A steam engine depends on what kind of energy conservation?

A steam engine operates based on the principle of energy conservation by converting thermal energy from steam into mechanical energy. The heat energy generated by burning fuel heats water, producing steam that expands and moves pistons or turbines. This transformation adheres to the law of conservation of energy, which states that energy cannot be created or destroyed but can only change forms. Ultimately, the steam engine efficiently transforms the thermal energy into work while adhering to these fundamental energy conservation principles.