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

Learn how to read a compressibility chart, how to figure out the compressibility factor, what reduced pressure, reduced temperature, and pseudo reduced specific volume is. We also solve a few problems step by step to learn how to use a compressibility chart.
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Intro (00:00)
Determine the specific volume of superheated water vapor (02:22)
Saturated water vapor at 350°C is heated at constant pressure (04:56)
Carbon dioxide gas enters a pipe at 3 MPa and 500 K (09:26)
Books used:
📘Çengel Yunus A. and M. A. Boles, Thermodynamics: an engineering approach. New York, NY: McGraw-Hill Education, 2016.
📘C. Borgnakke and R. E. Sonntag, Fundamentals of thermodynamics. Hoboken, NJ: Wiley, 2019.

[@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 😵‍💫

[@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 👍👍

[@user-ed1xc7tm4j]

Wow thank you.

[@QuestionSolutions]

You are very welcome!

[@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! :)

[@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!