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| Unimetal photovoltaic modules |
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Unimetal with UNI-SOLAR ®
Unimetal photovoltaic modules are composed of a metal section in pre-painted steel to which the UNI-SOLAR ® laminates are laid and glued.
Technical features
These corrugated covering sheets in the three modules of 31, 68 and 136 W can be produced completely covered by photovoltaic film or only partially covered, as required by the pitch of the roof. The section also vaunts the special feature of "invisible" fastenings, which in addition to eliminating the risk of infiltration also provide an equally important aesthetic effect.
Just one integrated panel provides both the performance typical of a roof and the generation of electrical power, while maintaining the possibility to walk all over the roof for inspection and maintenance.
Although only one steel colour (RAL 7016) and only one thickness (1 mm) are available at the moment, other colours, thicknesses and materials will soon be ready for order.
Flexibility
The flexibility of the panels permits application also on curved roofs (Rmin= 12 m). The pitch of the roof must be within the range of 5 and 60°, although maximum efficiency is obtained at slopes of around 30°.
Durable
Unimetal photovoltaic modules continue to guarantee 80% of the rated installed power even after 20 years of use, cause absolutely no pollution, require no fuel, and exploit the sun's inextinguishable energy while contributing to the electrical requirements of civil, industrial or agricultural buildings.
Left: photovoltaic sheet assembly phases:
A and B fastening of the first element onto the support
C coupling to the next element,
D locking.
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| UNI-SOLAR ® photovoltaic cells |
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| distance between the supports [cm] |
| 60 | 100 | 150 |
| Maximum live load in Kg/m2 |
| 609 | 554 | 227 |
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UNI-SOLAR ® photovoltaic cells
Solar energy is directly transformed into electrical power through a triple layer of amorphous silicon deposited in layers of micrometric thickness onto a slender flexible laminate of stainless steel.
This triple action increases conversion efficiency and performance stability over time, even at low levels of incoming solar energy.
This technology also permits a reduction in both weight and the degradation of conversion that occurs with the increase of operative temperature compared to the use of crystalline silicon cells.
The photovoltaic generator
Numerous cells are positioned in series to create a module. Connecting numerous modules together in series creates a string with the output voltage established and a current equal to the current of the module. Depending on the installed power, numerous strings must be connected in parallel, the combination of which constitutes the direct current photovoltaic generator.
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| Photovoltaic systems |
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In order to utilise the electrical energy produced by a photovoltaic generator, other components must be used that vary according to the type of system selected.
Photovoltaic systems can be classified into autonomous systems with or without power accumulation cells and systems connected first to the centralised network and then distributed.
Final users usually must be fed with alternating current (AC) and then an AC/DC converter or inverter preferably configured to extract the maximum power available must be installed downstream from the continuous current (DC) photovoltaic generator, as the latter does not supply energy that remains constant over time and varies with the changing seasons, weather conditions and the alternation on day and night.
This inconstancy in electrical power supply requires either the use of accumulation cells or connection to a local or national electrical power grid in order to provide the final user with complete autonomy.
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| UNI-SOLAR ® photovoltaic laminates |
| | PVL-68 | PVL-136 |
| Rated power Wp [W] | 68 | 136 |
| Rated voltage Vmp [V] | 16,5 | 33 |
| Rated current Imp [A] | 4,13 | 4,13 |
| Open circuit voltage Voc [V] | 23,1 | 46,2 |
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| Unimetal / UNI-SOLAR ® photovoltaic laminates |
| | Modus FV 300 | Modus FV 600 |
| Weight [Kg/m2] | 13,12 | 13,12 |
| Length [mm] | 3000 | 6000 |
| Useful width [mm] | 460 | 460 |
| Rated power Wp [W] | 68 | 136 |
| Connector block dimensions [mm] | 118x115x38 | 118x115x38 |
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| Plant operation outline |
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