Commissariat a L'energie Atomique

Compagnie Generale Des Matieres Nucleaires

Christophe Bouzon

Jean-Antoine Gruss

Thierry Davin

Marie-Hélène Noire

The heat exchanger plates have the section shown, with raised sections on the upper and lower faces in which run the flow pipes of one of the fluids. Notches are created on the longitudinal ends to allow these pipes to communicate, their supply and evacuation from a lateral face of the plate, whereas the other fluid enters and leaves via the longitudinal faces. The exchanger is therefore easier to make. The plates are manufactured by extrusions and only machined to create the notches.

Heat exchanger plate and this exchanger

The invention concerns the production of a chemical sensor which can be used to measure nitric acidity. This sensor is produced using a sol-gel method for depositing a porous film, containing a colored indicator, on the core of an optic fiber. The pH of the initial sol is adjusted as are other conditions for implementing the sol-gel method to obtain stability of the signal (curvesto) emitted by the sensor in an 8N nitric medium for at least 1000 hours.

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Odos, France

Christophe Bouzon