Energy is defined as the ability to do work, such as propel the body forward by taking a step (motion). Energy and its ability to do work are measured in joules: power (watts) x time (seconds) and work joules = force (newtons) x distance (Trefil et al, 2010). Energy exists in many forms; kinetic (motion or movement), potential (stored), thermal/heat (atoms and molecules), wave and mass (Trefil et al, 2010) to name a few. Energy is interchangeable, thus it can be changed from one form to another. Where might all of this energy come from? All living systems and/or organisms are sustained through a process call photosynthesis which harnesses energy from the Sun for the purpose of providing dietary sustenance to the inhabitants of the Earth. Conversely, the Sun supplies the radiation necessary to heat and light the Earth, which is beneficial to all living systems and/or organisms. Hence, the Sun is the origin of energy. The focus of my essay will be to explore the current ways in which we use the Sun’s energy to supply heat and light on Earth, the advantages and disadvantages of our current energy methods and/or sources, and ways in which we can utilize renewable energy sources and reduce and conserve our current energy consumption.…
As human beings, we need energy for just about all functions associated with the luxuries of our daily lives. We need energy to heat our homes, to fuel our cars, to watch television in addition to industrial and agricultural purposes. How often do we stop and think about where all this energy is coming from? Energy is formed and disbursed through an industrial process that is performed using a number of different sources. Although there are a number of different sources, there are only two types of energy, renewable and nonrenewable. Renewable energy sources are naturally replaced in time. Because of this factor, there is little concern with running out of these energy resources. On the other hand nonrenewable energy resources are quite the opposite. These resources have the potential to run out because they are not replaced naturally in short periods of time.…
Energy has easily become one of the most important necessities for our everyday lives. Without it we would simply not be able to have transportation or be able to gather any of our other resources that we depend on. If at anytime our energy supply ceases or no longer attainable the results may be horrific. However, it is quite easy to keep this from happening, It is crucial that our current population realize the importance of sustaining our present non-renewable resources. An examination of all the present energy issues and human impacts of energy conservation along with the a resource plan will show importance of energy sustainability how it must be a success.…
From the moment we wake up in the morning until the time we go to bed each night, we all use different forms of energy to perform our daily activities. On a daily basis I use energy for transportation to commute to and from work and run errands; for cooking meals using either my gas range, microwave or charcoal grill; for heating my home in the winter and cooling my home in the summer; for daily showering, and for lighting my home in order to be comfortable and productive. Most of the resources we rely on for energy are nonrenewable and will soon be depleted.…
It is important for everyone to do their part to conserve energy. Our resources, such as water, natural gas, oil, coal and the water species are limited. We have to save some for the future. Another reason is that some of these resources pollute the environment. We have to be careful since it causes damage to the environment.…
First energy is so important because the human population depends upon energy to light out homes, cook food, grow food, warm and cool our homes during the seasons. World energy consumption is on the rise ever year mostly in developing countries, but we can do our part to help through energy efficient appliances, home insulation, and even in our vehicles. We have to consider the effects of our actions on the environment and to move toward ways in which we create sustainability.…
Energy is a source of usable power, such as petroleum or coal. Energy lights cities, powers our vehicles, warms homes, cooks food, plays music and powers machinery in factories. We use energy to do nearly everything that we do in our lives. China uses the most energy but has a very large population. The majority of the electricity we use is made from fossil fuels- coal, natural gas and oil. Some of the electricity we use is from nuclear fission power plants. The rest of the electricity comes from renewable sources such as hydroelectric plants, wind turbines and solar panels. An average person in the USA uses 600 times more energy than an average Ethiopian. The USA uses 80% of the energy China does but has a population a quarter of their size. The wealthier parts of the world generally use more energy than the poorer parts of the world. 1/3 of the world has no electricity.…
Energy plays a central role in modern world and it would not be wrong to say that it drives our lives. Now, it can be easily noticed that due to industrial development, the demand for energy is increasing at an alarming rate and because of this increased requirement, the key sources of energy means; fossil fuels are being depleted in a rapid mode which reflects that we need to concentrate over alternative sources of energy that could also prove to be eco-friendly. But, before discussing that it should be better to have an idea about the current scenario and where we are standing today in context of availability of energy resources.…
