All Glass Solar Vacuum Tube&evacuated Tubes For Solar Collector Use

Technical Parameter: Models Ф58×1800 Weight 2kg±0.05kg Structure All glass coaxial double-layer tubes Outer tube diameter Ф58±0.5mm Inner tube diameter Ф47±0.5mm Outer Tube thickness 1.6±0.15mm Inner tube thickness 1.6±0.15mm Tubes length 1805±5mm no coating length ≦25mm Material of coating AlNO/SS-OX-AINYOZ /CU Absorptance  0.93~0.96 Emittance 0.03~0.06 Vacuum P≤5.2×10-4pa Transmittance of Outer Tube ≧0.92 Stagnation temperature (height) 260~300℃  Heat-loss coefficient  ≤0.5 w/ (m2·℃) Pressure-endure ability 1MPa 40HQ load 7100 Pcs The structure and Character of All-glass Vacuum Tube: Advantage of All-glass Vacuum Tube: 1. High Performance: Using ultra-limited coating and other cutting-edge technologies, the collection is more efficient. The absorption ratio is greater than 0.93, and the emission ratio is less than 0.06, which is much higher than the national standard. 2. Long Service Life: Design of high efficiency and energy saving by the experts electric vacuum exhaust machine with the computer online monitoring system, vacuum degree in 3 x 10-3 pa, is ten times bigger than the national standard, to ensure the vacuum tube service life of not less than 15 years.  3. High Strength: The vacuum tube wall thickness is the highest in the industry, and the finished weight and strength are high. In the steel ball test, the high impact of 2 times as high as the national standard is not damaged, and the weather can withstand hail. 4. Low detonation rate: The enterprise standard requires that the glass tube should be cut in grade C above grade C, so as to avoid the inner stress of the glass tube, and eliminate the hidden danger of the tube in the process of vacuum tube. Solar vacuum tube production line High Quality Core Parts Make Sure The High Quality Project For many years relies on strong scientific research and develop strength, continuously update the products, especially the vacuum heat collecting tube which is used as the core parts of solar water heater. Depending on the high quality and goo public praise, it formed in strategic cooperation with many renowned brands, market share reaches more than 6% in the industry in China. Products are sole to a dozen of countries. Good material All materials use section borosilicate glass, high intensity, good transparency, performance is excellent, it can bear 25mm hail shock, and thee service life is more than 15 years. Efficient heat collecting Classic “Shaile Tube” is fully updated, using the new gradual change-partiallly absorbing coating technology, solar absorption is up to 93%, heat emission ration is on 0.06, all close to the theoretical limits, performance is super good. Seal tightly The joint between vacuum heat collecting tube and connecting pipe uses “O” style seal ring, has long service life, tightly sealed, safe, reliable and other characteristics. Long time of insulation Our vacuum expert designed high efficient energy saving vacuum exhaustor and computer on-line monitoring system. The quality of vacuum is very good, can maximumly reduce the heat loss caused by heat conduction and heat convection. Bottom rounding and edging Cleaning Coating Gas exhausting and sealing Forming breathe mirror Package Vacuum tube details OUR PRINCIPLE: TO CREATE THE VALUE FOR YOU IS OUR BUSINESS