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//Variable declaration:
//From example 21.1:
DSh = -0.2744 //Entropy for hot fluid (Btu/ F)
DSc = 0.3795 //Entropy for cold fluid (Btu/ F)
m = 1 //Mass flowrate (lb)
cP = 1 //Heat capacity (Btu/lb. F)
//From figure 21.4:
DT = 0 //Temperature difference driving force ( F)
DS_D = 0 //Entropy for D exchanger (Btu/ F)
//Calculation:
DS_C = DSh+DSc //Entropy for C exchanger (Btu/ F)
DSt = DS_C+DS_D //Total entropy change of exchangers (Btu/ F)
//Result:
printf("The total entropy change is : %f Btu/ F .",DSt)
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