1800 RPM vs 3600 RPM
1800 RPM vs 3600 RPM
(OP)
I think most nuclear reactors spin their steam turbines at 1800 RPM, or 1/2 the speed of those used on fossil plants. Any idea why the slower rotational speed on the nukes?
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RE: 1800 RPM vs 3600 RPM
1 - nukes almost always have lower steam pressures. Steam temperatures and associated pressures are limited by material considerations on the primary side. There is no superheating (except when steam pressure is reduced).
2 - nukes tend to be larger (more MW). Usually but not always.
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RE: 1800 RPM vs 3600 RPM
RE: 1800 RPM vs 3600 RPM
RE: 1800 RPM vs 3600 RPM
rmw
RE: 1800 RPM vs 3600 RPM
RE: 1800 RPM vs 3600 RPM
In the pump world, high-flow / low-Dp pumps tend to be low speed. Low flow, high-dp pumps tend to be high speed. It has something to do with keeping "specific speed" in an efficient range.
I don't know if the same applies directly to turbines, but it seems to fit. The nukes have lower dp and for higher power need higher flow. So the logic used for pumps seems to apply to turbines in this case, although I don't know if the reasons are the same.
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