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Solar Water Heater
--How it works
The design of this type uses the all-glass evacuated solar collector tubes as the heat absorb element. The high vacuum degree of the clearance between the outer and inner tube can reduce the heat emission which caused by convection and conduction to a very low level. All-glass evacuated tube transfers sun energy into heat energy by high absorption rate and low emittance rate of layer films. Depend on the different density between the hot water and the cold water, a cycle created in the tube which hot water ascending and cold water descending status. Keeping natural circulation like this, the water in the tank will be heated.
--Material1. Inner tank: SUS304-2B stainless steel2. Outer tank: Color steel/Stainless steel3. Insulation: Polyurethane4. Frame: 1.5 mm Galvanized steel
--Characteristics
1. Beautiful appearance, steady structure, higher grads.
2. Inner and outside water tank shell all are welded by argon arc.
3. The tubes and frame are adjustable, power bearing is average, and can assure the vacuum tubes to use long time.
Non-pressurized Solar Water Heater TECHNICAL DATA | |||
WATER STORAGE TANKS | |||
Material of out tank | High quality Painted steel/ Stainless steel. | ||
Material of inner tank | Food grade SUS304-2B stainless steel. | ||
Tank insulating layer | Imported polyurethane can conserve the heat for maximum 72 hours | ||
Inlet and outlet hole | Male G 1/2 | ||
Tank size | 420,460,470,475,480,500mm or Customer demand | ||
Welding: | Argon arc welding | ||
VACUUM TUBES | |||
Tube structure | All-glass double deck co-axial structure | ||
Glass material | High borosilicate 3.3 glass | ||
Outer tube dia. & thickness | Ø58±0.7mm; Glass thickness 1.6±0.15mm | ||
Inner tube dia.& thickness | Ø47±0.7mm; Glass thickness 1.6±0.15mm | ||
Tube size | 58*1800mm | ||
Absorptive coating property | Structure | AL/AL-ALN(H)/AL-ALN(L)/ALN or Cu/SS-ALN(H)/SS-ALN(L)/ALN | |
Sediment method | Single target or Three targets - magnetron sputtering plating | ||
Specific absorption | 0.90-0.93(AM1.5) / 0.93-0.96(AM1.5) | ||
Emission ratio | 0.05-0.075(800C±50C) / 0.04-0.06(800C±50C) | ||
Solar irradiation for obtaining a preset water temperature | Φ=58 H≤4.7MJ/m² | H=4.1-4.4MJ/m² / H=3.7-4.2MJ/m² | |
Vacuum tightness | 5.0×10¯³ Pa | ||
Idle sunning property parameters | 220-260 m².C/KW / 260-300 m².C/KW | ||
Average heat loss coefficient | ULT=0.6~0.7W/(M2.0C) / ULT=0.4~0.6W/(M2.0C) | ||
Resistant Hail | ≤25mm | ||
Useful life | 15 years | ||
BRACKET | |||
Bracket: | Stronger galvanized steel / Stainless steel/aluminium alloy | ||
Bracket angle: | 0,18,22,38,45 optional, pitched roof, flat roof optional. | ||
Fastening pieces: | Made of zinc-coated stainless steel.. | ||
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