Evacuated Tube Collector for Ireland, the UK & Europe
Our evacuated tube collectors are the best performing solar panel on the market. The panel guarantees high energy yields with their small collector gross areas. Due to the circular absorber area, each individual tube always has the optimal adjustment towards the sun, this in turn ensures that both direct and diffuse solar radiation is optimally collected by the circular absorber. The copper absorber boosts the overall output of the panel along with the CPC mirror (Compound Parabolic Concentrator).
The Evacuated Tube consists of 3 main components
1. The Evacuated Tubes
The evacuated tubes are composed of two glass tubes which in each case are half spherically closed on one side and fused together on the other side. The gap between the tubes is evacuated. In addition, the internal glass tube has a highly selective layer on its external surface which acts as an absorber. It is an aluminum nitrite sputter layer which is characterised by very low emission and very good absorption.
Our evacuated tube collectors are so efficient that when mounted on an un-shaded southfacing roof - 18 tubes with 3m2 aperture area are sufficient to heat a 300 litre cylinder and provide enough hot water for up to 6 people
2. The CPC mirror
In order to increase the efficiency of the evacuated tube, a highly reflective, weather proof CPC mirror (Compound Parabolic Concentrator) is placed behind the evacuated tubes. The special mirror geometry ensures that even at unfavourable irradiation angles direct and diffuse sunlight falls onto the absorber. This substantially improves the energy yield of a solar collector
3. Collecting box and heat transfer unit
The insulated collecting and distribution pipes are located inside the collecting box. The fluid is pumped around the circuit absorbing heat in the solar panel and transferring it to the water in the hot water cylinder.
Technical Specifications
| Number of evacuated tubes | 18 |
|---|---|
| Yield forecast (area 3.22m2) | 733 kWh/m2a.08 x 1.64 x |
| Grid Dimensions (LxHxD, mm) | 2010x1603x140 |
| Gross Surface Area (m2) | 3.22 |
| Aperture Area (m2) | 2.84 |
| Collector contents (ltr) | 2.6 |
| Empty weight (Kg) | 65 |
| Commissioned weight inc. fluid (Kg) | 67.6 |
| Max working pressure (bar) | 6 |
| Max stagnation temperature | 249° C |
| Connection diameter, clamping ring | 18mm |
| Sensor Sleeve | 6mm |
| Collector material | Al/Cu/glass/silicone |
| Glass Tube material | Borosilicate glass |
| Selective absorber coating material | CERMET, Absorption 94%;Emission 6% |
| Colour (plastic parts) | Black |
| Tests and approvals | EN 12975-2, Solar, Keymark, ISO 9001 |
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