High-temperature heat pumps (HTHPs) operating above 100 °C offer an efficient pathway to electrify low- and medium-temperature industrial process heat. Despite their potential, adoption has been limited by economic, technological, integration, and knowledge barriers.
The Annex 58 HTHP-CH project addressed these challenges by developing practical guidelines, evaluation tools, and a web-based integration platform to support optimal HTHP implementation in Swiss industry. The Swiss project team including OST-IES, EPFL-IPESE, HEIG-VD/IGT, and CSD Engineers focused on optimizing HTHP integration through industrial case studies, modelling, and practical guidelines.
The solutions were validated ithrough case studies (ELSA Estavayer Lait SA, Cremo SA, Gustav Spiess AG) in processes such as drying, evaporation, and cleaning-in-place (CIP), effectively bridging the gap between theory and practice. The project delivered an evaluation tool and implementation guidelines tailored to Swiss industry and disseminated results widely via webinars, publications, workshops, and international collaboration with 13 partner countries under IEA HPT Annex 58.
The Final Summary Report summarizes the main outcomes and references several Appendix documents that provide comprehensive insights and additional resources to enhance understanding and application of the guidelines.
Related documents
Schlussbericht_english [PDF] 1'040 kB
Appendix 1 Swiss Market Report [PDF] 1'644 kB
Appendix 2 Factsheets HTHP Technologies [PDF] 6'365 kB
Appendix 3 Factsheets HTHP Demonstration Cases [PDF] 2'894 kB
Appendix 4 Integration Concepts [PDF] 9'730 kB
Appendix 5 Integration Guidelines Report [PDF] 8'102 kB
Appendix 6 Case Studies Report [PDF] 7'005 kB
Appendix 7 HTHP Evaluation Tool User Instructions [PDF] 851 kB
Appendix 8 Minutes from the HTHP Workshop [PDF] 2'349 kB
