The Promise of Molten Salt: A Vision of CSP Displacing Coal
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- Intro to Halotechnics and molten salt - A few predictions for the CSP end game - CSP technology evolution, from troughs to towers and beyond Justin Raade, CEO & Founder, HALOTECHNICS INC
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The Promise of Molten Salt: A Vision of CSP Displacing Coal
- 1. The Promise of Molten Salt A vision of CSP displacing coal Justin Raade, PhD CEO and Founder jraade@halotechnics.com 510-547-2634 1 CST Power 2011 © 2011 Halotechnics, Inc.
- 2. Halotechnics, Inc. Halotechnics – Molten salt for heat transfer and thermal storage Dr. Justin Raade $1.5 million DOE Breakthrough salt Halotechnics founded, NSF SBIR grant begins molten salt grant awarded for mixtures discovered spins out of Symyx to awarded for CSP research at Symyx molten salt R&D commercialize products materials R&D 2007 2008 2009 2010 2011 2012 2 CST Power 2011 © 2011 Halotechnics, Inc.
- 3. Company profile of Halotechnics, Inc. • Halotechnics is developing the most advanced molten salt products in the world • Headquarters in Emeryville, California with fully equipped chemistry lab • Experts in materials science, chemistry, and engineering on staff • Advisory board made up of industry veterans Halotechnics, Inc. 3 CST Power 2011 © 2011 Halotechnics, Inc.
- 4. Core expertise: Discover advanced thermal materials • High throughput automated workflow • Can screen up to 100 mixtures/day 4 CST Power 2011 © 2011 Halotechnics, Inc.
- 5. Products from Halotechnics Advanced heat transfer fluids Saltstream 500 Saltstream 565 Saltstream 700 Saltstream 700 traditional salt synthetic oil Saltstream 500 0 100 200 300 400 500 600 700 °C traditional salt 5 CST Power 2011 © 2011 Halotechnics, Inc.
- 6. Saltstream 565 target properties Saltstream 565 FLiNaK 60/40 salt 100 200 300 400 500 600 700 °C • Drop-in replacement for 60/40 solar salt (NaNO3-KNO3) > Similar thermal properties (melting point, maximum temperature) > Low corrosion tendencies • Lower cost, earth abundant components 6 CST Power 2011 © 2011 Halotechnics, Inc.
- 7. Advanced heat transfer fluids Saltstream 700 FLiNaK 60/40 salt 100 200 300 400 500 600 700 °C U.S. Patent Saltstream 500 Application No. 61325725 Hitec synthetic oil 0 100 200 300 400 500 600 °C 7 CST Power 2011 © 2011 Halotechnics, Inc.
- 8. Energy demand Worldwide electricity demand: 2,000 GW 8 CST Power 2011 © 2011 Halotechnics, Inc.
- 9. The ultimate energy source Worldwide electricity demand: 2,000 GW 37,500,000 GW Why do we dig in the dirt for dead dinosaurs? 9 CST Power 2011 © 2011 Halotechnics, Inc.
- 10. Two reasons Reduce costs Make storage work = Increase operating temperature 10 CST Power 2011 © 2011 Halotechnics, Inc.
- 11. Stuck in the past Steam Steam Temperature Pressure (°C) (MPa) Why are we using 1960 steam turbine technology in CSP plants? 11 CST Power 2011 © 2011 Halotechnics, Inc.
- 12. Running out of steam Steam as a working fluid will hit a wall Use gas turbines 12 CST Power 2011 © 2011 Halotechnics, Inc.
- 13. Evolution of CSP Use central receivers 13 CST Power 2011 © 2011 Halotechnics, Inc.
- 14. Use storage that works Use 2-tank storage 14 CST Power 2011 © 2011 Halotechnics, Inc.
- 15. Central Receiver Gas Turbine (CRGT) • Central receiver operating at 900 °C • 2-tank thermal storage with 600 °C temperature difference • Brayton cycle gas turbine 15 CST Power 2011 © 2011 Halotechnics, Inc.
- 16. Central Receiver Gas Turbine (CRGT) 2 3 1 4 • What do we need to get here? 1. Heat transfer and thermal storage media 2. Cheap structural materials 3. HTF to gas heat exchanger 4. Gas turbine of correct size 16 CST Power 2011 © 2011 Halotechnics, Inc.
- 17. Path forward • Build what we have, deliver the goods • Focus research, development, and deployment to achieve SunShot goal of 6 ¢/kWh by 2020 “We should be using nature’s inexhaustible sources of energy.... I'd put my money on the sun and solar energy. What a source of power! I hope we don't have to wait until oil and coal run out before we tackle that.” Thomas Edison, 1931 17 CST Power 2011 © 2011 Halotechnics, Inc.
- 18. The Promise of Molten Salt A vision of CSP displacing coal Justin Raade, PhD CEO and Founder jraade@halotechnics.com 510-547-2634 18 CST Power 2011 © 2011 Halotechnics, Inc.