Steam enters the high-pressure turbine of an ideal reheat Rankine cycle at 10 MPa and 500°C. The low- pressure turbine inlet admits steam at 1 Mpa. Assume that the pump inlet is a saturated liquid at 10 kPa and that 80 MW of power is produced overall. QUESTION 1 Using the property tables for both the inlet and outlet of the pump, determine the enthalpy in kJ/kg of the pump outlet. Report your answer to two decimal places using rounding. QUESTION 2 Report the amount of heat added, in kJ/kg, in the boiler before the high-pressure turbine to one decimal place using rounding. QUESTION 3 Report the amount of work produced in the high- pressure turbine, in kJ/kg, to one decimal place using rounding.

Steam enters the high-pressure turbine of an ideal reheat Rankine cycle at 10 MPa and 500°C. The low- pressure turbine inlet admits steam at 1 Mpa. Assume that the pump inlet is a saturated liquid at 10 kPa and that 80 MW of power is produced overall. QUESTION 1 Using the property tables for both the inlet and outlet of the pump, determine the enthalpy in kJ/kg of the pump outlet. Report your answer to two decimal places using rounding. QUESTION 2 Report the amount of heat added, in kJ/kg, in the boiler before the high-pressure turbine to one decimal place using rounding. QUESTION 3 Report the amount of work produced in the high- pressure turbine, in kJ/kg, to one decimal place using rounding.

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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Question

Steam enters the high-pressure turbine of an ideal
reheat Rankine cycle at 10 MPa and 500°C. The low-
pressure turbine inlet admits steam at 1 Mpa. Assume
that the pump inlet is a saturated liquid at 10 kPa and
that 80 MW of power is produced overall.
QUESTION 1
Using the property tables for both the inlet and
outlet of the pump, determine the enthalpy in kJ/kg
of the pump outlet. Report your answer to two
decimal places using rounding.
QUESTION 2
Report the amount of heat added, in kJ/kg, in the
boiler before the high-pressure turbine to one
decimal place using rounding.
QUESTION 3
Report the amount of work produced in the high-
pressure turbine, in kJ/kg, to one decimal place
using rounding.

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Step 1: Determining the given variables

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Step 2: Drawing T-s diagram

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Step 3: Finding enthalpy at pump outlet

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Step 4: Finding enthalpy & entropy at boiler exit state

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Step 5: Finding heat added in the boiler

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Step 6: Finding state of point 2 in T-s diagram

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Step 7: Finding work done by high pressure turbine

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