How to distinguish the quality of vacuum tube in solar water heater
5, with the naked eye, the tube color is dark red, indicating that it is the bottom of the metal copper, the vacuum tube in cold conditions can also work, - 30 degrees as usual hot water.High quality vacuum tubes are generally used for more than 15 years, directly related to the life of solar water heaters
3, baking finish, bright and translucent, no black, black hair phenomenon.4, the market is currently the best of the three kinds of vacuum tubes: high temperature tube, high efficiency tube, cold tube. High temperature pipe coating than ordinary length (from the nozzle is about 1cm), the tube of high temperature resistance, anti damping performance is particularly strong, the film on the 400 DEG C high temperature air drying condition, not aging, not falling, not color. High efficiency tube layer is about 2.5cm from the nozzle, the tube is super absorption, less heat loss, fast heating, high thermal efficiency. The high temperature tube has the advantages of high efficiency, high heat efficiency and rapid heating, and the heat loss is less, and the hot water is produced at 30 DEG C. Consumers can choose different vacuum tubes according to different regions.
Identify the quality of the vacuum tube to see the appearance of the first, the appearance of high-quality vacuum tube:1, the surface is smooth, clean, no spots, no gas line, no scratch, no film phenomenon (this phenomenon will affect the collection efficiency and beauty).2, the film color to blue, black based, the overall color difference. But the black does not indicate that the quality of the vacuum tube is good, because some manufacturers to cover up the color, often made of pure black film.
