Unit Operations of Chemical Engineering. It is most popular in Chem

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Unit Operation Of
Chemical Engineering
Fluid Mechanics and Heat Transfer
Introduction
 About
the Courses and time scheduling
Lecturing (theory): 14 weeks, 4 classes
each week
 About the Experiments (Contents,
groups, location):6 experiments, 2
groups per class, 2nd floor in building 15
Background
 What
is the text book? Unit Operations of
Chemical Engineering.
 It is most popular in Chem. Eng. major in
USA univ.
 Authors? Warren L. McCabe, Julian C.
Smith and Peter Harriott.
 The Sixth edition
Course Policies & Grading
Standard
 Final
Exam for theory course
 Participation (including attendance,
Assignments) and Midterm Exam)
 Experiment grade based on test and
experimental behavior as well as report.
Learning Approaches
 Mainly
Learning:
 1)process principles;
 2)structure of typical equipment;
 3)design calculations;
 4)selection of typical equipment;
 5)operating methods;
 6)enhancement of unit operations.
Learning Approaches
 For
each of the unit operations, mainly
learning the followings:
 1)Material balances;
 2)Energy/Enthalpy balances;
 3) Heat and Momentum transfer rates;
 5)Operation relationships.
 Preparing
lessons or preview before
class
 →Review after class
 Don't take the course just for the grade.
 Practice makes a master. If you don't
practice, you won't learn it.
History of Chem. Eng.
First period: in the end of 19th century,
Industry Chemistry came out.
 2 Second period: in the beginning of 20th
century, especially in 1923, <Unit
Operations of Chemical Engineering> came
out.
 3 Third period: from 1950-1960, Transport
Phenomena appeared.
1

4
Fourth period: in 1970s, Knowledge
exposition, many subjects joined together.
Lots of new subjects appeared, such as
environmental chemical engineering,
biochemical engineering, energy chemical
engineering.
 5 Fifth period: from 1980s-1990s, MIT
suggested Integrated chemical engineering,
and regressive engineering.
 6 Sixth period: in the 21st century. Green
chemistry, biochemorphic Chem. Eng. ideas
was put forward.
Chapter 1 Units and Dimensions
1 Units
 SI, English (British), Engineering systems
 2 Dimensions
 Definition: each primary quantity may be
represented by a letter which symbolizes that
quantity, this letter is called dimension.
 For SI system, L for length, M for mass, T for
temperature,  for time.
 3 Unit conversion.

 Example:
what is the dimension and unit of
density, in SI system?
 Density = M/L3(dimension)=kg/m3(unit)
 Problem: what is the dimension and unit of
force F or heat capacity Cp, in SI?
 Unit conversion:
 P=760mmHg=?mH2O=?atm=?N/m2
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