What is the cleanest burning fuel?

Answer 1

(Although biofuel is Earth-friendly and easy to use . . . ) The most efficient fuel, in terms of the amount of energy per unit volume, is diesel, followed by jet fuel (kerosene). Biodiesel follows, then gasoline. Ethanol (as corn-based alcohol) is much farther down the list. Fuels rated by weight, however, are on a different efficiency scale. Liquid hydrogen contains far and away the most energy per kilogram. Then come jet fuel, gasoline, and ethanol. A table of fuel efficiencies can be found at the Related Link.

Answer 2

I'm guessing that you are researching the flashpoints of different fuels, as the flashpoint meaning, the temperature which once heated a fuel will produce sufficient vapours that will ignite when introduced to a naked flame or spark, as there are many different fuels with ranging flashpoints, i will stay to the most readily available fuels, petrol and diesel, petrol has a flashpoint of approx -38.5*c so this fuel will not need any outside heating and will ignite almost anywhere, it is a very flammable liquid, diesel oil has a flashpoint of 61.5*c so it needs to be headed above that to ignite. Many aviation fuels have similar flashpoints to that of petrol though are not readily available to the public, hope this helps Brent

Answer 3

Diesel engine... you can create much higher initial compressions and much more efficient combustions because of it, with diesel engines.

Answer 4

Natural gas (methane (CH4)) when burnt releases less carbon dioxide (CO2) than the other fossil fuels (coal, oil and natural gas).

Answer 5

Petrol is an 'explosive' as soon as a naked flame touches the petrol it explodes into flame.

Answer 6

Depends on the gas.

Answer 7

Hydrogen

Answer 8

coal