Cutout Types Analysis on Picohydro Pelton Turbine

Abstract

Pico hydro is a simple electricity generation technology and can be applied in remote areas that do not have access to electricity. Pico hydro systems produce power less than or equal to 5 kW. Pelton turbine is an impulse turbine frequently used in a pico hydro system. Pelton turbine has a cut-out in its buckets that prevent the water jet leak from the tip of the bucket into the next bucket. The study has been done to explain the effects of bucket geometry on energy conversion from water flow into kinetic energy. Four different types of cutouts namely ω, v, w and u were used. This study aims to find the best cutout geometry, which can convert the most water energy. The computation method is utilized to study in detail the flow of the fluid. In this study, there is two principal analysis performed, first is ANOVA blocking design for torque analysis, and the second is a qualitative analysis of the flow passing the cutout. The results indicate that the cutouts of the buckets have a significant influence on generated torque. The analysis revealed that u type cut-out buckets give the best performance among others type of buckets and are the easiest to manufacture.

Novel trends in modelling techniques of Pelton Turbine bucket for increased renewable energy production

“…The work focused more on efficient exploration of the design space and does not explicitly mention the improvement achieved in the performance as compared to the existing designs. Budiarso et al [57] tested 4 different types of cut-outs namely w, v, u and ω. Simulations on these cut-out types were run with a popular CFD solver at different flow velocities and different bucket positions. Torque, rotational velocity and power generated at different angles at different flow rates were analysed via ANOVA block design.…”

Sediment Erosion on Pelton Turbines: A Review

“…Three-dimensional turbulence calculations can accurately predict the actual flow of fluids [139][140][141][142]. In earlier research, the standard k-ω turbulence model was the most widely used for the Pelton turbine, and the RNG k-ω model was also used [143][144][145][146][147][148]. In recent years, scholars have recognized the SST k-ω turbulence model and widely use it to calculate high-speed turbulence for a rotating bucket.…”

Sustainable Island (Sail): An Innovative Way for Reaching a Significant Rise in Indonesia Water, Energy, and Food Nexus Index

“…Pico-hydro is a simple method of power generation that can be used in remote locations where electricity is not available. Based on Budiarso et al [20], pico-hydro systems generate power of less than or equal to 5 kW, which could provide a remote community with enough energy to run light bulbs, radios and televisions, and other appliances. This system does not always need a high-rise building.…”