Solar hot water system is based on the principle of black body absorption. The black surface of the collector absorbs the heat energy from the sun rays and transfer it to the water passing through 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.
| Absorber | Copper / Aluminum with 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 | Ulrta Sonic Welding |
| Collector Frames | Aluminum Powder Coated |
| Top Cover Glazing | Toughened Glass 4mm.thickness |
| Glass Beading/Gasket | Pure EPDM Rubber |
| Collector Insulation | Pluff Slabs for sides and 50 mm.thick Rock Wool Slabs |
| Flanges | Brass Forged & Machined Flanges |
| Inner Tank Material | Stainless Steel 304 / GI |
| Outer Tank Material | Aluminum Stucco |
| Tank Capacity | Customized to Customer Requirement |
| Inlet/Outlet Pipe | Stainless Steel |
| Tank Welding | Tig Welding / Mig Welding |
| Filler Material | Stainless Steel |
| Thermal Insulation | Rock Wool / PUF |
| Heat Retention | 72 Hours |
Focusun Energy Systems is a leading designer and manufacturer of Solar Thermal and Solar Photovoltaic Systems.