Heat exchanger in composite material and method for making same

Details Heat exchanger in composite material and method for making same Heat exchanger in composite material and method for making same

F - Mech Eng,Light,Heat,Weapons

02

K

F02K 1/82 (2006.01) F23R 3/00 (2006.01)

Patent

CA 2317707

The invention concerns a heat exchanger comprising an intermediate part (14) made of refractory composite material, for instance of C/C composite, wherein are formed ducts for fluid (16) circulation, and which is interposed between a part made of refractory composite material, for instance with a ceramic matrix, such as a C/SiC composite, forming a thermal screen (12) and a part made of thermostructural composite material, for instance a C/C composite, forming a structure maintaining the exchanger (18), the components of the exchanger being assembled by brazing. The heat exchanger is useful as wall element exposed to an intense heat flow particularly in a nuclear fusion reactor and a ramjet combustion chamber.

L'échangeur de chaleur comprend une partie intermédiaire (14) en matériau composite réfractaire, par exemple en composite C/C, dans laquelle sont formés des canaux de circulation de fluide (16), et qui est intercalée entre une partie en matériau composite réfractaire, par exemple à matrice céramique, tel que composite C/SiC, formant écran thermique (12) et une partie en matériau composite thermostructural, par exemple composite C/C, formant structure de maintien de l'échangeur (18), les parties constitutives de l'échangeur de chaleur étant assemblées par brasage. L'échangeur de chaleur est utilisable comme élément de paroi exposé à un flux thermique intense notamment dans un réacteur de fusion nucléaire et une chambre de combustion de statoréacteur.

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