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Numerical simulation of heat transfer and fluid flow in a flat plate solar collector with TIM and ventilation channel
Kessentini, Hamdi; Capdevila Paramio, Roser; Lehmkuhl Barba, Oriol; Castro González, Jesús; Oliva Llena, Asensio
Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics; Universitat Politècnica de Catalunya. CTTC - Centre Tecnològic de la Transferència de Calor
Flat plate solar collector with plastic transparent insulation materials and ventilation channel as overheating protection system inserted between the absorber and the back insulation has been studied numerically. First, a general object-oriented unsteady model of this solar collector is developed and presented. It allows solving, in parallel way, every component separately and interacting with its neighbors to set the boundary conditions in every time step of the simulation. Every component can be simulated using its own mesh and the number of CPUs necessary (depending on the simulation level needed). Second, the numerical simulations of the fluid flow and heat transfer by natural convection in the bottom part (ventilation channel) and the upper part (air gap + TIM) of the collector are done separately. The simulation has taken into account the different operation modes of the channel (opened at high operation temperatures and closed in normal operations). A three dimensional parallel turbulent CFD model based on Large Eddy Simulation is used in the simulations. The obtained numerical results are validated with experimental and benchmark results found in the literature.
Peer Reviewed
Àrees temàtiques de la UPC::Física::Termodinàmica::Física de la transmissió de la calor
Àrees temàtiques de la UPC::Energies::Energia solar tèrmica
Heat -- Transmission
Solar thermal energy
Calor -- Transmissió
Energia tèrmica solar
Attribution-NonCommercial-NoDerivs 3.0 Spain

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