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(c) A geothermal power plant withdraws saturated liquid at 230°C from a production well at a rate of 230 kg/s and flashes it to a pressure of 510 kPa in an isenthalpic flashing process. The resulting vapor is separated from the liquid in a separator and directed to the turbine as shown. The steam leaves the turbine at 12k Pa with a moisture content of 5% and enters the condenser prior to reinjection well. Assume the dead state enthalpy of water h, is 105 kJ/kg at standard temperature of 25°C. hi = 992 kJ/kg, enthalpy of saturated water at 230°C h2= 2799 kJ/kg, enthalpy of dry saturated steam at 230°C h3 = 2340 kJ/kg, enthalpy of wet vapor at 10kPa |m; = 38 kg/s, mass flow rate through the turbine Seperator Turbine Wou Production well Reinjection well

(c) A geothermal power plant withdraws saturated liquid at 230°C from a production well at a rate of 230 kg/s and flashes it to a pressure of 510 kPa in an isenthalpic flashing process. The resulting vapor is separated from the liquid in a separator and directed to the turbine as shown. The steam leaves the turbine at 12k Pa with a moisture content of 5% and enters the condenser prior to reinjection well. Assume the dead state enthalpy of water h, is 105 kJ/kg at standard temperature of 25°C. hi = 992 kJ/kg, enthalpy of saturated water at 230°C h2= 2799 kJ/kg, enthalpy of dry saturated steam at 230°C h3 = 2340 kJ/kg, enthalpy of wet vapor at 10kPa |m; = 38 kg/s, mass flow rate through the turbine Seperator Turbine Wou Production well Reinjection well

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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(c) A geothermal power plant withdraws saturated liquid at 230°C from a production well at a rate of 230 kg/s and flashes it to a pressure of 510 kPa in an isenthalpic flashing process. The resulting vapor is separated from the liquid in a separator and directed to the turbine as shown. The steam leaves the turbine at 12k Pa with a moisture content of 5% and enters the condenser prior to reinjection well. Assume the dead state enthalpy of water h, is 105 kJ/kg at standard temperature of 25°C. hi = 992 kJ/kg, enthalpy of saturated water at 230°C h2= 2799 kJ/kg, enthalpy of dry saturated steam at 230°C h3 = 2340 kJ/kg, enthalpy of wet vapor at 10kPa m2 = 38 kg/s, mass flow rate through the turbine Seperator Turbine Wout Production well Reinjection well 8 Given the values of hi, h2, hz and mz in the table above: i. Formulate the enthalpy, h4 ii. Judge the turbine power output, Pout ii. Evaluate the thermal efficiency of the plant, nth
Transcribed Image Text:(c) A geothermal power plant withdraws saturated liquid at 230°C from a production well at a rate of 230 kg/s and flashes it to a pressure of 510 kPa in an isenthalpic flashing process. The resulting vapor is separated from the liquid in a separator and directed to the turbine as shown. The steam leaves the turbine at 12k Pa with a moisture content of 5% and enters the condenser prior to reinjection well. Assume the dead state enthalpy of water h, is 105 kJ/kg at standard temperature of 25°C. hi = 992 kJ/kg, enthalpy of saturated water at 230°C h2= 2799 kJ/kg, enthalpy of dry saturated steam at 230°C h3 = 2340 kJ/kg, enthalpy of wet vapor at 10kPa m2 = 38 kg/s, mass flow rate through the turbine Seperator Turbine Wout Production well Reinjection well 8 Given the values of hi, h2, hz and mz in the table above: i. Formulate the enthalpy, h4 ii. Judge the turbine power output, Pout ii. Evaluate the thermal efficiency of the plant, nth
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