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CleanTech Cooling Enabling power plants to conserve and protect scarce water resources

%. Heat Exchanger Fan. Heat ExchangerTabbed Fin . Air Cooled Condensers. Solar Thermal Power. Traditional Power (Coal). Combined technologies improves power plant efficiency by 0.4%; $640K annual benefit for new solar thermal or coal fired power plantsReduces water consumption and environmental footprintAllows for greater flexibility in power plant location.

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CleanTech Cooling Enabling power plants to conserve and protect scarce water resources

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    1. CleanTech Cooling Enabling power plants to conserve and protect scarce water resources

    2. Overall Value Chain Where it all fits together

    3. Benefits of Air Cooled Condensers (vs. water cooled) Source: SBI Solar Energy

    4. Cooling Technologies: Two unique technologies Again, these are two components within an air cooled condenser The fan blows over the air over the heat exchange (with tabs) to cool the steam back to water. Tabbed Fin Tradionally a flat plate where ours has all of those litte tabsAgain, these are two components within an air cooled condenser The fan blows over the air over the heat exchange (with tabs) to cool the steam back to water. Tabbed Fin Tradionally a flat plate where ours has all of those litte tabs

    5. ACC is a fast growing market; NREL technologies could create ~$500M annual benefit by 2012 Source: SBI Solar Energy, SPX WorldWide Air Cooled Condenser Market Estimate Note: Assumes 50% Air Cooled/Dry Cooled Solar Thermal Split . Economic benefit assumes 5% efficiency gain translates into .4% overall power improvement; $40/MWH, 8K annual hours per plant Technology adds value in two ways: Enables ACC units to be more effective so they can be used in more locations > Less water usage Enables efficiency gains which means more energy is produced (since less of the power plants energy has to be used for cooling) The savings impacts both the Solar Market AND the Non-Solar Market (% of savings shown in graph)Technology adds value in two ways: Enables ACC units to be more effective so they can be used in more locations > Less water usage Enables efficiency gains which means more energy is produced (since less of the power plants energy has to be used for cooling) The savings impacts both the Solar Market AND the Non-Solar Market (% of savings shown in graph)

    6. Team Recommendations 6

    7. Startup Options Why not pull IP out of NREL and form Start Up? 7

    8. Appendix 8

    9. Appendix: Interviews Conducted Air Cooled Condenser Manufacturers William Wurtz, SPX Dave Sanderlein, Holtec Solar Thermal Developer David Kluttz, Acciona Fan Blade Manufacturer Confidential Paul Nelissen, Howden Buffalo Academic Harvard Machine Shop Louis R Defeo Inventors James Tangler, NREL Chuck Kutscher, NREL 9 Industry Consultant Jeff Atkin - Senior Counsel at Foley & Lardner LLP Terry Peterson PhD , Solar Power Consulting , (Member of Natural Resources Council) John Maulbetsch, EPRI Consultant Ken Hennon, Clean Air Engineering David Wheeler, Clean Air Engineering

    10. Appendix: Solar Thermal Value Chain 10

    11. WATER - Air Cooled Condensers conserve water, protect environment, and enable power projects where water supply is very limited

    12. Appendix - Cooling Technologies: Summary of Challenges

    13. Appendix - Technology Virtual Tour of Power Plant

    14. Officer Bonk Officer Duong Appendix - IP Review Tabbed Fin History of Patent Application 14

    15. Appendix - IP Review Tabbed Fin Prior Art Review Prior art Risks of infringement 15

    16. Appendix IP Review Tabbed Fin Freedom to operate Necessity of complementary assets: Large scale manufacturing facilities Proprietary Tube Fins Cooling system design (how to arrange fins, pipes) Main players protect their design with patents: Design of parts of the heat-exchanger Design of the heat-exchanger as a whole Complementary assets and protected state of the art systems make it difficult to compare efficiencies, prototypes and to build a full air-cooled condenser independently

    17. Appendix IP Review Fan Airfoil Prior Art Used Today versus New Invention

    18. Appendix - IP Review Fan Airfoil Specific Prior Art Prior art Risks of infringement

    19. Appendix IP Review Fan Airfoil Freedom to Operate Patent is already licensed to a company in the fan industry Neither a start up nor a exclusive license option is possible with the fan.

    20. Appendix IP Summary

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