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Modelling of the Thermal Performance of SGSP using COMSOL Multiphysics

Anagnostopoulos, A, Campbell, Alasdair and Arellano-Garcia, Harvey (2017) Modelling of the Thermal Performance of SGSP using COMSOL Multiphysics In: 27th European Symposium on Computer Aided Process Engineering – ESCAPE 27, Oct 1 - 5 2017, Barcelona, Spain.

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Abstract

Novel renewable energy sources are necessary to counter the current environmental crisis. The largest source of renewable energy is the sun. One possible application of solar energy is the harvesting and storage of low temperature thermal heat (< 100°C). A very promising technology that can harvest and store thermal energy is a solar pond. To assess the thermal performance of a solar pond, more accurate and reliable theoretical models need to be developed. The preponderance of models use empirical relationships with little justification. This work examines an existing 1D theoretical model and develops and validates a novel theoretical model in COMSOL Multiphysics in both 2- and 3-D. The new models were compared with experimental data from two different test sites, concerning mainly the temperature at the lower convective zone (LCZ) and the upper convective zone (UCZ). The 3D model was proven to be the most accurate with the 1D model being the least. Furthermore, the general radiative heat transfer equation, with an isotropic scattering phase function, solved using the discrete ordinates method was proven to give a satisfactory accuracy in terms of radiation in semi-transparent media.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
NameEmailORCID
Anagnostopoulos, A
Campbell, Alasdaira.n.campbell@surrey.ac.uk
Arellano-Garcia, Harveyh.arellano-garcia@surrey.ac.uk
Date : 9 November 2017
Identification Number : 10.1016/B978-0-444-63965-3.50431-1
Copyright Disclaimer : © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords : solar ponds; energy storage; numerical modelling
Depositing User : Melanie Hughes
Date Deposited : 22 Sep 2017 16:29
Last Modified : 17 Jan 2018 14:27
URI: http://epubs.surrey.ac.uk/id/eprint/842391

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