Chemical Engineering - Chemical Engineering Thermodynamics - Discussion

Discussion Forum : Chemical Engineering Thermodynamics - Section 8 (Q.No. 3)
3.
__________ decreases during adiabatic throttling of a perfect gas.
Entropy
Temperature
Enthalpy
Pressure
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
3 comments Page 1 of 1.

Chayanika said:   5 months ago
Pressure always decreases for the positive or negative of the joule Thompson effect.

For real gas:

Dt/dp>0 cooling, temperature decrease Pressure decreases
Dt /dp<0 heating, temperature increases pressure decreases.
Dt/dp = 0 -ideal gas.
For ideal gas pressure decreases but temperature has no effect or change.

Mtjsaikia said:   11 months ago
Why does temperature not decrease? Please explain.

Pawan Kumar Sharma said:   2 years ago
During Throttling under adiabatic conditions, the pressure energy decreases because some of the pressure energy gets lost as frictional losses thereby increase in intermolecular energy.

Hence always there will be a loss in pressure energy thereby reducing the pressure.
(2)

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