Advantages And Disadvantages Of Conventional And Nonconventional Sources Of Energy Pdf

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advantages and disadvantages of conventional and nonconventional sources of energy pdf

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Last updated at May 7, by Teachoo. Conventional sources of Energy have been used since a long time.

Renewable sources are renewable, sustainable, abundant and environmentally friendly. Unlike fossil fuels, they are not going to expire soon as they are constantly replenished. These countries have responded to the threat by stepping up campaigns to embrace renewable forms of energy like solar and wind. This is why the question can only be begged: what are the real benefits of using renewable energy? While there are certainly advantages and disadvantages to switching to renewable energy, it is quite arguable that the benefits of using such sources outweigh the shortcomings of it, especially in the future.

Difference between Conventional and Non Conventional

Renewable electricity generation breakdown with nuclear as of Renewable energy is useful energy that is collected from renewable resources , which are naturally replenished on a human timescale , including carbon neutral sources like sunlight , wind , rain , tides , waves , and geothermal heat. Based on REN21 's report, renewables contributed This energy consumption is divided as 8. At the national level, at least 30 nations around the world already have renewable energy contributing more than 20 percent of energy supply.

National renewable energy markets are projected to continue to grow strongly in the coming decade and beyond. Rapid deployment of renewable energy and energy efficiency technologies is resulting in significant energy security , climate change mitigation , and economic benefits.

While many renewable energy projects are large-scale, renewable technologies are also suited to rural and remote areas and developing countries , where energy is often crucial in human development. Renewable energy flows involve natural phenomena such as sunlight , wind , tides , plant growth , and geothermal heat , as the International Energy Agency explains: [28]. Renewable energy is derived from natural processes that are replenished constantly. In its various forms, it derives directly from the sun, or from heat generated deep within the earth.

Included in the definition is electricity and heat generated from solar, wind, ocean, hydropower , biomass, geothermal resources, and biofuels and hydrogen derived from renewable resources. Renewable energy resources and significant opportunities for energy efficiency exist over wide geographical areas, in contrast to other energy sources, which are concentrated in a limited number of countries.

Rapid deployment of renewable energy and energy efficiency, and technological diversification of energy sources, would result in significant energy security and economic benefits. Climate change and global warming concerns, coupled with the continuing fall in the costs of some renewable energy equipment, such as wind turbines and solar panels, are driving increased use of renewables.

As of , small solar PV systems provide electricity to a few million households, and micro-hydro configured into mini-grids serves many more. Prior to the development of coal in the mid 19th century, nearly all energy used was renewable.

Almost without a doubt the oldest known use of renewable energy, in the form of traditional biomass to fuel fires, dates from more than a million years ago. Use of biomass for fire did not become commonplace until many hundreds of thousands of years later. This practice can be traced back some years, to ships in the Persian Gulf and on the Nile.

In the s and s there were already fears that civilization would run out of fossil fuels and the need was felt for a better source. In Professor Augustin Mouchot wrote:.

The time will arrive when the industry of Europe will cease to find those natural resources, so necessary for it. Petroleum springs and coal mines are not inexhaustible but are rapidly diminishing in many places. Will man, then, return to the power of water and wind? Or will he emigrate where the most powerful source of heat sends its rays to all? History will show what will come.

In , Werner von Siemens , commenting on the discovery of the photovoltaic effect in the solid state, wrote:. In conclusion, I would say that however great the scientific importance of this discovery may be, its practical value will be no less obvious when we reflect that the supply of solar energy is both without limit and without cost, and that it will continue to pour down upon us for countless ages after all the coal deposits of the earth have been exhausted and forgotten.

Max Weber mentioned the end of fossil fuel in the concluding paragraphs of his Die protestantische Ethik und der Geist des Kapitalismus The Protestant Ethic and the Spirit of Capitalism , published in The importance of solar energy was recognized in a Scientific American article: "in the far distant future, natural fuels having been exhausted [solar power] will remain as the only means of existence of the human race".

The theory of peak oil was published in Solar had long been used for heating and cooling, but solar panels were too costly to build solar farms until Air flow can be used to run wind turbines. The power available from the wind is a function of the cube of the wind speed, so as wind speed increases, power output increases up to the maximum output for the particular turbine. Typically, full load hours of wind turbines vary between 16 and 57 percent annually, but might be higher in particularly favorable offshore sites.

