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Dissertations / Theses on the topic 'Marine fuels'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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1

Anastasakis, Konstantinos. "The potential of the production of fuels and chemicals from marine biomass." Thesis, University of Leeds, 2011. http://etheses.whiterose.ac.uk/4167/.

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The need for sustainability, energy security and reduction of global warming has brought many alternative energy sources into the foreground. Already there are well established technologies that can produce renewable energy but when it comes to the production of renewable liquid fuels and chemicals, biomass is the primary feedstock. Biomass is a renewable source of energy that can provide heat, electricity and transport fuels. However, utilisation of biomass posses some limitations such as land availability and competition of energy crops with food crops. In order to overcome these problems "t

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2

Lock, Lillie Marlén. "Future fuel for worldwide tankershipping in spot market." Thesis, KTH, Marina system, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-121509.

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Ship exhausts contain high levels of sulphur oxides, nitrogen oxides, carbon dioxide and particles dueto the heavy fuel oil, HFO, used for combustion and the combustion characteristics of the engine.As a result of upcoming stricter regulations for shipping pollution, as well as growing attentionto greenhouse gas emissions, air pollution and uncertainty of future petroleum oil supply, a shifttowards a cleaner burning fuel is needed.This work explores potential alternative fuels, both conventional and unconventional, and abatementtechnologies, to be used by tankers in the worldwide spot market t

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3

Ushakov, Sergey. "Particulate matter emission characteristics from diesel engines operating on conventional and alternative marine fuels." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-20042.

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The awareness of adverse health effects associated with diesel aerosol emissions has generated a great public and academic interest in studying various aerosol-producing sources. While automotive industry has achieved significant progress in controlling and reducing particulate matter (PM) emissions, there was only a very limited attention paid to ship transport, i.e. to marine diesel engines (MDE). Nowadays, shipping is one of the biggest contributors of PM emissions to the atmosphere, although is still lacking attention from PM legislators and diesels aerosol researchers. This thesis is focu

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4

Houda, Sara. "Oxidative desulfurization of marine fuels : optimization of reaction conditions and development of efficient catalysts." Thesis, Lille 1, 2019. http://www.theses.fr/2019LIL1R064.

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L'Organisation Maritime Internationale (OMI) a limité la teneur en soufre des combustibles marins dans les zones de contrôle des émissions de soufre (zones SECA) de 1 à 0,1 % en 2015 et la limitera, d’ici 2020, de 3,5 à 0,5 % dans toutes les zones maritimes. Les fiouls marins sont constitués des résidus lourds caractérisés par une teneur élevée en soufre, la majeure partie du soufre se trouvant dans des molécules dites réfractaires, très difficiles à éliminer par le procédé d'hydrodésulfuration existant, fonctionnant sous haute pression d’hydrogène. Cependant, ces molécules soufrées sont connu

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5

Clague, Nicholas Paul. "Determination of the core structure of overbased calixarenes used as detergent additives in marine fuels." Thesis, University of Hull, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310215.

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6

Jawara, Lamin. "Prediction of DI-CI Engine Performance and Emission Characteristics of Varying Renewable Diesel Fuels with Experimental Results from Marine Diesel fuel." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-16234.

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This paper discusses finding of combustion research carried out using Ricardo hydra research diesel engine with varying renewable fuels. The primary fuel of investigation is rapeseed methyl ester (RME) and marine diesel fuel (MDO) was used as the primary reference fuel (PRF). The results of the PRF have been acquired by experiment and have been used to characterize the heat release rates, brake fuel conversion efficiency (BFCE), brake specific fuel consumption (BSFC), brake fuel energy consumption (BSEC), exhaust temperature; Oxides of nitrogen (NOx), carbon monoxide (CO), carbon dioxide (CO2)

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7

Worren, Henrik. "Technical solutions regarding impementation of the EU directive 2005/33/EC concerning sulphur content of marine fuels." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11630.

