| Real | pi | Modelica.Constants.pi | |
| Modelica.SIunits.Length | L | 4.06 | length of tubes |
| Modelica.SIunits.Length | A_P | 5 | Aperture of the parabola |
| Modelica.SIunits.Area | A_reflector | L*A_P | Total areo of the reflector |
| Modelica.SIunits.Area | Am_t | (rext_t^2 - rint_t^2)*pi | Area of the metal cross section |
| Modelica.SIunits.Length | D_int_t | Dext_t - 2*th_t | internal diameter of the metal tube |
| Modelica.SIunits.Area | A_int_t | L*D_int_t*pi | Lateral internal surface of the metal tube |
| Modelica.SIunits.Volume | V_tube_int | pi*D_int_t^2/4*L | Internal volume of the metal tube |
| Real | rho_cl | 0.89 | Mirror reflectivity |
| Real | Alpha_t | 0.97 | Tube Absorptivity |
| Real | tau_g | 0.91 | Glass transmissivity: from Soponova data sheet |
| Real | A0 | 4.05 | |
| Real | A1 | 0.247 | |
| Real | A2 | -0.00146 | |
| Real | A3 | 5.65E-6 | |
| Real | A4 | 7.62E-8 | |
| Real | A5 | -1.7 | |
| Real | A6 | 0.0125 | |
| General › GeometriesAndProperties of the glass envelope |
| Modelica.SIunits.Length | Dext_t | 0.07 | External diameter tube |
| Modelica.SIunits.Length | th_t | 0.004 | tube thickness |
| Modelica.SIunits.Length | rext_t | Dext_t/2 | External Radius Glass |
| Modelica.SIunits.Length | rint_t | rext_t - th_t | Internal Radius Glass |