Tuesday, April 1 -- 2:00 PM - 3:30 PM (GMT/UTC)
Thursday, April 3 -- 6:00 am - 7:30 AM (GMT/UTC)

April 1, 2025     
Join this session of the IEA SHC Solar Academy webinar series on the topic of Compact Thermal Energy Storage Materials: Better Material Characterization and Determination of Material Degradation Mechanisms.

Compact thermal energy storage technologies can be applied in cases where specific storage temperatures are desired or where a limited volume is available. The materials that provide compact storage are phase change materials or thermochemical materials. Within Task 67 of the IEA Solar Heating and Cooling programme, further work has been done on materials development, materials characterisation, state of charge determination, and component development. In this webinar, the activities and results of the work will be highlighted, and specific attention will be paid to the materials characterization subtask and the materials performance degradation subtask.

IEA SHC Registration

  • Webinar 1
    Tuesday, April 1, 2025 - 2:00 to 3:30 PM (GMT/UTC) 
    Register Now
     
  • Webinar 2 - Rebroadcast of webinar 1
    Thursday, April 3, 2025 - 6:00 to 7:00 AM (GMT/UTC)
    Register Now 

This 90-minute webinar will include a 30-minute Q/A session and a recording of the webinar as well as the presentations will be available online afterwards.  The webinar is organised by the Solar Academy of the IEA Solar Heating and Cooling Programme and hosted by ISES, the International Solar Energy Society.

Speakers

  • Wim van Helden, AEE INTEC (Austria): Compact Thermal Energy Storage: Advances in Materials and Performance Insights from IEA SHC Task 67
  • Daniel Lager, AIT (Austria): Compact thermal energy storage materials characterisation techniques
  • Christoph Rathgeber, ZAE Bayern (Germany): How to determine and categorise materials performance degradation
  • Moderator: Bärbel Epp, Solrico

Bärbel Epp - Moderator

Bärbel Epp is the founder and managing director of the German consultancy solrico. She is responsible for the international newsletter of the web portal www.solarthermalworld.org, reporting exclusively about market and technology trends in the solar heating and cooling sector globally. solrico also created the first online World Map of SHIP suppliers (SHIP = Solar Heat for Industrial Processes) and carries out surveys among the around 70 companies listed on the world map annually. Bärbel Epp graduated in Physics at the University of Oldenburg, Germany.

Wim van Helden

Wim van Helden studied Technical Physics and did his PhD in Energy Technologies at the Eindhoven University of Technology, The Netherlands. Since 2014 he is working with AEE INTEC in Gleisdorf, Austria, where he is Senior Expert in Thermal Energy Storage. He has long experience in leading national and international research and demonstration projects, developing large scale Thermal Energy Storage and compact Thermal Energy Storage.  

He is leading the Task45 on Large Thermal Energy Storage for District Heating from the International Energy Agency IEA, Energy Storage programme and the Task67 on Compact Thermal Energy Storage Materials Within Component Within Systems, of the IEA Solar Heating and Cooling programme.

Daniel Lager

Dr. Daniel Lager has been working in the field of Thermophysics and Thermal Analysis since 2007 and is head of the associated accredited laboratory at the AIT Austrian Institute of Technology GmbH since 2019. He received a PhD degree from Vienna University of Technology (TU Wien) in 2017 for his dissertation which focuses on thermophysical characterisation of heat storage materials and he has been author and co-author of numerous publications since 2006. Parallel to his work at AIT, he is an external lecturer at the University of Applied Sciences Burgenland.

Christoph Rathgeber

Christoph Rathgebber

Christoph Rathgeber works in the Thermal Energy Storage group at the Bavarian Institute for Applied Energy Research (ZAE Bayern) in Germany. His main field of research are phase change materials based on salt hydrates. As part of several working groups of the Energy Storage Technology Collaboration Program of the International Energy Agency, he has investigated experimental methods for the characterization of PCM under application conditions.