Pumping Light Oils - Delivery Flow Velocities

[Esam]

As a rule of thumb the following velocities can be used in design of piping and pumping systems for light oil transport:

Pipe Dimension		Light Oils
inches	mm	m/s	ft/s
1	25	1	3.5
2	50	1.1	3.6
3	75	1.15	3.8
4	100	1.25	4
6	150	1.5	4.7
8	200	1.75	5.5
10	250	2	6.5
12	300	2	6.5

[Esam]

[h=Recommended flow velocity required on the delivery side of the pump in systems with boiling liquids]2[/h]
As a rule of thumb the following velocities can be used in design of piping and pumping systems for boiling liquids:

Pipe Dimensions		Boiling Liquids
inches	mm	m/s	ft/s
1	25	1	3.5
2	50	1.1	3.6
3	75	1.15	3.8
4	100	1.25	4
6	150	1.5	4.7
8	200	1.75	5.5
10	250	2	6.5
12	300	2	6.5

[Esam]

The energy imparted to the water by a pump is called water horsepower and can be calculated as
P_whp = q h sg / 3960 (1)
where
P_whp = water horsepower (hp)
q = flow (gal/min)
h = head (ft)
sg = specific gravity
The table below can be used to estimate the power requirements when pumping water.

Volume Flow (gpm)	Horsepower Required to lift water at 60oF (hp)
Height (ft)
5	10	15	20	25	30	35	40	50
5	0.01	0.01	0.02	0.03	0.03	0.04	0.04	0.05	0.06
10	0.011	0.03	0.04	0.05	0.06	0.08	0.09	0.10	0.13
15	0.02	0.04	0.06	0.08	0.10	0.11	0.13	0.15	0.19
20	0.03	0.05	0.08	0.10	0.13	0.15	0.18	0.20	0.25
25	0.03	0.06	0.10	0.13	0.16	0.19	0.22	0.25	0.32
30	0.04	0.08	0.11	0.15	0.19	0.23	0.27	0.30	0.38
35	0.04	0.09	0.13	0.18	0.22	0.27	0.31	0.35	0.44
40	0.05	0.10	0.15	0.20	0.25	0.30	0.35	0.40	0.51
45	0.06	0.11	0.17	0.23	0.28	0.34	0.40	0.46	0.57
50	0.06	0.13	0.19	0.25	0.32	0.38	0.44	0.50	0.63
60	0.08	0.15	0.23	0.30	0.38	0.46	0.53	0.61	0.76
70	0.09	0.18	0.27	0.35	0.44	0.53	0.62	0.71	0.88
80	0.10	0.20	0.30	0.40	0.50	0.61	0.71	0.81	1.0
90	0.11	0.23	0.34	0.46	0.57	0.68	0.80	0.91	1.1
100	0.13	0.25	0.38	0.50	0.63	0.76	0.88	1.00	1.3

Note! Individual pump curves should always be used for exact calculations.