chemical engg thermodynamics 2 min read
Carnot’s Theorem
This theorem states that no engine working between two given temperatures can be more efficient than a reversible engine working…
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Reversible and Irreversible Process
The reversible process is the ideal process which never occurs, while the irreversible process is the natural process that is…
chemical engg thermodynamics 2 min read
What is Kelvin Planck Statement?
It states that “It is impossible to construct a device which operates on a cycle and produces no other effect than…
chemical engg thermodynamics 6 min read
What is the Second Law of Thermodynamics?
The laws of thermodynamics describe the relationships between thermal energy, or heat, and other forms of energy, and how energy…
chemical engg thermodynamics 3 min read
Heat Engine and Heat Pumps
One of the most important things we can do with heat is to use it to do work. Do you…
chemical engg thermodynamics 1 min read
Mollier Diagram for Water-Steam
The diagram below can be used to determine enthalpy versus entropy of water and steam. The Mollier diagram is useful…
chemical engg thermodynamics 3 min read
Phase Diagrams of Pure Substances:
In thermodynamics, a system is a region of space of which we have some interest. Often the system will consist of one…
chemical engg thermodynamics 1 min read
COMPRESSIBILITY FACTOR
Compressibility factor, usually defined as Z = pV/RT, is unity for an ideal gas. It should not be confused with…
chemical engg thermodynamics 1 min read
What is the state principle for simple compressible systems?
Definition of the state principle For a simple compressible system, values for any two independent intensive properties determine the values of all other intensive…
chemical engg thermodynamics 1 min read
What is a Phase In Substance?
These are Chemical Substances which will be ‘phased in’ to the REACH regulation. They fall into one of three categories:…
chemical engg thermodynamics 3 min read
Principle of Corresponding States (PCS)
The principle of Corresponding States (PCS) was stated by van der Waals and reads: “Substances behave alike at the same…
chemical engg thermodynamics 6 min read
Pure Substances
Phase Change and Property Diagrams In this chapter we consider the property values and relationships of a pure substance (such…