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## Main Question or Discussion Point

Hi,

I'm have big problems calculating the Isentropic Effeciencies of steam turbines. There is a HP, IP and LP turbine in the system. I know the calculation is (h1 - h2)/(h1 - h2'), i have the temperatures and pressures in and out for the first two turbines so i can easily get h1 and h2 from the steam tables for each of these but how do i find h2'??

any help on this would be great, its been wrecking my head for hours.

Thanks

I'm have big problems calculating the Isentropic Effeciencies of steam turbines. There is a HP, IP and LP turbine in the system. I know the calculation is (h1 - h2)/(h1 - h2'), i have the temperatures and pressures in and out for the first two turbines so i can easily get h1 and h2 from the steam tables for each of these but how do i find h2'??

any help on this would be great, its been wrecking my head for hours.

Thanks