Solution Found!
The piston/cylinder in Fig. P3.179 contains 0.1 kg R-410a
Chapter 3, Problem 179HP(choose chapter or problem)
Problem 179HP
The piston/cylinder in Fig. P3.179 contains 0.1 kg R-410a at 600 kPa, 60°C. It is now cooled, so the volume is reduced to half of the initial volume. The piston has upper stops mounted, and the piston mass and gravitation are such that a floating pressure is 400 kPa.
a. Find the final temperature.
b. How much work is involved?
c. What is the heat transfer in the process?
d. Show the process path in a P–v diagram.
FIGURE P3.179
Questions & Answers
QUESTION:
Problem 179HP
The piston/cylinder in Fig. P3.179 contains 0.1 kg R-410a at 600 kPa, 60°C. It is now cooled, so the volume is reduced to half of the initial volume. The piston has upper stops mounted, and the piston mass and gravitation are such that a floating pressure is 400 kPa.
a. Find the final temperature.
b. How much work is involved?
c. What is the heat transfer in the process?
d. Show the process path in a P–v diagram.
FIGURE P3.179
ANSWER:
Solution
Step 1 of 4
- We need to find out the final temperature.
Consider,
The volume become half by cooling,
Implies,
The final temperature is
