Specifications “AVIN” Solar Flat Plate Collector

A. COLLECTOR BOX – FRP (Fiber Glass Reinforced Body).

Details of Material Thickness and specifications: The housing is asingle piece jointless unit moulded   from FRP having 2-3mm thickness. FRP body collector housing is all weatherproof, light weight, very strong, extremely durable, self insulating, bad conductor of heat and so increases the efficiency of collector up to 20% by not allowing the energy gained to escape out. It is colorful, streamlined and elegant in appearance and it does not require periodic painting or maintenance.

Tested by CIPET(Central Institute of Plastics Engineering & Technology), FRP body
of our collector shows a  tensile strength  in excess of 800,  plus extremely good resistance to acids and alkalies, making it the ideal “body”.  For good measure we also had a ten year old FRP body of our collector tested  at CIPETand  the tests showed no deterioration in its physical properties proving beyond any doubt that FRP(fibre reinforced plastic) is yet the best material for the outer shell of the collector.

Specifications of Flat Plate Collector

Type of Absorber   

Cu-cu Black/ selective coated

Size of Collector   

1000w 2030 length 100 depth ( mm)

Cover Plate  

4 mm thick toughened glass

Net Absorber area   

1.88 sq. meter

Net Collector area   

Above 2 sq. meters

Absorber Coating   


Number of Risers   

9 nos. Each extra riser increases the efficiency of collector by 9% to 12%.

Fin width (Pitch)   


Riser Tube  

9 nos.12.5mm diameter * 0.55mm (24 SWG) Cu tube 9 nos.




25mm diameter * 0.71mm (22 SWG) Cu tube 2 nos.

Method of bonding of riser and header  


Water/ Liquid holding Capacity of collector  

2.5 liter / collector

Collector Box Insulation   

Expanded Polyurethane foam(PUF) + air gap + fibreglass body collector =
superior insulation properties. Alternatively glass wool insulation is

End Connection  

Alloy GM / Multimetal coupling internally threaded to accommodate 25 mm GI pipe
for easy assembly and easy maintenance

Type of Collector   

Collector absorber with built in “AVIN” AUTO DESCALING SYSTEM to prevent/and/or delay formation of scale in the risers and header tubes

Collector weight without water / liquid  

38.5 kg approximately