Abstract:
A high temperature electrochemical system, such as a solid oxide fuel cell system, generates hydrogen and optionally electricity in a fuel cell mode. At least a part of the generated hydrogen is separated and stored or provided to a hydrogen using device. A solid oxide regenerative fuel cell system stores carbon dioxide in a fuel cell mode. The system generates a methane fuel in an electrolysis mode from the stored carbon dioxide and water by using a Sabatier subsystem. Alternatively, the system generates a hydrogen fuel in an electrolysis mode from water alone.
Abstract:
A solid oxide regenerative fuel cell system is used to supply power in a fuel cell mode and to generate metabolic oxygen and a hydrocarbon fuel reserve in an electrolysis mode. The system may also be used as a secondary power source or for energy peak shaving applications.
Abstract:
A method of operating a fuel cell electrochemical system includes receiving at least one of a cost of electricity and a cost of fuel and adjusting at least one of an operating efficiency and throughput of the fuel cell based on the at least one of the received cost of electricity and the received cost of fuel.
Abstract:
A Solid Oxide Regenerative Fuel Cell (SORFC) or a Solid Oxide Fuel Cell (SOFC) is incorporated into an electrically powered airplane to provide either regenerative or primary electrical energy. The SORFC, the SOFC, or any other suitable fuel cell within an airplane may also be used to heat payload or equipment within the airplane. The SORFC is not only capable of generating electrical energy from fuel and a suitable oxidizer, but can also generate fuel through electrolysis of oxidized fuel. Thus, the SORFC system powering an airplane can obtain oxygen oxidant reactant from the air and avoid the complexity, weight, volume, and cost associated with oxygen storage.
Abstract:
Solid oxide fuel cell power generation systems which are capable of producing high-quality heat are used to drive refrigeration systems. The amount of electrical energy produced and the cooling capacity obtainable are well matched to electronic data center power and cooling needs. The power generation system includes a solid oxide fuel cell stack, a heat pump and an optional turbine.