function EmissivGP
extends ThermoSysPro.Properties.FlueGases.unsafeForJacobian;
input Units.SI.Length AL "Equivalent length (radiation)";
input Units.SI.Temperature TMF "Flue gases average temperature";
input Units.SI.Temperature TPE "Wall temperature";
input Units.SI.AbsolutePressure PMEL "Mixture pressure";
input Units.SI.AbsolutePressure PH2O "H2O partial pressure";
input Units.SI.AbsolutePressure PCO2 "PCO2 partial pressure";
input Real FV "Volume concentration of the particles in the flue gases";
input Units.SI.Length DP "Particles average diameter";
input Real EPSPAR "Wall emissivity";
output Real EPSFP "Particles/flue gases emissivity";
end EmissivGP;