หมวดหมู่: hydraulic hose line

How to calculate the Pressure Drop, Flow Rate and Velocity in Pipeline

For examples – Your planning – Tubular Pipeline

1. Pipeline size 150A ( I.D 6”) SCH#80 W.P 250kg/cm2 x 1.6 km
2. Pipeline size 150A ( I.D 6”) SCH#80 W.P 250kg/cm2 x 6.0 km
Both will be carrying heavy waxy crude oil that is solid at room temp.
You need to look at insulating our line pipe prior to installation.
Flow rates/velocity will be minimal and there will be no associated water or gas with the crude.

Pressure Drop, Flow Rate and Velocity Calculation in Pipeline

Friction Coefficient 0f  Non-stick Inner Pipe Lining = 0.01
Working Pressure = 210 Kg/cm2
Temperature = 45 – 47 Deg. C
Flow- Velocities Chart


Viscosity of heavy waxy crude oil ~ upto 15,000 Centipoises
You can find out :-
1. Pressure Drop (PD) = ?
2. Flow Rate = ?
3. Velocity = ?
** If you knew PD , You will realize whether your system could work or not ? **
How to calculate the Pressure Drop, Flow Rate and Velocity in Hydraulic Hoses
For examples – Your planning : HYD hose parts

1. HYD Hose Part size -06 ( I.D 3/8”) Spec. W.P 300 kg/cm2 x ?.? m
2. HYD Hose Part size -08 ( I.D 1/2”) Spec. W.P 300 kg/cm2 x ?.? m
Both parts will be carrying hyd oil that is syrup liked fluid at room temp.
We need to look at the pressure drop – hydraulic hose lines prior to fix for installation in advance.
Flow rates/velocity will be minimal and there will be no associated water or gas with the fluid oil.
Pressure Drop, Flow Rate and Velocity Calculation in Pipeline

Friction Coefficient of inner surface rubber tubular = 0.05
Working Pressure = 300 Kg/cm2
Temperature = 45 – 47 Deg. C
Flow- Velocities Chart


Viscosity of syrup liked oil ~ upto 450 Centipoises ( or Centi-strokes )
If we knew the capacity or GPM of Pump ( Gallon Per Minute )
We then can find out :-
1. Flow Rate = ?
2. Velocity = ?
3. Pressure Drop (PD) = ?
** If you knew PD , You will realize whether your system could work or not ? **
 
The system is now running too slowly because of pressure drop problem.caused by the over-crimping on fitting inserts , the insert collapsed too much.
Trouble on Connection points :
The pressure drop is at the point of over crimping hose fittings. – The lost pressure is converted to energy in other forms such as heat, sound and vibration. -> If the pressure drop is high. Make a hot line with noises or shakes.

PS :-
** View Detail Pressure Drop is attached **
How to calculate the Pressure Drop, Flow Rate and Velocity in Pipeline
Flow rates / velocity will be minimal and there will be no associated water or gas with the fluid oil.
Pressure Drop, Flow Rate and Velocity Calculation in Pipeline
Friction Coefficient of inner surface tubular = ?
Working Pressure = ? Kg/cm2
Temperature = ? Deg. C
Flow- Velocities Chart
Viscosity of hydraulic oil < 15,000 ? Centipoises
If we knew the capacity or GPM of Pump ( Gallon Per Minute )
We then can find out :-
1. Flow Rate = ?
2. Velocity = ?
3. Pressure Drop (PD) = ?
** If you knew PD , You will realize whether your system could work or not ?