Solution Found!
A piston/cylinder device contains 0.1 kg of air at 300 K
Chapter 3, Problem 155HP(choose chapter or problem)
Problem 155HP
A piston/cylinder device contains 0.1 kg of air at 300 K and 100 kPa. The air is now slowly compressed in an isothermal (T = constant) process to a final pressure of 250 kPa. Show the process in a P–V diagram, and find both the work and heat transfer in the process.
Questions & Answers
QUESTION:
Problem 155HP
A piston/cylinder device contains 0.1 kg of air at 300 K and 100 kPa. The air is now slowly compressed in an isothermal (T = constant) process to a final pressure of 250 kPa. Show the process in a P–V diagram, and find both the work and heat transfer in the process.
ANSWER:
Solution 155 HP
Step 1 of 3
We have to find the work and heat transfer in an isothermal process and show the process on a diagram.
The work done in an isothermal process can be found from the expression.
From the ideal gas equation
Where,
kg
gas constant for air
= 0.287 kJ/kgK
K
kPa
kPa
Thus,