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 --- 530/CH2/EX2.3/example_2_3.sce | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100755 530/CH2/EX2.3/example_2_3.sce (limited to '530/CH2/EX2.3/example_2_3.sce') diff --git a/530/CH2/EX2.3/example_2_3.sce b/530/CH2/EX2.3/example_2_3.sce new file mode 100755 index 000000000..23f936f80 --- /dev/null +++ b/530/CH2/EX2.3/example_2_3.sce @@ -0,0 +1,37 @@ +clear; +clc; + +// A Textbook on HEAT TRANSFER by S P SUKHATME +// Chapter 2 +// Heat Conduction in Solids + +// Example 2.3 +// Page 31 +printf("Example 2.3, Page 31 \n\n") + +h_w=140; // heat transfer coefficient on water side, [W/m^2 K] +h_o=150; // heat transfer coefficient on oil side, [W/m^2 K] +k=30; // thermal conductivity [W/m K] +r_o=0.01; // inner diameter of GI pipe on inside +r_i=0.008; // outer diameter GI pipe on inside +l=1; // [m] , per unit length + +// Thermal resistance of inner GI pipe +R_inner_GI=log((r_o/r_i))/(2*%pi*k*l); + + +// Thermal resistance on the oil side per unit length +R_oilside=1/(h_o*%pi*2*r_i*l); + + +// Thermal resistance on cold water side per unit length +R_waterside=1/(h_w*%pi*2*r_o*l); + + +// we see thermal resistance of inner GI pipe contributes less than 0.5 percent to the total resistance + + +printf("Thermal resistance of inner GI pipe = %f K/W \n",R_inner_GI); +printf("Thermal resistance on the oil side per unit length = %f K/W \n",R_oilside); +printf("Thermal resistance on cold water side per unit length = %f K/W \n",R_waterside); +printf("So, Engineer in-charge has made a bad decision"); \ No newline at end of file -- cgit