Eni S.p.a.

Carla Lazzari

Lino Carnelli

Tamara Passera

Gabriele Bianchi

Marcello Marella

Guido Spano′

Gianni Pandolfi

Carmen Sama'

Guido Spano'

A thermal energy storage apparatus includes at least one hollow tube having an internal cavity and at least one basic module placed inside the internal cavity. The at least one basic module has at least one slab, at least one pair of spacer bars, and at least one through channel adapted for the passage of a heat transfer fluid.

Thermal energy storage apparatus

A process for the production of an optically selective coating of a receiver substrate of a suitable material for solar receiver devices particularly suitable for operating at high temperatures, more specifically for receiver tubes of linear parabolic trough, which comprises: deposition of a layer reflecting infrared radiation consisting of a high-melting metal on a heated receiver substrate of a suitable material; annealing under the same temperature and pressure conditions as the deposition of the reflecting layer; deposition on the high-melting metal of one or more layers of metal-ceramic composite materials (CERMET), wherein the metal is W and the ceramic matrix is YPSZ ('Yttria-Partially Stabilized Zirconia'); deposition on the cermet of an antireflection layer; annealing under the same temperature and pressure conditions as the depositions of the cermet and antireflection layers.

Process for the production of an optically selective coating of a substrate for high temperature receiver solar devices and relative material obtained

The present invention concerns a mixture of inorganic nitrate salts, comprising LiNO, NaNO, KNOand CsNOwherein the LiNOcontent ranges from 17.5% by weight to 21.6% by weight, the NaNO3 content ranges from 10% by weight to 11% by weight, the KNOcontent ranges from 27.7% by weight to 32.6% by weight, the CsNOcontent ranges from 35.8% by weight to 43.8% by weight, including the interval bounds.

Mixture of inorganic nitrate salts

A process for purifying an aqueous stream from a Fischer-Tropsch reaction that includes feeding the aqueous stream to a system that includes a distillation column equipped with a partial condenser and a total condenser, at least partially condensing the vaporized stream leaving the head of the distillation column and collecting a first distillate in which in heavier by-products, totally condensing the remaining portion of the vaporized stream leaving the partial condenser and collecting a liquid stream which is returned to the distillation column as a reflux and removing a purified aqueous stream from the bottom of the distillation column.

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Cornaredo, Italy

Carla Lazzari