The piston/cylinder shown in Fig. P3.169 contains 18 ft 3 of R-410a at 300 psia, 300 F.

Question:

The piston/cylinder shown in Fig. P3.169 contains 18 ft³ of R-410a at 300 psia, 300 F. The piston mass and atmosphere gives a pressure of 70 psia that will float the piston. The whole setup cools in a freezer maintained at 0 F. Find the heat transfer and show the P–v diagram for the process when T₂ = 0 F.