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clc();
clear;
// To calculate temperature difference for heat exchanger
Tc1 = 120; // Inlet cold fluid temperature in degF
Tc2 = 310; // Outlet cold fluid temperature in degF
Th1 = 500; // Inlet hot fluid temperature in degF
Th2 = 400; // Outlet hot fluid temperature in degF
K = (Tc2-Tc1)/(Th2-Tc2); // Temperature ratio
R = (Th1-Th2)/(Tc2-Tc1); // Temperature ratio
delt1 = Th2-Tc1; // Maximum temperature difference in degF
delt2 = Th1-Tc2; // Minimum temperature difference in degF
LMTD = (delt1-delt2)/log(delt1/delt2); // Log mean temperature difference
f = 0.99; // Correction factor as seen from figure
LMTDc = round(LMTD*f); // Corrected log mean temperature difference
printf("Log mean temperature difference is %d degF",LMTDc);
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