Molten Salt-Carbon Nanotube Thermal Energy Storage for Concentrating Solar Power Systems Final Report

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We demonstrated that adding nanoparticles to a molten salt would increase its utility as a thermal energy storage medium for a concentrating solar power system. Specifically, we demonstrated that we could increase the specific heat of nitrate and carbonate salts containing 1% or less of alumina nanoparticles. We fabricated the composite materials using both evaporative and air drying methods. We tested several thermophysical properties of the composite materials, including the specific heat, thermal conductivity, latent heat, and melting point. We also assessed the stability of the composite material with repeated thermal cycling and the effects of adding the nanoparticles on ... continued below

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Schuller, Michael; Little, Frank; Malik, Darren; Betts, Matt; Shao, Qian; Luo, Jun et al. March 30, 2012.

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We demonstrated that adding nanoparticles to a molten salt would increase its utility as a thermal energy storage medium for a concentrating solar power system. Specifically, we demonstrated that we could increase the specific heat of nitrate and carbonate salts containing 1% or less of alumina nanoparticles. We fabricated the composite materials using both evaporative and air drying methods. We tested several thermophysical properties of the composite materials, including the specific heat, thermal conductivity, latent heat, and melting point. We also assessed the stability of the composite material with repeated thermal cycling and the effects of adding the nanoparticles on the corrosion of stainless steel by the composite salt. Our results indicate that stable, repeatable 25-50% improvements in specific heat are possible for these materials. We found that using these composite salts as the thermal energy storage material for a concentrating solar thermal power system can reduce the levelized cost of electricity by 10-20%. We conclude that these materials are worth further development and inclusion in future concentrating solar power systems.

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  • Report No.: DOE/GO18154
  • Grant Number: FG36-08GO18154
  • DOI: 10.2172/1036948 | External Link
  • Office of Scientific & Technical Information Report Number: 1036948
  • Archival Resource Key: ark:/67531/metadc838149

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  • March 30, 2012

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • July 22, 2016, 4:23 p.m.

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Schuller, Michael; Little, Frank; Malik, Darren; Betts, Matt; Shao, Qian; Luo, Jun et al. Molten Salt-Carbon Nanotube Thermal Energy Storage for Concentrating Solar Power Systems Final Report, report, March 30, 2012; United States. (digital.library.unt.edu/ark:/67531/metadc838149/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.