000010629 001__ 10629
000010629 005__ 20240531171548.0
000010629 0247_ $$2doi$$a10.24868/10629
000010629 245__ $$aZero-staging the Aero-derivative Marine Gas Turbine for a Step-Change Increase in Power Rating.
000010629 269__ $$a2022-09-04
000010629 336__ $$aConference Proceedings
000010629 520__ $$aNavies that sought to upgrade their fleet?s mission capability and increase their on-board load usually resorted to increasing the ship?s propulsive power. When the ship?s prime mover was a gas turbine, this could be done by zero-staging the existing gas turbine compressor. An aero-derivative gas turbine for marine propulsion was a prime candidate for zero-staging because it retained its original attributes of high power-to-weight ratio, compactness, fast start-up, and variable power output. A successful zero-staged compressor gave a step-increase in power with minimal changes to the original inlet while keeping the remainder of the installation intact. As a result, the development costs were relatively less when compared to a new replacement design with a higher power rating. The purpose of this paper is to discuss a zero-staged design method for an aero-derivative marine gas turbine for an improvement in performance and an increase in power output. Here, a sequential approach was taken when carrying out the synthesis, with the completion of each sequence serving as a gate keeper prior to proceeding to the next sequence. This resulted in the formulation of a method that assessed the feasibility of zero staging the gas turbine at the initial design phase by applying basic calculations. The simplicity of the proposed method permitted the sole use of a spreadsheet instead of the established practice of complex numerical analyses with extensive batch data processing on a computer server. The intent was to ensure the viability of the zero-stage design at the preliminary investigative phase in a simplistic manner prior to committing to a fully-fledged design project of significant cost. This approach was used as a case study on an existing medium-size aero-derivative gas turbine suitable for marine use, namely the Rolls-Royce Trent 60 Siemens SGT-A65 gas turbine. Zero-staging gave a 17% increase in power output, from 77,000 shp to 90,000 shp.
000010629 542__ $$fCC-BY
000010629 6531_ $$aMarine propulsion
000010629 6531_ $$aGas turbine engine
000010629 6531_ $$aPower uprate
000010629 6531_ $$aZero-staging
000010629 7001_ $$aPortanier, R$$uUniversity of Plymouth MLA College
000010629 773__ $$tConference Proceedings of INEC
000010629 773__ $$jINEC 2022
000010629 85641 $$uhttps://www.imarest.org/events/category/categories/imarest-event/international-naval-engineering-conference-and-exhibition-2022$$yConference website
000010629 8564_ $$9282ec19c-9694-48b1-9f92-9d0218546edb$$s1854976$$uhttps://library.imarest.org/record/10629/files/INEC_2022_paper_56.pdf
000010629 980__ $$aConference Proceedings