Vacuum glass tube for solar geyser sabs

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Vacuum glass tube for solar geyser sabs

Solar Vacuum Tube Material and Features:                                                              

It's the application to the solar industry of heat pipe. It's the key component of solar water heater, which has great significance to the efficiency and life span of solar water heaters.

• Certifie by solar keymark EN****5,SRCC and CE;
• Adopt high quality heat pipe
• Copper heat pipes for rapid heat tansfer;
• Wrking temperature:**0 to **0°C;
• Max working pressure:**0Kpa;
• Easy plug-i installation,both flat and inclned roof instllation;
• Corrosion resistant silver brazed coper header;
• Alumnum frame ad casing;
• *-targets evacuated vacuumtube,coating Al-N/SS/Cu;
• Stable solar conversion throughou the day ( tube pssively track the sun)
• No freezing,No bombing,No Scaling;
• Used in domestc heating and proect such as chools,hotels,hospitable,swimming pools and so on; 
   

  Tube structure		All-glass double-tube co-axial structure
  Glass material		Borosilicate 3.3glass
  Outer tube diameter and glass thickness		Φ =*7± 0.7mm & T=1.6mm ± 0.*5mm Φ =*8± 0.7mm & T=1.6mm ± 0.*5mm
  Inter tube diameter and glass thickness		Φ =*7± 0.7mm & T=1.6mm ± 0.*5mm Φ =*7± 0.7mm & T=1.6mm ± 0.*5mm
  Tube length		***0mm, ***0mm
  Absorber coating	Coating material	AL-N/SS/Cu
  	Sediment method	Three Targets magnetron sputtering plating
  	Absorption	a: ≥*2%(AM1.5)
  	Emittance	ε ≤ 3.4% (*0° C± 5° C)
  Vacuum degree		P ≤ 5.0× *0 *3 Pa
  Transmittance of glass tube		T ≥ *1% (AM1.5)
  Stagnation parameter		Y: > 2*8 m² ° C/kw
  Average heat loss		ULT≤ 0.60W/(m² *° C)
  Hail resistance		Φ *5 mm
  Pressure-endure		0.8 Mpa
  Temperature-endure		**0° C
  Life		> *5 years

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