Solution Found!
Look at 3.183 and plot the P–v diagram for the process.
Chapter 3, Problem 88HP(choose chapter or problem)
Problem 88HP
Look at Problem 3.183 and plot the P–v diagram for the process. Only T2 is given; how do you determine the second property of the final state? What do you need to check, and does it influence the work term?
Problem 3.183
A piston/cylinder has 0.5 kg of air at 2000 kPa, 1000 K, as shown in Fig. P3.183. The cylinder has stops, so Vmin=0.03m3. The air now cools to 400K by heat transfer to the ambient. Find the final volume and pressure of the air (does it hit the stops?) and the work and heat transfer in the process.
FIGURE P3.183
Questions & Answers
QUESTION:
Problem 88HP
Look at Problem 3.183 and plot the P–v diagram for the process. Only T2 is given; how do you determine the second property of the final state? What do you need to check, and does it influence the work term?
Problem 3.183
A piston/cylinder has 0.5 kg of air at 2000 kPa, 1000 K, as shown in Fig. P3.183. The cylinder has stops, so Vmin=0.03m3. The air now cools to 400K by heat transfer to the ambient. Find the final volume and pressure of the air (does it hit the stops?) and the work and heat transfer in the process.
FIGURE P3.183
ANSWER:
Solution 88 HP
Step 1 of 4:
In this question, we need to plot diagram for the process, we also need to find second property of the final state and we need to check if the second property has influence on the work term
Data given
Temperature
Minimum Volume
Mass
Gas constant for ideal gas