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 --- 2015/CH6/EX6.6/6_6.sce | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100755 2015/CH6/EX6.6/6_6.sce (limited to '2015/CH6/EX6.6') diff --git a/2015/CH6/EX6.6/6_6.sce b/2015/CH6/EX6.6/6_6.sce new file mode 100755 index 000000000..8cf1f6775 --- /dev/null +++ b/2015/CH6/EX6.6/6_6.sce @@ -0,0 +1,31 @@ +clc +//initialisation of variables +u=250 //blade speed in m/s +theta=80 //angle in degrees +alpha=20 //angle in degrees +oed=786.7 //overall enthalpic drop in kj/kg +sp=3000 //rotational speed of an impulse turbine wheel in revolutions +p=6000 //power developed in kw +rf=1.04 //reheat factor +ie=2993.4 //kj/kg +vs=9.28 //m*m*m/kg +pi=(22/7) +//CALCULATIONS +ci=(u*sin(100*(pi/180)))/sin(60*(pi/180)) +x=(2*ci*cos(20*(pi/180)))-u //x=cwi-cwo +wd=x*u*10^-3 +ed=wd*10 +teff=ed/oed +seff=teff/rf +m=p/ed +ae=ie-ed +cf=ci*sin(20*(pi/180)) +a=(m*vs)/cf +dm=(60*u)/(pi*sp) +h=a/(pi*dm) +//RESULTS +printf('enthalpy drop is %2fkj/kg',ed) +printf('\nturbine efficiency is %2f',teff) +printf('\nstage efficiency is %2f',seff) +printf('\nmass flow of steam is %2fkg/s',m) +printf('\nblade height us %2fm',h) -- cgit