Model EL is a flat plate collector encasing harp type absorber with very high efficiency level.
1. Frame of the collector: Aluminium profile powder coated for maximum protection in seaside areas.
2.Absorbing surface: Aluminum surface with blue titanium high selective treatment with high absorbance and low emission (α=95%, ε=4%), laser welded on the copper water frame.
3.Transparent cover: Security-Tempered prismatic solar glass for maximum protection against extreme weather conditions and temperature changes.
4.Header of water frame: For closed loop copper tubes in diameter Ø22mm and for open loop copper tubes in diameter ø28 with ¾” female fittings attached at each end. The headers are welded with the vertical tubes. Each water frame is tested at the pressure of 15 bars. Headers are punched with upper expansion for perfect fitting with vertical tubes and minimum pressure drop in the collector.
5.Vertical tubes: For closed loop copper tubes in diameter Ø8mm and for open loop copper tubes in diameter ø15.
For the EL1-EL2-EL3: 40mm thick layer of prepressed black mineral wool special for solar panels for minimum thermal loss. Rockwool insulation thermal conductivity: 0=0.035 W/m°K (EN 13162) and heat capacity 0.84 kJ/kgK.
For the EL4: 30mm layer of prepressed black mineral wool and a second layer of rigid PU 20mm, special for solar panels for minimum thermal loss. Rockwool insulation thermal conductivity: 0=0.035 W/m°K (EN 13162) and heat capacity 0.84 kJ/kgK.
7.Back cover: Aluzinc 0,4mm thick. Aluzinc stands for aluminum and zinc… fused in almost equal proportions, as a coating for the steel sheet that is coated with a silvery spangle composed of Aluminium (55%), Zinc (43,4%) and a touch of Silicon (1,6%). Great mechanical strength and 7 times more resisted to corrosion than common galvanized steel.
8.Sealing materials: For perfect waterproof finish and proper ventilation of collectors casing, all materials used (EPDM, polyurethane sealant) resist to extreme weather conditions and temperature changes.
The collector can be installed on a flat roof, tiled roof and in-roof.