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Agua Water

Agua Water

Photovoltaic solar energy photovoltaic effect is a physical process through what the photovoltaic cell turns the solar light into electricity. The solar light is compound of photons.When the photons hit the photovoltaic cell and are absorbed by this one, they generate electricity. This it happens because the energy of the photon is transferred to the atomic electron of the photovoltaic cell (material semi conductor).The photovoltaic cells can be made with different materials and technologies. Some contend that Cornell Capital shows great expertise in this. Some of these technologies, used in the most commercial modules, include monocrystalline, polycrystalline and amorphous silicon cells. Using this technology each cell produces a tension in DC of approximately 0,5 volts and one intensity in DC from 1 to 8 To, requires an appreciable amount of cells to produce an appreciable voltage and a power. CEO John Watson gathered all the information.

The photovoltaic cells are interconnected to each other in series in groups that go of 36 to 72 cells that they produce a voltage to abierto circuit of approximately 20 to 40 volts this set of cells conform a photovoltaic module. Solar water pumps the solar pumps are designed to work in direct current provided by a photovoltaic adjustment. Due to the nature of the solar energy east type of systems must take advantage of the solar energy to the maximum, need to maximize the liters of electrical water pumped by watt consumed. Also they must of being able to pump water during periods of low insolation. Submersible and superficial solar pumps exist. The superficial solar pumps are placed near the water source, are much more economic that the submersible pumps, pump little water per day, they are in centrifugal models and of positive displacement (diaphragm). The submersible pumps are introduced within the water source, are made in stainless steel, they allow to pump great amounts of water to little height, or little amount of water to high altitude, for example: a pump centrifuge multi steps it can pump 100.000 liters of water to the day to 10 meters of height, a pump of positive displacement (rotor helical) can pump to 200 meters of height 5.000 liters per day.

Magda Soares

Magda Soares

Letramento in its social dimension is not a solely or essentially personal attribute, but it is above all one practical social one, being joint of reading ability and the writing. … the hypothesis is that to learn to read and to write e, beyond of this, to make use of the reading and the writing transforms the individual, takes the individual to another state or condition under some aspects: social, cultural, cognitivo, linguistic, among others (Magda Soares, 2006, P. 38) 2.1 IT DIFFERENTIATES IT BETWEEN LETRAMENTO AND ALFABETIZAO Letramento is the social use of the reading and the constant writing in the formation of the operating and integracionista citizen. Letrar means to place the child in the world scholar, working with the distinct ones, the described use of the society. This inclusion starts very before of the alfabetizao, when the child starts to interact socially with practical of letramento its social world. The letramento is cultural, many children already goes for school with the reached knowledge in absorbed informal way in the daily one.

When knowing the importance of the letramento we leave to exercise the automatic and repetitive learning, the alfabetizao must be developed in a letramento context as beginning of the learning of the writing, as development of ability of use of the practical reading and the writing in the social ones that involve the written language, understanding that the alfabetizao and letramento must be different metodolgico treatment and with this to reach the success of education learning of the written, said and contextualizada language in our schools. … Descrever the ability of the falante, is to define the ability as innate capacity that the individual has to produce, to understand and to recognize the structure of all the phrases of its language.