A4 Conference proceedings

Measurement System of Small-Scale High Expansion Ratio ORC Turbine

Open Access publication

Publication Details
Authors: Uusitalo Antti, Zocca Marta, Turunen-Saaresti Teemu
Editors of book: Pini, M., de Servi, C., Spinelli, A., di Mare, F., Guardone, A.
Publication year: 2021
Language: English
Title of parent publication: NICFD 2020: Proceedings of the 3rd International Seminar on Non-Ideal Compressible Fluid Dynamics for Propulsion and Power
Start page: 114
End page: 122
Number of pages: 9
ISBN: 978-3-030-69305-3
eISBN: 978-3-030-69306-0
ISSN: 1382-4309
eISSN: 2215-1826
JUFO level of this publication: 2
Open Access: Open Access publication
Location of the parallel saved publication: http://urn.fi/URN:NBN:fi-fe2021050629057


Small-scale and high temperature ORCs have received increasing interest in recent times. This type of power systems can have high expansion ratio turbines with gas dynamic effects differing significantly from the behaviour of ideal gases, as the turbines are often operated in the non-ideal dense-gas region. One of the most crucial steps leading to future improvement of turbine efficiency and to the development of design guidelines and loss analysis methods is to validate the applied design methods and loss correlations with
experimental data. However, accurately measuring the performance of ORC turbines can be challenging. Indeed, despite the high pressure ratios, the temperature drop across the turbines remains rather low, and the physical size of turbomachinery tends to be small. In this paper, updates to the measurement system of the 10 kW LUT micro-ORC test-rig operating with siloxane MDM are presented. Further measurement points are placed at turbine inlet and outlet, and inside the turbine stator, with the aim of obtaining accurate performance maps and turbine loss analysis from future experimental runs.

Last updated on 2021-31-08 at 09:43