Transcript The retrospect of the science and the thermodynamics

The Advanced Chemical
Engineering Thermodynamics
The retrospect of the science and
the thermodynamics
Q&A -1-
9/16/2005(1)
Ji-Sheng Chang
Chemistry

What the contents in the course of
Chemistry?

Study the solid, liquid and gas states of
substance relation with temperature.
Physical Chemistry

What the contents in the course of
Physical Chemistry?

Described the chemical behavior of pure
substance or mixtures by the physical
laws.
Thermodynamics

What the contents in topic of
Thermodynamics?

The study of the states or behaviors of
substance relation to the energy.
Chemical Engineering
Thermodynamics

What the contents in the course of
Chemical Engineering
Thermodynamics?


Calculating the work requirement and
heat transfer to a series of chemical
engineering process, a plants.
Prediction or estimation the composition
in each phase at equilibria states.
 Phase equilibrium problems


Chemical equilibrium
Physical equilibrium
Advanced Chemical Engineering
Thermodynamics

What the contents in the course of
Advanced Chemical Engineering
Thermodynamics?


Study the phase equilibriua behavior.
Calculate the composition of a system at
equilibrium.
Mathematics

What the role of the Mathematics in
science and engineering?

Described the behavior of universal by
equations, a mathematic formulas.


laws
Solving the scientific and engineering
problems by mathematic algorithm
Degrees of freedom

Degrees of freedom





How
How
How
How
How

free
free
free
free
free
of
of
of
of
of
a
a
a
a
a
system?
substance?
mixtures?
operation process?
problems?
Using a number to tell us how free of a
problems.
Degrees of freedom

In the views of Mathematics.


The variables and independent
equations
A character, a symbol

Variables


x, y, z, w …
Coefficients, constants or parameters


a, b, c, d …
R, gas constant
Degrees of freedom

In the views of Chemical Engineering
Thermodynamics.

The thermodynamics properties of
constituent substances in a system.
Degrees of freedom

In an engineering problems.

For a process or an unit of operations
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

Operation conditions
Properties of each species
Properties of mixtures
The composition of a phases