HydraulicValveFlow
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Use
The 3-way hydraulic valve controls the flow temperature of a heat sink dependent on heat return sink and heat supply flow temperature. In contrast, the HydraulicValveReturn regulates the return temperature on the supply side.
Parameters and Connectors
The component ensures the desired flow temperature on the sink side by mixing the return flow (▶SinkReturn) on the sink side to the supply flow (▶SupplyFlow) (see Model Background). The desired temperature is specified via ▶TFlowRef. It is important to note that this valve defines the volume flow on the supply side! It must therefore be ensured that the volume flow from ▶SupplyReturn corresponds to the incoming volume flow at ▶SupplyFlow.
The reference temperature is only reached if this is physically possible. For example, if the temperature at ▶SupplyFlow is lower or the temperature at ▶SinkReturn is higher than ▶TReturnRef the return temperature of the supply will not match the reference temperature.
The valve itself can be described in terms of its volume (VValve), the properties of the medium (cpMed, rhoMed) and heat losses (QlossRate, TAmbient). To ensure the numerical stability of the model, a minimum temperature difference (TDiffMin) must be maintained between the flow temperature on the supply side and the return temperature on the sink side.
Model Background
The principle of the component is shown in the following figure. All variables in green are defined outside the component. All variables in red are defined by this component. The goal here is to control the ▶TSinkFlow to the target ▶TFlowRef. qvSupply acts as a control variable here.
