Our new range of vacuum tube collectors consistsÂ of vacuum tubes with two concentric glass tubes between which there is high grade vacuum providingÂ a perfect insulation, thus these collectors withstand frost up toÂ -18 C.
In the inner part of the tube there is a U- shape copper tube with an aluminum fin in which the water (brine) of the system is heated.
The newly designed reflector in the parabolic shape is made of highly reflecting aluminum. This type of reflector improves the efficiency as it concentrates the sun radiation on the tube.
- Our model Calpak 14 VTN consists of 14 tubes 1.5 m long.
- Other sizes from 6 to 16 tubes can be delivered on request