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A combined cycle power plant has the operating points shown in the figure below. Air enters the compressor of the gas cycle at 14.7 psi (atmospheric pressure) and 60*F with a volumetric flow rate of 40,000 ft/min. The compressor operates with a pressure ratio of 11 and an isentropic efficiency of 87%. The air enters the turbine at state 3 at 2140*F, and the turbine operates with an isentropic efficiency of 90%. The air exiting the turbine passes through the interconnecting heat exchanger is exhausted to the atmosphere at 400*F. Combustor Cias turbine Compressor Turbino Air inlet Exhaust Heat-recovery steam generator Turbine Vapor cycle Putup Соndenser 10 Cooling water Water enters the turbine of the vapor cycle at 1000 psi and 900*F. The turbine operates with an efficiency of 90%. The water exiting the turbine is condensed to a saturated liquid

A combined cycle power plant has the operating points shown in the figure below. Air enters the compressor of the gas cycle at 14.7 psi (atmospheric pressure) and 60*F with a volumetric flow rate of 40,000 ft/min. The compressor operates with a pressure ratio of 11 and an isentropic efficiency of 87%. The air enters the turbine at state 3 at 2140*F, and the turbine operates with an isentropic efficiency of 90%. The air exiting the turbine passes through the interconnecting heat exchanger is exhausted to the atmosphere at 400*F. Combustor Cias turbine Compressor Turbino Air inlet Exhaust Heat-recovery steam generator Turbine Vapor cycle Putup Соndenser 10 Cooling water Water enters the turbine of the vapor cycle at 1000 psi and 900*F. The turbine operates with an efficiency of 90%. The water exiting the turbine is condensed to a saturated liquid

Elements Of Electromagnetics
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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Also why not assume that P1=P4?

1. A combined cycle power plant has the operating points shown in the figure below. Air enters the compressor of the gas cycle at 14.7 psi (atmospheric pressure) and 60ʻF with a volumetric flow rate of 40,000 ft/min. The compressor operates with a pressure ratio of 11 and an isentropic efficiency of 87%. The air enters the turbine at state 3 at 2140°F, and the turbine operates with an isentropic efficiency of 90%. The air exiting the turbine passes through the interconnecting heat exchanger is exhausted to the atmosphere at 400*F. Combustor Cias turbine Compressor Turhine gas Air inlet Exhaust Heat-recovery steam generator Turhine Vapor суcle 11 Putmp Condenser 10 Cooling water Water enters the turbine of the vapor cycle at 1000 psi and 900°F. The turbine operates with an efficiency of 90%. The water exiting the turbine is condensed to a saturated liquid
Transcribed Image Text:1. A combined cycle power plant has the operating points shown in the figure below. Air enters the compressor of the gas cycle at 14.7 psi (atmospheric pressure) and 60ʻF with a volumetric flow rate of 40,000 ft/min. The compressor operates with a pressure ratio of 11 and an isentropic efficiency of 87%. The air enters the turbine at state 3 at 2140°F, and the turbine operates with an isentropic efficiency of 90%. The air exiting the turbine passes through the interconnecting heat exchanger is exhausted to the atmosphere at 400*F. Combustor Cias turbine Compressor Turhine gas Air inlet Exhaust Heat-recovery steam generator Turhine Vapor суcle 11 Putmp Condenser 10 Cooling water Water enters the turbine of the vapor cycle at 1000 psi and 900°F. The turbine operates with an efficiency of 90%. The water exiting the turbine is condensed to a saturated liquid
state at a pressure of 1 psi before entering the pump. The pump operates with an efficiency of 72%. Using a cold air standard analysis with k = 1.4 for the gas cycle, determine: a. The mass flow rate of air, in Ibm/h, b. The mass flow rate of water, in Ibm/h, c. The mass flow rate of cooling water passing through the condenser, in Ibm/h, if it is supplied from the cooling tower at 55*F and returns at 80*F, d. The rate at which energy must be added to the system by heat transfer, in Btu/h, e. The net power output of the system, in Btu/h, and f. The thermal efficiency of the cycle.
Transcribed Image Text:state at a pressure of 1 psi before entering the pump. The pump operates with an efficiency of 72%. Using a cold air standard analysis with k = 1.4 for the gas cycle, determine: a. The mass flow rate of air, in Ibm/h, b. The mass flow rate of water, in Ibm/h, c. The mass flow rate of cooling water passing through the condenser, in Ibm/h, if it is supplied from the cooling tower at 55*F and returns at 80*F, d. The rate at which energy must be added to the system by heat transfer, in Btu/h, e. The net power output of the system, in Btu/h, and f. The thermal efficiency of the cycle.
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