Download - Slurry Pump Calculations
Typical Slurry Pump Calculation1. First the user must enter design criteria or physical properties on the “Input Criteria” tap. Only values highlighted in blue need to be entered (NB: cells in blue font colour only).2. The user must also enter the number of fittings in both the suction and the discharge side. If the fitting unique to your installation is not listed, just assign any fitting closest to yours in terms of head loss.3. Then in the “CALCS” tab, the user must also enter design criteria only on the cell highlighted in blue.4. In the “CALCS” tab, the user will need to determine and enter various factors (pipe friction factor, settling velocity factor, and slurry pump efficiency), in the cell shaded with dark blue fill by using the charts provided in various tabs.
First the user must enter design criteria or physical properties on the “Input Criteria” tap. Only values highlighted in blue need to be entered (NB: cells in blue font colour only).The user must also enter the number of fittings in both the suction and the discharge side. If the fitting unique to your installation is not listed, just assign any fitting closest to yours in terms of head loss.Then in the “CALCS” tab, the user must also enter design criteria only on the cell highlighted in blue.In the “CALCS” tab, the user will need to determine and enter various factors (pipe friction factor, settling velocity factor, and slurry pump efficiency), in the cell shaded with dark blue fill by using the charts provided in various tabs.
The user must also enter the number of fittings in both the suction and the discharge side. If the fitting unique to your installation is not listed, just assign any fitting closest to yours in terms of head loss.
In the “CALCS” tab, the user will need to determine and enter various factors (pipe friction factor, settling velocity factor, and slurry pump efficiency), in the cell shaded with dark blue fill by using the charts provided in various tabs.
Item Criteria Symbol Value Units
1 Ambiet Pressure 101,500 1015
2 Reference Pressure 100,000 1
3 Reference Temperature 5
4 Slurry Temperature T 30
5 Slurry Medium N/A Water N/A6 Slurry pH Level pH 7 N/A
7 Desired Flowrate V 1060
8 Dry Solids Density 6800
9 Slurry Density 3200
10 Density of water at ambient conditions 994.7
11 Denisity of water at Reference conditions 1000
12 Volumetric temperature expansion coefficient b 0.000214
13 Bulk modulus fluid elasticity e 2.15E+09
14 81% %15 Static Head, z z 30 m16 Pipe length, L L 41 m
17 Discharge Pipe Fittings 23.06 m
18 Suction Pipe Fittings 1.47 m19 Pipeline Material N/A HDPE N/A20 Pipeline Diameter (OD) OD 315 mm21 Pipeline Thickness t 17.5 mm22 Discharge Pipeline Diameter (ID/NB) ID 280 mm 78
23 Suction Pipe Length 1.5 m
23 Suction Pipe Diameter 250 mm24 Suction Pipe Material N/A Steel N/A25 # Pipeline fittings in Suction line N/A 2 N/A26 Types of pipe fittings N/A Knife Gate N/A27 Sump Design N/A Conical N/A
28 Operating Liquid level above CL 3.7 m29 Sump Agitation N/A Yes N/A
30 0.02 mm
P1 N/m2
P0 N/m2
T0oCoC
m3/h
rs kg/m3
rsl kg/m3
r1 kg/m3
r0 kg/m3
m3/m3 oC
N/m2
Concentration of Solids, Cw CW
LD,F
LD,S
LS
Ds
CL
Slurry Particle size, d50 d50
# Fittings # FittingsID/NB (mm)
mb ID/NB Suction Discharge Suction Discharge 25 32
bar 0 3 0.00 17.29 0.52 0.73
0 0 0.00 0.00 0.7 0.91
0 0 0.00 0.00 0.26 0.37
0 3 0.00 5.76 0.17 0.24Elbow 0 0 0.00 0.00 0.82 1.13
Tee 0 0 0.00 0.00 1.77 2.38
Rubber hose 0 0 0.00 0.00 0.3 0.4
