Mathias Ehrenwirth

Mathias Ehrenwirth

Prof. Dr.-Ing.

Responsibilities

Professorship "Decentralised Energy Conversion Systems"

Curriculum vitae
03/2024 – today Professor, Faculty of Mechanical Engineering and Building Services Engineering / TH Nürnberg, Nürnberg
  • Practical teaching within the framework of decentralized energy conversion
  • Educating students in foundational engineering subjects   
  • Initiating and conducting research projects and promoting technology transfer to regional companies and organisations   
  • Participation in faculty / university self-administration   
  • Conceptual development of courses and creation of modern digital teaching concepts
10/2022 – 01/2024 Research Coordinator for Energy and Climate Technologies, Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V., München
  • Conception and coordination of energy research within the Fraunhofer-Gesellschaft in cooperation with the directorate of Research and the institute directors   
  • Management of overarching strategic projects on behalf of the executive board 
  • Communication and coordination between internal and external stakeholders within the energy sector and at Fraunhofer headquarters
  • Contribution to strategic decision papers and scientific information for the executive board
  • Supporting strategical and organisational development at institutes or cross-institutional structures
04.2018 – 09/2021 Head of Research Group Domestic Energy Systems, Institute of new Energy Systems (InES) / TH Ingolstadt, Ingolstadt
  • Operational management of the research group 'Domestic Energy Systems', professional and disciplinary responsibility for an international team of currently 15 researchers
  • Strategic orientation of research activities in key areas such as low-temperature district heat networks, heat pumps, off-grid systems, solar thermal collectors, thermal storage, e-mobility, and sector coupling"
  • Acquisition of industrial (approx. 180 Tsd. €)and publicly (approx. 2.3 Mio. €) funded research projects at national and international level
  • Technical and organisational coordination of the research group’s projects in collaboration with the professors / project leaders
  • Representative of the research group at national and international committees, scientific conferences and conventions
08/2013 – 03/2018 Research Associate, Institute of new Energy Systems (InES) / TH Ingolstadt, Ingolstadt
  • Independent and self-reliant conduction of research projects in the field of building energy and solar thermal technologies
  • Presentation of project results within internal and external meetings as well as international conferences
  • Support for the department and institute management in defining new research topics
  • Representative of the institute for all matters of its laboratories for building energy and solar thermal engineering
  • Supervision of thesis projects, student assistants, and international students
01/2012 – 06/2013 Development Engineer, enders Ingenieure GmbH, Ergolding
  • Independent execution of structural-mechanical, (electro-)thermal, and fluid dynamics numerical simulations using the tools ANSYS Workbench, ANSYS CFX and OpenFOAM
  • Direct collaboration and communication with clients during project work
  • Summarization of project results, their evaluation, and presentation in internal meetings and towards clients
11/2009 – 01/2012 Construction and Simulation Engineer, enders Ingenieure GmbH, Ergolding
  • Creation of components, assemblies, and drawings using CAD systems ProEngineer and Catia V5
  • Production-ready design and implementation of conceptual specifications in numerous projects, e.g., in plant construction and automotive technology 
  • Generation of documentations and presentations of project results

 

Awards
10/2021 University Prize of SEV Bayern
  Award of the dissertation by the Bavarian Association for the Promotion of Solar Energy
09/2017 – 10/2017 TUM Graduate School Internationalisation Support
  International funds enabeling a 4-week research stay at the Technical University of Denmark (DTU)
08/2014 – 07/2017 TUM Applied Technolgy Forum
  Doctoral scholarship for graduates from selected Bavarian Universities of Applied Sciences awared by the Munich School of Engineering (MSE)

 

Courses
  • Piping and Equipment Engineering
  • Practical Laboratory Course 'Metrology'
  • Renewable Energies and Storage
  • Sustainable Energy Technologies
  • Energy Efficiency and Alternative Energy Technologies
  • Simulation-Based Thermal System Design
Works

I am continuously searching for talented students interested in writing their bachelor's or master's thesis under my supervision. I am particularly interested in topics related to building energy supply, district concepts, (low-temperature) district heating networks, heat pumps, solar thermal collectors, thermal storage, e-mobility, sector coupling, off-grid systems, etc. Methodologically, I prefer projects that feature modeling and/or measurement components (e.g. by utilising MATLAB/Simulink, Dymola/Modelica, PolySun, LabVIEW, Python, etc.). You are warmly invited to share your ideas with me to jointly develop a topic for your thesis!

