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Sustainable electricity generation at low temperatures


Credit: Markus Breig/Amadeus Bramsiepe, KIT
Low-temperature heat in the form of waste heat from industry or geothermal power plants offers big potential for sustainable and need-tailored power supply. The Modular Low-temperature Cycle Karlsruhe (MoNiKa), the only research facility of this kind in Europe, has now started operation at Karlsruhe Institute of Technology (KIT). Work is aimed at enhancing efficiency and environmental compatibility of the conversion of excessive heat into electric power by means of the organic Rankine cycle (ORC).
In the past years, low-temperature heat gained importance for efficient electricity generation with low CO2 emissions. Instead of releasing excessive heat into the environment, it makes more sense to use it and to produce electricity from it, says Dr. Dietmar Kuhn, Head of the Energy and Process Engineering Group of KIT s Institute for Thermal Energy Technology and Safety (ITES). So-called ORC facilities are used to convert heat with ....

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Anti-reflective films: What high-tech can learn from plants


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IMAGE: Solar modules without (left) and with (right; visualized) Phytonics film. The film almost completely suppresses reflection for all wavelengths and angles of incidence of light.
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Credit: Photos by Andrea Fabry; Editing by Phytonics
The high-tech company Phytonics, a spinoff from the Karlsruhe Institute of Technology (KIT), gets inspired by plants: The Phytonics film with micro- and nanostructures modeled on rose petals provides an anti-reflective coating for all kinds of surfaces, makes solar modules up to ten percent more efficient, and gives many objects a noble velvety appearance. At the Hannover Messe 2021 from April 12 to 16, the innovation will be showcased at KIT s virtual booth Future Hub. ....

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