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60 % of the steam is extracted from the turbine and the remainder expands to 10 kPa. Part of the extracted steam is used to heat the feedwater in an open feedwater heater. The rest of the extracted steam is used for process heating and leaves the process heater as a saturated liquid at 0.4 MPa. It is subsequently mixed with the feedwater leaving the feed water heater, and the mixture is pumped to the boiler pressure. Assume the turbines and pumps to be isentropic, determine the mass flow (17.7 ke/e] rate of steam through the boiler for a net power output of 15 MW. Turbine Boiler Process heater Condenser FWH Pump II Pump I Figure 2: An Cogeneration power plant

60 % of the steam is extracted from the turbine and the remainder expands to 10 kPa. Part of the extracted steam is used to heat the feedwater in an open feedwater heater. The rest of the extracted steam is used for process heating and leaves the process heater as a saturated liquid at 0.4 MPa. It is subsequently mixed with the feedwater leaving the feed water heater, and the mixture is pumped to the boiler pressure. Assume the turbines and pumps to be isentropic, determine the mass flow (17.7 ke/e] rate of steam through the boiler for a net power output of 15 MW. Turbine Boiler Process heater Condenser FWH Pump II Pump I Figure 2: An Cogeneration power plant

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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Hi

I'm looking for an explanation of WHY h3 = h4 =h9?

Basically why states 3 and 4 are also saturated liquid alongside state 9? how do i understand it using the information given in the question attatched

 

thank you.

60 % of the steam is extracted from the turbine and the remainder expands to 10 kPa. Part of the extracted steam is used to heat the feedwater in an open feedwater heater. The rest of the extracted steam is used for process heating and leaves the process heater as a saturated liquid at 0.4 MPa. It is subsequently mixed with the feedwater leaving the feed water heater, and the mixture is pumped to the boiler pressure. Assume the turbines and pumps to be isentropic, determine the mass flow [17.7 kg/a] rate of steam through the boiler for a net power output of 15 MW. Turbine Boiler Process heater Condenser FWH Pump II Pump I Figure 2: An Cogeneration power plant
Transcribed Image Text:60 % of the steam is extracted from the turbine and the remainder expands to 10 kPa. Part of the extracted steam is used to heat the feedwater in an open feedwater heater. The rest of the extracted steam is used for process heating and leaves the process heater as a saturated liquid at 0.4 MPa. It is subsequently mixed with the feedwater leaving the feed water heater, and the mixture is pumped to the boiler pressure. Assume the turbines and pumps to be isentropic, determine the mass flow [17.7 kg/a] rate of steam through the boiler for a net power output of 15 MW. Turbine Boiler Process heater Condenser FWH Pump II Pump I Figure 2: An Cogeneration power plant
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