Hydraulic Turbines: Lecture Notes, Suitability, Runaway Speed and Draft Tube. [With equations and examples] Note # 1. Introduction to Hydraulic Turbines: A hydraulic turbine is a prime mover which converts a substantial part of the potential and kinetic energy of flowing water to mechanical energy. Water stored in high level reservoirs like dams has enormous potential energy. This water having [...]
Learn about the comparison between Francis and Kaplan turbines. Comparison # Kaplan Turbine: 1. Kaplan turbine is a compact unit. 2. For a given head and output Kaplan turbine runs at a higher speed. 3. This is an axial flow turbine. 4. This turbine has a small number of blades (generally 4). 5. Loss of energy due to friction of [...]
Governing of a Turbine: Oil Pressure Governor, Needle Valve and Surge Tank! Meaning of Governing of a Turbine: Governing of a turbine means regulating the speed of the turbine. This is accomplished by the use of a turbine governor. A governor is the means to maintain the turbine at a constant design speed even though the load on the turbine [...]
In this article we will discuss about:- 1. Performance of a Turbine under Unit Head 2. Specific Speed of Turbine as a Type Number 3. Model Testing 4. Characteristic Curves. Performance of a Turbine under Unit Head: In the studies of comparison of the performances of turbines of different output, and speeds and different heads, it is convenient to determine [...]
Learn about the comparison between reaction and impulse turbines. Comparison # Reaction Turbine: 1. Only a part of the available total head is converted into kinetic head after the water enters the wheel. 2. The velocity and pressure change as the water flows through the wheel. 3. The wheel is always full of water. Water flows into the wheel throughout [...]