Dr Keith Lovegrove unveiling the new Big Dish

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Dr. Keith Lovegrove unveiled the ANU's new solar thermal dish in September at the SolarPACES international solar thermal conference in Berlin to much acclaim. This will be the first time it will be presented in Melbourne.

It is the world's biggest solar dish that comes with a mass production system that can build one dish a day. The dish has the highest optical efficiency of any commercial solar technology in the world and a field of 500 produces 100MW electrical power. ANU's dishes can be used on undulating ground, which is difficult for current solar thermal systems that use mirror fields or troughs.

Dr. Keith Lovegrove will also talk about replacing all of Australia's energy needs with this solar technology used in conjunction with thermal salt storage.

Dr. Keith Lovegrove is a senior lecturer in Engineering in the Faculty of Engineering and Information Technology at the Australian National University (ANU). He heads the ANU Solar Thermal Group which works on a range of projects involving high and low temperature thermal conversion of solar energy. This includes looking at dish and trough concentrators and thermochemical energy storage. He is widely published in scientific journals and has advised the Australian Government on CSP . Dr Lovegrove and his team are at the forefront of International research into concentrated solar power.

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Dr Keith Lovegrove unveiling the new Big Dish

  1. 1. Concentrating Solar Thermal Gathers Momentum – presented at ANSZSES Solar 09, modified for beyond zero emmissions K Lovegrove, Solar Thermal Group – School of Engineering CECS, Australian National University ( http://solar-thermal.anu.edu.au )
  2. 2. <ul><li>Developments internationally </li></ul><ul><li>The ANU / Wizard Power Gen II Big Dish </li></ul><ul><li>Energy exports via solar fuels </li></ul>
  3. 3. Concentrating Solar Power is: Parabolic Trough Central Receiver Paraboloidal Dish Linear Fresnel
  4. 4. 354MWe “SEGS” plants going strong after 20 years Steam turbines are the dominant power house
  5. 5. New wave of CSP since 2006 <ul><li>Approx. 600MWe currently in operation (Sept 09) up from 354MWe </li></ul><ul><li>Greenpeace / SolarPACES reports 22,318MW operating or construction </li></ul><ul><li>IEA: Looking for 20GW/yr CSP installation rate 80 x 250Mwe/year, $15trillion dollars of R&D needed for new energy technology </li></ul><ul><li>Lots troughs in Spain, US is generating more innovative approaches </li></ul><ul><li>Beginnings of construction in Nth Africa </li></ul>
  6. 6. Began with Nevada Solar One (Acciona) <ul><li>64 MW e </li></ul><ul><li>Solar Field: 357200m 2 </li></ul><ul><li>Started Feb 06, Com-missioned 2 June 07 </li></ul>Slide courtesy of R Buch, DLR Germany
  7. 7. Slide courtesy of Michael Geyer
  8. 8.
  9. 9. Spain is leading thanks to generous feed in tariff - 400MWe under const plus “true pipeline” projects of14.7GW @Sept09
  10. 10. South West USA states about to happen?
  11. 11. <ul><li>Trough systems are all clones of the Californian SEGS plants </li></ul><ul><li>Approx 6 companies offering large trough systems, all 5m apertures. </li></ul><ul><li>2 (3?) providers of evacuated tube receivers </li></ul><ul><li>2 or 3 providers of the glass facets </li></ul>Pics from Zarza, SolarPACES 09
