Tri-target solar vacuum tube

Product Description

Advantage: High pressure withstanding ability High absorption efficiency Low heat loss Stable and ageing-resistant coating Anti-freezing Workability in tough weather *0years warranty ISO***1:***0 certified This kind of tube is made of two layer of borosilicate glass which is specially hard.Borosilicate glass 3.3 is an ideal material for solar evacuated glass tube because it has high transparency and can withstand high temperature as well as high pressure The absorber layer is coated with stainless steel, auminum and copper in an environment of entire ***** selective coating is more stable sith when stainless steel is added, and the absorptance is higher.Since copper is more effective than aluminum in reducing infrared conductiong, heat loss is greatly cut down when copper is coated as the infrared-reflection layer. The vacuum jacket which is of vacuum degree is a kind of superior ***** recuces heat loss and progects the water in the tube from freezing. Solar evacuated glass tube can produce hot water even tough water, That's why it is suitable to be used in areas and regions where is very cold or always cloudy. If you wanna get more information about our products, please visit our company website *****