Bloom Energy Corporation

Bloom Energy Coporation

David Weingaertner

Martin Perry

Swaminathan Venkataraman

Arne Watson Ballantine

Michael Petrucha

Matthias Gottmann

Vlad Kalika

David Edmonston

Jayakumar Krishnadass

John Fisher

Jessica Mahler

Nilanjana Basu

Navaneetha Krishnan

Ivan Hartana

David Trevisan

Gilbert Richards

Ross Parker

William David Lyle

Chockkalingam Karuppaiah

Michael Gasda

Fred Mitlitsky

Chad Pearson

Shraddesh Malviya

Emad El Batawi

Srikanth Ranganathan

Andy Ta

Ram Ramanan

Shannon Bell

Venkat Ramani

Ali Zargari

Pramod Vachhani

Stuart Aaron

Alex Clarabut

Jason Hixson

Laxmikant Girwalkar

Michael L Lee

Samuel Juday

Greg Young

Virpaul Bains

James F McElroy

Harald Herchen

Tad Armstrong

Ranganathan Gurunathan

Prasad Pmsvvsv

K R Sridhar

Stephen Couse

Dien Nguyen

Carl Cottuli

Siddharth Patel

James Smith

Brent D Miller

Christian Daco

Adil Ashary

Carlton Cottuli

Mark Stanton

Tyler Dawson

Daniel Baynes

David Higdon

Ananda Sundararajan

Yashas Keshav

Jesse Doty

Alejandro Carlos Lavernia

Ryan Johnson

Andrew James Hall

Deepak Shukla

Brent Cheldelin

Barry Sharpe

Santi Lara

Rajan Surve

John O'Toole

Aniket Pratap

Navaneethakrishnan Govindarasu

Nandan Joshi

Kim Nguyen

Suthitham Kusolasak

Richard Dole

Sean Dunn

KR Sridhar

A fuel cell system and method for using a peak shaving gas, the system including: a fuel inlet configured to receive fuel from a fuel source; a catalytic partial oxidation (CPOx) reactor configured to at least partially oxidize the fuel during startup of the system; a blower configured to provide air to the CPOx reactor; a gas analyzer configured to determine a composition of fuel provided to the CPOx reactor from the fuel inlet; an oxidation catalyst configured to reduce an Ocontent of fuel received from the CPOx reactor; a reforming catalyst configured to partially reform fuel received from the oxidation catalyst; and a stack of fuel cells configured to generate electricity using fuel received from the reforming catalyst.

Solid oxide fuel cell system and method of operating the same using peak shaving gas

A method of operating a fuel cell system includes vaporizing a liquid fuel in a vaporizer located in a hot box using heat generated by the fuel cell system to form a fuel vapor, and providing the fuel vapor to a stack of fuel cells located in the hot box to generate power.

Fuel cell system including alcohol vaporization components and method of operating the same

A method for operating a fuel cell system is provided. The method includes controlling a provision of fuel to the fuel cell system operating in a steady-state mode. The catalyst sensor is operated by providing a portion of the fuel and anode exhaust generated by the system to the catalyst sensor. Further, a change in an outlet temperature of the catalyst sensor is detected. Thereafter, it is determined whether a reformation catalyst of the catalyst sensor is poisoned by contaminants in the fuel based on the detected change in the outlet temperature.

Fuel cell system containing catalyst based fuel contamination sensor and method of operating thereof

A fuel cell system and method, the system including a hotbox, a fuel cell stack disposed in the hotbox, an anode tail gas oxidizer (ATO) disposed in the hotbox, and a fuel exhaust processor fluidly connected to the hotbox. The fuel exhaust processor includes a first hydrogen pump configured to extract hydrogen from the anode exhaust received from the fuel cell stack and to output the hydrogen to a first hydrogen stream provided to the fuel cell stack, a second hydrogen pump configured to extract hydrogen from anode exhaust output from the first hydrogen pump and to output the hydrogen to the first hydrogen stream, and a third hydrogen pump configured to extract hydrogen from anode exhaust output from the second hydrogen pump and to output the hydrogen to a second hydrogen stream provided to the ATO.

Fuel cell system including fuel exhaust processor and method of operating the same

A method of operating an electrolyzer module includes providing a first air stream and steam into a stack of electrolyzer cells located in a hotbox and outputting a product stream containing hydrogen and steam, and an oxygen exhaust stream, providing the product stream to an internal product cooler (IPC) heat exchanger located in the hotbox to reduce the temperature of the product stream by transferring heat to the first air stream, and providing the product stream from the IPC to an external product cooler (EPC) heat exchanger located outside of the hotbox and inside of a cabinet housing the hotbox to further reduce the temperature of the product stream by transferring heat to a fluid stream.

