Optimisation of thermo-optical properties of SiO2/Ag–CuO nanofluid for direct absorption solar collectors
| Autor: | Albin Joseph, C.S. Sujith Kumar, Sreehari Sreekumar, Shijo Thomas |
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| Rok vydání: | 2019 |
| Předmět: |
Yield (engineering)
Materials science 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials Nanomaterials Thermal conductivity Nanofluid Chemical engineering Thermal Materials Chemistry Particle Physical and Theoretical Chemistry 0210 nano-technology Absorption (electromagnetic radiation) Mass fraction Spectroscopy |
| Zdroj: | Journal of Molecular Liquids. 296:111986 |
| ISSN: | 0167-7322 |
| Popis: | Augmenting thermal and optical properties of working fluids used in solar thermal conversion systems using hybrid nanomaterials is gaining prominence. In the present study photo-thermal analysis and thermal conductivity investigations were performed on SiO2/Ag–CuO binary water based nanofluid. The influence of particle concentration and surfactant concentration on thermo-optical properties were investigated using the design of experiment concept. Analysis of variance (ANOVA) was employed to study the significance of the process parameters on thermal conductivity and solar weighted absorption fraction of nanofluid. The statistical optimisation of the process parameters was done using the desirability function. The optimum combination of nanoparticles and surfactant that yield good thermal conductivity and solar absorption was found to be SiO2/Ag: 206.3 mg/L, CuO: 864.7 mg/L, and SDS (surfactant): 1996.2 mg/L. The optimum mass fraction of constituents yielded a relative thermal conductivity of 1.234 and solar weighted absorption fraction of 82.82%. |
| Databáze: | OpenAIRE |
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