Modelling Urban Housing Stocks for Building Energy Simulation using CityGML EnergyADE

31 Mar 2019

We have a new article on urban energy simulation accepted for publication in the ISPRS International Journal of Geo-Information (IJGI). Using the Open Geospatial Consortium CityGML EnergyADE schema as the central data model, the paper describes the creation of urban scenes from standard UK map and energy survey datasets. Simulation of these scenes to estimate residential building energy demand is undertaken using CitySim+ - an improved, CityGML EnergyADE compliant, version of the spatially-explicit urban simulation software, CitySim. Further details are available in paper. The full abstract is below.

Understanding the energy demand of a city’s housing stock is an important focus for local and national administrations to identify strategies for reducing carbon emissions. Building energy simulation offers a promising approach to understand energy use and test plans to improve the efficiency of residential properties. As part of this, models of the urban stock must be created that accurately reflect its size, shape and composition. However, substantial effort is required in order to generate detailed urban scenes with the appropriate level of attribution suitable for spatially explicit simulation of large areas. Furthermore, the computational complexity of microsimulation of building energy necessitates consideration of approaches that reduce this processing overhead. We present a workflow to automatically generate 2.5D urban scenes for residential building energy simulation from UK mapping datasets. We describe modelling the geometry, the assignment of energy characteristics based upon a statistical model and adopt the CityGML EnergyADE schema which forms an important new and open standard for defining energy model information at the city-scale. We then demonstrate use of the resulting urban scenes for estimating heating demand using a spatially explicit building energy microsimulation tool, called CitySim+, and evaluate the effects of an off-the-shelf geometric simplification routine to reduce simulation computational complexity.

Journal article link: https://www.mdpi.com/2220-9964/8/4/163