Specifications

Vacuum tube:
1.Strict quality inspection
2.Long life span
3.healthy and harmless
4.Good service

 

        

    

Three-high vacuum tube technology:

 

Structure				All-glass double-tube co-axial structure
Glass material				High borosilicate 3.3 glass
External pipe diameter&thickness				dia.=47±0.7mm&1.6mm  dia.=58±0.7mm&1.6mm  dia.=70±0.7mm&2.0mm
Internal pipe diameter&thickness				dia.=37±0.7mm  &=1.6mm    dia.=47±0.7mm  &=1.6mm    dia.=58±0.7mm  &=1.6mm
Pipe length				1500mm 1600mm 1700 1800mm 1900mm  2000mm 2100mm
				Structure		Cu/SS-ALN(H)/SS-ALN(L)/ALN
Absorptive coating property				Sediment method		3 target magnetron sputtering plating
				Specific absorption		as=0.90~0.93(AM1.5)
				Emission ratio		0.05~0.075(80°C±5°C)
Vacuum tightness				P≤5.0×10-³Pa
Idle sunning property parameters				Y= 260 ~ 300m²°C/KW
Solar irradiation for obtaining				H≤4.7 MJ/ m²(dia.58)			H=3.7~4.2 MJ/ m²
apreset water temperature				H≤3.7 MJ/ m²(dia.47)			H=2.9~3.2 MJ/ m²
Average heat loss coefficient				Ult=0.4~0.6W/( m².°C)