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Particle–particle heat transfer coefficient in a binary packed bed of alumina and zirconia-ceria particles

Felinks, Jan and Richter, Sebastian and Lachmann, Bruno and Brendelberger, Stefan and Roeb, Martin and Sattler, Christian and Pitz-Paal, Robert (2016) Particle–particle heat transfer coefficient in a binary packed bed of alumina and zirconia-ceria particles. Applied Thermal Engineering, 101, pp. 101-111. Elsevier. doi: 10.1016/j.applthermaleng.2016.01.066. ISSN 1359-4311.

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Official URL: http://ac.els-cdn.com/S1359431116300163/1-s2.0-S1359431116300163-main.pdf?_tid=226cfdac-049e-11e6-a5b8-00000aacb360&acdnat=1460898971_3b60e64626dc70ed4e598a8b3cbda9fd


Solar thermochemical processes for fuel production require the incorporation of heat recovery Systems for substantial efficiency gains. A heat recovery concept for processes using a particulate redox material proposed by the authors utilizes a second particulate material as a solid heat transfer medium. This work is about the experimental investigation of the heat transfer between these two particle species in a binary packed bed. Experiments were performed at temperatures up to 250 °C regarding the influencing factors of contact time, mass ratio, average temperature, temperature difference and particle diameters. Design of experiments helped as a method to plan and analyze these experiments. In addition, the temperature dependent specific heat capacity, the density and the size of the investigated particles were experimentally analyzed. In order to consider heat losses to the experimental setup, a correction measurement campaign was undertaken. The results are in the form of a polynomial which predicts the heat transfer coefficient depending on its influencing factors. This polynomial was obtained by a stepwise linear regression method. Values between 90 and 260 W/m2 K are predicted for the given temperature range. In an alternative approach we characterized the heat transfer in terms of the temperature difference of one particle species.

Item URL in elib:https://elib.dlr.de/103985/
Document Type:Article
Title:Particle–particle heat transfer coefficient in a binary packed bed of alumina and zirconia-ceria particles
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Felinks, Janjan.felinks (at) dlr.dehttps://orcid.org/0000-0002-4314-1124
Richter, SebastianSebastian.Richter (at) dlr.deUNSPECIFIED
Lachmann, BrunoBruno.Lachmann (at) dlr.deUNSPECIFIED
Brendelberger, StefanStefan.Brendelberger (at) dlr.deUNSPECIFIED
Roeb, MartinMartin.Roeb (at) dlr.deUNSPECIFIED
Sattler, Christianchristian.sattler (at) dlr.deUNSPECIFIED
Pitz-Paal, RobertRobert.Pitz-Paal (at) dlr.deUNSPECIFIED
Date:11 March 2016
Journal or Publication Title:Applied Thermal Engineering
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.applthermaleng.2016.01.066
Page Range:pp. 101-111
Keywords:Heat transfer coefficient Particle–particle heat transfer Binary mixture Solid heat transfer medium Solar thermochemical fuel production Design of experiments
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Solar Fuels
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Solar Fuels (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Solare Verfahrenstechnik
Deposited By: Sattler, Prof. Dr. Christian
Deposited On:06 May 2016 11:17
Last Modified:06 Sep 2019 15:16

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