Breastshot Waterwheel/Water Turbine

Breastshot waterwheel / water turbine is a blend of overshot waterwheel and undershot waterwheel type that are seen from the received energy. High-fall distance does not exceed the diameter of waterwheel, the direction of water flow that drives the paddle wheel around the axis of the shaft waterwheel. Breastshot waterwheel type improves the performance of undershot waterwheel type.

Figure 1: Breastshot Waterwheel /Water Turbine

The following below are the advantages and disadvantages of using a breastshot waterwheel / water turbine:

Advantages of breastshot waterwheel / water turbine:

1. Breastshot waterwheel / water turbine type is more efficient than undershot waterwheel type.
2. When compared to overshot waterwheel, this type has shorter of fall heightl.
3. Breastshot waterwheel can be applied on a flat stream of water resources.

Disadvantages of breastshot waterwheel / water turbine:

1. Blades of this type are not flat like the undershot type but more complicated.
2. Required dams on stream flow flat.
3. Efficiency is smaller than the overshot waterwheel type.