Wind energy conversion within agricultural farm using vertical axis turbines of optimized SAVONIUS type

Abstract

Wind force is a considerable resource on the basis of which a significant amount of energy can be obtained, necessary in an agricultural farm that is not connected to the energy distribution network. For this case a low capacity wind turbine can be used as a practical solution, which has the possibility to supply the necessary amount of energy within the farm. The solution is represented by the use of a vertical axis wind turbine with that has component an improved SAVONIUS type rotor. Constructive and energy performance aspects of this rotor type are presented based on studies conducted by various researchers over time, being presented the optimal model to be used in the agricultural farm for energy generation. Values of the energetic performances obtained from analytical but also experimental studies of the optimized models of the turbine rotor with vertical axis that works on the Savonius principle are presented. It is also emphasized the advantage of using this solution in terms of protecting the environment by avoiding fuel burns to obtain the energy needed on the agricultural farm.

Review of Specific Performance Parameters of Vertical Wind Turbine Rotors Based on the SAVONIUS Type

“…There are many blade types with different section shapes placed at a different distance from the rotor central axis, known as the blade gap. Figure 2 presents the principal design parameters for the SAVONIUS rotor model [61][62][63][64][65]. Table 1 presents the main constructive parameters with direct influence on the SAVO-NIUS vertical-axis rotor operation.…”

“…Table 2 presents these functional parameters characteristic of any type of turbine rotor with a vertical-axis as well as the characteristic relation for each parameter [61][62][63][64][65].…”

“…The power coefficient as it is presented by Ragheb M et al is defined as the ratio between the amount of power converted by the wind turbine rotor (P t ) relative to the available power within the air stream (P a ) [61][62][63][64][65].…”