3 replies to this topic

[engware]

Mark:

For an isentropic compression and expansion, the entropy change is equal to zero.

For a perfect gas that follows the ideal gas state equation, the temperature and pressure relationship is as follows:

T2/T1 = (p2/p1)^(k-1)/k

Thanks,

Gordan

[Art Montemayor]

Mark:

Before I can discuss and preach on Thermodynamics, I (& I believe, the rest of the Forum) need to know what is your academic (& work) experience with Thermodynamics. What level of Chemical (or other) Engineering do you find yourself in at present? Have you sucessfully concluded such Thermodynamic-related courses such as:

Physics, Physical Chemistry, Chemical Engineering Thermodynamics, Mechanical Engineering Thermodynamics, etc. etc.,?

It will be extremely difficult to discuss Thermodynamic properties and much less Thermodynamic cycles and processes unless you have already had a firm and thorough exposure to Thermo courses. Otherwise, this thread will fail miserably in trying to identify your needs and help you out. You are inquiring about Entropy and about Isentropic processes. You should already have a mastery of the Mollier or T-S Diagram and be able to follow the cycle path on the Diagram.

Can you please furnish the above information in order to be able to tailor our response to your level of preparation? I'm sure a lot of good engineers on this Forum are willing to help you out if they can figure out what you need to know and what you can understand with respect to Thermodynamics.

I'll await your response.

[engware]

Art:

Thanks for your post and additional questions that you asked in order to provide a complete answer to the question.

It is good to have you and help us, Forum members, deliver good feedback to asked questions.

I have to admit that when trying to provide answers, I do try to make it maybe too much straight forward.

Thanks,

Gordan