The energy renovation of the Italian school building stock represents a strategic challenge within the energy transition process, as a large share of school buildings constructed between the 1970s and 1980s is characterized by low-performance envelopes and outdated systems. This study develops a methodological approach aimed at identifying priority retrofit actions through the integration of energy, thermo-hygrometric and economic assessments. The analysis was carried out through dynamic simulations on representative school building models, considering the most recurrent building shapes and three Italian climatic zones (C, D, E). Several Elementary Renovative Actions (ERAs) were examined, evaluating their effectiveness in terms of economic sustainability, primary energy savings and ability to ensure thermal comfort within indoor environments. Particular attention was paid to the influence of climate, surface-to volume ratio (S/V) and classroom orientation, comparing spaces with different exposures under varying natural ventilation conditions. The results show that the effectiveness of retrofit strategies cannot be generalized, as it strongly depends on climatic and geometric context. The study demonstrates the need for an integrated approach to school renovation, capable of balancing energy efficiency, indoor environmental quality and economic sustainability.
La riqualificazione energetica del patrimonio scolastico italiano rappresenta una sfida strategica nel processo di transizione energetica, in quanto gran parte degli edifici scolastici, realizzati tra gli anni Settanta e Ottanta, presenta involucri poco performanti ed impianti obsoleti. Il presente lavoro sviluppa un approccio metodologico finalizzato all’individuazione delle azioni di retrofit a cui attribuire priorità, integrando valutazioni energetiche, termoigrometriche ed economiche. L’analisi è stata condotta mediante simulazioni dinamiche su modelli rappresentativi di edifici scolastici, considerando le forme edilizie più ricorrenti e tre zone climatiche italiane (C, D, E). Sono state analizzate diverse Elementary Renovative Actions (ERAs), valutandone l’efficacia in termini di sostenibilità economica, risparmio di energia primaria e capacità di garantire il comfort termico all’interno degli ambienti. Particolare attenzione è stata rivolta all’influenza del clima, del rapporto S/V e dell’orientamento degli ambienti, confrontando aule con esposizione differente e condizioni di ventilazione naturale variabili. I risultati evidenziano come l’efficacia delle strategie di intervento non sia generalizzabile, ma fortemente dipendente dal contesto climatico e geometrico. Lo studio dimostra la necessità di un approccio integrato alla riqualificazione scolastica, capace di bilanciare efficienza energetica, qualità ambientale interna e sostenibilità economica.
Valutazione comparativa di scenari di riqualificazione energetica per il patrimonio scolastico italiano
De Simone, Francesca
2024/2025
Abstract
The energy renovation of the Italian school building stock represents a strategic challenge within the energy transition process, as a large share of school buildings constructed between the 1970s and 1980s is characterized by low-performance envelopes and outdated systems. This study develops a methodological approach aimed at identifying priority retrofit actions through the integration of energy, thermo-hygrometric and economic assessments. The analysis was carried out through dynamic simulations on representative school building models, considering the most recurrent building shapes and three Italian climatic zones (C, D, E). Several Elementary Renovative Actions (ERAs) were examined, evaluating their effectiveness in terms of economic sustainability, primary energy savings and ability to ensure thermal comfort within indoor environments. Particular attention was paid to the influence of climate, surface-to volume ratio (S/V) and classroom orientation, comparing spaces with different exposures under varying natural ventilation conditions. The results show that the effectiveness of retrofit strategies cannot be generalized, as it strongly depends on climatic and geometric context. The study demonstrates the need for an integrated approach to school renovation, capable of balancing energy efficiency, indoor environmental quality and economic sustainability.| File | Dimensione | Formato | |
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2026_03_De Simone.pdf
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https://hdl.handle.net/10589/252930