On the Influence of Party Walls for Urban Energy Modelling

Abstract

Abstract. In the last 15 years semantic 3D city models have seen a steady growth in terms of creation and adoption. Many cities world-wide have now at least one city model which can be used for several applications. Energy- and sustainability-related topics are among those that have experienced a noteworthy increase of interest from the Geomatics community. 3D city models have become a steady component of Urban Energy Modelling, in which bottom-up approaches are developed to assess, for example, the energy efficiency of the building stock and to explore different scenarios of building refurbishment. Within this context, this paper focuses on investigating how much party walls can contribute to the energy demand estimation of a building. For this reason, two approaches to compute party walls are described and compared. The nature and the magnitude of their differences, as well as their possible impact on downstream applications, are considered in order to shed light on whether discrepancies in the amount of computed party wall area might lead to significant differences in terms energy demand of the residential building stock. The case study area is located in the Netherlands and encompasses the municipality of Rijssen-Holten.

Creation of a Citygml-Based 3d City Model Testbed for Energy-Related Applications

“…free-standing or adjacent to other buildings), expressed by means of the number of adjacent buildings • In case of adjacent building (parts); a list of IDs of the corresponding building (parts). For party walls (Agugiaro et al, 2022), geometries are split in surfaces between shared and not shared.…”

“…At the time of writing this document, there are already several use cases where this testbed has been used as input dataset. (Agugiaro et al, 2022) consumes the testbed for their computation of party walls.…”