Research Article
Environmental Life-Cycle Analysis of Hybrid Solar Photovoltaic/Thermal Systems for Use in Hong Kong
Table 5
Cumulative energy in BiPV/T system.
| | Materials | Quantity consumed (kg) | Cumulative energy intensity (MJ/unit) | Cumulative energy (kWh) |
| | PV/T collector |
| | Front glazing |
| | Low-iron glass (1.61 m2 × 6) | 99.6 | 19.7 | 545.0 |
| | Thermal insulation |
| | Glass wool | 9.50 | 31.7 | 83.7 |
| | Thermal absorber |
| | Aluminum absorber | 86.7 | 219 | 5273.8 |
| | Frame and back cover |
| | Aluminum | 10.1 | 219 | 611.8 |
| | PV Encapsulation |
| | PV Module | 4.86 m2 | 976 | 4743.4 |
| | BOS |
| | Water tank |
| | Stainless steel tank | 19.9 | 82.2 | 454.0 | | Insulation (Glass wool) | 2.14 | 31.7 | 18.8 | | Aluminum Cladding | 1.53 | 219 | 93.0 |
| | Connecting pipe |
| | Copper piping (55 mm dia.) | 7 m | 40.1 | 77.9 | | Pipe insulation (Glass wool) | 1.07 | 31.7 | 9.4 |
| | Structural support and accessories |
| | Pipe fittings and structural parts | 5.25 | 140.0 | 68.1 | | Inverter + electric wiring | 5% of PV module | 237.2 |
| | | | Total | 12585.2 |
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