Question
Download Solution PDFWhich one of the following is correct statement about Blade cross sectional fluid flow area from inlet to outlet of a turbine?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
- In an impulse turbine, the cross-sectional fluid flow area remains constant from the inlet to the outlet. Impulse turbines allow the steam to expand and drop in pressure before it enters the turbine in a high-speed jet, hitting the turbine blades and causing them to turn. The energy extraction in this design type is based solely on the impulses of changing momentum caused by the redirected flow.
- On the other hand, in a reaction turbine, the fluid's pressure energy is gradually converted into kinetic energy as it passes through the rotor blades. As the fluid accelerates, the flow area narrows to maintain a constant mass flow rate. Therefore, the cross-sectional area converges from the inlet to the outlet.
- Hence, these distinct mechanisms of operation lead to different designs in terms of the cross-sectional fluid flow area from inlet to outlet in impulse and reaction turbines.
Last updated on May 28, 2025
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