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Focus Technology Solar Collector Technical Specification



Cut Away of Focus Technology Solar Collector




General Specifications


Collector Size

10 tubes

18 tubes

20 tubes (USA Only)

22 tubes

30 tubes

Overall Length

1980mm

Overall Height

156mm (manifold + standard frame)

Overall Width

796mm

1356mm

1496mm

1636mm

2196mm

Absorber Area

0.8 m2

1.44 m2

1.6 m2

1.76 m2

2.4 m2

Aperture Area

0.94 m2

1.69 m2

1.88 m2

2.07 m2

2.82 m2

Gross Area

1.57 m2

2.68 m2

2.96 m2

3.23 m2

4.35 m2

Gross Dry Weight

34.8kg

58.2kg

63.5kg

71.3kg

94.8kg

Fluid Capacity

290ml

490ml

520ml

550ml

710ml

Performance and Quality

Stagnation
SPF Report No. C632LPEN

245°C, when G = 1000W/m2, Ambient Temp =30°C
477°F, when G = 317Btu/ft2 , Ambient Temp = 86°F

Efficiency
SPF Report No. C632LPEN

No (-) = 0.717, a1 (W/m2K) = 1.52, a2 (W/m2K) = 0.0085
G = 800W/m2 / 253Btu/ft2 based on Absorber area.

Quality Certifications

SPF Solar Collector Quality Test Certificate No. C632QPEN
(SPF Quality Test According to: EN 12975-2: 2001, Section 5)

SRCC OG100 Award of Collector Certification
Certification No. 100-2004003A,B,C,D
Testing conducted by Bodycote Materials Testing Canada Inc.

Incidence Angle Modifier

0°

10°

20°

30°

40°

50°

60°

70°

80°

90°

K q (longitudinal)

0.93

K q (transversal)

1.0

1.02

1.08

1.18

1.37

1.4

1.34

1.24

0.95

0.0

cut away of focus technology manifold

Component Specifications

Copper Header

Material

>99.93% Copper
Sn<0.012%, Zn<0.04%, Pb<0.003%, Fe<0.004%, Ni<0.003%, As<0.002%, S<0.003%, Bi<0.001%, Sb<0.002%

Length (mm) Rear Port Models
(Inlet center to outlet center)

L= (X-1) x 70 + 80 (X=No. tubes)
L = (X-1) x 2.759” + 3.15”

Length (mm) End Port Models
(overall length)

L = (X-1) x 70 + 240 (X=No. tubes)
L = (X-1) x 2.759” + 9.45”

Header Pipe Dimensions

18mm OD x 1.2mm
0.7” OD x 0.047”

Brazing Rod Material

45% Silver, 30% Copper, 25% Zinc
Lead and Cadmium Free

Inlet & Outlet

22mm OD x 1.2mm
(Attachment by brass compression fittings only)

Temperature Sensor Port

10 OD x 1.0mm
0.39”OD x 0.039”

Recommended Flow Rate

0.1L/tube/min (10tube = 1 L/min)
0.026G/tube/min (10tube = 0.26G/min)

Max Flow Rate

15L/min / 3.9G/min regardless of collector size.

Pressure Drop

0.7kPa @ 3.3L/min for 20 tube manifold

Max Operating Pressure Rating

800kPa / 116psi

(850kPa / 123psi PRV acceptable)

Manifold Casing

Manifold Length

L= (X-1) x 70mm + 160mm (X=No. tubes)
L = (X-1) x 2.759” + 6.3”

Lid Length (mm)

Manifold Length + 6mm / 0.236”

Height (lid on)

131mm / 5.157”

Width

140mm / 5.512”

Tube Spacing

70mm / 2.759”

Manifold Material

0.8mm Aluminium (Grade 3A21)
Plastic Powder Coated (UV Stabilised)

Frame

Material

304-2B Stainless Steel

Thickness

1.5mm / 0.059”

Bolts, Washers and Nuts

304 Stainless Steel

Insulation

Material

Compressed Glass Wool

Insulation Factor

K = 0.043W/mK

Max Working Temp

300°C / 577°F


Solar Tubes (Solar Absorber)

Tube Length

1800mm
(Actual length to tip = 1810-1830mm)

Outer Tube Dimensions

Æ 58mm x 1.6mm / Æ 2.28” x 0.063”

Inner Tube Dimensions

Æ 47mm x 1.6mm / Æ 1.85” x 0.063”

Weight

2kg / 4.4pounds

Solar Tubes Material

Borosilicate Glass 3.3

Solar Tube Coating

Graded-index coating Al-N on Al on glass

Thermal Expansion

3.3x10-6 oC

Absorptance ( a )

>92% (AM1.5)

Emittance ( e )

<8% (80 oC)

Vacuum

P<5x10-3 Pa

Stagnation Temperature

>200°C

Heat Loss

<0.8W/ (m2°C)

Maximum Strength

0.8Mpa

Absorber Area per Tube

0.08m 2

Heat Pipes & Heat Transfer Fins (Heat Transfer)

Length

1800mm 70.8”

Material

Oxygen Free Copper (TU1) Cu+Ag> 99.99% (O 2 <16ppm)

Copper Pipe Dimensions

Æ 8mm OD x 0.7mm thick

Condenser Dimensions

20mm OD x 30mm

Heat Transfer Material

Purified Water (Non Toxic)

Maximum Working Temperature

300°C

Startup Temperature

<30°C

Vacuum

P<5x10-3 Pa

Vertical Installation Angle

20-70°

Horizontal Installation Angle

0° +/- 5°

Heat Transfer Fins

0.2mm thick Hot Dipped Zn Coated Iron
(Q235 grade steel, 100g/m 2 Zn coating)

Freeze Protection Sleeve

Æ 8mm OD x 1mm x 150mm 304-SS

Rubber Components

Material

UV Stabilised Silicone Rubber

Density

1.15 g/cm 3 +/- 0.05

Durometer Hardness (Shore A)

54

Elongation

320%

Rebound

54%

Maximum Working Temperature

300°C

Tensile Strength

6.4 Mpa

Tear Strength

12.5 KNM

Independant Test Report Performance

Independant Test Report Quality

 

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