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Quick Details

  • Place of Origin: Shandong, China (Mainland)
  • Brand Name: RR solar tubes
  • Model Number: OS-SG series
  • Type: Non-Pressure
  • Application: Water Heater
  • Pipe Material: Glass

Packaging & Delivery

Packaging Details Wooden box packing with foam sheet.
Delivery Time 10 days


solar energy collector using all-glass vacuum tube
1. made of pyrex glass
2. great capability of solar energy collecting


Glass tube solar vacuum tubes: 
1.Coating layer is CU-SS-ALN 
2.It can greatly improve the efficiency of collection.

Three target solar vacuum tubes specification:

1. Coating layer is CU-SS-ALN
2. It can greatly improve the efficiency of collection.

3. It can still work at the temperature below to -30°C

4. It has a higher absorption and lower emission than ordinary tubes


RR Trade Co.
OS-SG seriesSingletargetcoating solarvacuumtubeThree target coating solar vacuum tube
Tube structureAll-glass double-tube co-axial structure
Glass materialBorosilicate 3.3glass
Outer tube diameter and glass thicknessΦ=47±0.7mm &=1.6mm ±0.15mm
Φ=58±0.7mm &=1.6mm ±0.15mm
Φ=70±0.7mm &=2.0mm ±0.15mm
Inter tube diameter and glass thicknessΦ=37±0.7mm &=1.6mm ±0.15mm
Φ=47±0.7mm &=1.6mm ±0.15mm
Φ=58±0.7mm &=1.6mm ±0.15mm
Absorptive coating propertypropertyStructureGlass/AL/AL-ALN(H)/AL-ALN(L)/ALN       Cu-SS-ALN
Sediment method1 target magnetron sputtering3 Targets magnetron sputtering
Absorption ratioα=0.90~0.92(AM1.5)α=0.93~0.96(AM1.5)
Emission ratioε=0.09~0.1(80°C±5°C)ε=0.05~0.075(80°C±5°C)
Vacuum tightness5.0×10-3 Pa
Heat loss0.6-0.76W/(m2.°C)0.4 -0.6W/(m2.°C)
Resist cold-20°C-25°C
Resist high temperature220°C250°C
Service life12 Years15 Years



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