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Thermodynamics 2

By : Asad Ali Arshad

To download the word file click below

thermo-lab-1.docx

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Thermodynamics
Branch of science that studies changes in energy.
Temperature, Pressure, Volumeare driving forces for energy.
Types of Heat
(1)   Latent Heat:
Related to phase change i.e. melting of ice. Boilers, Evaporator.
(2)   Sensible Heat:
Heat can be sensed (No phase change) e.g. Heaters. Air conditioners.
Laws of Thermodynamics
First Law of thermodynamics:
                                                Energy can neither be created now destroyed but it can be changed from one form to another.
Also called law of conservation of energy.
ein-eout=constant
ein=eout
ΔU=Q+W
Q= Heat exchanged b/w system.
W=Work done.
Text Box: Work done on the system is Positive
Work done by the system is Negative
 






                                                                                       
Second Law of thermodynamics:
                                                       Entropy of a system also increases never decreases.
Entropy:
               Measure of disorder of energy of a system.
Zeroth Law of thermodynamics:
Kelvin Statement
No device can be worked with single reservoir. .e.g. car-engine.
Clauses Statement
Heat cannot be transferred from low to higher reservoir. E.g. refrigerator

Second Law of thermodynamics:
                                                            For a pure crystalline structure entropy is zero at absolute zero.


Microscopic Properties:
                                                  Study of each atom or molecule separately.
Macroscopic properties:





                                                  Study of each atom or molecule as whole average.
System:
Anything under consideration is system.
Surrounding:
Everything except system is surrounding.
Boundary:
The separation b/w system and surrounding is boundary.
Closed System:
A fixed amount of mass is chosen for study.
Open System:

System in which mass, heat, work or volume can also changes etc.

Thermodynamics Tutorial

By : Asad Ali Arshad

In the following slides we are going to discussed the following topics in detailed
  • Concept of Energy
  • Thermodynamics 
  • Application of thermodynamics
  • First and Second law of thermodynamics
  • System,Surrounding and boundary 
  • Closed, Open and Isolated System 
  • Different Units

Also some of the numericals related to above topics are also given in the slides for more information related to the thermodynamics you can also comment here and don't forget to follow the blog for more lectures



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2nd lecture of thermodynamics 

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