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Research data for the article: The inter-building effect (IBE) in evaluating building performance of renovation projects: The case of European cities
Daneshfar, Maryam; Hartmann, Timo
Typically, when evaluating building performance in renovation projects, the focus is on the building's characteristics without considering the impact of the surrounding urban context. However, numerous studies have shown that the Inter-Building Effect (IBE) can influence building performance and consumption substantially. This study aims to investigate how sensitive building performance is to the shading effect of neighboring buildings in the context of renovation projects. The study builds upon previous research and expands simplified urban block configurations to include randomly selected heights and distances of surrounding buildings in a 9-block network. The heating demand, peak load, and illuminance level in specific zones of the buildings are evaluated in two residential buildings in Gdynia and Berlin. The results demonstrate that IBE can have a significant impact on simulation outcomes, emphasizing the necessity of considering the effect of current and future urban developments in renovation projects. The simulations reveal a maximum annual increase of 8.7% in energy demand, a maximum increase of 11.7% in peak load, and a maximum decrease in daylight by 64.8%. Additionally, the study found that the IBE is more pronounced in high-rise buildings in terms of thermal demand and peak load and in low-rise buildings and the south-facing zone of a building, in terms of daylight. These findings can propose valuable insights for energy experts and designers to make informed, accurate, and realistic decisions when selecting renovation strategies and techniques. Based on these findings, the study proposes a workflow to integrate the IBE into renovation projects.
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