The study describes a stand-alone photovoltaic system in which the storage is realized using electrolytichydrogen, converted into electricity in fuel cells. The aim of the research is the optimization of the sizingof the system elements chain (photovoltaic generator, electrolyzer, tank, fuel cell) with respect to theelectric load to fulfil.A positive annual balance between hydrogen production and consumption must be guaranteed;furthermore, energy production surplus that cannot be stored or converted into hydrogen due to bat-teries or tanks capacity limits must be avoided.The energetic analysis and that of hydrogen production and consumption have been carried out on anhourly basis using the HOMER software.The study shows that, being the load active in the evening and the system disconnected from the grid,excess energy cannot be exploited unless large tanks are used, if high gas pressures are to be avoided.Consequently, the system use in public areas or residential buildings, where visual impact generated bytanks is hardly acceptable and safety rules do not allow high gas pressures, is advisable only in grid-connected configurations. Such problems are by far reduced when a marked self consumptions is present.

Energetic and economic analysis of a stand alone PV system with hydrogen storage

Marino C.;Nucara A.;Pietrafesa M
;
2019

Abstract

The study describes a stand-alone photovoltaic system in which the storage is realized using electrolytichydrogen, converted into electricity in fuel cells. The aim of the research is the optimization of the sizingof the system elements chain (photovoltaic generator, electrolyzer, tank, fuel cell) with respect to theelectric load to fulfil.A positive annual balance between hydrogen production and consumption must be guaranteed;furthermore, energy production surplus that cannot be stored or converted into hydrogen due to bat-teries or tanks capacity limits must be avoided.The energetic analysis and that of hydrogen production and consumption have been carried out on anhourly basis using the HOMER software.The study shows that, being the load active in the evening and the system disconnected from the grid,excess energy cannot be exploited unless large tanks are used, if high gas pressures are to be avoided.Consequently, the system use in public areas or residential buildings, where visual impact generated bytanks is hardly acceptable and safety rules do not allow high gas pressures, is advisable only in grid-connected configurations. Such problems are by far reduced when a marked self consumptions is present.
File in questo prodotto:
File Dimensione Formato  
Marino_2019_RENE_Energetic_editor.pdf

non disponibili

Descrizione: Versione editoriale (PDF)
Tipologia: Versione Editoriale (PDF)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 4.15 MB
Formato Adobe PDF
4.15 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Marino_2019_RENE_Energetic_postprint.pdf

embargo fino al 23/04/2021

Descrizione: Post-print dell'autore
Tipologia: Documento in Post-print
Licenza: Creative commons
Dimensione 2.53 MB
Formato Adobe PDF
2.53 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.12318/896
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 38
  • ???jsp.display-item.citation.isi??? 31
social impact