1). with EN12975 certification 2). -30 degree is ok 3). easy installation 4). absorber area efficiency more than 80% 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 6) Corrosion resistant silver brazed copper header 7) The surface is made of aluminum board8) Powder coated (black or silver) aluminum casing 9) Stable solar conversion during the day10) The perfect solar collector for domestic solar water heater systems 11) Ideal for commercial solar water heating applications

How it works: 1). The operation of the solar collector is very simple;2). Solar absorption: solar radiation is absorbed by the vacuum tubes and converted into heat energy;3). Heat energy transfer: heat pipes conduct the heat energy from the vacuum tube to the header copper pipe of solar collector;4). Heat energy storage: water is circulated through the header copper

pipe of solar collector, via intermittent pump cycling. Each time the water

circulates through the header copper pipe, the temperatures is raised by 5-10°C.

Throughout the day, the water in the tank is gradually heated.

solar pool water heaters