Entropy production
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Entropy production is the amount of entropy which is produced during heat process to evaluate the efficiency of the process.
Rudolf Clausius
Fig. 1 General representation of an inhomogeneous system that consists of a number of subsystems. The interaction of the system with the surroundings is through exchange of heat and other forms of energy, flow of matter, and changes of shape. The internal interactions between the various subsystems are of a similar nature and lead to entropy production.
Heat engine and refrigerator 01
Joule expansion
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The Joule expansion is an irreversible process in thermodynamics in which a volume of gas is kept in one side of a thermally isolated container, with the other side of the container being evacuated. T
A free expansion of a gas can be achieved by moving the piston out faster than the fastest molecules in the gas.
