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

---
 1244/CH7/EX7.4/Example74.sce | 58 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100755 1244/CH7/EX7.4/Example74.sce

(limited to '1244/CH7/EX7.4')

diff --git a/1244/CH7/EX7.4/Example74.sce b/1244/CH7/EX7.4/Example74.sce
new file mode 100755
index 000000000..23d7d3bfc
--- /dev/null
+++ b/1244/CH7/EX7.4/Example74.sce
@@ -0,0 +1,58 @@
+
+
+// Display mode
+mode(0);
+
+// Display warning for floating point exception
+ieee(1);
+
+clc;
+disp("Principles of Heat Transfer, 7th Ed. Frank Kreith et. al Chapter - 7 Example # 7.4 ")
+
+//Diameter of pipe in m
+D = 7.62/100;
+//Diameter and length of cylinder in m
+d = 0.93/100;
+l = 1.17/100;
+//Initial temperature in degree C
+Ti = 50;
+//Final temperature in degree C
+Tf = 350;
+//Temperature of pipe surface in degree C
+Tp = 400;
+//Therefore film temp. at inlet in degree C
+Tfi = (Ti+Tp)/2;
+//Therefore film temp. at outlet in degree C
+Tfo = (Tf+Tp)/2;
+//Average film temp. in degree C
+Tf = (Tfi+Tfo)/2;
+
+//At this film temperature
+//Kinematic viscosity in m2/s
+nu = 0.0000482;
+//Thermal conductivity in W/mC
+k = 0.042;
+//Density in kg/m3
+rho = 0.6;
+//Specific heat in J/kgC
+c = 1081;
+//Prandtl number
+Pr = 0.71;
+//Flow rte of gas in kg/h is
+m = 5;
+
+//Superficial velocity in m/h
+Us = m/((((rho*%pi)*D)*D)/4);
+//Cylinder packaging volume in m3
+V = (((%pi*d)*d)*l)/4;
+//Surface area in m2
+A = (((2*%pi)*d)*d)/4+(%pi*d)*l;
+//Equivalent packaging dia in meter
+Dp = (6*V)/A;
+
+//REynolds number based on this dia
+Re = ((Us*3600)*Dp)/nu;
+//From eq. 7.23
+disp("Heat transfer coefficient in W/m2C is")
+//Heat transfer coefficient in W/m2C
+h = (14.3*k)/Dp
-- 
cgit