PSI - Issue 55

152 William Silva Duran Lopes et al. / Procedia Structural Integrity 55 (2024) 151–159 2 William Silva Duran Lopes, Douglas Barreto, Inês Flores-Colen / Structural Integrity Procedia 00 (2019) 000 – 000

resulted in an Overall Energy Efficiency Rating B. As a contribution for EFFICACY Project, some guidelines to be considered for buildings rehabilitation will be stated, as simulation of thermal insulation in facades and others improvements. © 2024 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the ESICC 2023 Organizers Keywords: Energy Efficiency; Energy Labelling; Procel-EDIFICA; RTQ-C; WebPrescritivo; PROJETEE 1. Introduction In Brazil, buildings are responsible for the consumption of 48% of electricity in the country, in addition most of the energy is used by the commercial sector (90% of electricity use), with little participation from other sources (BOERGSTEIN, LAMBERTS, 2014). Therefore public sector is responsible for a large part of Brazilian energy consumption. The consumption of this sector in 2010 was 36,919 GWh, according to data from the Ministry of Mines and Energy, in addition it increased consumption by more than 25% when compared to 2003. According to PROCEL, technical and managerial measures, low investment would be enough to reduce energy costs in the public sector by 15% to 20% (MME, 2021). In Brazil, there are already guidelines that regulate the processes of determining energy efficiency and energy conservation since the 1980s, called Procel (ISSA, BRIANTI, ZUCCHI, 2020). In 2003 the Procel Edifica program was implemented and in 2005 the Technical Requirements for the Quality of the Level of Energy Efficiency of Commercial, Service and Public Buildings (RTQ-C) and the Technical Regulation for the Quality of the Level of Energy Efficiency of Residential Buildings were established (RTQ-R). Both establishing the requirements, parameters, and methods for evaluating a building (ELETROBRAS, 2013). The objective of this article is to present in detail the process of determining the level of energy efficiency, in accordance with the RTQ-C, in the case study of the Community Library of the Federal University of São Carlos, and based on this level of energy efficiency, propose actions that result better energy performance of the building. Considering that the thermal insulation of external wall coverings contributes significantly to improving the energy performance of buildings, this article is also a contribution to the EEA Financing Project (EFFICACY, 2023), which aims to develop guidelines to systematize relevant criteria for solutions thermal insulation in existing buildings, in rehabilitation and/or in new constructions. 2. Labelling The PBE Edifica label, , developed in partnership between Inmetro and Eletrobras/PROCEL Edifica (ELETROBRAS, 2013). evaluates and classifies the energy performance of buildings as a whole In Brazil, manuals that detail and organize topics related to the building labeling stage are the following: • Technical Quality Regulation for the Energy Efficiency Level of Commercial, Service and Public Buildings (RTQ-C ) and • Technical Quality Regulation for the Level Energy Efficiency of Residential Buildings (RTQ-R); The RTQ-C, like the RTQ-R, brings concepts and definitions, in addition to presenting procedures to establish the levels of energy efficiency in buildings (ELETROBRAS, 2013). At the end of the labeling process, the building obtains a label with a classification ranging from A (maximum factor – most efficient) to E (minimum factor – least efficient). The labelling can be applied in two circumstances: design stage; and in existing building. Evaluation of efficiency level can be carried out by the following methods: • prescriptive method: surveys of a set of characteristics of the building and, through calculations, it can be obtained the partial level of efficiency for building envelope, lighting, air conditioning systems, and the overall building; © 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the ESICC 2023 Organizers