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

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 1226/CH20/EX20.27/EX20_27.sce |  18 ++++++++++++++++++
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 create mode 100755 1226/CH20/EX20.27/EX20_27.sce

(limited to '1226/CH20/EX20.27')

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+clc;funcprot(0);//EXAMPLE 20.27
+// Initialisation of Variables
+ns=3;......//No of stages
+p1=1.05;......//Intake pressure in bar
+pd=40;..........//Delivery pressure in bar
+V=3;..........//Volume of air xupplied per min in m^3
+n=1.25;........//Compression index
+//Calculations
+Wd=((ns*n)/(n-1))*p1*V*10^5*(((pd/p1)^((n-1)/(ns*n)))-1);..........//Work done per min in Nm
+disp(Wd,"Work done in Nm:")
+isoWd=10^5*p1*V*log(pd/p1);..........//Isothermal work done in Nm
+disp(isoWd,"Isothermal work done in Nm:")
+etaiso=isoWd/Wd;...............//Isothermal efficiency
+disp(etaiso*100,"Isothermal efficiency in %:")
+wdss=((n)/(n-1))*p1*V*10^5*(((pd/p1)^((n-1)/(n)))-1);..........//Single stage Work done per min in Nm
+disp(wdss,"Single stage work done per min in Nm:")
+perws=(wdss-Wd)/wdss;.......//Percentage of work saved
+disp(perws*100,"Percentage of work saved:")
-- 
cgit