Safety/Ethics
Give some examples of PPE
Gloves, safety glasses, a face mask, and a lab coat
Stream 3 contains O and goes into mixer 1. Stream 4 contains C and H and goes into mixer 1. Stream 5 leaves mixer 1.
What components are present in stream 5?
O, C, and H
x = 10;
What does the semicolon do at the end of this line?
It suppresses output so MATLAB doesn’t print the result.
What type of unit is a cm?
Multiple
Cost to produce = $6/kg
You want a profit of $2/kg.
What selling price achieves this?
$8/kg
What is a Carcinogen?
A substance that causes cancer.
Stream 6 enters a separator. Stream 7 leaves the separator and contains H and C. Stream 8 leaves the separator and contains O and N.
What components are present in stream 6?
H, C, O, and N
1:2:7
What will show in the command window?
[1 3 5 7]
What type of unit is a gallon per minute (gal/min)?
Multiple and Derived
Capital investment = $250,000
Annual profit = $50,000
Find the ROI.
20 % ROI
What is the primary danger of an explosive material?
Fire
Why are purge streams necessary in process flow diagrams?
Any of the following answers are acceptable:
Prevent accumulation of inert or unwanted materials. Maintain steady-state operation. Protect equipment and ensure safety. Control composition in reaction systems.
What is the difference between * and .* in MATLAB?
* = matrix multiplication
.* = element by element multiplication
What type of unit is a cubic meter per second (m3/s)?
Derived
A machine costs $400,000 with a 10-year life.
Using straight-line depreciation, what is yearly depreciation cost?
$40,000 per year
What does the "dead fish" safety icon that Prof. Perry loves indicate?
Environmental/aquatic toxicity
Stream 1 contains B and E and goes into box 1. Stream 2 contains B, E, and D and goes into box 1. Stream 3 contains B, E, and D and leaves box 1.
What type of unit is Box 1?
Box 1 is a mixer
When should you use a while loop instead of a for loop?
Use a while loop when you don’t know how many times the loop must run and when you only a stopping condition.
How many days are in "Four score and seven years"? 1 score is equal to 20 days.
2635 days
Spare pump costs $8,000.
Owning it avoids $2,000/year of downtime losses.
What is the payback time (years)?
4 years
What is the word that defines the moral principles that govern a person's or a group's behavior?
Ethics
Stream 1 contains B, E, F, and S and goes into box 2. Stream 2 contains B, E, F, S, H, and Q and leaves box 2.
What type of unit is box 2?
Box 2 is a reactor
What does this while loop do?
i = 1;
while i < 5
i = i + 1;
end
It increases i until it reaches 5, then stops.
93.61 g water
An evaporator normally makes 150 kg/day, but a part failure causes 3 days of zero production.
Product sells for $8/kg.
What is the revenue lost?
$3,600