Vacuum insulation in glass tubes. Two concentric glass tubes are used, with vacuum between them. The ends of the tubes are sealed so the vacuum is guaranteed for a long time.
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Vacuum surrounding the absorber is a perfect insulation, minimizing heat losses in a similar way like a vacuum flask does. Thanks to that, nor the tiniest heat gain from cloudy skies gets lost and warms up the fluid in the solar collector.
Total area: 2.66 m2
Aperture area: 1.41 m2
Dimensions W x L x H: 1430 x 1970 x 140 mm
Connection dimensions: 4x Cu pipe 22
Max. working pressure: 6 bar
Fluid volume: 2.4 l
Weight: 60 kg
Number of tubes: 15