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The objective of this diploma thesis is to assess the technical and operational challenges EU Directive 2005/33/EC will introduce. This is done using fundamental knowledge about naval architecture and marine diesel engines. Experiences on 0,1 % sulphur fuel in the maritime industry is limited, established standards and practices are few and is now being developed. EU Directive 2005/33/EC is dictating vessels to use fuel with a maximum sulphur content of 0,1 % while in EU port. MGO (type DMA) is the only fuel available with a sulphur content below 0,1 %. Vessels managed by WSMN are calling an E

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8

Mayakoti, Amukta. "Characterization of Fresh Water Microalgae from East Tennessee for Biodiesel Production." Digital Commons @ East Tennessee State University, 2012. https://dc.etsu.edu/etd/1426.

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There is an increasing need for renewable energy sources to replace fossils fuels which accumulate harmful byproducts in the environment. Biodiesel emits less gaseous pollutants than diesel. There are various sources for biodiesel but they are unable to meet the existing demands for fuel. Microalgae are a promising source for biodiesel because of its relatively faster growth rate, availability, and lipid content. Microalgae (JC and BT) growing in local water bodies were collected, selected on section media containing antibiotics, and used for characterizations. Experiments were conducted to st

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9

Filho, Gilberto Dória do Valle. "Avaliação das instalações de máquinas em navios visando redução do uso de combustível fóssil." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/3/3135/tde-11082011-131221/.

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Este trabalho trata da questão da redução de consumo de combustível fóssil em instalações de máquinas de navios. É um tema de grande interesse no momento, devido ao alto custo operacional e à emissão de poluentes decorrentes do processo da combustão desses derivados de petróleo. Apresenta-se, inicialmente o cenário atual e tendências futuras das instalações propulsoras convencionais que usam óleo pesado ou Diesel. Em seguida, são examinadas alternativas propostas para redução de consumo de combustíveis fósseis nos navios, que são enquadradas em três categorias. A primeira delas envolve possíve

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10

Delashob, Hemen, and Björn Elmström. "Liquified Natural Gas Marine Fuel : Naturally Occuring Radioactive Material." Thesis, Linnéuniversitetet, Sjöfartshögskolan (SJÖ), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-84206.

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There seems to be enough information available on how different types of radiation may affect human health. There also seems to be adequate research made about NORM and how to handle this phenomenon. The image put forth by this study shows that the appearance of NORM within affected industries do not appear surprising or difficult to deal with. On the contrary it seems to be a well-known issue and safety measures have been adapted accordingly. It appears as if these issues have been overlooked regarding the systems where LNG is being used as a marine fuel. There is not enough data to conclude

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11

Blackert, Erik. "Total Cost of Ownership For a Marine Fuel System." Thesis, KTH, Marina system, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-290162.

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The modern marine fuel system have a vital part in preparing the fuel before it can enter theengines. Hard particles and water are removed and the viscosity needs to meet limitationsof the engines, to prevent damage. The cost for operating the fuel system and wear on theengine varies depending on how the fuel system are operated and on surrounding parameters.This thesis explains the cost impact of di erent parameters on the total cost for operating afuel system and aims to create a total cost of ownership model that also considers the costsfor systems connected to the fuel system.The total cos

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12

Gustafsson, Filip. "Waste heat recovery systems : Fuel energy utilisation for a marine defence platform." Thesis, Blekinge Tekniska Högskola, Institutionen för maskinteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-19681.

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This report is a thesis for BTH in collaboration with the company Saab Kockums AB. In order to meet future environmental and economical demands, a vessel must reduce its fuel consumption to have a smaller climate impact and save money. Waste heat recovery systems (WHRS) captures the thermal energy generated from a process that is not used but dumped into the environment and transfers it back to the system. Thermal energy storage (TES) is the method of storing thermal energy which allows heat to be used whenever necessary. Some applications of TES are seasonal storage, where summer heat is stor

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13

Bruun, Kristine. "Bond Graph Modelling of Fuel Cells for Marine Power Plants." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-6559.

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There is a constant search for alternative solutions improving the fuel efficiency and environmental impact of marine power plants. Fuel cells are regarded as a potential future candidate for significantly reducing pollution from such systems. In this thesis a bond graph template for mathematical modelling of fuel cells is developed. To show the applicability of this template, models of a solid oxide fuel cell (SOFC) system are implemented and simulations carried out. The models are intended for analyses of marine power production in overall ship system applications. The models developed in th

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14

Östling, Erik. "Model on degradation of PEM fuel cells in marine applications." Thesis, KTH, Kemiteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-299446.

