Hydraulic Defaults

to use hydraulics in optioneer, activate the pumping costing and technical parameters both will be set to the defaults, which are as follows pipeline pumping cost parameters title description units default value (if applicable) input type cost of pump pump and installation cost of the the pump currency 100000 field recurring cost of mechanical equipment replacement continued cost of replacement currency 10000 field replacement cycle of mechanical equipment equipment replacement cycle length years 15 field recurring cost of eica equipment replacement continued cost of replacement currency 10000 field replacement cycle of eica equipment equipment replacement cycle length years 10 field design life of the asset lifetime length of the asset years 50 field cost of electricity cost of electricity currency kwh 0 15 field average number of day per year pump is running number of days pump is run in a year days 365 field average number of hours per day pump is running number of hours pump is run in a day hours 12 field annual discount rate discount rate fraction 0 03 field pipeline pumping technical parameters title description units default value (if applicable) additional information surface roughness internal surface roughness of pipe mm 0 00005 typical values for different pipe types can be found in the table below pipe outer diameter outer diameter of pipe m 1 pipe sdr pipe ratio of the outer diameter to the inner diameter of the pipe n/a 11 pipe mass mass of pipe kg/m 1 minimum operating pressure minimum operating pressure allowed along the length of the pipeline bar 0 using a default of 0 bar with ensure that the pipeline does not go into negative pressure along its length maximum operating pressure maximum operating pressure allowed along the length of the pipeline bar 100 within optioneer, the best way to control pressure is by changing the flow rate of the pipe or the pipe’s total size minimum operating velocity minimum operating velocity allowed along the length of the pipeline m/s 1 within optioneer, the best way to change the operating velocity is by changing the flow rate of the pipe or the pipe’s total size erosional velocity mean maximum velocity of a fluid in the pipeline m/s 3 additional input pressure an initial water pressure at the start of a route bar 0 this should be considered as the additional pressure that a reservoir or storage tank would provide to the system mass flow rate total flow/ required flow rate through the pipeline l/s 1568 number of pumps number of pumps in the pumping station or along the route count 1 number of standby pumps number of standby pumps along the route count 1 these pumps are not in general use day to day pump safety margin margin of safety applied to the pump efficiency and motor efficiency fraction 1 1 this is a fractional value thus a 10% safety margin is defined as 1 1 pump efficiency efficiency of the pumps impeller ability to move water fraction 0 75 this is a fractional value thus a 75% pump efficiency is defined as 0 75 motor efficiency efficiency of the pumps motor to convert input energy into usefully work done fraction 0 8 this is a fractional value thus a 80% motor efficiency is defined as 0 80 minimum static head minimum static head allowed along a route m 2 surface roughness pipe type roughness “e” value (mm) steel (uncoated) 0 03 steel (coated) 0 06 precast concrete (with o rings) 0 15 concrete monolithic 0 6 upvc chemically cemented joints 0 03