Thermodynamics
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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. |
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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 )
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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
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