I am currently offering the subsequent topics:

Publications

Journal Papers (peer-reviewed)

[16] T. Summ, M. Oyinlola, S. Khattak, M. Ehrenwirth, C. Trinkl and W. Zörner. "Towards Maximum Cost-Effectiveness: Multi-Objective Design Optimisation of Insulating Glass Flat-Plate Collectors". In: Applied Thermal Engineering (2024). DOI: 10.1016/j.applthermaleng.2024.124594.
[15] A. Vannahme, M. Ehrenwirth and T. Schrag. "Development and Application of a Guideline for Assessing Optimization Potentials for District Heating Systems". In: Energy (2024). DOI: 10.1016/j.energy.2024.131226.
[14] A. Igiligi, A. Vielhauer, M. Ehrenwirth, C. Hurm, T. Summ, C. Trinkl and D. Navarro Gevers. "Assessment of Conservation Voltage Reduction in Distribution Networks with Voltage Regulating Distribution Transformers". In: Energies 16.7 (2023). DOI: 10.3390/en16073155.
[13] K. Mehta, M. Ehrenwirth, W. Zörner and R. Greenough. "Need of energy transition at roof of the world: Correlative approach to interpret energy identity of high-altitude Central Asian communities". In: Energy for Sustainable Development 76 (2023). DOI: 10.1016/j.esd.2023.101271.
[12] T. Summ, M. Ehrenwirth, C. Trinkl, W. Zörner, K. Pischow, R. Greenough and M. Oyinlola. "Effect of argon concentration on thermal efficiency of gas-filled insulating glass flat-plate collectors". In: Applied Thermal Engineering 230 (2023). DOI: 10.1016/j.applthermaleng.2023.120657.
[11] A. Vannahme, J. Busch, M. Ehrenwirth and T. Schrag. "Experimental Study of District Heating Substations in a Hardware-in-the-Loop Test Rig. (in press)". In: Resources 12.4 (2023). DOI: 10.3390/resources12040043.
[10] C. Bott, M. Ehrenwirth, C. Trinkl and P. Bayer. "Component-based modeling of groand-coupled seasonal thermal energy storages". In: Applied Thermal Engineering (2022). DOI: 10.1016/j.applthermaleng.2022.118810.
[9] K. Mehta, M. Ehrenwirth, C. Trinkl and W. Zörner. "Towards Sustainable Community Development through Renewable Energies in Kyrgyzstan: A Detailed Assessment and Outlook". In: World 3.2 (2022). DOI: 10.3390/world3020018.
[8] K. Mehta, M. Ehrenwirth and W. Zörner. "Mapping Potential for Improving Rural Energy Services in Kyrgyzstan: Factors for Achieving Sustainable Development Goals in the Community Context". In: World 3.3 (2022). DOI: 10.3390/world3030032.
[7] M. Werner, S. Muschik, M. Ehrenwirth, C. Trinkl and T. Schrag. "Sector Coupling Potential of A District Heating Network by Consideration of Residual Load and CO2 Emissions". In: Energies 15.17 (2022). DOI: 10.3390/en15176281.
[6] A. Bugaje, M. Ehrenwirth, C. Trinkl and W. Zörner. "Electric Two-Wheeler Vehicle Integration into Rural Off-Grid Photovoltaic System in Kenya". In: Energies 14.23 (2021). DOI: 10.3390/en14237956.
[5] A. Bugaje, M. Ehrenwirth, C. Trinkl and W. Zörner. "Investigating the Performance of Rural Off-Grid Photovoltaic System with Electric-Mobility Solutions: A Case Study Based on Kenya". In: Journal of Sustainable Development of Energy, Water and Environment Systems (2021). DOI: 10.13044/j.sdewes.d9.0391.
[4] K. Mehta, M. Ehrenwirth, S. Missall, N. Degembaeva, K. Akmatov and W. Zörner. "Energy Profiling of a High-Altitude Kyrgyz Community: Challenges and Motivations to Preserve Floodplain Ecosystems Based on Household Survey". In: Sustainability 13.23 (2021). DOI: 10.3390/su132313086.
[3] K. Mehta, M. Ehrenwirth, C. Trinkl, W. Zörner and R. Greenough. "The Energy Situation in Central Asia: A Comprehensive Energy Review Focusing on Rural Areas". In: Energies 14.10 (2021). DOI: 10.3390/en14102805.
[2] A. Vannahme, M. Ehrenwirth and T. Schrag. "Enhancement of a District Heating Substation as Part of a Low-Investment Optimization Strategy for District Heating Systems". In: Resources 10.5 (2021). DOI: 10.3390/resources10050053.
[1] M. Werner, M. Ehrenwirth, S. Muschik, C. Trinkl and T. Schrag. "Operational Experiences with a Temperature–Variable District Heating Network for a Rural Community". In: Chemical Engineering & Technology (2021). DOI: 10.1002/ceat.202100114.

