James B. Francis developed the Francis turbine in Lowell, Massachusetts. It is an inward-flow reaction turbine that uses both radial and axial water flow. The Francis turbine has high efficiency between 80-94% and allows for easy control of head changes as well as small generator and runner sizes to accommodate variations in tail water levels. However, it is susceptible to wear from unclean water, difficult inspection, cavitation, water hammer effects, and efficiency losses when operating below 50% of maximum head.

1. WELCOME

2. FRANCIS TURBINE

3. INTRODUCTION:
• The Francis turbine is a type of water turbine that
was developed by James B. Francis in Lowell,
Massachusetts. It is an inward-flow reaction turbine that
combines radial and axial flow concepts.

4. COMPONENTS:

5. COMPONENTS:

6. INSTALLATION:

7. WORKING:

8. WORKING VIDEO:

9. APPLICATION:

10. Advantages:
• Changing of the head must be easily controlled
• Generator size must be small
• Runner size also small
• When the variation in the tail water level is relatively
large then the operating head can be utilized compare
with the total head.
• High efficiency(80-94%)

11. Disadvantages:
• We can notice the wear when the water is un-cleaned.
• Inspection process is seen to difficult.
• Cavitation is the main danger
• Due to the water hammer effects it creates some
problems.
• If head is below 50% then we can face the harmful
effects mainly on the efficiency.
• Cavitation is also a big problem

12. THANKING YOU