Utilização da ferramenta Systems Analysis do software Revit na etiquetagem de edificações de acordo com a INI-C

Abstract

This work was developed aiming to analyze the conditions for using the Revit “Systems Analysis” tool, to carry out energy simulations based on models designed in Revit, applying the simulation’s method from the building labeling procedure, according to the Inmetro’s new normative instruction (INI-C). The methodology adopted was based on exploratory case studies to assess the potentialities and limitations of the tool. The exploratory studies were divided into three test stages: performance simulations; geometric simulations; labeling simulations. In the performance simulations, cases 600 and 610 of ASHRAE Standard 140 were tested. It was possible to identify that Revit has two export modes that directly impact the energy model’s creation: “Rooms or Spaces” and “Building Elements”. The thermal properties of the materials and the component layers were correctly exported to the energy simulation program in both modes. However, problems were found in the creation and application of the schedules and in the sunlit fractions in the shaded windows. These problems were corrected in EnergyPlus (version 9.1) and Sketchup 2020, through the Euclid plug-in (version 0.9.4.1). After these corrections, the thermal load results obtained were compatible with what was expected, with a variation between 1.5% and 2.8% for the total thermal loads of case 600 and 2.6% and 2, 9% for the case 610. In the geometric simulations, 18 constructive complexities adapted from the Research Project 1810, financed by ASHRAE to improve the interoperability between BIM (Building Information Modeling) and BEM (Building Energy Modeling) programs. In the end, 83.33% of the cases had their geometry correctly exported by Revit considering the two tested export modes. Finally, the labeling of four buildings was carried out, three commercial typologies for the envelope labeling, and one educational typology, which was simulated for the general label. After correcting the schedules and the air intake data, in EnergyPlus, and the “activation” of the shading device, in Sketchup, the models created by “Systems Analysis” presented results compatible with what was expected and all models obtained the same label, with a difference in the percentages of thermal load reduction of less than 2.46%. Considering the tests carried out, it was concluded that it is still not possible to directly use the simulation performed via “Systems Analysis” for labeling purposes by INI-C, without first making some corrections. However, the corrections are very simple and there are solutions for most geometric interoperability problems found, indicating that the tool can be considered a technological advance and a possibility of optimization in the simulation labeling process.