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+// Y.V.C.Rao ,1997.Chemical Engineering Thermodynamics.Universities Press,Hyderabad,India.

+

+//Chapter-5,Example 19,Page 186

+//Title: Power consumed by the compressor

+//================================================================================================================

+clear 

+clc

+

+//INPUT

+Ti=25;//temperature of air taken in by the adiabatic air compressor in degree celsius

+Pi=0.1;//pressure of air taken in by the adiabatic air compressor in MPa

+Pe=1;//discharge pressure of air in MPa

+n_c=0.8;//isentropic efficiency of the compressor (no unit)

+gaamma=1.4;//ratio of molar specific heat capacities (no unit)

+R=8.314;//universal gas constant in J/molK

+

+//CALCULATION

+Ti=Ti+273.15;//conversion of temperature in K

+Te=Ti*(((Pe*10^6)/(Pi*10^6))^((gaamma-1)/gaamma));//calculation of the discharge temperature of air using Eq.(4.35) in K (for reversible and adiabatic compression)

+W_s=(((R*gaamma)/(gaamma-1))*(Te-Ti))*10^-3;//calculation of the power consumed by the isentropic compressor using Eq.(5.69) in kW

+Ws=W_s/n_c;//calculation of the power consumed by an actual compressor per mole of air using Eq.(5.68)in kW 

+Te_actual=((Ws*10^3*(gaamma-1))/(R*gaamma))+Ti;//calculation of the exit temperature of air in K

+

+//OUTPUT

+mprintf("\n The exit temperature of air=%0.2f K\n",Te_actual);

+mprintf("\n The power consumed by the compressor =%f kW/mol\n",Ws);

+

+

+//===============================================END OF PROGRAM===================================================