Multi-Energy School System for Seasonal Use in the Mediterranean Area

Antonino D’Amico, Domenico Panno, Giuseppina Ciulla and Antonio Messineo
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Antonino D’Amico: Department of Engineering, University of Palermo, Viale delle Scienze, Building n. 9, 90128 Palermo, Italy
Domenico Panno: Department of Engineering, University of Palermo, Viale delle Scienze, Building n. 9, 90128 Palermo, Italy
Giuseppina Ciulla: Department of Engineering, University of Palermo, Viale delle Scienze, Building n. 9, 90128 Palermo, Italy
Antonio Messineo: Faculty of Engineering and Architecture, Kore University of Enna, Cittadella Universitaria, 94100 Enna, Italy

Sustainability, 2020, vol. 12, issue 20, 1-27

Abstract: School buildings represent an energy-consuming sector of real estate where different efficiency actions are necessary. The literature shows how the design of a multi-energy system offers numerous advantages, however, there are problems related to the integration of cogeneration units with renewable energy sources due to the low flexibility of the first one and the high degree of uncertainty of the latter. The authors provide an alternative solution through the analysis of a case study consisting of a multiple energy system in three Sicilian schools, focusing on the system’s operational strategy, on the design and sizing of components and trying to exploit the energy needs complementarity of buildings instead of integrating the conventional energy storage systems. Not considering school activities in summer, it was decided to install a cogeneration unit sized on winter thermal loads, whereas the electricity demand not covered was reduced with photovoltaic systems designed to maximize production for seasonal use and with loads concentrated in the morning hours. The effectiveness of this idea, which can be replicated for similar users and areas, is proved by a payback time of less than 11 years and a reduction of 31.77% of the CO 2 emissions.

Keywords: multi-energy system; school building; energy district; CHP system; PV system; dynamic simulation; economic analysis (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
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