Maximizing primary energy conversion in a direct drive turbine for wave power extraction

Prasad, Deepak D. and Lee, Y.H. (2012) Maximizing primary energy conversion in a direct drive turbine for wave power extraction. International Journal of Mechanic Systems Engineering, 2 (4). pp. 132-140. ISSN 2225-7403

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Abstract

Renewable energy sources offer a clean and environmentally friendly alternative to generate electricity. Renewable energy is the energy that is obtained from the never ending and free currents of energy occurring in the natural environment. With the help of appropriate devices the energy can be extracted to produce power to meet the demands of the society. The present paper explores the possibility of utilizing a direct drive turbine of cross flow type to extract power from waves. The primary objective is to maximize the energy conversion by making changes to the front guide nozzle and the rear chamber. The simulation was carried out using commercial CFD code ANSYS CFX. The base model recorded water power (PWP) of 29.9 W. Upon the completion of modifications, the model with Guide 5 front guide nozzle and a rear chamber with upper fillet radius (RU) of 40 mm and lower fillet radius (RL) of 0 mm recorded the highest power of 37.1 W. This represents an increase of 24.1% in the water power when compared to the base model.

Item Type:	Journal Article
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering T Technology > TJ Mechanical engineering and machinery
Divisions:	Faculty of Science, Technology and Environment (FSTE) > School of Engineering and Physics
Depositing User:	Deepak Prasad
Date Deposited:	22 Jan 2013 20:42
Last Modified:	05 Jan 2018 02:15
URI:	https://repository.usp.ac.fj/id/eprint/5350

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