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Fraunhofer-Institut für Solare Energiesysteme ISE Heidenhofstraße 2 79110 Freiburg, Germany http://www.ise.fraunhofer.de
Contact Mr Clemens Dankwerth +49 761 45885449
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Fraunhofer-Institut für Solare Energiesysteme ISE

Effizienzrekord für Wärmepumpen-Kältekreis mit Propan

(PresseBox) (Freiburg, )
Wärmepumpen-Hersteller arbeiten derzeit sowohl an Kostensenkungen als auch an nachhaltigen Kältemitteln für ihre Geräte. Im Projekt LC150 (»low charge 150 g«) entwickeln das Fraunhofer-Institut für Solare Energiesysteme ISE und ein Konsortium aus Wärmepumpenherstellern einen standardisierten und kältemittelreduzierten Propan-Kältekreis. Dem Team gelang nun ein Effizienzrekord: mit nur 124 Gramm Propan wurde eine Heizleistung von 12,8 Kilowatt erreicht. Daraus ergibt sich eine spezifische Kältemittelfüllmenge von ca.10g/kW. Auf der Messe Chillventa (11.-13.10.2022, Messe Nürnberg) zeigt das Fraunhofer ISE einen Beispiel-Kältekreis aus dem Projekt.

Seit Oktober 2021 baut das Projektteam des Fraunhofer ISE Prototypen für Sole-Wärmepumpen, wobei die einzelnen Komponenten (Verdampfer, Verdichter, Kondensator,
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