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Synthesis and Characterization of Nano Heat Transfer Fluid (NHTF)

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This paper describes a nano-heat transfer fluid (NHTF) consisting of a novel mixture of alkali metal nitrate salt eutectic doped with silica nanoparticles at 0.5% mass concentration with a low melting point, high thermal stability and high specific heat capacity. These properties produce a wide operating range Heat Transfer Fluid and enable effective thermal storage for parabolic trough concentrating solar power plants as compared to present molten salt heat transfer fluids that usually has a high melting point, typically 220°C or higher. This limits its use due to the risk of freezing. The advanced NHTF exploits eutectic behavior with a novel composition of materials and nanoparticles, resulting in a low melting point of 120 °C, a thermal stability limit over 500 °C and an increase in specific heat capacity owing to the presence of suspended silica nanoparticles.
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Keywords: Nano heat transfer fluid; SEM; TGA/DSC; XRD; heat capacity; silica nanoparticles

Document Type: Research Article

Publication date: 2012-04-01

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  • Current Nanoscience publishes authoritative reviews and original research reports, written by experts in the field on all the most recent advances in nanoscience and nanotechnology. All aspects of the field are represented including nano- structures, synthesis, properties, assembly and devices. Applications of nanoscience in biotechnology, medicine, pharmaceuticals, physics, material science and electronics are also covered. The journal is essential to all involved in nanoscience and its applied areas.
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