Building energy simulations at urban scale based on standardized data models using a transparent enrichment process

Abstract

A fundamental problem to perform reliable energy simulation on urban level is that available data from statistics or cadastral agencies is not sufficient. To perform an energetic simulation based on such data, each simulation tool has its own strategies to enrich the data with missing, energy relevant information. In most cases, these enrichment mechanisms are not transparent for the user and the obtained results are strongly dependent on the used tool. The present paper describes a new approach to achieve more transparency in analysing the energetic performance of buildings on urban scale. Thereby a transparent enrichment process based on the standardized 3D city model CityGML and its energy-related extension (EnergyADE) is used. Basic concepts of this process and its implementation with two building energy simulation systems are described.