Wind energy was the leading source of new capacity in Europe, the US and Canada, and the second largest in China. Globally, the long-term technical potential of wind energy is believed to be five times total current global energy production, or 40 times current electricity demand, assuming all practical barriers needed were overcome.

This would require wind turbines to be installed over large areas, particularly in areas of higher wind resources, such as offshore. Since water is about times denser than air , even a slow flowing stream of water, or moderate sea swell , can yield considerable amounts of energy. There are many forms of water energy:. Hydropower is produced in countries, with the Asia-Pacific region generating 32 percent of global hydropower in For countries having the largest percentage of electricity from renewables, the top 50 are primarily hydroelectric.

China is the largest hydroelectricity producer, with terawatt-hours of production in , representing around 17 percent of domestic electricity use. Wave power , which captures the energy of ocean surface waves, and tidal power , converting the energy of tides, are two forms of hydropower with future potential; however, they are not yet widely employed commercially.

A demonstration project operated by the Ocean Renewable Power Company on the coast of Maine , and connected to the grid, harnesses tidal power from the Bay of Fundy , location of world's highest tidal flow. Ocean thermal energy conversion , which uses the temperature difference between cooler deep and warmer surface waters, currently has no economic feasibility.

Solar energy , radiant light and heat from the sun, is harnessed using a range of ever-evolving technologies such as solar heating , photovoltaics , concentrated solar power CSP , concentrator photovoltaics CPV , solar architecture and artificial photosynthesis. Passive solar techniques include orienting a building to the Sun, selecting materials with favorable thermal mass or light dispersing properties, and designing spaces that naturally circulate air.

Active solar technologies encompass solar thermal energy , using solar collectors for heating, and solar power, converting sunlight into electricity either directly using photovoltaics PV , or indirectly using concentrated solar power CSP. A photovoltaic system converts light into electrical direct current DC by taking advantage of the photoelectric effect. Commercial concentrated solar power plants were first developed in the s.

CSP-Stirling has by far the highest efficiency among all solar energy technologies. In , the International Energy Agency said that "the development of affordable, inexhaustible and clean solar energy technologies will have huge longer-term benefits.

It will increase countries' energy security through reliance on an indigenous, inexhaustible and mostly import-independent resource, enhance sustainability , reduce pollution, lower the costs of mitigating climate change , and keep fossil fuel prices lower than otherwise.

These advantages are global. Hence the additional costs of the incentives for early deployment should be considered learning investments; they must be wisely spent and need to be widely shared". High temperature geothermal energy is from thermal energy generated and stored in the Earth.

Thermal energy is the energy that determines the temperature of matter. Earth's geothermal energy originates from the original formation of the planet and from radioactive decay of minerals in currently uncertain [70] but possibly roughly equal [71] proportions. The geothermal gradient , which is the difference in temperature between the core of the planet and its surface, drives a continuous conduction of thermal energy in the form of heat from the core to the surface.

The adjective geothermal originates from the Greek roots geo , meaning earth, and thermos , meaning heat. Heat conducts from the core to surrounding rock.

Extremely high temperature and pressure cause some rock to melt, which is commonly known as magma. Magma convects upward since it is lighter than the solid rock. Low temperature geothermal [39] refers to the use of the outer crust of the Earth as a thermal battery to facilitate renewable thermal energy for heating and cooling buildings, and other refrigeration and industrial uses.

In this form of geothermal, a geothermal heat pump and ground-coupled heat exchanger are used together to move heat energy into the Earth for cooling and out of the Earth for heating on a varying seasonal basis. Low temperature geothermal generally referred to as "GHP" is an increasingly important renewable technology because it both reduces total annual energy loads associated with heating and cooling, and it also flattens the electric demand curve eliminating the extreme summer and winter peak electric supply requirements.

Biomass is biological material derived from living, or recently living organisms. It most often refers to plants or plant-derived materials which are specifically called lignocellulosic biomass.

Conversion of biomass to biofuel can be achieved by different methods which are broadly classified into: thermal , chemical , and biochemical methods. Wood remains the largest biomass energy source today; [75] examples include forest residues — such as dead trees, branches and tree stumps —, yard clippings, wood chips and even municipal solid waste.

