Effects of pressure and nozzle angle on RPM: New turbine pico hydro nest-lie model

The characteristics of pressure and nozzle angle are an important aspect of the nest-lie turbine in order to produce maximum RPM. The goal is to design a small-capacity turbine with high efficiency for the limited flow of water throughout the year. This research was carried out through the following stages: (1) designing a turbine, (2) creating a prototype turbine nest-lie, (3) taking measurements, and (4) analyzing the measurement data. At a water pressure of 20 psi, the nest-lie model turbine yielded a maximum RPM of 71.07 for pump A at a nozzle angle of 25.5°, an RPM of 65.50 for pump B at a nozzle angle of 27°, and an RPM of 119.21 for the combination of pumps A and B at a nozzle angle of 27°. At the nozzle 0° position against the turbine axis, the nozzle was set to 240, resulting in a maximum RPM of 170.52 at 28 psi pressure. This suggests that the higher the air pressure, the higher the resulting RPM from the volume of air held in the nest-lie.