Solar Water Heater Accessories Solar Vacuum Glass Tube for Solar Water Heater and Solar Collector
OEM and ODM.
LOGO on the product and packages.
Description:
Just like an automobile engine,the computer CPU,evacuated tube is core of the solar water heater.
It's similar to a conventional dewar flask and consists of two borosilicate glass tubes,reisting 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 convertion.
The key element determing that the performance of tube is the technology of the film coating.
It’s the best efficient tube you can find in China,with the highest absorption rate of near 93% comparing with common rate of 90% and lowest emission rate about 4% comparing with common rate 7%.
Key Specifications/Special Features:
Structure: all glass concentric coaxial
Glass material: borosilicate 3.3
Outer tube diameter and thickness:
Ø47 ±0.7 and 1.6mm
Ø58 ±0.7 and 1.6mm
Ø70 ±0.7 and 2.0mm
Internal tube diameter and thickness:Tube length: 800, 1200, 1500, 1800, 1900, 2000 or 2100mm
Ø37 ±0.7 and 1.6mm
Ø47 ±0.7 and 1.6mm
Ø58 ±0.7 and 1.6mm
Absorptive coating property:
Structure: Al-N/Al-Cu
Sediment method: 3 larger magnetron sputtering plating
Absorption: 0.93 to 0.96 (AM1.5)
Emittance ratio: 0.04 to 0.06(800±50c)
Vacuum tightness: P≤5.0 x 10.3Pa
Stagnation parameter: 260 to 300m2
Solar irradiation for obtaining a preset water temperature:Average heat loss co-efficient: ULT=0.4 to 0.6W
H≤4.7MJ/m2 (Ø58) H=3.7 to 4.2MJ/m2
H≤3.7MJ/m2 (Ø47) H=2.9 to 3.2MJ/m2
Lifetime: 15 years
Hail resistance: Ø25mm
Technical Data Sheet of Evacuated Collector Tube
| Model | PT-1800 |
| Structure | All-glass double-dual co-axial vacuum tube |
| Glass Material | Borosilicate glass3.3 |
| Length | Length |
| Net Weight | 2.025Kg |
| Outer Tube Diameter/thickness | 58 ±0.7 mm/2mm |
| Inner Tube Diameter/thickness | 48 ±0.7 mm/1.8mm |
| Hail resistance | Φ25 mm |
| Transmittance of Outer Tube | 0.90 (AM1.5) |
| Absorptive Coating | Structure | SS-AlNx/Cu solar selective absorber coating |
| Sediment | DC reactive sputtering |
| Absorption ratio | a=0.90-0.95 (AM1.5) |
| Reflection ratio | ε=0.04-0.06 (80OC) |
| Vacuum degree | P≤ 5×10-4pa |
| Stagnation parameter using air as medium | 250m2 oC/ kw |
| Solar radiance exposure for obtaining a preset water temperature | H≤ 2.8 MJ/m2 |
| Average heat waste coefficient | ULT≤0.6 W/(m2 oC) |
| Service life | 15 years |
Primary Competitive Advantages:
Country of Origin
Experienced Staff
Green Product
Guarantee/Warranty
International Approvals
Product Performance
Prompt Delivery
Quality Approvals
Reputation
Service
Main Export Markets:
Eastern Europe
North America
Mid East/Africa
Central/South America
Asia
Western Europe
Australasia
Trade Items:
Terms of payment: T/T or L/C
Terms of trade: CFR, CIF, FOB
Delivery time: Within 15 Days
Packing Sizes:
1880*340*170mm (58*1800mm,10pcs/carton)
Packing material: in export carton (FCL); in export carton plus wooden case outside (LCL)
Loading Quantity by container:
20’GP: 220CTN (2200PCS)
40’GP: 440CTN(4400PCS)
40’HQ: 580CTN(5800PCS)
