1 files changed, 24 insertions, 0 deletions
diff --git a/965/CH2/EX2.39/39.sci b/965/CH2/EX2.39/39.sci
new file mode 100644
index 000000000..11dad8cb6
--- /dev/null
+++ b/965/CH2/EX2.39/39.sci
@@ -0,0 +1,24 @@
+clc;
+clear all; 
+disp("Heat loss in pipe")
+ri=0.04;//m inner radius of pipe
+ro=0.05;//m outer radius of pipe
+ti=160;// degree C temperature of hot gases
+to=25;// degree C temperature of space in which the pipe is located
+k=180;// W/(m*C)
+L=1;//m
+
+Q=(ti-to)/(log(ro/ri)/(2*3.1416*k*L))
+disp("W/m",Q,"the heat loss through pipe per unit length =")
+
+r=(ri+ro)/2;//m midway between inner and outer surfaces
+r
+disp("m")
+R=(log(r/ri))/(2*3.1416*k)
+t=ti-Q*R;
+disp("degree C",t,"temperature at a point halfway inner radius of pipe =")
+
+Am=2*3.1416*L*(ro-ri)/log(ro/ri);//m^2
+disp("m^2",Am,"equivalent log-mean area =")
+
+