Multi-angled façade system for office building renovation

This paper presents an interdisciplinary study situated within the fields of architectural design and engineering, focusing on studying and analysing the potential of multi-angled façade systems in optimizing indoor climate and energy performance and in creating new architectural qualities when renovating office buildings. The architectural potential is presented with the help of AutoCAD software. The energy efficiency and indoor climate are investigated and evaluated by using correlational research and simulation research methods with the software IDA ICE. From a functional perspective, the multi-angled façade increases the area of the office room and provides more space. There are many potential aesthetic benefits provided by multi-angled façades such as improved optical and visual quality from inside the office room and the possibility for daylight penetration and a view to outside from one part of the facade while i another part might be blocked by a shading device. From outside, the solutions may provide an interesting façade with a more dynamic form. Different scenarios are simulated and the results show that the saving in total primary energy consumption (area weighted) from a multi-angled façade compared to a renovated flat façade varies between 4.9 and 6.5 kWh/(m2.year), depending on the orientation of the façade. The increase in the office room area, when renovated with a multi-angled façade, is by 19%, while the increase of the yearly primary energy consumption (not area weighted), is by 4.4% to 9.8%, depending on the orientation of the façade.