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Energy and exergy analysis of a cruise ship

Baldi, Francesco; Ahlgren, Fredrik; Nguyen, Tuong Van; Thern, Marcus LU and Andersson, Karin (2018) In Energies 11(10).
Abstract

In recent years, the International Maritime Organization agreed on aiming to reduce shipping's greenhouse gas emissions by 50% with respect to 2009 levels. Meanwhile, cruise ship tourism is growing at a fast pace, making the challenge of achieving this goal even harder. The complexity of the energy system of these ships makes them of particular interest from an energy systems perspective. To illustrate this, we analyzed the energy and exergy flow rates of a cruise ship sailing in the Baltic Sea based on measurements from one year of the ship's operations. The energy analysis allows identifying propulsion as the main energy user (46% of the total) followed by heat (27%) and electric power (27%) generation; the exergy analysis allowed... (More)

In recent years, the International Maritime Organization agreed on aiming to reduce shipping's greenhouse gas emissions by 50% with respect to 2009 levels. Meanwhile, cruise ship tourism is growing at a fast pace, making the challenge of achieving this goal even harder. The complexity of the energy system of these ships makes them of particular interest from an energy systems perspective. To illustrate this, we analyzed the energy and exergy flow rates of a cruise ship sailing in the Baltic Sea based on measurements from one year of the ship's operations. The energy analysis allows identifying propulsion as the main energy user (46% of the total) followed by heat (27%) and electric power (27%) generation; the exergy analysis allowed instead identifying the main inefficiencies of the system: while exergy is primarily destroyed in all processes involving combustion (76% of the total), the other main causes of exergy destruction are the turbochargers, the heat recovery steam generators, the steam heaters, the preheater in the accommodation heating systems, the sea water coolers, and the electric generators; the main exergy losses take place in the exhaust gas of the engines not equipped with heat recovery devices. The application of clustering of the ship's operations based on the concept of typical operational days suggests that the use of five typical days provides a good approximation of the yearly ship's operations and can hence be used for the design and optimization of the energy systems of the ship.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Energy analysis, Energy efficiency, Exergy analysis, Low carbon shipping
in
Energies
volume
11
issue
10
publisher
MDPI AG
external identifiers
  • scopus:85056120676
ISSN
1996-1073
DOI
10.3390/en11102508
language
English
LU publication?
yes
id
a5d171ec-6706-4399-b5c4-9aae09a7677d
date added to LUP
2018-11-22 14:09:03
date last changed
2019-02-20 11:37:22
@article{a5d171ec-6706-4399-b5c4-9aae09a7677d,
  abstract     = {<p>In recent years, the International Maritime Organization agreed on aiming to reduce shipping's greenhouse gas emissions by 50% with respect to 2009 levels. Meanwhile, cruise ship tourism is growing at a fast pace, making the challenge of achieving this goal even harder. The complexity of the energy system of these ships makes them of particular interest from an energy systems perspective. To illustrate this, we analyzed the energy and exergy flow rates of a cruise ship sailing in the Baltic Sea based on measurements from one year of the ship's operations. The energy analysis allows identifying propulsion as the main energy user (46% of the total) followed by heat (27%) and electric power (27%) generation; the exergy analysis allowed instead identifying the main inefficiencies of the system: while exergy is primarily destroyed in all processes involving combustion (76% of the total), the other main causes of exergy destruction are the turbochargers, the heat recovery steam generators, the steam heaters, the preheater in the accommodation heating systems, the sea water coolers, and the electric generators; the main exergy losses take place in the exhaust gas of the engines not equipped with heat recovery devices. The application of clustering of the ship's operations based on the concept of typical operational days suggests that the use of five typical days provides a good approximation of the yearly ship's operations and can hence be used for the design and optimization of the energy systems of the ship.</p>},
  articleno    = {2508},
  author       = {Baldi, Francesco and Ahlgren, Fredrik and Nguyen, Tuong Van and Thern, Marcus and Andersson, Karin},
  issn         = {1996-1073},
  keyword      = {Energy analysis,Energy efficiency,Exergy analysis,Low carbon shipping},
  language     = {eng},
  month        = {09},
  number       = {10},
  publisher    = {MDPI AG},
  series       = {Energies},
  title        = {Energy and exergy analysis of a cruise ship},
  url          = {http://dx.doi.org/10.3390/en11102508},
  volume       = {11},
  year         = {2018},
}