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/CH7/EX7.19/7_19.sce | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100755 2063/CH7/EX7.19/7_19.sce (limited to '2063/CH7/EX7.19/7_19.sce') diff --git a/2063/CH7/EX7.19/7_19.sce b/2063/CH7/EX7.19/7_19.sce new file mode 100755 index 000000000..9128f92aa --- /dev/null +++ b/2063/CH7/EX7.19/7_19.sce @@ -0,0 +1,23 @@ +clc +clear +//Input data +d=25;//Diameter of the bore in cm +l=0.4;//Stroke length in m +N=300;//Operating speed of the engine in rpm +n=120;//Number of explosions per minute +pm=6.7;//Mean effective pressure in kgf/cm^2 +Tnet=90;//Net brake load in kg +R=0.75;//Radius of brake drum in m +f=0.22;//Fuel supplied per minute in m^3 +C=4500;//Calorific value of fuel in kcal/m^3 + +//Calculations +BHP=(2*3.14*R*N*Tnet)/4500;//Brake horse power in kW +A=(3.14*d^2)/4;//Area of the cylinder in cm^2 +IHP=(pm*l*A*n)/4500;//Indicated horse power in kW +H=f*C;//Heat supplied by fuel per minute in kcal +nt1=((IHP*C)/(990*427))*100;//Thermal efficiency on IHP basis in percent +nt2=((BHP*C)/(990*427))*100;//Thermal efficiency on BHP basis in percent + +//Output +printf('(a)The brake horse power is %3.2f kW\n (b)Indicated horse power is %3.3f kW\n (c)Thermal efficiency on IHP basis is %3.2f percent\n (d)Thermal efficiency on BHP basis is %3.2f percent',BHP,IHP,nt1,nt2) -- cgit