Questions tagged [turbines]
114 questions
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Torque in axial flow turbine
I want to ask about the torque experienced by a axial flow turbine, in relation to the pitch angle or angle of attack.
If you can suggest an equation, will greatly help.
(I'm new to technical terms, please bear with me)
Alexander
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2
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Why don't we use hot water instead of steam to drive the turbines?
I guess if we do this then, the size of the turbines could become smaller.
The condensor's size also might be reduced.
But the catch over here is the energy density of hot water is less then that of steam. This could be overcome by increasing the…
Mohammed Adain
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5 answers
Is it possible to use Ammonia vapor in steam turbine
I am currently designing a prototype. I have asked to use low boiling point liquid to run a steam turbine. So i am thinking of using liquid ammonia.
What are the complications involved when using vapor ammonia in a steam turbine. Is it possible to…
Christlin Panneer
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2 answers
Calculating water turbine mass based on head and flow
Is there a formula, which would allow to estimate water turbine rotor mass based on head and water flow, or based on the final energy output provided by the turbine? I am interested in rough estimate, not a precise formula.
The range of parameters…
Irigi
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3 answers
Some questions about the specific speed (Ns) of hydro turbines
So we all know the basics behind specific speed Ns of hydro-turbines.
$$N_s = RPM \cdot \frac{ \sqrt{(P)} }{ H^{1.25}}$$
where P is the power output and H is the head. The theory is that once you know the Ns for that model of turbine, you are able…
sithvincent
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1 answer
Acceptability of gaps between rotor blades of a gas turbine
While designining the geometry of different sections of the turbine blade, I've noticed that some of the sections (closer to and including the root) do not have visible gaps if viewed from the leading edge perpendicularly to direction of rotation,…
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What is the ramp rate (up and down) of the Siemens SGT-800 gas turbine (62MW variant)?
I can't seem to find the ramp rate of the Siemens SGT-800 gas turbine in any of their brochures or data sheets. Looking specifically for the ramp rate of the Siemens 62MW SGT-800 gas turbine (in combined cycle).
M.Calugaru
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Are there impulse turbines operating on hot exhaust gas?
Are there impulse turbines that operate efficiently on hot exhaust gases rather than water as the working fluid?
Im thinking about something analogous to a water wheel, since it seems that bucket/blade design in such a turbine would be much easier…
Francis L.
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What exactly makes reaction turbines work?
I was reading about reaction turbines on Wikipedia, it says: "Reaction turbines develop torque by reacting to the gas or fluid's pressure or mass. The pressure of the gas or fluid changes as it passes through the turbine rotor blades."
I understand…
Kv07
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Can a steam turbine can be used with compressed air?
Suppose that a generator is connected to the turbine. I have a large amount of compressed air which will be acting as the driving force for the turbine.
For the above case will I be only left with the turbine used in the thermal powerplants or is…
Tank
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