Evacuated tube technology at it's best

Viessmann offers a complete range of high-tech, state-of-the-art heating products, each a design-matched component in the progressive Viessmann system technology.

The quality of the Viessmann Vitosol 300 system is a natural fit into the Cascade Sun Works Signature Series of high performance heating systems.
 

Thanks to the highly effective Sol-Titan coating, the vacuum tube collector Vitosol 300 can even utilize diffused solar radiation. It is therefore suitable not only for domestic hot water applications, but also as a back-up for central heating purposes.

The benefits at a glance:
 

• High level of operational reliability and a long service life thanks to the use of high-grade, corrosion-resistant materials such as special solar glass, copper and stainless steel. Durable, vacuum-tight glass-to-metal seal.

• High efficiency thanks to the Sol-Titan coated absorber and vacuum collector tubes.

• Energy-efficient Duotec wrap-around pipe heat exchanger, which almost completely encases the condensers to facilitate better heat transfer.

• The condenser has a flexible connection to the vacuum tube via a stainless steel corrugated pipe. The individual tubes can be adjusted for optimum alignment to the sun during original placement.

• The dry connection of the collector tubes allows for individual tubes to be mounted and disassembled without having to drain the solar heating system.

• Proven Viessmann plug-in system for connecting several collectors to form one collector panel with a total surface area of up to 65 ft² - 6 m².
   

Built into each vacuum tube is a Sol-titanium coated copper absorber.  This ensures a high absorption rate of solar radiation and a low emission of thermal radiation

A heat pipe filled with an evaporator liquid is placed on the absorber.  The heat pipe is connected top to the condenser via a flexible coupling.  The condenser is installed in the Duotec double pipe heat exchanger.  This involves a dry connection, i.e. the pipes can be rotated or replaced even when the system is filled and under pressure.

Solar energy is transferred to the heat pipe, causing the liquid to evaporate.  The vapor rises in the condenser.  The heat is transferred by the double pipe heat exchanger.
 

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