The basic pipe is a coaxial arrangement with a glass outer tube and a closed copper inner tube that holds a nontoxic fluid. The inner tube has low pressure in it so that the small amount of fluid vaporizes at a lower than normal temperature.

Solar insolation striking the assembly causes the fluid to evaporate easily, and the hot gas moves to the top of the inner copper tube, where the heat is transferred to a heat transfer fluid and eventually to the potable water.

[url=https://www.unipu.com/]Zhejiang Uniepu New Energy Co ltd[/url] is an integrated enterprise professional working on the renewable energy and new material products' development production and sales since 2009. Our products including solar hot water, solar water heater, solar thermal, solar photovoltaic system for house and solar accessories.

We have been sold worldwide, especially to India, Poland, where we have over 10 years experience , and in Mexico, Chile, Brazil, where over 5 years experience, also we have achieved greater market share in European and South America. We welcome to receive all the inquires.