# How to figure out the sufficient pressure pls?

#### kinki_ania

hi good day everyone,

Typically i have a 300mm height, 80mm diameter cylinder filled with 400ml hydraulic oil. It connected to 2m length pipe via 12mm diameter exit. Density of hydraulic oil is assumed to be 900kg/m^3. My task is to release the 400ml hydraulic oil in 10seconds. So in this case how could i figure out and measure the desired vertically pressure pls?! thx in advanced kinki_ania@hotmail.com

#### stewartcs

hi good day everyone,

Typically i have a 300mm height, 80mm diameter cylinder filled with 400ml hydraulic oil. It connected to 2m length pipe via 12mm diameter exit. Density of hydraulic oil is assumed to be 900kg/m^3. My task is to release the 400ml hydraulic oil in 10seconds. So in this case how could i figure out and measure the desired vertically pressure pls?! thx in advanced kinki_ania@hotmail.com
Use Bernoulli's Principle and account for the head losses (pipe friction and minor losses) and determine the required head needed for the desired flow rate. It may take some iteration.

CS

#### kinki_ania

okok.. thank for guiding me a bright way ahead.. let me try 1st..

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