Replacement Solar Evacuated Tubes

Solar Evacuated Heat Tube

Note the silicon rubber seal and red copper heat tube.

This price is for 4 solar evacuated tube heat pipes for replacement. Replaces 4 tubes in your solar thermal collector.

List Price: $160.00
Our Price: $132.00
Sale Price: $132.00
You Save $28.00

Product Code: NN 1143-ET

Qty:

Technical Specs

How it Operates

nuSun Solar Heat Tube Specifications

MODEL

Type GB

Double-layer concentric boronsillicate glass tubes

Tube	Inner	Outer
Glass thermal expansion coefficient	3.3*10-6/℃	3.3*10-6/℃
Diameter of outer tube		58mm
Diameter of absorber tube	47mm
Thickness	1.5mm(±0.1mm)	1.7mm(±0.1mm)
Transmittance of outer tube		0.91
Length	1600mm	1800mm
Solar selective absorbing coating	Al-N/Al
Absorptance (AM1.5)	0.92
Vacuum	≤5*10-3Pa	≤5*10-3Pa
Stagnation Temperature	230℃
Heat loss coefficient	≤0.70W/(m2*℃)
Hailstone resistance		hailstone diameterФ25mm
Pressure-endure ability	1mPa

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