FEATURE:
(1) New intervene film technology : utilize copper aluminium and titanium three target film technology.
(2) Coating material add aluminium nitrogen-aluminium, copper ,stainless steel.
(3) Excellent heat preservation feature: Three target vacuum pipe utilize super fine copper mirror, hot water is available in -30 ℃ condition.
(4) The inner pipe cleaning and gas discharge has strict procedure
(5) Anti aging and attenuation : common vacuum pipe will be aged and attenuated in high temperature and shining condition (250℃). Three target vacuum pipe can bear 400℃, the life of the pipe is extended greatly..
(6) High heat efficiency:12% higher than common vacuum pipe.,
(7) vacuum layer is pure without impurity. Vacuum degree is high and heat loss is 65%.less than common vacuum pipe. Frost crack will never happen.
TECHNICAL SPECIFICATIONS
|
Types |
Three target vacuum pipe |
|
Glass-thermal expansion coefficient |
3.3×10-6/℃ |
|
Solar-selective-absorbing-coating-Technology |
utilize copper aluminum and titanium three target film technology. |
|
Absorbance Rate after coating(AM1.5) |
≥94.5% |
|
Absorbance Rate after Evacuating(AM1.5) |
≥93.5% |
|
Emission Rate after coating(80±5℃) |
∑≤6.0% |
|
Emission Rate after Evacuating(80±5℃) |
∑≤6.5% |
|
Solar Radiance Exposure |
≤3.0MJ/㎡ |
|
Average Heat Loss Coefficient |
≤0.70W/(㎡℃) |
|
Selective Coating Material |
Aluminium nitrogen-aluminium ,copper , stainless steel .etc. |
|
Impact Resistance |
Steel Ball Test:Steel ball with diameter of 30mm fall on the evacuated tube vertically from 450mm height,the evacuated tube is not damaged. |
|
Coating Lighter Area |
The coating color shall be even with lighter area shall be smaller than 50mm. |
|
Vocuum Degree |
≤3×10-3Pa |
|
Pressure |
0.6MPa |
|
Transparent |
≥0.89(AM1.5/SO9806-1:1994) |
