A revised Tesla uurbine concept for 2-phase applications

L. Talluri, P. Niknam, A. Copeta, M. Amato, P. Iora, S. Uberti, C. Invernizzi, G. Di Marcoberardino, L. Pacini, G. Manfrida, D. Fiaschi*

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

258 Downloads (Pure)


The Tesla turbine is an original expander working on the principle of torque transmission by wall shear stress. The principle - demonstrated for air expanders at lab scale has some attractive features when applied to two-phase expanders: it is suitable for handling limited flow rates (as is the case for machines in the range from 500W to 5 kW), it can be developed to a reasonable size (rotor of 0.1 to 0.25 m diameters), with acceptable rotational speeds (which range from 500 to 10000 rpm). The original concept was revisited, designing it for two-phase operation and considering not only the rotor configuration but the whole machine. The flow model was developed using complete real fluid assumptions including several new concepts such as bladed channels for the stator, labyrinth seals, and a rotating diffuser. Preliminary design sketches are presented, and results discussed and evaluated.

Original languageEnglish
Article number10006
JournalE3S Web of Conferences
Early online date16 Feb 2021
Publication statusPublished - 16 Feb 2021
Event2020 Applied Energy Symposium (ICAE), 100RES 2020 - Pisa, Italy
Duration: 29 Oct 202030 Oct 2020

Bibliographical note

Funding Information:
This research was funded by DIMI (University of Brescia) under the TEC (Tesla Expander Chiller) project.

ASJC Scopus subject areas

  • General Environmental Science
  • General Energy
  • General Earth and Planetary Sciences


Dive into the research topics of 'A revised Tesla uurbine concept for 2-phase applications'. Together they form a unique fingerprint.

Cite this