Solar vacuum tube specification:1. model : 58/1800
2. Tube diameter : 58mm
3. Tube length : 1800mm
4. Glass thickness: 1.6mm
5. Glass material: borosilicate glass 3.3
6. Absorber coating : Cu/ ALN-SS / ALN . three target coating .
7. Vacuum degree: 0.0035Pa
8. Absorption rate : 0.93
9. Emission rate : 0.06
10.Weight:2KGSpecification:StructureAll-glass double-tube co-axial structureGlass materialHigh borosilicate 3.3 glassExternal pipe diameter and thicknessdia.=47±0.7mm &=1.6mm dia.=58±0.7mm &=1.6mmdia.=70mm &=2.0mmInternal pipe diameter and thicknessdia.=37mm &=1.6mm dia.=47mm &=1.6mmdia.=58mm &=1.6mmPipe length1500Home Hardware mm 1600mm 1700mm 1800mm1900mm 2000mmAbsorptive coating propertyStructureAL/AL-ALN(H)/AL-ALN(L)/ALNSediment methodSingle target magnetron sputtering platingSpecific absorptionas=>=0.93(AM1.5)Emission ratio0.05~0.075(80°C±5°C)Vacuum tightnessP≤5.0x10-³PaIdle sunTool Packaging ning property parametersY= 220 ~ 260m²°C/KWSolar irradiation for obtaiPackage & Conveyance ning a preset water temperatureH≤4.7 MJ/ m²H=4.1~4.4 MJ/ m²H≤3.7 MJ/ m²H=3.1~3.4 MJ/ m²Average heat loss coefficientUlt=0.6~0.7W/( m².°C)
Our advantage:
1.Automatic Production line for Raw Glass Tube,High Quality of Raw Glass Tube and Advanced Testing Machine. Quarz Sand Pufity is over 99.2%,others only 98.2-98.4% which is more easier to broken.
Good Straightness and Ovality Accuracy.No stone or knob.2.Cleaning the inner tube in preparation for the process of coating later on.Using perified water not city water.3.Tube opening part is smooth, no sunken part or bubbles.4.We adopt automatic round vacuum device instead of individual vacuum device. Vacuum time is more than one hour. Vaccum: >3x10-3 Pa5.Absorption Rate:≥0.92 (AM1.5) ; Emission Rate:≤0.06 (80ºC±5ºC);Stagnation Temperature: Above 240ºC6.Coating Time: 1 Hour7.Round tip makes it not easy to get broken.8.Connecting extra pipe method guarantees the thickness of tube bottome, not easy to get broken.9.Advanced testing equipment from Germany and Japan.We: 1000-1200 pcs out of 1500 pcs are qualified.
Others: 1500 pcs ouTextile Machinery & Parts t of 1500 pcs areIntegrated Circuit qualified.10.Fast Delivery: 7 days for 5*40HQ; 10 days for 10*40HQ11.Temperature increases fast from 60-100ºC.