heat pipe solar collector

heat pipe solar collector
heat pipe collector
Place of origin: zhejiang China
Brand name: sijile
Item Name:
heat pipeheat pipe solar collector

Item No.:
SJL-VT



Specification:
1. outer diameter/inner diameter: 47/37mm, 58/47mm
2. lenghth of tube: 1500mm, 1800mm, 2100mm
3. material: borosilicate glass 3.3, thickness of tube: 1.6±0.1mm, 2.0±0.1mm
4. selective absorbing coating: tri-elements coating(ALN/ALN-SS/CU) or AL-N-AL coating
5. thermal expansion: 3.3*10-6/K
6. absorption of selective coating: =90%-93%(AM1.5)
7. emission of selective coating: 5%-7.5%(80°C±5°C)
8. Cofficient of everage heat loss: 0.6-0.7W/