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+clear;
+clc;
+
+// A Textbook on HEAT TRANSFER by S P SUKHATME
+// Chapter 9
+// Mass Transfer
+
+
+// Example 9.5
+// Page 359
+printf("Example 9.5, Page 359 \n \n");
+
+// Evaporation of water, one dimensional
+T_w = 20+273 ; // [K]
+D = 0.04 ; // [m]
+h = 0.20 ; // [m]
+h_w = 0.03 ; // [m]
+
+P = 1.014*10^5; // [Pa]
+R = 8314 ; // [J/kg mole K]
+P_sat = 0.02339 ; // [bar]
+x_a1 = P_sat/1.014 ; // mole fraction at liq-vap interface
+x_a2 = 0 ; // mole fraction at open top
+c = P/(R*T_w);
+// From Table 9.2
+Dab = 2.422*10^-5 ; // [m^2/s]
+
+// Substituting above values in eqn 9.4.18
+flux = 0.041626*Dab/0.17*log((1-0)/(1-x_a1)); // [kg mole/m^2 s]
+rate = flux*18*(%pi/4)*(D^2);
+
+printf("Rate of evaporation of water = %e kg/s",rate);
+\ No newline at end of file