In the second sense, biomass includes plant or animal matter that can be converted into fibers or other industrial chemicals , including biofuels. Industrial biomass can be grown from numerous types of plants, including miscanthus , switchgrass , hemp , corn , poplar , willow , sorghum , sugarcane, bamboo , [76] and a variety of tree species, ranging from eucalyptus to oil palm palm oil. Plant energy is produced by crops specifically grown for use as fuel that offer high biomass output per hectare with low input energy.

Plant biomass can also be degraded from cellulose to glucose through a series of chemical treatments, and the resulting sugar can then be used as a first generation biofuel. Biomass can be converted to other usable forms of energy such as methane gas [78] or transportation fuels such as ethanol and biodiesel.

Crops, such as corn and sugarcane, can be fermented to produce the transportation fuel, ethanol. Biodiesel, another transportation fuel, can be produced from left-over food products such as vegetable oils and animal fats. Once harvested, it can be fermented to produce biofuels such as ethanol, butanol , and methane, as well as biodiesel and hydrogen. The biomass used for electricity generation varies by region.

Forest by-products, such as wood residues, are common in the United States. Agricultural waste is common in Mauritius sugar cane residue and Southeast Asia rice husks. Animal husbandry residues, such as poultry litter, are common in the United Kingdom. Biofuels include a wide range of fuels which are derived from biomass.

The term covers solid , liquid , and gaseous fuels. Gaseous biofuels include biogas , landfill gas and synthetic gas. Bioethanol is an alcohol made by fermenting the sugar components of plant materials and it is made mostly from sugar and starch crops. These include maize, sugarcane and, more recently, sweet sorghum. The latter crop is particularly suitable for growing in dryland conditions, and is being investigated by International Crops Research Institute for the Semi-Arid Tropics for its potential to provide fuel, along with food and animal feed, in arid parts of Asia and Africa.

With advanced technology being developed, cellulosic biomass, such as trees and grasses, are also used as feedstocks for ethanol production. Ethanol can be used as a fuel for vehicles in its pure form, but it is usually used as a gasoline additive to increase octane and improve vehicle emissions. Bioethanol is widely used in the United States and in Brazil. The energy costs for producing bio-ethanol are almost equal to, the energy yields from bio-ethanol.

However, according to the European Environment Agency , biofuels do not address global warming concerns. It can be used as a fuel for vehicles in its pure form, or more commonly as a diesel additive to reduce levels of particulates, carbon monoxide, and hydrocarbons from diesel-powered vehicles.

Biodiesel is produced from oils or fats using transesterification and is the most common biofuel in Europe. Biofuels provided 2. Pollutants such as sulphurous oxides SO x , nitrous oxides NO x , and particulate matter PM are produced from the combustion of biomass; the World Health Organisation estimates that 7 million premature deaths are caused each year by air pollution.

Minerals and Power Resources

It is the basic input required to sustain economic growth. There is direct relation between the level of economic development and per capita energy consumption. Simply speaking more developed a country, higher is the per capita consumption of energy and vice-versa. This indicates that our country has low rate of per capita consumption of energy as compared to developed countries. These sources of energy are also called non renewable sources. These sources of energy are in limited quantity except hydro-electric power.

Extracting coal, oil and gas is dangerous and can be polluting; and these fossil fuels are non-renewable. As we use up easily-accessible sources of coal, oil and gas extracting them becomes harder, more expensive and more dangerous. While the Paris Agreement marked a significant recognition of the efforts needed to reduce global CO emissions to near pre-industrial temperatures, the UN Environment Programme report remarks that global greenhouse gas emissions will need to fall drastically by 7. Rising Tide UK is a network of groups and individuals dedicated to taking local action and building a movement against climate change, and their website includes lots of easily understandable information. There is much more in the Green Choices feature on Climate Change: your choices , written specially for Green Choices by an expert at Edinburgh University. Nuclear power is extremely expensive to produce, requires great attention to safety because of the risks from radioactivity, has the potential for catastrophic accidents such as the one at Chernobyl in , and produces waste products which require looking after for thousands of years. While it has the potential to generate a lot of electricity the risks are high and the same investment in insulation, energy efficiency and renewable sources of energy would produce great benefits and fewer risks.

