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Talking about solar thermodynamic, but it can also be said concentrated solar thermal, it must be said right away that Italy is the holder of some of the most innovative technologies in the sector, first of all that of 'molten salts' born within theAeneas at the push of the Nobel physicist Carlo Rubbia.
The data is relevant because the solar thermodynamic it is considered a technology with important development prospects (especially because it allows energy storage) and suitable for contributing to an energy transition increasingly focused on renewable sources for electricity and thermal production. For once, in short, we can be top of the class.
On this awareness of a 'good future' for the solar thermodynamic the memorandum of understanding is based that the National Association of Solar Thermodynamic Energy ANEST and Legambiente signed in the frame of the SolarExpo fair in Milan.
The agreement contains the guidelines to be respected for new projects by solar thermodynamic and is based on three salient points: the identification of the areas where the new plants will be built (with the exception of environmentally sensitive areas, protected areas and affected by environmental and landscape constraints); compensatory measures to the subtraction of territory through environmental requalification works; initiatives of information and transparent communication to the population.
The vice president of Legambiente Stefano Ciafani emphasized that the solar thermodynamic it is a technology with important prospects precisely because it allows the storage of the energy produced by the Sun. However, it is evident that projects, normally of great power, must be developed in suitable territories, starting from abandoned or industrial areas, limiting the impact on the ground and landscape.
What is thermodynamic solar? A thermodynamic solar system, or concentrating solar thermal system (Concentrated Solar Power), uses mirrors to concentrate sunlight on 'receivers' that collect and transfer solar energy to a heat transfer fluid. In this way, the heat produced can be used directly by the end user.
The difference compared to concentrating photovoltaic systems (CPV), based on the conversion of concentrated solar energy into electricity through the photovoltaic effect, is that the thermodynamic solar systems they function as real thermoelectric power plants in which the energy of the sun (concentrated by optical systems) replaces that supplied by fossil fuels.
Another difference from photovoltaics is that the solar thermodynamic it is not suitable for domestic applications. Although there are also systems of small size, it is unlikely that a family will decide to install it on the roof. The plants are normally large in size and high power, hence the concern for the environmental impact.
The all-Italian technology of molten salts developed and patented byAeneas for solar thermodynamic applications consists in using molten salts at 550 ° C as heat transfer fluid instead of mineral or synthetic oils (benzene) which cannot reach temperatures above 550 ° C. The first molten salt plant was inaugurated in 2013 by Archimede Solar Energy in Massa Martana (Perugia).
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