Gold Member Since 2013
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Zhongyi Solar Technology Co., Ltd.

Solar Water Heater Vacuum Tube, Water Heater Vacuum Tube, Solar Water Heater Tube manufacturer / supplier in China, offering Solar Water Heater Vacuum Tube, 1300W&15m Head Solar DC Centrifugal Pump Solar Heater, 5gallons Flow Solar DC Submersible Pump (screw centrifugal system) and so on.

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Solar Water Heater Vacuum Tube

FOB Price: US $1.98 / Piece
Min. Order: 1,000 Pieces
Min. Order FOB Price
1,000 Pieces US $1.98/ Piece
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Production Capacity: 10000PCS/Month
Transport Package: Carton Box+ Form
Payment Terms: T/T

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Basic Info
  • Model NO.: 58x1800MM
  • Interior Material: Copper
  • Certification: CE
  • Trademark: SUN-SEEKER
  • Pressure: Pressurized
  • Collector Components: Glass Vacuum Tube
  • Size: 58X1800mm
  • Origin: Haining
Product Description
Vacuum tube material:
1. Borosilicate glass 3.3, three layer (AL-N-AL) absorb coating for tube
2. Borosilicate glass 3.3, three layer Cu SS-ALN ( H ). SS - ALN (L )/ ALN absorb coating for tube
3. Model: We have Φ 47x1.5M, Φ 58x1.8M, Φ 70x2M
Solar Water Heater Vacuum Tube
tube  standard tube(normal tube) Tri-tube(Three high tube)
Specification 4715 5818 4715 5818
Length 1500mm 1800mm 1500mm 1800mm
Outer tube diameter 47mm 58mm 47mm 58mm
inner tube diameter 37mm 47mm 37mm 47mm
weight 1.3kg 2.2kg 1.3kg 2.2kg
Glass thickness(inner tube) 1.6mm 1.6mm 1.6mm 1.6mm
Glass thickness(outertube) 1.8mm 1.8mm 1.8mm 1.8mm
Glass material Borosilicate Glass3.3 Borosilicate Glass3.3 Borosilicate Glass3.3 Borosilicate Glass3.3
Coating material AI-N-AI AI-N-AI AIN-SS-Cu AIN-SS-Cu
Coatin position  Outer surface of inner tube Outer surface of inner tube Outer surface of inner tube Outer surface of inner tube
Deposition Method DC reactive sputtering DC reactive sputtering DC reactive sputtering DC reactive sputtering
Absorption ratio ≥ 91% ≥ 91% ≥ 94% ≥ 94%
Reflection ratio ≤ 7% ≤ 7% ≤ 6% ≤ 6%
Vacuum degree 3.0T2-3pa 3.0T2-3pa 8.0T2-3pa 8.0T2-3pa
Thermal expansion 3.3*10-6/ 3.3*10-6/ 3.3*10-6/ 3.3*10-6/
Stagnation parameter 220m2/kw 220m2/kw 220m2/kw 220m2/kw
Sloar rediance exposure for
obtaining a preset water temperature
4.6MJ/M2 4.4MJ/M2 3.9MJ/M2 3.6MJ/M2
Average heat
loss coefficient
0.75w/(m2. ) 0.73w/(m2. ) 0.67w/(m2. ) 0.62w/(m2. )
Max pressure 0.6Mpa 0.6Mpa 0.6Mpa 0.6Mpa
Minimum temperature
  endurable
-35 -35 -40 -40
Hailstore endurable
  (diameter)
Less than D25mm Less than D25mm Less than D25mm Less than D25mm
Maximum temperature
  endurable
270 270 300 300
Lifetime 15 years 15 years 15 years 15 years
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