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Sjöfarten står för 3 % av världens totala växthusgaser och är idag högst beroende av fossila bränslen. Ett alternativ för att gå över till en fossilfri flotta är användning av bränsleceller och vätgas som drivmedel. Om vätgasen produceras från elektrolys med förnyelsebara energikällor så är driften utsläppsfri och koldioxidneutral. Bränsleceller kan användas i många olika sammanhang, men har ännu inte slagit igenom med full kraft. En anledning till detta är livslängden som är för kort. För att sjöfarten ska kunna implementera bränslecellsdrift behöver nedbrytningen av bränslecellen bli vidare

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15

Para, Eric George. "Coastal Sediment and Fish Biosolids Remediation Using a Microbial Fuel Cell." Fogler Library, University of Maine, 2006. http://www.library.umaine.edu/theses/pdf/ParaEG2006.pdf.

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16

Nguyen, Thi Hong Minh, and Van Hanh Vu. "Bioethanol production from marine algae biomass: prospect and troubles." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-99282.

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The increase of petroleum cost as well as global warming and climate change result in investigation to discover new renewable energy resources. Bioenergy is one of the most important sources that is concerning the scientists and industrial sector. Although bioethanol had to be known as one of the most important renewable energy sources in order to reduce greenhouse gases and global warming, there is a limited number of publications reporting on them. In this review, a brief overview is offered about bioethanol production from algae. It can be given a deeper insight in dificulties and promising

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17

Bassam, Ameen. "Use of voyage simulation to investigate hybrid fuel cell systems for marine propulsion." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/412705/.

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The design of green ships has received significant attention with the goal of reducing the negative environmental impacts of shipping and to comply with the more stringent environmental regulations. Therefore, in 2009 the International Maritime Organisation (IMO) published the Energy Efficiency Design Index (EEDI) measures to be adopted by new ships to reduce the Greenhouse Gases (GHG). Hybrid electric power and propulsion is one of the EEDI measures and fuel cell technologies are considered as a candidate to be used due to their high efficiency, lower emissions, lower maintenance, and quiet o

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18

Lebo, Stephen J. Scott Robert M. "Lease vs. Purchase analysis of alternative fuel vehicles in the United States Marine Corps." Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Dec/09Dec%5FLebo_Scott.pdf.

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Thesis (M.S. in Management)--Naval Postgraduate School, December 2009.<br>Thesis Advisor: Gates, William R. Second Reader: Summers, Donald E. "December 2009." Description based on title screen as viewed on January 26, 2010. Author(s) subject terms: lease, purchase, Alternative-fuel Vehicle (AFV), incremental costs, salvage values, General Services Administration (GSA), United States Marine Corps (USMC), light-duty vehicle. Includes bibliographical references (p. 61-63). Also available in print.

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Scott, Robert M. "Lease vs. Purchase analysis of alternative fuel vehicles in the United States Marine Corps." Thesis, Monterey, California. Naval Postgraduate School, 2009. http://hdl.handle.net/10945/4505.

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Approved for public release, distribution unlimited<br>e what the USMC's optimal acquisition decision should be (lease or purchase) given potential changes in purchasing patterns over time. This analysis will afford decision makers the ability to make strategic financial decisions based on anticipated changes in the size of the USMC's Garrison Mobile Equipment fleet, as well as anticipated changes in market conditions regarding vehicle purchase prices, incremental costs, and salvage values. To answer these questions, this thesis will analyze historical data (2004 to 2009) for the largest popul

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20

Schendler, Phillip J. "Costs and benefits of using fuel cells for stationary power generation at Marine Corps Logistics Base Barstow Maintenance Center." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02Dec%5FSchendler.pdf.

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Thesis (M.S. in Management)--Naval Postgraduate School, December 2002.<br>Thesis advisor(s): William R. Gates, David R. Henderson. Includes bibliographical references (p. 73-76). Also available online.

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21

Landet, Ragnar Dystvold. "PM emissions and NOx-reduction due to water in fuel emulsions in marine diesel engines." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11590.

