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Experimental results of a 10 kW high temperature thermochemical storage reactor based on calcium hydroxide

Schmidt, Matthias and Szczukowski, Christoph and Roßkopf, Christian and Linder, Marc and Wörner, Antje (2013) Experimental results of a 10 kW high temperature thermochemical storage reactor based on calcium hydroxide. Applied Thermal Engineering (62), pp. 553-559. Elsevier. doi: 10.1016/j.applthermaleng.2013.09.020. ISSN 1359-4311.


Official URL: http://www.sciencedirect.com/science/article/pii/S1359431113006546


One promising possibility to store thermal energy is by means of reversible gas solid reactions. In this context, the endothermal dehydration of calcium hydroxide (Ca(OH)2) to calcium oxide (CaO) is a well known, cycle stable reaction able to store heat at temperatures above 410 �C and pressures above 0.1 bar. Additionally, the storage material itself is a widely available low cost raw material which allows for low cost thermal energy storage capacities. Therefore, a multifunctional test bench for thermochemical storage reactors has been developed and set into operation. Simultaneously an indirect operated reactor for w20 kg Ca(OH)2 was designed, manufactured and integrated into the test bench. Within this work the charge and discharge characteristics of the reactor concerning possible limitations due to heat and mass transfer were studied experimentally. Thereby, the possibility to store and release the heat of reaction at an adjustable temperature level was demonstrated in a technical relevant scale. The storage material remained stable and showed no degradation effects after ten cycles

Item URL in elib:https://elib.dlr.de/85589/
Document Type:Article
Title:Experimental results of a 10 kW high temperature thermochemical storage reactor based on calcium hydroxide
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Schmidt, Matthiasmatthias.schmidt (at) dlr.deUNSPECIFIED
Szczukowski, Christophchristoph.Szczukowski (at) dlr.deUNSPECIFIED
Roßkopf, Christianchristian.rosskopf (at) dlr.deUNSPECIFIED
Linder, Marcmarc.linder (at) dlr.deUNSPECIFIED
Wörner, Antjeantje.wörner (at) dlr.deUNSPECIFIED
Date:October 2013
Journal or Publication Title:Applied Thermal Engineering
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.applthermaleng.2013.09.020
Page Range:pp. 553-559
Keywords:Thermochemical heat storage High temperature Gasesolid reaction Calcium hydroxide Calcium oxide Pilot plant
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion and Use (old)
HGF - Program Themes:Energy-efficient Processes (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Thermochemische Prozesse (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Schmidt, Dr. Matthias
Deposited On:02 Dec 2013 10:23
Last Modified:06 Sep 2019 15:16

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