Comparative investigation of Savonius and hybrid H-Savonius wind rotor - an energy and exergy analysis

EAI Endorsed Transactions on Energy Web

Agnimitra Biswas¹  Shikha Bhuyan² 

[1] Mechanical Engineering Department, National Institute of Technology, Silchar, Assam, India-788010;Mechanical Engineering Department, Tezpur University, Tezpur, Assam, India-784028;

关键词: savonius rotor;    h-savonius rotor;    power coefficient;    exergy efficiency;   

DOI  :  10.4108/eai.25-9-2020.166362

来源: DOAJ

【 摘 要 】

Exergyanalysisisavitaltoolforwindpowerdevelopmentapartfromenergyanalysis.ThepresentstudyisbasedonacomparativeenergyandexergyanalysisofSavoniuswindrotorandhybridH-Savoniuswindrotorbasedontheparameters- powercoefficient,poweroutputandexergyefficiency,byusinganexperimentalapproach.Forthistheperformances of a two-bladed Savonius rotor, a three bladed Savonius rotor, and a hybrid two-bladed Savonius and three-bladed H-rotor (H-Savonius rotor)are analyzed at four different wind velocities (7.5, 8.5, 10.5 and 12.5 m/s). The results showthatpowercoefficientforthetwo-bladedSavoniusrotorishigherthanthethree-bladedSavoniusrotorwithamaximum power coefficient of 0.18 at 10m/s wind velocity. The two-bladed Savonius rotor is then attached with the H-rotor having unsymmetrical S818 airfoil blades for which the maximum power coefficient of the hybrid turbine is creased to 0.197. The exergy efficiency of the H-Savonius rotor is found higher than any other rotor, which is increased by 8.5% compared to the two-bladed Savonius rotor and which is also higher than published result. The novelty of the present study is that it analyses the work potential of some prominent vertical axis wind turbines under varying wind speed conditions.

【 授权许可】

Unknown