FK 7000-Flat plate collector

1. TECHNICAL DESCRIPTION

The collectors of this series are drysealed without silicone. The solar glass cover is sealed by means of an uncemented rubber frame.
The full-face absorber is bedded in an aluminium trough on a layer of rockwool with a thickness of 50 mm. A special modular mounting system was developed for the series which makes it possible to realise standalone, roof-integrated and roofmounted solutions with equal ease.

FK 7000-Flat plate collector

2. TECHNICAL DESCRIPTION OF THE COMPONENTS

2.1 Housing

Aluminium trough with protection foil

Material: Aluminium - AIMg3
Color: aluminium
Thickness: 0,8 mm

2.2 Absorber

Full-face absorber; headers and manifolds are hard soldered and ultrasonically welded to the absorber sheet.

Header tubes: ø18x1,0 mm; 22x0,8 mm
Manifolds: ø  8x0,5 mm
Copper sheet: High selective vacuum coated 0,2 mm
Connections Flat-sealing DM 22-1"; DM 18 3/4 " screw couplings

2.3 Transparent cover

4 mm low-iron solar glass, tempered

Light transmittance of glass: > 90,8% +/- 2%
Pane dimensions LxW [mm]:

2318 x 1044

FK 7300)

2040 x 1200

(FK7250)

2000 x 1000

(FK7200)
Sealing of glass: Continuously vulcanized (UV-proofed EPDM-rubber frame – shore 70)

2.4 Insulation

40/50 mm mineral wool.

Heat conductivity: 0,045 W/mK
Gross density: 50 - 80 kg/m³

2.5 Other

Fixing of outlets: Fixings of manifolds are made from fibre reinforced plastic and form a thermic separation to the trough.

Type plate: UV-proof and weatherresistant silverpolyester-sticker.

Packing: According to our customer's demands we wrap single collectors or deliver on palettes.

 

3. TECHNICAL DATA

  FK7300 FK7250 FK7200
Overall area [m²] 2,55 2,58 2,12
Absorber area [m²] 2,21 2,20 1,81
Aperture area [m²] 2,29 2,30 2,00
Dimensions [mm]:
Length 2356 2077 2039
Width 1081 1238 1039
Height 100 100 91
Overall collector weight [kg]: 48 49 39
Absorber capacity [l]: 1,5 1,6 1,4
Absorber coating:

high selective vacuum coating

Absorption 95,0 % +/- 2%
Emission 5,0 % +/- 2,0 %
Stagnation temperature: 180o C plus temperature ambient
Max. operating pressure: 10 bar
Design approval No.: TÜV 02 - 328 - 083
Heat transfer medium: Polypropylene glycol / water mixture