95452 20210902121725.0 doi 10.3390/en13184807 sideral 119253 ART-2020-119253 eng Pina, Eduardo Antonio Universidad de Zaragoza (orcid)0000-0001-8350-6485 Comparative analysis and design of a solar-based parabolic trough–orc cogeneration plant for a commercial center 2020 Access copy available to the general public Unrestricted This paper performs technical, economic and environmental feasibility analyses of two different solar cogeneration plants, consisting of a solar system (a parabolic trough collector field coupled with thermal energy storage), an Organic Rankine Cycle (ORC), and mechanical chillers, that should cover the electrical and cooling demands of a commercial center located in Zaragoza (Spain). System A is hybridized with an auxiliary biomass boiler that complements the solar system’s thermal production, providing a constant heat supply to the ORC, which operates at full load during the operating hours of the solar system. In contrast, system B is not hybridized with biomass, so the ORC is fully driven by the solar system, operating at partial load according to the solar resource availability. Both systems are connected to the electrical grid, allowing electricity purchases and sales when needed. The design procedure involves the sizing of the equipment as well as the modelling of the hourly behavior of each system throughout the year. The physical analysis is complemented by an economic assessment, which considers investment and variable costs, as well as an estimate of the significant environmental benefits of the proposed plants. The solar plants are compared to a conventional system in which all the electrical consumption is covered with electricity purchased from the grid. The costs of the electricity produced by systems A and B are estimated at 0.2030 EUR/kWh and 0.1458 EUR/kWh, which are about 49% and 7% higher than the electricity purchase price in Spain (0.1363 EUR/kWh). These results indicate that while none of the solar plants are presently competitive with the conventional system, system B (without biomass hybridization) is actually closer to economic feasibility in the short and medium term than system A (with biomass hybridization). info:eu-repo/grantAgreement/ES/DGA-FEDER/Construyendo Europa desde Aragón info:eu-repo/grantAgreement/ES/DGA/T55-17R info:eu-repo/grantAgreement/ES/MINECO/ENE2017-87711-R info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 3.004 2020 ENERGY & FUELS 70 / 114 = 0.614 2020 Q3 T2 0.597 2020 Control and Optimization 2020 Q2 Electrical and Electronic Engineering 2020 Q2 Renewable Energy, Sustainability and the Environment 2020 Q2 Energy Engineering and Power Technology 2020 Q2 Fuel Technology 2020 Q2 Energy (miscellaneous) 2020 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Serra, Luis M. Universidad de Zaragoza (orcid)0000-0002-5161-7209 Lozano, Miguel A. Universidad de Zaragoza (orcid)0000-0002-4411-9834 Hernández, Adrian Lázaro, Ana Universidad de Zaragoza (orcid)0000-0001-7360-4188 5004 590 Universidad de Zaragoza Dpto. Ingeniería Mecánica Área Máquinas y Motores Térmi. 13, 18 (2020), [29 pp.] ENERGIES Energies 1996-1073 1806228 http://zaguan.unizar.es/record/95452/files/texto_completo.pdf Versión publicada 456196 http://zaguan.unizar.es/record/95452/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:95452 articulos driver 2021-09-02-09:31:51 ARTICLE