vacuum heat collector tube higher absorptance and lower emittance, high heat and cold resistance excellent quality and reaso

All-glass vacuum solar collector tube,vacuum  heat collector tube

Certification:ISO9001:2000

(1)Structure:all-glass double-tube coaxial structure

(2)Glass material :high borosilicate glass 3.3

(3)Thickess:1.6mm/2.0mm

(4)External pipe diameter : 47mm/58mm/70mm

(5)Internal pipe diameter: 37mm/47mm/58mm

(6)length:1500mm/1600mm/1700mm/1800mm/1900mm/2000mm/2100mm

(7)The coating's absorption :0.91-0.930(AM1.5)

(8)average heat loss coefficient:0.83W(M2.C)

(9)high heat and cold resistance

(10)Interference coating technology

(11)long life

vacuum heat collector tube