公开(公告)号：US20250012260A1

公开(公告)日：2025-01-09

申请号：US18451247

申请日：2023-08-17

Applicant: Holtec International

Inventor： Krishna P. SINGH ,  Dharendra Yogi GOSWAMI ,  Indresh Rampall

IPC: F01D15/10 ,  F03G6/00

Abstract: A hybrid power generation system in one embodiment comprises a green boiler containing a thermal mass composition operable to store thermal energy, a solar energy collection system which absorbs solar energy to heat a first working fluid and in turn the thermal mass composition, and a power generation system comprising a steam turbine coupled to an electric generator to produce electricity and a nuclear steam supply system which convert a second working fluid comprising water from liquid to steam. Steam output by the nuclear steam supply system flows through the green boiler and is heated by absorbing heat from the thermal mass composition to increase the enthalpy of the steam and concomitantly electric power output from the turbine-generator. The nuclear steam supply system and green boiler may be retrofit to replace existing fossil fuel steam generation systems while retaining the energy conversion part of the fossil power plant.

公开(公告)号：US12176116B2

公开(公告)日：2024-12-24

申请号：US18406873

申请日：2024-01-08

Applicant: Holtec International

Inventor： Krishna P. Singh ,  Indresh Rampall

IPC: G21D1/00 ,  F01K3/00 ,  F01K3/18 ,  F01K3/26 ,  F01K7/16 ,  F01K13/02

Abstract: A power generation system and related method for repowering a fossil-fueled power plant using a carbon-free nuclear steam supply system (NSSS) which replaces the existing fossil plant steam generator which burns fossil fuel such as coal, oil, or natural gas. The existing fossil plant energy conversion system including the turbine-generator (turbogenerator) and auxiliary components of the Rankine cycle is retained. The NSSS may include a small modular reactor (SMR) unit comprising a reactor vessel with nuclear fuel core and steam generator which receives heated primary coolant from the reactor to produce main steam to operate the Rankine cycle. The main steam output by the SMR unit is compressed in a steam compressor to increase its pressure to a level necessary to operate the turbogenerator. The compressor may be operated via a portion of the main steam. An intercooler of the compressor may be used for main steam reheating.

公开(公告)号：US20240410343A1

公开(公告)日：2024-12-12

申请号：US18451235

申请日：2023-08-17

Applicant: HOLTEC INTERNATIONAL

Inventor： Krishna P. SINGH ,  Dharendra Yogi Goswami ,  Indresh Rampall

IPC: F03G6/00 ,  F24S10/30 ,  F24S20/20 ,  F24S80/20

Abstract: A solar power generation system includes a thermal energy storage vessel containing a thermal mass composition operable to store thermal energy, solar energy collection system, and power generation system. The collection system comprises a first closed flow loop including a solar collector which absorbs solar energy and heats a first working fluid. The heated first working fluid recirculates through a first closed flow loop through and heats the thermal mass composition. The generation system comprises a second closed flow loop including a turbine-generator. The second closed flow loop recirculates a second working fluid through the thermal mass composition to absorb thermal energy and heat the second working fluid which flows to the turbine and the generator produces electricity. The second working fluid may be water/steam or a compressible gas. The thermal mass composition comprises a mixture of a phase change material such as salt and a metallic material.

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.

公开(公告)号：US20170051981A1

公开(公告)日：2017-02-23

申请号：US15271818

申请日：2016-09-21

Applicant: Holtec International

Inventor： Krishna P. Singh ,  Vytautas Vincas Maciunas ,  Indresh Rampall

IPC: F28B1/06 ,  F01K9/00

CPC classification number: F28B1/06 ,  F01K9/003 ,  F28B1/02 ,  F28B9/06

Abstract: An indirect dry cooling system suitable for steam condensing applications in a power plant Rankine cycle in one embodiment includes an air cooled condenser having a plurality of interconnected modular cooling cells. Each cell comprises a blower and tube bundle assemblies each including inlet headers, outlet headers, and plurality of tubes extending between the headers. In one embodiment, the tube bundle assemblies may be shop fabricated as a unit to form an A-frame or V-frame cell construction The tubes may be finned. Steam circulating in a closed flow loop on the tube side from a steam turbine is cooled in each cell by ambient air blown through the tube bundles, thereby forming liquid condensate. The condensate is collected and returned to the Rankine cycle for reheating to form steam to drive the turbine.

Abstract translation: 适用于发电厂蒸汽冷凝应用的间接干式冷却系统在一个实施例中，兰金循环包括具有多个互连的模块化冷却单元的空气冷却冷凝器。 每个电池包括鼓风机和管束组件，每个组件包括入口集管，出口集管和在集管之间延伸的多个管。 在一个实施例中，管束组件可以作为单元进行车间制造以形成A框架或V形框架单元结构。管可以是翅片。 在蒸气涡轮机的管侧的封闭流动回路中循环的蒸汽在通过管束吹送的环境空气中被冷却，从而形成液体冷凝物。 冷凝物被收集并返回到兰金循环，用于再加热以形成蒸汽以驱动涡轮机。

公开(公告)号：US20150330260A1

公开(公告)日：2015-11-19

申请号：US14710852

申请日：2015-05-13

Applicant: Holtec International

Inventor： Akhilesh Vidyutkumar Bapat ,  Indresh Rampall ,  Vytautas Vincas Maciunas

IPC: F01K17/04 ,  F01K3/18 ,  F01K9/00

CPC classification number: F01K17/04 ,  F01K3/18 ,  F01K9/003 ,  F22G5/12 ,  F28B1/02 ,  F28B9/02 ,  F28F2250/06 ,  F28F2265/00

Abstract: A steam conditioning system for discharging bypass steam into a condenser of a steam powered generating plant and other uses. The system includes a steam conditioning device comprising an inner evaporative core and an outer shell. The core may be formed of a tubular piping section disposed at least partially inside the outer shell forming an annular space therebetween. An inlet end of the core receives steam from a piping header fluidly connected to an upstream desuperheating pressure reducing station which injects liquid coolant into the steam stream. Steam discharges through the core outlet end into the outer shell, reverses direction, and flows into the condenser. In one embodiment, the steam conditioning device may be disposed inside the dome of the condenser except for the inlet end. The device intends to increase flow residence time to evaporate entrained carryover coolant droplets in the incoming steam before release to the condenser.

Abstract translation: 一种用于将旁路蒸汽排放到蒸汽发电设备的冷凝器中的蒸汽调节系统和其它用途。 该系统包括蒸汽调节装置，其包括内部蒸发核心和外部壳体。 芯部可以由至少部分地设置在外壳内部的管状管道部分形成，在其间形成环形空间。 芯的入口端部从流体连接到上游减温减压站的管道集管接收蒸汽，其将液体冷却剂注入到蒸汽流中。 蒸汽通过芯出口端排放到外壳中，反向，并流入冷凝器。 在一个实施例中，除了入口端之外，蒸汽调节装置可以设置在冷凝器的圆顶内部。 该装置旨在增加流动停留时间，以在释放到冷凝器之前蒸发进入的蒸汽中夹带的携带冷却剂液滴。