Thermochemical energy storage system development utilising limestone

For renewable energy sources to replace fossil fuels, large scale energy storage is required and thermal batteries have been identified as a commercially viable option. In this study, a 3.2 kg prototype (0.82 kWhth) of the limestone-based CaCO3-Al2O3 (16.7 wt%) thermochemical energy storage system w...

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Autores principales:	Kasper T. Møller, Terry D. Humphries, Amanda Berger, Mark Paskevicius, Craig E. Buckley
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Thermochemical energy storage Limestone Energy storage setups Calcium-looping alternative Scale-up Thermal energy storage prototype Chemical engineering TP155-156
Acceso en línea:	https://doaj.org/article/6d39755860ab46de99d093ebb266f926
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spelling	oai:doaj.org-article:6d39755860ab46de99d093ebb266f9262021-11-18T04:53:00ZThermochemical energy storage system development utilising limestone2666-821110.1016/j.ceja.2021.100168https://doaj.org/article/6d39755860ab46de99d093ebb266f9262021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666821121000843https://doaj.org/toc/2666-8211For renewable energy sources to replace fossil fuels, large scale energy storage is required and thermal batteries have been identified as a commercially viable option. In this study, a 3.2 kg prototype (0.82 kWhth) of the limestone-based CaCO3-Al2O3 (16.7 wt%) thermochemical energy storage system was investigated near 900 °C in three different configurations: (i) CaCO3 was thermally cycled between 850 °C during carbonation and 950 °C during calcination whilst activated carbon was utilised as a CO2 gas storage material. (ii) The CaCO3 temperature was kept constant at 900 °C while utilising the activated carbon gas storage method to drive the thermochemical reaction. (iii) A mechanical gas compressor was used to compress CO2 into volumetric gas bottles to achieve a significant under/overpressure upon calcination/carbonation, i.e. ≤ 0.8 bar and > 5 bar, respectively, compared to the ∼1 bar thermodynamic equilibrium pressure at 900 °C. Scenarios (i) and (iii) showed a 64% energy capacity retention at the end of the 10th cycle. The decrease in capacity was partly assigned to the formation of mayenite, Ca12Al14O33, and thus the absence of the beneficial properties of the expected Ca5Al6O14 while sintering was also observed. The 316L stainless-steel reactor was investigated in regards to corrosion issues after being under CO2 atmosphere above 850 °C for approximately 1400 h, and showed no significant degradation. This study illustrates the potential for industrial scale up of catalysed CaCO3 as a thermal battery and provides a viable alternative to the calcium-looping process.Kasper T. MøllerTerry D. HumphriesAmanda BergerMark PaskeviciusCraig E. BuckleyElsevierarticleThermochemical energy storageLimestoneEnergy storage setupsCalcium-looping alternativeScale-upThermal energy storage prototypeChemical engineeringTP155-156ENChemical Engineering Journal Advances, Vol 8, Iss , Pp 100168- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Thermochemical energy storage Limestone Energy storage setups Calcium-looping alternative Scale-up Thermal energy storage prototype Chemical engineering TP155-156
spellingShingle	Thermochemical energy storage Limestone Energy storage setups Calcium-looping alternative Scale-up Thermal energy storage prototype Chemical engineering TP155-156 Kasper T. Møller Terry D. Humphries Amanda Berger Mark Paskevicius Craig E. Buckley Thermochemical energy storage system development utilising limestone
description	For renewable energy sources to replace fossil fuels, large scale energy storage is required and thermal batteries have been identified as a commercially viable option. In this study, a 3.2 kg prototype (0.82 kWhth) of the limestone-based CaCO3-Al2O3 (16.7 wt%) thermochemical energy storage system was investigated near 900 °C in three different configurations: (i) CaCO3 was thermally cycled between 850 °C during carbonation and 950 °C during calcination whilst activated carbon was utilised as a CO2 gas storage material. (ii) The CaCO3 temperature was kept constant at 900 °C while utilising the activated carbon gas storage method to drive the thermochemical reaction. (iii) A mechanical gas compressor was used to compress CO2 into volumetric gas bottles to achieve a significant under/overpressure upon calcination/carbonation, i.e. ≤ 0.8 bar and > 5 bar, respectively, compared to the ∼1 bar thermodynamic equilibrium pressure at 900 °C. Scenarios (i) and (iii) showed a 64% energy capacity retention at the end of the 10th cycle. The decrease in capacity was partly assigned to the formation of mayenite, Ca12Al14O33, and thus the absence of the beneficial properties of the expected Ca5Al6O14 while sintering was also observed. The 316L stainless-steel reactor was investigated in regards to corrosion issues after being under CO2 atmosphere above 850 °C for approximately 1400 h, and showed no significant degradation. This study illustrates the potential for industrial scale up of catalysed CaCO3 as a thermal battery and provides a viable alternative to the calcium-looping process.
format	article
author	Kasper T. Møller Terry D. Humphries Amanda Berger Mark Paskevicius Craig E. Buckley
author_facet	Kasper T. Møller Terry D. Humphries Amanda Berger Mark Paskevicius Craig E. Buckley
author_sort	Kasper T. Møller
title	Thermochemical energy storage system development utilising limestone
title_short	Thermochemical energy storage system development utilising limestone
title_full	Thermochemical energy storage system development utilising limestone
title_fullStr	Thermochemical energy storage system development utilising limestone
title_full_unstemmed	Thermochemical energy storage system development utilising limestone
title_sort	thermochemical energy storage system development utilising limestone
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/6d39755860ab46de99d093ebb266f926
work_keys_str_mv	AT kaspertmøller thermochemicalenergystoragesystemdevelopmentutilisinglimestone AT terrydhumphries thermochemicalenergystoragesystemdevelopmentutilisinglimestone AT amandaberger thermochemicalenergystoragesystemdevelopmentutilisinglimestone AT markpaskevicius thermochemicalenergystoragesystemdevelopmentutilisinglimestone AT craigebuckley thermochemicalenergystoragesystemdevelopmentutilisinglimestone
_version_	1718424980549533696

Thermochemical energy storage system development utilising limestone

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