Non-Pressure Solar Water Heater

HEL 3-layered tri-element vacuum tubes consists of thick glass outer tube and a thinner inner tube which is covered with a special coating that absorbs solar energy quickly and prevents heat loss. The inner tube is coated with a selective coating with 12 layers of spattering deposition technology that absorbs solar energy well and has better heating efficiency.

Cylindrical tubes ensures auto sun tracking that the angle of sunlight is always perpendicular to the absorbing surface of the tubes which makes sure heat from sun is well absorbed even in low sunlight. This technology is superior to other prevalent systems in performance, reliability & ease of installation.

The tubes are made of a material which is strong, resistant to high temperatures and has a high transmittance for solar irradiation.The incident solar radiation falling on the tube passes through the outer transparent tube and strikes the outer of inner tube. It absorbs heat energy and then passes to the cold water flowing in the tube. An evacuated tube technology based solar water heating system is most energy efficient and cost effective that are best suitable for home use.