Answered step by step
Verified Expert Solution
Link Copied!

Question

00
1 Approved Answer

A steam power plant is based on the Rankine cycle with reheat (refer to the figure below). Steam is produced by the boiler/superheater (H1) at

image text in transcribed

A steam power plant is based on the Rankine cycle with reheat (refer to the figure below). Steam is produced by the boiler/superheater (H1) at 100 bar and 600C at a rate of 2.5kgs1. This is expanded to 10 bar in the turbine T1 and then reheated to 600C in heater H2. The steam is then expanded in turbine T2 to a pressure of 0.1 bar. The steam is then condensed in condenser (C-1) which operates at 0.1 bar. The liquid water leaving the condenser may be assumed to be saturated. The condensate is returned, via pump P-1, to the boiler as feed. Turbines T-1 and T-2 have 90% efficiencies. The power required for pump P-1 may be assumed to be negligible. Calculate i) the power (kW) produced in each turbine (T-1, T-2) ii) the duty (kJhr1) of each heater (H1,H2) iii) the duty (kJhr1) of the condenser (C1), and iv) the thermal cycle efficiency. Is the steam leaving turbine T-2 wet or dry? Note: The enthalpy of saturated liquid water at 0.1 bar is 191.81kJkg1. A steam power plant is based on the Rankine cycle with reheat (refer to the figure below). Steam is produced by the boiler/superheater (H1) at 100 bar and 600C at a rate of 2.5kgs1. This is expanded to 10 bar in the turbine T1 and then reheated to 600C in heater H2. The steam is then expanded in turbine T2 to a pressure of 0.1 bar. The steam is then condensed in condenser (C-1) which operates at 0.1 bar. The liquid water leaving the condenser may be assumed to be saturated. The condensate is returned, via pump P-1, to the boiler as feed. Turbines T-1 and T-2 have 90% efficiencies. The power required for pump P-1 may be assumed to be negligible. Calculate i) the power (kW) produced in each turbine (T-1, T-2) ii) the duty (kJhr1) of each heater (H1,H2) iii) the duty (kJhr1) of the condenser (C1), and iv) the thermal cycle efficiency. Is the steam leaving turbine T-2 wet or dry? Note: The enthalpy of saturated liquid water at 0.1 bar is 191.81kJkg1

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access with AI-Powered 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

Students also viewed these Chemical Engineering questions