Standard Evacuated Tube for Solar Collector

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1) The standard evacuated tube for solar collector has high quality and reasonable price.
2) It is environmental friendly.
3) The product adopts nice design.

Technical Data

Tube structure		All-glass double-tube co-axial structure
Glass material		Borosilicate glass 3.3
Outer tube diameter and glass thickness		Φ=47±0.7mm thickness=1.6mm ±0.15mm Φ=58±0.7mm thickness=1.6mm ±0.15mm Φ=70±0.7mm thickness=2.0mm ±0.15mm
Inter tube diameter and glass thickness		Φ=37±0.7mm thickness=1.6mm ±0.15mm Φ=47±0.7mm thickness=1.6mm ±0.15mm Φ=58±0.7mm thickness=1.6mm ±0.15mm
Tube length		1200mm,1500mm,1600mm, 1800mm,1900mm,2000mm,2100mm
Absorber coating	Coating material	AL-ALN
	Sediment method	Single target magnetron sputtering plating
	Absorptivity	a:0.88~0.90(AM1.5)
	Emittance	ε≤7.5% (80℃±5℃)
Vacuum degree		P ≤5.0×10-3 Pa
Transmittance of glass tube		T ≥0.89(AM1.5 ISO9806-1:1994)
Stagnation parameter		Y ≥200 m2℃/kw
Average heat loss		ULT:0.65~0.75W/( m2*℃)
Hail resistance		Φ25 mm
Pressure-endure		0.6 Mpa

Related Names
Vacuum Tube of Solar Thermal Collector | Low Conduction Heat Loss Evacuated Pipe | Electron Tube Collector Core

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