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Experimental Proof of Concept of a Pilot-Scale Thermochemical Storage Unit

Tescari, Stefania and Singh, Abhishek Kumar and de Oliveira, Lamark and Breuer, Stefan and Agrafiotis, Christos and Roeb, Martin and Sattler, Christian and Marcher, Johnny and Pagkoura, Chrysoula and Karagiannakis, Georgios and Konstandopoulos, Athanasios G. (2017) Experimental Proof of Concept of a Pilot-Scale Thermochemical Storage Unit. In: AIP Conference Proceedings, 1850, 090006-1. AIP. SOLARPACES 2016: International Conference on Concentrating Solar Power and Chemical Energy Systems, 11.-14. Okt. 2016, Abu Dhabi, UAE. DOI: 10.1063/1.4984455

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Abstract

The present study presents installation and operation of the first pilot scale thermal storage unit based on thermochemical redox-cycles. The reactive core is composed of a honeycomb ceramic substrate, coated with cobalt oxide. This concept, already analyzed and presented at lab-scale, is now implemented at a larger scale: a total of 280 kg of storage material including 90 kg of cobalt oxide. The storage block was implemented inside an existing solar facility and connected to the complete experimental set-up. This experimental set-up is presented, with focus on the measurement system and the possible improvement for a next campaign. Start-up and operation of the system is described during the first complete charge-discharge cycle. The effect of the chemical reaction on the stored capacity is clearly detected by analysis of the temperature distribution data obtained during the experiments. Furthermore two consecutive cycles Show no evident loss of reactivity inside the material. The system is cycled between 650°C and 1000°C. In this temperature range, the total energy stored was about 50 kWh, corresponding to an energy density of 630 kJ/kg. In conclusion, the concept feasibility was successfully shown, together with a first calculation on the system performance.

Item URL in elib:https://elib.dlr.de/112999/
Document Type:Conference or Workshop Item (Speech)
Title:Experimental Proof of Concept of a Pilot-Scale Thermochemical Storage Unit
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Tescari, StefaniaStefania.Tescari (at) dlr.deUNSPECIFIED
Singh, Abhishek KumarAbhishek.Singh (at) dlr.deUNSPECIFIED
de Oliveira, Lamarklamark.de-oliveira (at) dlr.deUNSPECIFIED
Breuer, StefanStefan.Breuer (at) dlr.deUNSPECIFIED
Agrafiotis, ChristosChristos.Agrafiotis (at) dlr.deUNSPECIFIED
Roeb, MartinMartin.Roeb (at) dlr.deUNSPECIFIED
Sattler, ChristianChristian.Sattler (at) dlr.dehttps://orcid.org/0000-0002-4314-1124
Marcher, Johnnyaptl, certh-cperiUNSPECIFIED
Pagkoura, Chrysoulaaptl, certh-cperiUNSPECIFIED
Karagiannakis, Georgiosaptl, certh-cperiUNSPECIFIED
Konstandopoulos, Athanasios G.certh/cperi aptlUNSPECIFIED
Date:September 2017
Journal or Publication Title:AIP Conference Proceedings
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:1850
DOI :10.1063/1.4984455
Page Range:090006-1
Publisher:AIP
Series Name:Conference Proceeding
Status:Published
Keywords:thermochemical storage, piloz plant, solar, solar powewr, csp, cst
Event Title:SOLARPACES 2016: International Conference on Concentrating Solar Power and Chemical Energy Systems
Event Location:Abu Dhabi, UAE
Event Type:international Conference
Event Dates:11.-14. Okt. 2016
Organizer:SolarPACES
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Solar Fuels
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Solar Fuels
Location: Jülich , Köln-Porz
Institutes and Institutions:Institute of Solar Research > Solar Chemical Engineering
Deposited By: Sattler, Prof. Dr. Christian
Deposited On:18 Dec 2017 11:12
Last Modified:18 Dec 2017 11:12

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