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Heat recovery concept for thermochemical processes using a solid heat transfer medium

Felinks, Jan and Brendelberger, Stefan and Roeb, Martin and Sattler, Christian and Pitz-Paal, Robert (2014) Heat recovery concept for thermochemical processes using a solid heat transfer medium. Applied Thermal Engineering, 73, pp. 1004-1011. Elsevier. DOI: 10.1016/j.applthermaleng.2014.08.036 ISSN 1359-4311

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Abstract

The solar to fuel efficiency of a thermochemical water or carbon dioxide splitting process based on redox reactions with metal oxides and driven by concentrated solar energy highly depends on the heat recovery of sensible heat from the redox material. Today, no system exists that recovers heat between two redox particles streams at a temperature of about 1400 �C without the risk of an undesired reoxidation of the particles. Furthermore, a counter-current principle is essential to reach satisfactorily high heat recovery rates. In this work, we introduce a new concept utilizing a solid heat transfer medium in the form of spheres for heat recovery from particles. The mixing of redox particle and heat transfer spheres leads to a high surface area and enables an improved heat transfer. An appropriate connection of multiple heat transfer stages allows a quasi-counter-current heat transfer principle. A performance model of the system determines the heat recovery rate to be reached by the system.

Item URL in elib:https://elib.dlr.de/90668/
Document Type:Article
Title:Heat recovery concept for thermochemical processes using a solid heat transfer medium
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Felinks, Janjan.felinks (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:23 August 2014
Journal or Publication Title:Applied Thermal Engineering
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:73
DOI :10.1016/j.applthermaleng.2014.08.036
Page Range:pp. 1004-1011
Publisher:Elsevier
ISSN:1359-4311
Status:Published
Keywords:Heat recovery Solid heat transfer medium Solar thermochemical fuel production Water splitting Carbon dioxide splitting Particleeparticle heat transfer Quasi-counter-current heat exchanger Redox cycle
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Systems (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Solar Process Technology (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Solare Verfahrenstechnik
Institute of Solar Research > Leitungsbereich SF KP
Deposited By: Sattler, Prof. Dr. Christian
Deposited On:23 Sep 2014 13:57
Last Modified:06 Sep 2019 15:16

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