CITYBIT: CityGML Building Interpolation Tool for Energy Performance Simulations

Malhotra, Avichal; Raming, Simon; Frisch, Jérôme; Treeck, Christoph van

doi:10.35490/ec3.2021.148

Cited by 5 publications

(4 citation statements)

References 9 publications

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“…Using extensions such as the Energy ADE [74] and Utility Network ADE [75], the CityGML LoD2 models are used for building/district energy as well as network simulations. Different workflows, such as CityATB [156], GML Toolbox [157], CityDoctor [153], or Feature Manipulation Engine (FME) [158] and simulation environments, such as EnergyPlus [92], Modelica [141] with supporting libraries, facilitate the import of CityGML LoD2 models. Whilst gaining popularity in UBEM, the availability of open CityGML data is comparatively low [10,159,160].…”

Section: Discussionmentioning

confidence: 99%

“…Certain roof types such as dual-pent, gabled, etc., also require the information about roof height (defined as a bldg:roofHeight element in CityGML) from the user. The roof height refers to the minimum eaves height, which is the point where the external walls, if projected upwards, meet the lowest point of the upper surface of the roof [132,133]. If a user-provided roof type consists of a tilt, the orientation of the roof is also required.…”

Section: Upscaling Lod0 Modelsmentioning

confidence: 99%

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Open-Source Tool for Transforming CityGML Levels of Detail

et al. 2021

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Urban Building Energy Modelling (UBEM) requires adequate geometrical information to represent buildings in a 3D digital form. However, open data models usually lack essential information, such as building geometries, due to a lower granularity in available data. For heating demand simulations, this scarcity impacts the energy predictions and, thereby, questioning existing simulation workflows. In this paper, the authors present an open-source CityGML LoD Transformation (CityLDT) tool for upscaling or downscaling geometries of 3D spatial CityGML building models. With the current support of LoD0–2, this paper presents the adapted methodology and developed algorithms for transformations. Using the presented tool, the authors transform open CityGML datasets and conduct heating demand simulations in Modelica to validate the geometric processing of transformed building models.

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Section: Discussionmentioning

confidence: 99%

Section: Upscaling Lod0 Modelsmentioning

confidence: 99%

Open-Source Tool for Transforming CityGML Levels of Detail

et al. 2021

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“…In [43], the authors elaborate on the toolbox enabling extensive search over large CityGML data sets for energy simulations on a district level. The evaluation of Smart-Grid technology to predict energy consumption [44] and energy efficiency monitoring and control [45,46] illustrate possible approaches in energy simulations and management.…”

Section: Energy Simulations and Managementmentioning

confidence: 99%

Simulation-Based Engineering of Heterogeneous Collaborative Systems—A Novel Conceptual Framework

Perišić,

Perišić

2023

Sustainability

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We discuss the collaboration support of loosely coupled Smart Systems through configurable hyper-frameworks. Based on the system-of-systems (SoS) paradigm, in this article, we propose the model of a novel extendible conceptual framework with domain-specific moderation support for model-based simulations and the engineering of complex heterogeneous systems. The domain knowledge meta-model and corresponding management enterprise architecture enable the creation of template-based specializations. The proposed SoS conceptual framework meta-model represents an initial framework prototype that supports modeling, simulation, analysis, and utilization of dynamic architecting of heterogeneous SoS configurations. A Smart-Habitat concept encapsulating Smart-Area, Smart-City, Smart-Lot, Smart-Building, and Smart-Unit abstractions illustrate the frameworks’ applicability. The proposed SoS conceptual framework represents the initial conceptual support for modeling, simulation, analysis, and dynamic architecting of heterogeneous SoS configurations. We plan to refine the component architecture meta-model, specify a language workbench with Domain-Specific Orchestration Language support, and verify the configuration-based simulation manifest creation. These actions lead to the framework’s next stage, an operational framework (OF) instance, as a transitional artifact to the aimed software framework (SwF) counterpart.

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“…Figure 6 gives an overview of the buildings. The CityGML model is created using project-related information and CityBIT [109] since publicly available models do not yet exist.…”

Section: Lci Flow Allocationmentioning

confidence: 99%

On the Potential of District-Scale Life Cycle Assessments of Buildings

et al. 2023

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Climate neutrality goals in the building sector require a large-scale estimation of environmental impacts for various stakeholders. Life Cycle Assessment (LCA) is a viable method for this purpose. However, its high granularity, and subsequent data requirements and effort, hinder its propagation, and potential employment of Machine Learning (ML) applications on a larger scale. The presented paper outlines the current state of research and practice on district-scale building LCA in terms of standards, software and certifications, and data availability. For this matter, the authors present the development and application of two district-scale LCA tools, Teco and DisteLCA, to determine the Global Warming Potential (GWP) of three different residential districts. Both tools employ data based on (including, but not limited to) CityGML, TABULA, and ÖKOBAUDAT. The results indicate that DisteLCA’s granular approach leads to an overestimation of environmental impacts, which can be derived from the statistical approach to operational energy use and related emissions. While both tools lead to substantial time savings, Teco requires less manual effort. The linkage of the aforementioned data sources has proven laborious and could be alleviated with a common data framework. Furthermore, large-scale data analysis could substantially increase the viability of the presented approach.

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CITYBIT: CityGML Building Interpolation Tool for Energy Performance Simulations

Cited by 5 publications

References 9 publications

Open-Source Tool for Transforming CityGML Levels of Detail

Open-Source Tool for Transforming CityGML Levels of Detail

Simulation-Based Engineering of Heterogeneous Collaborative Systems—A Novel Conceptual Framework

On the Potential of District-Scale Life Cycle Assessments of Buildings

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