Conference Proceedings (peer-reviewed)

[16] B. Lwakatare, K. Mehta, M. Ehrenwirth, W. Zörner, C. Trinkl, J. Katende, J. Shigwedha and H. Ileka. "Technical Feasibility Study of Micro-Grid Integration to Electrify Rural Settlements of Sub-Saharan Africa". In: EuroSun 2022 (Kassel). Ed. by International Solar Energy Society. Freiburg, 2022. DOI: 10.18086/eurosun.2022.18.09.
[15] K. Mehta, J. Beringer, M. Ehrenwirth, C. Trinkl and W. Zörner. "Sustainable Housing Insulation for High-altitude Kyrgyzstan: A Technical Guide". In: EuroSun 2022 (Kassel). Ed. by International Solar Energy Society. Freiburg, 2022. DOI: 10.18086/eurosun.2022.01.07.
[14] K. Mehta, B. Lwakatare, M. Ehrenwirth, C. Trinkl, W. Zörner, J. Katende, J. Shigwedha and H. Ileka. "Mini-Grid or Grid Extension? The Strategies for Electrification Schemes Concerning Population Density in Sub-Saharan Africa". In: EuroSun 2022 (Kassel). Ed. by International Solar Energy Society. Freiburg, 2022. DOI: 10.18086/eurosun.2022.18.10.
[13] T. Reum, T. Summ, M. Ehrenwirth and T. Schrag. "Experimental Investigation of a Novel Hybrid Heat Pump". In: EuroSun 2022 (Kassel). Ed. by International Solar Energy Society. Freiburg, 2022. DOI: 10.18086/eurosun.2022.08.11.
[12] T. Summ, M. Seiler, M. Ehrenwirth, C. Trinkl and W. Zörner. "Agri Solar Thermal Systems: A Brief Study on the Energetic Potential of Bifacial Solar Thermal Systems". In: EuroSun 2022 (Kassel). Ed. by International Solar Energy Society. Freiburg, 2022. DOI: 10.18086/eurosun.2022.12.16.
[11] J. Beringer, K. Mehta, M. Ehrenwirth, C. Trinkl and W. Zörner. "Performance comparison of different types of solar thermal collectors on residential space heating demand in high-altitude cold climatic environment: A simulation-based study". In: ISES Solar World Congress 2021 (online). Ed. by International Solar Energy Society. Freiburg, 2021. DOI: 10.18086/swc.2021.24.01.
[10] A. Bugaje, A. Yadav, K. Mehta, F. Ojinji, M. Ehrenwirth, C. Trinkl and W. Zörner. "Influence of Input Parameters on Artificial Neural Networks for Off-Grid Solar Photovoltaic Power Forecasting". In: Conference on Sustainable Energy Supply and Energy Storage Systems (Hamburg). Ed. by VDE. Berlin, 2021. URL: ieeexplore.ieee.org/document/9698257.
[9] S. Kühnel, T. Ahmed, K. Mehta, M. Ehrenwirth, R. Besner, K. Knepper, H. Ileka, C. Trinkl and W. Zörner. "Holistic approach to develop electricity load profiles for rural offgrid communities in sub-Saharan Africa". In: ISES Solar World Congress (online). Ed. by International Solar Energy Society. Freiburg, 2021. DOI: 10.18086/swc.2021.20.02.
