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vacuum tube

good quality ,reliable performance , reasonable price - more info check here: http://www.sourcingappliances.com/vacuum-tube-30169718/

Quick Brief

Certification: CE

Product Features:

good quality ,reliable performance , reasonable price

Business Terms:

Price Terms:FOB,CIF,EXW

Payment Terms: T/T,Western Union,MoneyGram,L/C

Minimum Order: Negotiatable

Delivery Port: Customized

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vacuum tube
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Product Packagings & Delivery Terms:

Packaging Detail: Carton

Delivery Detail: within 15 days after receive the prepaid payment.

Specifications and Product Details:

evacuated tube, for solar collector, solar water heater

StructureAll-glass double-tube co-axial structure
Glass materialHigh borosilicate 3.3 glass
External pipe diameter and thicknessΦ=58±0.7mm &=1.6mm
Internal pipe diameter and thicknessΦ=47±0.7mm &=1.6mm
Pipe length1800mm
Absorbing coating propertyStructureCu/SS-ALN(H)/SS-ALN(L)/ALN
3 target magnertron sputtering plation
Sediment methodas=0.93~0.96(AM1.5)
εh=0.04~0.06(80±5)
Specific absorption
Emission ratio
Vacuum tightnessP≤5.0X10-3Pa
Idle sunning property parametersY=260~300m2./KW
Solar irradiation for obtaining a preset water temperatureH≤4.7MJ/m2(Φ58)H=3.7~4.2MJ/m2
H=2.9~3.2MJ/m2
H≤3.7MJ/m2(Φ47)
Average heat loss coefficientULT=0.4~0.6W/(m2.

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