What is the difference between solar water heater collector
You see the general vacuum tube, just started to use 1 years, no major changes, not too obvious. In the 3 year, the film due to backward technology (gradient film technology), low vacuum and gas film coating is not solid, not high temperature, film off, Ukraine, plus the factory when the vacuum is low (10-2 PA), vacuum tube leakage, advance into the aging period, then the vacuum tube collector is not only poor, fast heat dissipation, solar hot water, with a summer away, no hot water in spring and autumn and winter. The vacuum tube is used for 5 years, the performance of the vacuum tube is rapidly attenuated, the film layer is completely off, the tube is white, the heat is not collected, the pipe is changed into a water cooler, and no hot water is produced.
Reasons for the attenuation of heat collection performance of ordinary vacuum tubes:1, coating: coating technology behind the traditional coating technology adopted in 70s, the film is not solid, temperature, high temperature, after a period of time, the film off, Ukraine, serious white, at the same time because of its high content of metal ions, emission ratio at the same time, heat loss.2, cleaning, manual cleaning, vacuum tube is easy to residual fingerprints and impurities, the fat will gasification of impurities, in the condition of high temperature in the film off fingerprints, and lead to a reduction in vacuum, heat dissipation, thermos bottle container for a long time like bad, just a water container.3, exhaust: low vacuum exhaust Taiwan with small power horizontal, exhaust equipment temperature is only 200 degrees Celsius, vacuum time is only 20 to 30 minutes, the gas row not clean, resulting in low vacuum, only 10-2 PA, like the same heat collecting thermos bottle container, at the same time, poor efficiency, fast heat dissipation, fast attenuation of whole body.
You refer to the vacuum tube heat collector terminology.The vacuum tube is the core component of solar energy, like a car "engine", the "heart", if the vacuum tube collector performance below, not 3, 5 years to buy solar energy will become "water cooler".
