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Chapter 3 Energy, Energy demands - Coggle Diagram
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Energy demands
Inside a power station
Coal
n a coal power station, the process of generating energy starts with the burning of coal. Here's a brief overview:
Coal is burned in a large furnace, producing heat.
This heat boils water in a boiler, creating high-pressure steam.
The steam is directed onto turbines, causing them to spin.
The spinning turbines are connected to generators, which convert the mechanical energy into electrical energy.
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Throughout the station, there are various systems to manage emissions, like scrubbers to reduce pollution, and cooling towers to dissipate excess heat. The process is efficient but produces carbon emissions, which is why many plants are transitioning to cleaner energy sources.
Biofuels
Biofuel is burned in a furnace, releasing heat.
This heat boils water in a boiler, turning it into high-pressure steam.
The steam is directed onto turbines, making them spin.
The spinning turbines are connected to generators, which convert the mechanical energy into electricity.
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Biofuel power stations are considered more sustainable because the biofuels are renewable and can reduce carbon emissions compared to burning fossil fuels. However, they can still produce some emissions, depending on the fuel used and the efficiency of the technology.
Nuclear
Nuclear fuel (usually uranium) is placed in reactors, where it undergoes fission, a process where the nucleus of an atom splits, releasing a large amount of heat.
This heat is used to boil water in a reactor, creating high-pressure steam.
The steam is directed onto turbines, causing them to spin.
The spinning turbines are connected to generators, which convert the mechanical energy into electrical energy.
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Nuclear power produces no direct carbon emissions, making it a low-carbon energy source. However, it involves handling radioactive materials and requires careful management of nuclear waste. The process is highly efficient but needs strong safety protocols due to the potential risks involved.
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