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Transcript of COAL
What is coal?
Coal is a combustible black or brownish-black sedimentary rock.
It is composed primarily of carbon along with other smaller elements like H, S, O & N.
It is the largest source of energy for the generation of electricity
Coal is extracted from the ground by coal mining
1. What is coal ?
2. Where do we use coal?
3. Coal Mining
4. Coal Power Plant
8. Cultural Usage
Pictures: Google images
Coal is a source of non-renewable energy. Which means we cannot re-create it.
Coal Power Plant
Where do we use it?
Coal energy produces large amount of carbon dioxide which leads to global warming and climate change
In 1000BC coal was used to smelt copper
It is now used as a fuel to produce electricity
It can be converted into synthetic fuel equivalent to gasoline or diesel.
Coal is an important feedstock for chemical fertilizers and other chemical products.
The burning of coal is not environmental friendly because it produces harmful byproducts and gas emissions such as sulfur dioxide, carbon dioxide and nitrogen oxide that causes pollution to the environment including acid rain
Coal mining has negative environmental effects, we need a lot of space to create a power plant and the minning caves destroy a lot of natural habitats
Coal is used for electricity generation, it is first pulverized and then burnt in a furnace with a boiler, what create a lot of CO2. The furnace heat converts boiler water to steam, which is then used to spin turbine which turns a generator and creates electricity.
Coal energy is an affordable energy source because of the coal’s stable price compared to other fuel sources
Coal is easy to burn
Coal produces high energy upon combustion
Coal energy is a reliable energy source
The goal of coal mining is to obtain coal from the floor.
Advantages and disadvantages
Coal is less than 200 ft below the ground
In some cultures, they tell their children that if they misbehave, they will only get a block of coal for Christmas.
It is also customary and considered lucky in Scotland and the North of England to give coal as a present in New Years Day.
since the 1880s, coal has been widely used to generate electricity.
In the United States, United Kingdom, and South Africa, a coal mine and its structures are a colliery. In Australia, "colliery" generally refers to an underground coal mine.