The generated steam has a great pressure, arrives at the turbines so that its expansion moves the blades of the same generating current electrical. Nuclear power station. – Source energetics, the uranium Y where a nuclear reactor acts like boiler. The thermal energy is originated by the fission reactions in nuclear fuel formed by an uranium compound. Geothermal power station. – Facilities that the geothermal energy takes advantage of that is to say, the provided one by the heat the Earth instead of petroleum, coal or another fuel. Mareomotriz power station. – Energy associated to the tides caused by the gravitational attraction of the Sun and mainly of the Moon.
The tides are appraised like a variation of the level of the sea, that happens according to the difference of the coastal topography. Aeolian power station. – Installation where the kinetic energy of the wind can be transformed into mechanical energy of rotation. For it one settles towers in whose part superior they exist rotor with multiple shovels, oriented in the wind direction. The shovels or helices turn around their horizontal axes that act on an electricity generator. Solar power station. – In that the solar radiation takes advantage to produce electrical energy. This process, Solar Power station, are subdivided in two specialties: Photovoltaic power station: Where it is made affect the solar radiations on a surface of a semiconducting crystal, call solar cell, and to produce in direct form the electrical current by photovoltaic effect.
This is the reason of ours ” to 1er. Mini;. Photothermal: The heat of the solar radiation warms up a fluid and produces steam that goes towards the turbine producing soon electrical energy. Salts of energy storage. – Part of a Photothermal Solar Power station, where the molten salt is used to store the heat of the sun transforming it into electrical energy, even in hours of absence of the Sun. This one, lately has spread like technology of salts fundidas” in order to obtain the electrical current.
Thus the civil construction, as already it was cited previously that he is one of the sectors that more the nature degrades, establishes a new system of construction of houses from the recycling of substances that can be used in the constructions (PAIVA 2007). The actions that has as objective the reutilizao of materials and/or products, so that it provides to a healthy cycle of life for the population human being and other beings livings creature with the reduction of the problems of deposition of residues or of emission of pollutants, these actions are considered activities of recycling. For Blacksmith (2003, p.6). The production of residues of the civil construction reflects a wastefulness of the materials of that if they constitute in the entulhos – main factor of the actual damages to the environment, for being, normally, played in strips of land, aterros limited and edges of rivers, causing damages to the environment. The cost of the impact for the company is represented by penalties as fine, compensations the third for damages causing areas degraded among others factors that are used to penalizar the companies for the lack of mechanisms of ambient protection. Therefore to become a recycling using residues of civil construction for production of houses, must – to select aggregate composites for hard, dense, steady and clean grains and they do not have to contain contents of nature and in amount that can damage the hidratao and the hardening of the cement.
The protection of the armor against the corrosion, durability or when, the external visual aspect of the concrete will be required (NUNES 2008). According to Nunes (2008 P. 2): The residues of construction and demolition (RCD) can be classified in four classrooms, in accordance with the possibilities of recycling (, the recycled ones as added; B you recycle in other chains as the plastics and C without technology of economically viable recycling) or danger of the residues (Classroom D). The Classroom It is composed for mineral materials as concrete, argamassas, bricks and ceramic roofing tiles, natural rocks, ground among others and represents the biggest fraction of the generated residues. The solid residues of construction, or simply rubbish, are remaining portions of materials derived from workmanships and destructions, being analyzed as one of the biggest problems faced for the Brazilian city halls. The clandestine rejeitos, reached frequently, result in abundant costs for the redistribution of this material, beyond the loss of the ambient attribute. It is also standed out here proliferation of illnesses, whose consequences if become a problem of public health (NUNES 2008). Currently the research comes searching the addition me