Abstract In Nepal and the regions along with Andes, sediment erosion is one of major causes failure hydro turbines. Every year lots components turbines exposed to sediment-laden water got eroded resulting unexpected shutdown power plants. The cheapest method repairing these runners other are welding which may induce residual stress, embrittlement, increase carbide content. Therefore, post heat ...

The primary goal of this paper is to evaluate an innovative Z-Blade turbine technology and its potential implications for production costs manufacturing techniques. From literatures, conventional pico-hydro technologies with a capability less than 5kW are getting more attention as good alternatives environmentally friendly power generation, but there expensive complex small generation domestic ...

Several remote communities have limited electricity access and are mainly dependent on environmentally damaging fossil fuels. The installation of microgrid networks green energy initiatives currently addressing this issue. Thus, the techno-economic assessment a that comprises photovoltaic arrays, micro-hydro turbine, diesel generation is proposed herein. Two scenarios evaluated considering incl...

Hydropower is one of the most sustainable and desirable renewable energy sources. Gravitational water vortex hydro turbine (GWVHT) systems are suitable power generation devices for remote rural areas, particularly in developing countries, owing to their small scales low costs. There various GWVHT with different configurations operating conditions. The main components a system include inlet outl...

We report on the experimental study of a precessing vortex core (PVC) in an air model Francis turbine. The focus is placed modal decomposition PVC that occurs draft tube turbine for range operation conditions. turbulent flow fluctuations are assessed using stereo particle image velocimetry (PIV) measurements. Proper orthogonal (POD) applied to antisymmetric and symmetric components velocity fie...

In this study, a standalone hybrid wind turbine (WT)/photovoltaic (PV)/biomass/pump-hydro-storage energy system was designed and optimized based on technical, economic, environmental parameters to provide the load demand with an objective function of minimum cost (COE). The constraints proposed approach are loss power supply probability, excess fraction. allows combination different sources bes...