Roop Arinna Fabricators Pvt. Ltd.

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.

Specifications

LENGHTH 1800 MM
OUTER TUBE DIAMETER 58MM
INNER TUBE DIAMETER 48 MM
GLASS THICKNESS 1.6 MM
THERMAL EXPANSION 3.3X10−6 K
MATERIL BOROSILICATE GLASS 3.3
ABSORPTIVE COATING GRADED SS—C/CU
METHOD OF DEPOSITION DC REACTIVE
SPUTTERINGABSORPTION >92%(AM 1.5)
EMMITTANCE <8%W/(800C)
VACCUM P<5X10-3Pa
TEMPERATURE >3000C
HEAT LOSS <0.8W/(M20C)
PRESSURE –ENDURE ABILITY 1MPa
LIFETIME (20 Years)