Pool type liquid metal fast spectrum reactor using a printed circuit heat exchanger connection to the power conversion system

A pool type liquid metal fast spectrum reactor comprising:

• a vessel;
• a lower plenum defined in the vessel;
• a reactor core disposed in the vessel above the lower plenum;
• an upper plenum defined in the vessel above the reactor core;
• a number of coolant pump inlet plenums defined in the vessel;
• a number of coolant pumps, each coolant pump being structured to move a fluid from one of the number of coolant pump inlet plenums to the lower plenum;
• and
• a number of printed circuit heat exchangers, each printed circuit heat exchanger disposed between the upper plenum and one of the number of coolant pump inlet plenums, each printed circuit heat exchanger comprising:
• a core formed from a stack of plates diffusion bonded together, the core having:
• a top face, a bottom face disposed opposite the top face, a first side face extending between the top face and the bottom face, and a second side face disposed opposite the first side face;
• a plurality of primary channels defined in the core, each of the primary channels extending from a primary inlet defined in the first side face to a primary outlet defined in the second side face, wherein each primary inlet is in direct fluid communication with the upper plenum, and wherein each primary outlet is in direct fluid communication with one coolant pump inlet plenum of the number of coolant pump inlet plenums;
• and
• a plurality of secondary channels defined in the core, each of the secondary channels extending among at least some of the primary channels from a secondary inlet defined in the top face to a secondary outlet defined in the top face.