Publication
On differential temperature controller setpoint selection for active photovoltaic-thermal (PV-T) systems
| dc.contributor.author | Magalhães, Pedro | |
| dc.contributor.author | Martins, João F. | |
| dc.contributor.author | Joyce, A | |
| dc.date.accessioned | 2020-03-27T16:00:45Z | |
| dc.date.available | 2020-03-27T16:00:45Z | |
| dc.date.issued | 2019 | |
| dc.description.abstract | ABSTRACT: Active photovoltaic-thermal (PV-T) systems for solar heating and electricity generation are likely to employ the same differential temperature pump controllers as equivalent non-hybrid solar thermal (ST) systems. However, the typical controller setpoint selection methods for cost-effective and stable pump operation fail to consider the effect on photovoltaic (PV) electricity generation taking place in PV-T systems. Analytical relations for the same goals were derived to anticipate this influence using the steady-state Florschuetz PV-T collector model and compared with equivalent numerical methods relying on an extension of the Perers model designed to encompass PV-T collectors, namely by modelling electricity generation and the associated thermal performance reduction. Both methods indicate the minimum turn-on and turn-off setpoints for cost-effective and stable operation increase and decrease, respectively, relative to those for non-hybrid operation of PV-T systems or equivalent non-hybrid systems, and more so at higher irradiance levels, though the variations are shown not to be significant for a range of PV-T systems represented and can be reasoned to be inflated or of limited practical relevance. In conclusion, the effect of pump operation on electricity generation is not predicted to be a determining factor for differential temperature controller setpoint selection in PV-T systems. | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.citation | Magalhães, Pedro... [et.al.] - On differential temperature controller setpoint selection for active photovoltaic-thermal (PV-T) systems. In: European Journal of Sustainable Development Research, 2019, Vol. 3(1), article nº em0066 | pt_PT |
| dc.identifier.doi | 10.20897/ejosdr/3926 | pt_PT |
| dc.identifier.issn | 2542-4742 | |
| dc.identifier.uri | http://hdl.handle.net/10400.9/3209 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.publisher | Modestum | pt_PT |
| dc.relation.publisherversion | https://doi.org/10.20897/ejosdr/3926 | pt_PT |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt_PT |
| dc.subject | Solar energy | pt_PT |
| dc.subject | Solar heating | pt_PT |
| dc.subject | Photovoltaic systems | pt_PT |
| dc.subject | Thermal solar systems | pt_PT |
| dc.title | On differential temperature controller setpoint selection for active photovoltaic-thermal (PV-T) systems | pt_PT |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F76747%2F2011/PT | |
| oaire.citation.title | European Journal of Sustainable Development Research | pt_PT |
| oaire.citation.volume | 3 | pt_PT |
| oaire.fundingStream | SFRH | |
| person.familyName | Joyce | |
| person.givenName | António | |
| person.identifier.ciencia-id | 2115-31CB-2983 | |
| person.identifier.orcid | 0000-0003-1660-6982 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | article | pt_PT |
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