What is non renewable energy? They are currently the cheapest source of energy (but the environmental impact of their use is hardly ever calculated as a cost). They are rather easy to transport, especially in the case of natural gas A plant can serve a lot of people. Here some of the non-renewable energies.
It is the oldest known fuel, used for thousands of years for cooking and heating. Wood would be an almost inexhaustible source of energy if it were used in such a way that new plants would have the time to replace those that had been felled.
The coal that is extracted from underground is called fossil; it was formed by the transformation of materials that have undergone a process of fossilization. There are various types of coal that differ in their calorific value. Coal, however, can also be obtained by burning wood in the presence of little air and in this case is called artificial coal. The coal is extracted from the mines; they are of two types: opencast, in tunnels or in wells. Opencast mines cause irreparable damage to the landscape and a considerable degree of pollution. Tunnel mines are less polluting, but involve a very hard and dangerous work for the miners because of the presence of “grisou” gas. Coal is widely used in the chemical industry, in the steel industry and in thermoelectric power stations. Recently, the possibility of transforming coal into liquid or gas is being studied.
Natural gas is found underground, usually in the same fields where the oil lies, or associated with it, dissolved or collected in bags or surface pockets (covering gas), or the field consists exclusively of natural gas, sometimes as almost pure methane (dry gas) or more often combined with vapors of condensable hydrocarbons (wet gas). Natural gas, the long pipes for transporting gas, has an undoubted advantage over other non-renewable energy sources: it is the least harmful resource for the environment, since its combustion does not involve the release of impurities into the atmosphere. Compared to oil, it also has the advantage of higher reserves. To the detriment of natural gas, however, are the high transport costs, which require the construction of complex networks of pipelines. Transport, liquefaction when necessary, storage and the distance between the place of production and the end use all affect the final price of methane in such a way that it is not very elastic.
Petroleum is the main liquid fossil fuel. It consists of a mixture of hydrocarbons (molecules consisting of carbon and hydrogen) that derive from decomposition in the marine environment, under the sedimentary covers, of animal and plant organisms. Since the natural time of formation of oil is tens of millions of years, and the exploitation is very fast, this source, like other fossil fuels, is considered virtually non-renewable.
The greater or lesser ease of extraction depends on the degree of fluidity of the crude oil and the permeability of the porous rock that encloses it.
Nuclear power stations are thermal power stations in which the heat comes from nuclear fission, i.e. from the splitting of uranium nuclei when they are bombarded by neutrons. The splitting is accompanied by the production of energy in the form of heat, as foreseen by the famous relation deduced by Einstein within the relativity, when the total mass of the final nuclei is lower than the initial one (mass defect).
… and when will the petroleum end? Have you thought about it?
At the beginning of the 70’s a group of scientists from the famous Institute of Technology published a research that caused a sensation: the world’s oil reserves were finished within 30 years (ie in our day). At the news the world was panicked. Of course, that prediction was based on detection and extraction techniques and on the known deposits at the time. New deposits have been discovered, and more refined technologies allow today a greater yield in the extraction and production of hydrocarbons. Recent estimates ensure that the oil will still last 80-100 years.
The problem remains the same, however: and afterwards? It is necessary to replace fossil fuels as soon as possible with other renewable energy sources (Wind, solar, hydro, etc.), to avoid finding ourselves in a few years without a drop of oil for our industries! →Try to imagine living a day without energy…..you could not watch TV, cook, take a hot shower, listen to music, use the computer, turn on the lights in the rooms…!!!!!
When all the energy resources are exhausted, all this could happen. Also, let’s not forget that global energy demand is increasing due to the new needs of developing countries. Renewable resources offer another series of advantages, such as being on average more easily available, and being spread with greater homogeneity: the sun, water, wind are resources available everywhere and that almost all countries are able to exploit with the appropriate technologies. Oil fields, on the contrary, are concentrated in particular areas: two thirds of world production comes, for example, from the Arab States and this leads to a strong dependence of non-producing countries.
When, in the 1970s, the Arab oil-producing countries announced the rapid depletion of their reserves, they decided to raise prices for the precious liquid, the world went through a serious economic crisis with serious consequences for everyday life. The government resorted to exceptional measures that led, in the winter of 1973, to the so-called “austerity”. Car traffic was banned every Sunday and people were forced to brush up on old, almost forgotten means of transport, such as bicycles and horses. Citizens were invited to save all forms of energy, whose limited availability was shown for the first time and in a crude manner.
This definitely convinced the governments of the need to look for alternatives to oil. Moreover, a good reason to replace oil is the enormous environmental cost of its processing and consumption. Phenomena such as the greenhouse effect, acid rain, urban smog or plastic pollution are directly or indirectly attributable to the consumption of fossil fuels. Renewable resources offer clean energy because they have a very low environmental impact. Yet renewable energy sources only cover 10% of the world’s energy needs.
Why, in the light of all these reasons, does the world insist on using oil? The truth is that oil has become indispensable for a variety of industrial processes that go far beyond the normal production of energy: plastics, synthetic fibres, basic chemicals are the most important derivatives of the petrochemical industry. We should find new processes to produce these substances, otherwise one day oil will end up leaving us a legacy of an irreparably polluted world.