Flat Plate Collector (FPC)

Technical Specifications of Collector
Technical Specifications for Tank :
Inner Tank "URATOM"
Overall size 2030 mm x 1030 mm x 95 mm.
No. of fins per collector 9
Absorber area Appro. 2.06 sq. M
Absorber coating NALSUN Solar selective coating on copper (black chrome on copper with or without nickel undercodat) 
Absorptivity 0.92 - 0.96
Emissivity 0.10 - 0.15
Temperature tolerance of coating More than 200 oC
Absorber sheet (Copper) 0.12 mm thick x 1900mm L x 155mm W
Riser (Copper tube) O. D. 12.7mm x 0.5 mm thick x 1922 mm L
Bonding between riser Tube and absorber Ultrasonic welding
Bonding between riser Tube and header Copper brazing
Hydraulic Test pressure 5 kg/ sq.cm.
Rated pressure 2.5 Kg/ sq. cm.
End connections Brass flared Flanges of threaded 1" BSP
Collector box Specially Extruded Aluminum sections
Box-back sheet joint Pop riveted
Box-corner joints Screwed
Back sheet Aluminum sheet 0.6 / 0.7 mm thick
Reflector Aluminum foil 0.02 / 0.05 mm thick
Glazing Toughened & tempered glass 4 mm thick-free From bubbles and scratches
Transmittance > 0.82
Sealing Silicone sealant
Back Insulation Resin bonded Rockwool 50 mm thick. R=1.67 M2 oC / W, K=0.052W / M2. k
Side insulation Resin bonded Rockwool 25 mm thick
Grommets & gaskets EPDM rubber
Thermal performance FRUL ≤ 6 W / M2 oC, FR (T&) ≥ 0.65
Technical Specifications for Tank
Technical Specifications for Tank :
Capacity Equal to system capacity
Material SS 304 Non magnetic stainless steel or epoxy coated G.I.
Welding TIG welding (Argon inert gas welding) for SS304
Thickness Suitable for tank capacity
Insulation Glasswool sheets 100 mm thick
Cladding PP Powder-coated G.I. sheets / Aluminum Cladding
Back up Electrical coil of 2 KW (Optional)
Pressure rating 0.5 Kg/cm.2 for normal systems; 3.5 - 5 kg/cm.2 for pressurized systems
Monthly Savings Chart
Monthly Savings Chart :
Traditional Energy

150 liter

3-4 Members

300 liter

9-10 Members

500 liter

15-16 Members

2 kw electric heater 625/-* 1250/-* 2080/-*
Natural Gas 523/-* 1046/-* 1744/-*

* Price of electric unit Rs. 4.5 + tax caculation is shown

* price of gas Rs. 40/1kg.

* In calculation, cold water temperature kept at 25°C & Heated temperature at 50°C

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