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Energy

ways of generating electricity
by

belly why

on 11 November 2015

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Transcript of Energy

Hydro-power generates electricity by harnessing the gravitational force of water normally falling from a dam.
Energy
Ways of generating electricity
Biomass
Biomass is biological material from living, or recently living organisms.
Start-up Time
Advantages
1) No harmful emissions.
2) Clean energy
3) It's abundant and renewable
4) Reduces the dependency of Fossil Fuels
5)Reduces landfills
6)Versatile so can be used to create different products.
Disadvantages
Start-up time is the length of time it takes for a power plant to be switched on. Gas- fired power stations have the shortest start-up time, then oil, then coal and finally nuclear. Nuclear and coal provide ‘base load power’.
Coal
If nuclear energy Agency (NEA) has currently estimated the planets economical accessible uranium sources, reactors could run for more than 200 years at current rates of comsumption
Wind Power
Solar
The world’s first commercial power station, Calder hall at Windscale, England was fist open in 1956
solar energy is light and heat radiating from the sun which can be harnessed using a range of ever-evolving technologies such as solar heating, photovoltaic, solar thermal energy , solar architecture and artificial photosynthesis.
Solar panels
A nuclear reactor produces and controls the release of energy from splitting the atoms of uranium-fuelled nuclear power is a clean and efficient way of boiling water to make steam which drives turbine generators
Solar panels are used to heat up water and are often located on rooftops.
Hydro-power
Renewable Energy
Nuclear
Renewable energy is generally defined as energy that comes from resources which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves and geothermal heat. Renewable energy sources quickly replenish themselves and can be used again and again. For this reason they are sometimes called infinite energy resources.
A thermal power station in which the heat source is the nuclear reactor. As in a typical conventional thermal power stations the heat is a non renewable power source
Petroleum

The oil is piped into the boiler where it is burned, converting chemical energy into heat energy. This heats water in pipes coiled around the boiler, turning it into steam.

Disadvantages
Advantages
1. Petroleum Or Oil Has High Density
The average 1kg of burnt oil can generate 10,000 kcal.

2. Extracting Oil Is Easy
Technologies used for extracting oil beneath the earth’s surface are well developed. Nowadays, it is extremely easy to exploit oil deposits if different geological conditions. It doesn’t matter is the oil deposits to be extracted are beneath the ocean’s surface or in places with special climate conditions.

3. Extracting Oil Is Low Cost
The reduced technical and physical effort made oil cheap.

4. Liquid From For Easy Transportation
Petroleum is in liquid form, so it’s pretty easy to transport. It can be brought from the site to the power plant through pipes, or vehicles and can be stored easily.

5. Petroleum Has Broad Areas For Applications
It has been the primary energy resource of power plants to supply the high demands for energy of the modern world of today. It is used to power motors of all kinds including vehicles, power generators, and heavy equipment.
1. Resources Are Limited
Although oil is a natural fossil fuel, its resource is now limited. The high demands of the modern world for energy have stressed the conventional sources of oil reserves. The ever increasing cost of petroleum in the market is a clear indication that oil resources are decreasing. Power plants are getting hard time extracting oil beneath the earth’s surface as reserves are nearly drought.

2. Environmental Pollution
Extracting and burning oil generates greenhouse gasses that contribute to environmental pollution and global warming.

3. Non Renewable Form Of Energy
Petroleum is a non renewable form of energy resource. Once burned to generate electricity, it can be replaced. Depletion of fuels can occur overtime.
Geothermal energy
Geothermal energy is the heat from the Earth. It is clean and sustainable. Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the earth's surface.
Disadvantages. Like fossil fuels, nuclear fuels are non-renewable energy resources. And if there is an accident, large amounts of radioactive material could be released into the environment. In addition, nuclear waste remains radioactive and is hazardous to health for thousands of years.
Disadvantages
Advantages of nuclear power generation: Nuclear power generation does emit relatively low amounts of carbon dioxide (CO2). The emissions of green house gases and therefore the contribution of nuclear power plants to global warming is therefore relatively little.
Advantages
1)Very expensive
2)Inefficient compared to Fossil Fuels
3) Can be harmful to the environment as it releases methane gases.
4)Consumes more fuel
5)Requires more land where things can easily be burnt.
Biofuels
Compare and Contrast
A biofuel is a fuel that is produced through contemporary biological processes, such as agriculture and anaerobic digestion, rather than a fuel produced by geological processes such as those involved in the formation of fossil fuels, such as coal and petroleum, from prehistoric biological matter.
Coal power is non renewable
The best way of genorating electricity is open for debate, some people think that coal, nuclear and other non renewable power stations are the best way to generate electricity; while others think that non renewable ways to generate electricity, like wind and hydro-electric are the best. Non renewable is normally cheaper to make but the resources, like coal, are running out.
Renewable is environmentally friendly but is more costly.
so people have different opinions on which power stations are the best.
Biomass
Biomass can be burnt to heat water. It is a biological material derived from living, or recently living organsims such as: wood, waste and alcohol fuels.
The costs for a utility scale wind turbine range from about $1.3 million to $2.2 million,commercial-scale turbines cost$3-$4 million.
A fossil-fuel power station is a power station which burns fossil fuel such as coal, natural gas or petroleum to produce electricity. Central station fossil-fuel power plants are designed on a large scale for continuous operation. In many countries, such plants provide most of the electrical energy used.
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