Cu stp 09_parabolic dish

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Cu stp 09_parabolic dish

  1. 1. SOLAR THERMAL POWER! GEEN 4830 – ECEN 5007!9. Parabolic Dish Technology! Manuel A. Silva Pérez ! silva@esi.us.es !
  2. 2. Parabolic dish systems}  Combine a paraboloidal concentrator (parabolic dish) with a Power Conversion Unit (PCU) directly attached to the concentrator MDAC (83-88) Boeing/SES}  Types of PCU (ʻ98-ʼ99) " }  Gas Turbines Advanco (82-85) " }  Direct Steam Generation }  Stirling Engine SBP/Almeria" (88-99)" SBP/Solo" Cummins " (89-96) " SAIC/STM" 1 GEEN 4830 – ECEN 5007 19/07/11
  3. 3. Parabolic Dish + Gas Turbine}  Cummings 1996 2 GEEN 4830 – ECEN 5007 19/07/11
  4. 4. Parabolic dish - Direct Steam Generation Dish collector field at Shenandoah, GA •  Industrial process heat project. •  7 meters diameter, •  aluminized film reflector Heat from the field was used in a textile plant for air conditioning and process heat. 3 GEEN 4830 – ECEN 5007 19/07/11
  5. 5. Solar Village (Arabia Saudí)4 GEEN 4830 – ECEN 5007 19/07/11
  6. 6. Parabolic dish – Stirling engine experiences(source: Mancini et al. JSEE 2003) 5 GEEN 4830 – ECEN 5007 19/07/11
  7. 7. Parabolic dish – Stirling engine}  High performance }  High concentration ratio }  High temperature }  Modularity }  No water consumption •  High capital costs – Stirling engine and concentrator •  High O+M costs – H2 refilling, engine maintenance 10-kW EuroDish •  Durability of the engine SBP/Solo-PSA" 6 GEEN 4830 – ECEN 5007 19/07/11
  8. 8. Dish – Stirling systems. Main elements}  Structure}  Concentrator}  Tracking system}  PCU}  Control 7 GEEN 4830 – ECEN 5007 19/07/11
  9. 9. Structure8 GEEN 4830 – ECEN 5007 19/07/11
  10. 10. Structural optical surface9 GEEN 4830 – ECEN 5007 19/07/11
  11. 11. Space frame structures10 GEEN 4830 – ECEN 5007 19/07/11
  12. 12. Stretched membrane11 GEEN 4830 – ECEN 5007 19/07/11
  13. 13. Concentrator12 GEEN 4830 – ECEN 5007 19/07/11
  14. 14. Glass mirror-faceted }  Spherically curved mirrors }  Individually alignable }  Parabolic shaped structure13 GEEN 4830 – ECEN 5007 19/07/11
  15. 15. Full surface paraboloid}  The entire surface forms a paraboloid}  Usually made of a number of ‘petals’ 14 GEEN 4830 – ECEN 5007 19/07/11
  16. 16. Stretched membrane. Single facet}  Membrane }  Preshaped (vacuum not enough) }  Thin reflective plastic }  Thin metal sheet + reflective surface 15 GEEN 4830 – ECEN 5007 19/07/11
  17. 17. Stretched membrane - multifaceted}  Avoid the need for preshaping}  Difficult alignment 16 GEEN 4830 – ECEN 5007 19/07/11
  18. 18. MountingPedestal Carrousel 17 GEEN 4830 – ECEN 5007 19/07/11
  19. 19. Tracking18 GEEN 4830 – ECEN 5007 19/07/11
  20. 20. Polar tracking19 GEEN 4830 – ECEN 5007 19/07/11
  21. 21. Elevation - azimuth tracking20 GEEN 4830 – ECEN 5007 19/07/11
