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Schittl, Florian
Research Outputs
Effizienzsteigerung von Wärmenetzen durch sorptionsbasierte Wärmeübergabestationen
2019-11, Schittl, Florian, Beckmann, Georg, Krail, Jürgen
Improved ORC Process for Power Production by using Low Temperature Heat
2022, Krail, Jürgen, Beckmann, Georg, Schittl, Florian
Improved ORC process for power production by using low temperature heat
2021-10-13, Krail, Jürgen, Beckmann, Georg, Schittl, Florian
Organic Rankine Cycles (ORC) are a modification of the classical water-steam process and are particularly suitable for electricity generation from low and medium temperature heat sources, e.g., industrial waste heat or geothermal energy. In contrast to the water-steam process, the ORC process uses organic fluids as working fluids. When using working fluids of the dry class (e.g. n-pentane), a recuperator is frequently installed in state-of-the-art ORC processes to increase the cycle efficiency. This paper analyses an improved ORC process design: A liquid working fluid stream is mixed with the vapour flow between the high-pressure stage and the medium-pressure stage of the turbine. Furthermore, the recuperator is replaced by a spray condenser. These two improvements were analysed by thermodynamic process simulations. As a use case, electricity production from clinker cooler waste heat at a temperature level of 275°C was simulated. The improved process as described would lead to an increase in the overall net efficiency up to 14%, compared to a state-of-the-art ORC process.
Die Anwendung der thermodynamischen Transformation im Fernwärmesektor
2019-11, Beckmann, Georg, Schittl, Florian, Krail, Jürgen