  12. 12. Several serious players for commercial Tower systems
  13. 13. Slide from Kolb, SolarPACES 09
  14. 14. Slide from Kolb, SolarPACES 09
  15. 15. Slide from Kolb, SolarPACES 09
  16. 16. <ul><li>Ausra’s 5MWe system California, 23 Oct 2008 </li></ul><ul><li>Ausra; 100MWe system for Jordan announced at SolarPACES09 </li></ul><ul><li>At least 2 other commercial players (Novatec Biosol (Transfield) and Solar Power Group) </li></ul>Linear Fresnel
  17. 17. Ausra CLFR @ Liddell 40MW Solar boiler preheating 285 º C, 70b
  18. 18. Storage recognised as immediate competitive advantage for CST
  19. 19. Laing SolarPACES 09, reports a 1MWh combined storage system for steam
  20. 20. Slide courtesy of Michael Geyer Andasol I is new benchmark for solar plants with storage
  21. 21. andasol 1 storage system: 􀀹 NITRATE MOLTEN SALTS (60% NaNO3 + 40% KNO3) 􀀹 TWO TANKS: 􀀹 COLD: 292 ºC 􀀹 HOT: 386 ºC 􀀹 14 m HEIGHT, 38.5 m DIAMETER 􀀹 1010 MWh CAPACITY = 7.7 EQUIVALENT HOURS = 28.500 TONNES 􀀹 HEAT EXCHANGERS HTF/SALTS 􀀹 THERMAL DUTY: 131 MWt charging, 119 MWt discharging 􀀹 NUMBER OF UNITS: 6 􀀹 PUMPS: 4 UNITS IN COLD TANK (3 + 1), 3 IN HOT TANK
  22. 22. <ul><li>440 o 6MPa steam, 3.8MWe </li></ul><ul><li>First system is prototype for 46MW modules </li></ul><ul><li>50m tower borrowed from wind turbine </li></ul><ul><li>Started constr. July 2008, on grid July 2009 </li></ul>eSolar – an impressive new player
  23. 23. Dish systems? <ul><li>Relatively quiet…… </li></ul><ul><li>R&D around Eurodish units </li></ul><ul><li>Stirling Energy Systems (SES) have big systems of Dish Stirling proposed but…? </li></ul><ul><li>Infinia a new player with 3kW dish Stirling </li></ul><ul><li>Solar Systems dish PV in Australia </li></ul>
  24. 24. Australia? At least we are on the radar screen 
  25. 25. =1.3% global electricity Future Prospects – lessons from wind
  26. 26. Source: Sargent & Lundy, 2003
  27. 27. <ul><li>A large aperture, Altitude Azimuth tracking dish </li></ul><ul><li>Completely re-engineered for mass production </li></ul><ul><li>Identical spherical mirror panels </li></ul><ul><li>Formed on an accurate jig </li></ul><ul><li>Space-frame based on circular pipe with simple welded joins </li></ul>The ANU / Wizard Gen II Big Dish (the slightly bigger dish)
  28. 28. Why Big Dishes? <ul><li>1500+ suns = high temperatures = solar driven chemical reactions </li></ul>19.14% 13.81% 10.59% Annual Solar to Electric Eff 0.94 0.92 0.98 Power plant availability 0.86 0.864 0.827 Electric loss efficiency 0.35 0.405 0.35 Turbine power cycle efficiency 1 0.983 1 Storage Efficiency 0.961 0.995 0.961 Piping loss efficiency 0.92 Transient effects 0.9 0.783 0.729 Receiver thermal efficiency 0.85 0.56 0.533 Solar Field Optical Efficiency 10MWe 13.6MWe 30MWe Size ANU Serg&Lund Serg&Lund Dish 10 SolarTres SEGs VI System Tower Trough
  29. 29. <ul><li>Aperture 494m2 </li></ul><ul><li>Focal length 13.4m </li></ul><ul><li>Average diameter 25m </li></ul><ul><li>Average rim angle 50.1 o </li></ul><ul><li>Mirror reflectivity 93.5% </li></ul><ul><li>Number of mirrors 380 </li></ul><ul><li>Mirror size 1165mm x 1165mm </li></ul><ul><li>Total mass of dish 19.1t </li></ul><ul><li>Total mass of base and supports 7.3t </li></ul>Details
  30. 30. Site works started Feb 08…
  31. 31.
  32. 32. Jig will be re-used on future Wizard Power projects
  33. 33. Photogrametry used to measure / adjust support point positions
