14322

CSPonD: Concentrated Solar Power on Demand

Keywords:

Solar mirror, Binary actuation, Active optics, TrSolar thermal power, Energy storage, Ternary eutectic salt, Nanoparticles, Salt bath, Nitrate, Chloride and Carbonateacking

Applications:

Solar thermal power generators

Problem:
  • Alternative energy storage
  • Elimination of solar tower
  • Significant thermal energy loss of conventional solar boilers
  • High capital costs in building heavy solar boilers

Technology:

The system is designed to absorb concentrated solar radiation in a molten eutectic salt. The liquid salt is contained in an insulated crucible with an aperture for entry of concentrated light. The salt serves as a volumetric energy absorber, an energy storage medium, a high temperature heat transfer fluid, and a suspending fluid for absorptive nanoparticles. The system efficiently absorbs solar radiation through the volume of molten salt and retains the energy for gradual release into a heat exchange system. The typical operating temperature of the device is 600C to 1000C. The device can be combined with solar collection apparatus and heat exchanging mechanisms.

Advantages:
  • Increase of 30-40% in efficiency over current technologies
  • Energy Storage
  • Low capital costs

Inventors:

Intellectual Property:
  • Case 13251: PCT Patent application PCT/US2010/049474 filed on September 20, 2010
  • Case 14322: US Patent application 61/356882 filed on June 21, 2010

Publications:

A.H. Slocum, D.S. Codd, J. Buongiorno, C. Forsberg, T. McKrell, J.C. Nave, C. Papanicolas, A. Ghobeity, C. Noone, S. Passerini, F. Rojas, and A. Mitsos, 2010. “Concentrated solar power on demand.” Solar Energy, submitted for publication.

MIT News

Related Cases:

13251: Solar Power Tower with Direct Absorption of Solar Radiation in a Salt Bath with Nanoparticles

13283: Device for Tactile Sensing and Surface Metrology

13728: Concentrating Solar Power Receiver, Storage Tank, and the Salt Bath with Nanoparticles

14620: Site Selection for Hillside Central Receiver Solar Thermal Plants

Last revised: March 1, 2012

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