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How is heat energy converted to mechanical using a turbine?

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Here's how it works in a super-critical boiler: Water is circulated at a high pressure and at a rate of millions of pounds per hour through tubing which makes many turns back and forth as it makes its way through the furnace and other areas of a boiler. read more

Now this high pressure gas passes through the different rows of turbine blades with increasing blade size towards the exit of turbine and here the high pressure gas looses its pressure by expanding through the consecutive rows of turbine.Hence it is clear that heat increases pressure which imparts mechanical energy to turbine by providing rotational motion to it. read more

It is also important to note that the mechanical energy transferred from the turbine to the generator has to overcome the force of the grid. In the US the frequency is 60 Hz. chocolate_ion's single forging nuclear steam rotors are pretty big, and push a lot of mass flow through the system so they have to run at half speed, and use a four pole generator. read more

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