Vacuum tubes consists of two glass tubes outer tube and inner tube
Outer tube is made of extremely strong transparent borosilicate glass and adopted magnetism control
Inner tube is made of borosilicate glass
Excellent solar heat absorption
Intercept efficiency: > 93%
Low heat reflection properties: < 0.86%
Main types of vacuum tube: 47 x 1,500, 58 x 1,800, 58 x 2,000 and 70 x 2,100mm
Stagnation temperature: 180 to 190 degrees Celsius
Heat insulating time: 72 to 80 hours
Hail resistance: 25mm
Description:
All glass evacuated tubes are the key component of solar collectors
The evacuated tube is similar to a conventional Dewar flask and consists of two borosilicate glass tubes, a glass with high chemical and thermal shock resistance
The outer side of the inner tube is coated with a sputtered solar selective surface
This coated inner tube is closed at one end and sealed at the other end to the outer tube
The annular space between the outer tube and inner tube is evacuated to virtually eliminate heat loss by conduction and convection
Key Contact:
Mr
Zhou,
David
Sales Manager
Foreign Trade/Export
Mr
Ding,
Zhenhua
General Manager
Sales Managememt
Ms
Wu,
Sky
Foreign trade assistant
Export department
Supplier and product information updated July 07, 2008. Global Sources verifies information published here via regular supplier visits.
This member has been verified by Global Sources.Learn more Verified suppliers are visited by Global Sources at least 3 times before their products are listed. This ensures that information on suppliers and products-on-offer is accurate.
){kind=link}
){kind=link}
){kind=link}