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A piston/cylinder setup contains 1 kg of ammonia at 20°C
Chapter 3, Problem 225HP(choose chapter or problem)
Problem 225HP
A piston/cylinder setup contains 1 kg of ammonia at 20°C with a volume of 0.1 m3, as shown in Fig. P3.225 Initially the piston rests on some stops with the top surface open to the atmosphere, P0, so that a pressure of 1400 kPa is required to lift it. To what temperature should the ammonia be heated to lift the piston? If it is heated to saturated vapor, find the final temperature, volume, and heat transfer, 1Q2.
FIGURE P3.225
Questions & Answers
QUESTION:
Problem 225HP
A piston/cylinder setup contains 1 kg of ammonia at 20°C with a volume of 0.1 m3, as shown in Fig. P3.225 Initially the piston rests on some stops with the top surface open to the atmosphere, P0, so that a pressure of 1400 kPa is required to lift it. To what temperature should the ammonia be heated to lift the piston? If it is heated to saturated vapor, find the final temperature, volume, and heat transfer, 1Q2.
FIGURE P3.225
ANSWER:
Solution
Step 1 of 4
In this problem, we have to find the final temperature, volume, and heat transfer of ammonia. The ammonia should be heated to saturated vapor.