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+// Exa 3.30

+clc;

+clear;

+close;

+// Given data

+C_P = 1.045;// in kJ/kg-K

+Q = 100;// in kJ

+del_T = Q/C_P;// in degree C

+T1 = 25;// in degree C

+T1 = T1 + 273;// in K

+T = 0;// in degree C

+T = T + 273;// in K

+T2 = T1 + del_T;// in K

+del_Phi = C_P * (log(T2/T1));// in kJ/kg-K

+disp(del_Phi,"The change in entropy in the process in kJ/kg-K is");

+ini_entropy = C_P * (log(T1/T));// initial entropy in in kJ/kg-K

+disp(ini_entropy,"The initial entropyin kJ/kg-K is");