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+clear ;

+clc;

+// Example 5.14

+printf('Example 5.14\n\n');

+printf('Page No. 137\n\n');

+

+// given

+T1 = 25;// Wet-bulb temperature in degree celcius

+T2 = 40;//Dry-bulb temperature in degree celcius

+

+//By using the humidity chart and steam tables for air-water mixtures at the given temperatures, the all following data can be obtained

+

+//(a) humidity

+w = 0.014;// in kg/kg

+printf('the required humidity is %.3f kg/kg \n',w)

+

+

+//(b) relative humidity

+R_H = 30;// in percentage

+printf('the required relative humidity in percentage is %.0f\n\n',R_H)

+

+//(c) the dew point

+T_w = 20;// in degree celcius

+printf('the required dew-point temperature is %.0f deg C\n',T_w)

+

+//(d) the humid heat

+Cpa = 1.006*10^3;// Heat Capacity of bone dry air in J/kg-K

+Cpwv = 1.89*10^3;// Heat Capacity of water vapour in J/kg-K

+S = Cpa + (w*Cpwv);//in J/kg-K

+printf('the humid heat is %.0f J/kg-K\n\n',S )

+

+//(e) the humid volume

+V_G = ((1/29)+(w/18))*22.41*((T2 + 273)/273);//in m^3/kg

+printf('the humid volume is %.3f m^3/kg \n',V_G)

+

+//(f) adiabatic process

+w_A = 0.020;// in kg/kg

+printf('the humidity of the mixture if saturated adiabatically is %.3f kg/kg \n\n',w_A)

+

+// (h) isothermal process

+w_i = 0.049;// in kg/kg

+printf('the humidity of the mixture if saturated isothermally is %.3f kg/kg \n',w_i)

+

+

+