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- transformationsis the study of how energy changes from one type to another. The laws of thermodynamics apply to energy and energy conversions.
- ) into another. Any type of energy use must involve some sort of energy transformation.chemical energy, gravitational potential, kinetic from one type (e.g., energy are processes that convert Energy transformations
- Energy cannot be created or destroyed (which is called the conservation of energy); however, it can be transformed from one type into another. In fact, every useful process transforms energy from one form to another. There are many different forms or types of energy. Some examples of everyday energy transformations are:
- Some forms of energy are more useful than others. Using energy always makes it less useful, even though no energy is actually destroyed.
- The least useful form of energy is low-temperature thermal energy. It can still be converted back to a higher-quality form, but useful energy is always lost in this process. Converting energy to a less-useful form and then trying to work backwards never gets 100% of the useful energy back.
- For example, when a car runs, the engine will become hot (thermal energy). The warmth of the engine does nothing to help the car move or go faster. This wasted energy is an unavoidable by-product of converting the car's fuel (chemical energy) into movement ("high-quality" kinetic energy), however it can potentially be used for heating the cabin of the car to slightly increase overall energy efficiency. It is a challenge for all forms of power generation to minimize wasted energy and be as efficient as possible.
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