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The goal of this M.Sc. thesis has been to study the NOx-reduction measure: water in fuel emulsion. There has been done a literature study to look into the function, system components and effect upon NOx reduction, specific fuel oil consumption and other emissions. The operational aspects of water in fuel emulsion have been looked into. It has been found that running on water in fuel emulsion does not have many operational problems. However there is a need for having a "fail safe" system that can shut down the water supply if the engine has a failure and if the dosage system fails to give the r

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22

Tse, Lawrence K. C. "Detailed study of integrating solid oxide fuel cell-gas turbine hybrid system for marine applications." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/11753.

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This thesis presents the computational evaluation of the system configuration and optimisation of a recuperated SOFC-GT system with combined heating cooling and power (CCHP) or trigeneration for marine applications. A comprehensive configuration analysis of a SOFC-GT system is needed to characterise the performance of different system configuration across a range of operating conditions, in order to choose a design point with optimum performance, and carry out off-design analysis. Then, a sensitivity analysis of the effects of changing the components, ambient temperature and air utilisation an

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23

Jakobsson, Niklas, and Peter Rydholm. "Ecodriving - hot eller möjlighet : En kvalitativ studie om intresset för ecodriving till sjöss." Thesis, Linnéuniversitetet, Sjöfartshögskolan (SJÖ), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-64025.

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Det finns ekonomiska, säkerhetsmässiga och miljömässiga vinster att göra genom att tillämpa ecodriving. Tidigare forskning pekar på att transportslagen bilar, tåg och flyg har gjort stora besparingar i ekonomiskt och miljömässigt hänseende, men hur ser det ut inom sjöfarten? Med denna frågeställning som bakgrund är syftet med studien att studera intresset för ecodriving bland svenska rederier och svenska myndigheter med en fartygsflotta. Dataunderlaget för studien utgörs av material från kvalitativa intervjuer med personer i exekutiv position. Resultatet av studien visar på att de flesta verks

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24

Viado, Harold A. "An optimization model for sea-based supply of bulk fuel for a deployed marine expeditionary unit." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA365435.

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25

Skahen, Stephen "Jack", Michael Brookhart, Michael Boyett, Steven Benner, josue Kure, and Jason Maier. "Exploring the reduction of fuel consumption for ship-to-shore connectors of the Marine Expeditionary Brigade." Thesis, Monterey, California: Naval Postgraduate School, 2013. http://hdl.handle.net/10945/39005.

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Approved for public release; distribution is unlimited.<br>At the beginning of the 21st century, the United States Marine Corps (USMC) took a leading role in the war on terror. The traditionally amphibious force deployed massive amounts of troops and supplies in two major land wars of occupation. Now, as the USMC winds down its participation in the conflicts, it must seek to return to its roots as a primarily amphibious force without the benefits of a land-based operation. Tomorrows battles will likely begin from the littorals in and around the coastal regions of the developing world. The Mari

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26

Olander, Petra. "Tribology for Greener Combustion Engines : Scuffing in Marine Engines and a Lubricating Boric Acid Fuel Additive." Doctoral thesis, Uppsala universitet, Tillämpad materialvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-333430.

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This thesis aims at increased knowledge in two fields of tribological research; both related to making currently used combustion engines greener. The first field regards the possibilities of using a boric acid fuel additive to increase fuel efficiency. The second field is about the severe wear phenomenon scuffing, which can become problematic when cargo ships are operated on low-sulphur fuel to reduce sulphuric emissions. Tribological tests were developed and performed to simulate the applications. Advanced surface analysis was performed to understand changes occurring on the outermost surface

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27

Ryste, Julianne Mari. "Screening LCA of GHG emissions related to LNG as ship fuel." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18643.

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In view of the increasingly popular climate change debate worldwide, maritime transport is under pressure to create sustainable solutions for a cleaner future.One of these solutions is using liquefied natural gas (LNG) as ship fuel. LNG has a higher hydrogen-to-carbon ratio compared with oil-based fuels, which results in lower specific CO2 emissions (kg CO2/kg fuel). Other benefits of LNG are the total elimination of SOx emissions and particulate matter, and 85-90 % reductions in NOx emissions. DNV has estimated a net global warming benefit of 15 % with the use of LNG. However there is still a

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James, Kris. "The design and performance of a civil marine reactor with regard to the thermal performance of the fuel." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/18067/.

