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Questions and Answers
In which direction does the steam flow in most steam turbines?
In which direction does the steam flow in most steam turbines?
- Axial direction (correct)
- Radial direction
- Vertical direction
- Horizontal direction
What is the basic principle of operation for steam turbines?
What is the basic principle of operation for steam turbines?
- Converting mechanical energy to heat energy
- Using steam to cool down shaft-mounted disks
- Converting heat energy to mechanical energy (correct)
- Directing high velocity air onto shaft-mounted disks
How does the expansion and pressure drop occur in an impulse turbine?
How does the expansion and pressure drop occur in an impulse turbine?
- Both through stationary and moving nozzles
- Through moving nozzles only
- There is no expansion and pressure drop in an impulse turbine
- Through stationary nozzles only (correct)
What creates the steam passages shaped like bent nozzles in a reaction turbine?
What creates the steam passages shaped like bent nozzles in a reaction turbine?
Which type of turbine has expansion and pressure drop occur through both stationary and moving nozzles?
Which type of turbine has expansion and pressure drop occur through both stationary and moving nozzles?
What type of turbine has the steam flowing in the radial direction around the shaft?
What type of turbine has the steam flowing in the radial direction around the shaft?
What is the function of the stationary passage (stator) in an impulse turbine?
What is the function of the stationary passage (stator) in an impulse turbine?
What is the main function of the nozzles in a steam turbine?
What is the main function of the nozzles in a steam turbine?
Which type of turbine uses stationary nozzle-shaped blades to direct steam into moving nozzle-shaped blades?
Which type of turbine uses stationary nozzle-shaped blades to direct steam into moving nozzle-shaped blades?
What is the purpose of blade shrouding in a steam turbine?
What is the purpose of blade shrouding in a steam turbine?
What is the main function of the condenser in a steam power plant?
What is the main function of the condenser in a steam power plant?
In which section of a steam turbine does the velocity of steam decrease while pressure remains constant?
In which section of a steam turbine does the velocity of steam decrease while pressure remains constant?
What is the purpose of the sealing glands in a steam turbine?
What is the purpose of the sealing glands in a steam turbine?
What are the bearings in a steam turbine primarily designed to do?
What are the bearings in a steam turbine primarily designed to do?
What is the main purpose of the stationary nozzles in a steam turbine?
What is the main purpose of the stationary nozzles in a steam turbine?
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Study Notes
Steam Turbine Operation
- Steam flow direction in most steam turbines: axial direction
Turbine Principles
- Basic principle of operation for steam turbines: conversion of thermal energy into mechanical energy
Impulse Turbine
- Expansion and pressure drop occur: through stationary nozzle (stator) and then moving blades
- Function of the stationary passage (stator): to increase steam velocity and pressure drop
Reaction Turbine
- Steam passages shaped like bent nozzles created by: diagonal orientation of stationary blades
- Type of turbine with expansion and pressure drop through both stationary and moving nozzles: reaction turbine
Radial Flow Turbine
- Type of turbine with steam flowing in the radial direction around the shaft: radial flow turbine
Nozzle Function
- Main function of the nozzles: to direct steam into moving blades and increase velocity
- Type of turbine using stationary nozzle-shaped blades to direct steam into moving nozzle-shaped blades: impulse turbine
Blade Shrouding
- Purpose of blade shrouding: to minimize steam leakage and reduce energy loss
Condenser Function
- Main function of the condenser: to condense steam back into liquid water in a steam power plant
Turbine Sections
- Section where velocity of steam decreases while pressure remains constant: diffuser section
Sealing Glands
- Purpose of the sealing glands: to prevent steam leakage and maintain pressure
Bearing Function
- Bearings in a steam turbine primarily designed to: reduce friction and support moving parts
Stationary Nozzles
- Main purpose of the stationary nozzles: to increase steam velocity and pressure drop
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