A Francis turbine with an overall efficiency of $75\%$ is required to…
Previous year question for Fluid Machinery.
Question
A Francis turbine with an overall efficiency of $75\%$ is required to produce $148.25\text{ KW}$ power. It is working under a head of $7.62\text{m}$. The peripheral velocity = $0.26\sqrt{2gH}$ and the radial velocity of flow at inlet is $0.96\sqrt{2gH}$. The wheel runs at $150\text{ rpm}$ and the hydraulic losses in the turbine are $22\%$ of the available energy Assuming radial discharge, determine:
i. The guide blade angle
ii. The wheel vane angle at inlet
iii. Diameter of the wheel at inlet.
- Year: 2018
- Subject: Fluid Machinery