pump head and flow rate relation

eaaaazizo

i need some help becoase i become confused
according to pump characteristic curve if the flow rate increased the head will decreased
the question is how i can increase the flow rate and what is the relation of RPM with head and flow rate

russ_watters

Have a look at the pump affinity laws: http://www.engineeringtoolbox.com/af...aws-d_408.html

eaaaazizo

Quote by russ_watters

Have a look at the pump affinity laws: http://www.engineeringtoolbox.com/af...aws-d_408.html

thank u for ur answer but this link is speake about changing rpms it is available to change the pump head by change pump capacity with constant RPM and how ?

russ_watters

By combining the first and second equations, you get an equation that tells you that by lowering the pressure resistance in the system, you'll get an increase in flow.

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eaaaazizo	pump head and flow rate relation i need some help becoase i become confused according to pump characteristic curve if the flow rate increased the head will decreased the question is how i can increase the flow rate and what is the relation of RPM with head and flow rate

russ_watters Mentor	Have a look at the pump affinity laws: http://www.engineeringtoolbox.com/af...aws-d_408.html

russ_watters Mentor	pump head and flow rate relation By combining the first and second equations, you get an equation that tells you that by lowering the pressure resistance in the system, you'll get an increase in flow.