The invention relates to a heat exchanger system for operating a fuel cell stack, comprising: a first compressor and a second compressor for the cathode gas fed to the fuel cell stack, the second compressor being fluidically downstream of the first compressor; a turbine, which is mechanically coupled to the second compressor and against which the cathode gas discharged from the fuel cell stack flows; a first heat exchanger, which is thermally coupled to the fed cathode gas between the first compressor and the second compressor; a second heat exchanger, which is thermally coupled to the fed cathode gas downstream of the second compressor; a fourth heat exchanger, which is thermally coupled to the discharged cathode gas downstream of the turbine; wherein the fourth heat exchanger is thermally variably coupled to the first heat exchanger and to the second heat exchanger in order to control a heat exchange for cooling the first heat exchanger and the second heat exchanger.

The invention relates to a heat exchanger system for operating a fuel cell stack, comprising: a first compressor and a second compressor for the cathode gas fed to the fuel cell stack, the second compressor being fluidically downstream of the first compressor; a turbine, which is mechanically coupled to the second compressor and against which the cathode gas discharged from the fuel cell stack flows; a first heat exchanger, which is thermally coupled to the fed cathode gas between the first compressor and the second compressor; a second heat exchanger, which is thermally coupled to the fed cathode gas downstream of the second compressor; a fourth heat exchanger, which is thermally coupled to the discharged cathode gas downstream of the turbine; wherein the fourth heat exchanger is thermally variably coupled to the first heat exchanger and to the second heat exchanger in order to control a heat exchange for cooling the first heat exchanger and the second heat exchanger.

A fuel cell power generation facility is proposed. The fuel cell power generation facility is configured with a plurality of fuel cell power generation modules, each of the fuel cell power generation modules including a frame with a power module complete (PMC), an electric module, and a filter module installed therein, an electric module reservoir installed in the frame for cooling the electric module, an electric module cooling device installed in the frame and connected to the electric module reservoir, and an air guide configured to guide air discharged from the electric module cooling device toward radiation fins configured for cooling a junction box of the PMC.

A fuel cell power generation facility is proposed. The fuel cell power generation facility is configured with a plurality of fuel cell power generation modules, each of the fuel cell power generation modules including a frame with a power module complete (PMC), an electric module, and a filter module installed therein, an electric module reservoir installed in the frame for cooling the electric module, an electric module cooling device installed in the frame and connected to the electric module reservoir, and an air guide configured to guide air discharged from the electric module cooling device toward radiation fins configured for cooling a junction box of the PMC.

A fuel cell device (10) comprising a reformer (26) is disclosed, which is provided for reforming fuel (B) for electrochemical conversion in a fuel cell unit (12), and a fuel cell unit (12), which is provided to electrochemically convert reformed fuel (RB). It is proposed to arrange a heat exchanger (40) downstream of the reformer (26) and upstream of the fuel cell unit (12) in relation to a supply of reformed fuel (RB) to the fuel cell unit (12).

A flame-assisted fuel cell gas turbine hybrid system including a first combustor, a second combustor, and a flame-assisted solid oxide fuel cell configured to receive syngas from the first combustor, react the syngas with oxygen ions to yield carbon dioxide and water, and provide unreacted syngas to the second combustor. The first combustor is configured to receive heated compressed air from an aircraft engine compressor and the second combustor is configured to provide heated air to an aircraft engine gas turbine to generate mechanical power.

A fuel cell system includes a hydrogen tank to store hydrogen, a fuel cell to receive hydrogen gas from the hydrogen tank to generate electricity, a temperature controller to adjust a temperature inside the hydrogen tank, and a control unit to control the temperature controller based on the amount of hydrogen remaining in the hydrogen tank, the control unit being configured to increase the temperature inside the hydrogen tank when the amount of the remaining hydrogen is equal to or less than a first predetermined value.

A fuel cell system includes a hydrogen tank to store hydrogen, a fuel cell to receive hydrogen gas from the hydrogen tank to generate electricity, a temperature controller to adjust a temperature inside the hydrogen tank, and a control unit to control the temperature controller based on the amount of hydrogen remaining in the hydrogen tank, the control unit being configured to increase the temperature inside the hydrogen tank when the amount of the remaining hydrogen is equal to or less than a first predetermined value.

A fuel cell system comprises a controller configured to determine whether a condition relating to a stop pattern of the fuel cell system satisfies a predetermined condition, and an output unit configured to output a warning when it is determined that the condition relating to the stop pattern satisfies the predetermined condition.

An energy storage system converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. An array of bricks incorporating internal radiation cavities is directly heated by thermal radiation. The cavities facilitate rapid, uniform heating via reradiation. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. Gas flows through structured pathways within the array, delivering heat which may be used for processes including calcination, hydrogen electrolysis, steam generation, and thermal power generation and cogeneration. Groups of thermal storage arrays may be controlled and operated at high temperatures without thermal runaway via deep-discharge sequencing. Forecast-based control enables continuous, year-round heat supply using current and advance information of weather and VRE availability. High-voltage DC power conversion and distribution circuitry improves the efficiency of VRE power transfer into the system.