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Experimental Study of the Performance of A Novel Vertical Axis Wind Turbine
Version 1
: Received: 10 October 2019 / Approved: 11 October 2019 / Online: 11 October 2019 (11:10:59 CEST)
A peer-reviewed article of this Preprint also exists.
Agbormbai, J.; Zhu, W. Experimental Study of the Performance of a Novel Vertical-Axis Wind Turbine. Applied Sciences 2020, 10, 2902, doi:10.3390/app10082902. Agbormbai, J.; Zhu, W. Experimental Study of the Performance of a Novel Vertical-Axis Wind Turbine. Applied Sciences 2020, 10, 2902, doi:10.3390/app10082902.
Abstract
The basic equation for estimating the aerodynamic power captured by an Anderson Vertical Axis Wind Turbine (AVAWT) is a solution of the Navier-Stokes(N-S) equations for a baroclinic, inviscid flow. In a nutshell, the pressure difference across the AVAWT is derived from Bernoulli’s equation; an upshot of the integration of the N-S momentum equation for a baroclinic inviscid flow, Euler’s momentum equation. The resulting expression for the pressure difference across the AVAWT rotor is plotted as a function of freestream speed. Experimentally determined airstream speeds at the AVAWT inlet and outlet, coupled with corresponding freestream speeds are used in estimating the aerodynamic power captured. The aerodynamic power is subsequently used in calculating the aerodynamic power coefficient of the AVAWT. The actual power coefficient is calculated from the power generated by the AVAWT at various free stream speeds and plotted as a function of the latter. Experimental results show that, at all free stream speeds and tip speed ratios, the aerodynamic power coefficient is higher than the actual power coefficient of the AVAWT. Consequently, the power generated by the AVAWT prototype is lower than the aerodynamic power captured, given the same inflow wind condition.
Keywords
anderson-vertical-axis-wind-turbine; actual-power; aerodynamic-power; blockage-factor; power-coefficient; tip-speed-ratio
Subject
Engineering, Energy and Fuel Technology
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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