Page 207 - Compression Machinery for Oil and Gas
P. 207

120
                                                                   Suction
               100
                                                                   Discharge
              Valve position (%)  60
                80
                40
                20
                0
               –20
                 0      0.05     0.1    0.15     0.2    0.25     0.3    0.35
                                            Time (s)

                0.5
                                                                   Suction
                0.4                                                Discharge
              Mass flow (kg/s)  0.3

                0.2
                0.1
                 0
               –0.1
                 0      0.05     0.1    0.15     0.2    0.25     0.3    0.35
                                           Time (s)
            FIG. 5.15 Baseline valve performance with air. (Courtesy of SwRI.)


                4
               3.5
                3
              P/P s  2.5
                2
               1.5
                1
               0.5
                 0      45     90     135    180    225    270    315    360
                                        Crank angle (degrees)
                              Mass flow: 6.24e–03 kg/s, Power: 106.1 kW, PV Eff: 85.0%
                4
               3.5
                3
              P /P s  2.5
                2
               1.5
                1
               0.5
                 1      1.5    2      2.5    3      3.5     4     4.5     5
                                            V / V 0
            FIG. 5.16 Baseline compressor performance for 600rpm. (Courtesy of SwRI.)
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