Solar Water Heater Accessories 58x1800 Vacuum Tube for Solar Water Heater
Primary Competitive Advantage
1. Manufacturer
2.Small order and OEM order accepted.
3. CE, CCC, ISO9001, ISO14001
4. High quality products & Materials
5.Competitive Price. T/T & L/C payment.
6. Prompt Delivery.
7.Superior and stable quality, Good after-sale service.
Description
This type of selective coating (SS-C/Cu) can withstand very high temperature.
This is important because the tube is exposed in high temperature to evacuate the gas in the jacket between the inner tube and the outer tube.
The solar energy absorption ability should be above 92%.
| Specification |
| Structure | All glass double concentric tubes |
| Material | Borosilicate glass 3.3 |
| Outer tube diameter | Φ47±0.7.mm &=1.6mm Φ58±0.7.mm &=1.6mm |
| Length | 47mm-1500mm/1600mm/1800 |
| 58mm-1500mm/1600mm/1800mm/2000mm/2100mm |
| coating | CU/SS-ALN/ALN |
| Absorption rate after evacuating | α= 0.93–0.96(AM1.5) |
| Emission rate after evacuating | ε= 0.04–0.06(80°C±5°C) (AM1.5) |
| Vacuum degree | P≤5.0×10¯³Pa |
| Average heat loss conficient | ULT = 0.4-0.6w(m².°c) |
| Max stagnation temperature | 270°C-310°C |
| Service life | 15 years |
| Pressure | 0.6MPa |
| Impact Resistance | Φ≤25mm |
All-glass evacuated solar collector tubes technical data
| Technical Data | All-glass evacuated solar collector tubes |
| Material | Borosilicate Glass 3.3 |
| Stone | Stones (Ø≤1mm) ≤1 piece in area of 10mm×10mm; Stones(1.0mm≤Ø≤1.5mm) ≤ 2 pieces in the whole tube. |
| Knots | Knots(Ø≤1mm) ≤2 pieces in area of 10mm×10mm; Knots(Ø≤2.5mm) ≤ 5 pieces in the whole tube |
| Absorptance of Selective Coating | ≥0.92 (AM1.5) |
| Emission of Selective Coating | ≤0.06 (80°C±5°C) |
Solar heat pipe Technical Specifications
| Item | Measured value |
| Heat conduction coefficient | >99% |
| Axial heat transition auantity | 0.93-2.49kw/cm² |
| Heat conduction speed | >200mm/s |
| Axial temperature difference | 1-2centi-degree/m |
| Starting temperature | 20centi-degree |
| Starting speed | 2min |
| Working temperature range | 30centi-degree~300centi-degree |
| Resistance to high temperature | No deformation in 48hours under 250C high temp condition |
| Resistance to low temperature | -35C |
| Life | 15 years |
Structure of Solar Collector Tube
1. inside tubes
2. selective coating,
3. vacuum jacket,
4. outside tubes,
5. supporter
6. getter
7. mirror
Loading Quantity
| Specification | Quantity each carton | 20ft | 40HC |
| Ø 47*1500mm | 15/20/24pcs | 5040pcs | 12000pcs |
| Ø 47*1800mm | 15/20/24pcs | 4600pcs | 10200pcs |
| Ø 58*1800mm | 10/15pcs | 2600pcs | 6420pcs |
Our Advantages
The reason using our solar vacuum tube is:
Over 10 years production experiences
Production chain from glass tube to solar vacuum tube which could ensure the stability of tubes.
8 years export experiences
Global network
Fast delivery (production time: 5 containers within 7 days; 10 containers within 10 days.)
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)
