Specifications

solar heat pipe:
1,no water in the inner tube
2,transfer thermal by a special little liquid
3,first developed by our company

The introduction of solar heat pipe

 

1,All-glass double-vacuum solar heat pipe is made of high borosilicate glass 3.3 which are concentric,

the coating on the surface of the outer tube adopts advanced sputtering technology( SS-AlNx /Cu).

 

2,Compared to other common vacuum tubes,there is no water in the inner tube ,transferring thermal 

energy by a special little fluid,consequently,it is not easy to break in winter even if the temperature

below minus 50°c.

 

3,Compared to other flat plate which uses costly metals like copper & aluminium,obviously, it is more 

economical. All glass solar heat pipe is first developed by our company with independent intellectual 

property rights,and the patent number is ZL99.221421.1.This product has been sold since 2005,which

is universally acknowledged and gain a promising market in China.

  

                                                         

 

            

           

 

 

Raw material	High borosilicate glass 3.3
Model	47mm-1500mm,58mm-1800mm
Outer tube diameter	47mm±0.7mm, 58mm±0.7mm
Inner tube diameter	37mm±0.7mm, 47mm±0.7mm
Glass thickness	1.6mm
Coating material	SS-ALNx/Cu
Absorptance	0.90~0.95 (AM1.5)
Emittance	0.04-0.06(80°c±5°c)
Vacuum degree of inner tube	≤1.0×10­–³ (Pa)
Vacuum degree of vacuum jacket (between the inner and outer tube)	≤3.0×10­–³ (Pa)
Stagnation temperature	260~300°c
Average heat loss coefficient	0.4~0.6W/(m².°c)
Hail resistance	≤25mm
Length of condenser	125mm±5mm(Φ47mm-1500mm) 145mm±5mm(Φ58mm-1800mm)