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Triple Vacuum Evacuated Glass Tube--58x1800mm

Model: 58x1800mm

Triple Vacuum Evacuated Glass Tube, solar water heater, ateliving, copper heating pipeJust like an automobile engine, the computer CPU,

vacuum tube is the solar water heater. Its performance lies on the coating technology, The triple evacuated tube rise the heat more than 12%
1) High temperature: by special interference-layer it could bear the high temperature reach to 500℃, and the coating will not shed and aging.
2) Super anti-cold: Super-copper launches mirror, low reflectance, little heat loss ,good absorber results in cold environment, also can generate hot water.
3) Efficient absorption: High absorption is 92%, reflection reduces 65% heat increases 12% Higher temperature, more hot water.

Each evacuated tube consists of two glass tubes. The outer tube is made of extremely strong transparent borosilicate glass, that is able to resist impact from hail up to 25mm in diameter. The inner tube is also made of borosilicate glass, but coated with a special selective coating (Al-N/Al) which features excellent solar heat absorption and minimal heat reflection properties. The air is withdrawn (evacuated) from the space between the two glass tubes to form a vacuum, which eliminates conductive and convective heat loss.

  • Excellent performance of absorbing, but low heat loss, especially adapted to sever cold regions, (super heat preservation).
  • Excellent resistance of burst.
  • Excellent resistance of corrosion, long life span ( up to 15 years)
  • Reducing the fouling on the tube wall, keeping water clean.

Triple Vacuum Evacuated Glass Tube, solar water heater, ateliving, copper heating pipe

Triple Vacuum Evacuated Glass Tube, solar water heater, ateliving, copper heating pipe

solar thermal glass tubes take a beating

More info please see below technical info articles:

Key Specifications/Special Features:

  • Glass material: concentrated borosilicate glass
  • Absorber plate: copper
  • Absorption coefficient: >0.93
  • Emissivity: less than 0.08
  • Starting temperature: <25°C
  • Maximum temperature: 250°C
  • Freeze-resistant: -50°C
  • Service lifespan: 15 years
  • Weight of single tube: 1.5/2.0kg

Triple Vacuum tube Technical Specifications

Model

ATE47

ATE58

Length

1500mm

1800mm

Outer tube diameter

47mm

58mm

Inner tube diameter

37mm

47mm

Weight

1.3kg

2.2kg

Glass thickness

1.7mm

1.7mm

Material

Borosilicate Glass 3.3

Borosilicate Glass 3.3

Absorptive coating

Graded A1/N/A1

Graded A1/N/A1

Vacuum degree

P<5*10 -3 Pa

P<5*10 -3 Pa

Thermal expansion

3.3*10 -6 /°C

3.3*10 -6 /°C

Insolation Temperature

>200°C

>200°C

Absorptance

>94%

>94%

Emittance

<8%

<8%

Heat loss

<0.8W/( m² °C)

<0.8W/( m² °C)

Maximum strength

0.8Mpa

0.8Mpa

Resist cold

-50 °C

-50 °C

Resist hailstone

Ø 25mm

Ø 25mm

Resist wind

30m/s

30m/s

Start-up temperature

<=25°C

<=25°C

Effective collector area

0.0966 m²

0.1350 m²

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