Evacuated Solar Tube

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 = 240m²°C/kW Emission of Selective Coating(80°C±5°C): sh

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:

Supplier: Led bulb, tube light, panel light, decoration light, wall light, steel wires, steel plate, stainless steel plate, twisted wire rods, galvanized wires, wire mesh, site fencing, mosquito mesh, thread rods, rebar, twisted rods, t bar, nuts and bolts, hardware, pvc pipes, upvc pipes, api pipes, melamine, mdf board, plywood, film faced, shuttering, packing, core veneer, face veneer, hdf molded door skin, door filler, tubular particle boards, pvc boards, wpc boards, doors, block board, hard board, gypsum board, canopy, carpet, flooring wooden, bamboo, laminated engineering, tiles, granite tiles, granite blocks, black galaxy, wash basin, water closets, washbasins, ss sinks, faucets, furniture, pvc edge bending, crew, locks, pvc seals, silicone cartridges, shower enclosures, shower door hinges, handles, knobs, brackets, slides, nails, solar panels, flexible solar panels, solar power station, battery, inverters, rechargeable fans, lights, spring, 3ply disposable face mask, oxygen concentrator ,
Services: Buying office, oem, components sourcing, value added services
Buyer: In shell pecan nut, macadamia nut

Supplier: Led lighting, street light, flood light, industrial light, linear light, high bay light, pit light, canopy light, poles, solar panels, solar street light.
Buyer: Led, led driver, solar batteries, solar raw material.

Supplier: Solar evacuated tubes, solar vacuum tubes, solar collector, , solar water heater, solar manifold

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.

The tubes are made from low emissivity borosilicate glass (glass with a very low iron content that has superior durability and heat resistance ) with an all-glass seal and they employ AL/N on AL selective coating, which enables the use of the whole solar energy spectrum to generate heat; this produces greater thermal efficiency in bright sunshine but also produces high efficiency in overcast or diffuse sunlight conditions. Further, the tubes are evacuated and have a barium getter (vacuum indicator) which changes color from silver to white if a tubes vacuum has been compromised. An examination of the tubes shows that the outside is actually 2 layers of glass and a vacuum has been created between them. A good way to demonstrate this would be to fill an empty tube with very hot water and notice that it does not even get warm as you hold the tube in your hands. That is because of the thermos effect¡± created by having a vacuum between the layers of glass. Carton with foam inside.