THE PRINCIPLE
Closed loop thermosyphon solar water heater provides mains pressure pre-heating via a high efficiency copper coil heat exchanger installed within the solar collector tank. The way in which the Mains Pressure solar collector heats water is the same as the non-pressure solar collector. Instead of using the water in the tank directly, as the non-pressure does, the type uses a copper coil heat exchanger inside the tank which provides heat for thermal storage, when water flows through the coil it absorbs heat from the water inside the solar collector tank. The solar collector tank is therefore a thermal store.
THE FEATURES
1. Almost no water is introduced into the tank (apart from occasional topping up), so corrosion and scale buildup are almost totally eliminated.

2. Use the copper coil as the heat exchanger, according with international fashion trend, it is simple to install and use.
3. It takes the advantage of the tap water's pressure. more pressure ,more comfortable.
4. It can produce hot water with constant temperature, it is safe and comfortable to use.
5. The water can be heated rapidly, so it can produce the high quality hot water.
6. It can produce more hot water than the general types because it isn't restricted by the volume of the water tank.
7.Optional accessories: Electric backup heater, Intelligent controller and automatic filling valve
THE MATERIALS
1.Inner tank: stainless steel SUS304
2.Vacuum tube:QB-AL-N/AL-58-1800
3.Outer tank: painted steel(powder coated color steel sheet)/stainless steel SUS304 plate
4.Insulation:polyurethane
5.Frame:coated galvanized steel/stainless steel