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An insulated cylinder is divided into two parts of 1 m3
Chapter 3, Problem 151HP(choose chapter or problem)
Problem 151HP
An insulated cylinder is divided into two parts of 1 m3 each by an initially locked piston, as shown in Fig. P3.151. Side A has air at 200 kPa, 300 K, and side B has air at 1.0 MPa, 1000 K. The piston is now unlocked so that it is free to move, and it conducts heat so that the air comes to a uniform temperature TA = TB. Find the mass in both A and B and the final T and P.
FIGURE P3.151
Questions & Answers
QUESTION:
Problem 151HP
An insulated cylinder is divided into two parts of 1 m3 each by an initially locked piston, as shown in Fig. P3.151. Side A has air at 200 kPa, 300 K, and side B has air at 1.0 MPa, 1000 K. The piston is now unlocked so that it is free to move, and it conducts heat so that the air comes to a uniform temperature TA = TB. Find the mass in both A and B and the final T and P.
FIGURE P3.151
ANSWER:
Solution 151 HP
Step 1 of 5
We have to find the mass in both and
and the final temperature
and pressure
.
The mass of the air in both and
parts can be found using ideal gas equation.
Where,
kPa
m3
K
gas constant of air
= 0.287 kJ/molK
Thus,
