In order to comply to the ambitious targets of European Hydrogen Strategy, Member States will strongly encourage the deployment of Power-to-Gas (PtG) technologies. A significant fraction of produced green hydrogen will be injected into the existing natural gas networks, and the end-users will be served by Hydrogen enriched Natural Gas blends (H2NG). The aim of this paper is to analyse the H2NG effects on technical, economic and environmental parameters of hybrid energy systems for building refurbishment. Three hybrid energy systems for the existing plants replacement have been proposed, dynamically simulated and compared with the separate generation. Fuel supply has been simulated by varying the H2 volumetric fraction in a range between 0 and 20%vol. The H2NG blend employment will allow greater primary energy savings and avoided emissions. However, if the levelized cost of hydrogen (LCOH) due to electrolysis does not decrease, those benefits will be offset by a lower economic competitiveness.

H2NG environmental-energy-economic effects in hybrid energy systems for building refurbishment in future National Power to Gas scenarios / Pastore, Lorenzo Mario; Sforzini, Matteo; Lo Basso, Gianluigi; de Santoli, Livio. - In: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY. - ISSN 0360-3199. - (2021), pp. 1-13. [10.1016/j.ijhydene.2021.11.154]

H2NG environmental-energy-economic effects in hybrid energy systems for building refurbishment in future National Power to Gas scenarios

Pastore, Lorenzo Mario
Primo
;
Sforzini, Matteo;Lo Basso, Gianluigi;de Santoli, Livio
2021

Abstract

In order to comply to the ambitious targets of European Hydrogen Strategy, Member States will strongly encourage the deployment of Power-to-Gas (PtG) technologies. A significant fraction of produced green hydrogen will be injected into the existing natural gas networks, and the end-users will be served by Hydrogen enriched Natural Gas blends (H2NG). The aim of this paper is to analyse the H2NG effects on technical, economic and environmental parameters of hybrid energy systems for building refurbishment. Three hybrid energy systems for the existing plants replacement have been proposed, dynamically simulated and compared with the separate generation. Fuel supply has been simulated by varying the H2 volumetric fraction in a range between 0 and 20%vol. The H2NG blend employment will allow greater primary energy savings and avoided emissions. However, if the levelized cost of hydrogen (LCOH) due to electrolysis does not decrease, those benefits will be offset by a lower economic competitiveness.
File allegati a questo prodotto
File Dimensione Formato  
Pastore_H2NG_2021.pdf

solo gestori archivio

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 3.1 MB
Formato Adobe PDF
3.1 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

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/11573/1601272
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 8
  • ???jsp.display-item.citation.isi??? 3
social impact