Paper Conference

Proceedings of Building Simulation 2011: 12th Conference of IBPSA


Modelling of Conduction Transfer Functions for Typical Thermal Bridges Identified in BIM Data

Piotr Narowski, Jacek Stasierski, Piotr Wereszczynski

Abstract: The Building Information Modelling (BIM) was introduced nearly ten years ago to distinguish the information rich architectural 3D modelling from the traditional 2D drawing. The BIM makes a reliable digital representation of the building available for design decision making, high-quality construction document production, construction planning, and performance predictions like building energy performance calculated by energy simulations programs. BIM involves representing a design as 3D objects, that carry their geometry, relations and properties and attributes. Because building models 3D objects are machine readable, it becomes practical to use data they bring in many ways. On the other hand whole building simulation programs still prefer to use the simplified, one-dimensional description of heat transfer through partitions of building envelope. This paper describes simple method that allows to model the conduction transfer functions for typical thermal bridges that can be found in every building. This development goal is to improve building energy calculation results obtained from dynamic simulations by incorporating thermal bridges CTFs correction factors into building simulation application that can automatically recognize thermal bridges in BIM data.
Pages: 1320 - 1327