initial commit / add all books

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+// Given:-
+p1 = 100.00                                                                     // in bar
+T1 = 300.00                                                                     // in kelvin
+p2 = 40.00                                                                      // in bar
+T2 = 245.00                                                                     // in kelvin
+
+
+// From table A-23
+h1starbar = 8723.00                                                             // in kj/kmol
+h2starbar = 7121.00                                                             // in kj/kmol
+// From Tables A-1
+Tc = 126.00                                                                     // critical temperature in kelvin
+pc = 33.9                                                                       // critical pressure in bar
+M = 28.00                                                                       // molar mass in kg/kmol
+Rbar = 8.314                                                                    // universal gas constant in kj/(kmol.K)
+Term1 = 0.5                                                                      
+Term2 = 0.31
+
+// Calculations
+TR1 = T1/Tc                                                                     // reduced temperature at the inlet
+PR1 = p1/pc                                                                     // reduced pressure at the inlet
+TR2 = T2/Tc                                                                     // reduced temperature at the exit
+PR2 = p2/pc                                                                     // reduced pressure at the exit
+wcvdot = (1.00/M)*(h1starbar-h2starbar-Rbar*Tc*(Term1-Term2))                      // in kj/kg
+
+// Result
+printf( ' The work developed, in kJ per kg of nitrogen flowing is :  %.2f',wcvdot)