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Influence of exogenous and endogenous factors on the exergy analysis of 3-column array wind farm

Published Online:February 28, 2014pp 83-100https://doi.org/10.1504/IJEX.2014.059514

Abstract

Influence of exogenous and endogenous factors on the exergy analysis of 3 Column array wind farm for two different layouts are highlighted in this paper. Nine turbines were placed in two different layouts to analyse the influence of exogenous factors such as wind velocity, wind direction, wind distribution and distance between turbines. Endogenous factors considered were diameter of rotor, hub height and number of blades. Models developed for energy and exergy efficiency estimation were tested using two different site data. Energy and exergy efficiency were found to be very sensitive to mean velocity and Weibull scale factor, which are site specific. Design wind speed, free stream wind speed and position of turbines in the wind farm contribute appreciably to the wind energy utilisation of the farm. A significant improvement in energy and exergy efficiency can be noticed with very small changes in wind direction for even complex positioning of turbines.

Keywords

exergy, exergy efficiency, aerodynamics, 3-column array wind farm, exogenous and endogenous variables.

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