Much waste heat is generated in industrial production and power generation. It is estimated that a quarter of energy production in Germany is lost this way. Waste heat is currently often emitted into the atmosphere unused because there are no suitable technical procedures that allow it to be used efficiently.
In order to utilise these untapped energy resources and turn them into electricity, a technology company from Saarland, Germany, has combined a steam expansion engine with ORC technology. The BINE Projektinfo brochure “Transforming waste heat into electricity” (13/2011) introduces the system and some initial results from a field test.
ORC processes work like a conventional steam power plant. The only difference is that they use an organic working fluid, which evaporates at lower temperatures than water. This process allows the utilisation of heat at temperatures between 200 and 500 °C to produce electricity. Until now, the ORC process has usually been used in combination with turbines, which, however, has lower part-load efficiency. Combining it with a steam expansion engine proves to be more flexible. Here, it is possible to adapt it to different levels of temperature and pressure. Given the same level of heat, an ORC process together with the steam expansion engine can generate significantly more electricity than in combination with turbines. Any waste heat still remaining after the generation of electricity can then be used for heating purposes.
The new system is currently being tested in several branches as part of a field test and is expected to be ready for market in 2013. Around 500 industrial firms in Germany, especially in the areas of metal processing, glass production, the chemical and paper industry as well as around 1,000 larger CHP plants are potential areas of application.Press contact
About FIZ Karlsruhe
FIZ Karlsruhe is a member of the Leibniz Association (WGL) which consists of 87 German research and infrastructure institutions.
Rüdiger Mack | idw
Neuron and synapse-mimetic spintronics devices developed
17.04.2019 | Tohoku University
New discovery makes fast-charging, better performing lithium-ion batteries possible
16.04.2019 | Rensselaer Polytechnic Institute
Researchers led by Francesca Ferlaino from the University of Innsbruck and the Austrian Academy of Sciences report in Physical Review X on the observation of supersolid behavior in dipolar quantum gases of erbium and dysprosium. In the dysprosium gas these properties are unprecedentedly long-lived. This sets the stage for future investigations into the nature of this exotic phase of matter.
Supersolidity is a paradoxical state where the matter is both crystallized and superfluid. Predicted 50 years ago, such a counter-intuitive phase, featuring...
A stellar flare 10 times more powerful than anything seen on our sun has burst from an ultracool star almost the same size as Jupiter
A localization phenomenon boosts the accuracy of solving quantum many-body problems with quantum computers which are otherwise challenging for conventional computers. This brings such digital quantum simulation within reach on quantum devices available today.
Quantum computers promise to solve certain computational problems exponentially faster than any classical machine. “A particularly promising application is the...
The technology could revolutionize how information travels through data centers and artificial intelligence networks
Engineers at the University of California, Berkeley have built a new photonic switch that can control the direction of light passing through optical fibers...
Physicists observe how electron-hole pairs drift apart at ultrafast speed, but still remain strongly bound.
Modern electronics relies on ultrafast charge motion on ever shorter length scales. Physicists from Regensburg and Gothenburg have now succeeded in resolving a...
17.04.2019 | Event News
15.04.2019 | Event News
09.04.2019 | Event News
24.04.2019 | Trade Fair News
23.04.2019 | Information Technology
23.04.2019 | Earth Sciences