CSP Technology

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CSP Technology
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How do we develop this resource?

• Concentrating Solar Technologies can be used to
  mine this resource.
• Some of these technologies use curved mirrors to
  focus the suns rays and to make steam, others
  directly produce electricity.
• This steam is used to produce electricity via
  conventional power equipment.
• In multi-Megawatt plants, CSP provides the lowest
  cost solar electricity.
• Can provide bulk and/or distributed generation.

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CSP Options for Large-Scale Power
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CSP Characteristics

• Distributed Power
• (kWs to MW's)
• on-grid (e.g., line support)
• stand-alone, off-grid

• Dispatchable Power
• (50s to 100s of MW's)
• Utility-scale intermediate power
• Peaking power where appropriate

CPV
Troughs Towers
Dishes
Dispatchability of Electricity Through storage
or hybridization Conventional technology
Generally, made of glass, steel, gears, turbines,
etc. allows rapid manufacturing scale-up, low
risk Unique solar components Will be identified
during the presentation
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Power Tower Technology
Focus on molten-salt plant

• Heliostats (two-axis tracking)
• Air or Molten-Salt Receiver
• Air or Molten-Salt Working Fluid
• Thermal Storage
• Conventional steam- Rankine cycle power block, or
  Combustion Turbine
• Lacks a developer in the US, one may be emerging
  in Spain

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Dish Stirling Technology

• Dish (two-axis tracking)
• 10 and 25 kW Stirling Engines
• Thermal receivers
• Distributed generation or bulk power
• 8 different system configurations built and
  tested over the last 20 years
• Utility interest growing

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Concentrating PV Technology

• 25- 35 kW CPV Systems
• Two axis tracking structure
• 350 m2 concentrator
• 3M Acrylic lens concentrator at 250X or parabolic
  dish with PV at focal point
• Silicon solar cells
• Several companies are developing sound business
  plans

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Trough Technology

• Trough Collectors (single axis tracking)
• Heat-Collection Elements
• Heat-transfer oil (Therminol VP1)
• Oil-to-water Steam Generator
• Oil-to-salt Thermal Storage
• Conventional steam- Rankine cycle power block

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Schematic of Typical Trough Plant
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