Solution Found!
Answer: Using Isentropic Processes/EfficienciesAir in a
Chapter 6, Problem 129P(choose chapter or problem)
Air in a piston–cylinder assembly is compressed isentropically from an initial state where \(T_{1}=340 \mathrm{\ K}\) to a final state where the pressure is 90% greater than at state 1. Assuming the ideal gas model, determine (a) \(T_{2}\), in K, and (b) the work, in kJ/kg.
Questions & Answers
QUESTION:
Air in a piston–cylinder assembly is compressed isentropically from an initial state where \(T_{1}=340 \mathrm{\ K}\) to a final state where the pressure is 90% greater than at state 1. Assuming the ideal gas model, determine (a) \(T_{2}\), in K, and (b) the work, in kJ/kg.
ANSWER:Part (a)
Step 1az:
A piston-cylinder arrangement has an ideal gas. The initial temperature is given. The pressure in the final state is 90 % greater than the state 1. We are going to find the final temperature.
The initial temperature T1 = 340 K
The final pressure P2 = 1.9P1