0 0 0.00 0.00 2.56 3.29
0 0 0.00 0.00
0 0 0.00 0.00 0.37 0.49
Taylor Valve Ball type 2 0 1.47 0.00
Enter number of pipe fittings
Equiv Length
Equiv Length
90o Long
90o Short
45o Short
30o Short
Diaphram Valve full Open
Full Bore Valve Round way
Plug-lub Valve Rec way
ID/NB (mm)
40 50 65 80 90 100 115 125 150
0.85 1.07 1.28 1.55 1.83 2.13 2.41 2.71 3.35
1.1 1.4 1.65 2.07 2.44 2.77 3.05 3.66 4.27
0.43 0.54 0.64 0.78 0.92 1.07 1.21 1.36 1.68
0.28 0.36 0.43 0.52 0.61 0.71 0.80 0.90 1.121.31 1.68 1.98 2.47 2.9 3.35 3.66 4.27 4.88
2.74 3.35 4.27 5.18 5.79 6.71 7.32 8.23 10.06
0.49 0.55 0.7 0.85 1.01 1.16 1.28 1.43 1.55
3.44 3.66 4.6 4.88 7.62 13.11 18.29
1.19 1.43 1.52 1.92 2.19 3.05 3.11
0.58 0.73 0.85 1.04 1.22 1.4 1.58 1.77 2.13
0.2 0.23 0.3 0.37
ID/NB (mm)
200 250 300 350 400 450 500
4.27 5.18 6.1 7.01 8.23 9.14 10.36
5.49 6.71 7.92 9.45 10.67 12.19 13.11
2.14 2.59 3.05 3.51 4.12 4.57 5.18
1.42 1.73 2.03 2.34 2.74 3.05 3.456.4 7.92 9.75 10.97 12.8 14.02 15.85
13.11 17.07 20.12 23.16 26.52 30.48 33.53
2.41 2.99 3.35 4.27 4.88 5.49 6.1
19.81 21.34 28.96 28.96
7.92 10.67 15.85
2.74 3.47 4.08 4.88 5.49 6.22 7.32
0.82 0.61 0.76 0.91 1.04 1.16 1.25
Slurry Pump Calculations Q [%] Q=0% Q=10% Q=20% Q=30% Q=40% Q=50% Q=60% Q=70%DMS CM Pump Symbol Units Value Comments Q [l/s] 0.00 13.18 26.37 39.55 52.73 65.91 79.10 92.28
1 Normal Operating Temperature T 30 V [m/s] 0.00 0.21 0.43 0.64 0.86 1.07 1.28 1.502 Normal Operating Pressure mbar 1015 0.00 0.41 0.81 1.22 1.63 2.04 2.44 2.853 Normal Operating Pressure m 10.58 0.00 0.27 0.54 0.81 1.07 1.34 1.61 1.884 Vapour Pressure m 1.43 0.00 0.01 0.03 0.08 0.14 0.21 0.31 0.425 Specific Gravity of Solids S 6.8 0.00 0.00 0.00 0.01 0.02 0.03 0.04 0.056 Average Particle Size mm 0.02 0.00 0.00 0.00 0.01 0.02 0.02 0.04 0.057 Concentration of Solids by weight % 81% 0.00 0.00 0.01 0.02 0.04 0.06 0.08 0.118 Static Discharge Head m 30 0.000 0.002 0.007 0.017 0.029 0.046 0.066 0.0909 Suction Static Head m 3.7 26.30 26.31 26.36 26.43 26.54 26.67 26.83 27.02
10 Length of Pipeline L m 41 42.42 42.44 42.51 42.63 42.80 43.01 43.28 43.5911 Discharge Pipe Fittings Equiv. Length m 23.0612 Weight of solids in Slurry tons/h 1230 Solid dry tons to be transfered13 Weight of volume of Water equal to solids volume tons/h 18114 Weight of water in slurry tons/h 294 Q [%] Q=80% Q=90% Q=100% Q=110% Q=120% Q=130% Q=140% Q=150%15 Total weight of equal volume of water tons/h 475 Q [l/s] 105.46 118.65 131.83 145.01 158.20 171.38 184.56 197.7416 Total weigh of slurry mixture tons/h 1524 V [m/s] 1.71 1.93 2.14 2.35 2.57 2.78 3.00 3.2117 Specific gravity of slurry mixture 3.21 3.26 3.67 4.07 4.48 4.89 5.29 5.70 6.1118 Concentration of Solids by volume 38.1% 2.15 2.42 2.69 2.95 3.22 3.49 3.76 4.03
19 Quantity of Slury Q' 474.59 Equals 733.95 m3/h with the safety factor of 55% 0.55 0.69 0.85 1.03 1.23 1.44 1.68 1.9220 Quantity of Slury Q l/s 131.83 Equals 203.87 m3/h with the safety factor of 55% 0.07 0.08 0.10 0.13 0.15 0.18 0.21 0.2421 Pipeline size d mm 280 Desired pipe size 0.06 0.08 0.10 0.12 0.14 0.17 0.19 0.22
22 Gravitational Acceleration g 9.81 0.15 0.19 0.23 0.28 0.34 0.39 0.46 0.5323 Limiting Settling Velocity Factor 0.76 0.1176 0.1488 0.1837 0.2223 0.2646 0.3105 0.3601 0.413424 Settling Velocity m/s 1.88 27.24 27.49 27.77 28.08 28.42 28.79 29.19 29.62
25 Slurry Velocity V m/s 2.14 43.94 44.35 44.80 45.30 45.85 46.44 47.08 47.7726 Total Equivalent length of a Discharge pipe m 64.0627 Darcay Friction Factor f 0.016
