Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Consider a cogeneration system operating as shown in the figure below. Steam enters the first turbine stage at 6 MPa, 540C. Between the first

image text in transcribed

Consider a cogeneration system operating as shown in the figure below. Steam enters the first turbine stage at 6 MPa, 540C. Between the first and second stages, y = 45% of the steam is extracted at 500 kPa and diverted to a process heating load of 2process = 5x108 kJ/h. Condensate exits the process heat exchanger at 450 kPa with specific enthalpy of 589.13 kJ/kg and is mixed with liquid exiting the lower-pressure pump at 450 kPa. The entire flow is then pumped to the steam generator pressure. At the inlet to the steam generator the specific enthalpy is 469.91 kJ/kg. Saturated liquid at 60 kPa leaves the condenser. The turbine stages and the pumps operate with isentropic efficiencies of 82% and 88%, respectively. Qin (1-y) Steam generator P1-6 MPa T = 540C Turbine =82% (1) P=P = 6 MPa h = 469.91 kJ/kg Pump 2 77p2 = 88% W 12 P6 Ps 450 kPa Pump 1 P=500 kPa (1-y) 7pl = 88% Heat exchanger P = 450 kPa 8 hg=589.13 kJ/kg Determine: (a) the mass flow rate of steam entering the first turbine stage, in kg/s. (b) the net power developed by the cycle, in MW. (c) the rate of entropy production in the turbine, in kW/K. 3 P3 = 60 kPa Qout Condenser P4=P3 = 60 kPa x=0 (saturated liquid) Qprocess

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Fundamentals of Materials Science and Engineering An Integrated Approach

Authors: David G. Rethwisch

4th Edition

1118214226, 1118061608, 9781118214220, 978-1118061602

More Books

Students also viewed these Mechanical Engineering questions

Question

Why is sexual harassment an ethical issue in the workplace?

Answered: 1 week ago