| Real | pi | Modelica.Constants.pi | |
| Boolean | PTR | true | Set true to use the 2008 PTR collector |
| Integer | N | 2 | Number of cells |
| Integer | Nt | 1 | Number of tubes |
| Modelica.SIunits.Length | L | | Length of tube |
| Modelica.SIunits.Length | D_int_t | Dext_t - 2*th_t | internal diameter of the metal tube |
| Modelica.SIunits.Area | A_lateral | L*D_int_t*pi*Nt | Lateral internal surface of the metal tube |
| Modelica.SIunits.Volume | V_tube_int | pi*D_int_t^2/4*L*Nt | Internal volume of the metal tube |
| Modelica.SIunits.Length | A_P | | Aperture of the parabola |
| Modelica.SIunits.MassFlowRate | Mdotnom | | Total nominal Mass flow |
| General › Optical Properties |
| Real | eps1 | 0.9754 | HCE Shadowing |
| Real | eps2 | 0.994 | Tracking error |
| Real | eps3 | 0.98 | Geometry error |
| Real | rho_cl | 0.935 | Mirror reflectivity |
| Real | eps4 | 0.962566845 | Dirt on Mirrors |
| Real | eps5 | 0.981283422 | Dirt on HCE |
| Real | eps6 | 0.96 | Unaccounted FORSE DA LEVARE |
| General › Vacuum pressure: between metal and glass envelope |
| Modelica.SIunits.Pressure | Patm | | Atmosphere Pressure [Pa] |
| General › Properties of the metal envelope |
| Modelica.SIunits.Length | Dext_t | 0.07 | External diameter tube |
| Modelica.SIunits.Length | th_t | 0.0025 | tube thickness |
| Initialization |
| Modelica.SIunits.Temperature | T_g_start_in | | Temperature at the inlet of the glass |
| Modelica.SIunits.Temperature | T_g_start_out | | Temperature at the outlet of the glass |
| Modelica.SIunits.Temperature | T_t_start_in | | Temperature at the inlet of the tube |
| Modelica.SIunits.Temperature | T_t_start_out | | Temperature at the outlet of the tube |
| Modelica.SIunits.Temperature | Tstart_inlet | | Temperature of the fluid at the inlet of the collector |
| Modelica.SIunits.Temperature | Tstart_outlet | | Temperature of the fluid at the outlet of the collector |
| Modelica.SIunits.Pressure | pstart | | Temperature of the fluid at the inlet of the collector |
| General › Heat transfer |
| Modelica.SIunits.CoefficientOfHeatTransfer | Unom_l | 300 | if HTtype = LiqVap: heat transfer coefficient, liquid zone |
| Modelica.SIunits.CoefficientOfHeatTransfer | Unom_tp | 700 | if HTtype = LiqVap: heat transfer coefficient, two-phase zone |
| Modelica.SIunits.CoefficientOfHeatTransfer | Unom_v | 400 | if HTtype = LiqVap: heat transfer coefficient, vapor zone |
| Initialization › Intialization options |
| Boolean | steadystate_T_fl | false | if true, sets the derivative of the fluid Temperature in each cell to zero during Initialization |
| Numerical options |
| Discretizations | Discretization | ThermoCycle.Functions.Enumerations.Discretizations.centr_diff | Selection of the spatial discretization scheme |
| Boolean | Mdotconst | false | Set to yes to assume constant mass flow rate of primary fluid at each node (easier convergence) |
| Boolean | max_der | false | Set to yes to limit the density derivative of primary fluid during phase transitions |
| Boolean | filter_dMdt | false | Set to yes to filter dMdt of primary fluid with a first-order filter |
| Real | max_drhodt | 100 | Maximum value for the density derivative of primary fluid |
| Modelica.SIunits.Time | TT | 1 | Integration time of the first-order filter |
FluidHeatTransferModel