U pipe solar water heater collector system working principle:

In each vacuum tube there is a U pipe with direct flow-through that is connected to the header pipe inside manifold. This U pipe is seamed in an aluminum heat transfer fin in the interior of vacuum tube that transmits the heat from the interior tube to the U pipe.
Solar radiation permeates the outer glass tube and is captured on the outside of inner glass tube by highly selective sputter layer. The captured solar radiation is transmitted to flush-contact aluminum shield and then copper pipe filled with heat transfer fluid. The 360° Aluminum heat transfer fin assures the fastest energy transfer.

Each AKU is individually tested for leakage and other defects. Anodized aluminum case and frame ensure no corrosion will happen to AKU collector.

The AUCKLAT U pipe solar collector consists of 3 main components:
1. ALL glass vacuum tube
2. Heat transfer system(solar cycle)
3. Frame

Technical specification:

Model Name
AKU10/47
AKU16/47
AKU12/58
AKU20/58

Manifold casing material
Anodized aluminum
Anodized aluminum
Anodized aluminum
Anodized aluminum

Frame material
Anodized aluminum
Anodized aluminum
Anodized aluminum
Anodized aluminum

Header pipe material
Copper
Copper
Copper
Copper

U pipe material
Copper
Copper
Copper
Copper

U pipe diameter
8mm
8mm
8mm
8mm

No. Of pipes
10
16
16
20

Diameter/length of Vacuum tube
47mm/1500mm
47mm/1500mm
58mm/1800mm
58mm/1800mm

No. Of vacuum tube
10
16
12
20

Aperture area
0.61m2
1.00m2
1.08m2
2.03m2

Gross area
1.2m2
1.93m2
2m2
3.00m2

Insulation
Rock wool
Rock wool
Rock wool
Rock wool

Rubber seals and rings
UV stabilized silicon rubber
UV stabilized silicon rubber
UV stabilized silicon rubber
UV stabilized silicon rubber

Test pressure
9 bar
9 bar
9 bar
9 bar

Collector mounting
Flat roof/inclined roof
Flat roof/inclined roof
Flat roof/inclined roof
Flat roof/inclined roof

Mounting angle
0 degree-90 degree
0 degree-90 degree
0 degree-90 degree
0 degree-90 degree

Gross weight
28KG
40KG
43KG
65KG

Advantages:

1. No efficiency decrease during service life time

2. No external pipe lines

3. One-side in-/outlet and hence only one roof penetration

4. Best possible insulation

5. Anodized aluminum casing and frame and anti corrosion

6. Angle adjustable frame

7. Pre-assembled unit and no tube assembling is necessary

8. Ideal for both flat roof and inclined roof

9. Pre-assembled packing