Proposição de modelo para retrocomissionamento de edificações públicas, com vistas à melhoria de desempenho, em especial energético

Abstract

Investments in energy efficiency have been a priority in many countries, as well in Brazil, where several actions have been taken to promote it. The search for energy efficiency in public buildings has a fundamental role as a public policy, in addition to meeting the numerous laws, decrees applicable to public buildings and ministerial initiatives that aim the rationalization of energy resources consumption in public buildings. . Retrofit is a mechanism for modernizing and updating buildings, aiming to make them contemporary, in addition to prolong their useful life, comfort and functionality, through the incorporation of technological advances and the use of innovative materials. The first step in the building upgrade process is Retrocommissioning (RCx), which is a process that clarifies the interactions between all energy flows in a building, as well as producing a systematic method for planning upgrades. The main objective of this work is to propose the insertion of the Retrocommissioning Process, as an integral part of the management of public buildings, especially the existing ones, seeking to support decision-making about the necessary interventions aimed at improving their performance. The research method used was Design Science Research, and it was divided into five stages. The Awareness stage included data collection on the topics of RCx and Energy Efficiency of Buildings. The Suggestion stage sought to identify gaps and demands in the panorama of Energy Efficiency Practices in the Brazilian scenario and, through a Narrative Literature Review, describe the RCx models raised in the previous stage to seek opportunities to insert the process. The Development stage consisted in the elaboration of two case studies, one at Health Department and the other at Teaching Hospital, both located in a city in the south of Rio Grande do Sul, and moreover, a preliminary model for RCx of public buildings. In the Evaluation stage, case studies were analyzed, the preliminary model was validated and the possibilities of inserting the CRx Model into existing practices were evaluated. In the Conclusion stage, the preliminary model was refined to propose a final Model for Retrocommissioning of existing public buildings. The insertion of the RCx model as an integral part of the management of existing public buildings is relevant, given that the process identifies opportunities for implementing energy efficiency measures, assists in the management of buildings and is characterized by being a tool to support decision-making, reducing obstacles that are present in building management in the public sphere.The RCx process is fundamental for the search or collection of information from the original projects of the enterprises for later monitoring of the improvements throughout the RCx process. Retrocommissioning is listed as an eficient and methodical process, which can effectively bring about improvements in the operation and performance of building systems.