  34. 34. Coils of sheet steel in…. Structural sections out On site containerised section rolling machine
  35. 35.
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  37. 37.
  38. 38. 31 March 2009
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  57. 57. 380 identical mirrors
  58. 58.
  59. 59.
  60. 60. Mirrors attached by gluing – no adjustment
  61. 61.
  62. 62.
  63. 63. First sun 29 June 2009
  64. 64.
  65. 65. Only 80m 2 of mirrors were deployed
  66. 66. Whoops …..
  67. 67.
  68. 68.
  69. 69.
  70. 70.
  71. 71.
  72. 72. Images of passing clouds are encouraging…
  73. 73. First operation with all mirrors
  74. 74.
  75. 75.
  76. 76. Whoops 2….. Image trajectory
  77. 77. Whoops 3…..
  78. 78.
  79. 79.
  80. 80. Lets try astronomy
  81. 81. Image of Jupiter
  82. 82. Jupiter Full Moon Full Moon over exposed
  83. 83. Relative intensity How good is it really? Target dimensions in mm <ul><li>>2,000 suns at 95% capture </li></ul><ul><li>>10,000 suns at peak </li></ul><ul><li>Old SG3 dish only peaked at 1,500 suns </li></ul>
  84. 84. The new dish was designed and built 95% in house - Many thanks to <ul><li>ANU: </li></ul><ul><li>Justin Bishop </li></ul><ul><li>Greg Burgess </li></ul><ul><li>Jeff Cumpston </li></ul><ul><li>Rebecca Dunn </li></ul><ul><li>Daniel Foo </li></ul><ul><li>John Garzoli </li></ul><ul><li>Chris Griffin </li></ul><ul><li>Wie Shuen Joe </li></ul><ul><li>Ashley Kearton </li></ul><ul><li>Michael Kingsland </li></ul><ul><li>Keith Lovegrove </li></ul><ul><li>David McCready </li></ul><ul><li>Geoff Major </li></ul><ul><li>Jessica Preston </li></ul><ul><li>John Pye </li></ul><ul><li>Paul Scott </li></ul><ul><li>Bethany Thompson </li></ul><ul><li>Kevin Yeh </li></ul><ul><li>Jose Zapata </li></ul><ul><li>Wizard Power: </li></ul><ul><li>Nick Binos </li></ul><ul><li>Rob Brunswick </li></ul><ul><li>Joe Coventry </li></ul><ul><li>Mark Gledhill </li></ul>Support from the Australian federal government under the “Renewable Energy Initiative” and the “Advanced Energy Storage Program” is gratefully acknowledged
  85. 87. The real debate Australia needs to have
  86. 88. Exports Coal & Gas Crops & Algae Water Big Dish solar thermal concentrators used to produce hydrogen and liquid fuels (e.g. methanol) from high temperature solar conversion of coal, gas & biomass In the long term achieved by the thermochemical splitting of water 2012+ 2015+ 2020+ The Future - Exporting Solar Energy to the World Solar Powered Transition to Hydrogen & Emission Free Liquid Fuels Coal & Gas To Liquid Fuels Biomass to Liquid Fuels Thermochemical Water Splitting
  87. 89.
  88. 90. Solar Power station to provide all of Japan’s energy needs ? Legend      greater than 24MJ/m2day      less than 24 but greater than 23mJ/m2day      less than 23 but greater than 22mJ/m2day       less than 22 but greater than 20mJ/m2day       less than 20 but greater than 18mJ/m2day      less than 18 but greater than 16mJ/m2day       less than 16MJ/m2day 338km x 338km, 20% coverage of land with 20% efficient collectors
  89. 91. Conclusions <ul><li>Concentrating Solar Thermal is taking off around the world </li></ul><ul><li>Australia must move fast to keep up </li></ul><ul><li>System design for manufacture of a unique Gen II Big Dish successfully completed </li></ul><ul><li>The design is ready for large scale commercial role out </li></ul><ul><li>Solar fuels for export has huge potential </li></ul>

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