Patents by Inventor Driss Stitou

Driss Stitou has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11604034
    Abstract: The present invention concerns a method of refrigerating a housing to a target temperature according to which: an evaporator is placed in said housing; said evaporator is placed in fluid communication with a thermochemical reactor Ri, simultaneously, the heat produced at said reactor Ri is evacuated; Characteristically, at least n>1 other thermochemical reactors are provided; I) the pressure Pevi in said evaporator after it is placed in fluid communication with said thermochemical reactor Ri, and the temperature of said thermochemical reactor Ri connected to said evaporator, are determined; II) when the temperature difference DTRi between the temperature of said reactor Ri connected to said evaporator and the equilibrium temperature TeSi of said reactive mixture contained in said thermochemical reactor Ri at the pressure Pevi of said evaporator is equal to a first predetermined differential and/or when the temperature difference DTev between said evaporator and the interior of said housing is equ
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: March 14, 2023
    Assignee: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Aleix Pubill, Laurent Rigaud, David Tadiotto, Driss Stitou, Nathalie Mazet
  • Patent number: 10989484
    Abstract: Disclosed is an installation for generating electricity from a heat source, for disconnecting the production of electricity from the source of heat. The main characteristic of such installation is that it includes a thermochemical storage device coupled to a power cycle, the storage device consisting of a reactor in which produces a reversible sorption process and an evaporator and a condenser, at least one of the components of the thermochemical device being coupled mass and/or thermal to at least one element of the power cycle.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: April 27, 2021
    Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE DE NANTES
    Inventors: Nathalie Mazet, Sylvain Mauran, Pierre Neveu, Driss Stitou, Lingai Luo, Yilin Fan
  • Patent number: 10874985
    Abstract: A system for purifying a treated liquid, including: a treatment module, for treating the liquid and providing a purified liquid, and a residual liquid; and a means for pressurizing said treated liquid to supply said treatment module, including: a master cylinder, driven by a working fluid, and at least slave cylinder, driven by said master cylinder, receiving said treated liquid and supplying it to said treatment module; a cross section of said master cylinder is greater than a cross section of said slave cylinder so that, a greater pressure is generated on the treated liquid in the slave cylinder; and a means for pre-pressurizing the treated liquid, upstream of the pressurizing means, including: at least one master cylinder, connected to the treatment module, and driven by the residual liquid, and a slave cylinder, containing the treated liquid, driven by said master cylinder.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: December 29, 2020
    Assignee: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Driss Stitou, Nathalie Mazet, Sylvain Mauran
  • Publication number: 20200292247
    Abstract: The present invention concerns a method of refrigerating a housing to a target temperature according to which: an evaporator is placed in said housing; said evaporator is placed in fluid communication with a thermochemical reactor Ri, simultaneously, the heat produced at said reactor Ri is evacuated; Characteristically, at least n>1 other thermochemical reactors are provided; I) the pressure Pevi in said evaporator after it is placed in fluid communication with said thermochemical reactor Ri, and the temperature of said thermochemical reactor Ri connected to said evaporator, are determined; II) when the temperature difference DTRi between the temperature of said reactor Ri connected to said evaporator and the equilibrium temperature TeSi of said reactive mixture contained in said thermochemical reactor Ri at the pressure Pevi of said evaporator is equal to a first predetermined differential and/or when the temperature difference DTev between said evaporator and the interior of said housing is equ
    Type: Application
    Filed: September 7, 2018
    Publication date: September 17, 2020
    Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Aleix PUBILL, Laurent RIGAUD, David TADIOTTO, Driss STITOU, Nathalie MAZET
  • Publication number: 20190390920
    Abstract: Disclosed is an installation for generating electricity from a heat source, for disconnecting the production of electricity from the source of heat. The main characteristic of such installation is that it includes a thermochemical storage device coupled to a power cycle, the storage device consisting of a reactor in which produces a reversible sorption process and an evaporator and a condenser, at least one of the components of the thermochemical device being coupled mass and/or thermal to at least one element of the power cycle.
