Ok, I have a question. Is it possible to fully model the conversion and the transfer of energy using only mechanical waves propagating through matter? Like say you have an energy conversion path; Mechanical => Electrical => Chemical => Thermal => Mechanical. So from Mechanical to electrical, there would be a turning of a motor to transfer electricity right. So when an individual spins the motor they are actually sending small mechanical waves through the solid in order for them to rebound and reflect to create a turning motion. This, in turn, causes a rotation which induces an electrical current which is actually just the movement of electrons through a wire which can be seen as a free electrical wave propagating through the wire. Electrical to the chemical is just the reversing of a certain reaction, however, this, in turn, causes the chemical atoms and molecules to move together and from the outside can be seen as a propagation pattern. Chemical to thermal is just these chemical bonds breaking which creates a wave of fast-moving particles which creates heat and thermal energy. Finally, Thermal energy to mechanical energy would just be the propagating particles moving and hitting the other particle in a material transferring their energy thus creating mechanical waves from the beginning.

Also when I say Mechanical Wave I mean just modeling the energy as some form of wave being transferred.

No of course not.

Have you not considered open systems or quasi closed systems?

I have not, should have done more research. Thanks studiot