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Abstract
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Fuel is a substance that under chemical reaction with oxygen (burning) converts into heat energy and other types of energies. Wood combustion is the first use of fuel by humans. Later, coal was extracted and used as a fuel from around 1000 BC in China. However, it became more common as a power source after development of the steam engine. In the nineteenth century, gas extracted from coal was used for street lighting in London. After the discovery of petroleum and natural gas, these materials replaced coal. Fossil fuels include coal, petroleum, and natural gas formed from the fossilized remains of plants and animals at high temperature and pressure in the absence of oxygen in the earth’s crust over millions of years (Karim 2012). According to International Energy Outlook (IEO) 2016, provided by the U.S. Energy Information Administration (EIA), fossil fuels will account for 78% of the total world energy consumption up to 2040 and remain the largest source of energy
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