100 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | STPV 20% | 85 | 89 | 100 | 92 | 15 | 10 | 0 | 8 | 0 | 1 | 0 | 0 | STPV 30% | 54 | 69 | 97 | 75 | 46 | 30 | 3 | 25 | 0 | 1 | 0 | 0 |
| STPV 10% 75% | 24 | 53 | 94 | 58 | 76 | 47 | 6 | 42 | 0 | 0 | 0 | 0 | STPV 20% 75% | 15 | 46 | 84 | 50 | 85 | 53 | 16 | 50 | 0 | 1 | 0 | 0 | STPV 30% 75% | 7 | 30 | 50 | 30 | 93 | 69 | 50 | 70 | 0 | 1 | 0 | 0 |
| STPV 10% 50% | 4 | 11 | 13 | 13 | 93 | 87 | 86 | 86 | 3 | 2 | 0 | 1 | STPV 20% 50% | 3 | 9 | 14 | 10 | 93 | 89 | 86 | 89 | 4 | 2 | 0 | 1 | STPV 30% 50% | 3 | 5 | 8 | 5 | 93 | 93 | 92 | 93 | 4 | 2 | 0 | 1 |
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