.SolarTherm.Models.CSP.CRS.Receivers.ParticleReceiver

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).

Revisions

• Jun 2019 by Ali Shirazi and Armando Fontalvo:
  Created.
• Jan 2020 by Armando Fontalvo:
  Information modified.