Thursday, March 13, 2008
/1:08 AM
Energy Resources: What are the alternatives?
There are many types of energy resources. They consist of Fossil fuels, Solar energy, Wind power, Tidal power, Hydroelectric, Wave, Geothermal & Biomass.
But some are not renewable.
Renewable energy involves using natural phenomena such as sunlight, wind, rain, tides and geothermal heat, which are naturally replenished.
So which are those that are renewable? Renewable energy sources range from solar power, wind power, hydroelectricity/micro hydro, biomass and biofuels for transportation.
Wind power
Wind power is the conversion of wind energy into useful form, such as electricity, using wind turbines. In windmills, wind energy is directly used to crush grain or to pump water.
Wind power is produced in large scale wind farms which are connected to electrical grids, as well as in individual turbines to provide electricity to isolated locations.
Wind energy is renewable, plentiful, widely distributed, clean, and reduces greenhouse gas emissions when it displaces fossil-fuel-derived electricity. The intermittency of wind seldom create a lot of problems when using wind power to supply a low proportion of total demand, but it requires extra costs when wind is to be used for a large fraction of demand.
Hydropower
Hydropower also known as hydraulic power is the force or energy of moving water. It may be captured for some useful purposes such as irrigation, and operation of various machines, such as watermills, textile machines, and sawmills.
Hydroelectricity
Hydroelectricity is electricity produced by hydropower. It is a renewable source of energy, produces no waste, and does not produce carbon dioxide which contributes to greenhouse gases.
Most hydroelectric power comes from the potential energy of dammed water driving a water turbine and generator.
Solar energy
Solar energy is energy directly from the Sun. It drives the climate and weather and supports virtually all life on Earth. Heat and light from the sun, along with solar-based resources such as wind and wave power, hydroelectricity and biomass, account for most of the available flow of renewable energy.
Solar power is used synonymously with solar energy or more specifically to refer to the conversion of sunlight into electricity.
Biofuel
Biofuel (also called agrofuel) is a basic abbreviation of biorganic fuel. It is a scientific name for any plant or animal substance that can burn combustible organism of two types, plant and animal.
Biofuel is considered as an alternative that is used to replace petroleum gas used for most transportation.
Biomass
Biomass is the living and recently dead biological material that can be used as fuel or for industrial production. Biomass is commonly referred to plant matter grown for use as biofuel, but it also includes plant or animal matter used for production of fibres, chemicals or heat. It may also include biodegradable wastes that can be burnt as fuel. It excludes organic material which has been transformed by geological processes into substances such as coal or petroleum.
Geothermal
Geothermal is energy that is generated by heat stored beneath the Earth's surface or the collection of absorbed heat in the atmosphere and oceans.
From an environmental standpoint, the energy harnessed is clean and safe for the surrounding environment. It is also sustainable because the hot water used in the geothermal process can be re-injected into the ground to produce more steam. In addition, geothermal power plants are unaffected by changing weather conditions. Geothermal power plants work continually, day and night, making them base load power plants.
(576 words)
By:Felicia:)
0 had their say | have yours?
/12:53 AM
This topic is all about energy resources. It includes the different types of resources especially renewable resources that are less harmful to the environment.It also includes some pictures for viewers to understand better about the energy resources.Through this enrichment i learnt more about blogging and making my own blog.
Felicia:)
0 had their say | have yours?
/12:50 AM
0 had their say | have yours?