ThreeWayValve

ThreeWayValve#

ThermoSysPro Version 4.2#

This component model is documented in Sect. 13.9 of the ThermoSysPro book.

Three way valve#

The three-way valve splits the fluid in two directions. When the valve is fully open, the fluid moves in one direction, and when it is fully closed, it moves in the other direction. When it is partially open, a fraction of the fluid moves in one direction and the rest in the other. For water/steam, the flow regime is single-phase or homogeneous two-phase flow.

Modelica component model#

The equations mentioned below are implemented in the component ThreeWayValve, located in the WaterSteam.PressureLosses sub-library.

The ThreeWayValve is composed of two control valves, a pipe pressure loss, a VolumeA, a Constant and an Add block.
This component has 4 connectors:

  • C1: fluid inlet,

  • C2: fluid outlet,

  • C3: fluid outlet,

  • Ouv: valve opening.

ThermoSysPro.WaterSteam.PressureLosses.ThreeWayValve.svg

Nomenclature#

See control valve and pipe pressure loss.

Governing equations#

See control valve and pipe pressure loss.

References#

El Hefni, Baligh and Bouskela, Daniel (2019). Modeling and Simulation of Thermal Power Plants with ThermoSysPro, sect. 13.9. Springer Nature Switzerland AG.

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