ME 223 Spring 2013
Assignment #2
Problem 2-20
We construct the plot requested in the problem statement - namely a plot of the temperature of the heater wire
as a function of wire diameter, for fixed energy input to the wire. We start by defining the quant
ME 223 2013
Assignment #5
Determination of Minimum
Insulation Thickness for
Building
1. Derivation of the Temperature Equation
In this notebook we determine the minimum thickness of insulation required in a storage building. The
design constraint is that
ME 223 2013
Assignment #6 Solutions
Problem 5-17 (b)
Here we solve the nodal equations derived by hand. We start by entering the parameter values.
In[1]:=
d = 10.-2 H* m *L;
L = 0.05 H* m *L;
k = 240. H* WmC *L;
h = 250. H* Wm2 C *L;
Tb = 350. H* C *L;
T
ME 223 2013
Assignment #7 Solutions
Problem Statement
(100 points) In this problem, you will use finite difference methods to solve for the transient conduction
in a plane slab.The thickness of the slab is L = 6 cm. The slab is stainless steel, with therm
ME 223 Spring 2013
Assignment #3
Problem 3-25
We use Mathematica to solve the two simultaneous equations for the temperatures of the inner and outer
surfaces of the glass. We start by defining the parameters and their values. We include comments, set off
ME 223 2013
Assignment #10 Solutions
Problem 8-79
Problem Statement
8-79 (25 points) To cool a storehouse in the summer without using a conventional air-conditioning
system, the owner decides to hire an engineer to design an alternative system that will m