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There is a concerted world wide effort to limit greenhouse gases into the atmosphere. Civil shipping accounts for a 3 % proportion of greenhouse gas emissions and to combat this problem, nuclear power is proposed as an alternative energy source. This thesis set out to evaluate the use of a civil marine nuclear reactor for commercial shipping purposes. A review was carried out to determine past uses of civil marine nuclear reactors to assist specification of the criteria for a civil ship reactor e.g. reactor type, operating conditions. The refuelling period of such ships was understood as an is

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29

Stacey, Bruce M. "The chronic effect of no. 2 fuel oil on the population dynamics of Harpacticoid copepods in experimental marine mesocosms /." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63374.

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Marin, Radovan [Verfasser]. "The influence of engine and vehicle constructions to fuel consumption and air pollution / Radovan Marin." München : GRIN Verlag, 2020. http://d-nb.info/1209545497/34.

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Du, Toit Maria Hendrina. "Introducing advanced thorium-based fuel cycles in SA : an evolutionary approach / Maria Hendrina (Marina) du Toit." Thesis, North-West University, 2013. http://hdl.handle.net/10394/8734.

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Past experience in several thorium fuelled research- and power reactors provides the basis and history of thorium. The material properties, fertile- and fissile isotope properties as well as the decay chain of thorium are discussed for purposes of evaluating thorium as a source of fuel. The different thorium-based fuel designs for PWR cores are discussed and resulting difficulties and solutions are outlined. The different options for each strategy are compared in terms of advantages and disadvantages. A process of elimination selects the best option for each strategy, which results in a combin

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Hillberg, Torbjörn, and Emil Holmberg. "Metanol som marint bränsle : Alkohol som en lösning, inte ett problem." Thesis, Linnéuniversitetet, Sjöfartshögskolan (SJÖ), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-34103.

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Sedan industrialismens start har människan påverkat klimatbalansen genom förbränning av fossila bränslen. Rökgasemissionerna förorsakade av internationell sjöfart kan inte tillskrivas någon särskild nations ansvar på grund av dess globala och komplicerade verksamhet. FN:s sjöfartsorgan IMO har således åtagit sig ansvaret att minska sjöfartens miljöpåverkan. Införandet av nya miljömål har resulterat i strängare globala och nationella regler som tvingar sjöfartsnäringen till omfattande anpassningar under kort tid. Som lösning för att uppfylla kommande krav gällande rökgasemissioner har flertalet

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Holmström, Johnny. "GOVERNOR ELECTRONICS FOR DIESEL ENGINES : High availability platform for real-time control and advanced fuel efficiency algorithms." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-20282.

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Fossil fuel is a rare commodity and the combustion of this fuel results in negative environmental effects. This paper evaluates and validates the electronics needed to run intelligent algorithms to lower the fuel consumption for commercial vessels. This is done by integrating advanced fuel saving functions into an electronic device that controls the fuel injection of large diesel engines, as known as a diesel engine governor. The control system is classified as a safety critical system. This means that the electronics needs to be designed for fail safe operation. To allow for future research a

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Battistelli, Arrigo. "Investigation of a Concept for Simultaneous Reliquefaction of Boil-Off-Gas and Vaporization of LNG for Marine Atmospheric LNG Fuel Tanks." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-25738.

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The aim of this thesis is to design and optimize a heat pump process to reliquefy Boil-Off-Gas from Liquefied Natural Gas (LNG) cryogenic tanks, and simulataneously vaporize LNG at high pressure.The process is meant for use onboard LNG fuelled ship different from LNG carriers, equipped with LNG fuel tanks at atmospheric pressure and 2-strokes engines with high pressure gas injection, which is considered the most efficient propulsion arrangement for medium-large vessels.The studyis based on a patented concept from the norwegian companyLNG New Technlogies, within the thesis this concept is evolv

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Weirich, Timothy Douglas. "Evaluating the Potential for Atmospheric Corrosion of 304 Stainless Steel Used for Dry Storage of Spent Nuclear Fuel." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1557098372186951.

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36

Soufi, Jihène. "Traitement des gaz d’échappement des groupes électrogènes alimentés par des gasoils, fuels marines ou bio-huiles : élimination des HAP en présence ou non de SOx." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1120.

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Andrén, Filip, and Olav Borgström. "Common Rail - En bränslebesparingsstudie : – En utvärdering av ett nyinstallerat bränsleinsprutningssystem på isbrytaren Ymer." Thesis, Linnéuniversitetet, Sjöfartshögskolan (SJÖ), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-50558.

