QMC ENGINEERING PROGRAM for Windows
Sample Results for a Centrifugal Pump. Notice that
operating costs as well as applicable pump types are provided:
QMC Engineering Program: Centrifugal Pump
- Liquid Volume Flow
Friday, April 21, 2000 11:24:25 AM
Project Name:
Project Number:
Pump Specifications:
Pump Inlet Pressure = 0 PSIG
Pump Outlet Pressure = 100 PSIG
Pump Efficiency % = 60
NPSH Specifications:
Suction Vapor Pressure = 0 PSIA
NPSH Safety Factor = 0 ft
Process Data:
Volume Flow Rate = 2 cu-ft/hr
Fluid Temperature = 68 deg-F
Fluid Pressure = 0 PSIG
Fluid Density = 1 SG(H2O@Ref. Temp.)
Fluid Viscosity = 1 Centipoise
Optional Reference Temperature = 60 deg-F
Reference Density = 62.37 lb/cu-ft
Calculation Results:
Fluid Power = 1.454545E-02 Hp
Pump Power = 2.424242E-02 Hp
Motor Size (Hp) = 1
Head (ft) = 230.8802
Other Calculation Results:
Pump Flow Design Data:
Mass Flow(lb/hr) = 124.74
Volume Flow(cu-ft/hr) = 2
Volume Flow(GPM) = 0.2493333
Outlet Pressure(PSIA) = 114.696
Inlet Pressure(PSIA) = 14.696
Density(lb/cu-ft) = 62.37
Viscosity(cp) = 1
Pump Design Data:
Pump Flow(GPM) = 0.2493333
Pump Head(ft) = 230.8802
NPSHA(ft) = 33.90966
NPSHA( ft ) = 33.90966
Cavitation Parameter(sigma) = 6.808686
Single Suction Design:
Maximum Speed(rpm) = 239205.6
Required NPSH:
@ 1750 rpm = 4.815918E-02 ft
NPSHA - NPSHR = 33.8615 ft
@ 2850 rpm = 9.227587E-02 ft
NPSHA - NPSHR = 33.81738 ft
@ 3450 rpm = 0.1190475 ft
NPSHA - NPSHR = 33.79061 ft
Double Suction Design:
Maximum Speed(rpm) = 338287.8
Required NPSH:
@ 1750 rpm = 3.033838E-02 ft
NPSHA - NPSHR = 33.87932 ft
@ 2850 rpm = 5.813016E-02 ft
NPSHA - NPSHR = 33.85153 ft
@ 3450 rpm = 7.499526E-02 ft
NPSHA - NPSHR = 33.83466 ft
Pump Specific Speed:
@ 1750 rpm = 14.75327
@ 2850 rpm = 24.02675
@ 3450 rpm = 29.08501
Pump Efficiency @Specific Speed:
@ 1750 rpm = 1%
@ 2850 rpm = 6.207851%
@ 3450 rpm = 8.964195%
Note: Specific Speed based on GPM flow units.
Water Flow Basis Efficiency:
Centrifugal Pump Eff. = 1%
Note: Efficiency extrapolated.
Viscosity Efficiency Correction:
Eff. Ratio(Water Ref.) = 1.00016
Adjusted Efficiency = 1.00016%
Water Flow Temperature Rise:
User Efficiency(deg-F) = 0.1978408
Water Efficiency(deg-F) = 29.37936
Viscosity Efficiency(deg-F) = 29.37463
Motor Design Data:
Motor Size(Hp) = 1
3 Phase Motor Efficiency = 80%
Pumping System Power Consumption:
Head Rise(ft-lb/lb) = 230.8802
Power Usage(Hp) = 3.030303E-02
Power Usage(Kw) = 4.064902E-02
Pumping System Operating Cost:
Hourly Cost($/hr):
@ $0.100/Kw-hr = 4.064902E-03
@ $0.075/Kw-hr = 3.048676E-03
@ $0.050/Kw-hr = 2.032451E-03
Yearly Cost($/yr):
@ $0.100/Kw-hr = 35.59839
@ $0.075/Kw-hr = 26.6988
@ $0.050/Kw-hr = 17.7992
Note: Pumping System Power Consumption &
Costs
based on User Supplied & Motor Efficiency.
Single Stage Regenerative Turbine Design:
Volume Flow(cu-ft/sec) = 5.555556E-04
Head(ft-lb/lb) = 230.8802
Specific Diameter (Ds) = 5
Specific Speed (Ns) = 12
Design Efficiency = 50%
Speed(rpm) = 30154.88
Equivalent Impeller Diameter(in) = .3628
Impeller Tip Speed(ft/sec) = 47.73569
Note: Specific Speed and Diameter based on
cu-ft/sec flow units.
Single Stage Emission Pump Design:
Volume Flow(cu-ft/sec) = 5.555556E-04
Head(ft-lb/lb) = 230.8802
Specific Diameter (Ds) = 10
Specific Speed (Ns) = 12
Design Efficiency = 60%
Speed(rpm) = 30154.88
Equivalent Impeller Diameter(in) = .7256
Impeller Tip Speed(ft/sec) = 95.47139
Note: Specific Speed and Diameter based on
cu-ft/sec flow units.
Single Stage Radial Pump Design:
Volume Flow(cu-ft/sec) = 5.555556E-04
Head(ft-lb/lb) = 230.8802
Specific Diameter (Ds) = 2
Specific Speed (Ns) = 60
Design Efficiency = 80%
Speed(rpm) = 150774.4
Equivalent Impeller Diameter(in) = .1451
Impeller Tip Speed(ft/sec) = 95.47139
Note: Specific Speed and Diameter based on
cu-ft/sec flow units.
Single Stage Axial Pump Design:
Volume Flow(cu-ft/sec) = 5.555556E-04
Head(ft-lb/lb) = 230.8802
Specific Diameter (Ds) = 0.8
Specific Speed (Ns) = 300
Design Efficiency = 80%
Speed(rpm) = 753871.9
Equivalent Impeller Diameter(in) = .0580
Impeller Tip Speed(ft/sec) = 190.9428
Note: Specific Speed and Diameter based on
cu-ft/sec flow units.
Applicable Pump Types:
Pump Type - Metering-Diaphragm
Maximum Pump Head/Pressure - 600 lb/sq-in
Pump Type - Metering-Plunger
Maximum Pump Head/Pressure - 2500 lb/sq-in
Pump Type - Multicylinder-Plunger
Maximum Pump Head/Pressure - 10000 lb/sq-in
Pump Type - Screw Pump
Maximum Pump Head/Pressure - 600 lb/sq-in
Pump Type - Gear Pump
Maximum Pump Head/Pressure - 1500 lb/sq-in
Density Information:
Density H2O(STP-lb/cu-ft) = 62.37
Reference Temperature = 60 deg-F
Results Generated On:
Date = 4/21/2000
Time = 11:24:26 AM
Comments:
System Requirements
Available for: Win95/98/NT
Minimum CPU Requirements: 486
Minimum Ram: 8 MB
Version: 6
Published: 2000
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