Type

Tri-element 

Normal (Blue)

Length

1500mm/1800mm

1500mm/1800mm

Outer Tube Diameter

47mm/58mm

47mm/58mm

Internal Tube Dia

37mm

37mm

Weight

1.4kg/2.0kg

1.4kg/2.0kg

Glass Thickness

1.6mm/2mm

1.6mm/2mm

Material

Borosilicate glass 3.3

Borosilicate glass 3.3

Absorptive Coating

Grade ALN/AIN-SS/CU

Grade ALN/AL

Vacuum degree

P≤5.0*10-3 Pa

P≤5.0*10-3 Pa

Thermal Expension

3.3*10-6/ºC

3.3*10-6/ºC

Insulation

>200ºC

>200ºC

Absorptance

>95%

>93%

Emittance

4-6%

5-7.5%

Heat loss

0.4-0.6W/(m2 ºC)

0.6-0.8W/(m2 ºC)

Maximum strength

0.8Mpa

0.8Mpa

Resist cold

-35ºC

-35ºC

Resist hailstone

Φ25mm

Φ25mm

Resist wind

30m/s

30m/s

Start-up temperature

≤25ºC

≤25ºC