ChlorideSaltReceiver 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 ChlorideSaltReceiver 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).
- 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. The default medium package is the MoltenSalt_ph.
- H_rcv: Receiver height, in meters. Default: 1.0 m.
- D_rcv: Receiver diameter, in meters. Default: 1.0 m.
- N_pa: Number of panels of the receiver. Default: 20
- D_tb: Outer diameter of receiver tubes, in meters. Default: 25e-3 m (1 mm).
- t_tb: Wall thickness of receiver tubes, in meters. Default: 1e-3 m (1 mm).
- ab: Coating absorptance of the receiver. Default: 1.0.
- em: Coating emmitance of the receiver. Default: 1.0.
- const_alpha: Boolean, true if external convective heat transfer. Default: true.
- alpha: Heat transfer coefficient due to external convection, in W/(m2.K). Default: 30.0 W/(m2.K).
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