Notesale: Turn your study into money

Document Preview

Extracts from the notes are below, to see the PDF you'll receive please use the links above

---

1

CH-107

Lecture

4

CHEMICAL
ENGINEERING
THERMODYNAMICS-I
Dr
...
M Smith, 7th Edition
...

• “Thermodynamics, an Engineering
Approch” by Yunus A Cengel
...


CHEMICAL ENGINEERING THERMODYNAMICS-I

2

Faculty of Chemical Engineering, NEDUET

Internal Energy

Equation for Process Calculation for Ideal
Gas
...

Work of mechanically reversible closed system
process
...

Substitution for dw and solve for dQ yeilds an
equation valid for an ideal gas
...
Working equations depends
on which pair of these variables is selected
...
We can eliminated
or replace any variable by using ideal gas equation
...

 Work for which process is greater
...

P1V1= P2V2=PV=Constant
10

CHEMICAL ENGINEERING THERMODYNAMICS-I

Faculty of Chemical Engineering, NEDUET

Ideal Gas

Comparision B/W Isothermal & Adiabatic
Process

Value of Cp is
Greater than Cv
for
All real gases 11
CHEMICAL ENGINEERING THERMODYNAMICS-I

Faculty of Chemical Engineering, NEDUET

1st Law

Calculating work for Adiabatic Process

This is the general equation for adiabatic
expansion and compression process
...

Do not get confused with gama and K both are
similar thing, both books uses different symbol for
representing ratio of Cp/Cv
...

 A process in which more than one process involve is defined as
Polytropic if it follows the relation:
 Both the processes in previous exanple can be considered
polytropic
...

13

CHEMICAL ENGINEERING THERMODYNAMICS-I

Faculty of Chemical Engineering, NEDUET

1st Law

14

CHEMICAL ENGINEERING THERMODYNAMICS-I

Faculty of Chemical Engineering, NEDUET

1st Law

15

CHEMICAL ENGINEERING THERMODYNAMICS-I

Faculty of Chemical Engineering, NEDUET

Enthalp

16

CHEMICAL ENGINEERING THERMODYNAMICS-I

Faculty of Chemical Engineering, NEDUET

Enthalp

Home Work Problem Example 3

---