Fuel Cell Upgrade

Reuse or regain the energy lost during the process.
Heat transfer is the transition of thermal energy from a heated item to a cooler item, stands to reason put a cold beer out in the sun and it will get warm. When an object or fluid is at a different temperature than its surroundings or another object, transfer of thermal energy, also known as heat transfer, or heat exchange, occurs in such a way that the body and the surroundings reach thermal equilibrium. Heat transfer always occurs from a hot body to a cold one, a result of the second law of thermodynamics. Where there is a temperature difference between objects in proximity, heat transfer between them can never be stopped; it can only be slowed down.