| Issue |
MATEC Web Conf.
Volume 383, 2023
22nd Conference on Power System Engineering
|
|
|---|---|---|
| Article Number | 00023 | |
| Number of page(s) | 15 | |
| DOI | https://doi.org/10.1051/matecconf/202338300023 | |
| Published online | 20 October 2023 | |
CuRAX – a new concept of a velocity-compounded radial micro-turbine for waste heat recovery
OTH Amberg-Weiden, Center of Excellence for Cogeneration Technologies, Kaiser-Wilhelm-Ring 23, 92224 Amberg, Germany, +49 9621 482 3531
* Corresponding author: a.weiss@oth-aw.de
The paper introduces and discusses the new concept of a velocity-compounded, radial entry axial outlet Curtis turbine – called CuRAX. First, the motivation for the new turbine concept is discussed and the consideration which led to the CuRAX architecture is introduced. A 5 kWel air CuRAX turbine demonstrator was designed, following the in-house design procedure, and numerically and experimentally verified. The flow field shows the expected pressure and velocity distribution of a velocitycompounded turbine. However, potential for improvements is also obvious. The experimental results show the superiority of the CuRAX turbine at its design speed of 29,000 rpm with 50% total-to-static isentropic efficiency compared to 46 % of the quasi-impulse cantilever turbine – its direct competitor.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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