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September 2015

SONTEC sensors for VIESSMANN solar plants and heating systems - Hot stuff in the pipeline

ALLENDORF (wl) – VIESSMANN is one of the internationally leading manufacturers of heating, industrial and cooling systems. Consequently systems for all energy sources and power ranges were brought onto the market, such as solar technology modules, heat pumps or the first fuel cells heating device to be produced in a series in the world. Sensors suited to specific applications by SONTEC provide, for example, operational resistance for solar plants of up to 300°C.
The family business VIESSMANN is considered a technological trendsetter in the heating sector and for decades has already been producing heating systems for oil and gas that are particularly low in harmful substances and energy efficient, as well as solar plants, wood combustion systems and heat pumps. Today the corporate group has around 11,500 employees worldwide, the group turnover currently amounts to 2.2 billion euros. The company has always recognised the principle of sustainability - one of six company policies which act as a sort of constitution at VIESSMANN.
One of the company policies with the title “top quality” additionally describes the in-house expectation for processes and products. As an employee in the Research and Development department, Klaus-Dieter Arnold has to therefore fulfil high standards when working with solar plants with flat and vacuum pipe collectors: “Since it can reach up to 270°C at midday in high summer on the roof in a solar plant, all installed components should be able to safely withstand 300°C.”
A big challenge for the materials used, for example for the temperature sensors. These inform the in-house control technology which temperatures are currently “coming from the roof” and can be brought into the heat accumulator. “However, if the accumulator is heated up, the heat from the roof can no longer be discharged, and it can reach very high temperatures in the plant,” as Klaus-Dieter Arnold knows. ...

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