Video Explaining What Hydroelectric Power Is
Posted by admin on June 15, 2009
Facts About Hydroelectric Energy
Posted by admin on June 10, 2009
Posted under Articles
In our quest for becoming a greener Earth, one of the best solutions is the continued usage and utilization of hydroelectric energy. Hydroelectric energy is created by utilizing the gravitational force of falling or flowing water. This process is quite reminiscent of the way that wind energy is created. Most people don’t know, but roughly 7% of the utilized power in the United States is created using hydroelectric energy.
One common procedure to do so is by damming up water flowing in a river behind a large concrete wall. This water holds a large amount of potential energy. As it falls from the dam, it flows through a turbine with rotary blades. Electromagnets spin within the turbine as the water flows through it and a current is created. The energy is transferred to coils. These coils take the current to a transformer and the voltage is multiplied for transmission to homes and businesses through power lines.
This rather elegant method of creating energy without drilling for coal or burning fossil fuels enables us to benefit from a natural resource to create hydroelectric energy. This energy source not only does not pollute the Earth’s atmosphere but also reduces green house gasses, and consequently, the threat of global warming. Better yet, this energy is virtually limitless, as the water from streams and rivers is provided by rain fall and is naturally replenished.
Other advantages of this energy are that water is also a generally an available resource in many countries and eliminates the cost of the fuel used for this power source. Once hydroelectric power plants are built on waterways they are relatively inexpensive to operate. As the technology continues to mature, it is likely that power resource will become even more efficient and widespread.
Regardless of the source of electricity, whether it is created using wind, water, oil or coal, the benefits we gain are endless. Currently, water provides the electricity needed for homes and businesses around the world. This electricity operates everything from house hold appliances to wireless devices and large production equipment. Hydroelectric energy can also be stored to be later used in a motor vehicle to reduce our dependence on fuel.
In our quest for becoming a greener Earth, one of the best solutions is the continued usage and utilization of hydroelectric energy. Hydroelectric energy is created by utilizing the gravitational force of falling or flowing water. This process is quite reminiscent of the way that wind energy is created. Most people don’t know, but roughly 7% of the utilized power in the United States is created using hydroelectric energy.
One common procedure to do so is by damming up water flowing in a river behind a large concrete wall. This water holds a large amount of potential energy. As it falls from the dam, it flows through a turbine with rotary blades. Electromagnets spin within the turbine as the water flows through it and a current is created. The energy is transferred to coils. These coils take the current to a transformer and the voltage is multiplied for transmission to homes and businesses through power lines.
This rather elegant method of creating energy without drilling for coal or burning fossil fuels enables us to benefit from a natural resource to create hydroelectric energy. This energy source not only does not pollute the Earth’s atmosphere but also reduces green house gasses, and consequently, the threat of global warming. Better yet, this energy is virtually limitless, as the water from streams and rivers is provided by rain fall and is naturally replenished.
Other advantages of this energy are that water is also a generally an available resource in many countries and eliminates the cost of the fuel used for this power source. Once hydroelectric power plants are built on waterways they are relatively inexpensive to operate. As the technology continues to mature, it is likely that power resource will become even more efficient and widespread.
Regardless of the source of electricity, whether it is created using wind, water, oil or coal, the benefits we gain are endless. Currently, water provides the electricity needed for homes and businesses around the world. This electricity operates everything from house hold appliances to wireless devices and large production equipment. Hydroelectric energy can also be stored to be later used in a motor vehicle to reduce our dependence on fuel.
Air Pollution and the Environment
Posted by admin on May 29, 2009
Posted under Articles
Whether we want to admit or even think about it, air pollution is a real problem, one that continues to affect our environment and our lives each and every day. Although people who live in rural areas can easily forget that such a problem exists (as they do not see smog and factories on a daily basis) or remember its causes (fewer cars on the roads), air pollution is a very real issue that affects everybody. At times we simply can’t ignore air pollution. For example, when driving past a factory pumping smoke clouds high into the sky, or when standing in a traffic jam smelling the exhaust of the car in front of us, it is hard not to imagine what damage it is doing to our body.
What is air pollution?
Air pollution consists of various types of chemicals and gases being passed into our atmosphere. The main cause of this unwanted pollution is vehicles. Second to to that are industrial factories that release dirty and dangerous fumes into the atmosphere.
Why is air pollution dangerous?
- Health reasons: air pollution has been linked to numerous types of illnesses such as strokes, heart issues and breathing problems.
- Global warming: air pollution is responsible for global warming. This phenomena leads to the gradual but persistent increase of the temperature of our planet. It has already started affecting entire ecosystems, and unless it is stopped, it will melt the polar ice caps which will raise sea levels. This will cause flooding in coastal cities such as New York and London.
- Ozone layer: air pollution causes the ozone layer to shrink, thus, reducing its ability to shield us from ultraviolet radiation. This not only causes skin cancer, but also damages wildlife and plants.
- Acid rain: certain pollutants can cause rain to turn to acid rain. This has a great impact on animals, fish and plants that are soaked in it. Acid rain can also affect the ground, making the soil toxic to many animals and plants.
How can we fight air pollution?
- One way would be to use Hybrid vehicles. These vehicles produce about a fourth of the pollution of the average vehicle. Just imagine the global effects if everyone started driving such vehicles.
- Using green energy, such as wind power, solar power, hydro electricity, geothermal power and biomass energy, rather than using fossil fuels for energy, would also have a large impact on air pollution.
Since this problem seems to only get worse in time, and we may reach the point where we damage the environment irrevorcably, the only logical solution is that everybody embrace ways that reduce air pollution in the hope that it will eventually, some day, be eliminated. Perhaps the only way this can be achieved is through education: although most people are familiar with air pollution and how it occurs, and are generally aware of its effects, many would rather turn their heads the other way rather than deal with this ever growing problem. The only way to truly overcome this problem is to start with the young: if we, collectively, can get our descendants to permanently change their ways by learning from our mistakes, then perhaps there is still hope for our planet – and ourselves.