Vacuum Tube for Medium Temp. Parabolic Trough Solar System

• Customization: Available
• Certification: ISO
• Concentrating: Yes
• Model NO.: RT-2000-125/70
• Working Temperature Range: Medium Temperature
• Type: Vacuum Solar Collector
• Application: Solar Thermal, Air Conditioning System, Parabolic Trough Solar Collector
• Pipe Material: Stainless Steel
• Outer Tube: High Borosilicate 3.3glass
• Inner Tube: SUS304
• Length: 2000mm
• Diameter of Outer Tube: 125mm
• Diameter of Inner Tube: 70mm
• Operating Temperature: 200~300 Degree Centigrade
• Glass Tube Light Transmittance: 96%(Am1.5)
• Absorption Rate: 95.5%
• Emission Ratio: 10%
• Life Span: 25 Years
• Transport Package: Export Standard Packing
• Trademark: Gaia Solar / OEM
• Origin: Dezhou, Shandong
• HS Code: 8419901000
• Production Capacity: 10pieces/Day

Product Description

Vacuum tube for medium temp. parabolic trough solar system



RT-2000-100/40

1. Coated Glass-Steel Vaccum Tube used for parabolic trough solar collector 
2. Using Kovar make connection
3. Can be 2000 in length
4. Diameter: 125/70mm
5. Thickness: 2mm/3mm
6. Temperature can reach: 200~300 Degree centigrade
7. Can produced in large quantity already





Some test data on the Receiver Tubes:

Density fo axially heat flow ≥ 28MW/m2

Total radiation activity α: 1.4*10-1Bq/g

Effective service life ≥ 150000h

Heat flux ≥ 14MW/m2 ºC

Radiation activity - β: 1.7*10-1Bq/g

 



Installation Notes of Receive Tube

1. Receiver tube should be avoided direct solar radiation, in order to avoid thermal expansion thus affecting the precision of installation.
2. Need to adopt supporting steel tube when the welding, to ensure that straightness in the best state.
3. Suggest using TIG welding to avoid weld spatter, if there is more splash, should protect the corrugated pipe and glass tube, do not let the splash fall on corrugated pipe and glass to cause air leakage or fired tube.
4. Pay attention to the nipple in welding and using, it should be installed towards to inner side of the collector.