Solar Thermal-Electro Station

8,400.00

The SunOyster is a concentrated solar collector that produces both heat and electricity from the same device, achieving efficiencies higher than anything else available in the market. It achieves high efficiency from a small area. (2 to 3 times higher than a standard installation), produces high grade heat – (higher temperature than standard thermal collectors) and is more cost effective than separate thermal and electrical panels. By using thermal refrigeration systems to convert the heat into cold, the SunOyster can cover the complete energy demand of hotels, office buildings, shopping centres or cool stores. The SunOyster can also cover the power and high grade heat requirements of many industries such as food, textile or chemical manufacturers.

Solar Thermal-Electro Station is a patented concentrating solar collector with roughly 7 m² gross mirror surface. It tracks the sun bi-axially to generate heat and potentially electricity. It comes in 4 versions:
• The purely thermal heat generates up to 5.5 kW of thermal power.
• The hybrid generates in its receiver both up to 2 kW of electricity and 3.5 kW of heat.
• Both versions of these can be combined with 3 photovoltaic (PV) modules with an additional output of up to 1.2 kW of electric power

The station does not require a horizontal surface or platform for installation. It can be installed on any tilted surfaces including slanted roofs up to an angle of up to 45°C. The sub-structure of it can be e.g. naked earth or gravel, concrete or asphalt surface, concrete plates, ground anchors or steel beams, garages, pergolas, tile or metal roof.

Advantages:
• Small area requirement, so that it is also possible to set up on the surface of a single garage.
• Innovative tracking so that it can be set up roof-parallel on pitched roofs.
• Consistently modular construction for easy transport to the construction site and on the roof.
• Outstanding design in different versions.

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Space demand, mechanics and weight:
• Space: The diameter of the swept area is 5.2 m, corresponding to a circular surface of 21.2 m². In a square, the surface is 27 m². The total height of the station mirrors is 2 m, of the mast 2.5m.
• Ring profile: The ring profile on which the station is turning has a diameter of 2.3 m (outer point to outer point.) It is made of alu. For special conditions, it can have a substructure for better spreading the load.
• Main frame: Triangular structure on three wheel groups.
• Other metal parts: Mainly anodized aluminum profiles. Exceptionally hot-dip-galvanized steel parts.
• Torque tube: 2 torque tubes attached to the elevation drive made out of 6082 alu and positioned in the center of the mirror at a height of 1.2 m above the bottom of the ring profile.
• Mirrors: The mirrors of the station have a height of 1.62 m and a width of 2 times 2 m, with a 25 cm gap in between. They consist of thin (1 mm) glass mirrors, glued on a sandwich structure. They reach more than 95 % reflectivity. Concentration factor >= 40 suns.
Warning – avoid concentrated radiation in eyes, on the skin or clothes!
• Weight: The total weight of the station Model White is below 400 kg.
• pvplus: In the front of the mirrors are 3 PV modules with a size of approx. 1.6 m height and 1 m width and +/- 5 cm flexible mounting positions. They are fixed at an angle of 10° to the ground and tracking the sun together with the station from East to West. The weight of the support structure of the modules is up to 50 kg, the weight of typical modules is altogether 54 kg. For details of the modules see their data sheet.

Tracking: Two-axis in Azimuth and Elevation:
Azimuth tracking from East to West 450° rotation angle; planetary gear drive with tooth belt. Elevation drive with planetary and worm gears.

Control System:
• Customized and highly integrated control system with two independent motor controllers.
• Redundant safety system regarding wind speeds, fluid and receiver temperature and pressure.
• Integrated uninterrupted power supply system for closing the station during main grid failure.
• Local or central weather station equipped with at least the following sensors:
• Anemometer and
• Radiation sensor and
• Ambient temperature sensor.
• Integrated inclination sensor and radiation sensors improve the tracking and allow an auto-commissioning of the station.
• Optionally, a camera and additional weather sensors are available on request.

Data Interconnection:
• WLAN 802.11 b/g/n/ac (2.4 + 5.0 GHz)
• Bluetooth 4.2 (only for service)
• Optionally, LAN via RJ45 Connector with 10/100/1000 MBit

Thermal Properties:
• Heat transfer medium in areas without freezing temperatures: De-mineralized water. In other areas: solar fluid, i.e. water with corrosion protection additives. Standard version max. temperature of working fluid: 110°C.
• System pressure: min. 3 bar (2 bar gauge pressure) and max. 7 bar (6 bar gauge pressure).
• Flow Rate: Minimum flow of 200 l/h, at full radiation 550 l/h, maximum flow 1.500 l/h.
• Pressure loss: ≤ 0.3 bar at 550 l/h.
Warning – the high fluid temperature can cause burning hazards!

Station pvplus – PV modules:
The station can carry 3 modules with a size of approx. 1 m x 1.6 m each. See separate datasheet of the PV modules.

Thermal Interconnection:
Pipes for fluid should be installed to the ring profile. Pipes on the station are stainless steel pipes. Therefore, stainless steel is preferred for connecting pipes. The pipes should
have a minimum inner diameter of 25 mm (1 inch) – preferably larger for long runs.

Environmental limits:
• Operational temperatures: – 30°C to + 45°C.
• Survival temperatures: -40°C to +60°C.
• Air humidity: 0-100 %, condensing.
• Wind: normal operation up to 55 km/h. Survival in safety position with normal turbulence up to 150 km/h.
• Snow: German load zone 2 up to 600 m (city of Freiburg).

PV Inverter System:
• ABB UNO DM 3.3 TL PLUS SB with integrated DC Disconnect Switch.
• Max. efficiency: 97 %.
• Grid connection type: AC Single Phase (L / N / PE).
• Rated AC voltage: 230 V.
• Rated output frequency: 50 Hz or 60 Hz.
• Anti-islanding protection: According to local standards.

Electric Interconnection:
Junction box with clamp terminals for the grid connection cable (max. wire size 2.5 mm²). Recommended external AC overcurrent protection: 16 A.

Additional information

Max. heat output

5.5 kW th

pvplus

+ 1.2 kWp