Solar Collectors

Solar Collectors image

Description:

Our solar collectors are characterised by extremely high absorption of radiation, low heat losses and an impressively long service life. As a result, the sum of all the technical components enables these collectors to achieve an extremely high efficiency, i.e. in excess of 80 %. They are only made from ecologically sound materials and represent the highest production quality.

Durability and high efficiency are the main characteristics of the absorbers that we manufacture.
The vertical and header tubes of the absorbers consist of copper and the absorbing surface could be in aluminium powder coated-black, copper with semi selective black paint (α>90%) and copper with selective treatment (α=95%(+-)2%, ε=4%(+-)2%).

Please check the following table for technical details of this part of the collector.

Absorbing Surface

Welding Method of the absorber on the tubes structure

Number of tubes according to dimensions

Dimensions of tubes

Powder Coated Aluminium (Black)

Mechanical Bonding

1480x1010mm

9 or 12

1980x1010mm

9 or 12

1480x1230mm

11 or 14

1930x1230mm

11 or 14

d.3/8" or d.10 or d.15

Copper with semi-selective black paint

Ultrasonic Welding

1480x1010mm

9 or 12

1980x1010mm

9 or 12

1480x1230mm

11 or 14

1930x1230mm

11 or 14

 

d.3/8" or d.10 or d.15

Copper with selective treatment (α=95%, ε=4%)

Ultrasonic Welding

1480x1010mm

9 or 12

1980x1010mm

9 or 12

1480x1230mm

11 or 14

1930x1230mm

11 or 14

d.3/8" or d.10 or d.15



The absorbers are manufactured with fins or with full plate copper.

Absorbers in other dimensions or with other specifications are available upon request.

Glass cover of the collector

The glass cover placed on the collectors is a special for solar collectors material with high transmission (over 88%), low iron content and high endurance.

According to customer demands we supply three types of mistlite glass:

  • Mistlite Simple Glass
  • Mistlite Tempered-Security Glass
  • Mistlite Tempered-Security Low Iron Glass (τ=92%)

1. Absorber Plate
Consists of copper or aluminum fins ultrasonically welded to copper risers, to provide excellent heat transfer between the fins and risers, ensuring high efficiency. Inexpensive yet durable aluminum absorber plate is available using laser welding of the latest generation.

2. Absorber Plate Coating
Coated either with a sputtering coating, or with black chrome on nickel, or with highly distinctive black solar paint. All allow excellent energy absorption even in cooler climates.

3. Insulation
The absorber plate is encased in 25 mm rigid polyurethane foam, with an option to additional layer of glass wool , retaining the collector's heat.

4. Solar Glass Glazing
The single pane 3.2 mm solar glass is patterned to reduce reflection and tempered to maximize strength and durability. The 0.03% low iron oxide content enables a high solar transmittance of 91%.

5. Casings
A. Aluminum
All anodized aluminum extrusion casings are made of solid construction available in a natural or black, or red color.

B. Galvanized Steel
Galvanized steel casings are available in black, grey or white polyester finishing.
finishes.

6. Tubing Grid
5/8'' or 8 mm copper risers brazed to 1 1/8" or 7/8'' copper manifolds with optimal flow distribution.

7. Piping Connection
Four 3/4" BSP female brass adaptors , flare for quick fittings or clear cut edge for connector brazing.

8. Back Plate
The back plate is made of black polypropylene sheet.

9. Aluminum Foil
The aluminum foil acts as a barrier against out-gassing, integrated to the insulation.


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