Steam turbine
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Marten67
What makes a turbine go round? Is it steam mass or is it steam volume?
for example on 10 bar and 600 degrC 1kg steam equals 0.4009m3
on 16 bar and 600 degrC this is 0.2498m3 that is appr. 40% volume
in both cases the enthalpy is appr. the same (3696.7 / 3691.1 kJ/kg)

Or is both possible but is for instance the rendement of the turbine less at lower pressure?
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replied to:  Marten67
gumbo504
Replied to:  What makes a turbine go round? Is it steam mass or...
What generates rotation on a turbine is the change of momentum generated by the jet of steam water hitting the blades. both the mass and volume of the steam are needed to calculate the mass flow rate of the turbine, you have to calculate the flow rate(gpm or lps) times your density at certain temperature and pressure. with the mas flow rate and the enthalpy you can calculate how much energy is the system getting per second. however, I think that for larger applications you might need about 40 bar
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