The document discusses the Joule-Thomson effect, where the temperature of a gas changes when its pressure changes suddenly through a valve or porous plug. This phenomenon was first observed by James Joule and William Thomson in 1852. For the Joule-Thomson effect to occur, the process must be adiabatic with no exchange of heat, the system must be insulated, and the pressure must fall rapidly. Applications of the Joule-Thomson effect include refrigeration and liquefying gases in petrochemical and cryogenic industries.
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Henry Law, Its Limitation and Active MassVinod Dahiya
https://youtu.be/rxmovBZQF6g
In this video you will study about Henry Law, Its limitations, What is Active Maas, how it is calculated with the help of example
hermodynamics is the branch of physics that has to do with heat and temperature and their relation to energy and work. The behavior of these quantities is governed by the four laws of thermodynamics, irrespective of the composition or specific properties of the material or system in question. The laws of thermodynamics are explained in terms of microscopic constituents by statistical mechanics. Thermodynamics applies to a wide variety of topics in science and engineering, especially physical chemistry, chemical engineering and mechanical engineering.
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1. JOULE -THOMSON COOLING EFFECT
Presented By
Md. Shahanawaj Ansari
[Ph.D. Course Work]
Dr. C.V. RAMAN UNIVERSITY ,KOTA,BILASPUR (C.G.)
2. WHAT IS JOULE- THOMSON EFFECT ?
# Change in temperature of a gas occurs when its
pressure changes suddenly through a valve or
porous plug.
# This phenomena was first observed by James
Joule and Thompson in 1852. Hence it is called
JOULE-THOMSON EFFECT
Dr. C.V. RAMAN UNIVERSITY ,KOTA,BILASPUR (C.G.)
5. CONDITIONS FOR JOULE- THOMSON EFFECT
# System should be insulated
# It is an adiabatic process
# Exchange of heat, Q=0
# Pressure should fall rapidly
Dr. C.V. RAMAN UNIVERSITY ,KOTA,BILASPUR (C.G.)
6. MATHEMATICAL FORMULA FOR JOULE –THOMSON EFFECT
H = U + PV
H= Enthalpy
P= Pressure
V= Volume
U= Internal Energy
# Total enthalpy of the real remains constant.
Dr. C.V. RAMAN UNIVERSITY ,KOTA,BILASPUR (C.G.)
8. APPLICATIONS OF JOULE-THOMSON EFFECT
#In refrigerator as cooling
# In petro-chemical Industry used to
liquefy the gases
# In cryogenic engines to liquefy
nitrogen and oxygen gases
Dr. C.V. RAMAN UNIVERSITY ,KOTA,BILASPUR (C.G.)
9. CONCLUSION
# It describes the enthalpy of the
gases.
# It supports the principle of
conservation of energy
# Heat-Pump engines are developed
due to this effect.
Dr. C.V. RAMAN UNIVERSITY ,KOTA,BILASPUR (C.G.)
10. Dr. C.V. RAMAN UNIVERSITY ,KOTA,BILASPUR (C.G.)
THANK YOU
![JOULE -THOMSON COOLING EFFECT
Presented By
Md. Shahanawaj Ansari
[Ph.D. Course Work]
Dr. C.V. RAMAN UNIVERSITY ,KOTA,BILASPUR (C.G.)](https://image.slidesharecdn.com/joule-thomsoncoolingeffect-200711101628/85/Joule-thomson-cooling-effect-1-320.jpg)
