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Tube Collector
Tube Collector
Collector field (90 m² of evacuated-tube collectors) to power the refrigerating machine of the University Hospital Freiburg’s (Universitätsklinik Freiburg) air-conditioning system.

Also called an Evacuated-Tube Collector. In this type of Collector, the Absorber is inside an air-evacuated glass tube, and, compared to a Flat-Plate Collector, energy loss can be further reduced and temperatures up to 150 °C (302 °F) can be reached. Because of their high Efficiency, evacuated-tube collectors also work on slightly cloudy days.

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