BIM2Modelica - An open source toolchain for generating and simulating thermal multi-zone building models by using structured data from BIM models

Nytsch‐Geusen, Christoph; Rädler, Jörg; Thorade, Matthis; Tugores, Carles Ribas

doi:10.3384/ecp1915733

Cited by 4 publications

(3 citation statements)

References 3 publications

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“…These space boundaries describe the virtual heat-transmitting surfaces in-between thermal zones and the building's surroundings, considering adjacent thermal zones and building constructions. While some studies discuss methods for generating second-level space boundaries for building simulation [33][34][35][36][37][38][39] or directly integrate space boundary generation methods in their IFC-based BPS approaches [39][40][41], other studies rely on the IFC4 schema-conform definition of space boundaries for the (semi-)automatic generation of BPS models [9,[42][43][44][45]. To be able to rely on the quality of provided space boundaries, a validation and/or a correction process may need to be applied, as proposed by Ying and Lee [29], Richter et al [30].…”

Section: Ifc-based Bpsmentioning

confidence: 99%

Extending the IFC-Based bim2sim Framework to Improve the Accessibility of Thermal Comfort Analysis Considering Future Climate Scenarios

Richter,

Syndicus,

Frisch

et al. 2023

Applied Sciences

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Future weather scenarios significantly affect indoor thermal comfort, influencing people’s well-being and productivity at work. Thus, future weather scenarios should be considered in the design phase to improve a building’s climate change resilience for new constructions as well as renovations in building stock. As thermal comfort is highly influenced by internal and external thermal loads resulting from weather conditions and building usage, only a dynamic building performance simulation (BPS) can predict the boundary conditions for a thermal comfort analysis during the design stage. As the model setup for a BPS requires detailed information about building geometry, materials, and usage, recent research activities have tried to derive the required simulation models from the open BIM (Building Information Modeling) Standard IFC (Industry Foundation Classes). However, even if IFC data are available, they are often faulty or incomplete. We propose a template-based enrichment of the BPS models that assists with imputing missing data based on archetypal usage of thermal zones. These templates are available for standardized enrichment of BPS models but do not include the required parameters for thermal comfort analysis. This study presents an approach for IFC-based thermal comfort analysis and a set of zone-usage-based templates to enrich thermal comfort input parameters.

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Section: Ifc-based Bpsmentioning

confidence: 99%

Extending the IFC-Based bim2sim Framework to Improve the Accessibility of Thermal Comfort Analysis Considering Future Climate Scenarios

Richter,

Syndicus,

Frisch

et al. 2023

Applied Sciences

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“…The idea of using data models from digital design and, in particular, BIM data is not new. Especially in the field of thermal building simulation, there are already various approaches to avoid redundancy in the double modeling of planning and simulation models [3][4][5][6][7]. In the area of hydraulic-focussed energy simulations or Heating, Ventilation and Air Conditioning (HVAC) simulation in general, the number of existing approaches is smaller.…”

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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“…There are even toolchains that already exist that automatically generate and parameterize Modelica models with BIM data (c.f. Nytsch-Geusen et. al., 2019).…”

Section: Process Integrationmentioning

confidence: 99%

Modelica Models as Integral Part of the Building Design Process

Schwan¹,

Wicke²,

Hentschel³

et al. 2021

Linköping Electronic Conference Proceedings

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The design process of buildings and energy supply systems consists of several steps with increasing accuracy and decreasing fault tolerance. Because of a wide range of unknowns and increasing complexity, Modelica models are often an integral part of the first design steps. However, there are only rare updates and reuse of these models in later phases and/or during building use.This paper emphasizes the potential of a continuous update and use of available Modelica models during all steps of building design processes. It therefore regards an example of a research greenhouse building for which the initially developed Modelica models were continuously updated and reused during the final phase of intensive scientific monitoring. Furthermore, general insights in latest scientific approaches indicate suitable steps of partly-automated continuous model updates during the whole building life span using BIM (Building Information Modeling).

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BIM2Modelica - An open source toolchain for generating and simulating thermal multi-zone building models by using structured data from BIM models

Cited by 4 publications

References 3 publications

Extending the IFC-Based bim2sim Framework to Improve the Accessibility of Thermal Comfort Analysis Considering Future Climate Scenarios

Extending the IFC-Based bim2sim Framework to Improve the Accessibility of Thermal Comfort Analysis Considering Future Climate Scenarios

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

Modelica Models as Integral Part of the Building Design Process

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