Name

High efficiency Solar Heat Pipe Tubes for solar water heater

Structure

All-glass double-tube co-axial structure

Glass material

High borosilicate glass 3.3

External Pipe Diameter & Thickness

Ø=47±0.7mm&=1.6mm

Internal Pipe Diameter & Thickness

Ø=37±0.7mm &=1.6mm

Pipe Length

1800mm.

Coating layers

Cu/SS-ALN (H)/SS-ALN (L)/ALN

Coating method

Three target magnetron sputtering plation

Thickness

1.6mm/2.0mm/2.2mm

Specific absorption

as=0.93~0.96(AM1.5)

Emission ratio

Σh=0.04~0.06(80°C±5°C)

Vacuum tightness

P≤5.0×10-3Pa

Idle Sunning Property Parameters

Y= 260 ~ 300m². °C/KW

Solar Radiation for Obtaining a Preset Water Temperature

H≤3.7 MJ/ m²(Ø47), H=2.9~3.2 MJ/ m²;

H≤4.7 MJ/ m²(Ø58), H=3.7~4.2 MJ/ m².

Average Heat Loss Coefficient

ULT=0.4~0.6W/ (m². °C)

Pressure-Endure Ability

0.6Mpa

Hail resistance

Ø25mm/ Ø40mm

Lifetime

15 Years

Color

blue or purple golden