A combined heat and power system and method of operation is provided. The system includes a combustion chamber configured to directly combust solid organic material. A compressor turbine is fluidly coupled to the combustion chamber. An expansion turbine is fluidly coupled to the combustion chamber. In an embodiment, the system has a low turbine pressure ratio.

A combined heat and power system and method of operation is provided. The system includes a combustion chamber configured to directly combust solid organic material. A compressor turbine is fluidly coupled to the combustion chamber. An expansion turbine is fluidly coupled to the combustion chamber. In an embodiment, the system has a low turbine pressure ratio.

A system for generating combustion gases in a turbine engine may comprise a combustion chamber and a fuel injection system configured to inject a metal-based fuel into the combustion chamber. A metal-based fuel source may be configured to deliver the metal-based fuel to the fuel injection system. The metal-based fuel may comprise a metal powder.

A system for generating combustion gases in a turbine engine may comprise a combustion chamber and a fuel injection system configured to inject a metal-based fuel into the combustion chamber. A metal-based fuel source may be configured to deliver the metal-based fuel to the fuel injection system. The metal-based fuel may comprise a metal powder.

A propulsion system is provided and includes a solid hydride storage unit from which gaseous hydrogen fuel is drawn, an engine comprising a combustion chamber and a piping system to draw the gaseous hydrogen fuel from the solid hydride storage unit, the piping system being interposed between the solid hydride storage unit and the combustion chamber. The combustion chamber is receptive of the gaseous hydrogen fuel drawn from the solid hydride storage unit by the piping system and is configured to combust the gaseous hydrogen fuel to drive an operation of the engine.

A propulsion system is provided and includes a solid hydride storage unit from which gaseous hydrogen fuel is drawn, an engine comprising a combustion chamber and a piping system to draw the gaseous hydrogen fuel from the solid hydride storage unit, the piping system being interposed between the solid hydride storage unit and the combustion chamber. The combustion chamber is receptive of the gaseous hydrogen fuel drawn from the solid hydride storage unit by the piping system and is configured to combust the gaseous hydrogen fuel to drive an operation of the engine.

A propulsion system is provided and includes a solid hydride storage unit from which gaseous hydrogen fuel is drawn, an engine comprising a combustion chamber and a piping system to draw the gaseous hydrogen fuel from the solid hydride storage unit, the piping system being interposed between the solid hydride storage unit and the combustion chamber. The combustion chamber is receptive of the gaseous hydrogen fuel drawn from the solid hydride storage unit by the piping system and is configured to combust the gaseous hydrogen fuel to drive an operation of the engine.

A propulsion system is provided and includes a solid hydride storage unit from which gaseous hydrogen fuel is drawn, an engine comprising a combustion chamber and a piping system to draw the gaseous hydrogen fuel from the solid hydride storage unit, the piping system being interposed between the solid hydride storage unit and the combustion chamber. The combustion chamber is receptive of the gaseous hydrogen fuel drawn from the solid hydride storage unit by the piping system and is configured to combust the gaseous hydrogen fuel to drive an operation of the engine.

A combustion system, particle separator and feed system for a combined heat and power system is provided. The system includes a combustion chamber configured to directly combust solid organic material. A combustion system is provided having a pressure vessel and a combustion chamber. The combustion chamber is disposed within the pressure vessel with a space therebetween. A conical plenum is disposed within the combustion chamber that distributes fuel to a perimeter of the combustion chamber. Plenum tubes extend from the conical plenum are configured to lift and suspend the solid organic material and induce a cyclonic flow within the combustion chamber. A port is coupled between an air source and the space, wherein during operation, air flows from the air source through the port and into the space to provide a thermal break between the combustion chamber and the pressure vessel.

A combustion system, particle separator and feed system for a combined heat and power system is provided. The system includes a combustion chamber configured to directly combust solid organic material. A combustion system is provided having a pressure vessel and a combustion chamber. The combustion chamber is disposed within the pressure vessel with a space therebetween. A conical plenum is disposed within the combustion chamber that distributes fuel to a perimeter of the combustion chamber. Plenum tubes extend from the conical plenum are configured to lift and suspend the solid organic material and induce a cyclonic flow within the combustion chamber. A port is coupled between an air source and the space, wherein during operation, air flows from the air source through the port and into the space to provide a thermal break between the combustion chamber and the pressure vessel.