    Type: Application
    Filed: December 18, 2017
    Publication date: December 26, 2019
    Inventors: Nathalie MAZET, Sylvain MAURAN, Pierre NEVEU, Driss STITOU, Lingai LUO, Yilin FAN
  • Publication number: 20190366271
    Abstract: A system for purifying a treated liquid, including: a treatment module, for treating the liquid and providing a purified liquid, and a residual liquid; and a means for pressurizing said treated liquid to supply said treatment module, including: a master cylinder, driven by a working fluid, and at least slave cylinder, driven by said master cylinder, receiving said treated liquid and supplying it to said treatment module; a cross section of said master cylinder is greater than a cross section of said slave cylinder so that, a greater pressure is generated on the treated liquid in the slave cylinder; and a means for pre-pressurizing the treated liquid, upstream of the pressurizing means, including: at least one master cylinder, connected to the treatment module, and driven by the residual liquid, and a slave cylinder, containing the treated liquid, driven by said master cylinder.
    Type: Application
    Filed: November 22, 2017
    Publication date: December 5, 2019
    Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Driss STITOU, Nathalie MAZET, Sylvain MAURAN
  • Publication number: 20180100676
    Abstract: A device is provided for the autonomous production of refrigeration approximately 40° C. lower than ambient temperature from a low-temperature solar thermal source, the device including: (i) a reactor arranged to cool and/or heat the solid reagent; (ii) a condenser; (iii) a first tank for storing the liquid refrigerant at ambient temperature; (iv) an enclosure arranged to store a phase-change material and also including an evaporator; (v) a second tank for storing the liquid refrigerant at a low temperature; (vi) apparatus for conveying the refrigerant and (vii) apparatus for controlling the flow of the refrigerant.
    Type: Application
    Filed: March 23, 2016
    Publication date: April 12, 2018
    Inventors: Driss STITOU, Sylvain MAURAN, Nathalie MAZET
  • Patent number: 9599371
    Abstract: An installation for the production of cold and/or heat has a driving and a receiving machine. The driving machine has means for circulating a working fluid GM, an evaporator EM, at least one transfer cylinder CTM that contains a transfer liquid LT in a lower part and the working fluid GM liquid and/or vapor form above the transfer liquid, a condenser CM, at least one device BSM for separating the liquid and vapor phases of the working fluid GM, and a device for compressing the working fluid GM to the liquid state.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: March 21, 2017
    Assignee: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Sylvain Mauran, Nathalie Mazet, Pierre Neveu, Driss Stitou
  • Patent number: 8794003
    Abstract: A plant for the producing of cold, heat and/or work. The plant includes at least one modified Carnot machine having a first assembly that includes an evaporator Evap combined with a heat source, a condenser Cond combined with a heat sink, a device DPD for pressurizing or expanding a working fluid GT, a means for transferring said working fluid GT between the condenser Cond and DPD, and between the evaporator Evap and DPD; a second assembly that includes two transfer vessels CT and CT? that contain a transfer liquid LT and the working fluid GT in the form of liquid and/or vapor; a means for selectively transferring the working fluid GT between the condenser Cond and each of the transfer vessels CT and CT?, as well as between the evaporator Evap and each of the transfer enclosures CT and CT?; and a means for selectively transferring the liquid LT between the transfer vessels CT and CT? and the compression or expansion device DPD, said means including at eat hydraulic converter.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: August 5, 2014
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Sylvain Mauran, Nathalie Mazet, Pierre Neveu, Driss Stitou
  • Patent number: 8327660
    Abstract: 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 Tf<?20° C., from an available heat source at a temperature Th of 60-80° C. and a heat sink at the ambient temperature To of 10° C.-25° 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 Tf with a heat sink at the ambient temperature To. The thermochemical phenomena in the other dipole are such that this dipole may be regenerated from the heat source Th and a heat sink at the temperature To.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: December 11, 2012
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Driss Stitou, Nathalie Mazet, Bernard Spinner, Caroline Spinner Brossard, legal representative, Anne Christel Spinner Kohler, legal representative, Bruno Spinner, legal representative, Martin Spinner, legal representative, Camille Spinner, legal representative
  • Publication number: 20120067067
    Abstract: An installation for the production of cold and/or heat has a driving and a receiving machine. The driving machine has means for circulating a working fluid GM, an evaporator EM, at least one transfer cylinder CTM that contains a transfer liquid LT in a lower part and the working fluid GM liquid and/or vapor form above the transfer liquid, a condenser CM, at least one device BSM for separating the liquid and vapor phases of the working fluid GM, and a device for compressing the working fluid GM to the liquid state.
