A multi-stagé high-pressure steam turbine is supplied with steam at a stagnation pressure of 7 MPa. and a stagnation temperature of 500°C. The corresponding specific enthalpy is 3410 kJ/kg. The steam exhausts from the turbine at a stagnation pressure of 0.7 MPa, the steam having been in a superheated condition throughout the expansion. It can be assumed that the steam behaves like a perfect gas over the range of the expansion and that y = 1.3. The specific volume of superheated steam is represented by pv = 0.231(h-1943) where p is in kPa, v is in m³kg and h is in kJkg. Given that the turbine flow process has a small-stage efficiency of 0.82, detemine the temperature and specific volume at the end of the expansion.
A multi-stagé high-pressure steam turbine is supplied with steam at a stagnation pressure of 7 MPa. and a stagnation temperature of 500°C. The corresponding specific enthalpy is 3410 kJ/kg. The steam exhausts from the turbine at a stagnation pressure of 0.7 MPa, the steam having been in a superheated condition throughout the expansion. It can be assumed that the steam behaves like a perfect gas over the range of the expansion and that y = 1.3. The specific volume of superheated steam is represented by pv = 0.231(h-1943) where p is in kPa, v is in m³kg and h is in kJkg. Given that the turbine flow process has a small-stage efficiency of 0.82, detemine the temperature and specific volume at the end of the expansion.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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![A multi-stage high-pressure steam turbine is supplied with steam at a
stagnation pressure of 7 MPa. and a stagnation temperature of 500°C. The
corresponding specific enthalpy is 3410 kJ/kg. The steam exhausts from the
turbine at a stagnation pressure of 0.7 MPa, the steam having been in a
superheated condition throughout the expansion. It can be assumed
that the steam behaves like a perfect gas over the range of the expansion and
that y = 1.3. The specific volume of superheated steam is represented by
pv = 0.231(h-1943) where p is in kPa, v is in mkg and h is in kJ/kg. Given
that the turbine flow process has a small-stage efficiency of 0.82, detemine
the temperature and specific volume at the end of the expansion.
Following the Q1, find out the reheat factor RH.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb567900a-5979-4a9b-afe3-afec12c1d4bd%2Fa5fa9984-513a-4b19-8e0a-4ee1e93e05af%2Fjb6xscg_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A multi-stage high-pressure steam turbine is supplied with steam at a
stagnation pressure of 7 MPa. and a stagnation temperature of 500°C. The
corresponding specific enthalpy is 3410 kJ/kg. The steam exhausts from the
turbine at a stagnation pressure of 0.7 MPa, the steam having been in a
superheated condition throughout the expansion. It can be assumed
that the steam behaves like a perfect gas over the range of the expansion and
that y = 1.3. The specific volume of superheated steam is represented by
pv = 0.231(h-1943) where p is in kPa, v is in mkg and h is in kJ/kg. Given
that the turbine flow process has a small-stage efficiency of 0.82, detemine
the temperature and specific volume at the end of the expansion.
Following the Q1, find out the reheat factor RH.
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