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+// Exa 9.10

+clc;

+clear;

+close;

+// Given data

+T_sat = 179.88;// in degree c

+T_sat = T_sat + 273;// in k

+T_sup = 200;// in degree c

+T_sup = T_sup + 273;// in k

+L = 2013.6;// in kJ/kg

+C_ps = 2.326;

+C_pw = 1;

+x = 0.8;

+phi_wet = C_pw *log(T_sat/273) + ( (x * L)/T_sat);// in kJ/kg-K

+disp(phi_wet,"Entropy of wet steam in kJ/kg-K is");

+// Part (b)

+phi_dry =C_pw * log(T_sat/273)+L/T_sat;// in kJ/kg

+disp(phi_dry,"Entropy of dry and saturated steam in kJ/kg-K is");

+// Part (c)

+phi_sup = phi_dry+C_ps *log(T_sup/T_sat);// in kJ/kg

+disp(phi_sup,"Entropy at 200°C in kJ/kg-K is :");