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Ten kilograms ofwater in a piston/cylinder arrangement
Chapter 3, Problem 171HP(choose chapter or problem)
Problem 171HP
Ten kilograms ofwater in a piston/cylinder arrangement exists as saturated liquid/vapor at 100 kPa, with a quality of 50%. The system is now heated so that the volume triples. The mass of the piston is such that a cylinder pressure of 200 kPa will float it, as in Fig. P3.171. Find the final temperature and the heat transfer in the process.
FIGURE P3.171
Questions & Answers
QUESTION:
Problem 171HP
Ten kilograms ofwater in a piston/cylinder arrangement exists as saturated liquid/vapor at 100 kPa, with a quality of 50%. The system is now heated so that the volume triples. The mass of the piston is such that a cylinder pressure of 200 kPa will float it, as in Fig. P3.171. Find the final temperature and the heat transfer in the process.
FIGURE P3.171
ANSWER:
Solution 171 HP:
Step 1 of 3:-
Here we have to find the final temperature and the heat transfer through the process.
The mass of water is,
.
The state of water is saturated liquid/vapour and the pressure is,
.
The quality is 50%.
The initial volume is .
The final volume is .
200 kPa of cylinder pressure will make the the piston float.