Page 203 - Compression Machinery for Oil and Gas

192 SECTION II Types of Equipment

0.1
0.08
Piston position (m) 0.06

0.04
0.02

0
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35
Time (s)
–3
10
1
0.8
Volume (m 3 ) 0.6

0.4
0.2

0
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35
Time (s)
FIG. 5.9 Position and volume vs. time. (Courtesy of SwRI.)

8000
7000
Pressure (kPa) 5000
6000

4000
3000
2000
1000
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35
Time (s)
8000
7000
Pressure (kPa) 5000
6000

4000
3000
2000
1000
0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1
Piston position (m)
FIG. 5.10 Pressure vs. time and piston position. (Courtesy of SwRI.)