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/CH15/EX15.18/18.sce | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100755 551/CH15/EX15.18/18.sce

(limited to '551/CH15/EX15.18')

diff --git a/551/CH15/EX15.18/18.sce b/551/CH15/EX15.18/18.sce
new file mode 100755
index 000000000..8b9d02686
--- /dev/null
+++ b/551/CH15/EX15.18/18.sce
@@ -0,0 +1,21 @@
+clc
+m_h=0.2; //kg/s
+m_c=0.5; //kg/s
+t_h1=75; //0C
+t_h2=45; //0C
+t_c1=20; //0C
+hi=650; //W/m^2 0C
+h0=hi;
+cph=4.187;
+cpc=cph;
+
+Q=m_h*cph*(t_h1-t_h2);
+t_c2=m_h*cph/cpc*(t_h1-t_h2)/m_c+t_c1;
+
+theta=((t_h1-t_c1)- (t_h2-t_c2))/log((t_h1-t_c1)/(t_h2-t_c2)); //Logarithmic mean temperature difference
+
+U=hi*h0/(hi+h0);
+A=Q*10^3/U/theta;
+disp("The area of heat exchanger =")
+disp(A)
+disp("m^2")
\ No newline at end of file
-- 
cgit