• High-Efficiency Solar Evacuated Tubes
  • High-Efficiency Solar Evacuated Tubes
  • High-Efficiency Solar Evacuated Tubes
  • High-Efficiency Solar Evacuated Tubes
  • High-Efficiency Solar Evacuated Tubes
  • High-Efficiency Solar Evacuated Tubes

High-Efficiency Solar Evacuated Tubes

After-sales Service: Provided
Warranty: 1 Years
Condition: New
Type: Common Vacuum Tube
Certification: ISO, CE
Application: Water Heater, Solar Thermal
Customization:
Diamond Member Since 2021

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Rating: 4.5/5
Manufacturer/Factory & Trading Company
  • Overview
  • Product Description
  • Product Process
  • Product Parameters
  • Remarks
  • Company Profile
  • Strategic Partnership
  • Packaging & Shipping
  • Certifications
Overview

Basic Info.

Pipe Material
Glass
Pressurized
Non-Pressure
Transport Package
Cartons
Specification
58*1800mm
Trademark
Tianxu or OEM
Origin
China
HS Code
8419
Production Capacity
500000 Pieces/Month

Product Description

Product Description

SOLAR WATER HEATER ACCESSORY: SOLAR VACUUM TUBE 
Solar vacuum tube is the core parts of solar water heater. It absorbs solar energy converting it into heat for hot water heating. Solar vacuum tubes have already been used more than 20 years in China. 

Each solar evacuated tube consists of two glass tubes made from extremely strong borosilicate glass. The outer tube is transparent allowing light rays to pass through with minimal reflection. The inner tube is coated with a special selective coating which features excellent solar radiation absorption and minimal reflection properties. The top of the two tubes are fused together and the air contained in the space between the two layers of glass is pumped out while exposing the tube to high temperatures. This "evacuation" of the gasses forms a vacuum, which is an important factor in the performance of the evacuated tubes.

 

Product Process


High-Efficiency Solar Evacuated Tubes

Product Parameters

Tube Structure All-glass double deck co-axial structure
Glass material  Borosilicate 3.3 glass
Outer tube diameter and glass thickness Φ58+/-0.7mm; glass thickness 1.6+/-0.15mm
Inner tube diameter and glass thickness  Φ47+/-0.7mm; glass thickness 1.6+/-0.15mm
Tube Length 1800mm
Absorber coating  Coating Material  Cu/SS-AIN(H)/SS-AIN(L)
Sediment method Three targets magnetron sputtering plating
Absorptivity 0.93~0.96
Emittance ≤6.0%(80ºC+/-5ºC)
Vacuum degree P ≤5.0X10-3(Pa)
Transmittance of glass tube  T ≥0.89(AM1.5 ISO9806-1:1994
Stagnation parameter Y: 240~250 m2ºC/KW
Average heat loss  ULT≤0.6 W/(m2*ºC)
Hail resistance Φ25mm
Pressure endure 0.6 MPA

Remarks

Cover glass  tube Protect the whole tube.
The space  between  the cover glass tube and the inner glass tube is mechanically evacuated to create a vacuum environment
Inner glass tube Filled with heat transfer fluid (generally water) and directly plugged to the water storage tank
Selective  absorbing  coating Absorbs solar  radiation and transfers  to the fluid in the inner tube.
Retainer Keeps the inner tube fixed.
Getter Absorbs the residual air in the space between the cover glass tube and inner glass tube.

 

Company Profile

High-Efficiency Solar Evacuated Tubes
High-Efficiency Solar Evacuated Tubes
High-Efficiency Solar Evacuated Tubes

Since its establishment in 2002, Shandong Longguang Tianxu Solar Energy Co., Ltd (hereinafter referred to as "Tianxu") has always engaged itself in the R&D, production, sales and service of high borosilicate glass tubes and new energy products including solar water heaters, solar vacuum tubes, solar heat collecting project, air source heat pump, photovoltaic products, etc. 

Tianxu has 10 sets of electric furnaces, 70 sets of solar vacuum tube production line and 3 sets of solar water heater production lines. The annual output has reached one million tons of high borosilicate glass, over 16 million solar vacuum tubes makes Tianxu the largest manufacturing base of high borosilicate glass tubes and solar vacuum tubes. 

In 2015, Tianxu established a joint venture company with Beijing Tsinghua Solar Co., Ltd- the solar vacuum tube technology initiator in the world. The newly established company has the world's most advanced solar vacuum tube production lines.
 

Strategic Partnership

High-Efficiency Solar Evacuated Tubes

Packaging & Shipping

High-Efficiency Solar Evacuated Tubes
Our products have been widely exported to many countries, like Vietnam, India, Mexico, Syria, Korea, Dubai, Etc. we are serving the top brands in solar water heaters for each country. Our yearly export quantity is 600 containers. 

Certifications

 

High-Efficiency Solar Evacuated Tubes
High-Efficiency Solar Evacuated Tubes
High-Efficiency Solar Evacuated Tubes
 
High-Efficiency Solar Evacuated Tubes
High-Efficiency Solar Evacuated Tubes
High-Efficiency Solar Evacuated Tubes
 

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