Mumbai University > Mechanical Engineering > SEM 6 > Thermal and Fluid Power Engineering

Marks: 4M

Limitations of Pelton wheel turbines:

1. These turbines require large operating heads.
2. To generate a given output power under a smaller head, the rate of flow through the turbines has to be higher which requires an increase in the jet diameter.
3. Overall the size of the pelton wheel turbine is large and the setup appears bulky.
4. Variation in the operating heads is very difficult to control.
5. The efficiency of these turbines reduces with the time.
6. The operating head cannot be utilized even when the variation in the tail water level is relatively large when compared to total head.