Consider a steam power plant that operates on a simple Rankine cycle that has a net power output of 30 MW. Steam enters the turbine at 7MPa and 500 ⁰C and is cooled to a saturated liquid in the condenser at a pressure of 10 kPa. The condenser uses cooling water from a lake that runs through the tubes of the condenser at a rate of 2000 kg/s. Both the pump and turbine have an isentropic efficiency of 87%. Assume that both the boiler and condenser operate at constant pressure. a. Find the actual turbine work (kJ/kg) b. Find the actual pump work (kJ/kg) using the constant volume assumption c. Find the thermal efficiency of the cycle (33.8%, use for checking work only) d. Find the mass flow rate of the steam
Consider a steam power plant that operates on a simple Rankine cycle that has a net power output of 30 MW. Steam enters the turbine at 7MPa and 500 ⁰C and is cooled to a saturated liquid in the condenser at a pressure of 10 kPa. The condenser uses cooling water from a lake that runs through the tubes of the condenser at a rate of 2000 kg/s. Both the pump and turbine have an isentropic efficiency of 87%. Assume that both the boiler and condenser operate at constant pressure. a. Find the actual turbine work (kJ/kg) b. Find the actual pump work (kJ/kg) using the constant volume assumption c. Find the thermal efficiency of the cycle (33.8%, use for checking work only) d. Find the mass flow rate of the steam
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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Consider a steam power plant that operates on a simple Rankine cycle that has a net
power output of 30 MW. Steam enters the turbine at 7MPa and 500 ⁰C and is cooled
to a saturated liquid in the condenser at a pressure of 10 kPa. The condenser uses
cooling water from a lake that runs through the tubes of the condenser at a rate of
2000 kg/s. Both the pump and turbine have an isentropic efficiency of 87%. Assume
that both the boiler and condenser operate at constant pressure.
a. Find the actual turbine work (kJ/kg)
b. Find the actual pump work (kJ/kg) using the constant volume assumption
c. Find the thermal efficiency of the cycle (33.8%, use for checking work only)
d. Find the mass flow rate of the steam
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