Marine gas turbine for efficient  ship propulsion

Niculescu, Filip; Borzea, Claudia; Vasile, M.

doi:10.37410/emerg.2020.3.08

Cited by 4 publications

(2 citation statements)

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“…The performances and characteristics of aero-derivative engine ST40 were analyzed and compared with the Tyne RM1C engine, in order to ensure a proper fitting and to establish whether additional benefits such as increased propulsion efficiency and reduced weight are brought by this change [22]. Following the dismounting of the Tyne engine and the ducting connected to it, the engine compartment was studied to determine the maximum dimensions in which the new ducting could fit.…”

Section: Geometry Definitionmentioning

confidence: 99%

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Experimental Validation of a Multi-Purpose Exhaust System Designed for a Naval Propulsion Group

Dumitrescu

Drãgan

Gherman

et al. 2023

JMSE

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This paper describes the effort of designing an unconventional exhaust manifold for a marine gas turbine engine, with an integrated passive ventilation port for cooling the engine housing. The study is part of a larger program to substitute the propulsion gas turbines for the T22R defense frigate and make the proper aerodynamic adaptations. The system in question is unique, in the sense that it uses the exhaust gas momentum to entrain outside air and ventilate the engine enclosure. In achieving this, RANS computation was used to test various concepts and dimensions for the ventilation system. Based on these analyses, the design that provided adequate air circulation with minimum pressure losses was chosen and the parts were integrated in the overall assembly. The experimental campaign performed on the entire aero-package showed good synergies of the ventilation system with the other adaptations and the engine itself. Performance was evaluated with pressure and temperature probes distributed around the aero-package and were found to be within 3.5% of the data predicted by CFD. This brings further studies closer to a technology readiness level vital for insitu testing on board the ship itself.

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Section: Geometry Definitionmentioning

confidence: 99%

“…The revamping process of an ST40M engine for a T22 frigate was presented by Niculescu et al [22], where a new mechanical adaptation was developed. It shows the installation solution for the new engine, which has the gearbox located at the cold end of the engine, as opposed to the old engine, which had it at the turbine side.…”

Section: Introductionmentioning

confidence: 99%

Experimental Validation of a Multi-Purpose Exhaust System Designed for a Naval Propulsion Group

Dumitrescu

Drãgan

Gherman

et al. 2023

JMSE

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Considerations regarding the anti-icing system for the ship propulsion plant with gas turbine

et al. 2021

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Vessels that have navigation routes in areas with ambient temperatures that can drop below + 5 [°C], with a relative humidity of over 65%, will have implemented technical solutions for monitoring and combating ice accumulations in the intake routes of gas turbine power plants. Because gas turbines are not designed and built to allow the admission of foreign objects (in this case - ice), it is necessary to avoid the accumulation of ice through anti-icing systems and not to melt ice through defrost systems. Naval anti-icing systems may have as a source of energy flow compressed air, supersaturated steam, exhaust gases, electricity or a combination of those listed. The monitoring and optimization of the operation of the anti-icing system gives the gas turbine power plant an operation as close as possible to the normal regimes stipulated in the ship's construction or retrofit specification.

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