solar heating system collector Features: 1) Reliable and efficient twin-glass solar tubes; 2) Copper heat pipes for rapid heat transfer; 3) Easy plug-in installation; 4) Free maintenance; 5) Suitable for mains pressure water (up to 1.0 bar); 6) Corrosion resistant silver brazed copper header; 7) Aluminum frame; 8) Powder coated (black, brown or silver) aluminum casing; 9) Stable solar conversion during the day; 10) The perfect solar collector for domestic solar water heater systems; 11) Ideal for commercial solar water heating applications. Heat Pipe Solar CollectorWork Principle: 1) The operation of the solar collector is very simple. 2) Solar absorption: solar radiation is absorbed by the solar tubes and converted into heat. 3) Solar heat transfer: heat pipes conduct the heat from within the solar tube up to the header pipe 4) Solar energy storage: water is circulated through the header, via intermittent pump cycling.Each time the water circulates through the header, the temperatures is raised by 5-10C. Throughout the day, the water in the tank is gradually heated.