Evacuated Solar Tube

Model:	58*1800
Brand:	Himin
Origin:	Made In China
Category:	Metallurgy , Mining & Energy / New Energy / Solar Energy
Label:	vacuum tube , solar tube , Himin Solar
Price:	-
Min. Order:	-

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Product Description

All glass evacuated tubes are the key component of solar collectors. The evacuated tube is similar to a conventional Dewar flask and consists of two borosilicate glass tubes, a glass with high chemical and thermal shock resistance. The outer side of the inner tube is coated with a sputtered solar selective surface. This coated inner tube is closed at one end and sealed at the other end to the outer tube. The annular space between the outer tube and inner tube is evacuated to virtually eliminate heat loss by conduction and convection.

All-Glass Evacuated SS-AlN Cermet Solar Collector Tubes is manufactured by using the interference absorption type of solar absorption layer, and the technology of “metallic-membrane plating”, such as SS and Al duplex metallic target sputter manufactured Cermet absorption layer etc.. It also adopts new interference absorption type of super low emission ratio and selective absorption membrane laye. Absorption layer possesses special stainless steel aluminum nitride, and has high temperature resistant. It will not shed even the glass has melted; Anti-damping, ageing-resistance and dry collection resistance; Low emission ratio, small thermal losses, it can still produce hot water when it is 300 below, and with longer life.

As we are very serious on the quality of our product, and we have very strict quality control system, it definitely cost us huge amount of funds, however it pays back to us with very strong reputation and solid brand recognition from the international solar market. Our customers are very satisfied with Himin’s quality, and most of them keep long-term cooperation relationships with Himin. We are granted the ISO 9000 Quality Control Certification, and according to its requirement, established a complete quality control system. Himin test center is granted the CNAS certification.

Physical Performance	Three Target
Absorptance of Selective Coating (AM1.5)	α≥93.5%
Emission of Selective Coating(80℃±5℃)	ε≤5%
Stagnation Parameter	Y≥290 ㎡℃/kW
Solar Radiance Exposure	H≤3.0MJ/㎡
Coefficient of Average Heat Loss	ULT≤0.50W/(㎡•℃)
Selective Coating Type	ALN/ALN-SS/CU
Vacuum Rate	P≤8.0×10^-4Pa
Solar Transmission Rate	τ≥0.90(AM1.5ISO9806-1:1994)
Maximum Strength	0.8Mp
Coefficient of Thermal Expansion	3.3×10^-6/k
Material of Glass	Borosilicate Glass 3.3
Withstanding Hailstone (Steel ball testing)	Defeat impact of 112g metal ball falling from height 450mm