A piston/cylinder assembly contains 1 kg of liquid water at 20◦C and 300 kPa. Initially the piston floats, similar to the setup in Problem 3.173, with a maximum enclosed volume of 0.002 m³ if the piston touches the stops. Now heat is added so that a final pressure of 600 kPa is reached. Find the final volume and the heat transfer in the process.

Data from problem 3.173

A vertical cylinder fitted with a piston contains 5 kg of R-410a at 10◦C, as shown in Fig. P3.173. Heat is transferred to the system, causing the piston to rise until it reaches a set of stops, at which point the volume has doubled. Additional heat is transferred until the temperature inside reaches 50◦C, at which point the pressure inside the cylinder is 1.4 MPa.

Transcribed Image Text:

R-410a FIGURE P3.173