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clc
h2=203.1063
s2=0.6825
sf=0.0736
sg=0.7094
hf=17.9517
hg=178.9017
s1=s2
X1=(s1-sf)/(sg-sf)
mprintf("X1=%f\n",X1)//ans vary due to roundoff error
h1=(X1*hg)+(1-X1)*hf
mprintf("h1=%fkJ/kg\n",h1)//ans vary due to roundoff error
h3=75.1134
h4=h3
COPR=(h1-h4)/(h2-h1)
mprintf("COPR=%f\n",COPR)//ans vary due to roundoff error
m=0.05
mprintf("Capacity of refrigerator=%fkW\n",m*(h1-h4))//ans vary due to roundoff error
Preq=m*(h2-h1)
mprintf("Power required=%fkW\n",Preq)//ans vary due to roundoff error
TL=253 //in kelvin
TH=313 //in kelvin
COP=TL/(TH-TL)
mprintf("COP=%f",COP)//ans vary due to roundoff error
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