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clc();
clear;
// To determine the value of product of overall heat transfer and the total area
To1=140; // inlet temperature of oil in degF
To2=90; // Outlet temperature of oil in degf
Cpo=0.5; // Specific heat capacity in Btu/lb-degf
Tw1=60; // Inlet tempearture of water in degF
Tw2=80; // Outlet temperature of water in degF
mo=2000; // Mass flow rate of oil in lb/hr
q=mo*Cpo*(To1-To2); // Heat transferred in Btu/hr
Cpw=1; // Heat capacity of water in Btu/hr
mw=q/(Cpw*(Tw2-Tw1)); // Mass flow rate in lb/hr
E1=(Tw1-Tw2)/(Tw1-To2); // Effective ratio
// Seeing the effective ratio and mass flow rate ratio, from the graph we get UA
UA=1.15*mo*Cpo;
printf("The product of overall heat transfer and total area is %d Btu/hr-degF",UA);
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