[8] F. Quintana, K. Mehta, M. Ehrenwirth, W. Zörner, F. Betz, M. Lauermann, B. Cyffka and E. Baibagyshov. "In-Depth Assessment and Feasibility Study of a Solar PV Farm for a High-Altitude Region: Bridging the Gap Between Technical Potential and Market Barriers in Kyrgyzstan". In: ISES Solar World Congress (online). Ed. by International Solar Energy Society. Freiburg, 2021. DOI: 10.18086/swc.2021.21.01.
[7] T. Summ, M. Abdasalam, M. Ehrenwirth, C. Trinkl and W. Zörner. "A Detailed Investigation on the Convective Heat Transfer Inside the Enclosed Cavity of Insulated Glass Solar Thermal Flat-Plate Collectors". In: ISES Solar World Congress (online). Ed. by International Solar Energy Society. Freiburg, 2021. DOI: 10.18086/swc.2021.22.09.
[6] A. Bugaje, M. Ehrenwirth, C. Trinkl, K. Bär and W. Zörner. "Development of a Load Management Algorithm Using Nonlinear Programming (NLP) for Optimum Integration of Electric-Mobility Solutions into Rural Off-Grid PV Systems". In: Conference on Sustainable Energy Supply and Energy Storage Systems (Hamburg). Ed. by VDE. Berlin, 2020. URL: https://www.vde-verlag.de/proceedings-en/565359022.html.
[5] K. Mehta, M. Ehrenwirth, C. Trinkl, W. Zörner and R. Greenough. "A Parametric Study on the Feasibility of Solar-thermal Space Heating and Hot Water Preparation ander Cold Climates in Central Asian Rural Areas". In: EuroSun 2020 (online). Ed. by International Solar Energy Society. Freiburg, 2020. DOI: 10.18086/eurosun.2020.04.03.
[4] K. Mehta, M. Ehrenwirth, C. Trinkl, W. Zörner and R. Greenough. "Impact of Locally Available Thermal Insulation Structures on Space Heating Demand of High-altitude Rural Buildings: A Case Study of Kyrgyzstan". In: EuroSun 2020 (online). Ed. by International Solar Energy Society. Freiburg, 2020. DOI: 10.18086/eurosun.2020.04.04.
[3] D. Beckenbauer, M. Ehrenwirth, M. Klärner, W. Zörner and V. Cheng. "Validation of a District Heating System Model and Simulation-Based Investigation of Bidirectional Heat Transport by Decentralised Solar Thermal Plants". In: IEA SHC International Conference on Solar Heating and Cooling for Buildings and Industry (Abu Dhabi). Ed. by International Solar Energy Society. Freiburg, 2017. DOI: 10.18086/swc.2017.06.01.
[2] M. Ehrenwirth, D. Beckenbauer, M. Klärner, C. Trinkl, W. Zörner and V. Cheng. "Theoretical and experimental investigation of polymeric solar-thermal flat-plate collectors". In: IEA SHC International Conference on Solar Heating and Cooling for Buildings and Industry (Abu Dhabi). Ed. by International Solar Energy Society. Freiburg, 2017. DOI: 10.18086/swc.2017.07.01.
[1] M. Ehrenwirth, S. Brandmayr, C. Reiter, C. Trinkl and W. Zörner. "Analysis of Polymeric Solar-thermal Collectors in Drain Back Systems by Simulation". In: EuroSun 2014 (Aix-les-Bains). Ed. by International Solar Energy Society. Freiburg, 2014. DOI: 10.18086/eurosun.2014.16.05.

