online_pump_pipe_system:  Operating discharge and head in a pump-pipe system

Definition sketch of a pump-pipe system
  
System head-discharge relation:
hp = a + bQ2
 Pump head-discharge relation:
H = c - dQ2


INPUT DATA: [How to use] [Table of loss coefficients]

Select:  

Pipe diameter D :    
   
Warning: Undefined variable $pipediameterunits in /var/www/html/ponce/onlinepumppipesystem.php on line 491
        
Pipe length L :    
   
Warning: Undefined variable $pipelengthunits in /var/www/html/ponce/onlinepumppipesystem.php on line 500

 Friction factor f :    

Elevation E1 :    

   
Warning: Undefined variable $elevation1units in /var/www/html/ponce/onlinepumppipesystem.php on line 514
        

Elevation E2 :    

   
Warning: Undefined variable $elevation2units in /var/www/html/ponce/onlinepumppipesystem.php on line 522
 Entrance loss coefficient Ke :    
   [Leave blank to set default Ke = 0.5]
 Exit loss coefficient KE :    
   [Leave blank to set default KE = 1]
 Sum of bend loss coefficient(s) [zero or more bends] Kb :    

Select type of pump head-discharge relation H vs Q:    

If type (of H vs Q) = 1, enter c and d  in   H = c - dQ2:

c :    

   
Warning: Undefined variable $lengthunits in /var/www/html/ponce/onlinepumppipesystem.php on line 576
    

d :    

   
Warning: Undefined variable $lengthunits in /var/www/html/ponce/onlinepumppipesystem.php on line 584


Else, if type (of H vs Q) = 2, enter N and H and Q arrays below:

Number of N  values in pump head-discharge relation H vs Q :    

   
Warning: Undefined variable $lengthunits in /var/www/html/ponce/onlinepumppipesystem.php on line 594

N  paired values of H and Q (separate each value with a comma; string length
75 characters, maximum 150).

H :    

Q :    


OUTPUT:


The system operating point is at the intersection of system and pump head-discharge relations.
Type of head-discharge relation:
Warning: Undefined variable $inputheaddischargereset in /var/www/html/ponce/onlinepumppipesystem.php on line 634

Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/ponce/onlinepumppipesystem.php on line 634
0

Operating discharge:

Q = 
Warning: Undefined variable $discharge in /var/www/html/ponce/onlinepumppipesystem.php on line 647

Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/ponce/onlinepumppipesystem.php on line 647
0  
Warning: Undefined variable $dischargeunits in /var/www/html/ponce/onlinepumppipesystem.php on line 647

Operating head:

h = 
Warning: Undefined variable $head in /var/www/html/ponce/onlinepumppipesystem.php on line 651

Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/ponce/onlinepumppipesystem.php on line 651
0  
Warning: Undefined variable $headunits in /var/www/html/ponce/onlinepumppipesystem.php on line 651


[Click on figure to expand]

Pump on Wikipedia



Sample
Input-Output


            

  Your request was processed at  08:06:58 am on April 2nd, 2025   [ 250402  08:06:58 ].


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