The environmental performance of a fossil-free ship propulsion system with onboard carbon capture – a life cycle assessment of the HyMethShip concept

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Malmgren, Elin,1992Department of Mechanics and Maritime Sciences;Maritime Environmental Science;Chalmers University of Technology;SE-412 96 Göteborg;Sweden,Chalmers tekniska högskola,Chalmers University of Technology (author)

The environmental performance of a fossil-free ship propulsion system with onboard carbon capture – a life cycle assessment of the HyMethShip concept

Article/chapterEnglish2021

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2021
Royal Society of Chemistry (RSC),2021
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LIBRIS-ID:oai:DiVA.org:ivl-3826
https://urn.kb.se/resolve?urn=urn:nbn:se:ivl:diva-3826URI
https://doi.org/10.1039/d1se00105aDOI
https://research.chalmers.se/publication/524139URI

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Language:English
Summary in:English

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Subject category:art swepub-publicationtype

Notes

A2552
The climate impact caused by the shipping industry has increased over the past decades despite attempts toimprove the energy efficiency of vessels and lower induced emissions. A tool in reducing climate and otherenvironmental impacts is new low emissions propulsion technologies. These new technologies need toreduce harmful emissions not only in the tailpipe but also over the entire life cycle. This study uses lifecycle assessment to investigate the life cycle environmental impact of a propulsion concept currentlyunder development: the HyMethShip concept. The HyMethShip concept combines electro-methanolenergy storage, an onboard pre-combustion carbon capture system, and a dual fuel internal combustionengine. The concept aims for an almost closed CO2 loop by installing CO2 capture onboard.The CO2 isunloaded in port and converted into electro-methanol which is used to fuel the ship again. This is madepossible by a pre-combustion process converting electro-methanol to hydrogen and CO2. Theassessment is conducted from well-to-propeller and focuses on ship operation in the North Sea in 2030.The results indicate that this technology could be an alternative to reduce the climate impact fromshipping.The results show a lower impact on acidification, climate change, marine eutrophication,particulate matter, photochemical ozone formation, and terrestrial eutrophication compared to internalcombustion engines run on either marine gas oil (0.1% sulphur content), biogenic methanol, fossilmethanol, or electro-methanol. Electricity with low climate and environmental impact is likely requiredto achieve this, and low NOx emissions from combustion processes need to be maintained. A potentialtrade-off is higher toxicity impacts from the HyMethShip concept compared to most other options, dueto metal needs in wind power plants.

Subject headings and genre

TEKNIK OCH TEKNOLOGIER Maskinteknik Energiteknik hsv//swe
ENGINEERING AND TECHNOLOGY Mechanical Engineering Energy Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Naturresursteknik Annan naturresursteknik hsv//swe
ENGINEERING AND TECHNOLOGY Environmental Engineering Other Environmental Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Naturresursteknik Miljöledning hsv//swe
ENGINEERING AND TECHNOLOGY Environmental Engineering Environmental Management hsv//eng
TEKNIK OCH TEKNOLOGIER Naturresursteknik Energisystem hsv//swe
ENGINEERING AND TECHNOLOGY Environmental Engineering Energy Systems hsv//eng
Energy Engineering and Power Technology
Fuel Technology
Renewable Energy
Sustainability and the Environment
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Brynolf, Selma,1984Department of Mechanics and Maritime Sciences;Maritime Environmental Science;Chalmers University of Technology;SE-412 96 Göteborg;Sweden,Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)selmab (author)
Fridell, ErikDepartment of Mechanics and Maritime Sciences;Maritime Environmental Science;Chalmers University of Technology;SE-412 96 Göteborg;Sweden,IVL Svenska Miljöinstitutet AB,IVL Swedish Environmental Research Institute,Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)fridell (author)
Grahn, Maria,1963Department of Mechanics and Maritime Sciences;Maritime Environmental Science;Chalmers University of Technology;SE-412 96 Göteborg;Sweden,Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)np97magr (author)
Andersson, Karin,1952Department of Mechanics and Maritime Sciences;Maritime Environmental Science;Chalmers University of Technology;SE-412 96 Göteborg;Sweden,Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)karina (author)
Department of Mechanics and Maritime Sciences;Maritime Environmental Science;Chalmers University of Technology;SE-412 96 Göteborg;SwedenChalmers tekniska högskola (creator_code:org_t)

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In:Sustainable Energy & Fuels: Royal Society of Chemistry (RSC)5:10, s. 2753-27702398-4902

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