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+// Example 34_19

+clc;funcprot(0);

+//Given data

+//(i)A private diesel generating plant

+MD=900;// kW

+F_l=30;// Load factor in %

+Cc=90*10^5;// Capital cost in rupees

+Cf=800;// Fuel cost in Rs./ton

+Fc=0.3;//Fuel consumption in kg/kWh-generated

+Mc=2.5;// Cost of maintainence in paise/kWh-generated

+Oc=0.3;// Cost of lubricating oil,water,store,etc in paise/kWh-generated

+W=180000;// Wages in Rs./year 

+ID_1=10;//Interest and decpreciation in % per year

+//(ii)Public supply

+MD_pub=1500;// Maximum demand per year in Rs./kW

+Mc_pub=80;// paise/kWh

+

+//Calculation

+//(i)Private plant

+ID=ID_1*Cc;//Interest and decpreciation in rupees

+Nu=MD*(F_l/100)*8760;//Number of units required per year in kWh/year

+Fr=(F_l/100)*(Nu);// Fuel required in kg/year

+CF=Fr*(Mc_pub/100);// Fuel cost in Rs./year

+Cmo=((0.3+2.5)/100)*Nu;//Cost of maintainence,oil and water in Rs./year

+Tc=ID+CF+Cmo+W;// Total cost of running the plant per year in rupees

+Ec_1=(Tc/Nu);//The energy cost in Rs./kWh

+//(ii)Public supply

+Tc=(MD_pub*MD)+((Mc_pub/100)*Nu);// Total cost in Rs./year

+Ec_2=Tc/Nu;// Energy cost in Rs./kWh

+if(Ec_1>Ec_2)

+    printf('\nThe public supply set is preferable as its cost is less than diesel set.');

+else

+    printf('\nThe private supply set is preferable as its cost is less than diesel set.');

+end

+// The answer provided in the textbook is wrong