Prof. Dr. Andreas Witzig

Work at ZHAW

Position

Director of ICP Institute of Computational Physics

Focus

Building simulation

Experience

• Founder, CEO, president of the board
  Vela Solaris AG
  12 / 2006 - 08 / 2015
• Project leader Polysun
  SPF Solar Technology Institute, University of Rapperswil
  03 / 2005 - 12 / 2006
• Product manager optoelectronics
  Synopsys Inc.
  2004 - 02 / 2005
• Product manager optoelectronics
  ISE Integrated Systems Engineering
  2002 - 2004
• Scientific research staff
  Integrated Systems Laboratory
  2002 - 2004

Network

Membership of networks

• Association building simulation Switzerland (president)
• Strategic Management IBH-Lab "Seamless Learning"
• IEA Task 53, new generation solar cooling and heating
• Steering committee Eurosun 2018
• Scientific committee EuroSun 2010
• Scientific committee CLEO-EQEC 2005
• Scientific committee NUSOD 2001-2005

Awards

ETH Medaille
ETH Zurich
01 / 2003

Social media

LinkedIn

Projects

• Interoperable solutions to streamline PED evolution and cross-sectoral integration / Co-project leader / laufend
• Smart urban green spaces / Team member / laufend
• Emission Zero: A sustainable construction simulation game, 1990-2050 / Team member / laufend
• Building Simulation Switzerland Business Administration / Project leader / laufend
• Polysun-ML / Deputy project leader / laufend
• Deep Dive ML on Simulated Enzyme-Electrolysis Performance / Team member / abgeschlossen
• Digital Services from the Building Cloud / Project leader / abgeschlossen
• Digitally assisted intelligent retrofitting of office buildings / Project leader / abgeschlossen
• User Assistance Systems for Smart Commercial Buildings / Team member / abgeschlossen
• One-Click energy simulation for architects / Project leader / abgeschlossen
• Software for the thermohydraulic design of solar systems / Co-project leader / abgeschlossen

Publications

• Zhao, Yaohua; Wang, Yubo; Quan, Zhenhua; Wang, Lincheng; Witzig, Andreas,

  2022.

  Performance and optimisation of a novel phase change thermal storage device.

  Journal of Energy Storage.

  52(105076).

  Available from: https://doi.org/10.1016/j.est.2022.105076

• Witzig, Andreas,

  2022.

  Einzelprojekt „Wellen“

  .

  In:

  Dilger, Bernadette; Erlemann, Jennifer; Müller, Claude; Rapp, Christian, eds.,

  Seamless Learning.

  Wiesbaden:

  Springer.

  pp. 93-121.

  Available from: https://doi.org/10.1007/978-3-658-34698-0_4

• Pickhardt, Carola; Fuchs, Hans Ulrich; Dumont, Elisabeth; Hügel, Katrin; Witzig, Andreas,

  2022.

  Modellieren, Visualisieren und die Simulation dynamischer Systeme als Seamless Learning : ein Beitrag zu diesem Prozess aus der Praxis am Beispiel eines Mathematikmoduls

  .

  In:

  Dilger, Bernadette; Erlemann, Jennifer; Müller Werder, Claude; Rapp, Christian, eds.,

  Seamless Learning.

  Wiesbaden:

  Springer.

  pp. 35-63.

  Available from: https://doi.org/10.1007/978-3-658-34698-0_2

• Witzig, Andreas; Tello, Camilo; Schranz, Franziska; Bruderer, Johannes; Haase, Matthias,

  2023.

  Quantifying energy-saving measures in office buildings by simulation in 2D cross sections [paper].

  In:

  Johra, Hicham, ed.,

  NSB 2023 - Book of Technical Papers : 13th Nordic Symposium on Building Physics.

  13th Nordic Symposium on Building Physics (NSB), Aalborg, Denmark, 12-14 June 2023.

  Aalborg University.

  pp. 317.

  Available from: https://doi.org/10.54337/aau541623658

• Wolf, Andreas; Witzig, Andreas; Moreno, Daniel,

  2019.

  Cross-border education in the field of renewable energies using a dynamic simulation software [paper].

  In:

  Sayigh, Ali, ed.,

  Renewable energy and sustainable buildings : selected papers from the World Renewable Energy Congress WREC 2018.

  World Renewable Energy Congress, London, 30 July to 3 August 2018.

  Cham:

  Springer.

  pp. 771-778.

  Innovative Renewable Energy.

  Available from: https://doi.org/10.1007/978-3-030-18488-9_63

• Jakobi, Marc; Kunath, Lars; Stöckli, Urs; Witzig, Andreas,

  2018.

  BIM use-case : model-based performance optimization [paper].

  In:

  EuroSun 2018 Conference Proceedings.

  12th International Conference on Solar Energy and Buildings (EuroSun 2018), Rapperswil, 10-13 September 2018.

  International Solar Energy Society.

  Available from: https://doi.org/10.18086/eurosun2018.11.07

• Witzig, Andreas; Borth, S.; Danesi, Serena,

  2018.

  Understanding the dynamics of solar energy systems by using simulation narratives [paper].

  In:

  Proceedings of the 12th International Conference on Solar Energy for Buildings and Industry (EuroSun2018).

  12th International Conference on Solar Energy and Buildings (EuroSun 2018), Rapperswil, 10-13 September 2018.

  Freiburg:

  International Solar Energy Society.

  Available from: https://doi.org/10.18086/eurosun2018.07.01

• Eismann, Ralph; Föller, Fiona; Witzig, Andreas,

  2017.

