copper coiled solar water heating system

  Pressurized solar water heating system Pre-heated Cooper coil solar water heating system   Specification: Inner tank:  stainless steel 304-2B , 0.4mm thickness, dia, 360mm Outer tank: Colour steel/stainless steel 201, 0.4mm thickness, 460/470/480mm Insulation layer: 50-60mm polyurethane foam Vacuum tube: common tube, three targets, three cavities Bracket: stainless steel 202 /galvanized steel 1.5mm Capability: 150L,200L,250L,300L,360L You will get more cleaner water through the copper coiled inner tank   Working principle: One copper coiled is installed inside of the tank as the heat exchange.,  When water flows into the copper coil,it absorps the heat of the water in the tank via the copper coil   therefore the water tank is just a heat storage tank.              Pictures show:   copper coil:       inner tank:     vaccum tube: