Introduction Coal is a variety of solid, combustible and organic sedimentary rocks formed from vegetation that has been consolidated between other rock strata and altered by the combined effects of pressure and heat over millions of years (IEA, 2017). Around the world, requirements for energy and electricity are met by fossil fuels amongst which coal is the most abundant and broadly distributed. It is the most common fuel choice because it is a secure and low cost energy source and is relatively easy to mine, ship, and store. Coal is the second source of primary energy after oil and is mostly used for power generation. Over 40% of worldwide electricity is produced from coal (IEA, 2017).
The nuclear energy is produced in the nuclear reaction through the nuclear fission, while the fossil fuels was produced by chemical reaction and it is estimated that a fission reaction is roughly a million times more energetic than a chemical reaction. Nuclear energy requires very little quantity of fuel to produce large quantities of energy. When one gram of uranium-235 undergoes nuclear fission in reactor, the energy it produces is equal to the burning of three tonnes of coal or two tonnes of oil. Moreover, nuclear energy produces millions of times more powerful, for example, 1 kg of coal could keep a light bulb lit for four days, while same amount of nuclear fuels could lit the same bulb up for 685 years. (Nuclear Industry Association, N/A) Additionally, The United Nation (2015) estimated that by the year of 2030, the world population will reach 8.5 billion, and by the year of 2015, it will reach over 11 billion.
Power plants burn fuel to produce heat to generate energy; however, nuclear power plants use the heat given off fission to turn water into steam. Nuclear energy is without a doubt a great way to power our homes because, Nuclear power plants are safer than other energy alternatives. Nuclear plants are safer than other energy alternatives. Coal is responsible for five times more deaths than nuclear power plants, coal also causes over one thousands more serious causes of illness than nuclear. Nuclear plants produce steam while coal plants, heat water by burning coal that produces greenhouse emissions.
The amount of heat of Earth’s surface contains 50,000 times more energy than all the oil and natural gas resources in the world. Unlike wind power, geothermal energy can be relied on as it provides constant power. People choose geothermal energy for reasons. Every type of power has their own pros and cons, even though geothermal energy is expensive and have some other disadvantages, it is efficient and reliable. (example
First, it is convenient because you can get it in any resources like corn. Second is versatility, you can use it in our home like in our appliances and it is better to use because natural energy leave no mess. Savings because it is cheaper than in gasoline. Reliable supply, as I said you can get natural resources in simple things and there are many supplier all over the world. Future possibilities and environment benefits, there’s a study that it lessen the air pollution by using it.
Energy crisis, greenhouse effect, fossil fuel emissions, lack of natural resources, rising oil prices…just a few of the phrases you may have heard thrown around within the last few years. And, inevitably, you will have talked about, heard about or read about the need for the way we live with regard to our consumption of fossil fuels and the sources we use to fulfil our energy needs on earth to change, and to change drastically. The majority of the world’s current energy supply is obtained from coal, gas and oil. All of these resources are non-renewable, severely depleted and the rate of usage increasing day in day out. It’s estimated that gas reserves will run out somewhere in the next 50 years, and for oil we’re given a deadline between
It also makes the electricity cheap as the cost of uranium, is quite low and also the average life of a nuclear reactor ranges from 40-60years, so it is great investment it can last a really long time. The main reason behind the costs of the fuel being low is because a small amount of the fuel can create massive amounts of energy, it releases million times more energy as compared to traditional sources of energy ("Nuclear
Smoking: should it be banned in public? According to the New Zealand Ministry of Health (2010), young adults aged between 20 to 29 years have the highest rate of smoking. The WHO (2012) finds that on average every six seconds one person dies from smoking cigarettes. China is considered the largest country that consumes and produces cigarettes in the world. Recently, researchers found that tobacco killed around 100 million people in the worldwide in the 20th century, and this number is more than the figure of killed people in world wars I and II.
A number of advanced coal combustion technologies have been developed to improve the efficiency of power generation from coal. New technologies for efficient combustion of coal reduces emissions of CO2 and other pollutants such as NOx, SOx and particulates. LITERATURE REVIEW Coal fuels more than half of Americans use electricity in this country. The United States has the largest recoverable in the world-more often than the oil reserves or domestic natural gas reserves. While Duke Energy power generation has its roots in hydropower, coal units in the 1920s continued, as the demand for electricity, homes, businesses and industries flourished.
Tobacco deaths infrequently make headlines Ecumenically, the smoking-cognate death toll is around 570 people per hour or virtually 10 people per minute (Levy et al. 2011). Tobacco kills a third to a moiety of all people who utilize it, on average 15 years prematurely (Accommodations 2004). Today, 1 in 10 deaths among adults ecumenical – more than five million people a year only by tobacco use. By 2030, unless exigent action is taken, tobacco’s annual death toll will elevate to more than eight million (Mathers and Loncar 2006).