Conference Proceedings

[14] D. Klump, T. Summ, M. Ehrenwirth, C. Trinkl and W. Zörner. "Entwicklung einer optimierten Schichtungseinrichtung für Elektro-Direktheizungen in Wärmespeichern – Konzeptionelle Bewertung, Testaufbau and Bewertungsmethodik". In: 37. PV Symposium 2022 (Bad Staffelstein). Ed. by Conexio GmbH. Pforzheim, 2022.
[13] T. Braun, D. Beckenbauer, M. Ehrenwirth, C. Trinkl and W. Zörner. "Messtechnische Untersuchung dezentraler Solarthermieanlagen in einem Wärmenetz – Langzeiterfahrungen aus dem Projekt smartSOLgrid". In: 30. Symposium Thermische Solarenergie (Bad Staffelstein). Ed. by Conexio GmbH. Pforzheim, 2020.
[12] M. Lauermann, F. Betz, K. Mehta, N. Thevs, M. Ehrenwirth, W. Zörner and B. Cyffka. "Preservation of Selected Ecosystem Services in the Floodplains of the Naryn River (Kyrgyzstan): Introducing the ÖkoFlussPlan Project". In: Beiträge zum 50. and 51. Jahrestreffen des Arbeitskreises Hydrologie 2018 in Koblenz and 2019 (Heidelberg). Ed. by P. Chifflard, D. Karthe, J. Hahn and L. Menzel. Augsburg, 2020.
[11] T. Schrag, M. Ehrenwirth, T. Ramm, A. Vannahme and C. Trinkl. "Solar Energy Use in District Heating Networks". In: International Conference on Renewable Energy and Energy Conversion (Oran) . Ed. by A. Belasri and S. A. Beldjilali. Springer Proceedings in Energy. Springer, 2020. DOI: 10.1007/978-981-15-5444-5_1.
[10] T. Summ, M. Ehrenwirth, C. Trinkl and W. Zörner. "Entwicklung eines Großflächenkollektors in Isolierglasbauweise für den Einsatz in Wärmenetzen". In: 30. Symposium Thermische Solarenergie (Bad Staffelstein). Ed. by Conexio GmbH. Pforzheim, 2020.
[9] T. Ramm, M. Ehrenwirth and T. Schrag. "Modelling of the Central Heating Station within a District Heating System with Variable Temperatures". In: 13th International Modelica Conference (Regensburg). Ed. by A. Haumer. Linköping University Electronic Press. Linköping, 2019. DOI: 10.3384/ecp19157567.
[8] C. Trinkl, A. Wohnsland, S. Muschik, M. Ehrenwirth and W. Zörner. "Solarthermie in der praxisorientierten Hochschulausbildung: Konzept, Umsetzung and Erfahrungen am Beispiel der Solaren Prozesswärme". In: 29. Symposium Thermische Solarenergie (Bad Staffelstein). Ed. by Conexio GmbH. Pforzheim, 2019.
[7] A. Vannahme, T. Ramm, M. Ehrenwirth and T. Schrag. "Comparison of a usual heat-transferstation with a hydraulic modified version ander the aspect of exergy saving". In: 13th International Modelica Conference (Regensburg). Ed. by A. Haumer. Linköping University Electronic Press. Linköping, 2019. DOI: 10.3384/ecp19157647.
[6] T. Duschner, M. Ehrenwirth, M. Klärner, C. Trinkl and W. Zörner. "Photovoltaik mit Wärmepumpe oder Solarthermie - Wer liefert den besseren Deckungsgrad". In: 28. Symposium Thermische Solarenergie (Bad Staffelstein). Ed. by Conexio GmbH. Pforzheim, 2018.
[5] T. Duschner, M. Ehrenwirth, M. Klärner, C. Trinkl and W. Zörner. "Vergleich von Energieversorgungskonzepten für Geschäftsgebäude mit großen PV-Anlagen unter verschiedenen Zielgrößen". In: 33. PV Symposium 2018 (Bad Staffelstein). Ed. by Conexio GmbH. Pforzheim, 2018.
[4] M. Ehrenwirth, M. Klärner, C. Trinkl and W. Zörner. "Technisch-wirtschaftliche Analyse eines solarthermischen Warmwasser-Systems mit Kunststoffkollektoren". In: 27. Symposium Thermische Solarenergie (Bad Staffelstein). Ed. by Ostbayerisches Technologie-Transfer-Institut e.V.. Regensburg, 2017.
[3] M. Ehrenwirth, M. Klärner, F. Conti, C. Trinkl and W. Zörner. "Messtechnische Untersuchung solarthermischer Kunststoffkollektoren". In: 26. Symposium Thermische Solarenergie (Bad Staffelstein). Ed. by Ostbayerisches Technologie-Transfer-Institut e.V.. Regensburg, 2016.
[2] M. Ehrenwirth, M. Klärner, C. Trinkl and W. Zörner. "Drain-Back-Systeme – Stand der Technik and Potenzial für Kunststoffkollektoren". In: 25. Symposium Thermische Solarenergie (Bad Staffelstein). Ed. by Ostbayerisches Technologie-Transfer-Institut e.V.. Regensburg, 2015.
[1] C. Reiter, S. Brandmayr, M. Ehrenwirth, C. Trinkl and W. Zörner. "Simulationsgestützte Leistungsanpassung von Kunststoffkollektoren". In: 24. Symposium Thermische Solarenergie (Bad Staffelstein). Ed. by Ostbayerisches Technologie-Transfer-Institut e.V.. Regensburg, 2014.

