Customized ORC micro turbo-expanders - From 1D design to modular construction kit and prospects of additive manufacturing
| Autor: | Gerd Zinn, Václav Novotný, Michal Kolovratnik, Andreas P. Weiß, Philipp Streit, Jan Spale, Tobias Popp |
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| Rok vydání: | 2020 |
| Předmět: |
Cantilever
Computer science business.industry 020209 energy Mechanical Engineering Design tool Turboexpander Nozzle Mechanical engineering 3D printing 02 engineering and technology Building and Construction Inflow Pollution Turbine Industrial and Manufacturing Engineering General Energy 020401 chemical engineering 0202 electrical engineering electronic engineering information engineering 0204 chemical engineering Electrical and Electronic Engineering business Civil and Structural Engineering Ram air turbine |
| Zdroj: | Energy. 209:118407 |
| ISSN: | 0360-5442 |
| DOI: | 10.1016/j.energy.2020.118407 |
| Popis: | Due to the various ORC applications, it is not expedient to design and build one standard turbogenerator. Therefore, authors developed a flexible “micro-turbine-generator-construction-kit (MTG-c-kit)” by means of which a customized turbogenerator can be made for any required power output between 1 and 200 kW, for a wide range of working fluids and boundary conditions – quickly, cost effectively and with high expander efficiency. The architecture and main features of this kit are briefly introduced. However, more focus is put on the developed 1D turbine design tool. It allows to quickly design and optimize a single stage turbine for any fluid and boundary conditions. The implemented models are presented on two specific design examples - an axial impulse and a radial inflow cantilever turbine. Also, the experimental results of the two micro turbines designed and built according to this approach, are presented and discussed. Focusing to further accelerate and cheapen the customized micro-turbogenerators for low temperature applications, we provide an outlook of possibilities of additive manufacturing methods like 3D printing of turbine nozzles and rotors. These new possibilities provide potential to improve the competiveness of small-scale ORC. A simple air turbine design with plastic and metal components has been manufactured and tested. |
| Databáze: | OpenAIRE |
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