Ce diaporama a bien été signalé.
Nous utilisons votre profil LinkedIn et vos données d’activité pour vous proposer des publicités personnalisées et pertinentes. Vous pouvez changer vos préférences de publicités à tout moment.

Renewable Energy and its Many Forms

241 vues

Publié le

Renewable Energy comes from sources that are not permanently depleted by their use i.e.,they are naturally renewed. Learn which forms of energy are ready to be used today, and which ones are still in the R&D phase.

Publié dans : Technologie
  • Identifiez-vous pour voir les commentaires

  • Soyez le premier à aimer ceci

Renewable Energy and its Many Forms

  1. 1. Renewable Energy and its Many Forms Today there are several forms of alternative renewable energy, including hydroelectric, biomass, geothermal, wind and solar power. Thanks to scarcity of nonrenewable fossil fuels and increased interest in lessening our negative impact on the environment, there has been a greater push towards making these alternative sources of energy more viable. Many of these alternatives can also greatly decrease the cost of utility payments needed to power homes and business across the world. But which forms of energy are ready to be used today, and which ones are still in the R&D phase? Let’s take a closer look at the benefits and drawbacks of these various forms of renewable energy. Hydroelectric Energy Hydroelectricity, also known ask hydropower, is produced by harnessing the power of moving water found in Earth’s lakes, rivers and oceans. Imagine a dam blocking fast- moving water in a river. The water doesn’t just stop at the dam; that would cause it to overflow. Instead, the water is guided through pipes that turn a turbine and let out the other side of the dam. The turbines then spin as a result of the water and rotate the generator. This generator then creates electricity that’s sent to power lines. Hydropower represents 19 percent of total electricity production, and the United States ranks fourth highest as a producer of such power. It is a relatively clean source of energy that does not require the burning of any fossil fuels and emissions are lower than from other forms of energy.
  2. 2. However, it is very expensive to build a hydroelectric dam and they can only be built in areas with the right conditions. There can also be some negative impacts on the surrounding environment, such as habitat destruction. But perhaps the largest drawback is that it cannot be adopted on the micro level; individuals and businesses trying to lessen their fossil fuels consumption cannot simply decide to go hydro. The dams must already be in place serving their community. Biomass Biomass means natural material. It is used worldwide. Generating biomass energy requires the use of any organic matter like plants, trees or animal waste. The leftover wood or crop waste left behind by factories can be used to produce electricity. To get a general understanding of the process, imagine farms and manufacturing plants collecting wood scraps and sawdust. The burning of that waste heats water to create steam that is sent to a turbine in order to spin and power a generator that creates electricity sent to transmission lines. Biomass produces around 1.5 percent of the energy consumed in the U.S. Unfortunately, while it seems like burning trash that would otherwise go to waste, biomass is also a major contributor of unhealthy air because the process releases an alarming amount of carbon dioxide into the Earth’s atmosphere. And again, it is not something the individual can easily adopt to power their home. Geothermal Power This type of energy requires using the heat from the Earth’s core. Due to the amount of heat the Earth’s core produces, it creates magma that heats the Earth’s crust. By drilling deep into the Earth’s surface, wells can capture the rising hot water and steam. This captured steam rises to the surfaces and pushes a turbine that rotates a generator that can produce electrical power. The process is somewhat similar to the way hydroelectric energy and biomass energy are produced. While geothermal energy is prevalent in underground reservoirs, it’s also found by the formation of volcanoes, geysers and hot springs. Because it is generated continuously, geothermal energy is a considerably reliable source of energy. The United States has geothermal power plants in seven states. Geothermal produces .4 percent of the total energy in the U.S. Despite the fact that geothermal power can be safe, clean and environmentally friendly, it is expensive. High costs have prevented the form of energy from taking off in a widespread way. It must also be done in specific locations, as the excavation process can release harmful gases. Wind Power How does wind power work? By using the energy of wind and converting it into mechanical energy, which turns giant turbines that control generators that produce electricity. For centuries, people have used windmills to pump water, ground grain and complete other chores. The wind turbine has become a highly evolved product today. By seizing the wind’s kinetic energy, wind turbines convert that energy into electric
  3. 3. energy that will later be used to power plants and homes. There are three major types of winder power: utility-scale wind, distributed wind and offshore wind. Wind energy has increased dramatically since its was first adopted. In the 1980s, California was the leader in installed wind energy capacity, making up to nearly 90 percent of the market. In 2012, the United States made up 22 percent of the world’s wind energy capacity. By the end of 2013, over 46,000 wind turbines in over 30 states were active in the U.S. Despite the wider spread adoption of wind power, it is still difficult for homeowners to make the switch on their own. Solar Power Solar energy works in two ways. The more common application of solar energy is through PV panels, or photovoltaic panels. PV cells turn sunlight into electricity instantly with the help of semiconductors like crystalline silicon or other thin film materials. PV cells are one of the most well known forms of energy generators. Powered by the sun’s rays, solar energy is an inexhaustible resource. It can produce great amounts of energy in a very short time and with very little input, making it much more affordable than other forms of alternative energy. It is also one of the cleanest forms of energy with very little waste. Perhaps the greatest advantage of solar is that it’s market ready; businesses and families are already using solar across the US. The cost of installing your own home solar power system is significantly lower than the cost of switching to another system, and the cost continues to decrease over time. Plus there’s no need to wait for the utility company in your area to start offering solar; you can make the switch on your own. The design of solar panels continues to improve as well, and today they are robust and require very little maintenance. Individuals and business owners who are ready to lower their impact on the environment and their monthly bills should consider installing PV panels today. There are many exciting advancements taking place in the world of sustainable and renewable energy. Hopefully soon we will no longer have to rely on fossil fuels at all. However there are advantages and disadvantages to any type of energy production, so do your research to find out which form of energy you should invest in. Revolve Solar is a leader in the solar industry. Located in Central Texas and Northern California, the focus is on customer service for both residential and commercial clientele. Saving the world and your money one system at a time. For more information visit their website today.