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

---
 2657/CH27/EX27.4/Ex27_4.sce | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100755 2657/CH27/EX27.4/Ex27_4.sce

(limited to '2657/CH27/EX27.4')

diff --git a/2657/CH27/EX27.4/Ex27_4.sce b/2657/CH27/EX27.4/Ex27_4.sce
new file mode 100755
index 000000000..78712b62e
--- /dev/null
+++ b/2657/CH27/EX27.4/Ex27_4.sce
@@ -0,0 +1,29 @@
+//Simulating site ambient conditions
+clc,clear
+//Given:
+//Datas are taken from Ex. 27.3
+Px=640 //Brake power at site in kW
+eta_m=85 //Mechanical efficiency in percent
+px=70 //Site ambient air pressure in kPa
+py=100 //Standard total barometric pressure in kPa
+Tx=330 //Site ambient temperature in K
+Ty=300 //Test ambient temperature in K
+p2_py=2.5 //Pressure ratio
+by=238 //Specific fuel consumption at test in g/kWh
+//Solution:
+//Refer table 27.1, 27.2 and 27.3
+m=0.7,n=1.2,q=1 //Exponents
+ky=(py/px)^m //The ratio of indicated power at test
+alphay=ky-0.7*(1-ky)*(100/eta_m-1) //Power adjustment factor at test
+Py=round(Px*alphay) //Brake power at test in kW
+//From fig 27.1
+Tx_Ty=Tx/Ty //Temperature ratio
+p1_py=0.925 //Ratio
+p1=p1_py*py //Air pressure after throttle in kPa (printing error)
+Betay=ky/alphay //Fuel consumption adjustment factor at test
+bx=by/Betay //Specific fuel consumption at site in g/kWh
+//Results:
+printf("\n Power developed on the test bed, Py = %d kW",Py)
+printf("\n The pressure behind the throttle plate, p1 = %.1f kPa",p1)
+printf("\n The fuel consumption adjusted to site ambient conditions, bx = %d g/kWh",bx)
+//Answer in the book is printed wrong
-- 
cgit