initial commit / add all books

1 files changed, 18 insertions, 0 deletions

diff --git a/2063/CH9/EX9.1/9_1.sce b/2063/CH9/EX9.1/9_1.sce
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+clc

+clear

+//Input data

+m=1;//Mass of air that has to be compressed in kg

+P1=1;//Initial pressure of a single stage reciprocating air compressor in bar

+P2=6;//Final pressure in bar

+T1=303;//Initial temperature of air in K

+n=1.2;//Polytropic index of air

+R=287;//Gas constant for air in J/kg K

+r=1.4;//Isentropic index

+

+//Calculations

+W1=(m*R*T1*log(P2/P1))/1000;//Work required for compression in kJ/kg in Isothermal compression process

+W2=((n/(n-1))*m*R*T1*((P2/P1)^((n-1)/n)-1))/1000;//Work required for compression in a polytropic compression process in kJ/kg

+W3=((r/(r-1))*m*R*T1*((P2/P1)^((r-1)/r)-1))/1000;//Work required for compression in a Isentropic compression process in kJ/kg

+

+//Output

+printf('(a)Work required in a isothermal compression is %3.3f kJ/kg \n(b)Work required in a polytropic compression is %3.3f kJ/kg \n(c)Work required in a isentropic compression is %3.3f kJ/kg',W1,W2,W3)