Solar Thermal Collectors Evacuated Tube
|FOB Unit Price:||US $2.1 US $1.82|
|Purchase Qty. (Pieces)||FOB Unit Price|
|Payment Terms:||L/C, T/T|
- Model NO.: 47*1800mm
- Type: Double Vacuum Heating Tube
- Application: Water Heater, Solar Thermal, Air Conditioning System
- Pressurized: Pressurized
- Glass Material: High Borosilicate Glass
- Outer Tube Diameter: 47mm
- Wall Thickness: 1.6mm
- Trademark: Gaia Solar
- Specification: 47*1800-3T
- HS Code: 8419901000
- Condition: New
- Certification: ISO
- Pipe Material: Glass
- Structure: All-Glass Concentric Tube Geometry
- Length: 1800mm
- Inner Tube Diameter: 37mm
- Transmittance of Outer Tube: 0.93
- Transport Package: Export Standard Packing
- Origin: Dezhou, Shandong
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 pieces in one 40 HQ;
8.Cheaper than other thermal conductivity.
A: Yes, of courses we can supply the sample for you!
Q2: Can I add my logo on the water tank?
A: Yes, OEM and ODM are available for us.But you should send us LOGO image.
Q3: How can i get the after-service?
A: We will send you the spare parts by free if the problems caused by us. If it is the men-made problems, we also send the spare parts, but you should pay.
Q4: Do you have inspection before delivery?
A: 100% self-inspection before packing.
Q5: Can I have a visit to your factory before the order?
A: Sure, welcome to visit our factory.
Dezhou Gaia Solar Energy Co.,Ltd
Room 712, Baitiane Plaza, No.7 of HuBinnan Road, Dezhou City, Shandong Province
Mobile and Chat: 0086-13953485199