Assignment on Sustainable Energy
Added on 2020-10-05
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Sustainable Energy
Table of Contents1.Energy meaning.......................................................................................................................32. Units of Energy.......................................................................................................................33. Why we need energy...............................................................................................................34. Demand for Energy.................................................................................................................35. Reasons for increasing in demand...........................................................................................46. Global variations in energy use...............................................................................................47. Energy consumption per head is a reliable indicator of country's level of economicdevelopment................................................................................................................................58. Global shift in energy demand................................................................................................610 impact on environment...........................................................................................................711. Global shift in economic output............................................................................................712. Energy shortages in developing countries can have major impacts- war in Iraq and Libya.713 Lack of access to energy services of adequate quantity and quality......................................714. Look for alternate energy sources- Renewable.....................................................................815. Types of Renewable..............................................................................................................816. Pros and cons.........................................................................................................................9REFERENCES................................................................................................................................2
1.Energy meaningEnergy may be defined as ability to do work, it can come in different forms like thermalenergy (heat), Motion energy (kinetic), radiant energy (light), chemical energy, Nuclear energy,electrical energy and gravitational energy (Watkins and McKendry, 2015). In physics energy canbe defined as a quantitative property which is transferred to an object to perform work on or toheat the object. According to the law conservation of energy, energy can not be created nordestroyed but can be converted in one form to another form. People use energy for every thingand in their every day lives sending people into space to walking. Energy is closely related tomass and every living organism require energy in order to stay alive like the energy whichhumans get from food.2. Units of EnergyAs energy is defined as work, so the international system of units commonly known as SIunit of energy is Joule (J) which is the smaller quantity of an energy than calorie and is alsosmaller than British Thermal Unit (BTU). Another form of the energy is Kilowatt hour (kwh),which is an amount of energy from the consumption or a steady production one kilowatt ofpower for one hour. Another unit of energy is Therm which is a unit that describes the energywhich contains in a natural gas. 3. Why we need energyEnergy is an important part of our life and for all living organisms which are present inthe world. Our decisions and choices towards the energy have a grave impact on our Earth'snatural system. In today's world energy is really important like we use different sources ofenergy to generate electricity which is need by us to light our homes, businesses schools etc (VanDer Schoor and Scholtens, 2015). Energy forms the most important element of the universe andit is the key element in the absence of it we can not survive or can't do anything in our life. Everystate of energy which is present in the world is important for us we need energy to live, we needenergy to light our homes, all heating systems will not work in the absence of energy, we needenergy to cook, in the absence of energy there will exist no factories, no industries and noagriculture can be done. So we need energy in the every aspect of or life. 4. Demand for EnergyIn the present world there is a high demand for the energy and is increasing day by day.The demand for the energy has increased because there is rise in population across the world and
also there is increase economic development. It is the coal, gas and oil which together accountfor major part of global energy consumption. Demand for the energy has grown by 2.3% lastyear, which is the fastest pace of the decade and this pace is driven by rise in global economy.According to IEA humans produced and used 5.67 x 10^20 joules of the energy which isequivalent to 18.0 terawatt-hour (twh). 5. Reasons for increasing in demandThere are various reasons which result in increase in demand of energy, one of the mainreasons which has increased the demand for energy is rise in population across the world whichdemand more and more energy. Another reason for rise in demand is economic development assome areas across the world have experienced a large scale economic development. Increase indemand for energy have resulted the countries to generate more of its own energy from thedifferent sources or totally rely on the countries which have got oil reserves or imports exportsfuel.Illustration 1: Energy Production(Source: Rising Energy Demand and The Energy Gap,2019)6. Global variations in energy useEnergy resources across the world are not equally distributed across the world, energyproduction is mostly related to amount of energy resources available and also the amount ofmoney that is available to exploit it. Total energy sources are divided in to 2 main groups whichare renewable sources of energy and non-renewable sources of energy. In 2016 renewablesources of energy provide 44% of electrical capacity and 15% of final energy consumption to
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