Modeling of heat and mass transfer processes in nanofluids on the example of a parabolic solar collector
DOI:
https://doi.org/10.25206/2588-0373-2025-9-3-47-56Keywords:
nanofluid; concentrating, parabolic, solar collector; single-phase model; two-phase model; turbulator.Abstract
The article presents the main mathematical models for numerical simulation of heat transfer processes occurring in a nanofluid – single-phase and two-phase models. A description of the device and the principle of operation of a concentrating parabolic solar collector are demonstrated. The authors perform computational studies of heat transfer processes using the single-phase method with laminar and turbulent flow of heat transfer fluids in a smooth absorbing tube and a tube with a spiral turbulator wire. Pure water and a water-based nanofluid with Al2O3 nanoparticles with a volume concentration of 1 % are used as the heat transfer fluid. The size of Al2O3 nanoparticles is 50 nm. The research analyses the effect of using a spiral wire turbulator in a solar collector in combination with a nanofluid as a heat transfer fluid on the temperature distribution in the absorption tube.
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