What is a vacuum tube solar collector?
The vacuum tube solar collectors represent a non-electric heater of domestic water, that use the sun energy.
They are designed for two-rounds installation for antifreeze coolant. They are composed of 12 parallel-arranged SC tubes in so-called solar collectors.
Each one of these tubes is insolated by the means of double tube, pre-evacuated between the layers, and on the inside is applied selective coating, that catches the sun radiation.
The vacuum tubes are made out of borosilicate glass.
