A turbine is fed with a flow of 20 kg/s of water vapour at 4MPA. The steam is generated in a boiler that supplies it saturated to 6MPA, which is then strangled through a valve prior to entering the turbine to meet the conditions imposed. The process that occurs in the turbine can be considered adiabatic. It is known that at the exit of the turbine the substance is found at 0. 5 MPa. In addition, it is known that the isentropic efficiency of the process that happens in the turbine is 75% (a) Schematize the system. b) Determine the entropy generated by the strangulation (valve) and explain the effects of pressure drop on this specific process. c) Determine the actual power delivered by the turbine and the entropy generated by it process. (d) Represent the overall process (valve and turbine) in a diagram P-v and T-s.

A turbine is fed with a flow of 20 kg/s of water vapour at 4MPA. The steam is generated in a boiler that supplies it saturated to 6MPA, which is then strangled through a valve prior to entering the turbine to meet the conditions imposed. The process that occurs in the turbine can be considered adiabatic. It is known that at the exit of the turbine the substance is found at 0. 5 MPa. In addition, it is known that the isentropic efficiency of the process that happens in the turbine is 75% (a) Schematize the system. b) Determine the entropy generated by the strangulation (valve) and explain the effects of pressure drop on this specific process. c) Determine the actual power delivered by the turbine and the entropy generated by it process. (d) Represent the overall process (valve and turbine) in a diagram P-v and T-s.

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 turbine is fed with a flow of 20 kg/s of
water vapour at 4MP.. The steam is
generated in a boiler that supplies it
saturated to 6MPA, which is then strangled
through a valve prior to entering the turbine to
meet the conditions imposed. The process
that occurs in the turbine can be considered
adiabatic. It is known that at the exit of the
turbine the substance is found at 0. 5 MPa. In
addition, it is known that the isentropic
efficiency of the process that happens in the
turbine is 75%
(a) Schematize the system.
b) Determine the entropy generated by the
strangulation (valve) and explain the
effects of pressure drop on this specific
process.
c) Determine the actual power delivered by
the turbine and the entropy generated by it
process.
(d) Represent the overall process (valve and
turbine) in a diagram P-v and T-s.

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