initial commit / add all books

1 files changed, 32 insertions, 0 deletions

diff --git a/2774/CH6/EX6.6/Ex6_6.sce b/2774/CH6/EX6.6/Ex6_6.sce
new file mode 100755
index 000000000..90c67d59b
--- /dev/null
+++ b/2774/CH6/EX6.6/Ex6_6.sce
@@ -0,0 +1,32 @@
+clc

+clear

+// solution

+// initialization of variables

+// Please refer to fig of question 6.1 for quantities

+effi1=0.357//efficiency from example 6.3

+P2=2*1000 //higher pressure converted in in kPa

+P1=10 // lower pressure in kPa

+rho=1000 // density of water in Kg/m^3

+T2=600// max temperature of cycle in degree celsius

+h1=192 // enthalpy at state 1 in kJ/kg

+h3=3690 // enthalpy at state 3 in kJ/kg, 600*C and 2MPa pressure

+h4=2442 // enthalpy from example 6.3

+h6=505 // specific enthalpy @ 200 kPa from steam table

+h7=h6 // isenthalpic process

+s3=7.702// entropy at state 3 in kJ/kg.K, 600*C and 2MPa pressure

+

+h2=h1 // isenthalpic process

+s5=s3 // isentropic process

+h5=(s3-7.509)*(2971-2870)/(7.709-7.509)+2870 // interpolationg from steam table 2 200 kPa using s5=s3= 7.702 kJ/kg.

+

+m6=1 // let mass of steam =1 Kg

+m5=(h6-h2)*(m6)/(h5-h2) 

+m2=m6-m5 // conservation of mass

+

+wt=h3-h5+(h5-h4)*m2 // work done by turbine

+qb=h3-h7 // heat given to bolier

+effi2=(wt)/qb // efficiency of power cycle

+printf(" The Efficiency is %.3f or %.1f %% \n",effi2,effi2*100)

+%increase=((effi2-effi1)/effi1)*100 

+printf(" The %% increase in Efficiency is %.2f \n",%increase) 

+// The anwer is different in textbook as there the intermediate values are approximated while in scilab the calculations are precise