Pressure Volume Diagram. Figure 4 shows the pressure volume diagram for an ideal reciprocating compressor. A convenient way to visualize these changes in the pressure and volume is by using a pressure volume diagram or pv diagram for short.
Active 3 years ago. Now the volume v stays constant along with the amount of gas n and the gas constant r. The pressure is given on the vertical axis and the volume is given on the horizontal axis as seen below.
U 3 2 nrt.
The pressure and volume of the gas at the extreme points in the cycle are given in the first two rows of the table below. Calculate the pressure exerted by the gas if it is compressed to a volume of 025 m³. Figure 4 shows the pressure volume diagram for an ideal reciprocating compressor. Viewed 1k times 0 1 begingroup why does pressure start off high in the pressure volume diagram starting from a compressed liquid to a super heated vapor.