Compactg non pressure solar water heater relies on the nature circulation of the water between solar tubes and the water tank.
Thermosyphon systems work on principal of heat rising. The water enters in the bottomof the collector and rises to the tank as it warms.
The advantage of this system is that solar heat is storedin a well-insulated tank, so hot water can be used at any time without the penalty of overnight losses.
Moreover the insulation of the tank can protect heat during 3 days without heat loss.
Compact non solar water heater Galvanized steel
Material of out tank
Galvanized steel 0.4mm
Material of inner tank
0.31-0.5mm thickness SUS304 stainless steel
Tank insulating layer
55mm 45kg/m³ high-density polyurethane foamed
Inlet and outlet hole
Male G 1/2, 3/4
Solar collector tube
3.3 Borosilicate glass with Cu-SS-ALN/ANL. coating
Thickness of glass tube
Vacuum tube tightness
1.4mm thickness Galvanized steel with paint
Structure of tank:
5 holes for air vent,overflow,water inlet outlet,electric heater.
Argon arc welding
Made of stainless steel screw
18 tube 58x1,800mm
Afford for house