Double-Target solar vacuum tube

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Double-Target solar vacuum tube
Posting date : Apr 25, 2013
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27-
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Why choose us: A: 18 years experience in solar vacuum tube B: First quality, Promptly delivery, Customer first C: Competitive price & Free sample for test Guangpu ,established in 1995,is a leading professional manufacturer of solar thermal products ,especially in sollar vacuum tube. We are one of the drafters of the national standard of “All-glass heat pipe- evacuated solar collector tubes" for the National Standardization Committee. In 18-year development,we have possessed advanced technology and superior equipments for quality, schedule and cost control. We have annual production capacity over 10 million of various high-quality all-glass evacuated solar collector tubes.We have been continuously supplying solar products with best quality to well-known solar thermal companies both in China and other counties across the world. With 18 years experience and professional knowledge ,we are glad to help your team succeed through our cooperation. Double-target magnetron sputtering solar vacuum tube Tube glass Material High borosilicate 3.3 glass &=1.6mm Thermal expansion coefficient ≤3.3×10-6K Transmittance ≥0.90 Outer tube diameter & thickness Ø=47±0.7mm &=1.6mm Ø=58±0.7mm &=1.6mm Inner tube diameter & thickness Ø=37±0.7mm &=1.6mm Ø=47±0.7mm &=1.6mm Tube length 1500/1600/1800mm 1500/1600/1800/2000/2100mm Vacuum degree P≤2.0*10-3Pa Selective absorber Material SS-C/Cu Absorption ratio α=0.90~0.92(AM1.5) Emission ratio ε=0.04~0.06 (80°C±5°C) Maximum stagnation temperature Y=250m2 °C/KW Solar irradiation for stagnation H=2.9~3.2MJ/m2 H=3.7~4.2MJ/m2 Average heat loss coefficient ULT=0.4~0.6W/(m2°C) Mechanical shock resistance Withstand the vertical impact of a steel ball with 30mm in diameter free falling from a height of 450mm

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