How do fuels release their stored energy?

Answer 1

It depends on the fuel. Uranium would be able to produce nuclear energy and ultimately electrical energy. Natural gas can be burned to produce heat and also electricty. Coal and Petroleum products likewise.

Answer 2

Many fuels contain carbon and hydrogen (hydrocarbons) and examples are methane and gasoline, and they are burned with oxygen from the atmosphere.

The carbon in the fuel and the oxygen in the air mainly came from plant life that used the Sun's heat and light to separate out carbon dioxide atoms from the atmosphere and in doing that they stored potential energy that is released in the burning process.

Re-forming the chemical bonds in the carbon dioxide that is produced by burning the fuel releases that energy and produces a lot of heat, and this is why fuel is used. Hydrogen-oxygen bonds are also formed to produce water and this also produces extra heat.

In a engine the heat generates pressure that drives a piston or a turbine blade. Heat engines operate usually at energy efficiencies of 20-50%, in other words, when an engine runs, at least half the energy in the fuel is wasted. For cars it's more like three-quarters.

Answer 3

Fuels provide energy by the results of chemical change. dat is the answer :)

Answer 4

Wood can transfer heat energy by convection

Answer 5

No, it is chemical energy not kinetic in the gasoline

Answer 6

No , Fuels stores chemical energy.. But if the fuel tank is moving then the tank will have Kinetic energy.

Answer 7

Because they contain releasable excess energy in some form. Chemical fuels contain chemical energy, nuclear fuels contain nuclear energy, etc.