Solar Water Heater - Sus304 Stainless Steel Inner Tank, 58mmx1.8m Vacuum Tube , High Efficiency Heat Transfer System

Working principle of solar water heater :
When the discrepant temperature of the solar collector and water tank reaches the set value, the controller shall start the circulation pump automatically. Vacuum tube is composed of inner and outer glass pipe, inspiratory layer, vacuum space, inspriatory membrane. The surface of inner and outer glass tube is plated with selective absorption layer. The layer absorb the solar energy and turn it into heat energy, aluminum fins pass the heat energy to the heat pipe, the liquid medium in the heat pipe is heated by the heat energy, then turns into the gas medium, the gas medium flows up to the top of the heat pipe (condenser) and transfer the energy to the copper manifold header heat pipe. At the same time the gas medium turns into the liquid when cooled, then flows down. Keep recycling. In case the temperature of the water tank does not reach Tmax, then start the auxiliary heating device.
Specifications
1) Materials
A) Inner tank: SUS304-2B food grade stainless steel i 2mm
B) Outer tank: Galvanized steel sheeti 0.4mm
C) Copper coils(single/double): 12mm,thickness 1.0mm,length 15m/pcs
2) Manifold casing: Aluminum alloy
3) Manifold: Red copper
4) Collector frame: Aluminum alloy, 3mm
5) Vacuum tube: borosilicate glass 3.3 with tri-element coating
6) Vacuum tube size: 58mm*1.8m / 47mm*1.5m
7) Working station with pump
8) Working pressure: MAX. 6 bar
9) Electrical heater: high grade tube with dry-heating safeguar