28 Discharge Pipeline Friction Head Loss 0.85 FLOW Velocity PIPE HEAD MP CURVE RECOMMENDED VEL.
29 Pump Discharge Diameter mm 203 As specified on the Pump Q [l/s] V [m/s] H [m] H [m] 25NB 1.4 m/s
30 Pump Nozzle Upstream Velocity m/s 4.07 0.00 0 0.00 42.42 44.5 40NB 1.6 m/s31 Pump nozzle size - Pipe size ratio 0.73 13.18 47 0.21 42.44 44.5 50NB32 Loss in pipe enlargement (Ke*(V-V1)/2g) m 0.10 26.37 95 0.43 42.51 44.5 80NB 1.9 m/s
33 m 0.10 39.55 142 0.64 42.63 44.3 100NB 2.0 m/s34 Loss at pipe discharge m 0.23 52.73 190 0.86 42.80 44.1 150NB 2.2 m/s35 Pump Suction diameter mm 250 As specified on the Pump 65.91 237 1.07 43.01 44.0 200NB 2.4 m/s
36 Slurry Velocity at Suction m/s 2.69 79.10 285 1.28 43.28 43.8 300NB 2.6 m/s37 Loss of head at entrance to suction pipe m 0.18 92.28 332 1.50 43.59 43.538 Suction Pipe Lenth Ls m 2.00 105.46 380 1.71 43.94 42.939 Suction pipe fittigs length Equiv. Length m 1.47 118.65 427 1.93 44.35 42.640 Total Equivalent length of a Suction pipe m 3.47 131.83 475 2.14 44.80 42.541 Suction Pipeline Friction Head Loss m 0.08 145.01 522 2.35 45.30 42.142 Total dynamic head on the pump m 27.86 158.20 570 2.57 45.85 42.043 Slurry Pump Derating Efficiency ( = HR*ER) ER*HR 0.62 171.38 617 2.78 46.44 41.544 Equivalent water total head dynamic m 44.93 184.56 664 3.00 47.08 41.0
45 Pump Efficiency em 62.04% From Manufacturers Curve 197.74 712 3.21 47.77 40.0 from the pump cure46 Required Power P kW 300.51 Calculated47 Installed power P kW 400.00 From Manufacturers Curve48 Installed Pump Speed n r/min 703.94 From Manufacturers Curve 6 65 3049 Nett Positive Suction Head NPSHa m 3.43 Calculated 0.14 1.15 0.5549 Nett Positive Suction Head NPSHr m 3.32 From Manufacturers Curve K 0.42 0.0660849249 Nett Positive Suction Head Difference NPSHa -NPSHr m 0.11 Installation Fine
oCHatm Vp [m/s]Hatm Vi [m/s]Hvap Hf [---]
Lc [m]
d50 HL [m]
Cw Le [m]
Zd Li [m]
Zs Hm [m]
Hw [m]
Sm Vp [m/s]Cv Vi [m/s]
m3/h Hf [---]
Lc [m]
HL [m]
m/s2 Le [m]
FL Particle size d50 = 20mm Li [m]
VL Hm [m]
Hw [m]
LD
Hf,D
Dpump Q [m3/hr]
Vpump
D1/D2
Le
Loss in pipe contraction (hL = K*V22/2g) hL
Ld
Dsuction
Hi
Li
LS
Hf,S
Hm
Hw
Intrapolation of Ke Factor
0.00 50.00 100.00 150.00 200.00 250.0036.00
38.00
40.00
42.00
44.00
46.00
48.00
50.00
Circulating Medium Pump (140-PCB-42)PUMP SELECTION GRAPH : (10/8 F/G AH Metal)
IMPELLER SIZE : (686) MM SPEED : 703 (REV/MIN) RPM
Q [l/s]
Head
[m]
Imperial Units - BG SI Units VAPOUR PRESSURES [kPa]
TEMP
Acetone 1.34 0.92 5Carbon Tetrachloride 1.91 1.32 10
