Working principles:
Copper coil Preheated solar water heater provide mains pressure via a high efficiency copper coil heat exchanger which located within the tank.
1. For water ......
Advantages:
1. Use the copper coil as the heat exchanger, it is the international development trend, it is simple to install and use.
2. It takes the advantage of the tap water’......
This type uses the all glass evacuated solar collector tubes as the heat-absorbing element. The high vacuum degree of the clearance between the outer and inner tube reduces the hea......