The Modelica HouseModels Library: Presentation and Evaluation of a Room Model with the ASHRAE Standard 140

Constantin, Ana; Streblow, Rita; Müller, Dirk

doi:10.3384/ecp14096293

Cited by 15 publications

(14 citation statements)

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“…To evaluate the performance of the implemented control library and to examine its interoperability to existing Modelica libraries in the domain, we present results from two test cases implemented for demonstration purposes. In the first test case we implement an automation solution of a sunshade in a room using control function models from the package VDI3813 where we reuse a room model included in the AixLib-library (Constantin et al, 2014). In the second example we re-implement the state-based control of an Air Handling Unit from Buildings-library (Wetter et al, 2014) using the models provided in the VDI3814 package.…”

Section: Results From Test Casesmentioning

confidence: 99%

“…The usability of the models is demonstrated in two example applications linking a room automation solution to room models from AixLib-library (Constantin et al, 2014) and a state graph to control an air handling unit model from Buildings-library (Wetter et al, 2014).…”

Section: Resultsmentioning

confidence: 99%

“…1. Modular design such that control functionality is encapsulated and may be exchanged as needed; (Wetter et al, 2015), (2) -Buildings (Wetter et al, 2014), (3) -AixLib (Constantin et al, 2014), (4) -BuildingSystems (Nytsch-Geusen et al, 2013), (5) -IDEAS (Baetens et al, 2012), (6) NCLib (Liu, 2013), (7) -IndustrialAutomationSystems (Bonvini and Leva, 2012) and (8) -this work.…”

Section: Room Automation According To Vdi 3813mentioning

confidence: 99%

“…We implemented the described room automation solution using models from the previously described library. We couple it to a model which captures the physical behaviour of a room which we adapted from the model ASHRAE140.Case900FF from Constantin et al (2014). The boundary conditions (weather, internal gains, etc.)…”

Section: Room Automation According To Vdi 3813mentioning

confidence: 99%

“…A research effort from the International Energy Agency's Energy Buildings and Communities Programme (IEA EBC) develops as one outcome a core library for Building Performance Simulation (BPS) using Modelica. A set of four libraries, all suitable for MBD within the buildings domain, Buildings (Wetter et al, 2014), AixLib (Constantin et al, 2014) BuildingSystems (Nytsch-Geusen et al, 2013) and IDEAS (Baetens et al, 2012) now share one common core library Annex60 (Wetter et al, 2015). A special library NCLib for the simulation of automation systems is presented by Liu (2013), however its focus is on modelling automation system devices rather than the control logic involved.…”

Section: Introductionmentioning

confidence: 99%

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Modelling and Simulation of Standardised Control Functions from Building Automation

Schneider

Peßler

Steiger

2017

Linköping Electronic Conference Proceedings

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Despite the accepted fact that control logic deployed in future and existing buildings through building automation systems constitutes a key factor for increasing their energy efficiency, the support for modelling and simulation of these in current state-of-the-art simulation tools and libraries is rather limited. In particular a gap exists for modelling and simulation of standardised control functions. In this work we present an approach for modelling standardised control logic using Modelica. We evaluated the interoperability of the modelling approach by simulating a test case of an automation solution controlling the sunshade of a room and by reimplementing a state-based control for an air handling unit reusing models from two Annex60 compliant libraries.

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Section: Results From Test Casesmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Room Automation According To Vdi 3813mentioning

confidence: 99%

Section: Room Automation According To Vdi 3813mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modelling and Simulation of Standardised Control Functions from Building Automation

Schneider

Peßler

Steiger

2017

Linköping Electronic Conference Proceedings

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Comparison of annual performance factors of normatively designed heat pump systems

2021

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Heat pumps play a key role in decarbonizing the heat supply for buildings. To exploit heat pump's potential in a resource‐efficient way, high coefficients of performance (COP) are required. For air‐source heat pumps, the COP is subject to outside temperature, building dynamics, and user demands. To achieve high COPs, it is necessary to design heat pumps to meet the demands and to optimize operation in terms of COP. In this study, we compare design methods according to DIN EN 15450 and VDI Guideline 4645. Based on these, heat pump systems (heat pump, auxiliary heater and thermal storages) are designed for an example building, and a controller is set up. Following VDI Guideline 4650, an Annual Performance Factor (APF) is used for comparison on the basis of dynamic simulations. For the same building, the study proves both systems to ensure supply temperatures at APFs about 3.5 to 4. In order to achieve optimal APF, a consideration of operation already in the design should be suggested.

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An automated IFC-based workflow for building energy performance simulation with Modelica

Andriamamonjy

Sælens

Klein

2018

Automation in Construction

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Steadily increasing use of Building Information Modelling (BIM) in all phases of building's lifecycle, together with more attention for openBIM and growing software support for the most recent version of the Industry Foundation Classes (IFC 4) have created a very promising context for an even broader application of Building Energy Performance Simulation (BEPS). At the same time, an urgent need for modelling guidelines and standardisation becomes evident. A well-defined BIM-based workflow and a set of tools that fully exploit and extend the possibilities of the openBIM-technology can make the difference when it comes to reliability and cost of BEPS to design, build and operate high-performance buildings. This paper describes the essential elements of this integrated workflow, explains why openBIM comprises much more than just a standardized file-format and what is achieved with the already available technology, namely the Information Delivery Manual (IDM) and a newly developed Model View Definition. This MVD is tailored to the needs of Building Energy Performance Simulation (BEPS) that uses the Modelica language together with a specific library (IDEAS) and can easily be adapted to other libraries. In this project, several tools have been developed to closely integrate BEPS and IFC4. The simulation engine now gets the vast majority of the required input directly from the IFC4-file. For the implementation of the tools, the PYTHON language and the open source library IfcOpenShell are used. A case study is presented, that was used for extensive tests of the proposed approach and the implemented tools. The essential benefits of this new workflow are illustrated, and the feasibility is demonstrated. Opportunities and remaining bottlenecks are identified to encourage further development of BIM software to fully support IFC4 as an information source for BEPS. Beside some improvements of the proprietary class structure and functionality, enabling the export of IFC4 files based on custom MVDs is one required key feature.

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The Modelica HouseModels Library: Presentation and Evaluation of a Room Model with the ASHRAE Standard 140

Cited by 15 publications

References 4 publications

Modelling and Simulation of Standardised Control Functions from Building Automation

Modelling and Simulation of Standardised Control Functions from Building Automation

Comparison of annual performance factors of normatively designed heat pump systems

An automated IFC-based workflow for building energy performance simulation with Modelica

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