79614 20200324135214.0 doi 10.1016/j.apenergy.2018.06.128 sideral 106705 ART-2018-106705 eng (orcid)0000-0002-9174-9820 Bailera, Manuel Universidad de Zaragoza Decision-making methodology for managing photovoltaic surplus electricity through Power to Gas: Combined heat and power in urban buildings 2018 Access copy available to the general public Unrestricted Power to Gas technology, which converts surplus electricity into synthetic methane, is a promising alternative to overcome the ¿uctuating behavior of renewable energies. Hybridization with oxy-fuel combustion provides the CO2 ¿ow required in the methanation process and allows supplying both heat and electricity, keeping the CO 2 in a closed loop. The complexity of these facilities makes their management a key factor to be economically viable. This work presents a decision-making methodology to size and manage a cogeneration system that combines solar photovoltaic, chemical storage through Power to Gas, and an oxy-fuel boiler. Up to 35 potential situations have been identi¿ed, depending on the surplus electricity, occupancy of the intermediate storages of hydrogen and synthetic methane, and thermal demand. For illustration purposes, the methodology has been applied to a case study in the building sector. Speci¿cally, a building with 270 kW of solar photovoltaic installed power is analyzed under nine energy scenarios. The calculated capacities of electrolysis vary from 65 kW to 96 kW with operating hours between 2184 and 2475 h. The percentage of methane stored in the gas grid varies from 0.0% (no injection) to 30.9%. The more favorable scenarios are those with the lowest demands, showing temporary displacements beyond the month between injection and utilization. info:eu-repo/grantAgreement/ES/MINECO-FEDER/ENE2016-76850-R info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 8.426 2018 ENGINEERING, CHEMICAL 5 / 138 = 0.036 2018 Q1 T1 ENERGY & FUELS 8 / 103 = 0.078 2018 Q1 T1 3.455 2018 Building and Construction 2018 Q1 Civil and Structural Engineering 2018 Q1 Energy (miscellaneous) 2018 Q1 Nuclear Energy and Engineering 2018 Q1 Fuel Technology 2018 Q1 Management, Monitoring, Policy and Law 2018 Q1 Mechanical Engineering 2018 Q1 Energy Engineering and Power Technology 2018 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion (orcid)0000-0001-9967-5806 Peña, Begoña Universidad de Zaragoza Lisbona, Pilar (orcid)0000-0001-7379-6159 Romeo, Luis M. Universidad de Zaragoza 5004 590 Universidad de Zaragoza Dpto. Ingeniería Mecánica Área Máquinas y Motores Térmi. 228 (2018), 1032-1045 Appl. energy Applied Energy 0306-2619 1632711 http://zaguan.unizar.es/record/79614/files/texto_completo.pdf Postprint 86401 http://zaguan.unizar.es/record/79614/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:79614 articulos driver 2020-03-24-10:01:34 ARTICLE