Turbines_lecture

Turbines_lecture - Turbines (Most material from Fluid...

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Turbines (Most material from Fluid Mechanics , Ç engel and Cimbala, Chapter 14) Introduction and Terminology : Turbine ” is a general term for any device that extracts mechanical energy from a fluid – generally converting it to rotating energy of a turbine wheel. For liquids, we usually call them “ hydraulic turbines ” or “ hydroturbines ”. For gases, we usually call them “ wind turbines ”, “ gas turbines ”, or “ steam turbines ”, depending on the type of gas being used. Just as with pumps, there are two basic types of turbine: o Positive displacement turbines – fluid is forced into a closed volume, and then the fluid is pushed out. o Dynamic turbines – no closed volume is involved; instead, rotating blades called runner blades or buckets extract energy from the fluid. In general, positive-displacement turbines are used for flow measurement, rather than for production of power, whereas dynamic turbines are used for both power generation and flow measurement.
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Turbines_lecture - Turbines (Most material from Fluid...

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