Abstract
IntroductionThe benefits of Building Information Modelling (BIM) for the construction industry are already known and proved. One of the applications of BIM is to estimate buildings energy demand and foster the introduction of more efficient design alternatives. BIM creates information to support designers’ decision-making and to allow them to compare and select the best options, enhancing buildings energy efficiency. With the increasing use of BIM and energy simulation tools, there is a need to establish a common and valid procedure for buildings energy assessment.Material and MethodsBy carrying out a building simulation with BIM, this paper identifies and describes the fundamental stages and requirements to perform a reliable, concise and fast energy assessment. These guidelines will consider Autodesk Revit as a BIM platform to create and prepare the building 3D model.ResultsThe proposed guidelines cover all the required tasks for a BIM energy assessment, as the building modulation details and requirements, the software interoperability modes and restrictions and the comparison and selection of improvement measures. Inputs and advice are given regarding the use of some of the existing energy simulation BIM tools.ConclusionsWith the increasing number of studies addressing energy simulations with BIM, it is essential to define a set of requisites to precisely perform them. By identifying the minimum requirements and tasks, the proposed guidelines will support future studies in achieving more reliable and comparable results.The possibility to estimate and improve the energy demand of a building during the initial project stages allows for the opportunity to build high performance and more sustainable buildings. BIM capabilities might be an essential support to effectively improve the built environment energy efficiency and accomplish environmental goals.Grant SupportThe authors acknowledge the Portuguese Foundation for Science and Technology for its financial support for this study (Reference SFRH/BD/145735/2019).
Highlights
The benefits of Building Information Modelling (BIM) for the construction industry are already known and proved
With the increasing number of studies addressing energy simulations with BIM, it is essential to define a set of requisites to precisely perform them
The possibility to estimate and improve the energy demand of a building during the initial project stages allows for the opportunity to build high performance and more sustainable buildings
Summary
Facing the increasing concern about the environmental impacts, the society has been looking for more efficient and sustainable processes and buildings, since the relation between those impacts and the construction industry has already been accepted by the scientific community [1]. Gourlis and Kovacic [11] have assessed and optimised the energy performance of an industrial building by carrying out a set of energy simulations in EnergyPlus They argue that BEM approach is still not mature enough, requiring a significant amount of time, assumptions and remodelling [12,13]. Some researchers as Reeves et al [7], have already started to establish a common understating about BIM for energy analysis, but the focus was given on the selection and comparison of different BEM simulation tools and not on the simulation process itself. By describing the essential tasks and requirements to perform an energy analysis with BIM, this research provides specific know-how for designers to select and carry out a suitable and reliable assessment method to be applied during the design stage. The outcomes of this study can provide insights for the development of a common requirement for energy performance simulation analysis
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