Chemical EngineeringThermodynamics
|
Chemical Engineering Thermodynamics is the relationship between heat, work, and systems in energy processes. Thermodynamics consists analytical and theoretical methods that can be applied to machines for energy conversion.
Laws of thermodynamics
- The zeroth law of thermodynamics
The Zeroth law of Thermodynamics says that that if A is in thermal equilibrium with B, and also B is in thermal equilibrium with C, then C is also in thermal equilibrium with A and vice versa.
|
|
For example the length of a mercury column can be used as a measure to compare the temperatures of the two other objects.
- First law of thermodynamics, i.e Conservation of Energy LAW
Suppose a system undergoes a process by heat and work transfer then the net heat supplied Q and the net work input W will be equal to the change of internal energy of the system. i.e
Delta ( U ) = U2 – U1 = Q + W
Here U1 & U2 are internal energy of the system ar state1 & 2, respectively. If system undergoes in a complete cycle then U1 = U2,
This leads to Q + W = 0
- Second law of thermodynamics
The second law of thermodynamics says that there is no heat engine which can be more efficient than a reversible heat engine working between two fixed temperature i.e.
n< n(max) = n(c )
We can say W will be restricted to an upper limit Wmax i.e.
W < W(max) = Q.n(c )
- Thermodynamics Applications
Gas turbine, Compressor, Thermodynamic cycle, Heat engines, Turbines , Steam turbine, Working fluid, Ideal gas, System
- Thermodynamics processes:
Isentropic, Isometric, Isobaric, Isothermal, Adiabatic, Adiabatic mixing, Throttling, Free expansion, Polytropic
- Thermodynamics Heat transfer:
Heat exchangers, Heat flow through a pipe, Heat transfer, Heat, Heat flow through a wall
|
|
