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

---
 551/CH12/EX12.13/13.sce | 69 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100755 551/CH12/EX12.13/13.sce

(limited to '551/CH12/EX12.13/13.sce')

diff --git a/551/CH12/EX12.13/13.sce b/551/CH12/EX12.13/13.sce
new file mode 100755
index 000000000..8dc0fa663
--- /dev/null
+++ b/551/CH12/EX12.13/13.sce
@@ -0,0 +1,69 @@
+clc
+//At 30bar, 400 0C
+
+h1=3230.9; //kJ/kg
+s1=6.921; //kJ/kg
+s2=s1;
+s3=s1;
+//At 5 bar
+s_f1=1.8604;
+s_g1=6.8192; //kJ/kg K
+h_f1=640.1; //kJ/kg
+
+t2=172 //0C
+h2=2796; //kJ/kg
+
+//At 0.1 bar
+s_f3=0.649; //kJ/kg K
+s_fg3=7.501; //kJ/kg K
+h_f3=191.8; //kJ/kg
+h_fg3=2392.8; //kJ/kg
+
+x3=(s2-s_f3)/s_fg3;
+h3=h_f3+x3*h_fg3;
+
+h_f4=191.8; //kJ/kg
+h_f5=h_f4;
+
+h_f6=640.1; //kJ/kg
+h_f7=h_f6;
+s7=1.8604; //kJ/kg K
+s4=0.649; //kJ/kg K
+
+m=(h_f6-h_f5)/(h2-h_f5);
+
+W_T=(h1-h2) + (1-m)*(h2-h3);
+
+Q1=h1-h_f6;
+
+disp("(i) Efficiency of cycle =")
+n_cycle=W_T/Q1;
+disp(n_cycle)
+
+SR=3600/W_T; //Steam rate
+disp("Steam rate =")
+disp(SR)
+disp("kg/kWh")
+
+
+T_m1=(h1-h_f7)/(s1-s7);
+
+T_m1r=(h1-h_f4)/(s1-s4); //Without regeneration
+
+dT_m1=T_m1-T_m1r;
+disp("Increase in T_m1 due to regeneration=")
+disp(dT_m1)
+disp("0C")
+
+W_Tr=h1-h3; //Without regeneration
+SR1=3600/W_Tr; //Steam rate without regeneration
+dSR=SR-SR1; 
+disp("Increase in steam rate due to regeneration=")
+disp(dSR)
+disp("kg/kWh")
+
+n_cycle1=(h1-h3)/(h1-h_f4); //without regeneration
+dn_cycle=n_cycle-n_cycle1;
+disp("Increase in cycle efficiency due to regeneration")
+disp(dn_cycle*100)
+disp("%")
-- 
cgit