Energy conservation is important for each of us and our future generations. At the rate of consumption we can experience an energy shortage like never before. If we continue to deplete the resources that are available to us then it will affect us in many ways such as; forced rationing, increased cost, and restrictions on use. Now is the time to seriously look at alternative energy sources before it’s too late. For Industrialized nations, it is necessary to have reliable sources of energy. Energy is used for many things including; heating, cooking, transportation and manufacturing. Energy can be put into to categories, renewable and non-renewable. In this paper I will layout the differences between renewable energy and non-renewable energy, methods of energy conservation in our homes and communities, and finally economic impact of changing.…
International Journal of Computer and Electrical Engineering, Vol. 2, No. 1, February, 2010 1793-8163 Doubly-Fed Induction Generator for Variable Speed Wind Energy Conversion SystemsModeling & Simulation B.Chitti Babu , K.B.Mohanty Abstract— The aim of this paper is to present the complete modeling and simulation of wind turbine driven doubly-fed induction generator which feeds ac power to the…
There are various energy consider to be harmful to nature, such as oil and other fossil fuels, that have been abandoned by people now. In the past years, people drove gasoline cars which cause ever-increasing emissions and harmful gases that have negative effect to the ozonosphere. Besides, these traditional sources in earth have reduced sharply by fossil fuel used. Therefore, fossil fuels used mast be replaced by alternative resource. Alternative resource, which found by experts, is encouraged to solve the environment polluted problems. Firstly, there are many form of renewable source, like the solar system, biogas, wind turbines, nuclear power and hydropower energy. These sources can be recycled and they are gentle to the environment. Secondly, it is easy to get these alternative sources. In Kristiansand, people develop fuel from a variety sources: from an old landfill and sewage ponds, as well as wood waste from flooring factories and tree pruning. (Using waste, Swedish city cuts its fossil fuel use,p8)…
Energy is the primary and most universal measure of all kinds of work by human beings and nature. Primarily, it is the gift of the nature to the mankind in various forms. The consumption of the energy is directly proportional to the progress of the mankind. With ever growing population, improvement in the living standard of the humanity, industrialization of the developing countries, the global demand for energy increases day by day.…
Energy conservation is so important. Why you ask? Because of the limited amount of nonrenewable energy sources on Earth, it is important to conserve our current supply or to use renewable sources so that our natural resources will be available for future generations. Energy conservation is also important because consumption of nonrenewable sources impacts the environment. Specifically, our use of fossil fuels contributes to air and water pollution. For example, carbon dioxide is produced when oil, coal, and gas combust in power stations, heating systems, and car engines. Carbon dioxide in the atmosphere acts as a transparent blanket that contributes to the global warming of the earth, or "greenhouse effect." It is possible that this warming trend could significantly alter our weather. Possible impacts include a threat to human health, environmental impacts such as rising sea levels that can damage coastal areas, and major changes in vegetation growth patterns that could cause some plant and animal species to become extinct.(www.epa.gov)…
Conserving energy is very important because there is a limited amount of nonrenewable energy sources available on earth such as coal, oil, and gas. If people do not conserve the nonrenewable resources we have now, there might not be any left for future generations. In addition, energy conservation is important because when nonrenewable energy sources are consumed this impacts the environment. The combustion of oil, gas, and coal in power stations produces carbon dioxide and contributes to global warming. The conservation of energy is important to the environment, future generations, every living organism, and human being on earth.…
It is the year 2050, Earth is so polluted, vision is obscured by smog, lakes and streams are poisoned. Oh! What a terrible sight. This may become a reality, if we keep using non-renewable energy resources. Hello there! A very good morning and I am Pranav Athreya and you have guessed it right, I am speaking for the topic Renewable energy is the need of the hour. At present, the main energy sources used are non-renewable fossil fuels like coal, petroleum, and natural gas. There are many disadvantages in using these non-renewable energy sources. Irreversible damage to the environment by pollution and global warming, damage to the eco systems and threat to Life itself. So my dear friends, What is the solution? Renewable Energy, YES it is the Need of the hour. So, what is renewable energy? It is the energy that comes from natural sources such as sunlight, geothermal heat, wind, water, and biofuels powered by feed stocks. Renewable energy is sustainable. These sources are considered “renewable” because they are naturally replenished in the normal flow of the world. Renewable resources not only help our planet to stay clean, but also help our economy. There are several sources of renewable energy. Solar power panels can be used to generate electricity. Wind Power is used to run wind turbines and generate electricity. Ocean Wave Energy can be used to run wave power generators and wave power farms can be planned. Biofuels are fuels that are made from materials such as corn, sugar cane, animal fat, sunflower seeds, wild grasses, and soybeans. The fuel is entirely renewable as replacement crops can be grown. Bio waste-Cow dung is used in rural India even today. This ancient renewable energy source is very useful in generating Gobar Gas. Which is similar to LPG.…