A multi-stage high-pressure steam turbine is supplied with steam at astagnation pressure of 7 MPa. and a stagnation temperature of 500°C. Thecorresponding specific enthalpy is 3410 kJ/kg. The steam exhausts from theturbine at a stagnation pressure of 0.7 MPa, the steam having been in asuperheated condition throughout the expansion. It can be assumedthat the steam behaves like a perfect gas over the range of the expansion andthat y = 1.3. The specific volume of superheated steam is represented bypv = 0.231(h-1943) where p is in kPa, v is in mkg and h is in kJ/kg. Giventhat the turbine flow process has a small-stage efficiency of 0.82, deteminethe temperature and specific volume at the end of the expansion.Following the Q1, find out the reheat factor RH.

In this problem γ=1.3 is given,so i am using only that not 1.4, i hope you understand.

Answered: A multi-stagé high-pressure steam…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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multi-stage high –pressure steam turbine is supplied with steam at a stagnation pressure of 7 MPa and a stagnation temperature of 5000C. The corresponding specific enthalpy is 3410kJ.kg. The steam exhaust from the turbine at a stagnation pressure of 0.7 MPa abs., the steam having been in a super-heated condition throughout the expansion. It can be assumed that the steam behaves like a perfect gas over the range of the expansion and that ᵞ = 1.3. Given that the turbine flow process has a small-stage efficiency of 0.82, determine (1) the temperature and specific volume at the end of the expansion; (2) the re-heat factor. The specific volume of superheated steam is represented by pv=0.231(h-1943), where “p” is in kPa, v is in m3/kg and “h” is in kJ/kg.
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