Ethyl Alcohol 1.54 1.06 15Gasoline 1.9 1.3 20Glycerin 6.31 4.35 25Mercury 41.4 28.5 30
Paraffin Oil 2.41 1.66 35Petrol 1.55 - 2.16 1.07 - 1.49 40
SAE 30 Oil 2.2 1.5 45Seawater 3.39 2.34 50
Water 3.12 2.15 60Liquid 70
80
Acetic acid 0.0011 0.00061 90Acetone 0.00143 0.00079 100
Ethyl (ethanol) 0.00109 0.00061
Methyl (methanol) 0.00118 0.00066
Ammonia 0.00245 0.00136
Aniline 0.00085 0.00047
Benzene 0.00125 0.00069
Bromine 0.0011 0.00061
Carbon disulfide 0.00119 0.00066
Carbon tetrachloride 0.00122 0.00068
Chloroform 0.00127 0.00071
Ether 0.0016 0.00089
Ethyl acetate 0.00138 0.00077
Ethylene glycol 0.00057 0.00032
Freon refrigerant R-12 0.0026 0.00144
n-Heptane 0.00124 0.00069
Isobutyl alcohol 0.00094 0.00052
Gasoline 0.001 0.00056
Glycerine (glycerol) 0.0005 0.00028
Kerosene 0.001 0.00056
Mercury 0.00018 0.0001
Methyl alcohol 0.00119 0.00066
Methyl iodide 0.0012 0.00067
n-Octane 0.00114 0.00063
Oil (unused engine oil) 0.0007 0.00039
Olive oil 0.0007
Paraffin oil 0.000764 0.00042
Petroleum 0.001 0.00056
Bulk Modulus - E
(105 psi, lbf/in2) (109 Pa, N/m2)
Volumetric Coefficient of Expansion, b
(m3/m3K, m3/m3oC) (1/oF)
n-Pentane 0.00158 0.00088
Phenol 0.0009 0.0005
Sulphuric acid 0.00055 0.00031
Toluene 0.00108 0.0006
Trichloroethylene 0.00117 0.00065
Turpentine 0.001 0.00056
Water 0.000214 0.00012
VAPOUR PRESSURES [kPa] LIQUID DENSITY @ 1bar
H2O TEMP SO2 H2SO4 TEMP H2O H2SO4
0.87 -50 11.57 5 1000.01.23 -40 21.57 10 999.71.70 -30 38.05 15 999.22.34 -20 63.55 0.001 20 998.3 1840.03.17 -10 101.4 25 997.14.24 0 155.4 30 995.75.62 10 230.2 35 994.07.38 20 330.5 40 992.39.58 30 416.9 45 990.2
12.34 40 841.7 50 988.019.92 50 60 983.231.16 70 977.7
47.36 80 971.670.11 90 965.2
101.33 100 958.1
Surface (feet)
Copper, Lead, Brass, Aluminum (new) 0.001 - 0.002
PVC and Plastic Pipes 0.0015 - 0.007
Epoxy, Vinyl Ester and Isophthalic pipe 0.005
Stainless steel 0.015
Steel commercial pipe 0.045 - 0.09
Stretched steel 0.015
Weld steel 0.045
Galvanized steel 0.15
Rusted steel (corrosion) 0.15 - 4
New cast iron 0.25 - 0.8
Worn cast iron 0.8 - 1.5
Rusty cast iron 1.5 - 2.5
Sheet or asphalted cast iron 0.01 - 0.015
Smoothed cement 0.3
Ordinary concrete 0.3 - 1
Coarse concrete 0.3 - 5
Well planed wood 0.18 - 0.9
Ordinary wood 5
Absolute Roughness - k
10-3 (m)
3.33 - 6.7 10-6
0.5 - 2.33 10-5
1.7 10-5
5 10-5
1.5 - 3 10-4
5 10-5
1.5 10-4
5 10-4
5 - 133 10-4
8 - 27 10-4
2.7 - 5 10-3
5 - 8.3 10-3
3.33 - 5 10-5
1 10-3
1 - 3.33 10-3
1 - 16.7 10-3
6 - 30 10-4
16.7 10-3
0.0015
62
2.419355E-05