#5 Pump System Design. This PP is annotated (with a pointer) and narrated (using PP versions 2007 and later). The speaker icon on each slide indicates this capability. - PowerPoint PPT Presentation
Pump System Design
This PP is annotated (with a pointer) and narrated (using PP
versions 2007 and later). The speaker icon on each slide indicates
this capability.The narration and annotation functions on your
computer must be turned on before you can hear the narration and
see the pointer.The annotation and narration can be turned on by
going to the slide show tab and clicking the three boxes shown
below.Then click on the start slide show (either from beginning or
from a current slide) to start the lecture.You can replay slides
individually or let them run through sequentially.DONT HAVE PP? You
can download a MS 2010 PP reader that allows you to view this PP on
any operating system:
http://blogs.office.com/b/microsoft-powerpoint/archive/2010/05/13/powerpoint-viewer-available-for-download.aspx
#5 Pump System Design
#5 Pump System DesignSteve HubbsMarch 2014
Static WaterLevel~140SYSTEM HEAD = 140
Static WaterLevel~140Pump pressure = 54 psiPump OFF~15Pressure
gauge reads:(140-15)/2.31 = 54 psiSYSTEM STATIC HEAD = 140
Static WaterLevel~140Hydraulic Grade Line @ 150 gpmPump pressure
= 72 psiPump ON150 gpm42f = 0.002083 (100/c)1.852 q1.852/dh4.8655
=> 42 pipe friction loss=HfL = total line length (3000 feet)c=
roughness of pipe wall (140 for PVC)q= flow through the pipe (150
gpm)dh = pipe diameter (4 inches)520Pressure gauge
reads:(187-20)/2.31 = 72 psiSYSTEM HEAD = 42+140+5= 187
Static WaterLevel~140Hydraulic Grade Line @ 250 gpmPump pressure
= 101 psiPump ON250 gpm109Hf = 10910SYSTEM HEAD=109+140+10 =
259Pressure gauge reads:(259-25)/2.31 = 101 psi25
L = total line length (3000 feet)c= roughness of pipe wall (140
for PVC)q= flow through the pipe (250 gpm)dh = pipe diameter (4
inches)SANTIAGO NEW WELL-15 HPLine length = 3000Line
Size6inchgpmHfdrdwnTSH ft10032516715062817425015351903302540205Line
Size4inchgpmHfdrdwnTSH
ft100202518515042282102501093528333018240362
8Static WaterLevel~150Hydraulic Grade Line @ 175 gpmPump ON56NEW
SANTIAGO WELL4 inch Supply LineSystem Head = 236~30Pressure gauge
reads:(226-45)/2.31 = 78 psiHf = 56 ~15L = total line length (3000
feet)c= roughness of pipe wall (140 for PVC)q= flow through the
pipe (175 gpm)dh = pipe diameter (4 inches)f = 0.002083
(100/c)1.852 q1.852/dh4.8655
Static WaterLevel~150Hydraulic Grade Line @ 240 gpmPump ON13NEW
SANTIAGO WELL6 inch Supply LineSystem Head = 196~33Pressure gauge
reads:(196-48)/2.31 = 64 psiHf = 13 ~15L = total line length (3000
feet)c= roughness of pipe wall (140 for PVC)q= flow through the
pipe (240 gpm)dh = pipe diameter (6 inches)f = 0.002083
(100/c)1.852 q1.852/dh4.8655
REFERENCESPump Motor and Head Loss calculations Total pumping
head (system performance curve)Hazen-Williams
formulashttp://www.engineeringtoolbox.com/hazen-williams-water-d_797.htmlAdd
~10% for fittings or calculate separately if pipe is long and
fittings are few.System Curves and Pump Performance Curves (from
Engineering in a
Box)http://www.engineeringtoolbox.com/pump-system-curves-d_635.htmlMotor
horsepower neededSizing the motor:
http://www.engineeringtoolbox.com/pumps-power-d_505.htmlPump
Efficiency (typically 60% efficient, so make sure to include in
motor
sizing.http://www.engineeringtoolbox.com/best-efficiency-point-bep-d_311.html
Send comments and corrections to: [email protected]
