Solar Evacuated Tube Heat-Pipe Tube - SJL-VT

Item Name:

Solar Evacuated Tube Heat-Pipe Tube

Item No.:

SJL-VT

Description:

All glass evacuated tubes are the key companent of solar collectors. The evacuated tube is similar to a conventionak dewar flaskk and consists of two borosilicate glass tube, a glass with high chemical and thermal shock resistance. 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 virtually eliminated heat loss by conduction and convection.

Parameter:

1). Outer Diameter: 47mm / 58mm

2). Inner Diameter: 37mm / 47mm

3). Size of tube: 1500mm / 1800mm / 2100mm

4). Meterial: Borosilicate Glass 3.3

5). Thickness of tube: 1.6±0.1mm,2.0±0.1mm

6). Absorbing Coating: Tri-elements caoting (ALN/ALN-SS/CU) or AL-N-AL coating

7). Thermal Expansion: 3.3*10-6/k

8). Absorption of selective coating: =94%-96%(AM1.5)

9). Emission of selective coating: 4%-6%(80±50)

10). Cofficient of everage heat loss: 0.6-0.7W

11). Vacuum Rate: 5*103pa

12). Bearing Hailstaone Ability: Hailstone Diameter 25mm

13). Pressure-endure ability:1Mpa

Quality Guarantee:

1). We import the best solor water heater equipment from the Germany to ensure best quality.

2). We have the strictly raw material purchasing project and department to ensure the best quality of the Solar Vacuum Tube and Corelative accessories.

3). Special high quality insulated material to reduce the heat loss rate.

4). Marvellous quality copper coil for efficient heat transferring and long life span of solar water heater.

5). Exquisite workmanship to guarantee the decent apprearance.

6). We have vigious Quality Control System to ensure all products being sold is working well.

7). We are the ISO9001 approved enterprise, and we have gained the CE and CCC certification.

8). We provide 38 months warranty for our Solar Water Heater, and Vacuum tube 15 years warranty.

9). Long lifetime and no extra cost after installation.