Abstract
A cooperation between Dürr AG, one of the world's leading suppliers for automobile manufacturing technology, and Industrial Solar GmbH, the leading supplier of high-quality solar process heat systems for industrial applications, is paving the way for a more sustainable automobile production technology. The first result from this cooperation was the Eco+Paintshop, in which a solar process heat system had been integrated to provide heat for the curing of autobody paint at 200°C [1].The consistent advancement and rigorous research of these partners lead to their latest sustainable technology: The Eco+Energy CPS Suntec – a combined heat and power system (CHP) that uses a micro gas turbine and a Fresnel collector field to provide process heat for paint shop convection ovens, along with electric power. The solar process heat generated by a Fresnel collector field is used to preheat the compressed combustion air of the micro gas turbine via a heat exchanger. By feeding in solar process heat, the consumption of fossil fuels can be reduced by up to 35% at nominal power. The overall efficiency, including the usage of the hot exhaust gas of the turbine (i.e. for an industrial application) can reach values beyond 90%. The integration of a micro gas turbine and a solar process heat system also improves the economic viability of the solar thermal system, promoting the dissemination of solar thermal technologies for industrial applications. The paper will present further technical details of the Eco+Energy CPS Suntec, describe the next steps of the product development, and present an outlook of the application of this solar CHP technology.
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