Experimental Test Setup of an Airwall to Reduce the Convective Heat Loss in Solar Thermal Cavity Receivers
DOI:
https://doi.org/10.52825/solarpaces.v1i.638Keywords:
Central Receiver, Heat Loss, Air Curtain, Airwall, ConvectionAbstract
An experimental setup is presented which allows to experimentally determine the thermal heat losses from a heated solar cavity receiver with an airwall. The setup is a ‘near-full-scale’ replica of a receiver, which ensures that the characteristic fluid dynamic numbers are in a range relevant for practical industrial applications. The executed tests show that – at ideal configuration – the airwall can reduce the overall thermal losses by 7±2%. The reduction of the convective losses amounts to 32±11%, which is in line with the known predictions from CFD simulations.
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Copyright (c) 2023 Moritz Bitterling, Gregor Bern, Hannes Fugmann, Martin Karl, Christopher Cohnen, Thomas Sonnabend, Thomas Fluri
This work is licensed under a Creative Commons Attribution 4.0 International License.
