.TAeZoSysPro.FluidDynamics.BasesClasses.LiquidNode

Information

This model represents a pool containing a liquid water mass. The interface with its environment is treated through 3 ports.
One thermal port for only heat exchanges. The power could come from, for example :

• An internal heating or cooling power
• The condensation or evaporation at the water surface
• The convection at water surface or with the container

• a flow a pumping system
• a flow from the wall condensation that flows to the pool

To model the pool, the followings hypotheses are made:

• Hypothesis 1: The fluid coming from the inlet vector is only liquid water
• Hypothesis 2: The solidification of the water is not treated
• Hypothesis 3: The specific heat capacity at constant pressure and at constant volume are the same for the liquid water

The basic constitutive equations for the pool is :
m = medium.d * V
der(m) = m_flow_boiling + Water_Input_internal[1]
m * LiquidWater.cp * der(T) - m_flow_boiling*LiquidWater.LHea = Heatport.Q_flow + Water_Input_internal[1] * LiquidWater.cp * (Water_Input_internal[2] - T )
The match with the saturation condition are made with the following condition :
if /*noEvent*/(T > Tsat) and /*noEvent*/(m_flow_boiling &#8804 0) then
der(T) = der(Tsat)
else
m_flow_boiling = 0
end if

Contents

Name	Description
Medium
MediumGas