BIM for Energy Analysis

This chapter addresses BIM in the context of energy demand calculation and building performance simulation. The focus is on different methods to identify the energy demand as well as on building services engineering, including references to the respective standards and calculation bases. We will present data exchange formats that can be used to exchange and to model the energy-related specifications of buildings and its systems and installations – and we will discuss the necessary requirements and definitions regarding the aspects of geometry, zoning, as well as semantics. The chapter also briefly discusses the current state of software-support for HVAC engineering calculations and dimensioning. Furthermore, we focus on the process chain for the use of BIM in the scope of energy demand calculation and simulation, including a brief discussion of the corresponding Model View Definitions of the Industry Foundation Classes. The chapter closes with an outlook on current research and development projects.