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//Variable declaration:
m1 = 144206 //Mass flow rate of flue gas (lb/h)
cp1 = 0.3 //Average heat capacities of the flue gas (Btu/lb F)
cp2 = 0.88 //Average heat capacities of the solid (Btu/lb F)
//From example 18.18:
T1 = 550 //Initial temperature of gas ( F)
T2 = 2050 //Final temperature of gas ( F)
T3 = 70 //Initial temperature of solid ( F)
T4 = 550-40 //Final temperature of solid ( F)
//Calculation:
Dhf = m1*cp1*(T2-T1) //For the flue gas, the enthalpy change for one hour of operation (Btu)
Dhs = round(Dhf*10**-4)/10**-4 //For the solids, the enthalpy change for one hour of operation (Btu)
m2 = Dhs/(cp2*(T4-T3)) //Mass of solid (lb)
//Result:
printf("The mass of solid is : %.0f lb .",m2)
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