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Solar Water Heaters Evacuated Tub Collector
Evacuated tubes are the absorber of the solar water heater.They absorb solar energy converting it in to heat for use in water heating. Evacuated tubes have already been used for years in germany,canada,china,and uk.There are several types of evacuated tubes in use in the solar industry. We use the "twin-class tube" technology. This type of tube is chosen for its reliability and better performance.
Evacuated Tub Basic Specification
| Length (nominal) | 1500/1800 mm |
| Outer Tube Diameter | 47/58 mm |
| Inner Tube Diameter | 37/47 mm |
| Glass Thickness | 1.6 mm |
| Material | Borosilicate Glass 3.3 |
| Absorptive Coating | Graded CU-N/CU |
| Absorptance | >92% (AM1.5) |
| Emittance | <8% (80°C) |
| Vacuum | P<5x1-3 Pa |
| Stagnation Temperature | >200°C |
| Heat Loss Maximum | <0.8/(m2°C) |
| Strength | 0.8MPa |
Insulated Storage Tank
| Inner Tank Material | Stainless Steel/Copper |
| Outer Tank material | Coated Sheet |
| Tank Capacity | 100 / 150 / 200 / 250 / 300/50 |
| Inlet/Outlet Pipe | Stainless Steel / Brass |
| Tank Welding | Tig Welding / Brazin |
| Filler Material | Stainless Steel / Copper |
| Thermal Insulation | Rock Wool / PUF |
| Heat Retention | 72 hours |
Solar Water Heaters Flat Plate Collector
Solar hot water system is based on the principal of black body absorption.The black surface of the collector absorbs the heat energy from the sunrays and transfer it to the copper tubes.Hot water being lighter in density,raised to the insulated storage tank and equal amount of cold water replaces this hot water from the copper tubes.
Flat Plate Collector Specification
| Absorber | Copper Black Chrome selective coating |
| Fin Type | Deep Serrated Fin to have increased surface area 10-15% |
| Copper Quality | 99.99% 0.02pure |
| Collector Area | 2.0 Sq. Mts |
| Header/Raiser Tube | Copper 25/12.5 mm.dia |
| Raiser to Fin joining | Ultrasonic Welding |
| Collector Frames | Aluminum Powder Coated |
| Top Cover Glazing | Toughened Glass 4mm.thickness Glass |
| Glass Beading/Gasket | Pure EPDM Rubber |
| Collector Insulation | Pluff Slabs for sides and 50 mm.thick Rock Wool Slabs |
| Flanges | Brass Forged & Machined Flanges |
Insulated Storage Tank
| Inner Tank Material | Stainless Steel/Copper |
| Outer Tank material | Coated Sheet |
| Tank Capacity | 100 / 150 / 200 / 250 / 300/50 |
| Inlet/Outlet Pipe | Stainless Steel / Brass |
| Tank Welding | Tig Welding / Brazin |
| Filler Material | Stainless Steel / Copper |
| Thermal Insulation | Rock Wool / PUF |
| Heat Retention | 72 hours |