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+clear;

+clc;

+//Example 3.1 [Heat Loss through a Wall]

+

+//assumptions:- 

+//1)Heat transfer through the wall is steady 

+//2)Heat transfer is one-imensional

+//Properties: 

+k=0.9;//[W/m.K]

+disp("W/m.K",k,"The thermal conductivity is given to be")

+//Heat transfer through the wall is by conduction 

+A=(3*5);//[m^2]

+disp("m^2",A,"The area of the wall is")

+T1=16;//temperature of inner wall[degree Celcius]

+T2=2;//Temperature of Outer wall[degree Celcius]

+delta_T=T1-T2;//Temperature Gradient[degree Celcius]

+L=0.3;//Length of wall along which heat is being transferred[m]

+R_wall=L/(k*A);//[degree Celcius/W]

+disp("degree Celicus/W",R_wall,"Thermal Resistnace offered by the wall is")

+Q_=(delta_T/R_wall);//[W]

+disp("W",Q_,"The steady rate of heat transfer through the wall is ")