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Följande studie är gjord på uppdrag av Sjöfartsverket. I studien undersöktes hur en installation av ett Common Rail-system ombord på isbrytaren Ymer påverkat bränsleförbrukningen samt utsläppen av kväveoxider. Rådata som loggats ombord på Ymer har analyserat och bearbetat. Material och information från tillverkare, besättning samt teknisk chef på Sjöfartsverket, Albert Hagander har använts under studien. Tillsammans med uppmätta mätdata och tidigare gjord litteraturstudie stöds resultaten i studien. Det är ingen slump att system av Common Rail-typ redan är tillämpat inom de flesta branscher så

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Junior, Antonio Fernandez Prada. "Avaliação da qualidade de ignição para utilização de petróleos pesados e asfálticos como combustíveis marítimos." Universidade do Estado do Rio de Janeiro, 2007. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=7383.

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As correntes pesadas do refino de petróleo podem ser utilizadas para a produção de óleos combustíveis para uso industrial ou marítimo, sendo esse último conhecido como óleo bunker. Para tal, é necessária a diluição dessas correntes pesadas com frações de refino mais leves para ajuste da viscosidade. Enquanto o uso industrial do óleo combustível vem sendo significativamente reduzido em função de restrições ambientais, o mercado de óleo bunker apresenta crescimento importante face a expansão do comércio marítimo mundial. No Brasil, há um aumento da produção de petróleos pesados, extrapesados e a

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Goel, Varun, and Sonja Wadelius. "Evaluation of transition towards zero emission commuter ferries : Comparative Analysis of Fuel-based and Battery-based Marine Propulsion System from financial and environmental perspectives." Thesis, KTH, Marina system, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302781.

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The purpose of this study is to compare the life-cycle cost and environmental impact of the existing fuel-based propulsion system, on public commuter ferries in Stockholm, with a battery based propulsion system. The study is divided into multiple layers. First, the operating characteristics of the route Line 80 within Stockholm’s waterborne public transportation (WPT) are collected, such as fuel consumption, propulsion power output, speed, voyage time and propulsion system configuration. Second, based on the energy demand of the route, important parameters related to the existing fuel-based pr

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Marino, Michael G. [Verfasser], and Joachim [Akademischer Betreuer] Maier. "Anion exchange membranes for fuel cells and flow batteries : transport and stability of model systems / Michael G. Marino. Betreuer: Joachim Maier." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2015. http://d-nb.info/1074404912/34.

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Apraiz, Larrucea Itxaso. "Development and application of a proteomic approach to the assessment of pollution in the marine environment." Doctoral thesis, Stockholms universitet, Institutionen för biokemi och biofysik, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-26150.

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Today, assessment of the health of coastal waters is recognized as being important for both the conservation of nature and well-being of humans. Anthropogenic pollution has been the focus of extensive research for some time and a variety of programs for the monitoring and assessment of environmental pollution have been developed. Determination of the levels of pollution in sensitive ‘sentinels’ such as mussels, allows monitoring of these levels in a given area over a prolonged period of time. Furthermore, the biological effects of pollution are reflected in a series of biomarkers, none of whic

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Gutierrez, Saenz Juan. "Energy analysis and cost estimation of a potential On-shore Power Supply system in the Port of Gävle." Thesis, Högskolan i Gävle, Energisystem och byggnadsteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-30378.

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The Port of Gävle is one of the most important harbours in Sweden as far as size and freight capacity is concerned. Marine traffic is increasing greatly, thus environmental pollution as well as noise and vibrations are of major concern in port cities. Shore to ship power supply systems might be a feasible solution to curtail emissions because the Auxiliary Engines are instead shut down while the ship stays alongside the quay. The literature review shows they are reliable and very appealing in all respects, thereby contributing to sustainable development. Taking into account the kind of vessels

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Stach, Robert [Verfasser]. "Mid infrared sensor technologies for environmental and occupational health and safety : advancement and application of infrared spectroscopies for monitoring fuel residues in marine ecosystems,and inhalable particles in mining scenarios / Robert Stach." Ulm : Universität Ulm, 2021. http://d-nb.info/1240314388/34.

