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Open AccessArticle

Thermodynamic Analysis of a Ship Power Plant Operating with Waste Heat Recovery through Combined Heat and Power Production

by 1,2,*, 3,† and 4,†
1
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split, Rudjera Boškovića 32, 21000 Split, Croatia
2
GM TURBO d.o.o., Vukovarska 58, 21000 Split, Croatia
3
Faculty of Engineering, University of Rijeka, Vukovarska 58, 51000 Rijeka, Croatia
4
Faculty of Maritime Studies, University of Split, Zrinsko-Frankopanska 38, 21000 Split, Croatia
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Energies 2014, 7(11), 7368-7394; https://doi.org/10.3390/en7117368
Received: 27 August 2014 / Revised: 28 October 2014 / Accepted: 30 October 2014 / Published: 14 November 2014
(This article belongs to the Special Issue Organic Rankine Cycle (ORC))
The goal of this research is to study a cogeneration plant for combined heat & power (CHP) production that utilises the low-temperature waste energy in the power plant of a Suezmax-size oil tanker for all heating and electricity requirements during navigation. After considering various configurations, a standard propulsion engine operating at maximum efficiency and a CHP Plant with R245fa fluid using a supercritical organic Rankine cycle (ORC) is selected. All the ship heat requirements can be covered by energy of organic fluid after expansion in the turbine, except feeder-booster heating. Hence, an additional quantity of working fluid may be heated using an after Heat Recovery Steam Generator (HRSG) directed to the feeder-booster module. An analysis of the obtained results shows that the steam turbine plant does not yield significant fuel savings. However, a CHP plant with R245fa fluid using supercritical ORC meets all of the demands for electrical energy and heat while burning only a small amount of additional fuel in HRSG at the main engine off-design operation. View Full-Text
Keywords: ship power plant; waste heat recovery; combined heat and power production; Rankine cycle; organic fluid ship power plant; waste heat recovery; combined heat and power production; Rankine cycle; organic fluid
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Grljušić, M.; Medica, V.; Račić, N. Thermodynamic Analysis of a Ship Power Plant Operating with Waste Heat Recovery through Combined Heat and Power Production. Energies 2014, 7, 7368-7394.

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