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+// Example 34_12

+clc;funcprot(0);

+//Given data

+C_1=5000;//Cost of first unit in Rupees

+MD_1=100;// Maximum demand in kW

+C_2=14000;//Cost of second unit in Rupees

+MD_2=60;// Maximum demand in kW

+n=40000;// Useful life in hours 

+C_e=80;//Energy charge per kW in Rupees/year

+C_kwh=5/100;//Energy charge per kW-hr in Rupees

+

+//Calculation

+//(a)First unit

+Cc=C_1/n;// Capital cost of unit per hour in Rupees

+C_MD=((MD_1*C_e)/8760);// Charge for maximum demand per hour in Rupees

+C_eh=MD_1*1*C_kwh;// Energy charge per hour in Rupees

+TC_1=Cc+C_MD+C_eh;// Total charges per hour for the operation of first unit in Rupees

+//(b)Second unit

+Cc=C_2/n;// Capital cost of unit per hour in Rupees

+C_MD=((MD_2*C_e)/8760);// Charge for maximum demand per hour in Rupees

+C_eh=MD_2*1*C_kwh;// Energy charge per hour in Rupee

+TC_2=Cc+C_MD+C_eh;// Total charges per hour for the operation of second unit in Rupees

+printf('\n(a)Total charges per hour for the operation of first unit=Rs.%0.3f\n(b)Total charges per hour for the operation of second unit=Rs.%0.3f',TC_1,TC_2);

+if(TC_1>TC_2)

+    printf('\n The second unit is more economical than first unit in this case.');

+else

+    printf('\n The first unit is more economical than second unit in this case.');

+    end