A performance investigation of a multi-staging hydrokinetic turbine for river flow

Our world has been relying on fossil fuel, a non-renewable energy that is depleting day by day and negatively impacting the environment. Hydropower is known to contribute a significant portion of the renewable power production. Dams has been the most common technique to generate hydropower. However, such scheme was not able to support the rural areas as it requires large areas and huge amount of water resource. Savonius hydrokinetic turbine (HKT) has been suggested as the device for a small-scale application as it can generate power from low-velocity river flow with less installation cost. With that, the aim of this study is designed to investigate and compare performance of the single-staged and two-staged HKT for river flow. This study considered numerical simulation that includes modelling, testing, and analyzing the data. Then, comparing it with the existing literature results, to identify the solution. This investigation demonstrates an improvement of 8.1% in the efficiency of power coefficient when compared with single-staged HKT.