Renewable energy applied in greenhouses in Vizcaya

The project is carried out in a greenhouse neiker-tecnalia located in country of Derio. This greenhouse is devoted to the production of season crops. Thanks to the implementation of renewable energy conditioning, achieved a significant reduction of costs and an increase in performance (is can cultivate throughout the year, regardless of the station).

The air conditioning system is based on two components. The first is a boiler fed by biomass: wood and vegetable waste as shells of almonds, sawdust, pruning of trees and olives bones. Boiler produces 400 kW of power, being the largest of its kind in Spain used in greenhouses.

The second element are 40 thermodynamic panels that generate energy from temperature to be pruduce from a cold in a closed circuit gas to ambient temperature.

Using these two forms of renewable energy heats water to 80 ° C circulating around pipes above ground and below him, taking the temperature suitable for crop growth.

 

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' Self-cleaning ' Nasa applied to solar technology

Energy solar large-scale develops mainly in immense fields of solar panels which can have up to 25 or 50 football pitches dimension. Mostly these places are located in desert areas, which presents some particular problems as, for example, the from the accumulation of dust. A group of scientists from the University of Boston (led by Dr. Mazumder) are applying technology for NASA missions to Mars and the Moon to resolve this problem, here on Earth.

Dust that accumulates on the solar panels partially blocks the passage of light, as does it the dust that accumulates over a window. And with less light, lower energy can be generated. Now this problem is handled with clean using water or mechanical instruments either, but both have a high cost.In addition, since desert areas, water is a scarce commodity.

But this ' self-cleaning ' technology has not been developed initially with these purposes.Dr. Mazumder team originally devised the self-cleaning system for solar cells on Mars that will provide energy to the space missions robots. But then came the idea of applying it to the terrestrial solar panels.

' Self-cleaning ' this technology is based on the placement of a transparent and sensitive material to electricity. This is placed directly on the glass or a kind of transparent plastic shroud covering panels.From sensor monitors the level of dust, and achieve critical values activates ' self-cleaning ' system, sending a shock that acts as a repellent wave dust, which runs along the entire surface, pushing the particles of land borders.

This will delete approximately 90 percent of the dust on the panels solar.Something, expected, applicable on a large scale, introducing a solution that facilitates the multiplication of producing solar fields you import.

More information:

ScienceDaily

Images:

Google, solar panels in the Sahara desert

Google, manual cleaning of solar panels

Categorias:Solar energy, technology Tags: Tags: car cleaning, ' self-cleaning ', science, desert, electricity, innovation, cleaning, mazumder, NASA, solar panels, dust, production of solar enegia, technology, boston University

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