Title: BIM4BEMS Model Design
This report provides an analysis and evaluation of the current state of data exchange in the Architecture, Engineering, and Construction (AEC) industry in conjunction with the ongoing proliferation of the Building Information Modelling (BIM) approach. Shortcomings and gaps are identified and documented in the form of Use Cases. Also, an overall system architecture with a semantic data model at its heart is advised and broadly specified.
The goal of Building Information Modeling for Building Energy Management Systems (BIM4BEMS) is to investigate how BIM can be leveraged to increase the operational phase of building regarding energy consumption and comfort. Improved performance is achieved by combining space information and building automation data. Therefore the focus is to bridge any existing gaps in the information exchange between planning data of different trades and enable semantic linkage between them and the operational data (e.g., building automation system, meter readings, etc.).
Knowledge about the state-of-the-art in data exchange between different stakeholders in the AEC industry has been built up by analyzing existing national and international standards, popular software solutions and frameworks. Further, qualitative interviews have been conducted with people working in focal points of the operational phase of a building (e.g., energy management, facility management, planners, etc.). Especially the interviews enabled further insights into the utilization of data exchange capabilities and their practical use. The combined findings allowed then the identification of gaps in the current information flow and possibilities for improved (visual) reporting and decision-making processes. The analyses led to the definition of several use cases which document the found gaps and opportunities for increased performance in managing buildings operation.
A first system architecture has been defined, enabling advanced visual reporting which augments existing Building Energy Managment Systems (BEMS) based on the found use cases. Further, a first version of the semantic information model has been defined by merging two popular ontologies tailored to the building operation phase. The semantic information model will be continuously enhanced and reevaluated throughout the project due to its importance to the overall system architecture.