Misc.

[7] T. Oltersdorf, L. Schnabel, S. Braungardt, H. Fugmann, L. Joos, C. Vering, V. Venzik, C. Höges, D. Müller, M. Cop, E. Mickoleit, K. Stöckel, R. Barta, A. Jäger, U. Hesse, C. Breitkopf, W. Tegethoff, C. Peterander, C. Becker, B. Pätzold, D. Oppelt, R. Meinert, B. Albertsen, A. Speerforck, G. Schmitz, L. Haak, N. Mirl, J. Brander, K. Spindler, K. Stergiaropoulos, M. Werner, T. Reum, M. Ehrenwirth, C. Trinkl and T. Schrag. "Country Report: Germany". In: HPT Annex 54: Heat Pump Systems with Low-GWP Refrigerants. 2021 Progress Annual Report . Ed. by International Energy Agency. Freiburg, 2022.
[6] M. Ehrenwirth. "Theoretical and Experimental Analysis of Polymer-Based Solar Thermal Drain Back Systems". Dissertation. Ed. by Technische Universität München. München, 2021. URL: https://mediatum.ub.tum.de/download/1547674/1547674.pdf.
[5] T. Schrag, M. Ehrenwirth, S. Kauth, A. Kruck, S. Muschik, T. Ramm, R. Schneider, C. Trinkl and M. Werner. "Netze mit abgesenkter Temperatur als Anbieter von Regelleistung".
Abschlussbericht. Ed. by Technische Hochschule Ingolstadt. Ingolstadt, 2020. DOI: 10.2314/KXP:1823875114.
[4] A. Vannahme, M. Ehrenwirth and T. Schrag. "Verfahren zur Wärmebedarfsermittlung im Vergleich". In: EuroHeat&Power 7-8/2020 (2020).
[3] T. Duschner, M. Ehrenwirth, C. Trinkl, W. Zörner and A. Klier. "Konzeptionierung netzunabhängiger Betriebsweisen großer PV-Anlagen in Geschäftsgebäuden". Abschlussbericht. Ed. by
Technische Hochschule Ingolstadt. Ingolstadt, 2019. URL: https://www.dbu.de/OPAC/ab/DBU-Abschlussbericht-AZ-33718_01-Hauptbericht.pdf.
[2] D. Beckenbauer, M. Klärner, M. Ehrenwirth, M. Hüneke and W. Zörner. "SmartSOLgrid - Solares Smart Grid im Wärmebereich". Abschlussbericht. Ed. by Technische Hochschule Ingolstadt.
Ingolstadt, 2017. DOI: 10.2314/GBV:896550923.
[1] M. Ehrenwirth, M. Klärner, C. Reiter, C. Trinkl, W. Zörner and W. Hoellenriegel. "Untersuchungen zur Fertigungstechnik and Kollektorkonstruktion für Vollkunststoff-Kollektoren". Abschlussbericht.
Ed. by Technische Hochschule Ingolstadt. Ingolstadt, 2016. DOI: 10.2314/GBV:887789994.