    Type: Application
    Filed: March 25, 2010
    Publication date: March 22, 2012
    Inventors: Sylvain Mauran, Nathalie Mazet, Pierre Neveu, Driss Stitou
  • Publication number: 20110167825
    Abstract: A plant for the producing of cold, heat and/or work. The plant includes at least one modified Carnot machine having a first assembly that includes an evaporator Evap combined with a heat source, a condenser Cond combined with a heat sink, a device DPD for pressurizing or expanding a working fluid GT, a means for transferring said working fluid GT between the condenser Cond and DPD, and between the evaporator Evap and DPD; a second assembly that includes two transfer vessels CT and CT? that contain a transfer liquid LT and the working fluid GT in the form of liquid and/or vapor; a means for selectively transferring the working fluid GT between the condenser Cond and each of the transfer vessels CT and CT?, as well as between the evaporator Evap and each of the transfer enclosures CT and CT?; and a means for selectively transferring the liquid LT between the transfer vessels CT and CT? and the compression or expansion device DPD, said means including at eat hydraulic converter.
    Type: Application
    Filed: March 30, 2009
    Publication date: July 14, 2011
    Inventors: Sylvain Mauran, Nathalie Mazet, Pierre Neveu, Driss Stitou
  • Publication number: 20110126552
    Abstract: The present invention relates to a device and a method for air conditioning a building using an intermittent heat source whereof the maximum temperature is 70° C. and a heat sink at a temperature of 15° C. The device comprises 3 or 4 thermochemical dipoles each comprising an evaporator-condenser unit and a reactor connected by means for circulating G between them and means for interrupting the flow of G. The reactors are the seat of reversible processes between G and a liquid or a solid, and the evaporators-condensers are the seat of a liquid-gas phase change of G; the reactors are equipped with means for exchanging heat between them and means for controlling the heat exchange; the thermochemical processes in the dipoles may be identical or different; the device comprises a heat source at a variable temperature Tc, the maximum temperature being 70° C., and a heat sink at a temperature To of 15° C.
    Type: Application
    Filed: December 13, 2005
    Publication date: June 2, 2011
    Inventors: Driss Stitou, Jean-Pierre Coudert, Bernard Spinner, Caroline Spinner Brossard, Anne Christel Spinner Kohler, Bruno Spinner, Martin Spinner, Camille Spinner
  • Patent number: 7775066
    Abstract: 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.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: August 17, 2010
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Driss Stitou, Olivier Bertrand, Bernard Spinner, Bruno Spinner, legal representative, Caroline Spinner Brossard, legal representative, Anne Christel Spinner Kohler, legal representative, Nathalie Mazet, legal representative, Martin Spinner, legal representative
  • Patent number: 7624584
    Abstract: The invention relates to refrigeration at TU by a reversible sorption system. The installation comprises a reactor (1) in which a reversible sorption between a gas G and a sorbent S takes place, a device (2) in which a reversible phenomenon involving the gas G takes place, means for bringing (2) into communication with (1), and means for isolating them, the equilibrium curve for the reversible phenomenon in (2) lying within a lower temperature range than that of the equilibrium curve for the reversible sorption in (1) in the Clausius-Clapeyron plot. The device (2) contains, apart from the gas G, a liquid/solid phase change material M having a solidification temperature TS below the frigeration working temperature TU. Use for freezing various products or for producing chilled water or ice.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: December 1, 2009
    Assignees: Centre National de la Recherche Scientifique, Universite de Perpignan
    Inventors: Driss Stitou, Olivier Bertrand, Bernard Spinner, Bruno Spinner, legal representative, Caroline Spinner Brossard, legal representative, Anne Christel Spinner Kohler, legal representative, Camille Spinner, legal representative, Martin Spinner, legal representative
