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+clc
+phi1=0.9
+Ps=2.337
+pw=phi1*Ps
+mprintf("pw=%fkPa\n",pw)//ans vary due to roundoff error
+P=101.325
+Pa=P-pw
+w1=0.622*(pw/Pa)
+mprintf("w1=%f kg H2O/kg dry air\n",w1)//ans vary due to roundoff error
+Mw=pw/P
+mprintf("Mole fraction of water=%f\n",Mw)//ans vary due to roundoff error
+R=8.314*10^3
+T=293
+v1=(R*T)/(P*10^3)
+mprintf("v1=%fmetre-cube/kmol\n",v1)//ans vary due to roundoff error
+ma1=((1-Mw)*(10/v1))*28.97
+mprintf("Flow rate of dry air=%f kg/min\n",ma1)//ans vary due to roundoff error
+TDB=40
+phi2=0.2
+w2=0.009
+pw=1.3 //in kPa
+Mw=pw/P
+mprintf("Mole fraction of water vapor=%f\n",Mw)//ans vary due to roundoff error
+v2=(R*(TDB+273))/(P*10^3)
+mprintf("v2=%fmetre-cube/kmol\n",v2)//ans vary due to roundoff error
+ma2=((1-Mw)*(30/v2))*28.97
+mprintf("ma2=%fkg/min\n",ma2)//ans in textbook is wrong
+w3=(w2+w1*(ma1/ma2))/(1+(ma1/ma2))
+mprintf("w3=%f kg H20/kg dry air\n",w3)//ans vary due to roundoff error
+h1star=54
+h2star=64
+h3star=(h2star+h1star*(ma1/ma2))/(1+(ma1/ma2))
+mprintf("h3star=%fkJ/kg dry air",h3star)//ans vary due to roundoff error
+
+
+