Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Commissariat a L'energie Atomique

Lionel Cachon

Xavier Jeanningros

Alexandre Molla

Emmanuel Rigal

Fabien Vidotto

Jean-Marc Leibold

Isabelle Moro-Le Gall

Franck Dechelette

Fabrice Delassalle

Chiara Galati

Christophe Garnier

Julien Grosse

Julien Serre

Sébastien Vincent

Francesco Vitillo

Fabrice Delasalle

A heat exchanger module having at least two fluid circuits, of longitudinal axis including a stack of plates, defining at least two fluid circuits, at least a part of the plates each including fluid circulation channels, the channels of at least one of the two circuits, referred to as first circuit, having at least one fluid supply and distribution zone for supplying and distributing fluid from outside the stack, forming a fluid pre-header, in which zone the channels are delimited by studs distributed over the surface of the plate; an exchange zone continuous with the pre-header and wherein the channels are each delimited by a groove separated from one another by a rib and extending along the longitudinal axis.

Heat exchanger module of the type having plates comprising channels incorporating at least one fluid supply and distribution zone formed by studs

A heat exchanger module with a longitudinal axis including a stack of plates defining at least two fluid circuits, at least a portion of the plates each including fluid circulation channels each delimited, at least in part, by a groove. A communication is produced between the channels within a same plate and between all the plates of a same circuit, in a feed or pre-collector zone, with a succession of channel groupings, two-by-two, in the form of bifurcations.

Plate heat exchanger module for which the channels integrate as input a uniform flow distribution zone and a fluid bifurcation zone

A heat exchanger for exchanging heat between two fluids, use of the exchanger with liquid metal and gas, and application to a fast neutron nuclear reactor cooled with liquid metal. The present invention concerns a heat exchanger () for exchanging heat between a first fluid (N) and a second fluid (Na). According to the invention, the structure of the heat exchanger makes it possible to supply and recover the primary fluid, such as sodium (Na), to and from a given longitudinal end () opposite the longitudinal end () by which the secondary fluid, such as nitrogen (N), is supplied and recovered. This allows a physical separation between the paths of the two fluids in the exchanger, with the possibility, in particular, of having restricted access for one of the fluids, such as sodium (Na) and non-restricted access for the other of the fluids, such as nitrogen (N).

Heat exchanger for exchanging heat between two fluids, use of the exchanger with liquid metal and gas, application to a fast neutron nuclear reactor cooled with liquid metal

A method for producing heat exchangers having at least two fluid circuits each having channels, including the following steps: producing one or a plurality of elements of a first fluid circuit, each element having at least two metal plates, at least one of which has first grooves; stacking the at least two metal plates of each element in such a way that the first grooves form the channels of the first circuit; assembling each element of the first circuit by diffusion welding between the two stacked metal plates; producing one or a plurality of elements of at least one second fluid circuit, each element of the second circuit having at least a portion of the channels of the second circuit; assembling, either by diffusion welding, or by brazing, or by diffusion brazing between the element or elements of the first circuit and the element or elements of the second circuit.

Method for producing a heat exchanger module having at least two fluid flow circuits

The present invention principally relates to a thermal insulation element () of cylindrical shape for a fluid transport pipe comprising an envelope () of longitudinal axis (X), a thermal insulation arranged in said envelope (), the envelope () comprising a deformable annular zone, comprising a first () and a second () cylindrical surface that overlap and are able to slide against each other in the case of movement imposed by thermal loads applied to said pipe insulation element (). The present invention also relates to a method of fabricating pipes for transporting fluids at high temperature, particularly hot gases, from elements according to the present invention by fitting a male connector of one element into a female connector of the other element.

Element for a pipe for transporting hot gases and method of fabricating said element

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Manosque, France

Lionel Cachon