Patent ID: 11879691
Assignee: GENERAL ELECTRIC COMPANY
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 18:
19. A method of fabricating a heat exchanger for exchanging heat between two fluid flows in counter-flow arrangement comprising:
casting a first set of heat exchanging passageways and a second set of heat exchanging passageways to form a core region, the core region having opposed distal ends and defining a length therebetween, the first set of heat exchanging passageways truncated proximate the opposed distal ends of the core region and the second set of heat exchanging passageways extending a length longer than a length of the first set of heat exchanging passageways, wherein when the casting is complete, the metal secures the first set of heat exchanging passageways in contact against at least one of the second set of heat exchanging passageways;
casting a tube plate about opposed distal ends of each heat exchanging passageway of the second set of heat exchanging passageways to define a plenum region adjacent the opposed distal ends of the core region, each of the plenum regions including a fluid inlet plenum and a fluid outlet plenum the tube plate disposed therebetween the fluid inlet plenum and the fluid outlet plenum, the fluid inlet plenum and the fluid outlet plenum each including a non-planar end; and
disposing a core shell about the core region and a plenum shell about each of the plenum regions.