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All-glass Solar Vacuum Tube

INTRODUCTIONVISION all-glass vacuum tube is mostly used as absorber for solar water heaters and solar collectors.Vision Solar manufactures various all-glass vacuum tubes such as single-target tube, three-target purple tube, super heat tube,

INTRODUCTION
VISION all-glass vacuum tube is mostly used as absorber for solar water heaters and solar collectors.
Vision Solar manufactures various all-glass vacuum tubes such as single-target tube, three-target purple tube, super heat tube, three-cavity tube, magnetic tube, eccentric tube, spiral tube, both-side open tube, etc.
SPECIFICATION
Tube diameter: 47MM, 58MM, 70MM
Tube length: 1500MM, 1800MM, 2100MM
Tube structure: All-glass double tube
Glass material: High borosilicate 3.3 glass
Absorber coating: AL/AL-ALN & Cu/SS-ALN
Absorption: 0.93 ~ 0.96 (AM1.5)
Emission: 0.04 ~ 0.06 (80±5 ℃)
Vacuum degree: ≤5.0x10-3 Pa
Stagnation temperature: 260 ~ 300 ℃
Average heat loss: 0.4 ~ 0.6 W/(m2* ℃)
Pressure-endurance: 1.0 Mpa
Hail Resistance: 25 MM

solar vacuum tube, solar evacuated tube, glass vacuum tube

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