Research Article
Energy and Daylighting Evaluation of Integrated Semitransparent Photovoltaic Windows with Internal Light Shelves in Open-Office Buildings
Table 15
UDI thresholds in cardinal orientations under intermediate sky condition (Kuala Lumpur city).
| Orientation (Kuala Lumpur) | South | East | North | West | South | East | North | West | South | East | North | West | Configuration (STPV) | UDI <100 | UDI 100–2000 | UDI >2000 |
| R. model | 0 | 0 | 0 | 0 | 85 | 76 | 88 | 82 | 15 | 24 | 12 | 18 |
| STPV 10% | 100 | 100 | 100 | 100 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | STPV 20% | 100 | 93 | 100 | 96 | 0 | 7 | 0 | 4 | 0 | 0 | 0 | 0 | STPV 30% | 71 | 55 | 75 | 70 | 29 | 45 | 25 | 30 | 0 | 0 | 0 | 0 |
| STPV 10% 75% | 32 | 25 | 34 | 39 | 68 | 74 | 66 | 61 | 0 | 1 | 0 | 0 | STPV 20% 75% | 16 | 14 | 19 | 27 | 84 | 85 | 81 | 73 | 0 | 1 | 0 | 0 | STPV 30% 75% | 8 | 3 | 8 | 15 | 92 | 97 | 92 | 85 | 0 | 0 | 0 | 0 |
| STPV 10% 50% | 3 | 2 | 3 | 6 | 97 | 97 | 97 | 94 | 0 | 1 | 0 | 0 | STPV 20% 50% | 2 | 0 | 2 | 4 | 98 | 99 | 98 | 96 | 0 | 1 | 0 | 0 | STPV 30% 50% | 1 | 0 | 1 | 2 | 99 | 99 | 99 | 98 | 0 | 1 | 0 | 0 |
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