Abstract
Unconventional energy sources cover unusually unconventional energy, with little or no unused, inactive cases and the energy resources available waste form. Figure 3.1 shows unconventional energy sources. For example; extra heavy oil, heavy crude oil and no 4–6 fuel oils are unconventional energy sources because they are used in small amounts or for they not use in the production of diesel fuel and/or gasoline. Natural gas hydrate is an example to inactive energy source due to it has not yet been used in the production of methane. Releasing heats from cooking food in a kitchen or from the flue of a cement factory are waste heats, for examples, because they can be used to generate electricity.Fig. 3.1Unconventional energy sources