JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN
Online ISSN : 1884-4758
Print ISSN : 0388-3051
ISSN-L : 0388-3051
Thermodynamic Evaluation of “Fukae-maru” Propulsion Plant
2nd Report, Emergency Electric Propulsion System
Hideaki SugitaTakeshi NakazawaHiroki YoshidaNoboru Nakai
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1990 Volume 25 Issue 5 Pages 326-330

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Abstract

Following the 1st. report of the main diesel engine system, the results of the performance evaluation of the emergency electric propulsion system on“Fukae-maru”are descibed in this paper. This system consists of the 200kW differential drive shaft generator-motor, the hydraulic system to drive the armature, and their attachments.
Experiments have been made varing propeller pich angle and varing the direction of armature rotation on calm sea. In the analysis, the entire plant is assumed to be a steady-flow system, and both the first-and the second-law of thermodynamics are employed in order to clarify not only the quantity of energy but also the quality of energy.
In consequence of these analyses, it becomes clear that the method of this analysis is effective to evaluate the performance of the plant which has the several forms of energy like in this plant. And, the Sankey diagrams (energy-flow diagrams) and the exergy efficiencies of this plant are also obtained.

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