  22. 22. Receiver}  Absorbs concentrated solar energy and converts it to thermal energy that heats the working fluid (gas) inside the engine. }  External (low temp.) }  Cavity (high temp.) }  Directly illuminated tubes }  Reflux 21 GEEN 4830 – ECEN 5007 19/07/11
  23. 23. Directly illuminated tubes receiver22 GEEN 4830 – ECEN 5007 19/07/11
  24. 24. Reflux receiver}  Intermediate heat transfer fluid}  Decouple receiver and engine }  Pool boiler. The absorber surface is always immersed in a liquid 23 GEEN 4830 – ECEN 5007 19/07/11
  25. 25. Reflux receiver}  Heat pipe. A wick draws the liquid metal from a small sump 24 GEEN 4830 – ECEN 5007 19/07/11
  26. 26. Stirling Engine}  The Stirling cycle 25 GEEN 4830 – ECEN 5007 19/07/11
  27. 27. Stirling engines}  Kinematic}  Free piston 26 GEEN 4830 – ECEN 5007 19/07/11
  28. 28. Cleanergy, 10 kW27 GEEN 4830 – ECEN 5007 19/07/11
  29. 29. Performance of Eurodish System28 GEEN 4830 – ECEN 5007 19/07/11
  30. 30. Performance of the Eurodish System29 GEEN 4830 – ECEN 5007 19/07/11
  31. 31. State of the art}  Most efficient solar to electric technology (>30%).}  Pre-commercial experiences }  Increase reliability }  Reduce costs}  Three (four) main manufacturers / systems today }  Tessera Suncatcher (SES) 25 kW }  Cleanergy / SBP Eurodish 10 kW }  Infinia Corp 3 kW }  (Ripaso Energy) 25 kW 30 GEEN 4830 – ECEN 5007 19/07/11
  32. 32. SES / Tessera Suncatcherhttp://www.tesserasolar.com/ 31 GEEN 4830 – ECEN 5007 19/07/11
  33. 33. SES / Tessera Solar, Maricopa 1.5 MW
  34. 34. Infiniahttp://www.infiniacorp.com/}  3 kW Free piston engine 33 GEEN 4830 – ECEN 5007 19/07/11
  35. 35. Infinia34 GEEN 4830 – ECEN 5007 19/07/11
  36. 36. Eurodishsbp.de}  10 kW kinematic Stirling engine (SOLO V161)}  8.5 m diameter concentrator 35 GEEN 4830 – ECEN 5007 19/07/11
  37. 37. Projects (Tessera Solar / SES)}  Imperial Valley (Solar 2) | Imperial County, California | San Diego Gas & Electric (SDG&E) 750MW | Total of 30,000 SunCatcher™ Power Systems.}  Calico (Solar 1) | San Bernardino County, California | Southern California Edison (SCE) 850MW | Total of 34,000 SunCatcher™ Power Systems. .}  Western Ranch Solar | West Texas | CPS Energy 27MW |Total of 1,080 SunCatcher™ Power Systems.}  Maricopa Solar | Maricopa County - Peoria, Arizona | Salt River Project (SRP) 1.5MW |Total of 60 SunCatcher™ Power Systems. 36 GEEN 4830 – ECEN 5007 19/07/11
  38. 38. Projects (Infinia)}  Infinia }  100 kW demo plant,Vllarrobledo, Spain }  70 MW (2 projects) in Spain }  SD G&E (demonstration projects)}  Cleanergy }  SOLARDIS (5 units x 10 kW) 37 GEEN 4830 – ECEN 5007 19/07/11
  39. 39. }  Free piston engine. }  http://www.infiniacorp.com/howitworks.html }  http://www.youtube.com/watch?v=Fl8iNXsjsbI&feature=fvw}  Tessera /SES }  http://www.youtube.com/watch?v=z-MJrJpW2M0}  Infinia }  http://www.infiniacorp.com/powerdish.html}  Cleanergy}  Eurodish 38 GEEN 4830 – ECEN 5007 19/07/11
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