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Edfors, Jonas, and Robin Bremberg. "Liquid Natural Gas : A study of the environmental impact of LNG in comparison to diesel." Thesis, Linnéuniversitetet, Sjöfartshögskolan (SJÖ), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-103569.

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Liquefied Natural Gases (LNG) has been an alternative fuel in the marine industry for several years, but lately, the amount of ships that have been powered by methane has increased a lot. Some of the reasons for this is because LNG does not contain any sulfur and releases less nitrogen oxides than traditional maritime fuels. In this essay, LNG will be compared to diesel from an environmental perspective with focus on CO2 emissions and its equivalents. International Maritime Organization (IMO) implemented Energy Efficiency Design Index (EEDI) requirements that adjusts how much CO2 is allowed in

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Zatloukalová, Nikola. "Podnikatelský plán založení čerpací stanice." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2014. http://www.nusl.cz/ntk/nusl-224784.

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The main goal of this thesis is to create business plan for the establishment of the petrol station operating as BENZINA franchise. Entrepreneurship, requirements of the business plan, franchising and definition of used analysis are described in the theoretical part. Necessary analyses are performed in the analytical part. Suggested business plan and schedule of its implementation are described in the last part of this thesis.

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Moreira, Paulo Jorge Pires. "Shipping and sustainability liquefied natural gas as an alternative fuel : evidence from Portugal." Doctoral thesis, 2019. http://hdl.handle.net/10400.2/8096.

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O transporte marítimo é um elo vital do comércio mundial graças à sua capacidade, confiabilidade e relação custo-eficácia no transporte de grande quantidade de bens; nenhum outro modo de transporte consegue alcançar tais economias de escala. Mas este argumento subestima os custos reais. A frota marítima internacional, excluindo barcos de pesca e navios militares, produziu em 2012 cerca de 796 milhões de toneladas (Mt) de dióxido de carbono (CO2) e 816 Mt de dióxido de carbono equivalente (CO2e) de gases de efeito de estufa (GEE) combinando dióxido de carbono (CO2), metano (CH4) e óxido nitroso

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Kurasaki, Ryan. "Investigation Of A Biological Fuel Cell In Methane Hydrate Marine Sediment." Thesis, 2004. http://hdl.handle.net/10125/10402.

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Jahn-Hwa, Yang, and 楊建華. "A study on the effects of using low sulphur marine gas oil to the fuel injection pump of marine diesel engine." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/05636224174992080444.

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碩士<br>國立臺灣海洋大學<br>商船學系所<br>100<br>This research report is made for a brief introduction in the updated MARPOL Regulations and Port Regulations of the Emission Control Areas (ECA) and focusing on the plunger and barrel’s failure of fuel injection pumps of diesel engine after short operation by using low sulphur marine gas oil when ship berthed in the restricted ports of ECA, which also increasing hard operation for the shipping company. Based on technical issues from different diesel engine manufacturers and the U.S. Power Research Inc. and concerned technical papers from other countries with

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PAN, HSIEN TE, and 潘顯德. "Study of Common Rail High Pressure Fuel Injection System for Large Marine Diesel Engine." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/00825578235732651523.

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碩士<br>國立高雄海洋科技大學<br>輪機工程研究所<br>104<br>In response to increasingly tough international environmental regulations and rising oil prices, the development of marine diesel engines, worth exploring in depth for. At present the mainframe manufacturers are mustering their efforts to develop high-performance fuel-efficient, saving energy and environmentally friendly hosts. The heart is the host of the high-pressure fuel injection system, fuel injection performance upgrade if the better to promote as much as possible to achieve complete combustion of fuel, so that more output horsepower can save fuel a

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Valbom, Diogo Valério Martins. "Fuel analysis." Master's thesis, 2020. http://hdl.handle.net/10362/105578.

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This individual analysis consists ofa fuel analysis, regarding both the U.S. airline industry and Southwest Airlines. Co. demonstrating how airlines and institutions try to mitigate the impact that fuel has. In the case of Southwest Airlines Co.,this analysis will quantify the impact ofbothoil prices and fuel efficiency on the share price using a sensitivity analysis. Thissensitivity analysis is based on various growth rates from multiple sources,such has, FAA (both refinery and jet fuel cost) and NYMEX crude oil futures. The value per share computed varies between $38.71and $91.24.

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