Material of inner tank
0.31mm-0.5mm thickness,food grade SUS304-2B or SUS316L
Material of outer tank
0.4mm thickness,Stainless steel 202 or SUS304
Insulating layer
50-55mm thickness,45kg/m3 high density polyurethane foamed
Solar collector tube
3.3 Borosilicate glass with Cu-SS-ALN/ANL. coating
Thickness of glass tube
1.6mm/1.8mm/2.0mm/2.2mm
Vacuum tube tightness
P≤0.005 Pa
Average heat loss coefficient
ULT=0.6~0.7W/(m2.C)
Bracket(frame)
Stainless steel,Galvanized steel,Aluminum alloy,Thickness optional