normal flow rate versus maximum flow rate in pipeline
normal flow rate versus maximum flow rate in pipeline
(OP)
Hi everyone;
we are going to transfer chemical from storage tank trough pump and pipe line to another plant.maximum flowrate is dictated by downstream plant and it is clear. i need to define normal flowrate because i need it for calculation and also to put it in equipment and instrumentation datasheet.i am wondering if anybody could give me an advice to define normal flowrate.
best regards
we are going to transfer chemical from storage tank trough pump and pipe line to another plant.maximum flowrate is dictated by downstream plant and it is clear. i need to define normal flowrate because i need it for calculation and also to put it in equipment and instrumentation datasheet.i am wondering if anybody could give me an advice to define normal flowrate.
best regards





RE: normal flow rate versus maximum flow rate in pipeline
"Normal flow rate" dhas everything to do with your piping and pumps. You need to determine the nominal flow based on plant input and the capacity of the processing equipment and then design your take-away pipe to accommodate that flow rate without approaching erosional velocity in the pipe, running away from your suction head on the pump, and being in an economical region of the pump curve. You need to do this while being able to accommodate changing needs of the downstream plant and changing plant inflow.
What I'm trying to say is that you need to define "normal" based on the realities of the upstream flows and processes. You also need to define a "maximum" based on physical limitations of the selected equipment that should be greater than the "maximum" defined by the boundary conditions.
David Simpson, PE
MuleShoe Engineering
In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual. Galileo Galilei, Italian Physicist
RE: normal flow rate versus maximum flow rate in pipeline
Dejan IVANOVIC
Process Engineer, MSChE
RE: normal flow rate versus maximum flow rate in pipeline
The normal flowrate is a balance between how much you need to transfer in a certain time period.
If you need a lot in one go ( say 1 hour) then it is quite big, but if you can spread that out "normally" over say 8 hours it is much smaller.
SO if your maximum is say 100m3/hr, your "normal" could be anywhere from 1 to 99 m3/hr.
Each system is different - there is no magic rule.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: normal flow rate versus maximum flow rate in pipeline