SEIDO1 series Heat Pipe Vacuum Tube Solar Collector
SEIDO1-8
SEIDO1-16
SEIDO1-8AS
SEIDO1-16AS
Features

 

High efficiency
Antifreeze
Fast start-up due to small thermal capacity
Low heat loss due to thermal diode effect
High vacuum with long-tem stability

High pressure resistance
Reliability and durability
Easy installation and maintenance
Easy integration into buildings

Principle

Sunda collector modules consist of an array of SEIDO evacuated tubes, insulated manifold header, support frame and standard frame package for single roof installation. Manifold headers have capacities of 8, 16 tubes. The collector manifold casing and end cap are made of powder-coated aluminium profile. The copper inlet and outlet pipe nipples come standard in Ø22 mm, making plumbing connections quick and easy using readily available metric compression fittings. The connection between the heat pipe and manifold is critically important to ensure optimal heat transfer. The manifold header pipe is mounted within the manifold casing and is made of Ø28 mm, 1 mm thick copper pipe rated for a maximum pressure of 10 kg/cm² - standard use is 6 kg/cm². The heat pipe vacuum tube collects heat from sun working with high efficiency and absorbing up to 92% of the incoming irradiation. Thereafter, the condenser of the heat pipe will transfer the heat to the manifold where the water is heated. The heated water will circulate in the system until the required temperature is attained. The heat transfer liquid of the heat circuit does not flow through the collector itself. This allows a very simple installation and guarantees an exceptionally trouble-free operation. The operation of the system will not be interrupted even if one of the collector tubes should get damaged. The manifold is mounted in a FCKW-free insulated box that largely protects the collector against heat loss. With its two vertical supports and the bottom support the insulated box provides a stable frame for the collector module.

Technical data

Module type

SEIDO1-8

SEIDO1-16

SEIDO1-8AS

SEIDO1-16AS

Tube construction

SEIDO1--- Heat pipe vacuum tube with flat absorber

Certificate

EN 12975

Angle of inclination

15 ° to 90 °

Number of collector tubes

8

16

8

16

Absorber area

1.38 m²

2.77 m²

1.38 m²

2.77 m²

Aperture area

1.51 m²

3.01 m²

1.51 m²

3.01 m²

Gross area

2.04 m²

4.08 m²

2.10 m²

4.16 m²

Length x width x height (mm)

2126x960 x175

2126x1920x175

2142x980 x187

2142x1940x187

Weight

50 kg

100 kg

50 kg

100 kg

Efficiency curve









Pressure drop per module

<5 mbar (100L/h)

<12 mbar (200L/h)

<5 mbar (100L/h)

<12 mbar (200L/h)

Fluid content per module

0.48 L

0.96 L

0.48 L

0.96 L

Glass material

Borosilicate glass

Glass tube diameter

100

Wall thickness

2.8mm

Transmittance

>0.90

High vacuum, long-term stability

<10-5 mbar

Absorber material

Aluminium

Selective coating

Aluminium nitride

Absorptance

>0.94

Emittance

<0.06

Header box material

Aluminium

Aluminium alloy

Header box diameter

100 mm

130 mm

Insulation

Polyurethane foam

Max. Operating pressure

6 bar

Stagnation temperature, module

190°

Stagnation temperature, pipe

247°C

Assembling components

Stainless steel vertical supports and bottom supports, aluminum/aluminum alloy header box, 30 mm thickness polyurethane insulation

Connection

Compression fitting, 22mm

Application

Customization and convenience

SEIDO1 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 SEIDO1 solar collectors is their versatility. One of the application areas for SEIDO1 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, SEIDO1 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.