公开(公告)号：US20230261215A1

公开(公告)日：2023-08-17

申请号：US17670263

申请日：2022-02-11

Applicant: Cummins Inc.

Inventor： John Robert PENDRAY ,  Charles J. VESELY ,  Scott Patrick BEARD

IPC: H01M8/04089 ,  H01M8/04746

CPC classification number: H01M8/04097 ,  H01M8/04761

Abstract: A method and system for recirculating an anode off gas in a fuel cell assembly includes receiving anode off gas and generating steam therefrom. A first flow of the steam is directed to a first control valve and a second flow of the steam is directed to a second control valve. The first and second control valves control steam that flows through the superheater and connects to a first ejector and a second ejector. In response to an operating parameter being equal to a threshold value, the first control valve is opened to allow the steam to pass through the superheater and subsequently at least partially drive the first ejector.

公开(公告)号：US20240021845A1

公开(公告)日：2024-01-18

申请号：US18251954

申请日：2021-11-23

Applicant: CUMMINS INC.

Inventor： John Robert PENDRAY ,  Charles VESELY

IPC: H01M8/04007 ,  H01M8/04089 ,  H01M8/04701

CPC classification number: H01M8/04059 ,  H01M8/04097 ,  H01M8/04716

Abstract: A recirculation system for a fuel cell includes a flow splitter operably coupled to an anode of the fuel cell and configured to receive an anode off gas therefrom, a superheater disposed downstream from the flow splitter and configured to cool a portion of the anode off gas received at the flow splitter, and a boiler operably coupled to the superheater and configured to receive the portion of the anode off gas cooled by the superheater, wherein the boiler is configured to generate steam and direct at least a portion of the generated steam to the superheater, and wherein the superheater is configured to use the generated steam to drive an ejector.

公开(公告)号：US20240113319A1

公开(公告)日：2024-04-04

申请号：US18478739

申请日：2023-09-29

Applicant: CUMMINS INC.

Inventor： John Robert PENDRAY ,  Achyut PAUDEL ,  Lars Krister HENRICHSEN ,  Enrique GARCIA-TORRESOLA ,  Jinyong LUO

IPC: H01M8/18 ,  C25B1/04 ,  C25B9/19 ,  C25B13/07 ,  C25B15/08 ,  H01M8/04014 ,  H01M8/04089 ,  H01M8/04119

CPC classification number: H01M8/186 ,  C25B1/04 ,  C25B9/19 ,  C25B13/07 ,  C25B15/083 ,  H01M8/04014 ,  H01M8/04097 ,  H01M8/04164 ,  H01M2008/1293

Abstract: A method includes providing steam to the solid oxide fuel cell stack, splitting exhaust gas from the cell stack into two portions, a first portion directed to a superheater and a second portion directed to an ejector and to a hydrogen separator. At least part of the first portion of the exhaust gas that is directed to the superheater is subsequently boiled in a boiler and then returned to the superheater. After being returned to the superheater, this part is directed to the ejector as high pressure steam so as to drive the ejector.