Browsing Institutt for marin teknikk by Title
Now showing items 1878-1897 of 3472
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Life Cycle Assessment of Farmed Salmon, Comparing a Closed with an Open Sea Cage System
(Master thesis, 2014)Ole Jonny Nyhus, Marine Technology, Norwegian University of Science and Technology.Abstract of Master's Thesis, levert 8. juni, 2014:Life Cycle Assessment of Farmed Salmon, Comparing a Closed with an Open Sea Cage System.The ... -
Life cycle assessment of Fuel Cells onboard ships
(Master thesis, 2010)This report is a comparative life cycle assessment (LCA) of a fuel cell and a gas engine. It includes emission release over a lifetime, and recommendations to which system to install in operating vessels today. IMO and ... -
Life Cycle Assessment of Various PMSG-Based Drivetrain Concepts for 15 MW Offshore Wind Turbines Application
(Peer reviewed; Journal article, 2023)There are different configurations selected by both industry and academia as the drivetrain for wind turbines in the power range of 10 to 16 MW. The choice of drivetrain system influences the levelized cost of energy, and, ... -
Life Cycle Cost Comparison Study - An analysis of a LNG ferry's performance and potential for improvement
(Master thesis, 2014)A life cycle cost comparison study between a newly built LNG ferry and a 21 year old conventional ferry was carried out in this study. The objective was to study the LNG vessel s cost effectiveness compared to an equivalent ... -
Life Cycle Cost Model for Condition Monitoring of heat exchanger
(Master thesis, 2010)Shell and tube heat exchangers (H/X) are widely used in the industry. Offshore, the H/Xs are used as heaters or coolers. In this thesis it is assumed that the H/X function is to cool down gas or oil. A large number of ... -
Life cycle model for economical evaluation of replacement/improved maintenance strategy for systems and equipment
(Master thesis, 2011)Systems that deteriorate over time can result in increased operational costs. Reduced efficiency, increased fuel consumption, increased failure rate that induces increased downtime costs, are some of the consequences due ... -
Life Cycle Structural Integrity Management of Offshore Steel Structures
(Chapter, 2016) -
Life cycle structural integrity management of offshore structures
(Journal article; Peer reviewed, 2018)An overview of structural integrity management of offshore structures in the oil and gas energy sector is presented in this article. Based on relevant experiences with the hazards, accidents and means to control the ... -
Life Extension Study of FPSO Systems
(Master thesis, 2010)The objective of this Master Thesis has been to look into the life extension project of the Petrojarl Foinaven FPSO. The Foinaven FPSO has been operating for British Petroleum since 1997 and the objective is to continue ... -
Lifetime profit modelling of ageing systems utilising information about technical condition
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:6, Doctoral thesis, 2008)This dissertation focuses on a framework to support decision making in the management of ageing (oil and gas) facilities. Within the oil and gas sector on the Norwegian Continental Shelf the topic has become important as ... -
Limiting mechanisms for the torque density of wind turbine drivetrains
(Master thesis, 2019)As wind turbines continue to increase in size, so do the loads acting on the drivetrain. To handle the higher loads the mass of the drivetrain needs to increase. A better understanding of this mass increase can result in ... -
Line-Of-Sight-based maneuvering control design, implementation, and experimental testing for the model ship C/S Enterprise I.
(Master thesis, 2014)This report documents the progress, methods and engineering in building and testing theframework for CyberShip Enterprise 1. The main focus have been to modularize, standardize and improve the infrastructure and the operative ... -
Linear analysis and multidisciplinary design optimization of the floater OO-Star
(Master thesis, 2021)In this report, in the continuity of B.de Renty's Master's thesis, a linear framework for the analysis and the optimization of floating wind turbines with automated diffraction/radiation computations, is proposed. A trial ... -
Linear sloshing in a 2D rectangular tank with a flexible sidewall
(Journal article, 2017)A 2D rectangular sloshing tank with a flexible sidewall have been studied analytically and numerically, with a focus on the coupling between sloshing and the flexible wall. This analysis introduces new knowledge of the ... -
Linear wave response of a 2D closed flexible fish cage
(Journal article; Peer reviewed, 2019)Closed flexible fish cages (CFFC) are proposed as a new concept in marine aquaculture, replacing the conventional net cages in order to meet ecological challenges related to fish lice and escapes. A linear mathematical ... -
Linear wave-induced dynamic structural stress analysis of a 2D semi-flexible closed fish cage
(Peer reviewed; Journal article, 2020)Closed fish cages in the sea are proposed as a new concept in marine aquaculture, replacing the conventional net cages in order to meet ecological challenges related to fish lice and escapes. A closed fish cage can be ... -
LNG as fuel in global trades for Höegh car carriers
(Master thesis, 2011)LNG shipping is tracking back to the 1950s, and has for more than half a century been finding promising. It is not until the last years LNG has been taken into commercial shipping as a fuel, and more widely considered a ... -
LNG as fuel on fishing vessels - Assessment of economic feasibility and environmental impact
(Master thesis, 2018)Fisheries have had an important role in the Norwegian economic growth and culture for centuries. While regulatory requirements concerning emission abatement are becoming more demanding, measures aimed at improvement of ... -
LNG-fuelled fishing vessels: A systems engineering approach
(Journal article; Peer reviewed, 2017)Air emissions from fishing vessels must be reduced to comply with progressively stringent environmental regulations. Among the available solutions, liquefied natural gas (LNG) fuel may represent a promising solution, ... -
Load and Response Analysis of a 10 MW SPAR Wind Turbine
(Master thesis, 2023)Teknologi basert på fornybar energi har vekket betydelig interesse, og det er viktig å fortsette forskningen og utviklingen av disse teknologiene. Overgangen til fornybar energi er i gang, med ønsket om å fase ut fossile ...