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Title:
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Three dimensional numerical simulations of combined conduction and radiation in transparent insulation material
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Author:
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Kessentini, Hamdi; Capdevila Paramio, Roser; Castro González, Jesús; Oliva Llena, Asensio
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics; Universitat Politècnica de Catalunya. CTTC - Centre Tecnològic de la Transferència de Calor |
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Abstract:
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A coupled radiative and conductive three dimensional numerical model of transparent insulation
material (TIM) is presented and the simulation results are compared with experimental results
found in the literature. Since the studied TIM structure has the form of honeycomb that consists
of a cellular array of repetitive nature, we considered a single isolated cell with opaque and
adiabatic walls. The combined radiation and conduction heat transfer across the isolated cell is
treated by solving the energy equation coupled to the radiative transfer equation (RTE). For the
resolution of the RTE, the Finite Volume Method is used. The boundary conditions for the
intensity of radiation are considered as diffusely emitting, specularly reflecting opaque surfaces.
The detailed simulation of the TIM cells allows to obtain simplified correlations of the heat
losses through the TIM that then will be introduced into a general model of flat plate solar
collector with TIM. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Energies::Energia solar tèrmica
-Solar thermal energy
-Heat--Transmission
-Energia tèrmica solar
-Calor -- Transmissió -- Simulació numèrica |
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Rights:
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Document type:
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Article - Published version
Conference Object |
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