Secondary Skin Parametric Simulation on BIM-based Building Models for Building Energy Optimization
Erwin Yuniar Rahadian (a*), Nur Laela Latifah (a), Fajar Ikhwan Harnomo (b), Zakly Ibrahim Indraputra (a

a) Department of Architecture, Institut Teknologi Nasional Bandung (Itenas)
Jl. P.H.H. Mustofa No 23 Bandung, 40124, Indonesia
*ears[at]itenas.ac.id
b) Department of Architecture, Faletehan University
Jl. Parakan Resik No.2, Batununggal, Bandung, 40266, Indonesia

Abstract

The current building design is required to meet energy-saving criteria when operated. For this reason, it is very important to limit the external thermal load from solar heat radiation that enters through the skin of the building, one solution is through the application of a secondary skin. This study aims to find an alternative optimal facade design related to openings in the building facade protected by secondary skin to achieve energy savings in building operations, including air conditioning systems and artificial lighting. Secondary skin design analysis is carried out based on the theoretical basis of thermal comfort and experimental parametric simulations on building facade models based on Building Information Modeling while still paying attention to the aesthetic aspects of the building. The independent variable includes the secondary skin design, while the fixed variable is the building skin design, which consists of openings and massive walls. This experiment used ArchiCAD^s BIM software, as well as Rhino and Grasshopper for parametric simulation of secondary skin models and analysis of building energy optimization, using secondary climate and weather data. The benefits obtained are input in the design process based on the influence between the pattern and the density of the secondary skin on the building^s operational energy consumption.

Keywords: building information modelling, operational energy, parametric, secondary skin

Topic: Digital Modeling, simulation and fabrication