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

---
 2420/CH3/EX3.9/3_9.sce | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100755 2420/CH3/EX3.9/3_9.sce

(limited to '2420/CH3/EX3.9')

diff --git a/2420/CH3/EX3.9/3_9.sce b/2420/CH3/EX3.9/3_9.sce
new file mode 100755
index 000000000..3126c9359
--- /dev/null
+++ b/2420/CH3/EX3.9/3_9.sce
@@ -0,0 +1,24 @@
+clc
+clear
+//Initialization of variables
+r=1.75 //ft
+F1=72 //lb
+F2=24 //lb
+n=500 //rpm
+m=1.8 //lb
+mi=15 //min
+Qh=20000 //Btu/lb
+//calculations
+Bhp=2*%pi*r*F1*n/33000
+Fhp=2*%pi*r*F2*n/33000
+Ihp=Bhp+Fhp
+Fc=m*60/mi
+Bsfc=Fc/Bhp
+Isfc=Fc/Ihp
+etam=Bhp/Ihp *100
+etabt=Bhp*2545/(Fc*Qh)
+etait=Ihp*2545/(Fc*Qh)
+//results
+printf("Thermal efficiency = %d percent",etam)
+printf("\n Brake thermal effficiency = %.1f percent",etabt*100)
+printf("\n Indicated thermal effficiency = %.1f percent",etait*100)
-- 
cgit