//Exa 6.15 clc; clear; close; format('v',7); //Given Data : p_gauge=15;//bar p_at=750;//mm of Hg p_at=p_at/760*1.01325;//bar p=p_gauge+p_at;//bar ms=200;//Kg/hr Cpw=4.187;//KJ/KgK t1=80;//degree C hf1=Cpw*t1;//KJ/Kg hf2=858.6;//KJ/Kg(at p=16 bar) hg2=2791.8;//KJ/Kg(at p=16 bar) hfg2=1933.2;//KJ/Kg(at p=16 bar) ts=201.37;//degree C x2=0.8;//dry h2=hf2+x2*hfg2;//KJ/Kg q=ms*(h2-hf1);//KJ/hr q=q/3600;//KJ/s disp(q,"Heat transfer in boiler in KJ/s : "); tsup=ts+t1;//degree C Cp=2.2;//KJ/KgK hsup3=hg2+Cp*(tsup-ts);//KJ/Kg qsup=ms*(hsup3-h2)/3600;//KJ/s disp(qsup,"Heat transfered in superheated steam in KJ/s : "); Vg=0.1237;//m^3/Kg(at 16 bar) Ts=201.37+273;//K Tsup=tsup+273;//K Vsup=Tsup/Ts*Vg;//m^3/Kg density=1/Vsup;//Kg/m^3 disp(density,"Density of steam in Kg/m^3 : "); //Steam table is used to get some data.