Electrolyzer cell module and method of operating thereof using separate stack air flow and product cooling flow

An electrolyzer system includes a steam generator configured to generate steam, a stack of solid oxide electrolyzer cells configured to generate a hydrogen stream using the steam received from the steam generator, and a water preheater configured to preheat water provided to the steam generator using heat extracted from oxygen exhaust output from the stack.

Electrolyzer system with steam generation and method of operating same

Systems, devices, and methods for electrolysis at very large scale (e.g., exceeding 100 megawatts (MW), and at gigawatt (GW) scale having a solid oxide electolyzer cell (SOEC) system including one or more SOEC columns, and one or more heat exchangers, each of the heat exchangers configured to receive input stream that is used to heat respective SOEC columns, wherein each of the heat exchangers is located along respective SOEC columns such that the input steam exiting the heat exchanger is directed towards adjacent SOEC columns.

SOEC integration with ultra hot steam

An electrolyzer system and a fuel cell system that include hydrogen blowers configured to compress hydrogen streams generated by the systems. The electrolyzer system includes a steam generator configured to generate steam, a stack of solid oxide electrolyzer cells configured to generate a hydrogen stream using the steam received from the steam generator, a hydrogen blower configured to pressurize the hydrogen stream generated by the stack, and a hydrogen processor configured to compress the pressurized hydrogen stream.

An electrolyzer system includes a stack of solid oxide electrolyzer cells configured receive steam and output a hydrogen exhaust and an oxygen exhaust, a supplemental steam generator configured to generate the steam provided to the stack by vaporizing water using heat extracted from the oxygen exhaust, a water preheater configured to preheat water using heat extracted from the oxygen exhaust, and a primary steam generator configured to generate the steam provided to the stack by vaporizing the water preheated by the water preheater.

A fuel cell system includes at least one hot box including a fuel cell stack and producing an anode exhaust product, at least one hydrogen pump, at least one product conduit fluidly connecting an anode exhaust product outlet of the hot box to an inlet of the at least one hydrogen pump, a compressed hydrogen product conduit connected to a compressed hydrogen product outlet of the at least one hydrogen pump, and at least one effluent conduit connected to an unpumped effluent outlet of the at least one hydrogen pump. Additional embodiments include a fuel cell system in which the anode exhaust product stream is provided to at least one carbon dioxide pump to generate a compressed carbon dioxide product and an unpumped effluent that may be recycled to the at least one hot box of the fuel cell system. In various embodiments, the fuel cell system may use or recapture essentially all of the hydrogen content and nearly all of the carbon content of the input fuel that is provided to the fuel cell system.

Fuel cell systems and methods with improved fuel utilization

A method of operating a solid oxide electrolyzer system includes providing a water inlet stream to at least one solid oxide electrolyzer cell (SOEC), generating a wet hydrogen product stream from the at least one SOEC, providing the wet hydrogen product stream to at least one hydrogen pump, generating a compressed hydrogen product and an unpumped effluent in the at least one hydrogen pump, and recycling at least a portion of the unpumped effluent upstream of the at least one hydrogen pump.

Solid oxide electrolyzer systems containing hydrogen pump and method of operating thereof

A fuel cell system includes a fuel cell stack, an anode tail gas oxidizer (ATO), an ATO injector configured to mix a first portion of an anode exhaust from the fuel cell stack with a cathode exhaust from the fuel cell stack and to provide a mixture of the first portion of the anode exhaust and the cathode exhaust into the ATO, an anode exhaust conduit which is configured to provide the first portion of the anode exhaust into the ATO injector, and cathode exhaust conduit which is configured to provide at least a portion of the cathode exhaust from the fuel cell stack into the ATO injector. The ATO injector includes injector tubes or injection apertures.

Fuel cell system including ATO injector and method of operating the same

A method of operating a fuel cell system includes providing fuel and air to a stack of fuel cells located in a hotbox, operating the stack to generate an anode exhaust and a cathode exhaust, in a startup mode, providing a first amount of the anode exhaust and the cathode exhaust to an anode tail gas oxidizer (ATO) located in the hotbox to oxidize the anode exhaust and to generate heat which is provided to the stack, and in a steady-state mode, stopping providing the anode exhaust to the ATO or providing to the ATO a second amount of the anode exhaust which is smaller than the first amount, and providing the anode exhaust and the cathode exhaust outside the hotbox.

Fuel cell system including anode exhaust diversion and method of operating the same

A fuel cell system includes at least one of plural electrochemical pump separators to separate carbon dioxide from a fuel exhaust stream or a combination of a gas separator and a fuel exhaust cooler located outside a hotbox.

Solid oxide fuel cell system with hydrogen pumping cell with carbon monoxide tolerant anodes and integrated shift reactor

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Sunnyvale, CA, United States of America

David Weingaertner