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//Variable declaration:
Too = 100 //Steam temperature ( C)
Ti = 18 //Initial temperature of liquid TCA ( C)
Tf = 74 //Final temperature of liquid TCA ( C)
t = 180 //Heating time (s)
p = 87.4 //Density of TCA (lb/ft^3)
V = 18 //Kinematic viscosity of TCA (m^2/s)
cp = 0.23 //Heat capacity of TCA (Btu/lb. F)
U = 200 //Overall heat transfer coefficient (Btu/h.ft^2. F)
//Calculation:
ui = Too-Ti //Initial excess temperature ( C)
uf = Too-Tf //Final excess temperature ( C)
R = log(ui/uf) //Ratio t/r
r = t/R //Thermal time constant (s)
A = p*V*cp/(3600*U*r) //Required heating area (ft^3)
Ti_F = Ti*9/5+32 //Initial temperature in fahrenheit scale ( F)
Tf_F = Tf*9/5+32 //Final temperature in fahrenheit scale ( F)
Q = p*V*cp*(Tf_F-Ti_F) //Total amount of heat added (Btu)
//Result:
printf("1. The required surface area of the heating coil is : %e ft^3",A)
printf("2. The total heat added to the liquid TCA is : %.0f Btu",Q)
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