solar water heater

1.For 15 years warranty!
2. . fast thermal collecting efficiency
3. it worksvery well under the cold weather.
Three kinds:
common vacuum tube
three-target ( blue and black-golden)
three-target purple-golden( purple and golden)
Solar evacuated tube technology:
Dimension
Φ47
Φ58
Material of Tube
3.3 High Borosilicate
3.3 High Borosilicate
Glass Expansion Ratio
3.3±0.1×10
-6
K
-1
3.3±0.1×10
-6
K
-1
Outer Diameter of Tube
Φ47±0.7
Φ58±0.7
Inner Diameter of Tube
Φ37±0.7
Φ48±0.7
Thickness of Glass
1.6±0.15
1.6±0.15
Transmittance
≥0.89
≥0.89
Selective Coating
SS-CU-AL-N/AL
SS-CU-AL-N/AL
Absorptivity
≥0.86(AM1.5)
≥0.86(AM1.5)
Emissivity
≤0.080(80±5)
≤0.080(80±5)
Vacuum Degree
≤5.0×10
-3
Pa
≤5.0×10
-3
Pa
Collecting Performance Parameter under Sunshine
≥190m
2
/kw
≥190m
2
/kw
Hailstone Resistance
25mm
25mm

Starts up fast and collects solar energy fully.
Unique super pure copper surface. allowing lower reflection and minimal heat loss.
High level vacuum ensure operation under cold weather.
Long time warranty to 15 years.
Looking forward to having business with you in the near future!