Energy Requalification of “Raffaello” School in Pistoia

Abstract

In 2017, 46.5% of school buildings in Italy needed urgent maintenance regarding architectural usability and accessibility, but also concerning structural, energy, and environmental aspects. A total of 36% of the energy needs during the operational and management phase of the Italian school sector are required by secondary schools. The main objective of this paper is to propose an integrated (architectural, energy, and environmental) redevelopment for the “Raffaello” School in Pistoia (Italy), aimed at improving the environmental and technological system and decreasing the building’s primary energy demand. Here, for the sake of brevity, we will only deal explicitly with energy rehabilitation. The results show that the replacement of the artificial lighting system with LED lamps alone leads to a 45% decrease in primary energy demand.

Evaluation of the Cost-Optimal Method Applied to Existing Schools Considering PV System Optimization

“…If compared to interventions on the external envelope, this solution can ensure higher energy savings with a lower initial investment cost. Such a result is in line with the ones obtained in previous research; in that case [27], where the substitution of the artificial lighting system was assessed as the cost-effective solution [27].…”

“…The research followed a method made up by four phases, following the same procedural steps adopted in a previous similar work by the research group concerning [27] the same building type:…”

“…As in [27], the initial investment cost for materials was calculated recurring to Italian region price list [86], DEI price list of 2018 [87] and, in case of no available information, referring to producer's websites and references in the literature [45]. The cost of labor is included in the cost of components according to most of the price lists; when not available, the price of a specialized labor is considered for the calculation.…”

“…Since the studied facilities are characterized by two different structural and technological solutions, both widely spread in Italy for schools built in the 70-90 s period, the chosen interventions could be implemented on a larger building stock. One of these buildings was chosen also because it was constructed by the same company with the same structural and technological solution of another school that was previously studied [27]. Therefore, it is possible to make comparisons between the main results obtained [27].…”

“…One of these buildings was chosen also because it was constructed by the same company with the same structural and technological solution of another school that was previously studied [27]. Therefore, it is possible to make comparisons between the main results obtained [27].…”