The assessment of oil products tanker design methods and technologies to enhance the Energy Efficiency Design Index measure by means of computer simulation and trend analysis

Hauerhof, E. (2017). The assessment of oil products tanker design methods and technologies to enhance the Energy Efficiency Design Index measure by means of computer simulation and trend analysis. (Unpublished Doctoral thesis, City, University of London)

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Abstract

The primary objective of this PhD research is to develop an advanced understanding of the necessary and realistic performance expectations from a full form medium size ship system by means of numerical computer modelling. This includes the minimisation of the harmful environmental signature by increasing its efficiency in compliance with the EEDI requirements while in search of how the EEDI methodology might be enhanced. The investigation has focused on a medium sized products tanker acting as a midpoint of the spectrum of ship sizes within the range of 20,000 – 60,000 DWT of this type.

In order to solve such an extensive problem, in the first place, it was important to analyse the energy efficient technology market in a structured manner and then, to identify the most favourable fuel consumption reduction methods that can be associated with the examined ship type. Next, an integrated computer simulation model, involving linked engine, propeller and hull analysis programs, has been developed and calibrated with the model tests and sea trial data. The ship system has been analysed under diverse conditions including various propulsion systems, innovative machinery arrangements, efficiency enhancing hydrodynamic appendages as well as changing weather and load conditions.

The evaluation of potential benefits associated with the deployment of innovative technology(s), operation profile(s) or their combination has been made by comparing the designated Energy Efficiency Indicators (EDI), namely, the propulsive efficiency, fuel oil consumption, exhaust emissions footprint and EEDI, respectively associated with the technical, fuel savings, environmental and legal perspectives.

In addition, such a comprehensive analysis has also helped to detect a number of uncertainties in the current EEDI formulation while pointing out ways in which it can be improved.

Item Type: Thesis (Doctoral)
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: School of Engineering & Mathematical Sciences > Engineering
URI: http://openaccess.city.ac.uk/id/eprint/17635

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