Societe Nationale Elf Aquitaine

Centre National De La Recherche Scientifique

Elf Aquitaine

Universite De Perpignan

Manufactures De Vetements Paul Boye S.a.

Le Carbone Lorraine

Manufacture De Vetements Paul Boye

Bernard Spinner

Sylvain Mauran

Driss Stitou

Bruno Spinner, Legal Representative

Martin Spinner, Legal Representative

Anne Christel Spinner Kohler, Legal Representative

Caroline Spinner Brossard, Legal Representative

Vincent Goetz

Jacques Prosdocimi

Michel Lebrun

Didier Payre

Alain Roca

Camille Spinner, Legal Representative

Nathalie Mazet

Georges Crozat

Philippe Boye

Xavier Py

Marianne Balat

Emmanuel Daguerre

Olivier Bertrand

Michel Moreau

Claude Drapier

Pierre Neveu

Philippe Prades

Charles Timoney

André Guillot

Didier Claude Heinry

Michel Mayslich

Jalel Labidi

Benoit Lambotte

Nathalie Mazet, Legal Representative

Alain Marty

Patrice Pelletier

The invention relates to a thermochemical device and to a method for producing refrigeration at very low temperature. The device produces refrigeration at a temperature T&#x3c;&#x2212;20&#xb0; C., from an available heat source at a temperature Tof 60-80&#xb0; C. and a heat sink at the ambient temperature Tof 10&#xb0; C.-25&#xb0; C. It comprises two coupled dipoles, operating in phase opposition. The thermochemical phenomena in one of the dipoles are such that this dipole may produce refrigeration at Twith a heat sink at the ambient temperature T. The thermochemical phenomena in the other dipole are such that this dipole may be regenerated from the heat source Tand a heat sink at the temperature T.

Production of very low-temperature refrigeration in a thermochemical device

The invention relates to refrigeration using a thermochemical system based on the coupling of two reversible physico-chemical phenomena between a gas and a solid or liquid sorbent, one at low temperature (the LT phenomenon) and the other at a higher temperature (the HT phenomenon). The LT phenomenon is a liquid/gas phase change of the fluid G or an absorption of the fluid G by a liquid sorbent. The HT phenomenon is a reversible sorption of the fluid G by a liquid or solid sorbent. The endothermic phase of the LT phenomenon takes place in a reactor thermally isolated from the ambient environment. The exothermic phase of the LT phenomenon takes place in a condenser in communication with the reactor in which the HT phenomenon takes place, the condensed fluid G then being transferred to the reactor in which the endothermic phase of the LT phenomenon takes place.

Method and device for rapid and high-power cold production

The invention relates to refrigeration at Tby a reversible sorption system. The installation comprises a reactor () in which a reversible sorption between a gas G and a sorbent S takes place, a device () in which a reversible phenomenon involving the gas G takes place, means for bringing () into communication with (), and means for isolating them, the equilibrium curve for the reversible phenomenon in () lying within a lower temperature range than that of the equilibrium curve for the reversible sorption in () in the Clausius-Clapeyron plot. The device () contains, apart from the gas G, a liquid/solid phase change material M having a solidification temperature Tbelow the frigeration working temperature T. Use for freezing various products or for producing chilled water or ice.

Installation and method for producing cold by a reversible sorption system

The invention relates to refrigeration at Tby a reversible sorption system. The method is implemented in an installation comprising an endothermic component (EC) and an exothermic component consisting of the reactors () and (). The reactors () and () are in thermal contact, each of them constituting an active thermal mass for the other, and they are provided with heating means () and heat extraction means (). (), () and (EC) are provided with means for bringing them into selective communication, and reversible phenomena involving a gas G take place therein, the equilibrium curve for the phenomenon in () lying within a higher temperature range than that of the equilibrium curve for the phenomenon in (), which is itself higher than that of the curve for the phenomenon in (EC) in the Clausius-Clapeyron plot.

Method for producing cold and installation therefor

A method for obtaining activated carbons from a partly mesophased and partly mesogenic pitch containing less than about 40% of the a resins, more than about 40% of type &#x3b2; resins and between about 5 and 30% of type &#x3b3; resins by activating the pitch preceded by its optional carbonization.

Activated carbons and method for obtaining same from a partly mesophase and partly mesogenic pitch

A method and installation is described for producing cold and/or heat, in a place where the latter are to be used, from one or more heat energy sources. The method is carried out in an installation comprising two or three assemblies of two reactors in which reversible phenomena involving a gas take place, said phenomena being exothermic in the sense of synthesis and endothermic in the sense of decomposition. The energy for the operation of the installation is supplied by a low temperature reactor of one or two assemblies. The installation is suitable for the remote production of cold or heat by means of the transport of gas at ambient temperature.

Installation and method for producing cold or heat using a sorption system

The invention concerns a composite material comprising activated carbon and expanded graphite. The material is a block wherein the activated carbon is homogeneously and uniformly distributed in the form of microporous particles. The texture of said particles is characterised by a microporous volume W ranging between 0.1 cm g and 1.5 cm g and a mean pore dimension L ranging between 2 &angst; and 30 &angst;, the activated carbon particles have substantially the same texture wherever they are located in the composite material, the thermal conductivity levels of the material range between 1 and 100 Wm K . Said material is obtained by heat treatment of a mixture of expanded graphite and an activated carbon precursor in the presence of an activating agent at a temperature and for a time interval sufficient to obtain a wear rate of the activated carbon precursor ranging between 5 and 70% by mass.

Composite material comprising activated carbon and expanded graphite

Thermochemical device for producing cold and/or heat

Method of managing a solid/gas adsorption or thermochemical reaction, the site of which is a device comprising a reactor, which contains a solid capable of reacting with a gas, an evaporator/condenser assembly for the gas and means intended to reheat the solid, the method comprising the steps which consist in:

Method of managing a solid/gas adsorption or thermochemical reaction

Refrigerating method and device

Process for producing an active composite consisting of a support and an active agent is disclosed. The process comprises mixing expanded graphite and an exfoliated lamellar compound, compressing the mixture to form a support which has a graphite density between 0.02 and 0.5 kg/dm.sup.3, and impregnating the support with the active agent. Such active composites are employed as reactants in thermochemical systems.

Process for producing an active composite and active composite produced

Reactant for thermochemical systems, including a support which is, for example, recompressed expanded graphite or vermiculite, and an active agent, for example a salt. According to the invention, the support is in the form of granules of graphite having a density of between 0.20 and 0.5 g/cm.sup.3 and whose diameter lies between 0.2 cm and 2.5 cm.

Reactant in the form of granules for thermochemical systems

The invention relates especially to a process for the production of cold, comprising at least one stage of adsorption of carbon dioxide by an adsorbent solid substance and at least one stage of desorption of the carbon dioxide adsorbed in the said adsorbent substance, in which the said adsorbent substance comprises activated carbon fibers or an active charcoal and has a specific surface of at least 700 m.sup.2 /g and an external specific surface of at least 0.005 m.sup.2 /g.

Production of cold by adsorption/desorption of carbon dioxide

Active composite and its use as reaction medium

Reaction medium improving the characteristics of absorption and of

Growing community of inventors

Corneilla del Vercol, France

Bernard Spinner