Compressibility Factor and Compressibility Charts | Thermodynamics | (Solved examples)

[@matiaspedersen8616]

I’m in my 4 semester in mechanical engineering, and I’m learning more watching your videos then i do in lectures. Keep up the good work 🙌🏽🙌🏽

[@QuestionSolutions]

Thank you for your kind comment. Glad to hear that these videos are helpful :)

[@nahommerk9493]

Same here, bro 😵‍💫

[@JamesVestal-dz5qm]

I got 20 for the reduced pressure of argon at -130c and density 0.910 grams per cubic centimeter. The table and graph for the compressibility factor only has reduced pressures between 0 and 10. I used hard sphere equation of state. Pressure was determined using the sigma hard sphere radius and number density.

[@QuestionSolutions]

Not sure where you're referring to, but it seems like you got what you needed :)

[@JamesVestal-dz5qm]

@QuestionSolutions no I didn't get what I needed. I need to write a spreadsheet today to calculate a Lenard Jones parameter for a radial distribution function and I'm worried I won't get it. The Matlab code on the course website says 5 errors and I dont know how to fix it.

[@QuestionSolutions]

@@JamesVestal-dz5qm So if you don't know how to fix it, it's probably a good idea to see your professor or your TA and get the help you need. Best wishes!

[@JamesVestal-dz5qm]

@@QuestionSolutions my professor loves to cap the office hour to 1 hour. Get out of my office I have another student to work with says the professor. But I haven't figured it out yet say I and he says try again in two business days!

[@QuestionSolutions]

@@JamesVestal-dz5qm Wow, never heard that before, must be a really busy professor. Is there a TA you can get help from? Or a friend who already worked on the project?

[@limecloud8522]

In a previous video you mentioned that P(v) = RT was the formula used for specific volume and that PV = MRT was the formula used for volume. How comes when using the first formula stated you treat it as normal volume and go one step further to find the "specific volume". Is this just the even more specific volume accounted for errors?

[@QuestionSolutions]

Both equations are just different variations of the ideal gas law. You can derive either from each other, as long as you associate them with the total mass and molar mass of a gas. When we use Pv=rt, that's with molar volume. This is used when we don't know the amount of gas, and we just want to know the properties of a gas without it being a specific mass or a specific amount, where as the other is used when we know a mass or mass flow rate. The first uses specific volume, so small "v" and second uses volume, large "V." To see how these are derived, please kindly check your textbook on the chapter about the ideal gas law.

[@cardempire360]

Keep on keeping on

[@QuestionSolutions]

Will do my best 👍👍

[@ledonlaloo1160]

My hero 🙌

[@QuestionSolutions]

Aww, thanks!

[@ledonlaloo1160]

@@QuestionSolutions 🐐

[@vigneshwaranrm6277]

Pls try to include compressible flow as well , in this playlist 🙏

[@QuestionSolutions]

That's a few chapters ahead :)

[@vigneshwaranrm6277]

All playlists in your channel is a killer💥

[@QuestionSolutions]

@@vigneshwaranrm6277 Thank you very much! :)

[@manexomega]

Wow thank you.

[@QuestionSolutions]

You are very welcome!

[@joshuacharlery5826]

I remember this 😃

[@QuestionSolutions]

Somethings are hard to forget 😀😀

[@Jon-xu7jl]

Why can't we just use our answers from mass flow rate and volume flow rate, and do (mass flow rate/volume flow rate) to get the density? Instead of P/RT on the pipe example.

[@QuestionSolutions]

You can use any method you like to get to an answer. In fact, there are multiple ways to get to the same answer, I only showcase one way, or another. So you can do it however you like 👍

[@Jon-xu7jl]

@@QuestionSolutions thanks for the answer and for the amazing videos!

[@QuestionSolutions]

@@Jon-xu7jl You're very welcome!