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J. Reisinger, L. Donkor, S. Loncsek, I. Kovacic:
"BIM-Based Workflows For Building Energy Modelling - A Variant Study";
Vortrag: International Conference on Sustainable Materials, Systems and Structures (SMSS 2019) - Energy Efficient Building Design and Legislation, Rovinj, Kroatien (eingeladen); 20.03.2019 - 22.03.2019; in: "Proceedings of the International Conference on Sustainable Materials, Systems and Structures (SMSS 2019) - Energy Efficient Building Design and Legislation", RILEM Publications S.A.R.L., 128 (2019), ISBN: 978-2-35158-217-6; S. 229 - 236.

The AEC (Architecture, Engineering & Construction) industry counts to the most wasteful ones, thereby urgently needing improvement for achievement of sustainable built environment. Early design stages, where project is conceptualized, are of great importance for the future energy performance of buildings. Tools such as the Energy Performance Certificate (EPC) - a rating scheme to express the energy efficiency of a building during operation - are used for the rating of building performance. Building Information Modelling (BIM - as emerging digital design tool) coupled to EPC has the potential to serve as an early decision-making tool for building performance optimization. However, the interoperability of the software tools is still a challenging task, causing problems with data exchange, thus resulting in information losses. This paper presents a comparative study of different BIM to EPC workflow-variants, generated by applying three different BIM tools (ArchiCad, Revit and Allplan) for the same case study; thereby comparing the variation of the obtained EPC (ArchiPhysik) results. The process design, interoperability and the validation of the EPC results of the three variants were evaluated. Varying requirements regarding the Level of Detail between the BIM and the Building Energy Modelling (BEM) and the discrepancies in the EPC results were identified as main problems. Finally, through comparison of the various exchange combinations and identification of the potentials and deficits, suggestions for improving BIM-based workflows for energy modelling are proposed.

Building information modelling (BIM); Building Energy modelling (BEM); Energy performance certificate (EPC); Interoperability; Design process

https://publik.tuwien.ac.at/files/publik_286004.pdf