Evacuated Tube Collectors (ETC) based Solar Water Heaters (SWH)
Arinna Evacuated Tube Collector is made of double layer borosilicate glass tubes evacuated for providing insulation. The outer wall of the inner tube is coated with Selective absorbing material. This helps absorption of solar radiation and transfers the heat to the water which flows through the inner tube.
Solar water heating is now a mature technology. Wide spread utilization of solar water heater scan reduce a significant portion of the conventional energy being used for heating water in homes, factories and other commercial and institutional establishments. Internationally the market for solar water heaters has expanded significantly during the last decade.