The vacuum tube collector is designed for installation on the roof, with large shaped reflectors that concentrate solar radiation on the absorption surface of the evacuated tubes. The tube consists of two coaxial glass tubes with a vacuum between them. An aluminum lamella that fits well into the glass tube collects heat from the entire inner surface of the vacuum tube, discharging it into the solar fluid inside the copper tube. These copper pipes join the collector header, insulated with 30 mm of mineral wool. Output 1522 W.