Non-pressurized solar water heater

Non-pressurized Solar Water Heater Materials of Non-pressurized Solar Water Heater 1.Inner water tank:SUS304-2B imported food-grade stainless steel 2.Outer tank material:galvanized plate,color-coated sheet,SUS304BA stainless steel 3.Vacuum tube:borosilicate glass,with aluminun absorption layer of magnertron sputtering 4.Thickness of insulation layer: 55-65mm computerized pressurizing and foaming of polyurethane 5.Bracket materials:galvanized sheet with electrostatic plastic-sprayed/stainless steel/aluminum alloy 6.Fasteners:stainless steal screw 7.Sealing ring:polymer silicone rubber 8.Reflective angle:45º golden angle Testing data of Non-pressurized Solar Water Heater The vacuum tube of our solar water heater has high absortion rate and low emission rate 1.Abosortion rate:0.90-0.93(AM1.5) 2.Emission rate:0.05-0.075 3.vacuum tightness:P≤5.0*0.0001Pa 4.stagnation tightness:200 5.average heat loss coefficient:Ult0.8W(.) 6.heat preservation:72 hours 7.hail resistance:20-30mm Specification of solar water heater of Non-pressurized Solar Water Heater solar vacuum tube Size/mm Abosorber Area() Capacity(L) Loading Qty/Sets 20GP 40GP 40HQ Φ47*1500mm*15 1.5 80 72 154 194 Φ47*1500mm*18 1.79 100 62 135 170 Φ47*1500mm*20 1.98 120 58 125 158 Φ47*1500mm*24 2.38 150 50 108 136 Φ47*1500mm*30 2.96 180 39 85 106 Φ58*1800mm*15 2.09 125 46 100 125 Φ58*1800mm*18 2.49 150 38 85 106 Φ58*1800mm*20 2.77 180 36 78 98 Φ58*1800mm*24 3.32 200 30 65 80 Φ58*1800mm*30 4.03 240 25 54 68 Φ58*1800mm*36 4.96 300 20 45 55Non-pressurized Solar Water Heater