Electric Circuit Components & Parts

Our product range contains a wide range of Glass Vacuum Tube

Glass Vacuum Tube

Tube structure All-glass double dock co-axial structure
Glass material High borosilicate 3.3 glass
Outer tube diameter and glass thickness Φ47±0.7mm:Glass thickness 1.6±0.15mm Φ58±0.7mm:Glass thickness 1.6±0.15mm Φ70±0.7mm:Glass thickness 2.0±0.15mm
Inner tube diameter and glass thickness Φ37±0.7mm:Glass thickness 1.6±0.15mm Φ47±0.7mm:Glass thickness 1.6±0.15mm Φ58±0.7mm:Glass thickness 1.6±0.15mm
Tube length 800mm, 1200mm, 1500mm, 1600mm, 1800mm, 1900mm, 2000mm, 2100mm etc
Absorption coating property Coating material
CU/SS-ALN(H)/SS-ALN(L)/ALN Sediment method
Three Target magnetron sputtering plation Absorptivity
Absorptivity: a =0.92~0.96(AM1.5) Emission ratio
Emission: ε=0.04~0.06(800C± 50C) Vacuum degree
P≤5.0 × 10-3 (PA) Stagnation temperature (temperature inside of empty evacuated tubes)
260~3000C
Average heat loss ULT0.4~0.6W/(m2* 0C)
Hail resistance Φ25mm
Pressure-endure 1MPa

The vacuum tube is the core component of the solar water heater. Its performance is depends on the merits of the film coating technology. Our company using the new gradient coating technology produce three- target vacuum tube and it let the heat gain more than 4%. Increasing intelligent automatic cut Road equipment to ensure the pipe accurately: The reverse osmosis deionized water equipment to protect the inner tube highly clean and control the vacuum process technology to ensure the high vacuum tube collector efficiency and resistance to attenuation performance. Three target coating process, the absorption layer with unique stainless steel aluminum nitride, ultra-pure copper mirror as reflective layer.

The production of three-target vacuum tube has three major advantages:

High temperature resistant absorption layer special stainless steel aluminum nitride,
resistance to high temperature can reach 500⁰C.
film does not fall off, not aging.

Resistance to cold ultra pure copper emission mirror, low reflection, heat loss is small, cold environment set thermal effect is good, so have hot water.

Efficient absorption high absorption ratio 96%, reflectance is reduced by 65% and heat gain increased by 4% water temperature is higher, more hot water.

Suitable model: ordinary solar energy water heater (see picture), project heater solar energy water heater (see picture)

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