The Solar Roof Tiles by paXos retain the aesthetics of a conventional roof. The incoming sunlight is converted directly into electricity. In combination with a battery storage system, you can also use the self-produced electricity at times when the sun is not shining. If you additionally connect our Solar Roof Tiles with a heat pump, you can provide heat for your house even more efficiently.
|Solar roof tile.NRW ‐ Decentralized power and heat supply made in NRW|
|Project Partner: Technische Hochschule Köln|
|This project is funded by the European Regional Development Fund (EFRE).|
The Solar Roof Tile-Mild Hybrid 14.5W (SDP-MH 14.5W) is a building-integrated, monocrystalline photovoltaic module (BiPV). It has similar dimensions, weight and appearance to a conventional roof tile. It can be installed by roofers you trust. Please contact us for further information on the method.
The design of the Solar Roof Tile-Mild Hybrid is based on the intensive study of the roof systems used in Germany. It improves performance points as well as production and installation. We are always in close professional exchange with craftsmen and experts to realize a successful product. It has been shown that a functional structure of the SDP-MH meets our requirements without restrictions. Currently, the SDP-MH consists of two main components, the glass package and the housing.
Photovoltaic Module (Glass Package)
We use a glass-glass design for our SDP-MH 14.5W. This leads to a very high mechanical strength, which is even higher than that of classic modules due to the small format. It is even possible to walk on the solar roof tiles for installation purposes. In addition, the glass package is "hermetically" sealed with a diffusion-tight edge sealing. Thanks to this technology, which comes from the insulating glass sector, the solar cells are protected against moisture for several decades. This significantly increases their service life compared to conventional solar modules.
The housing is made of a high-quality aluminum alloy using a laser punching process. An optimal corrosion protection is generated by a special KTL coating of all housing parts. The final powder coating creates the aesthetic coloring. The mounting on the roof batten is realized by two high-strength stainless steel screws, the protection against storm suction by two wood screws positioned offset.
During assembly, the glass-glass module is inserted into the housing and thus mounted in a movable manner. The covering of the outer glass area by the enclosing housing serves as additional glass edge protection. The combination of these two main components leads to an aesthetic, durable and highly efficient solar roof tile.
The SDP-MH is optimized for fast and efficient installation. After building up the roof structure, the solar roof tiles can be laid like normal roof tiles and screwed to the roof battens. The electrical connection (plugging in) can also be carried out afterwards without any problems. Screwing and connection require max. 25 s per solar roof tile - e.g. just less than 4 hours for an 8 kWp roof area with approx. 550 solar roof tiles.
This allows the trades of the roofer and solar installer to be clearly separated - but can also be done directly together.
In the course of the design and safety qualification, in addition to the minimum requirements for hail impact resistance, extended tests with considerably higher loads were carried out.
Thereby the SDP-MH 14.5W achieved 10 times the resistance force of the required minimum according to IEC.
In addition, increased hail impact resistance tests were carried out in accordance with the VKF test standard.
Both the glass/glass module and the roof system, consisting of SDP-MH and the wave profile, have met the requirements of hail resistance class (HW) 4. Inclusion in the hailstorm register is in progress.
For more convenient installation and maintenance, the SDP-MH is classified as walkable according to DIN 18008-6, as no damage to the glass has occurred up to a load of 450 kg.
Up to a load of 300 kg there was no damage to the (in itself) sensitive solar cells, because they are safely protected in our glass package. Taking into account the dynamic safety factor, the SDP-MH can be loaded up to 150 kg without any problems and can therefore be stepped on - regardless of the angle at which it is installed. The same stepping safety applies to the integrated mounting step.
As part of the module breakage test, the solar roof tile is subjected to a point load with a sphere weighing 45.5 kg and measuring 250 mm in diameter. The ball swings onto the modules in a suitable (standardized) device.
No visible or technical damage was caused to the SDP-MH by the ball.
For increased fire safety, tests were carried out in the area of DIN 13501 for so-called hard roofing.
The SDP-MH receives the certification as BROOF (t1), where t1 corresponds to the first test method according to DIN V ENV 1187. This means that our solar roof tile is just as fire-safe as a conventional roof tile made of clay or concrete, because it achieves the highest classification for fire safety.
The inconspicuous integration of a high-performance solar module into the roof structure is a key argument for using the Solar Roof Tile-Mild Hybrid from paXos. In addition to the functional design, there are further advantages due to the entire roof system. These include the preservation of the aesthetics. In addition, there is no need for double roofing compared to elevated modules.
The main feature of the system is the movable bearing of the glass module of the SDP-MH 14.5W. Since this is not glued as in other systems, the patented slidability of the glass module offers the possibility to access the inner workings of the SDP while it is already installed.
After the glass package has been pushed up, only the screws for holding and securing against storm suction have to be loosened. Then the single SDP-MH can be pulled out of the roof by the frame without having to remove the entire roof. The SDP-MH can be inserted again in the same way and secured against storm suction. Traditional clip solutions, on the other hand, cause problems in placing the storm suction clips in the already installed roof.
The roofing and connection of the electrical components are independent of each other. Therefore, the roof can first be covered by a qualified roofer and then connected by a trained solar technician. In addition, a revision is easy to carry out.
Besides the glass module, the separate housing is another systemic advantage. The flexible connection ensures freedom during installation and exchangeability of individual modules. Furthermore, the rear ventilation is integrated directly into the housing. Stable and durable materials ensure that your house is protected. The SDP-MH is also protected against storm suction by the housing. In addition to row roofing, offset roofing is also possible.
A cavity is integrated into the housing between the two openings, front to bottom and back to top. When several SDP-MH overlap, an air duct is formed. By natural convection, the cooler air rises to the top when warming up.
The air duct provides rear ventilation and cooling of the solar cells. This increases the efficiency of electricity generation.
The temperature of the solar cells is reduced by the rear ventilation. This is accompanied by an increase in service life and degradation is significantly minimized.
With the help of an air-water heat pump, the air heated by the solar cells can be sucked off centrally in the ridge and made usable. The warmed up air provides for a more efficient operation of the heat pump, so that less power is needed for the supply of heat.
The use of modern cell types and different powder coatings contributes to an exceptionally wide range of colors. In this way you can choose between four colors of the SDP-MH on your roof. Do you prefer the classic black look or terracotta? Or something more fancy like a blue or green roof? We make it possible that the color does not set you any limits when choosing your solar system!
|Dimensions||468 x 331.5 x 30.8 mm|
|Junction box||67 x 75 x 15.7 mm, IP67|
4 mm², 0.47 m
|Solar cells||Monocrystalline, PERC|
|Open circuit voltage||5.3 V|
|Short circuit current||3.5 A|
|Nominal voltage (Umpp)||4.5 V|
|Nominal current (Impp)||3.3 A|
|Nominal power (Pmpp)||14.5 W|
|Cover length||340 +/- 5 mm|
Highly efficient monocrystalline PERC solar cells are used for the SDP-MH 14.5W. These are brought into an optimal format, so that a high power density is achieved with outstanding aesthetics. Due to an intelligent interconnection, the current intensity remains low, which reduces the electrical losses within the module. A further advantage of the interconnection is a better shade compensation compared to common solar systems, which leads to higher annual power yields.
Further information about the SDP-MH 14.5W will follow shortly at this point.
More information about the installation will follow here shortly.