New Devices for Energy Extraction from Air Flow
15th International Scientific Conference "Engineering for Rural Development": Proceedings. Vol.15 2016
Jānis Vība, Staņislavs Noskovs, Vitālijs Beresņevičs, Jānis Dobelis

New devices for energy extraction from air flow are developed. Device consists of central rotor and several plane blades, which are fastened to the rotor with the ability to change the orientation of their working surfaces relative to the direction of incoming wind flow. Each blade is fastened to the rotor with a cylindrical axial hinge, which longitudinal axis is parallel to the rotor’s longitudinal axis. Axles of blades have kinematic connection with the central rotor; therefore blades rotate as the central rotor rotates about its axis. It is considered that axis of the rotor is perpendicular to air flow and simultaneously has arbitrary angle against the horizon. Theoretical and experimental analysis of blade’s interaction with air flow is performed. Aerodynamic coefficients for blade’s drag and lifting forces are determined experimentally in wind tunnel ARMFIELD. Optimization of system parameters is made using programs Excel and MathCad. It is shown that optimal angular rotation frequency ratio between rotor and any blade is equal to 2. Physical model of wind turbine with four blades is made. Experiments with physical model confirm a serviceability of the device and its main advantages in energy extraction from air flow. The proposed method for energy extraction from air flow is patented in Latvia in 2015.


Atslēgas vārdi
air flow, rotor, blade, aerodynamic simulation, experiments
Hipersaite
http://www.tf.llu.lv/conference/proceedings2016/Papers/N131.pdf

Vība, J., Noskovs, S., Beresņevičs, V., Dobelis, J. New Devices for Energy Extraction from Air Flow. No: 15th International Scientific Conference "Engineering for Rural Development": Proceedings. Vol.15, Latvija, Jelgava, 25.-27. maijs, 2016. Jelgava: Latvia University of Agriculture, 2016, 714.-719.lpp. ISSN 1691-5976.

Publikācijas valoda
English (en)
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