Fraunhofer ISE optimizes propane heat pump technology with Kelvion component
Fraunhofer ISE has developed a functional prototype of a propane heat pump. Kelvion supplied a GK108H heat exchanger for the project, enabling a reduced amount of propane.
The Fraunhofer Institute for Solar Energy Systems (ISE) in Freiburg has successfully developed a working prototype of a propane heat pump as part of the 'LC150' research project. The initiative aimed to standardize and reduce the amount of refrigerant in propane-based heat pumps, facilitating broader indoor use by mitigating fire risks. The German federal government-funded project brought together the research institute and heat pump manufacturers.
Kelvion contributed a GK108H brazed plate heat exchanger from its 'ConBraze' series to the research. This heat exchanger is designed for low refrigerant volume and high efficiency. The unit performed well in tests and was selected for two of the top-performing refrigeration circuits.
Propane is an environmentally friendly refrigerant due to its low global warming potential (GWP) and is seen as a promising alternative as PFAS compounds face increasing restrictions within the EU. Reducing the propane charge to below 150 grams significantly lowers the fire risk associated with heat pumps, making indoor installations more feasible.
Fraunhofer ISE is Europe's largest research institute for solar energy. Kelvion is a global manufacturer of heat exchangers and heat pump solutions, providing equipment for diverse industrial applications. This collaboration highlights the crucial role of industry and research in developing energy-efficient and sustainable technologies.