Vacuum Tube

- borosilicate glass 3.3 with good transmittance;

- solar selective coating with high absorptance and low emittance;

- vacuum jacket to prevent heat loss;

- fired flash to avoid vacuum decreasing;

- pressurized collector with U copper tubes;

- pressurized collector with heat pipe;

- non-pressurized collector with water-in-tube manifold.

- selective coating;

- perfect combination with building;

- simple structure, low cost;

- good thermal performance;

- utilized in cold climate;

- provide domestic hot water as well as heating and cooling

- split-up system, better visual impression;

- stable operation all year round;

- control solution for different system;

- LCD screen display;

- ensure higher solar yield

- Acquisition of solar water system operation data and energy yield, calculation of  solar fraction and efficiency;

- Generate instantaneous efficiency curve of collector;

- Available for all testing

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