initial commit / add all books

1 files changed, 18 insertions, 0 deletions

diff --git a/2063/CH9/EX9.7/9_7.sce b/2063/CH9/EX9.7/9_7.sce
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+clc

+clear

+//Input data

+V1=0.07;//Displacement of the piston of a single stage single cylinder air compressor in m^3

+P1=1;//Initial pressure in bar

+T1=308;//Initial temperature of air in K

+P2=8.5;//Pressure after the compression process in bar

+r=1.4;//Isentropic compression 

+

+//Calculations

+V2=V1*((P1/P2)^(1/1.4));//Final volume of the cylinder in m^3

+W1=P1*10^5*V1;//Work done by air during suction in Nm (or) J

+W2=(P1*10^5*V1*(1-(P2/P1)^((r-1)/r)))/(r-1);//Work done by air during compression in Nm or J

+Wa1=P2*10^5*V2;//Work done on air during delivery in Nm or J

+Wa2=((-W2)+Wa1-W1)/1000;//Net work done on air during the cycle in kJ

+

+//Output

+printf('(a)Work done by air during suction is %3.0f J\n (b)Work done on air during compression is %3.0f J\n (c)Work done on air during delivery is %3.0f J\n (d)Net work done on air during the cycle is %3.3f kJ',W1,W2,Wa1,Wa2)