A1 Journal article (refereed), original research

Numerical analysis on utilizing excess steam for electricity production in cruise ships


Open Access publication

Publication Details
Authors: Uusitalo Antti, Nerg Janne, Grönman Aki, Nikkanen Samuli, Elg Mia
Publisher: Elsevier
Publication year: 2019
Language: English
Related Journal or Series Information: Journal of Cleaner Production
Journal acronym: JCP
Volume number: 209
Start page: 424
End page: 438
Number of pages: 15
ISSN: 0959-6526
eISSN: 1879-1786
JUFO-Level of this publication: 2
Open Access: Open Access publication
Location of the parallel saved publication: URN:NBN:fi-fe201903138716

Abstract

Marine sector has a signi cant contribution to the global greenhouse gas emissions and energy usage. Despite that the energy eciency of ship engines has been increased drastically and the usage of new type of fuels such as LNG has reduced the emissions, signi cant improvements in the energy eciency of ship energy systemscould be still achieved by the more eective usage of dierent heat streams. In this study, the potential for producing electric power from excess steam of large cruise ships is investigated. The analysis is carried out for annual operational pro les of case cruise ships and the excess steam utilization is studied by means of 0.5 MW to 2 MW scale steam turbine system and a combination of steam turbine and low temperature ORC system. A notable potential in utilizing the excess steam into electricity production was identi ed. It was observed that due to the high variations in the ship operation, the steam turbine design power and o-design performance have a signi cant impact on the electrical energy production. In the studied case cruise ships, steam turbine having a low condensing temperature or a combination of steam turbine and low temperature ORC reached the highest annual electric energy production potential, ranging from 3920 MWh/a to 5310 MWh/a.


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Last updated on 2020-20-03 at 10:03