Advantages: a copper coil is installed inside the tank as the heat exchanger. the tank is just a heat storage.
Features: 1) Can withstand the pressure of tap water when working 2) With real drinking water quality and promotes life quality 3) There is no need to wait and no limit to using 4) It is of completely automatic operation and humanity design 5) The effect of temperature preservation can last 80 hours 6) It refuses volatile tubes, leaving no anxiety 7) Without incrustant, its life-span is longer 8) Upgraded technology and wider range
Pre-heated solar hot water working Principle 1. The vacuum tube collector absorb the heat energy to heat the water in heat storage tank, 2. When using the hot water, the cold water flows through the inlet, the copper coil absorb the heat then transfer into the cold water, so that the temperature rise up ceaseless, 3. For the original features of the copper coil, the water temperature of the outlet is close to the water temperature of the water tank(≤ 3C), so the high pressure of the cold water into the copper coil and absorb the temperature, at last the water can be used.
Pre-heated solar water heater
