Throttling process - thermodynamics, Mechanical Engineering

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Throttling Process:

The expansion of gas through an orifice or partly opened valve is called as throttling.

q₁-2 = 0 and w₁-2 = 0

Now 2112_Throttling Process.png

The throttling process is constant enthalpy process.

If readings of pressure and temperature of Joule

Thompson porous plug experiments are plotted,

h₁ = h₂ = h₃ = h₄ = h₅

The slope of constant enthalpy curve is called as Joule

Thompson coefficient. p = dT/dP

1307_Throttling Process1.png

For perfect gas, p = 0.

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