We use cookies and similar technologies on this website ("Cookies"). In order to allow their use to analyze website usage and to enhance functionality, please click on “Accept”. To change the settings and select which specific Cookies we are allowed to use, or to obtain more detailed information, please click on “Details”.




Below, you can activate/deactivate the individual technologies that are used on this website.
Consent to all

These Cookies make a website usable by providing basic functions such as page navigation, language settings, and access to protected areas. As the website is unable to function properly without them, you cannot opt out of this kind of Cookies.


These Cookies help us to improve the functionality and attractiveness of our websites, and your user experience by saving, for example, your settings, and selections as well as filters, and to recognize your device on subsequent visits.


These Cookies allow us, and the service providers (e.g. Google via the Google Analytics service) to collect and analyze information and statistics about your interaction with our website. This helps to optimize our website using the findings obtained.

Press Release

Environmental Technology Award for Dürr’s energy-efficient ORC technology

Bietigheim-Bissingen, July 12, 2013 - Dürr came first in the “Energy Efficiency” category of the Baden-Württemberg Environmental Technology Award 2013 for further developing its ORC technology. ORC modules are a cost-efficient way to generate electricity from waste heat. In addition, Dürr’s new award-winning ORC generation, for the first time, allows combined heat and power to be used even in small-scale applications. The modules not only produce electricity but also supply residual heat, which can be recycled.

Franz Untersteller, Minister of the Environment of the Federal State of Baden-Württemberg: “Process waste heat, and concepts that allow us to utilize or optimize it, are a key issue for the future. That’s why innovations in this area such as the ORC technology of Dürr Cyplan are so important”.

ORC stands for Organic Rankine Cycle, a thermal cycle process in which an organic fluid is evaporated with the help of waste heat. The steam powers a generator, which provides electricity. The advantage of ORC systems is that, unlike conventional steam processes, they can operate with lower waste heat temperatures.

ORC systems are suitable for use with a variety of waste heat sources, for example in biogas plants, landfills and sewage treatment plants, or in industrial production. Thanks to Dürr’s direct evaporation technology, up to 20% of the waste heat can be converted to electricity. 80% of the energy entering the system is available for downstream heat recovery with temperatures of up to 90°C. Dürr offers combined heat and power (CHP) even for small-scale applications from 40 kW.

One example of a CHP application is the ORC system used by the German municipal utility company Stadtwerke Groß-Gerau. The system increases the energy production of a biogas CHP plant by 560 MWh per year – without the need for additional fuel. The residual heat supplied by the ORC system is used to heat buildings and for drying processes in a neighboring business.

Ralph Heuwing, Dürr AG’s CFO and Board member responsible for the Clean Technology Systems division: “ORC is a technology of the future, combining energy efficiency and decentralized energy generation. Thanks to its compatibility with a number of different waste heat sources, ORC is a highly flexible technology that is suitable for a wide range of applications.”

In addition to ORC, Dürr also offers other technologies for the efficient use of heat and waste heat. These include heat pumps, heat exchangers, latent heat storage systems and the Dürr Compact Power System, which provides electricity and heat at the same time. Dürr’s Clean Technology Systems division, which brings together the company’s energy efficiency and environmental technology business operations, has set itself the target of achieving sales of around € 200 million by 2015.  


About the Baden-Württemberg Environmental Technology Award

The Environmental Technology Award is presented every two years by the Baden-Württemberg Ministry of Environment, Climate and Energy. It recognizes outstanding and innovative products and processes in the field of environmental technology. The award is divided into four categories: “Energy Efficiency”, “Material Efficiency”, “Technologies for Emission Reduction, Treatment and Separation” and “Measuring and Control Systems”.

Dürr is a mechanical and plant engineering group that holds leading positions in the world market in its areas of operation. It generates a good 80% of its sales in business with the automotive industry. It also supplies the aircraft, machinery, chemical, and pharmaceutical industries with innovative production and environmental technology. The Dürr Group operates in the market with four divisions: Paint and Assembly Systems plans and builds paint shops and final assembly systems for the automobile and aircraft industries. Application Technology provides automated paint application, sealing, and glueing with its robot technologies. Machinery and systems from the Measuring and Process Systems division are used for balancing and cleaning and in engine and transmission manufacturing as well as in final vehicle assembly, among other areas. The fourth division, Clean Technology Systems, specializes in processes to improve energy efficiency and exhaust air purification. Dürr has 52 business locations in 23 countries worldwide and approximately 7,800 employees. The Group achieved sales revenues of € 2.4 billion in 2012.