International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 09 | Sep 2024
p-ISSN: 2395-0072
www.irjet.net
RETROFIT OF ERS IN PROPELLER BLADE TO IMPROVE THE EFFICIENCY OF VESSEL 1Anandaraj S, 2Antony Japastian Sarathi, 3A C Mariyappan, 4G Peterpakiyaraj 1,2Final year Marine cadets, PSNCET, Tirunelveli, Tamilnadu 3,4 Assistant professor, Dept of Marine Engineering, PSNCET, Tirunelveli, Tamilnadu
ABSTRACT
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enhancing the efficiency of existing vessels is not only desirable but essential for sustainable maritime operations.
In the pursuit of enhancing the operational efficiency of marine vessels, retrofitting energy recovery systems (ERS) like pre-swirl stators (PSS) has emerged as a promising solution. This study explores the potential of retrofitting PSS to existing propeller systems as a means to optimize hydrodynamic performance and reduce fuel consumption. A pre-swirl stator, positioned ahead of the propeller, alters the inflow water angles, creating a favorable pre-swirl that mitigates rotational energy losses and enhances propulsion efficiency.
Propulsion systems, particularly propellers, play a pivotal role in the overall energy consumption of a ship. Traditional propeller designs often suffer from inefficiencies due to the rotational energy losses that occur in the wake of the propeller blades. This energy, instead of contributing to thrust, is dissipated in the form of swirling water, leading to reduced propulsive efficiency and increased fuel consumption.
Through computational fluid dynamics (CFD) simulations, the interaction between the PSS and the propeller is analyzed to determine the optimal design parameters that maximize energy recovery and minimize adverse effects on propeller performance.
One innovative approach to addressing this challenge is the retrofitting of energy recovery systems (ERS) such as pre-swirl stators (PSS). A PSS is a fixed device installed ahead of the propeller, designed to create a counter-rotational flow in the water entering the propeller. By optimizing the inflow angles, the PSS reduces the rotational losses in the propeller's wake, leading to improved thrust and overall propulsion efficiency.
The retrofitting process is evaluated for its costeffectiveness, with a focus on installation challenges and expected returns on investment through fuel savings. Additionally, the study assesses the environmental benefits, particularly in terms of reduced greenhouse gas emissions, associated with the improved propulsion efficiency.
This study focuses on the potential benefits of retrofitting pre-swirl stators to existing ships. It explores the design, installation, and performance implications of this technology, drawing on computational fluid dynamics (CFD) simulations to optimize the stator design.
This investigation underscores the potential of PSS retrofitting as a viable strategy for improving the energy efficiency of existing ships. Both economic savings and environmental sustainability in the maritime industry.
KEY WORDS: PSS, CFD, KVLCC2, ERS. 1. INTRODUCTION The maritime industry, a critical backbone of global trade, faces increasing pressure to reduce operational costs and minimize environmental impact. Fuel efficiency and emission reductions have become key priorities for ship operators as they seek to comply with stringent international regulations and economic pressures. As such,
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The economic feasibility, including installation costs and potential fuel savings, is evaluated alongside the environmental benefits of reduced emissions. By retrofitting PSS to existing vessels, the maritime industry can achieve significant improvements in energy efficiency, thereby enhancing both economic and environmental sustainability.
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