CPC6 Tubes
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Evergreen Energy Solar – CPC 6 Lite

The CPC 6 Lite brings you an evacuated tube panel with outstanding design, professional processing and high energy yield. Also, due to the CPC 6 Lite's low weight and easy to handle size it can easily be manoeuvred into position by one man

Technology

The CPC stainless steel evacuated tube collector is a specialist system developed especially for solar water heating and for solar backup heating. The low pressure loss allows several modules to be connected in series. Aperture area measurements of 1.0 sq meters allows for accurate adjustment to water and/or space heating requirements.  Careful attention has also been made to details that are important to mounting the system, where maximum movement of the rails to the anchor point means that even the least accurate installer can get the rails into a straight line.
To increase the efficiency of evacuated tube collectors, a highly reflective, weather-proof CPC reflector (Compound Parabolic Concentrator) is fitted behind the evacuated tubes. This special, improved geometry of the reflector ensures that direct and diffuse sunlight falls onto the absorber even when the angle of incidence is not ideal.  This considerably improves the energy yield from the collectors over a system without CPC reflectors.

The evacuated tube is a product with improved geometry and performance. The evacuated tubes consist of two concentric glass tubes that are sealed in a semi-circular shape on one side and are joined to one another on the other side. The space between  the tubes is evacuated and then hermetically sealed (evacuated insulation).

To use solar energy, the internal glass tube is coated with an environmentally friendly, highly selective layer on the outside, thus turning it into an absorber. The coating is protected in the evacuated space. The aluminium nitrite sputter coating used is characterised by extremely low emissions and excellent absorption

Number of tubes

6

ŋ0 in relation to aperture

64.2%

ŋ1 with wind, in relation to aperture

0.89 W/(m2k)

ŋ2 with wind, in relation to aperture

0.001 W/(m2k2)

Yield forecast (location Wurzburg, Germany, reference area 3m2)

651 kWh/m2a

Yield forecast (location Wurzburg, Germany, reference area 5m2)

589 kWh/m2a

Grid dimensions (L x H x D)

0.7 x 1.64 x 0.1 m

Gross surface area

1.15 m2

Aperture area

1.0 m2

Collector contents

0.8L

Weight

19kg

Max working over-pressure

10 bar

Max stagnation temperature

272 °C

Connection diameter, compression fitting

15mm

Sensor sleeve

6mm

Collector material

Aluminium / Copper / Glass / Silicone / PBT / EPDM / TE

Glass tube material

Borosilicate glass 3.3

Selective absorber coating material

Aluminium nitrate

Glass tube (diameter ext. / diameter int. / wall thickness / tube length)

47 / 37 / 1.6 / 1500 mm