A5023018105- Building Energy and Comfort Optimization
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Modeling and Simulation Systems
- Crystallography and molecular interactions
- 3D Modeling in Geospatial Applications
- Wind and Air Flow Studies
- Physics and Engineering Research Articles
- BIM and Construction Integration
- Engineering and Materials Science Studies
- Simulation Techniques and Applications
- Renewable Energy and Sustainability
- Organometallic Compounds Synthesis and Characterization
- Integrated Energy Systems Optimization
- Phase Change Materials Research
- Real-time simulation and control systems
- Organophosphorus compounds synthesis
- Geothermal Energy Systems and Applications
- Modeling, Simulation, and Optimization
- Refrigeration and Air Conditioning Technologies
- Energy Efficiency and Management
- Chemical Synthesis and Characterization
- Smart Grid Energy Management
- CO2 Sequestration and Geologic Interactions
- Urban Heat Island Mitigation
RWTH Aachen University
2014-2021
Institute for Resource Efficiency and Energy Strategies
2019-2020
University of Stuttgart
1998-1999
The energy supply of buildings in urban contexts is undergoing significant changes. increase renewable sources for electrical and thermal generation will require flexible secure systems. To reflect consider these changes systems buildings, dynamic simulation one key element. Sparse limited access to detailed building information as well computing time are challenges on urban-scale. In addition, data acquisition modelling performance (BPS) time-consuming error-prone. enable the use BPS...
This paper describes the collaborative development of Annex 60 Modelica library, a free, open-source library for building and community energy systems.The is developed within project that conducted under umbrella International Energy Agency's in Buildings Communities Programme (IEA EBC).Our goal to develop distribute well documented, vetted validated serves as core future simulation programs can be integrated with existing well.The work brings together experts applications coordinates...
No widely applicable open information model standard exists until now for large-scale Urban Energy Modelling. Although different data models have been developed urban energy tools, they do not offer possibilities of interoperability and exchange between the stakeholders, tools expert fields. To address this issue, an international group simulation developers users is developing since May 2014 Application Domain Extension (ADE) CityGML. This paper introduces ADE tested by group. Goals,...
The current climate and environmental policy efforts require comprehensive planning regarding the upgrade of energy supply infrastructures in cities. Planning comprises e.g. determination locations for new power generating facilities like photovoltaic, geothermal decentralized combined heat stations, widespread introduction e-mobility solutions hence grid development as well large-scale energetic building refurbishments. A holistic approach integrating extensive complex information is...
For the comparison; we set-up three test cases on a generic room and single family dwelling analysed surface temperatures; heat demands simulation times. The results favoured an outdoor radiation exchange model according to German Guideline VDI 6007 with modified parameter calculations. It includes important simplifications that lead short computing time while keeping sufficient accuracy. indoor modelling at constant linear approach significantly reduces without any major accuracy losses.
The International Energy Agency’s in Buildings and Communities Programme (IEA-EBC) coordinates development of BPS Modelica the project "Computational Tools for Building Community Systems", also known as Annex 60.
Building energy systems are complex because of their nonlinear behaviour and stochastic environmental interactions. Thus, efficiency depends on both component design control strategy. Aiming for high efficiencies over the whole lifecycle, we apply Product Lifecycle Management Digital Twin Design to HVAC systems, initially using an recovery ventilation (ERV) simulation model. We develop a Prototype in Modelica ERV unit predict physical system behaviour. Verifying functionality suitability,...
In the context of district energy systems, changes in a building's heat demand also affect efficiency whole heating network. We present an integral dynamic model network branch with three buildings. By comparing simulations reference case and retrofit scenario we show that reducing buildings' demands reduces mass flow rate branch. discuss effects this reduction on deduce district-level system perspective can lead to more comprehensive evaluations efforts.
ABSTRACTUrbanization causes increasing energy demand within cites. To identify savingpotentials on city district scale, integral planning approaches are necessary. This paperdescribes the development of a information model (CIM) with focus buildingsand systems. It accounts for di erent building and system types plusgeometry, physics as well occupant information. The CIM structure has beenimplemented PostgreSQL database (DB), which been linked to geographicinformation (GIS) enable graphical...
Low order building models (LOM) implemented in state-of-the art modeling languages like Modelica allow for simulations with reduced computational effort but have a dynamic behavior. The library AixLib includes LOM urban scale simulations. This paper verifies the using ASHRAE Standard 140 to evaluate impact of low approach. model is within range standard except few outliers free floating temperature test cases. are related dynamics and an acceptable context focusing on heat load predictions.
Phase change materials (PCMs) can be integrated into envelopes of buildings to reduce peak loads. However, this integration requires mathematical modeling PCMs and whole buildings, which is essential for the optimal design material selection. There are currently few tools building performance simulation (BPS) with comprehensively verified validated PCM models. This study presents procedure verification validation models developed in Modelica using approach interpreted ASHRAE Standard 140....
The availability of input data and appropriate computing times are two major challenges when simulating entire city districts. For dynamic heat demand simulations, we contribute to these tasks by developing an integral tool chain. To reduce the amount data, automatically create typical datasets building setups for office buildings according their year construction basic geometric data. We use parameterize a model. simplified model is based on common German standard with adapted handling...