Low Pressure Solar Water Heater 100L 150L 200L 300L

Basic Info.Model NO.STWarranty3 YearsMax. Capacity>200LStructureCompact TypePressureUnpressurizedInterior MaterialStainless SteelCollector ComponentsGlass Vacuum TubeCompositionTank InsulationCertificationCE, ISO9001Vacuum Tubes58*1800mmInner TankSUS304, 0.4mm ThicknessOuter TankPVDF, 0.4mm ThicknessBracketGalvanized Steel, 1.5mm ThicknessInsulationPolyurethane Foam, 50mm ThicknessInlet /Outlet3/4"Capacity100L to 360LTrademarkSuntask / OEMTransport PackageCartons /Wooden Pellet /Wooden BoxSpecificationST-100L, 120L, 150L, 200L, 250L, 300L, 360LOriginZhejiang, ChinaHS Code8419191000Product Description Suntask Compact Non Pressure Solar Water Heaters: ST model  Features:1. Super Anti-erode outer tank: Outer tank is made by PVDF. Best anti-erode material. Especially for the seaside area, such as East South Asia, etc.2. Feeding water automatic: With a special design, feeding water automatically, and ensure the outlet water as a stable temperature.Working Principle Compact non-pressure solar water heater relies on the natural circulation of the water between solar tubesand the water tank. Thermosyphon systems work on the principle of heat rising. The water enters the bottom of the collector and rises to the tank as it warms. The advantage of this system is that solar heat is stored in 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 for 72 hours without heat loss.Product DescriptionStorage TankInner TankSUS304-2B food grade stainless steelInner Tank Thickness0.4mmOuter TankPVDF 0.4mm which is good at anti corrosionInsulating LayerPolyurethance Foam 50mmVacuum TubeMaterial of the glass tubeBorosilicate glassAbsorptive CoatingGrade ALN/AIN-SS/CULength of Outer Tube1800mmLength of Inner Tube1755mmOuter Tube Diameter58mmInner Tube Diameter47mmGlass Thickness1.6mmDistance between two tubes 75mmThermal Expension3.3*10-6/ºCAbsorption coefficient 95± 1 %Thermal emsision coefficient5 ± 1 %VacuumP≤5.0*10-3 PaStagnation Temperature>200°CAverage heat loss