Product Info:
Model No: SET-01
Diameter of Outer/Inner Tube: 47/37, 58/47
Length of Tube: 1500/1800, 1800
Thickness of Tube 1.60±0.15, 2.0±0.15 2.2±0.15
Technical Specifications:
Iten Specification: Three Targets (operation Temp. around 100°C)
Absorptance of Selective Coating (AM1.5): Alpha >= 92.5%
Emission of Selective Coating(80°C±5°C): sh <= 6.5%
Stagnation Parameter Y >= 240m²°C/kW
Emission of Selective Coating(80°C±5°C): sh <= 6.5%
Solar Radiance Exposure H <= 3.0MJ/m²
Average Heat Loss Coefficient ULT=0.65W/(m²•°C)
Selective Coating Material: SS-AL-N/Cu
Application field Hot water
Vacuum Quality P=3x10-3Pa
Pressure-proof: 0.6MPa
Impact Resistance Steel Ball Test: steel ball with diameter of 30mm fall on the evacuated tube vertically from 450mm height, the evacuated tube is not damaged.
Transmittance of GlassTube t=0.89 (AM1.5ISO9806-1:1994)
Material of GlassTube Borosilicate Glass 3.3
Knots of GlassTube Knots(Ø=1mm) =2 pieces in area of 10mmx10mm; Knots(Ø=, 2.5mm) = 5 pieces in the whole tube.
Specifications:
All glass evacuated tubes are the absorbing component of the solar water heater. They absorb solar energy and convert it into energy used for water heating. Each evacuated tube consists of two glass tubes which are made from extremely strong borosilicate glass. The outer tube is transparent, allowing light rays to pass through with minimal reflection. The inner tube is coated with a specially selected coating which features an excellent solar-radiation absorption rate and minimal reflection properties. The top of the two tubes are fused together and the air contained in the space between the two layers of glass is pumped out while exposing the tube to high temperatures. This "evacuation" of the gasses forms a vacuum, which is an important factor in the performance of the evacuated tubes.
Evacuated tube solar collectors still provide an excellent result on a cloudy day. This is because the tubes are able to absorb the energy from infrared rays, which can pass through clouds. Wind and low temperatures also have less effect on the function of the evacuated tubes when comparing them to the flat plate solar collectors. This comes due to the insulating properties of the vacuum.
As the key components of the solar collector, the evacuated tubes have a production that is optimized in geometry and performance.The tubes are composed of two concentric glass tubes with in each case are half spherically closed on one side and fused together on the other side.
In order to make the solar power usable, the internal glass tube is provided on its external surface with an environmentally friendly, highly selective layer and is thus designed as an absorber. This coating is thus protected within the vacuum gap. It is an aluminum nitrite sputter layer which is characterized by very low emission and very good absorption.
Packaging Details
Specification Quantity / Carton 19 ft DCM
47/1500mm 15 pcs 4005 pcs
47/1800mm 15 pcs 3000 pcs
58/1800mm 10 pcs 2000 pcs.
The evacuated tube is a product with improved geometry and performance and consists of two concentric glass tubes which are sealed in a semi-circular shape on one side and are joined to one another on the other side. The space between the tube is evacuated and then hermetically sealed (evacuated insulation). To use solar energy, the internal glass coated with an environmentally friendly, highly selective la er on the outside, thus turning it into an absorber. The coating is protected in the evacuated space. The aluminum nitride sputter coating used is characterized by an ex u extremely low emission and a high absorption rate
Skylight Evacuated Tube Specifications: 1. Length (nominal):1800mm/1600mm 2. Outer tube diameter: 58mm/47mm 3. Inner tube diameter: 47mm/37mm 4. Glass thickness:1.8mm/2.0mm 5. Thermal expansion: 3.3x10-6í¦C 6. Material: Borosilicate Glass 3.3 7. Absorptive Coating: Graded Al-N/Al 8. Absorptance: v>93% (AM1.5) 9. Emittance:
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Buyer: Led, led driver, solar batteries, solar raw material.
Supplier: Solar evacuated tubes, solar vacuum tubes, solar collector, , solar water heater, solar manifold
Supplier: Solar water heater, the evacuated tube
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1.All Glass Vacuated Tube All glass evacuated tubes are the key component of solar collectors. The evacuated tube is similar to a conventional Dewar flask and consists of two borosilicate glass tubes, a glass with high chemical and thermal shock resistance. The outer side of the inner tube is coated with a sputtered solar selective surface. This coated inner tube is closed at one end and sealed at the other end to the outer tube. The annular space between the outer tube and inner tube is evacuated to virtually eliminate heat loss by conduction and convection. We use the tubes which use the successfully developed innovative Advanced Solar Selective Coatings in commercial scale, which achieve the highest thermal efficiency and good thermal stability. Solar selective coatings absorb most solar radiation while simultaneously suppressing the thermal emittance loss from coating surfaces. They vary mainly in their optical property and thermal stability. Excellent results have been obtained by using DC magnetron sputtering technology. A solar absorbance of 0.94 - 0.96 with an emittance of 0.04 - 0.06 at 100 centigrade has been achieved. Models º¦47í-150 º¦58í-180 Weight 1.35í+0.12kg 2.29í+0.18kg Structure All glass coaxial double-layer tubes All glass coaxial double-layer tubes Outer tube diameter º¦47í+0.7mm º¦58í+0.7mm Inner tube diameter º¦37í+0.7mm º¦47í+0.7mm Outer Tube thickness 1.6í+0.15mm 1.8í+0.15mm Inner tube thickness 1.6í+0.15mm 1.6í+0.15mm Tubes length 1542í+4mm 1812í+4mm Material of coating AlN/AIN-SS/Cu AlN/AIN-SS/CU Absorptance 0.94~0.96 0.94~0.96 Emittance 0.04~0.06 0.04~0.06 Vacuum Pí_5í-10-3pa Pí_5í-10-3pa Transmittance of Outer Tube 0.91 0.91 Stagnation temperature (height) 270~300íµ 270~300íµ Heat-loss coefficient í_0.6w/ m2*íµ) í_0.6 w/ (m2*íµ). Bearing hailstone ability hailstone diameterº¦25mm hailstone diameterº¦25mm. Pressure-endure ability 1MPa 1MPa.
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