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Air in a rigid tank is at 100 kPa, 300 K with a volume of
Chapter 3, Problem 184HP(choose chapter or problem)
Problem 184HP
Air in a rigid tank is at 100 kPa, 300 K with a volume of 0.75m3. The tank is heated to 400 K, state 2. Now one side of the tank acts as a piston, letting the air expand slowly at constant temperature to state 3 with a volume of 1.5 m3. Find the pressure at states 2 and 3. Find the total work and total heat transfer.
Questions & Answers
QUESTION:
Problem 184HP
Air in a rigid tank is at 100 kPa, 300 K with a volume of 0.75m3. The tank is heated to 400 K, state 2. Now one side of the tank acts as a piston, letting the air expand slowly at constant temperature to state 3 with a volume of 1.5 m3. Find the pressure at states 2 and 3. Find the total work and total heat transfer.
ANSWER:
Solution 184HP
Step 1 of 6:
Our aim here is to find the pressure at the second and third states, total work and total heat transfer of the air filled tank.
The initial pressure P1 = 100 kPa
The initial temperature T1 = 300 K
The initial volume V1 = 0.75 m3
The gas constant R = 0.287 kJ/kg.K (Table A.5)
The specific heat Cv0 = 0.717 kJ/kg.K (Table A.5)