What is the Best Thermodynamics Book for Bachelor's Study?

[immortalsameer13]

but at the same time give true essence of fundamental quantities i.e. what truely is heat?
I have read couple of books where each book gives definition of quantities but not its essence.

 

[vanhees71]

My favorite in this respect is

R. Becker, Theory of Heat, Springer (1967)
https://doi.org/10.1007/978-3-642-49255-6

 

[Demystifier]

Zemansky and Dittman, Heat and Thermodynamics

 

[russ_watters]

Engineering Thermodynamics, Cengel & Boles