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+//clc()
+F = 1000;//kg/h
+H1 = 116.3;//kJ/kg ( enthalpy of feed solution - 10% NaOH, 305 K )
+H2 = 560.57;//kJ/kg ( enthalpy of thick liquor - 50% NaOH, 380 K )
+Hsteam = 2676;//kJ/kg ( 1atm , 373.15K )
+//by doing material balances,
+P = 200;//kg/h
+mvap = 800;//kg/h
+//Enthalpy balance gives, F*H1 + Q = mvap*Hsteam + P*H2
+Q = (mvap*Hsteam + P*H2)-F*H1;
+disp("kJ/h",Q,"Heat to be supplied = ")
+\ No newline at end of file