Solution Found!
Energy Analysis of Control Volumes at Steady
Chapter 4, Problem 48P(choose chapter or problem)
Steam enters a turbine operating at steady state at \(2 \mathrm{MPa}\), \(360^{\circ} \mathrm{C}\) with a velocity of \(100 \mathrm{~m} / \mathrm{s}\). Saturated vapor exits at \(0.1 \mathrm{MPa}\) and a velocity of \(50 \mathrm{~m} / \mathrm{s}\). The elevation of the inlet is \(3 \mathrm{~m}\) higher than at the exit. The mass flow rate of the steam is \(15 \mathrm{~kg} / \mathrm{s}\), and the power developed is \(7 \mathrm{MW}\). Let \(g=9.81 \mathrm{~m} / \mathrm{s}^2\). Determine (a) the area at the inlet, in \(\mathrm{m}^2\), and (b) the rate of heat transfer between the turbine and its surroundings, in kW.
Questions & Answers
QUESTION:
Steam enters a turbine operating at steady state at \(2 \mathrm{MPa}\), \(360^{\circ} \mathrm{C}\) with a velocity of \(100 \mathrm{~m} / \mathrm{s}\). Saturated vapor exits at \(0.1 \mathrm{MPa}\) and a velocity of \(50 \mathrm{~m} / \mathrm{s}\). The elevation of the inlet is \(3 \mathrm{~m}\) higher than at the exit. The mass flow rate of the steam is \(15 \mathrm{~kg} / \mathrm{s}\), and the power developed is \(7 \mathrm{MW}\). Let \(g=9.81 \mathrm{~m} / \mathrm{s}^2\). Determine (a) the area at the inlet, in \(\mathrm{m}^2\), and (b) the rate of heat transfer between the turbine and its surroundings, in kW.
ANSWER:Solution 48P
Step 1 of 5:
In this question, we need to find the area at the inlet in
In part b , we need to find the rate of the heat transfer between the turbine and its surrounding in kW
Data given
Steady pressure
Steady temperature
Velocity
Pressure of saturated vapor
Velocity of vapor
Height
Mass flow rate
Power developed
Part a: