Recommendation for project related to thermodynamics

[MatinSAR]

TL;DR Summary: I'm currently studying physics (undergrad level). I want to find a project related to thermodynamics to present it to my professor.

I am reading this book: Heat and Thermodynamics: An Intermediate Textbook by Mark Zemansky and Richard Dittman
https://www.amazon.com/dp/0070170592/?tag=pfamazon01-20

These are the ones's which the professor suggusts:
1. Make a Diesel Engine
I didn't find any source to use.
2. Brownian Carnot engine
I have founded an article: https://www.nature.com/articles/nphys3518
But's it's really complicated for me. I don't know why he suggust us to read about this engine in nature!!! Can someone introduce another source?

There are other projects but I don't remember them right now ... I will ask him about them next week if I don't find a project.
Until then, I would appreciate it if you could guide me to find other projects which are easier than making an engine or understanding an article in Nature Physics.

 

[Lord Jestocost]

A Stirling engine (https://en.wikipedia.org/wiki/Stirling_engine)

See, for example:
“The Fluidyne engine” by Alejandro Romanelli (https://arxiv.org/abs/1812.11100)
“Stirling engine operating at low temperature difference” by Alejandro Romanelli
(https://arxiv.org/abs/2003.07157)

 

[MatinSAR]

A Stirling engine (https://en.wikipedia.org/wiki/Stirling_engine)

See, for example:
“The Fluidyne engine” by Alejandro Romanelli (https://arxiv.org/abs/1812.11100)
“Stirling engine operating at low temperature difference” by Alejandro Romanelli
(https://arxiv.org/abs/2003.07157)

Thank you @Lord Jestocost I will check them.