Ammonia vapor is compressed inside a cylinder by an external force acting on the piston. The ammonia is initially at 30◦C, 500 kPa, and the final pressure is 1400 kPa. The following data have been measured for the process: 

Determine the work done by the ammonia by summing the area below the P–V process curve. As you plot it, P is the height and the change in volume is the base of a number of rectangles.

Transcribed Image Text:

Pressure, 500 653 802 945 1100 1248 1400 kPa Volume, L 1.25 1.08 0.96 0.84 0.72 0.60 0.50