Demonstration of a Highly Efficient SOFC System with Combined Partial Oxidation and Steam Reforming

Schimanke, Danilo; Posdziech, Oliver; Erik, Björn; Kluge, Stefan; Strohbach, Thomas; Wunderlich, Christian

doi:10.1149/1.3569998

Cited by 24 publications

(7 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The solid oxide cell (SOC) technology, which was developed in the last decades to a near-commercial state, [10][11][12][13] fulfills most of these criteria. With the development of anode supported cells, high current densities at moderate operating temperatures (< 800°C) can be achieved.…”

mentioning

confidence: 99%

High-Temperature Co-Electrolysis: A Versatile Method to Sustainably Produce Tailored Syngas Compositions

Dittrich

Nohl

Jaekel

et al. 2019

J. Electrochem. Soc.

View full text Add to dashboard Cite

High-temperature co-electrolysis of carbon dioxide and steam is a promising method to produce 'white' syngas by making use of renewable energy and carbon dioxide as sustainable feedstock. The technological key advantage is the possibility to tailor syngas compositions over a broad range. This paper presents a systematic investigation of the syngas tailoring process by establishing relationships between feed gas compositions and flow rates to the syngas ratio. A linear dependence between the H 2 O:CO 2 ratio in the feed gas and the H 2 :CO ratio in the output gas was observed. Furthermore, the syngas ratio remains mostly invariant upon variations in electrochemical potential and fluctuating gas utilizations/flow rates during operation of a co-electrolysis cell. Most importantly, the co-electrolysis performance was demonstrated to operate at high current densities of up to 3.2 A•cm −2 over a broad range of feed gas compositions with faradaic efficiencies of nearly 100%. The possibility to operate co-electrolysis under transient load conditions renders this method particularly suitable in future scenarios of intermittent availability of renewables. The results described here illustrate the versatility of co-electrolysis, which can produce all relevant syngas compositions in a single-step process at constantly high performance.

show abstract

mentioning

confidence: 99%

High-Temperature Co-Electrolysis: A Versatile Method to Sustainably Produce Tailored Syngas Compositions

Dittrich

Nohl

Jaekel

et al. 2019

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…Firstly, the temperature measured at the stack top plate does not reflect the real temperature inside the stack. In SOFC for example, measured temperatures inside the stacks of other research groups 37,38 are much higher compared to the temperatures of the stack end plates. Secondly, the thermal inertia of the stack due to its specific heat capacity has to be taken into account.…”

Section: Resultsmentioning

confidence: 96%

Electrochemical Quality Assurance of Solid Oxide Electrolyser (SOEC) Stacks

Lang

Bohn

Couturier

et al. 2019

J. Electrochem. Soc.

View full text Add to dashboard Cite

 Users may download and print one copy of any publication from the public portal for the purpose of private study or research.  You may not further distribute the material or use it for any profit-making activity or commercial gain  You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.

show abstract

“…A steam reformer based system, being the next preferable concept from an efficiency perspective, was not considered as suitable for small‐scale power generators in India, due to the limitations in water supplies or water recovery (due to climate conditions), as well as the increased maintenance requirements. The series connection of SOFC stacks with combined partial oxidation and steam reforming was described in as an option for increasing the system efficiency without additional water supply. Although this concept offers promising options, it could not be further considered due to patent restrictions.…”

Section: System Architecturementioning

confidence: 99%

Development of a SOFC Power Generator for the Indian Market

Pfeifer

Chakradeo²,

Ahire³

et al. 2017

Fuel Cells

View full text Add to dashboard Cite

Contracted by the company h2e Power Systems Pvt. Ltd. based in Pune, India, Fraunhofer IKTS has developed a 1 kW(el) solid oxide fuel cell (SOFC) power generator during a three year system engineering and technology transfer project. The fuel cell system is based on the CFY stack technology by Plansee SE and IKTS, which incorporates state-of-theart ESC with Scandia-doped Zirconia electrolytes. For the SOFC power generator, a chromium based interconnects (CFY) stack was integrated with a pre-reformer, a tail-gas oxidizer and heat exchangers into a HotBox-module following a novel concept for least-space-demanding reactor integration and flow distribution. The applied system concept aimed at a very compact and robust, yet highly efficient power generator with optional heat extraction. Two major design decisions have been introduced in the process layout, i.e., a rated fuel utilization in the stack of 85% as well as a POX-air pre-heater for reducing the reformer air flow to lowest possible values. This approach lead to a waterless SOFC system with a net electrical efficiency above 40%. Two proof-of-concept (PoC) prototype systems were commissioned and tested for system concept validation. Based on the operating experience, three improved prototype units were built at IKTS and shipped to India for initial demonstration projects and field trials at the customer's site. At the same time, the technology transfer to the customer was initiated, in order to enable for a local manufacturing and deployment of SOFC systems in India. This paper outlines the system development approach and major technical achievements demonstrated on PoC prototype level.

show abstract

Demonstration of a Highly Efficient SOFC System with Combined Partial Oxidation and Steam Reforming

Cited by 24 publications

References 5 publications

High-Temperature Co-Electrolysis: A Versatile Method to Sustainably Produce Tailored Syngas Compositions

High-Temperature Co-Electrolysis: A Versatile Method to Sustainably Produce Tailored Syngas Compositions

Electrochemical Quality Assurance of Solid Oxide Electrolyser (SOEC) Stacks

Development of a SOFC Power Generator for the Indian Market

Contact Info

Product

Resources

About