modelParticleReceiver
Extends from Interfaces.Models.ReceiverFluid.
Information
ParticleReceiver models the heat transfer characteristics of an external tubular receiver with a user-defined geometry by employing simple energy and mass balances, an average temperature for receiver external surface, and heat transfer correlations. The receiver ParticleReceiver model has the following connectors:
- A HeatPort interface. According to the Modelica sign convention, a positive heat flow rate Q_flow (in Watts) is considered to flow into the receiver.
- A Real_input for the ambient temperature (in K).
- A BooleanInput for the operation of the field.
- An inlet FluidPort_a and an outlet FluidPort_b. Each fluid connector has three stream variables (h_outflow, Xi_outflow and C_outflow) associated with the flow variable m_flow. These variables represent the specific enthalpy, the mass fractions and the concentrations associated to m_flow <0.
The model requires to define the following parameters:a Medium package from the Media library.
- H_rcv: Receiver height, in meters. Default: 1.0 m.
- W_rcv: Receiver width, in meters. Default: 1.0 m.
- L_rcv: Receiver length(depth), in meters. Default: 1.0 m.
- th_c_in: Curtain thickness at the receiver inlet. Default: 1.0 m.
- ab: Absorptance of the curtain.
- em: Emmitance of the curtain.
- const_alpha: Boolean, true if external convective heat transfer. Default: true.
- alpha: Heat transfer coefficient due to external convection, in W/(m2.K). Default: 1.0 W/(m2.K).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Boolean | const_alpha | true | If true then constant convective heat transfer coefficient |
| SI.CoefficientOfHeatTransfer | alpha | 1 | Convective heat transfer coefficient |
| Technical data | |||
| SI.Length | H_rcv | 2 | Receiver drop height |
| SI.Length | W_rcv | 2 | Receiver width |
| SI.Length | L_rcv | 1 | Receiver length(depth) |
| SI.Area | A | H_rcv*W_rcv | Receiver aperture area |
| SI.Length | th_c_in | 1 | Curtain thickness at the inlet |
| SI.Efficiency | em | Emissivity | |
| SI.Efficiency | ab | Absorptivity | |
Connectors
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Medium.BaseProperties | medium | ||
| SI.SpecificEnthalpy | h_in | Specific enthalpy at inlet | |
| SI.SpecificEnthalpy | h_out | Specific enthalpy at outlet | |
| SI.Temperature | T_in | Medium.temperature(state_in) | Temperature at inlet |
| SI.Temperature | T_out | Medium.temperature(state_out) | Temperature at outlet |
| SI.HeatFlowRate | Q_loss | Total losses | |
| SI.HeatFlowRate | Q_rad | Radiative losses | |
| SI.HeatFlowRate | Q_con | Convective losses | |
| SI.HeatFlowRate | Q_rcv | Heat flow captured by curtain | |
| Real | eff |
Revisions
- Jun 2019 by Ali Shirazi and Armando Fontalvo:
Created. - Jan 2020 by Armando Fontalvo:
Information modified.