solar vacuum tube factory 1.CE,ISO9001,CCC 2.USD 1.3-5.8per pc 3. 15Years Warranty for vacuum tube 4.OEM

   

  

Normal all glass vacuum tube    

 

Specification:
Structure		All-glass double-tube co-axial structure
Glass material		High borosilicate 3.3 glass
External pipe diameter and thickness		dia.=47±0.7mm  &=1.6mm    dia.=58±0.7mm  &=1.6mm
		dia.=70±0.7mm  &=2.0mm
Internal pipe diameter and thickness		dia.=37±0.7mm  &=1.6mm    dia.=47±0.7mm  &=1.6mm
		dia.=58±0.7mm  &=1.6mm
Pipe length		1500mm 1600mm 1700mm  1800mm1900mm 2000mm
Absorptive coating property		Structure		AL/AL-ALN(H)/AL-ALN(L)/ALN
		Sediment method		Single target magnetron sputtering plating
		Specific absorption		as=0.88~0.91(AM1.5)
		Emission ratio		0.05~0.075(80°C±5°C)
Vacuum tightness		P≤5.0×10-³Pa
Idle sunning property parameters		Y= 220 ~ 260m²°C/KW
Solar irradiation for obtaining a preset water temperature		H≤4.7 MJ/ m²		H=4.1~4.4 MJ/ m²
		H≤3.7 MJ/ m²		H=3.1~3.4 MJ/ m²
Average heat loss coefficient		Ult=0.6~0.7W/( m².°C)

 

 Solar water tube working principle:

 

 Certificate: 

 

 

 High borosilicate 3.3 glass tube for solar vacuum tubes: 

 

Technological process: 

 

 Workshop: 

 

Main Advantages of solar vacuum Tubes: 1.No scaling2.No blasting3.water-tight4.Anti aging5.low temperature-resistant6.high temperature-resistant7.Resistant to high temperature8.fast heat transfer9.high heat conductivity10.bearing pressure

  

All glass solar collector tubes,high efficiency heat absorbing (size available--diameter:47/58/70mm length:1.5/1.8/2.0/2.1m