.ThermoSysPro.WaterSteam.PressureLosses

Information

## Copyright © EDF 2002 - 2025

## ThermoSysPro Version 4.2

Pressure Losses  


Pressure loss, or pressure drop, is the difference in fluid pressure between two points of a pipe. Pressure loss is due to frictional forces. Its main determinants are the fluid velocity and viscosity. The Bernoulli equation is used to calculate the friction pressure loss coefficient for single- and  
two-phase flow (evaporation and condensation).  

For a better understanding of the underlying physics, see Chap. 13 of :cite:`el19`.  



     


    

Contents

Name	Description
Bend	Bend
CheckValve	Check valve
ControlValve	Control valve
Diaphragm	Diaphragm
DynamicCheckValve	Dynamic check valve
DynamicReliefValve	Dynamic relief valve
IdealCheckValve	Ideal check valve
IdealSwitchValve	Ideal switch valve
InvSingularPressureLoss	Inverse singular pressure loss
LumpedStraightPipe	Lumped straight pipe (circular duct)
NonBoilingValve	Non boiling valve
PipePressureLoss	Pipe generic pressure loss
SingularPressureLoss	Singular pressure loss
SwitchValve	Switch valve
ThreeWayValve	Three way valve