Marine Engines and Auxiliary Machinery   
DOI: https://doi.org/10.24866/2227-6858/2021-2-2

Ibragimov D., Ilyinsky Yu., Moroz I., Prikhodko N.

DAMIR IBRAGIMOV, Candidate of Engineering Sciences, Associate Professor (Corresponding Author), ORCID: https://orcid.org/0000-0002-8076-6051, damir-vl@mail.ru
YURI ILYINSKY, Head of Department of Navy, yura1001@mail.ru
IGOR MOROZ, Student, ORCID: https://orcid.org/0000-0002-0481-2458, izm0r0s@mail.ru
NIKITA PRIKHODKO, Student, ORCID: https://orcid.org/0000-0001-9905-0187, nikita65612nik@mail.ru
Polytechnic Institute, Far Eastern Federal University
Vladivostok, Russia

Influence of operating factors on the energy efficiency
of axial partial microturbines of the marine vessel

Abstract: Based on literature review, an attempt is made to identify the regime factors that have the most significant effect on the efficiency of turbines. According to the authors, these factors should be taken into consideration to increase the energy efficiency of vessel’s microturbines that are a part of onboard power plant. Such microturbines are also used in other technology areas, but they have strict limitations due to weight and size indicators, and also to the flow rate of the working fluid.

As a result, the following factors with the most considerable impact on the energy efficiency are determined: ratio of the braking pressure at the nozzle inlet to the static pressure at the stage outlet; ratio of the circumferential speed of the impeller to the speed of sound in the critical section of the nozzle, etc. Given the factors listed in this article, it is possible to significantly improve the efficiency of the axial partial microturbine of the marine vessel.

Keywords: regime factors, turbines, microturbine, energy efficiency, marine power plant, independent parameters, working fluid

Contribution of the authors: the authors contributed equally to this article.
The authors declare no conflicts of interests.

See the reference in English at the end of the article