From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 2063/CH9/EX9.12/9_12.sce | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100755 2063/CH9/EX9.12/9_12.sce

(limited to '2063/CH9/EX9.12/9_12.sce')

diff --git a/2063/CH9/EX9.12/9_12.sce b/2063/CH9/EX9.12/9_12.sce
new file mode 100755
index 000000000..00a82086f
--- /dev/null
+++ b/2063/CH9/EX9.12/9_12.sce
@@ -0,0 +1,22 @@
+clc
+clear
+//Input data
+P1=1;//Pressure of air drawn by a two stage single acting reciprocating air compressor in bar
+T1=293;//Initial temperature in K
+P3=60;//Final pressure after the compression in bar
+P2=10;//Pressure after compression in the LP cylinder in bar
+T2=303;//Temperature after cooling in K
+D=0.16;//Diameter of a cylinder in m
+L=0.2;//Stroke length of the cylinder in m
+n=1.3;//Polytropic index
+N=300;//Operating speed of the compressor in rpm
+R=287;//Gas constant in J/kg K
+
+//Calculations
+V1=(3.14*D^2*L)/4;//Volume of the LP cylinder in m^3
+V2=(P1*V1*T2)/(T1*P2);//Volume of the HP cylinder in m^3
+W=(n/(n-1))*(P1*10^5*V1*(((P2/P1)^((n-1)/n))-1)+(P2*10^5*V2*(((P3/P2)^((n-1)/n))-1)));//Work done by the compressor per working cycle in N m
+P=(W*N)/(60*1000);//Power of the compressor in kW
+
+//Output
+printf('Power of the compressor when it runs at 300 rpm is %3.3f kW',P)
-- 
cgit