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4 BINE-Projektinfo 0131/20101 Project organisation Federal Ministry of Economics and Technology (BMWi) 11019 Berlin Germany Project Management Organisation Jülich Research Centre Jülich Dr. Carsten Magaß 52425 Jülich Germany Project number 0327436A, 0327436C, 0327436D 0327436E, 0327436F Imprint ISSN 0937 - 8367 Publisher FIZ Karlsruhe · Leibniz Institute for Information Infrastructure Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany Author Peter Horenburg Cover image DeVeTec GmbH Copyright Text and illustrations from this publication can only be used if permission has been granted by the BINE editorial team. We would be delighted to hear from you. Contact · Info Questions regarding this Projektinfo brochure? We will be pleased to help you: +49 228 92379-44 BINE Information Service Energy research for practical applications A service from FIZ Karlsruhe Kaiserstrasse 185-197 53113 Bonn Germany Phone + 49 228 92379-0 Fax + 49 228 92379-29 kontakt@bine.info www.bine.info The market for wasted energy It seems ridiculous in light of industry complaints about excessive energy prices: the market value of the unused waste heat in Germany exceeds 25 billion euros a year. Researchers have calculated that the final energy consumption for industrial process heat, which amounted to 1,600 petajoules (PJ) in 2007, was equivalent to around two thirds of the final energy requirements of Germany’s industry in the same year. The waste heat is created almost everywhere, whereby the sources are diverse: machines that release heat to their surroundings, waste water from washing, dyeing and cooling processes as well as exhaust gases from ovens and engines. For temperatures greater than 140 °C, it is estimated that in economic terms German industry has a waste heat potential of 316 PJ per year or 12% of the final industrial energy consumption and a further 160 PJ per year for temperatures between 60 and 140 °C, whereby this does not even take into account the potential provided by small and medium-sized companies or new CHP plants. With domestic energy generation amounting to around 4,000 PJ each year, probably up to around 1,000 PJ or almost a quarter of the energy generated in Germany is wasted as exhaust heat. Since the thermal utilisation of waste heat is limited in many places, a particularly attractive aspect is the ability to use the waste heat to generate electricity, which can be more diversely used. Particularly the efficiency of engines used in CHP plants operated with (bio)gas can be considerably improved by utilising their exhaust heat. The developers of new ORC modules with turbines or steam expansion engines promise to increase the electrical power yield in addition to the engine output by up to 14 per cent. The researchers therefore want to realise the vision of decentralised engine combined cycle power plants with overall electrical efficiencies of almost 50 per cent. These “ECC” power plants enable decentralised electricity generation to approach the efficiency of modern large-scale power plants using technology that can be immediately implemented. There would also be much to be gained in climate policy terms if the otherwise “cooled away” waste heat were to be transformed into electricity. The utilisation of a typical industrial waste heat source of 2 MW can prevent more than 4,000 tonnes of CO2 each year. In order to systematically develop such waste heat sources, public registers are being set up in increasingly more federal states in Germany. In Saxony a “waste heat atlas” is being created and in Saarland a “heat sink register”. Project participants >> Steam expansion engine: DeVeTec GmbH, Michael Schmidt, Saarbrücken, Germany, info@devetec.de >> Turbines: Fraunhofer Institute for Environmental, Safety and Energy Technology (UMSICHT), Dr.-Ing. Wilhelm Althaus, Oberhausen, Germany, Wilhelm.Althaus@umsicht.fraunhofer.de >> Working fluids: Evonik Industries AG – Creavis Technologies & Innovation, Dr. Jens Busse, Marl, Germany, info-creavis@evonik.com >> Heat exchangers: SCHOTT AG – Research and Technology Development, Dr. Norbert Greulich-Hickmann, Mainz, Germany, norbert.greulich-hickmann@schott.com Links and literature (in German) >> www.devetec.de. | www.umsicht.fraunhofer.de | www.ifeu.de >> Schmidt, M.; Meyer, J.: ORC-Pilotanlage. Forschungs- und Demonstrationsprojekt eines statio- nären Dampfexpansionsmotors. Forschungskurzbericht. DeVeTec GmbH, Saarbrücken (Hrsg.). 2009. FKZ 0327436A. Available on loan from TIB Hannover, Germany, Signature F 10 B 1081 More from BINE Information Service b This Projektinfo brochure is available as an online document at www.bine.info under Publications/Projektinfos. Additional information in German, such as other project addresses b and links, can be found under “Service”. BINE Information Service reports on energy research projects in its brochure series and newsletter. You can subscribe to these free of charge at www.bine.info/abo. Concept and design: iserundschmidt GmbH, Bonn – Berlin, Germany · Layout: KERSTIN CONRADI · Mediengestaltung, Berlin, GermanyPDF Image | Transforming waste heat into electricity
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