OEM solar water heater

waterheater Materials ofwater 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 sputteringØ47×1500mm/ Ø58×1800mm/Ø70×2000mm 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 ofwater heater The vacuum tube of ourwater 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 8.idle sunning property paramerers: Y=220-260./KW9.avetage heat loss coefficient: ult=0.6-0.7w(.)it means the temperature in the water tank is arange from 50 to 95 degree.it resists 25mm hail and the using life can last 15 years, temperature when exposed to sun without waterCertificate ofwater heater.have passed ce , iso9001:2000,ccc and have got several patent certificates 1. Because of the larger proportion of hot water than cold water, cold water flows downward and hot water goes upward. The water will be heated continuously between water tank and vacuum tube. In other words, hot water always floats on cold water. 2. The hot-water flows to the water tank from the vacuum tubes. Because of the proportion, cold water flows to vacuum tubes from the water tank. 3. The cold water is heated in vacuum tubes. After it becomes hot water, it flows to water tank again. The water circulates constantly between water tank and vacuum tubes; the cold water in water tank will be hotter and hotter. 4. Finally, all cold water will be heated to be hot water. This is the heating course of cold water. best design water heater