Moving Boundary Work | Thermodynamics | (Solved Examples)

Learn about finding moving boundary work in normal and polytropic processes. We solve a few examples step by step so you can grasp the new equations covered.
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Intro (00:00)
Polytropic Process (02:30)
The volume of 1 kg of helium in a piston-cylinder device (03:23)
A piston-cylinder device initially contains (05:14)
A gas is compressed from an initial volume (06:37)
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.

[@terrancepage9163]

You made a boring textbook presentation into a very interesting and intuitive video! Thank you so much for these!

[@QuestionSolutions]

You're very welcome!

[@Vivek-li1io]

You are doing a great work please do consider making mechanics of materials problems also

[@QuestionSolutions]

Thank you very much. It's on my list to do :)

[@joshuacharlery5826]

Very important concept to understand!

[@QuestionSolutions]

Yes 👍

[@nasseral-kharraz5197]

Thank you so much for such a great video

[@QuestionSolutions]

You're very welcome! 👍

[@Football-bb7zf]

Robert recommended this channel for me and wish I knew this early

[@QuestionSolutions]

I hope these videos are helpful to you. 😀

[@phoperdox_sore]

I am a simple student, I see a video of yours that covers a topic that I am weak in, I click. Thanks for the video btw

[@QuestionSolutions]

I hope they are helpful to you :) Best wishes with your studies!

[@s.vikramaadithyan3684]

Thank you, If possible do make a video about Entropy generation, Maximum available work and its types

[@QuestionSolutions]

So it's really hard to jump to specific sections because most of it relies on previous parts. The course material is built up one at a time. Eventually, I will get to those, but first, I have to create the foundation for students to understand the new material :)

[@ibnrashid6457]

I have question, why do both calculate area and integration for the last question sir?

[@QuestionSolutions]

The question asks us to find it using the area and by integration.

[@ramakrishna-kw5yl]

How pressure remains constant during compression?

[@QuestionSolutions]

You can do it in many ways, but in general, but removing/adding heat on a system is used to maintain the desired pressure.

[@user-eg2yb6kx4x]

7:14

[@QuestionSolutions]

?

[@no_nameington]

What if i only know pressure n and initial temperature

[@QuestionSolutions]

I am not sure of your question, it's too vague to answer. What are you trying to find?

[@no_nameington]

@@QuestionSolutions argon is compressed ina polytropic process with n=1.2 from 120 kPa and 10C to 800kPa in a piston cylinder. Determine work and heat xfer .

[@Ashjj1935]

From where p2v2=mrt2 comed

[@QuestionSolutions]

I don't know where you're referring to. Please use timestamps.