公开(公告)号：US20240068749A1

公开(公告)日：2024-02-29

申请号：US18374903

申请日：2023-09-29

Applicant: Holtec International

Inventor： Krishna P. SINGH ,  Joseph Gerald Leo RAJKUMAR ,  Vytautas Vincas MACIUNAS ,  Raghavendra PALLE ,  Debabrata MITRA-MAJUMDAR ,  Abrar Hasan MOHAMMAD ,  John D. GRIFFITHS

IPC: F28B1/06 ,  G21F5/12

CPC classification number: F28B1/06 ,  G21F5/12 ,  G21F5/008

Abstract: An air-cooled condenser system for steam condensing applications in a power plant Rankine cycle includes an air cooled condenser having a plurality of interconnected modular cooling cells. A method for forming an axial flow baffle for a shell and tube heat exchanger includes providing a baffle workpiece, locating a centerpoint of a first axial flow tube aperture, drilling flow holes around the centerpoint of the flow aperture, and drilling a central tube hole at the centerpoint. A method of cooling high level waste includes surrounding a cask comprising an external surface and an internal storage cavity containing the high level radioactive waste which emits heat with a cooling water header; and discharging cooling water radially inwards from the cooling water header onto the external surface of the cask from the plurality of water dispensing outlets arranged on the cooling water header.

公开(公告)号：US20210278134A1

公开(公告)日：2021-09-09

申请号：US17193536

申请日：2021-03-05

Applicant: HOLTEC INTERNATIONAL

Inventor： Krishna P. SINGH ,  Akhilesh Vidyutkumar BAPAT ,  Vytautas Vincas MACIUNAS ,  Raghavendra PALLE

IPC: F28B1/06

Abstract: An induced draft air-cooled condenser for steam condensing applications includes a pair of inclined tube bundles defining a interior space therebetween in fluid communication with ambient air heated as it flows through the tube bundles. A fan supported above the interior space comprises rotatable fan blades disposed inside a cylindrical annular fan shroud. A drive mechanism operable to rotate the fan blades includes a motor operably coupled to the fan blades. The motor is supported inside the fan shroud and may be housed in a protective enclosure which may be insulated. A motor cooling system includes an air inlet duct fluidly coupled to ambient air outside the shroud and the enclosure. When the fan operates, cool ambient air is drawn via a vacuum formed by the fan through the duct to cool the motor. The air thus bypasses and is not heated by the tube bundles.

公开(公告)号：US20210210242A1

公开(公告)日：2021-07-08

申请号：US17073976

申请日：2020-10-19

Applicant: Holtec International

Inventor： Krishna P. SINGH ,  Joseph Gerald Leo RAJKUMAR ,  Vytautas Vincas MACIUNAS ,  Raghavendra PALLE ,  Debabrata MITRA-MAJUMDAR ,  Abrar Hasan MOHAMMAD ,  John D. GRIFFITHS

IPC: G21F5/10 ,  G21C19/40 ,  G21F5/12

Abstract: An air-cooled condenser system for steam condensing applications in a power plant Rankine cycle includes an air cooled condenser having a plurality of interconnected modular cooling cells. A method for forming an axial flow baffle for a shell and tube heat exchanger includes providing a baffle workpiece, locating a centerpoint of a first axial flow tube aperture, drilling flow holes around the centerpoint of the flow aperture, and drilling a central tube hole at the centerpoint. A method of cooling high level waste includes surrounding a cask comprising an external surface and an internal storage cavity containing the high level radioactive waste which emits heat with a cooling water header; and discharging cooling water radially inwards from the cooling water header onto the external surface of the cask from the plurality of water dispensing outlets arranged on the cooling water header.