公开(公告)号：US11569001B2

公开(公告)日：2023-01-31

申请号：US17095834

申请日：2020-11-12

Applicant: Holtec International

Inventor： Krishna P. Singh ,  Indresh Rampall ,  Joseph Gerald Leo Rajkumar

IPC: F01K25/08 ,  G21C19/07 ,  G21F1/08 ,  F22B1/16 ,  F22B37/00 ,  F22B33/18

Abstract: A neutron absorbing insert for use in a fuel rack. In one aspect, the insert includes: a plate structure having a first wall and a second wall that is non-coplanar to the first wall; the first and second walls being formed by a single panel of a metal matrix composite having neutron absorbing particulate reinforcement that is bent into the non-coplanar arrangement along a crease; and a plurality of spaced-apart holes formed into the single panel along the crease prior to bending.

公开(公告)号：US11504814B2

公开(公告)日：2022-11-22

申请号：US17073859

申请日：2020-10-19

Applicant: HOLTEC INTERNATIONAL

Inventor： Krishna P. Singh ,  Joseph Gerald Leo Rajkumar

IPC: F24F7/00 ,  B23P15/26 ,  F28D7/10 ,  F28B1/06 ,  F28B9/10 ,  F28F1/16 ,  F28F1/20 ,  F28F1/00 ,  B21C23/00 ,  F28D1/02

Abstract: A vertical bundle air-cooled heat exchanger, a finned tube assembly for an air cooled condenser and method for forming the same, and a system for removing thermal energy generated by radioactive materials. In one aspect, an air cooled condenser sized for industrial and commercial application includes an inlet steam distribution header for conveying steam, a condensate outlet header for conveying condensate, an array of tube bundles each having a plurality of finned tube assemblies having a bare steel tube with an exposed outer surface and a set of aluminum fins brazed directly onto the tube by a brazing filler metal. The steel tubes may be spaced apart by the aluminum fins and have an inlet end fluidly coupled to the inlet steam distribution header and an outlet end fluidly coupled to the outlet header. A forced draft fan may be arranged to blow air through the tube bundles.

公开(公告)号：US20190283191A1

公开(公告)日：2019-09-19

申请号：US16432505

申请日：2019-06-05

Applicant: Holtec International

Inventor： Krishna P. Singh ,  Indresh Rampall ,  Joseph Gerald Leo Rajkumar ,  Frank David Sanderlin

IPC: B23P15/26 ,  B21C23/00 ,  F28D1/02 ,  F28B1/06 ,  F28B9/10 ,  F28F1/16 ,  F28F1/00 ,  F28D7/10 ,  F28F1/20

Abstract: A vertical bundle air-cooled heat exchanger. In one embodiment, the invention can be a vertical bundle air-cooled condenser comprising: at least one tube bundle assembly comprising: a tube bundle comprising a plurality of finned tubes arranged in a substantially vertical and side-by-side orientation, each of the plurality of finned tubes comprising a cavity; a top header pipe comprising an inlet header cavity operably coupled to a source of steam; a bottom header pipe comprising an outlet header cavity for collecting condensate; top ends of the plurality of finned tubes coupled to the top header pipe and the bottom ends of the plurality of finned tubes coupled to the bottom header pipe; and a shell having an open top end and open bottom end, the at least one tube bundle assembly positioned within the shell.