Write the application of thermodynamic​

One of the most important things we can do with heat is to use it to do work for us. A heat engine does exactly this—it makes use of the properties of thermodynamics to transform heat into work. Gasoline and diesel engines, jet engines, and steam turbines that generate electricity are all examples of heat engines.

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.