CHEMICAL PROCESSING
CHAPTER 3 WORKSHEET
Answer the Class Exercises, other than those for which an answer is provided. Some hints
and clarifications/revisions are provided.
3.1 clarification
The term flow rate in the question should be flow velocity (in m/s) as per the equation.
3.3 (?) on page 22
Obviously this is incorrectly numbered, and will be addressed in a revision.
3.2(b) hint
Pumps can operate at different speeds.
3.3 on page 24 answer
You don’t need to do this – see the list of dot points at the bottom of the page.
3.4
Do as per your notes.
3.5 revision
Instead of a Powerpoint, there is a webpage with links to each of these pump animations. See
the Theory Notes page of the subject.
3.6 revision
Instead of doing this question, look at the website below (link also supplied on Theory Notes
page) and classify the valve types below by their mode of operation (one of the four described
on the webpage)
http://www.tlv.com/global/TI/steam-theory/types-of-valves.html
Valve types
 ball
 butterfly
 globe
 gate
 diaphragm