  • Patent number: 7621149
    Abstract: The invention relates to refrigeration at TU by a reversible sorption system. The method is implemented in an installation comprising an endothermic component (EC) and an exothermic component consisting of the reactors (1) and (2). The reactors (1) and (2) are in thermal contact, each of them constituting an active thermal mass for the other, and they are provided with heating means (6) and heat extraction means (5). (1), (2) 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 (1) lying within a higher temperature range than that of the equilibrium curve for the phenomenon in (2), which is itself higher than that of the curve for the phenomenon in (EC) in the Clausius-Clapeyron plot.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: November 24, 2009
    Assignees: Centre National de la Recherche, Universite de Perpignan
    Inventors: Driss Stitou, Pierre Neveu, Bernard Spinner, Bruno Spinner, legal representative, Caroline Spinner Brossard, legal representative, Anne Christel Spinner Kohler, legal representative, Camille Spinner, legal representative, Martin Spinner, legal representative
  • Publication number: 20090199578
    Abstract: 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 Tf<?20° C., from an available heat source at a temperature Th of 60-80° C. and a heat sink at the ambient temperature To of 10° C.-25° C. It comprises two coupled dipoles, operating in phase. One of the dipoles may be regenerated from a heat source at the temperature Th and a heat sink at To, and produce refrigeration at the temperature Tf with a heat sink at a temperature below the ambient temperature To. The other dipole may be regenerated from a heat source at the temperature Th and a heat sink at the temperature To.
    Type: Application
    Filed: November 3, 2005
    Publication date: August 13, 2009
    Inventors: Driss Stitou, Nathalie Mazet, Bernard Spinner, Caroline Spinner Brossard, Anne Christel Spinner Kohler, Bruno Spinner, Martin Spinner, Camille Spinner
  • Publication number: 20090094996
    Abstract: 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 Tf<?20° C., from an available heat source at a temperature Th of 60-80° C. and a heat sink at the ambient temperature To of 10° C.-25° 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 Tf with a heat sink at the ambient temperature To. The thermochemical phenomena in the other dipole are such that this dipole may be regenerated from the heat source Th and a heat sink-at the temperature To.
    Type: Application
    Filed: November 4, 2005
    Publication date: April 16, 2009
    Inventors: Driss Stitou, Nathalie Mazet, Bernard Spinner, Caroline Spinner Brossard, Anne Christel Spinner Kohler, Bruno Spinner, Martin Spinner, Camille Spinner
  • Publication number: 20080202132
    Abstract: 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.
    Type: Application
    Filed: March 12, 2004
    Publication date: August 28, 2008
    Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Driss Stitou, Olivier Bertrand, Bernard Spinner, Bruno Spinner, Caroline Spinner Brossard, Anne Christel Spinner Kohler, Nathalie Mazet, Martin Spinner
  • Publication number: 20070051118
    Abstract: The invention relates to refrigeration at TU by a reversible sorption system. The installation comprises a reactor (1) in which a reversible sorption between a gas G and a sorbent S takes place, a device (2) in which a reversible phenomenon involving the gas G takes place, means for bringing (2) into communication with (1), and means for isolating them, the equilibrium curve for the reversible phenomenon in (2) lying within a lower temperature range than that of the equilibrium curve for the reversible sorption in (1) in the Clausius-Clapeyron plot. The device (2) contains, apart from the gas G, a liquid/solid phase change material M having a solidification temperature TS below the frigeration working temperature TU. Use for freezing various products or for producing chilled water or ice.
    Type: Application
    Filed: July 11, 2003
    Publication date: March 8, 2007
    Inventors: Driss Stitou, Olivier Bertrand, Bernard Spinner, Caroline Brossard, Anne Christel Kohler, Nathalie Spinner, Martin Spinner