Our Vacuum Tube Solar Energy Systems are non-pressurized, floated systems working with natural circulation. No pump is used for the operation of the system. Since it works with the pressure of cold water weight and code difference, it is necessary to mount the system at a higher point than the usage places.

It consists of two nested glass tubes. The outer surface of the inner tube is covered with a Selective coating that absorbs sunlight at a high rate. The rays penetrating through the outer tube are absorbed at a rate of 93% by the selective surface, but reflect the light at a rate of 7%. The gap formed between the two glass tubes due to vacuuming prevents the selective surface heat energy from escaping by convection and prevents the freezing of cold air by convection in cold weather, by penetrating the water circulating inside the inner tube.
This situation increases the efficiency of the system compared to other systems in cold weather. Due to the round structure of the vacuum tubes, there is a higher efficiency compared to the planar collectors, since they receive the sunlight at maximum steepness at all time