Waste Heat Recovery in a Cruise Vessel in the Baltic Sea by Using an Organic Rankine Cycle: A Case Study

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MARC

Ahlgren, Fredrik,1980-Linnaeus University,Linnéuniversitetet,Sjöfartshögskolan (SJÖ) (author)

Waste Heat Recovery in a Cruise Vessel in the Baltic Sea by Using an Organic Rankine Cycle : A Case Study

Article/chapterEnglish2016

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ASME Press,2016
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LIBRIS-ID:oai:DiVA.org:lnu-45750
https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-45750URI
https://doi.org/10.1115/1.4031145DOI
https://lup.lub.lu.se/record/7756629URI

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Language:English
Summary in:English

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

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Maritime transportation is a significant contributor to SOx,NOx, and particle matter (PM) emissions, and to a lesser extent, of CO2. Recently, new regulations are being enforced in special geographical areas to limit the amount of emissions from the ships. This fact, together with the high fuel prices, is driving the marine industry toward the improvement of the energy efficiency of ships. Although more sophisticated and complex engine designs can improve significantly of the energy systems on ships, waste heat recovery arises as the most effective technique for the reduction of the energy consump- tion. In this sense, it is estimated that around 50% of the total energy from the fuel con- sumed in a ship is wasted and rejected through liquid and gas streams. The primary heat sources for waste heat recovery are the engine exhaust and coolant. In this work, we present a study on the integration of an organic Rankine cycle (ORC) in an existing ship, for the recovery of the main and auxiliary engines (AE) exhaust heat. Experimental data from the engines on the cruise ship M/S Birka Stockholm were logged during a port-to- port cruise from Stockholm to Mariehamn, over a period of 4 weeks. The ship has four main engines (ME) W€artsil€ a 5850kW for propulsion, and four AE 2760kW which areused for electrical generation. Six engine load conditions were identified depending on the ship’s speed. The speed range from 12 to 14 kn was considered as the design condi- tion for the ORC, as it was present during more than 34% of the time. In this study, the average values of the engines exhaust temperatures and mass flow rates, for each load case, were used as inputs for a model of an ORC. The main parameters of the ORC, including working fluid and turbine configuration, were optimized based on the criteria of maximum net power output and compactness of the installation components. Results from the study showed that an ORC with internal regeneration using benzene as working fluid would yield the greatest average net power output over the operating time. For this situation, the power production of the ORC would represent about 22% of the total elec- tricity consumption on board. These data confirmed the ORC as a feasible and promisingtechnology for the reduction of fuel consumption and CO2 emissions of existing ships.

Subject headings and genre

TEKNIK OCH TEKNOLOGIER Naturresursteknik Marin teknik hsv//swe
ENGINEERING AND TECHNOLOGY Environmental Engineering Marine Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Maskinteknik Energiteknik hsv//swe
ENGINEERING AND TECHNOLOGY Mechanical Engineering Energy Engineering hsv//eng
waste heat recovery
whr
shipping
organic rankine cycle
orc
energy
Sjöfartsvetenskap
Maritime Science
Baltic Sea
ship
waste heat recovery
organic Rankine cycle

Added entries (persons, corporate bodies, meetings, titles ...)

Mondejar, MariaLund University,Lunds universitet,Kraftverksteknik,Institutionen för energivetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Thermal Power Engineering,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ener-mmr (author)
Genrup, MagnusLund University,Lunds universitet,Kraftverksteknik,Institutionen för energivetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Thermal Power Engineering,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH,Lund University, Sweden(Swepub:lu)vok-mge (author)
Thern, MarcusLund University,Lunds universitet,Kraftverksteknik,Institutionen för energivetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Thermal Power Engineering,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH,Lund University, Sweden(Swepub:lu)vok-mth (author)
LinnéuniversitetetSjöfartshögskolan (SJÖ) (creator_code:org_t)

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