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0086-519-86393722
FAX  
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0086 18015881798

SKI SOLAR PRODUCTS

Vacuum Tube

Contact Us:

Tel: 0086-519-86398768 / 86393722
Fax: 0086-519-86382237
E-mail: [email protected]
Skype: sara.zhu1
whatsapp: 0086 18015881798

Product description

The vacuum tubes consists of two glass tubes which are fused together at one end. The inner tube is coated with a selective surface that absorbs solar energy well but inhibits radiative heat loss. Vacuum tubes adopt borosilicate glass and can resist 25mm hail.

Technical data

Model

1.5m/47standard

1.8m/58standard

Length

1.5m

1.8m

Outer tube diameter

47mm

58mm

Inner tube diameter

27mm

47mm

Glass thickness

1.5mm

1.5mm

Material

Borosilicate Glass 3.3

Borosilicate Glass 3.3

Absorptive Coating

AL/N/AL

AL/N/AL

Absorption coefficient

>90%

>90%

Emission coefficient

<10%

<10%

Stagnation Temperature

>200℃

>200℃

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