Category Archives: Solar Thermal and. Biomass Energy

The future: the direct production of solar hydrogen

One of the main problems in a future sustainable energy scenario will be the large-scale production of energy at competitive costs and without the production of greenhouse gases, which will be served by transmission vectors such as electri­cal energy and hydrogen. Once the potential of ‘energy transfer’ through electrical interconnection is used up, the new hydrogen vector will allow transferring, […]

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The solar collector used by ENEA

The solar collector represents the main aspect of the economic analysis that will decide the realization of a solar central plant and hence its cost and efficiency are of particular importance for the diffusion of the concentration of solar tech­nology. For this, ENEA has planned and realized, together with the industry, an original prototype of the linear parabolic collector with […]

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The Archimedes Project

A fundamental aspect for the development of the ENEA technology is the real­ization of demonstrative applications on an industrial scale. The realization of a complete solar prototype plant for electrical energy production, linked to the national distribution net, needs the participation of public and private initiatives, as well as adequate investments. In fact, the prototype plant involves high costs because […]

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Solar technologies for electricity generation without light concentration

Let us now consider two other technologies which exploit the solar radiation and are applied as CSP technologies for the generation of electrical energy, but they do not involve the concentration of solar beams. This raises the possibility, in the two case that we are going to discuss, of exploiting not only the direct radiation but also the indirect radiation […]

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The monthly average solar radiation on inclined surfaces

Starting from the experimental values obtained on horizontal surfaces, Liu and Jordan have introduced a widely used method to calculate the monthly average solar radiation on inclined surfaces. This method is based on the division of radia­tion between its direct and diffuse components. Liu and Jordan discovered that the ratio between the monthly average diffuse radiation D and the global […]

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