Solar vacuum tube or titanium poly poly tube
What differences there are differences in the pre process, different material research, but the latter have been common, some basic than ordinary and not necessarily more in name than in reality, how many excellent vacuum tubes.From the titanium tube surface text sense, is an endothermic coating (selective absorption coating) should be added to the metal titanium or titanium oxide, titanium oxide has some metal properties, has the advantages of high temperature resistance, not easy to be oxidized in the vacuum tube in vacuum environment, long time continuous high temperature conditions, relatively stable that is not easy to decay.
But the ordinary vacuum tube is very cheap, titanium metal target is too expensive, few manufacturers will do, when I know only one of the larger manufacturers in the study of high temperature vacuum tube with titanium, titanium is widely used in the application of plate heat absorbing films, the reason is the tablet is non vacuum heat transfer temperature under the condition of adding titanium metal and its oxide film is more stable.You will find, due to price relationship, common low temperature vacuum tubes as the hot water project, I think there is no need to choose titanium vacuum tube is very expensive (and do not know is not just a gimmick).
Solar vacuum tube has been 30 years of history in china. The main function is to absorb solar energy into thermal energy, if you want to understand the corresponding national standards, 17049-2005As the main component of low temperature hot water project and widely used. In the development process, the light and low temperature hot water industry, the size of enterprises are developing their own products, hoping to achieve differentiation. So the birth of a number of new products, such as the name of the purple tube, three high tube, high efficiency tube, three target tube, super cold tube and a variety of shaped tube, titanium tube is one of them.
