Solar Catcher
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The document describes the Solar CatcherTM, an advanced solar power conversion system that uses a Brayton cycle turbine with alternator for high efficiency. It can include optional energy storage like vanadium batteries for 24 hours of operation. The system has an efficiency over 30% with no piping needed and can operate at moderate turbine temperatures. It is designed for areas like Asia with medium solar insolation and hot, humid climates.
Solar Catcher
- 1. Solar CatherTM Advance Solar Power Conversion 211/2 V.S.S Bldg, Ratchadaphisek Rd., Din-daeng, Bangkok, Thailand, 10400 airscan_us@yahoo.com
- 2. Solar Catcher TM Advance Solar Energy Conversion • Solar CatcherTM is an advanced solar power conversion system that utilizes high efficiency Brayton cycle turbine with alternator. • Energy storage for 24 hrs operation (Vanadium Battery or Molten Salt) with exceptional efficiency and durability (optional added to Dish Brayton). • An advanced Power Conversion Unit with no mechanical wear and no ancillary accessories systems. • Overall net conversion efficiency > 30 %. • No pipe line and insulation required. • Minimum land area. • Zero-Emission. • Long Life maintenance turbine for 40,000 hrs. • One moving part (turbine with alternator). • Operates at moderate turbine temperatures and low stress levels.
- 3. Solar Catcher™ system is a concentrating solar power Dish technology equipped with a Brayton Turbine special designed for medium solar insolation, soft-land, hot and humid country zone such as Asia Zone. Its mission is to build the most affordable, modular and scalable solar solution in the industry for utility scale solar power market. Parabolic Dish systems use mirrors to focus the incident light onto a single central receiver in front of the mirror. They so far have the highest heat-electricity conversion efficiencies among all CSP designs up to 65 %. The size of the concentrator is determined by its engine. A dish/Brayton Turbine system’s concentrator with a nominal direct solar insolation from 500-1,000 W/m2 and a 2-100 kWe capacity has a diameter of approximately 3 to 20 meters. It could also run on a single Rankine or Brayton cycle, where water, or other gas is compressed, heated and expanded into a turbine. Parabolic dish could be applied individually in remote locations, or grouped.
- 4. For small-grid (village power, 2 - 10 KW) or end-of-line utility (1 - 100 MW) applications. The system had no thermal delivery tubes so it is minimum thermal losses. The electricity transmitted to the gird or storage in Vanadium Batteries. Intermittent cloud cover can cause weakening of highly concentrated receiver source flux. Sensible energy storage in single-phase materials was proposed to allow a cylindrical absorber element not only absorb the energy but also store it in its mass, thus reducing the amplitude of cloud cover transients. Although this design only allows short period energy storage.
- 5. It could equipped with Vanadium Battery or Thermal Storage for longer operation time, 6, 12, 24 hrs. Designed and developed by Solar Space Frame Industrial Co., Ltd. Thailand. Solar Catcher™, CSP technology is a 2, 5, 10, 25, or 100 kWe system. The SFI, Solar Catcher™, achieved commercial deployment in early 2013. It’s clean solar energy. The Solar Catcher™ technology makes it possible for large power facilities to provide clean, reliable, cost-effective and truly sustainable solar power to communities, while addressing renewable energy portfolio targets, and tackling global climate change by actively reducing our planet’s carbon emissions.
- 6. TM Solar Catcher 1,000 W/m2 System Area Sun Hour Peak Off Peak Cost Power Hot Water Electrical Cost Base Ft Adder Total Income Daily Hot Water Monthly Yearly Return System Life ROI Advance Solar Energy Conversion Investment Analysis Solar Cell Solar Catcher 5.00 72.00 5.00 50.00 4.00 11.00 13.00 200,000.00 1,000,000.00 125.00 93.75 100,000.00 500,000.00 20.00 3.50 1.00 8.00 12.50 3.50 1.00 8.00 12.50 250.00 980.00 405.00 41,550.00 498,600.00 24.1 2.0 25 11.47 7,500.00 90,000.00 66.7 5.6 25 3.50 kW Sq.m hrs hrs THB/kW THB kWhr kWhr THB/kWhr THB/kWhr THB/kWhr THB/kWhr THB THB THB THB Month Year Year %
- 7. Technical specifications Apeture area (net) 25 100 400 m2 Mean collector diameter .3 1 2 m2 Focal Length Reflector 2.5 6.25 12 m2 Mean half-rim angle Number of mirror panels 43.6 100 400 ° 1600 Mirror reflectivity Tracking 93 % Actuation Electrical Motor Elevation envelope 0 to +90 ° Azimuth envelope + or – 270 ° Pointing error <= + or - 2 mrad Cut-off wind speed 80 Sun position programme km/h open-loop Weight Weight/aperture ratio 3 6 10 kg/m2 Generator Permanent Magnet 5 50 100 kW Turbine Pressure 3 1200 Temperature Mas Flow Rate 25 ATA °C 100 Condenser Air Cooled Storage Vanadium Battery or Molten Salt 6, 12, 18, 24 hrs Controller 3 Phase Grid Connected Inverter 400 LPS Performance Receiver Solar power intercepted Solar power absorbed in absorbed Equivalent heat rate fed to turbine Gross electricity generated Net power fed to the grid Solar-to-electric conversion eff. @ 1,000.00 0.64 635.00 0.91 577.85 0.88 558.80 0.35 222.26 0.31 200.00 20.00 500.00 317.50 288.93 279.40 111.13 100.00 20.00 W/m2 Wrad Wt Wt We We %