Thermo siphon solar systems are particularly suitable for southern export markets because they are technically less complex and therefore cause lower costs. Thermo siphon systems – also known as gravity or natural circulation systems – work without supplying pumps and electrical control, driven on density differences of hot and cold heat transfer fluids.

The aim of this joint DBU-funded project of CitrinSolar Energie- und Umwelttechnolo-gie GmbH and the University of Ingolstadt is the development of a close-to-production and market-oriented prototype thermo siphon system. Technical problems such as the change of flow direction at night-time (reverse thermo siphoning) - should be remedied where possible.

The resulting prototype system is designed to target physical interrelations to reduce reverse thermo siphoning while requiring no additional valves to control the flow di-rection. Through harmonization of collector properties and volume, the warm water comfort increases for the consumer. The developed prototype is now ready for a market launch.


Project Operation
CitrinSolar Energie- und Umwelttechnologie GmbH
Böhmerwaldstr. 32
85368 Moosburg
Telefon 08761-334029
hanns.koller@citrinsolar.de
www.citrinsolar.de

Hochschule Ingolstadt
Kompetenzfeld Erneuerbare Energien
Esplanade 10
85049 Ingolstadt
Telefon 0841-9348227
wilfried.zoerner@haw-ingolstadt.de
www.solartechnik-ingolstadt.de

Ref. 25027