initial commit / add all books

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+clc

+twb1 = 15.2// Wbt in degree Celsius 

+twb2 = 26.7// Wbt in degree Celsius  

+tw3 = 30  // Temperature at state 3 in degree Celsius 

+h1 = 43 // Enthalpy at state 1 in kJ/kg

+h2 = 83.5 // Enthalpy at state 2 in kJ/kg

+hw = 84 // Enthalpy of water in kJ/kg

+mw = 1.15 // mass flow rate of water in kg/s

+W1 = 0.0088 // Humidity ratio of inlet stream 

+W2 = 0.0213 // Humidity ratio of exit stream 

+hw3 = 125.8 // Enthalpy of water entering tower in kJ/kg 

+hm = 84 // Enthalpy of make up water in kJ/kg 

+G = 1 // mass flow rate of dry air in kg/s

+hw34 = (G/mw)*((h2-h1)-(W2-W1)*hw)  // Enthalpy change

+tw4 = tw3-(hw34/4.19) // Temperature of water leaving the tower

+A = tw4-twb1 //Approach of cooling water

+R = tw3-tw4 //Range of cooling water

+x = G*(W2-W1) //Fraction of water evaporated 

+

+printf("\n Example 15.8\n")

+printf("\n Temperature of water leaving the tower is %f degree celcius",tw4)

+printf("\n Range of cooling water is %f degree Celsius",R)

+printf("\n Approach of cooling water is %f degree celcius",A)

+printf("\n Fraction of water evaporated is %f kg/kg dry air",x)

+//The answers vary due to round off error

+