Factory Direct Solar Evacuated Tube Collector
|FOB Unit Price:||US $2.3 US $2.2|
|Purchase Qty. (Pieces)||FOB Unit Price|
|Payment Terms:||L/C, T/T, Western Union|
- Model NO.: 58*2100-3T
- Type: Double Vacuum Heating Tube
- Application: Water Heater, Solar Thermal, Air Conditioning System
- Pressurized: Pressurized
- Glass Material: 3.3 High Borosilicate Glass
- Outer Tube Diameter: 58mm
- Wall Thickness: 1.6mm
- Net Weight: 2.4kg
- Warranty: 10 Years
- Transport Package: Export Standard Packing
- Origin: Dezhou, Shandong
- Condition: New
- Certification: ISO
- Pipe Material: Glass
- Structure: All-Glass Concentric Tube Geometry
- Length: 2100mm
- Inner Tube Diameter: 47mm
- Transmittance of Outer Tube: 0.93
- Usage: Solar Thermal Collector
- Trademark: Gaia Solar
- Specification: 58*2100mm
- HS Code: 8419901000
The evacuated tube is the key component to all the thermal heaters and system. It's similar to a conventional Dewar flask and consists of two borosilicate glass tubes, resistant to high chemical and thermal shock. 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 avoid heat loss in conduction and convection. The key element determines function of tube is the technology of the film coating, Gaia Solar tube is the best efficiency tube you can find in China, with the highest absorptance rate of near 97% with common rate of 94% and lowest emission rate near 3% with common rate of 5%.
|Method of Deposition||DC reactive sputtering|
|Variation along Tube Length||3%|
|Emittance||< 6% (100°(C)|
|Vacuum Gas Pressure||£ 5 x 10-3 Pa|
|Stagnation Temperature (typical)||³ 270 °(C|
|Recommended Working Temperature||£ 150 °(C|
|Heat Loss Coefficient of Collector Tube||£ 0.85W / (M2·°(C)|
1. Higher efficiency collector, much lower heat loss with vacuum insulation;
2. High pressure and super anti-freezing performance in cold weather condition;
3. Less heat loss for closed loop circulation;
4. No system drainage even though one or several tubes are broken;
5. No risk of tube breaking from thermal shock;
6. More convenient in system parts carring and installation;
7. Can load 6960 pcs in one 40HQ;
8.Cheaper than other thermal conductivity
Our service for you:
a) sample orders for check allowed, while necessary sample charges will return back with your bulk-order.
b) OEM & ODM orders are acceptable. Any style of Logo could be printed or designed as your request.
c) local or oversea projects could be operated together with you.
d) good quality + competitive price + reliable service are what we are providing with.
a) keep you reminded when producing your orders and delivery.
b) keep you reminded when new products or updated quotation.
c) 3 years guarantee. Any problems by quality would be settled until satisfied.
d) long term cooperation will be welcomed & appreciated.