The Fraunhofer Institute for Solar Energy Systems aims to develop propane heat pumps to replace existing fossil fuel-based heating systems in a range of residential applications.
The Fraunhofer Institute’s solar thermal façade panels offer a noiseless and space-saving alternative to the air unit of an air-source heat pump.
The heat pump generated 12.8kW (3.6TR) of heating capacity with only 124g (4.4oz) of R290.
Preliminary work achieved a 75% reduction in refrigerant charge.
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