Pros and Cons of 10 Types of Energy

Energy can be defined as the capacity or ability to do work. It plays an important role in our day to day life as it is required in every field like industry, transport, communication, sports, defence, household, agriculture and more. There are plenty of energy sources to get energy. These energy resources can be classified as Conventional and Non-conventional sources of energy. Let us see how they differ from each other!

ABSTRACT: The sources of energy which are exhaustible and being produced continuously in nature are called nonconventional energy or renewable sources of energy. Some of these sources include solar energy, wind energy and tidal energy. The conventional energy sources are basically based on fossil fuels which have finite reserves in nature and hence would extinct in future. Since the development and progress of mankind are closely related to energy sources, many countries throughout the world have engaged themselves in searching and developing non-conventional energy sources that would be very essential to sustain the life cycle of human being. Energy is the primary and most universal measure of all kinds work by human beings and nature.

Renewable electricity generation breakdown with nuclear as of Renewable energy is useful energy that is collected from renewable resources , which are naturally replenished on a human timescale , including carbon neutral sources like sunlight , wind , rain , tides , waves , and geothermal heat. Based on REN21 's report, renewables contributed This energy consumption is divided as 8. At the national level, at least 30 nations around the world already have renewable energy contributing more than 20 percent of energy supply.

What is Renewable Energy?

Book Chosen

 - После цифр стоит какая-то звездочка. Джабба ее не слушал, остервенело нажимая на кнопки. - Осторожно! - сказала Соши.  - Нам нужны точные цифры. - Звездочка, - повторила Сьюзан, - это сноска. Соши прокрутила текст до конца раздела и побелела. - О… Боже ты .

 Если бы я не нашел черный ход, - сказал Хейл, - это сделал бы кто-то. Я спас вас, сделав это заранее. Можешь представить себе последствия, если бы это обнаружилось, когда Попрыгунчик был бы уже внедрен. - Так или иначе, - парировала Сьюзан, - теперь мы имеем параноиков из Фонда электронных границ, уверенных, что черный ход есть во всех наших алгоритмах. - А это не так? - язвительно заметил Хейл.

Она снова начала нажимать кнопки и снова услышала за дверью этот же звук. И вдруг Сьюзан увидела, что кнопка вызова вовсе не мертва, а просто покрыта слоем черной сажи. Она вдруг начала светиться под кончиком пальца. Электричество. Окрыленная надеждой, Сьюзан нажала на кнопку.

Хватит путаться у нас под ногами, вот моя рекомендация. - Спокойно, Джабба, - предупредил директор. - Директор, - сказал Джабба, - Энсей Танкадо владеет нашим банком данных.

ШИФРОВАЛКА - ПРОИЗВОДИТЕЛЬНОСТЬРАСХОДЫ Настроение его сразу же улучшилось. Мидж оказала ему настоящую услугу: обработка отчета шифровалки, как правило, не представляла собой никаких трудностей. Конечно, он должен был проверить все показатели, но единственная цифра, которая по-настоящему всегда интересовала директора, - это СЦР, средняя цена одной расшифровки. Иными словами, СЦР представляла собой оценочную стоимость вскрытия ТРАНСТЕКСТОМ одного шифра.

Автобус номер 27 следует к хорошо известной конечной остановке. ГЛАВА 46 Фил Чатрукьян швырнул трубку на рычаг. Линия Джаббы оказалась занята, а службу ожидания соединения Джабба отвергал как хитрый трюк корпорации Американ телефон энд телеграф, рассчитанный на то, чтобы увеличить прибыль: простая фраза Я говорю по другому телефону, я вам перезвоню приносила телефонным компаниям миллионы дополнительных долларов ежегодно.

ГЛАВА 54 - Пусти. А потом раздался нечеловеческий крик. Это был протяжный вопль ужаса, издаваемый умирающим зверем. Сьюзан замерла возле вентиляционного люка. Крик оборвался столь же внезапно, как и раздался.


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Two major sources of energy are conventional sources and non-conventional sources. Following are the two disadvantages of conventional energy sources: It is not Below are some advantages of non-conventional sources of energy.

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In recent years, calls for a stalwart shift toward renewable non-conventional natural resources as sources of energy have increased.

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This article evaluates benefits and challenges of various energy sources, including solar, nuclear, wind, and more.

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