An Approach for the Extension of OpenBIM MEP Models with Metadata Focusing on Different Use Cases

Hauer, Stefan; Bres, Aurelien; Partl, Rainer; Monsberger, Michael

doi:10.26868/25222708.2019.210932

Cited by 3 publications

(4 citation statements)

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“…As a result of such imperfections and BIM's focus on the geometric description of building elements, topological information remains insufficient for reuse in building energy simulation, systems modelling, or other O&M scenarios (Hauer et al (2019)). Therefore, extracting and reusing HVAC system topology requires tools to automate retrieving existing information about HVAC components from BIM and mechanisms to enable users to check and enrich them with missing semantic relationships.…”

Section: Figure 1: Bim Issues Examples: (A) Missing Connectivity Rela...mentioning

confidence: 99%

Semi-automated extraction of HVAC system topology from imperfect Building Information Models

Mavrokapnidis,

Lilis,

Katsigarakis

et al. 2023

Building Simulation Conference Proceedings

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Knowledge of the HVAC system topology is required in several design and operation activities, including setting up building energy simulation models, fault detection and control applications, and facility management tasks. In theory, we can use the geometric context captured in Building Information Models (BIM) to infer these topological relationships; in practice, these models are far from perfect, with modelling errors and omissions. The implication is that manual remodelling is required, which results in unnecessary and redundant work. This paper discusses first the data quality issues faced in real-world data transformation workflows. We propose a methodology for generating good-quality HVAC topological models from imperfect BIM models. Our method's core is a rule-based model-checking framework to identify missing elements. Once an issue is detected, a geometric-relationship enrichment tool is invoked to infer missing topological information. The proposed approach is tested in a real-world complex BIM model, and we discuss lessons learnt. Highlights• Used ontologies of the building domain to represent HVAC system topological information. • Developed a rule-based model checking mechanism to identify missing relationships. • Used geometric processing to enrich the models with such information.

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Section: Figure 1: Bim Issues Examples: (A) Missing Connectivity Rela...mentioning

confidence: 99%

Semi-automated extraction of HVAC system topology from imperfect Building Information Models

Mavrokapnidis,

Lilis,

Katsigarakis

et al. 2023

Building Simulation Conference Proceedings

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show abstract

“…The presented IFCtoIDF tool used EnergyPlus and the IFC2x2 standard, but the tool is not published. Hauer et al analyze the presentability of HVAC components in the IFC schema [10]. The most important findings are that the IFC schema even in version IFC 4 does not yet provide sufficient options to represent all relevant components of a HVAC system.…”

Section: Related Workmentioning

confidence: 99%

BIM2SIM for Hydraulic-Focussed Energy Simulations – Automatic Generation of Pre Parametrized Simulation Models

Jansen

Hering

Müller

2023

36th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 20

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The construction of energy-efficient buildings is one of the most important measures to reduce the impact of buildings on our environment. The dynamic simulation of the energy systems of these buildings can improve the design and performance and thus reduce the emissions that impact the environment. However, the process of creating models for dynamic simulations is time-consuming and error-prone. By using already existing digital models from the planning process the process of model generation can partially be automated. This paper presents the tool bim2sim and its underlying methodology for the application of automatic model generation for dynamic hydraulic energy system simulation with Modelica based in Building Information Modeling models with the open exchange format IFC. The tool is applied to the use case of an example energy system and a manual comparison modeling is performed for the energy system in Modelica. The comparison shows that automatic model generation saves a significant amount of time even for comparatively simple systems.

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“…To meet above requirements a universal concept was developed introduced by [8]. This concept was further developed within the scope of the project metaTGA and will be described in the following sections.…”

Section: Mep Bim Model Requirementsmentioning

confidence: 99%

“…On the one hand, one of the main reasons is, that current available standards for openBIM MEP models are not sufficient in terms of available information about which parameters need to be specified and provided [8]. Initia tives like bimobject 3 , MEPcontent 4 , BIM&CO 5 , NBS National BIM Library 6 etc.…”

Section: Introductionmentioning

confidence: 99%

metaTGA: a chance for BIM in the field of MEP

et al. 2020

Self Cite

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Das Forschungsprojekt metaTGA: eine Chance für BIM im Bereich der Technischen Gebäudeausrüstung Der Einsatz von Building Information Modeling (BIM) wird in der Bau‐ und Immobilienbranche immer mehr zum State‐of‐the‐Art. Heizung, Klimatechnik, Lüftung und Sanitär (HKLS), vor allem die Qualität der Planung, spielen dabei eine immer größere Rolle, sowohl für den Energieverbrauch als auch für den Komfort eines Gebäudes. Um dabei die Vorteile von BIM nutzen zu können, ist ein qualitativ hochwertiges Datenmodell erforderlich um sicherzustellen, dass alle notwendigen Informationen eines Gebäudes über den gesamten Lebenszyklus für die weitere Verwendung zur Verfügung stehen. Dahingehend bietet das österreichische Forschungsprojekt metaTGA Lösungen für hochqualitative Datenmodelle an und untersucht im vorliegenden Aufsatz folgende Themen bzw. Fragestellungen: Wie müssen leistungsstarke openBIM‐Modelle aussehen? Wie schauen die wichtigsten Entwicklungsschritte der Modellierung aus? Wie wird erstes Feedback aus BIM Demo‐Projekten berücksichtigt? Wie unterstützt metaTGA hinsichtlich Qualitätssteigerung in BIM Projekten?

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An Approach for the Extension of OpenBIM MEP Models with Metadata Focusing on Different Use Cases

Cited by 3 publications

References 0 publications

Semi-automated extraction of HVAC system topology from imperfect Building Information Models

Semi-automated extraction of HVAC system topology from imperfect Building Information Models

BIM2SIM for Hydraulic-Focussed Energy Simulations – Automatic Generation of Pre Parametrized Simulation Models

metaTGA: a chance for BIM in the field of MEP

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