hi, can someone please tell me or show the proof for why if you double the height you want to pump something to the energy required for the pump increases by 4 times?
Thanks.
|
Simple Fluids Problem
Started by MaterialBalance14, Feb 05 2010 01:47 PM
2 replies to this topic
Share this topic:
#1
Posted 05 February 2010 - 01:47 PM
#2
Posted 05 February 2010 - 02:18 PM
Brake horsepower = GPM x Head (ft) x s.g./3960/Efficiency
Assume constant flow, GPM.
If the destination (end of the pipe) is 2X the height away, you will have 2X the hydralic head to overcome AND the frictional pressure drop will double because the pipe is 2X as long. That's the simplistic view. However, what if the pipe is large for the flow and pressure drop is essentially nil compared to the hydraulic head. Then, it doesn't quite work out that way.
Assume constant flow, GPM.
If the destination (end of the pipe) is 2X the height away, you will have 2X the hydralic head to overcome AND the frictional pressure drop will double because the pipe is 2X as long. That's the simplistic view. However, what if the pipe is large for the flow and pressure drop is essentially nil compared to the hydraulic head. Then, it doesn't quite work out that way.
#3
Posted 10 February 2010 - 10:57 PM
Hi
Can you tell us more where did you get the information from? I am curious since I do not believe the statement is true.
Can you tell us more where did you get the information from? I am curious since I do not believe the statement is true.
Similar Topics
Problem With Writing Offshore Plant Design BasisStarted by Guest_Doneisbetterthenperfect_* , 01 Dec 2023 |
|
|
||
Problem With Writing Offshore Plant Design PfdStarted by Guest_Doneisbetterthenperfect_* , 06 Dec 2023 |
|
|
||
Inquiry On Calculating Residence Time Of Fluids In SeperatorStarted by Guest_MJA99_* , 07 Oct 2023 |
|
|
||
Crude Oil Stripping (H2S Conc. Specified In Gas Phase Problem)Started by Guest_nabeelsp1036_* , 16 Jun 2023 |
|
|
||
Aspen Hysys Rankine Cycle ProblemStarted by Guest_ELLEPI_* , 17 Apr 2023 |
|
|