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Numerical investigations of advanced volumetric reseiver materials

Smirnova, Olena and Fend , Thomas and Petrer, Schwarzbözl and Georg, Bleiber and Daniel , Schöllgen and Christoph, Jacob (2011) Numerical investigations of advanced volumetric reseiver materials. In: SolarPACES 2011 Proceedings. SolarPACES 2011, 20.-23. Sept. 2011, Spanien, Granada.

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Abstract

This paper presents the results of a numerical analysis of the mass transport and the heat flow through a volumetric solar receiver as a candidate component for a central receiver system for solar electricity generation. The receiver investigated was an extruded honeycomb structure made out of Silicon carbide. The objective of the study is to investigate the influence of slight geometric changes on to the overall performance of the receiver. The results are compared with those of an experimental study. Two numerical models have been developed. One makes use of the real geometry of the channel (single channel model), the other one considers the receiver to be “porous continuum”, which described with homogenized properties such as permeability and effective heat conductivity. The experimental parameters such as average solar heat flux and mass flow were taken into account in the models as boundary conditions. Various parameters such as the average air outlet temperatures, the temperature distributions and the solar-to-thermal efficiency were used for the comparison. The good correspondence between the experimental and numeric results of the both numeric investigations confirms the usefulness of the approach for further studies.

Document Type:Conference or Workshop Item (Paper, Poster)
Title:Numerical investigations of advanced volumetric reseiver materials
Authors:
AuthorsInstitution or Email of Authors
Smirnova, Olenaolena.smirnova@dlr.de
Fend , Thomasthomas.fend@dlr.de
Petrer, Schwarzbözlpeter.schwarzbözl
Georg, BleiberSF
Daniel , SchöllgenSF
Christoph, JacobSF
Date:20 September 2011
Journal or Publication Title:SolarPACES 2011 Proceedings
Refereed publication:Yes
Status:Published
Keywords:Volumetric solar receiver; volumetric heat transfer coefficient; solar tower technology
Event Title:SolarPACES 2011
Event Location:Spanien, Granada
Event Type:international Conference
Event Dates:20.-23. Sept. 2011
Organizer:CIEMAT
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:E SF - Solar research (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Applikationsentwicklung (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research
Deposited By: Olena Smirnova
Deposited On:12 Dec 2011 11:49
Last Modified:19 Jul 2013 15:14

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