ChE-1800: Approaches to Chemical Engineering Problem Solving Homework #1

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ChE-1800: Approaches to Chemical Engineering Problem Solving
Homework #1
Due 01/22/15 at 3:05 pm
Note: This homework assignment does not require and electronic file. You must
print your solutions and that will be your submission.
1. Perform the following computations in the command window and then print the
results.
Define the following variables: table_price = $256.95 and chair_price = $89.99
Then change the display format to bank and:
a) Evaluate the cost of two tables and eight chairs
b) The same as part a) but add 5.5% sale tax
(10 points)
2. The pressure drop for a fluid flowing in a straight pipe is given by the equation
below:
2fLρ v2
ΔP =
D
where ΔP = the pressure drop in the pipe (N/m2)
f = friction factor = 0.0025 (dimensionless)
L = pipe length = 20 m
ρ = fluid density = 920 kg/m3
v = fluid velocity = 2 (need to define appropriate units)
D = pipe diameter = 1 (need to define appropriate units)
Perform the calculation of the pressure drop for the fluid using the command
window and print the results. It is important that you use all the variables
specified above in your calculations.
(10 points)
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