  THD : Thermohydraulisches Dimensionierungsprogramm für Solaranlagen [paper].

  In:

  Tagungsband des 27. Symposium Thermische Solarenergie.

  27. Symposium Thermische Solarenergie, Bad Staffelstein, Deutschland, 10.-12. Mai 2017.

  Ostbayerisches Technologie-Transfer-Institut.

• Witzig, Andreas; Krieg, Jürg; Kunath, Lars; Sotnikov, Artem,

  2016.

  Kollektorerträge und Passivsolargewinne : Systemsimulation mit Mehrzonen-Gebäudesimulation [paper].

  In:

  26. Symposium Thermische Solarenergie : 20. bis 22. April 2016, Kloster Banz, Bad Staffelstein.

  26. Symposium Thermische Solarenergie, Bad Staffelstein, Deutschland, 20.-22. April 2016.

  Regensburg:

  Ostbayerisches Technologie-Transfer-Institut.

• Witzig, Andreas; Kunath, Lars, eds.,

  2016.

  SIGES Internationale Konferenz zur Simulation gebäudetechnischer Energiesysteme : Sammelband der Konferenzbeiträge.

  1. Internationale Konferenz zur Simulation gebäudetechnischer Energiesysteme, SIGES 2016, Winterthur, 8.-9. September 2016.

  Winterthur:

  ZHAW Zürcher Hochschule für Angewandte Wissenschaften.

  .

• Witzig, Andreas,

  2022.

  Gebäudesimulation : Trends und Ausblick.

  Faktor Themenheft "Simulation".

  (57), pp. 22-23.

  Available from: https://faktor.ch/produkt/themenheft-57-simulation/

• Eismann, Ralph; Witzig, Andreas,

  2017.

  Programm THD : Thermohydraulisches Dimensionierungsprogramm für Solaranlagen.

  Bundesamt für Energie.

• Wolf, Andreas; Gähler, Conrad; Witzig, Andreas,

  2017.

  Solar-Controller optimieren mit Simulink-Polysun Cosimulation [paper].

  In:

  27. Symposium Thermische Solarenergie, Bad Staffelstein, Deutschland, 10.-12. Mai 2017.

• Sotnikov, Artem; Witzig, Andreas,

  2016.

  Building simulations in Polysun [paper].

  In:

  1. Internationale Konferenz zur Simulation gebäudetechnischer Energiesysteme (SIGES 2016), Winterthur, 8.-9. September 2016.

• Witzig, Andreas; Meier, Luc; Kunath, Lars; Wagner, Stefan,

  2016.

  Integrale Planung mit 3D Dachplaner, Stückliste, Batteriespeicher, Power-to-Heat [paper].

  In:

  31. Symposium Photovoltaische Solarenergie, Bad Staffelstein, Deutschland, 8.-10. März 2016.

• Witzig, Andreas; Kunath, Lars,

  2016.

  Polysun simulation software in teaching and research at various academic institutions in Switzerland [paper].

  In:

  SIGES 2016 Conference, Winterthur, 8-9 September 2016.

• Wolf, Andreas; Jiankun, Zhu; Prandini, Markus; Witzig, Andreas,

  2016.

  Renewable energy training and certificate program in China [paper].

  In:

  1. Internationale Konferenz zur Simulation gebäudetechnischer Energiesysteme (SIGES 2016), Winterthur, 8.-9. September 2016.

• Witzig, Andreas; Wolf, Andreas; Kunath, Lars; Prandini, Markus,

  2016.

  Teaching renewable energy systems by use of simulation software : experience at universities of applied sciences, in in-service training, and from international know-how transfer [paper].

  In:

  EuroSun 2016 Conference Proceedings International Solar Energy Society (ISES) European Solar Conference Proceedings International Conference on Solar Heating & Cooling in Buildings.

  EuroSun 2016: International Conference on Solar Energy and Buildings, Palma de Mallorca, Spain, 11-14 October 2016.

  Freiburg:

  International Solar Energy Society.

  pp. 1591-1600.

  Available from: https://doi.org/10.18086/eurosun.2016.10.03

• Witzig, Andreas,

  2014.

  Energiekonzepte der Zukunft : Werkzeuge für den Planungsprozess.

  In:

  Schweizerischer Ingenieur- und Architektenverein (SIA) - Jahrestagung der Berufsgruppe Technik, Muttenz, 23. September 2014.

Publications before appointment at the ZHAW

• E. Vrettos, A. Witzig, R. Kurmann, S. Koch, and G. Andersson, Maximizing local PV utilization using small-scale batteries and flexible thermal loads, European PV Solar Energy Conference and Exhibition (PVSEC), Paris, France, September 2013.
• R. Bornatico, J. Hüssy, A. Witzig, L. Guzzella, Surrogate modeling of the fast optimization of energy systems, Elsevier journal Energy, vol. 57, June 2013
• R. Bornatico, M. Pfeiffer, A. Witzig, L. Guzzella, Optimal sizing of a solar thermal building installation using particle swarm optimization, Elsevier journal Energy, vol. 41, issue 1, May 2012
• A. Witzig, Kombination Solar und Wärmepumpen, Innovative Konzepte in der dezentralen Energieproduktion, Energiepraxis-Bulletin der Ostschweizer Energiefachstellen, Zürich, Oktober 2011
• A. Witzig, Advances in Optical Device Simulation Software, Photonics Spectra, November 2004
• A. Witzig, Modeling the Optical Processes in Semiconductor Lasers, PhD Thesis, ETH-Nr. 14694, ISBN 3-89649-803-1, Hartung-Gorre Verlag, Konstanz, 2002

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