Products
Products

Close Loop Thermosyphon System(ALT-C)
How it works 

This type of solar water heater provides mains pressure pre-heating via a highly effective copper coil heat exchanger located within the solar collector tank. Rather than using the water in the tank directly, as the non pressure does, this type uses a 45 m copper coil.
Heat exchanger inside the tank which provides more than 2.5m 2 of heat transfer area. When water flows though the coil it absorbs heat FROM the water inside the solar collector tank. The solar collector tank is therefore a thermal store and amount of water you can draw is not restricted to size of tank.



Scheme


 

ALT-C 58/1800-20

ALT-C 58/1800-24

ALT-C 58/1800-30

Collector

Glass vacuum tube

Glass vacuum tube

Glass vacuum tube

Coating

Graded AI-N/AL on glass

Graded AI-N/AL on glass

Graded AI-N/AL on glass

Number of collecting tube

20 pcs

24 pcs

30 pcs

External diameter of tube

58mm

58mm

58mm

Length of tube

1800mm

1800mm

1800mm

Distance between tube

80mm

80mm

80mm

Absorber area

1.6m2

1.941m2

2.7m2

Aperture area

2.0m2

2.5m2

3.1m2

Type

Tank consists of a primary circuit at atmospheric pressure and a secondary circuit in a serpentine copper (bearing 6 bar working pressure)

Tank consists of a primary circuit at atmospheric pressure and a secondary circuit in a serpentine copper (bearing 6 bar working pressure)

Tank consists of a primary circuit at atmospheric pressure and a secondary circuit in a serpentine copper (bearing 6 bar working pressure)

Boiler material

Stainless steel

Stainless steel

Stainless steel

Boiler capacity

165L

200L

250L

External diameter

470mm

470mm

470mm

Thermal insulation

Polyurethane foam @ 55mm

Polyurethane foam @ 55mm

Polyurethane foam @ 55mm

Heat exchanger

14mm*1.0mm

14mm*1.0mm

14mm*1.0mm

Certification

EN12976

EN12976

EN12976