Improving the collaboration between architects and energy consultants through design-integrated early BIM-tools
Paper in proceeding, 2019

There is a lack of optimization of buildings towards energy performance in early design stages in practice. Interviews with architects and energy consultants showed that one reason is the inefficient communication between these two groups. This paper investigates how a design-integrated early-BIM tool can improve the relation between architects and energy consultants to support an optimization process in early design stages and facilitate issuing energy performance certificates. Two case studies show that the early-BIM tool provides meaningful results for the architects involved and can reduce the input time for energy consultants by 50%. Furthermore, the simple 3D model functions as boundary object between the two groups and supports the collaboration.


Alexander Hollberg

Chalmers, Architecture and Civil Engineering, Building Technology

Norman Klüber

Fraunhofer Institute for Microstructure of Materials and Systems IMWS

Matthias Götz

Götz Bilchev

Thomas Lichtenheld

Bauhaus-Universitat Weimar

Philipp Hollberg


Alina Galimshina

Swiss Federal Institute of Technology in Zürich (ETH)

Guillaume Habert

Swiss Federal Institute of Technology in Zürich (ETH)

Building Simulation Conference Proceedings

2522-2708 (ISSN)

Vol. 4 2627-2633

Building Simulation 2019
Rome, Italy,

Subject Categories

Architectural Engineering

Human Computer Interaction

Energy Systems

Areas of Advance

Building Futures (2010-2018)




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