Electrical driven pyrolysis reactor retrofit for indirect concentrated solar heat

Azevedo, Pedro; Costa, Paula

Publication

Electrical driven pyrolysis reactor retrofit for indirect concentrated solar heat

2024-05Journal article

dc.contributor.author	Azevedo, Pedro
dc.contributor.author	Costa, Paula
dc.date.accessioned	2024-05-17T15:59:10Z
dc.date.available	2024-05-17T15:59:10Z
dc.date.issued	2024-05
dc.description.abstract	ABSTRACT: Aiming for a climate-neutral economy, and the associated transition towards fuels produced from alternative feedstock, and to overcome some biomass pyrolysis unsuitable properties for the conventional combustion devices, plastics pyrolysis also produces oils, whose main compounds are also hydrocarbons, that can be used in conventional engines without so complex and costly upgrading processes. Most of the chemical reactions found in a pyrolysis process are endothermal thus, to fulfill that energy demand, the retrofit of a 4 kW electrical furnace pyrolysis reactor to indirect solar driven energy was assessed aiming to adapt it to a central receiver solar tower with up to 100 kWth-peak, using air as heat transfer fluid. The heat demand along a typical pyrolysis test was experimentally assessed and a heat transfer mathematical model was defined to address the working constraints of the reactor. Additional analysis considering new design parameters were performed, namely sensitive analysis to the length of the new heating coil and its overall heat transfer coefficient, the reactor temperature set point, the inlet and outlet (to the atmosphere) gas temperature and working mass flow rates and temperatures were found to provide the same heat demand and minimize the waste heat. Considering both the heat source facility and the reactor constraints, it was found that the retrofit is possible providing that the product of surface area by the overall heat transfer coefficient (A·U) yields more than 17.7 W/K, for a reactor temperature set point of 450 °C and a maximum temperature inlet of 700 °C.	pt_PT
dc.description.version	info:eu-repo/semantics/publishedVersion	pt_PT
dc.identifier.citation	Azevedo, P. & Costa, P. (2024) Electrical driven pyrolysis reactor retrofit for indirect concentrated solar heat. In: Thermal Science and Engineering Progress, 2024, vol. 50, article nº 102524. https://doi.org/10.1016/j.tsep.2024.102524	pt_PT
dc.identifier.doi	10.1016/j.tsep.2024.102524	pt_PT
dc.identifier.issn	2451-9049
dc.identifier.uri	http://hdl.handle.net/10400.9/4297
dc.language.iso	eng	pt_PT
dc.peerreviewed	yes	pt_PT
dc.publisher	Elsevier	pt_PT
dc.relation	ALT20-03-0145-FEDER-022113	pt_PT
dc.relation.publisherversion	https://doi.org/10.1016/j.tsep.2024.102524	pt_PT
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	pt_PT
dc.subject	Concentrating solar thermal	pt_PT
dc.subject	Bio-oils production	pt_PT
dc.subject	Pyrolysis reactor	pt_PT
dc.subject	Retrofit measures	pt_PT
dc.subject	Design parameters	pt_PT
dc.title	Electrical driven pyrolysis reactor retrofit for indirect concentrated solar heat	pt_PT
dc.type	journal article
dspace.entity.type	Publication
oaire.citation.title	Thermal Science and Engineering Progress	pt_PT
oaire.citation.volume	50	pt_PT
person.familyName	Azevedo
person.familyName	Costa
person.givenName	Pedro
person.givenName	Paula
person.identifier.ciencia-id	8014-C811-3E1F
person.identifier.ciencia-id	2A1B-0AB6-B0FB
person.identifier.orcid	0000-0002-3829-2948
person.identifier.orcid	0000-0003-2024-4267
person.identifier.rid	P-6395-2015
rcaap.rights	openAccess	pt_PT
rcaap.type	article	pt_PT
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