Comparison of the simplified and simulation methods proposed in the new Brazilian regulations for the labeling of public buildings

Abstract In 2018, a public consultation was held on the INMETRO Normative Instruction for Energy Efficiency Class for Commercial, Service and Public Buildings (INI-C), aimed at updating and replacing the Technical Quality Regulation for the Energy Efficiency Level of Buildings (RTQ-C). The aim of this paper is to compare the results obtained by applying the INI-C’s simplified and simulation methods in a Brazilian Army pavilion. The authors evaluated two simulation softwares (DesignBuilder and EnergyPlus), three types of roof modelling (according to the design, modelled as equivalent material with the same thermal properties as the design, and adiabatic), two types of weather files (“SWERA” and “INMET 2016”), and two types of objects for modelling the building's air conditioning system (“PTAC” and “IdealLoads”). On the whole, 52 scenarios were compared to each other. In all scenarios, the ENCE obtained was class “A”, but with differences in energy consumption. It was concluded that the results obtained by both INI-C methods are compatible, especially when using the weather file “SWERA”.

摘要：2018年，巴西国家计量、标准化与工业质量协会（INMETRO）针对商业、服务及公共建筑能效等级规范性指令（INI-C）开展公众咨询，旨在更新并替代《建筑能效等级技术质量规程》（RTQ-C）。本文旨在对比将INI-C的简化法与模拟法应用于巴西陆军某展馆后得到的研究结果。研究人员评估了两款模拟软件（DesignBuilder与EnergyPlus）、三种屋顶建模方式（按设计建模、采用与设计热物性一致的等效材料建模，以及绝热建模）、两类气象文件（"SWERA"与"INMET 2016"），以及两种用于建筑空调系统建模的对象类型（"PTAC"与"IdealLoads"）。总计共对比了52组模拟场景。所有场景下所得建筑能效等级（ENCE）均为"A"级，但能耗存在差异。研究结论显示，INI-C的两种方法所得结果具有良好的一致性，尤其在采用气象文件"SWERA"时，该一致性表现更为显著。