Choosing Solar Evacuated Tubes for Solar Water Heating Systems
What Do You Mean by Solar Evacuated Tubes? Solar evacuated tubes are viable alternatives to solar water heating and pool heating systems . They are similar to perfectly-build thermos. The air between both glass layers gets sucked out during the manufacturing process to create vacuum. Hence, there is no air present inside the vacuum layer; so there is no means of transferring heat from a layer to the next. It allows the vacuum tube to absorb solar energy by up to 97% while losing around 3%. This makes vacuum tubes highly efficient for solar pool heating and water heating systems. Typically, solar vacuum tubes comprise of four specially coated layers of copper, aluminum and stainless steel on the inner tube. These layers absorb solar energy and transfer to the center of the vacuum tube through a heat fin. How Do Solar Vacuum Tubes Work? A solar evacuated tube works by transferring heat energy from the s...