Mechanical Engineering - Steam Nozzles and Turbines - Discussion
Discussion Forum : Steam Nozzles and Turbines - Section 2 (Q.No. 16)
16.
The velocity of steam, in reaction turbines, is increased in the fixed blades as well as in moving blades.
Discussion:
17 comments Page 1 of 2.
Anandan said:
8 years ago
Anyone please explain it clearly. I think,
IN F.B = V increases and P decreases.
IN M.B = V decreases and P decreases.
IN F.B = V increases and P decreases.
IN M.B = V decreases and P decreases.
Pravin Manohar said:
4 years ago
False, the velocity is decreasing in moving blades.
Vinay BEL said:
5 years ago
Velocity is decreasing in moving blades and increases in fix blades if it is a reaction turbine.
Mayur khairnar said:
5 years ago
@All.
Velocity is decreasing in moving blades and increases in fix blades if it is a reaction turbine.
Here, Your question should be. Pressure is decreased in moving blade as well as in fixed blades in reaction turbine.
Velocity is decreasing in moving blades and increases in fix blades if it is a reaction turbine.
Here, Your question should be. Pressure is decreased in moving blade as well as in fixed blades in reaction turbine.
Kittu said:
7 years ago
The velocity of steam is increased in the fixed blades and is reduced while passing through the moving blades.
Basant said:
7 years ago
In moving blade the pressure drops.
It is right but the K.E 1/2mv^2 is used for shaft work and the rest energy is guided to the other row. Hence velocity decrease in moving blade.
It is right but the K.E 1/2mv^2 is used for shaft work and the rest energy is guided to the other row. Hence velocity decrease in moving blade.
Anonymous said:
8 years ago
In reaction, turbine only pressure compounding occurs.
And there are two kinds of blades fixed (nozzle) which acts as an expander while the other is moving the blade.
The pressure, as well as velocity increases in fixed blade and the both, will decrease in moving blade.
And there are two kinds of blades fixed (nozzle) which acts as an expander while the other is moving the blade.
The pressure, as well as velocity increases in fixed blade and the both, will decrease in moving blade.
Krishna kumar pal said:
8 years ago
In a reaction turbine, fixed blade works like a nozzle so velocity increase in fixed blade but a decrease in moving the blade.
Atul kumar said:
8 years ago
In a fixed blade there is drop in pressure due to which absolute velocity increases. There is furter drop in pressure in moving blade due to which relative velocity increases.
Sourabh said:
1 decade ago
Wrong : Velocity increases in fixed blades and decreases in moving.
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