Reduction of Resistance, Fuel Consumption and GHG Emission of a Small Fishing Vessel by Adding a Bulbous Bow

Tadeusz Szelangiewicz,Karol Sugalski,Tomasz Abramowski,Katarzyna Żelazny

doi:10.3390/en14071837

Abstract

Protection of marine environment and reduction of GHG emissions are currently imperative criterion for ship design. For ships in service, including fishing vessels powered by internal combustion engines, options of retrofitting are sought to reduce their hydrodynamic resistance and fuel consumption. One such possibility is the addition of a simple-shape bulbous bow, which can be installed at low cost to upgrade a fishing vessel. We present an analysis of the effect that the bulbous bow has on fishing vessel resistance across the whole range of speeds at which the entire work cycle of the vessel is carried out. The resistance was calculated using a calculation of fluid dynamics (CFD) method for the actual size of the vessel. We show that it is possible to develop such a bulbous bow for which the resistance of fishing vessel with a bulbous bow is going to be lower than that of an unmodified shape. For the modified shape of the fishing vessel, fuel consumption, amount and composition of exhaust gases were calculated and the obtained results were compared with the parameters of the vessel without modification. The tests carried out and the obtained calculation results indicate that a significant reduction of fuel consumption and GHG emissions may be obtained for the existing old fishing vessels at low anticipated modernization costs.

Highlights

Environment protection is currently one of the most important criteria used in the design and construction of the means of transport with internal combustion engines.Various energy efficiency and CO2 emission criteria are used in maritime transport, e.g., Energy Efficiency Design Index (EEDI), introduced by the International MaritimeOrganization (IMO) [1,2]
The proposal of the procedure, we present above, to modify the hull shape of operating fishing boats to reduce the propulsion power, fuel consumption and exhaust gas emissions can be considered as a new approach to improve environmental aspects associated with the life cycle of the existing fleet of vessels
There is lack of the available research of this type, focusing on searching for affordable solutions that can be optimal and cheap to build, for given fishing boats and the benefits resulting from their retrofitting

Summary

Introduction

Environment protection is currently one of the most important criteria used in the design and construction of the means of transport with internal combustion engines.Various energy efficiency and CO2 emission criteria are used in maritime transport, e.g., Energy Efficiency Design Index (EEDI), introduced by the International MaritimeOrganization (IMO) [1,2]. Environment protection is currently one of the most important criteria used in the design and construction of the means of transport with internal combustion engines. Various energy efficiency and CO2 emission criteria are used in maritime transport, e.g., Energy Efficiency Design Index (EEDI), introduced by the International Maritime. There has been research on practical implementation on these regulations into the design process of new built ships [3]. The use of turbine engines for ship propulsion to obtain environmental advantages have been presented in [4]. The paper presents ecological parameters’ comparison of turbine and piston engines. The energy characteristics of liquefied natural gas (LNG) carriers have been discussed in [5]. The EEDI formula of LNG carriers was proposed on the ship EEDI formula

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