The subject of this paper is the design and operational characteristics of a 43,000-shp combined gas turbine and steam turbine marine powerplant, known as COGAS. Based upon the “second generation technology” FT4C-2 marine gas turbine, the combined cycle fuel rate is 0.363 lb/shp-hr which represents a thermal efficiency of 41 percent. It is the intent of this paper to show that this low fuel rate design can be achieved with simplicity, operational flexibility, and minimum environmental effect.
A design for a 26 000-shp standardized coal-fired steam turbine propulsion plant using product work breakdown structure (PWBS) or group technology techniques was developed for the Maritime Administration. The purpose of the design was to provide a design package for a production approach which could reduce machinery outfitting cost and time by one third. Emphasis was placed on piping within the main machinery space. In the concept and preliminary design phases, the machinery box was developed to fit within the hull lines of an 80 000, 144 000, and 180 000-dwt collier. Propeller size, shaft line, and rpm were defined; the steam cycle was selected; and initial machinery arrangements were developed for both a dual boiler and a single boiler plant. During contract design, machinery specifications, schematic diagrams, arrangements, and procurement specifications were developed. In production design, standards were developed, schematic diagrams were revised, and piping diagrammatic arrangements, composites, material lists, and purchase orders for components were prepared. A production philosophy and build strategy also were developed. This effort made use of the PWBS approach presented in the MarAd National Shipbuilding Research Program reports[1–5]3
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.