Table 3 Suction flow rates (SFR) and pressures (SP) comparison of the ejector at a motive flow rate of 1.0 GPM at different drag reducing polymers concentrations (0, 50 and 100 ppm) and different suction valve capacities (SVC).

From: Optimizing jet pump efficiency via drag reducing polymers and enhanced efficiency definitions

Motive flow rate (GPM)

SVC (%)

SFR (GPM)

SP (kg/cm2)

0 (PPM)

50 (PPM)

100 (PPM)

0 (PPM)

50 (PPM)

100 (PPM)

1

100

2.2

2.81

3.01

 − 0.02

 − 0.08

 − 0.08

1

90

2.2

2.6

2.93

 − 0.02

 − 0.09

 − 0.09

1

80

2.1

2.4

2.86

 − 0.03

 − 0.1

 − 0.1

1

70

2

2.2

2.71

 − 0.03

 − 0.1

 − 0.1

1

60

1.8

1.91

2.4

 − 0.05

 − 0.12

 − 0.12

1

50

1.4

1.5

1.8

 − 0.11

 − 0.19

 − 0.19

1

40

0.8

1

1.1

 − 0.18

 − 0.25

 − 0.25

1

30

0

0

0.3

 − 0.22

 − 0.29

 − 0.29

1

20

0

0

0

 − 0.29

 − 0.32

 − 0.32

1

10

0

0

0

 − 0.3

 − 0.32

 − 0.32