SEIDO8 series horizontal heat pipe vacuum tube solar collector has application advantages of both SEIDO1 heat pipe vacuum tube and SEIDO2 direct flow vacuum, which can be installed in horizontal, easy to installation and maintenance and be integrated into building for best appearance.

Heated by the sun, the medium evaporates and moves to the colder part of the tubes, where the steam condenses and transfers the heat to the header. The water then re-enters the circuit, where it is heated again.

Module type

SEIDO8-8AD

SEIDO8-16AD

Tube construction

SEIDO8--- Heat pipe vacuum tube with flat absorber

Certificate

ISO9806

Angle of inclination

>1°

Number of collector tubes

8

16

Absorber area

1.4 m²

2.9 m²

Aperture area

1.45 m²

3.01 m²

Gross area

2.08 m²

4.15 m²

Length x width x height (mm)

2162x940 x172

2162×1892×172

Weight

50 kg

100 kg

Efficiency curve

Pressure drop per module

1095Pa (0.019L/(s*m&sup2))

2190Pa (0.019L/(s*m²))

Fluid content per module

0.48 L

0.96 L

Glass material

Borosilicate glass

Glass tube diameter

100

Wall thickness

2.8~3.0mm

Transmittance

>0.91

High vacuum, long-term stability

<10^-5 mbar

Absorber material

Copper Aluminium Compound

Selective coating

Aluminium nitride

Absorptance

0.95±0.02

Emittance

0.05±0.02

Header box material

Aluminium alloy

Header box dimension

ф130 mm

Insulation

Polyurethane foam

Max. Operating pressure

6 bar

Stagnation temperature, module

190°

Stagnation temperature, pipe

260°C

Support

Aluminium alloy

Connection

Compression fitting, 22mm

Customization and convenience

SEIDO8 solar collectors are available in four different models. The condensers of the collector tubes have a plug-in structure to make the tubes removable. The plug-in structure guarantees an easy installation since all parts are installed separately. Single tubes can conveniently be replaced without shutting the system down.

Top performance and versatility

An important asset of SEIDO8 solar collectors is their versatility. One of the application areas for SEIDO8 solar collectors is domestic water heating. Therefore installation requires remarkably little space making them practically applicable at any domestic place. Despite their little size, the collectors still cover over 70% of the hot water needs of an average household. Their excellent efficiency makes them also suitable for the operation of larger systems for commercial or public use. In addition, SEIDO8 solar collectors are also applicable for space heating and air-conditioning.

A circuit and a system

A self-contained heating circuit transports the heat from the collector to the inhouse hot-water storage tank (approx.300L). There the heat is passed on to the inhouse hot-water storage tank by a heat exchanger and the water for domestic use is heated. When the heat supplied by the collector is not sufficient to attain the desired temperature, a conventional heating system takes over and completes the heating process. An electronic control unit (different-temperature regulator) constantly checks whether the temperature at the collector opening is greater than the temperature in the inhouse hot-water storage tank. If this is the case, the control unit switches on the heating circuit.