About us

The Institute for Energy Systems IES employs approximately 30 researchers and engineers in the areas of thermal energy systems, electrical energy systems, and the Wärmepumpen Testzentrum WPZ.

In addition to the daily research activities for local small and medium-sized enterprises (SMEs), the Institute for Energy Systems at the NTB also has a teaching position. Of the 30 employees, 3 professors and 1 lecturer teach in the bachelor's degree in system engineering and in the Master's degree course MAS Energy Systems.

Beside the daily research activity for local engineering businesses, the institute provides also teaching assignments. Four professors are involved in bachelor degree and masters courses.

The teaching assignments are in the areas of:

  • Refrigeration technology and heat pumps
  • fluid dynamics
  • Photovoltaics and renewable energy
  • Power electronics

Currently, the institute is employing four students with part-time work who pursue a master of science in engineering MSE.

The sections of the institute have the following focus areas:

  • Thermal Energy Systems:
    Development of heat pumps and refrigeration machines
    Design of thermal systems
    Simulation ot thermal and fluid systems
  • Electrical Energy Systems:
    Design and development of power electronics
    Circuit design
  • Wärmepumpen Testzentrum WPZ:
    Test and certification of heat pumps

Overview of the IES Team

Cordin Arpagaus

Dr. Cordin Arpagaus
Senior Research Engineer / Institute for Energy Systems (Thermodynamics)

+41 81 755 34 94
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Matthias Berthold

Dipl. Ing. Matthias Berthold
Research associate at the Institute for Energy Systems (decentralized energy systems)

+41 81 755 31 51
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Stefan Bertsch

Prof. Stefan Bertsch
Head of the Institute for Energy Systems IES, Professor for thermodynamics and refrigeration

+41 81 755 34 69
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Frédéric Bless

Dr. Frédéric Bless
Research associate at the Institute for Energy Systems (thermodynamics)

+41 81 755 31 48
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Thomas Bucher

Dipl. Ing. FH Thomas Bucher
Research associate at the Institute for Energy Systems (thermodynamics)

+41 81 755 31 59
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Elias Büchel

Elias Büchel
Research assistant at the Institute for Energy Systems (thermodynamics)

+41 81 755 31 45
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Mick Eschmann

Dipl. Ing. FH Mick Eschmann
Head of Wärmepumpen-Testzentrum WPZ

+41 81 755 34 02
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Stefan Frei

Stefan Frei
Research associate at the Institute for Energy Systems (thermodynamics)

+41 81 755 31 75
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Rupert Kurt Fritz

Rupert Kurt Fritz
Measurement engineer at Wärmepumpen-Testzentrum WPZ

+41 81 755 33 55
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Bernhard Girardi

Bernhard Girardi
Research assistant at the Institute for Energy Systems (power electronics)

+41 81 755 34 09
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Daniel Gstöhl

Prof. Dr. Daniel Gstöhl
Head of MAS Energy Systems study programme, Professor for thermodynamics and fluidics

+41 81 755 34 26
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Stefan Klammer

Stefan Klammer
Research associate at the Institute for Energy Systems (power electronics)

+41 81 755 31 71
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Falk Kyburz

Falk Kyburz
Research associate at the Institute for Energy Systems (power electronics)

+41 81 755 31 44
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Thomas Loop

Thomas Loop
Measurement engineer at Wärmepumpen-Testzentrum WPZ

+41 81 755 33 78
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Markus Markstaler

Markus Markstaler
Lecturer for renewable energy

+41 81 755 33 34
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Clemens Alois Mathis

Clemens Alois Mathis
Research assistant at the Institute for Energy Systems (power electronics)

+41 81 755 33 93
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Ekaterina Möhr

Dr. Ekaterina Möhr
Senior research associate at the Institute for Energy Systems (thermodynamics)

+41 81 755 34 65
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Simon Nigsch

Simon Nigsch
Research associate at the Institute for Energy Systems (power electronics)

+41 81 755 31 78
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Daniel Oppliger

Daniel Oppliger
Doctoral student at the Institut für Energiesysteme

+41 81 755 33 84
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Gerhard Purkathofer

Gerhard Purkathofer
Mechanical engineer at the Institute for Energy Systems (machinery and test bench construction)

+41 81 755 34 79
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Ramon Rankwiler

Ramon Rankwiler
Measurement engineer at Wärmepumpen-Testzentrum WPZ

+41 81 755 34 83
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Kurt Schenk

Prof. Kurt Schenk
Professor for power electronics, Head of MSc in Engineering study progamme

+41 81 755 34 73
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Christian Seitz

Christian Seitz
Research assistant at the Institute for Energy Systems (thermodynamics)

+41 81 755 31 46
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Michael Uhlmann

Dipl. Ing. FH Michael Uhlmann
Research associate at the Institute for Energy Systems (thermodynamics)

+41 81 755 34 17
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