The invention relates to the field of power engineering and can be used in heating systems, more particularly in water heaters or boilers, in disposal systems fueled by the combustion of associated gas, and in electrical energy generating systems. A pulse combustion apparatus comprises a combustion chamber 14, at least one resonant channel 28 connected to the combustion chamber 14, a device 15 for removing heat which is linked to the combustion chamber and to the resonant channel and which consists of at least one chamber and/or at least one tube for a heat-exchanging agent 16. A device for supplying air and combustible gas, which is connected to the combustion chamber 14, comprises at least one gaseous medium nonreturn valve 17 and at least one guard chamber 18 of said valve 17. The at least one gaseous medium nonreturn valve 17 is directly or indirectly linked to the device 15 for removing heat via a vibration isolator 19, 24.

The invention relates to the field of power engineering and can be used in heating systems, more particularly in water heaters or boilers, in disposal systems fueled by the combustion of associated gas, and in electrical energy generating systems. A pulse combustion apparatus comprises a combustion chamber 14, at least one resonant channel 28 connected to the combustion chamber 14, a device 15 for removing heat which is linked to the combustion chamber and to the resonant channel and which consists of at least one chamber and/or at least one tube for a heat-exchanging agent 16. A device for supplying air and combustible gas, which is connected to the combustion chamber 14, comprises at least one gaseous medium nonreturn valve 17 and at least one guard chamber 18 of said valve 17. The at least one gaseous medium nonreturn valve 17 is directly or indirectly linked to the device 15 for removing heat via a vibration isolator 19, 24.

A multi-fueled impulse initiator that includes a fuel source equipped with a control valve, an air source equipped with a control valve, a removable air flow insert having opposing inlet and outlet faces, an air expansion chamber fluidly connected to both the air source and the inlet face of the removable air flow insert, and an igniter assembly having a sparking tip. The removable air flow insert includes channels traversing from the inlet face to the outlet face of the air flow insert.

A multi-fueled impulse initiator that includes a fuel source equipped with a control valve, an air source equipped with a control valve, a removable air flow insert having opposing inlet and outlet faces, an air expansion chamber fluidly connected to both the air source and the inlet face of the removable air flow insert, and an igniter assembly having a sparking tip. The removable air flow insert includes channels traversing from the inlet face to the outlet face of the air flow insert.

A pulse combustor system for efficiently operating a pulse combustor. The pulse combustor system includes the pulse combustor and a duct. The pulse combustor has a combustion chamber defining an internal space, a conduit having a first end in fluid communication with the internal space and a second end in fluid communication with an environment outside of the pulse combustor system, and a fuel injector configured to inject fuel into the internal space of the combustion chamber. The duct has two openings, with one opening disposed adjacent to the second end of the conduit. The pulse combustor system has an average operating frequency, and the duct has a length that is about one quarter of a wavelength corresponding to the average operating frequency. The pulse combustor and the duct each has a central longitudinal axis, and the two axes are substantially aligned.

In one embodiment, a power generation system includes a pulse detonation engine including a combustion chamber, a linear power generator including a working chamber, and a nozzle positioned between the combustion chamber and the working chamber that expands exhaust gas expelled from the combustion chamber, wherein the nozzle increases thermodynamic efficiency of the system.

In one embodiment, a power generation system includes a pulse detonation engine including a combustion chamber, a linear power generator including a working chamber, and a nozzle positioned between the combustion chamber and the working chamber that expands exhaust gas expelled from the combustion chamber, wherein the nozzle increases thermodynamic efficiency of the system.

A multi-fueled impulse initiator that includes a fuel source equipped with a control valve, an air source equipped with a control valve, a removable air flow insert having opposing inlet and outlet faces, an air expansion chamber fluidly connected to both the air source and the inlet face of the removable air flow insert, and an igniter assembly having a sparking tip. The removable air flow insert includes channels traversing from the inlet face to the outlet face of the air flow insert.

A device for generating pressure waves of high amplitude, in particular for boiler cleaning, has a pressure-resistant container (21, 40) with a combustion chamber (121) inserted therein, which can be filled with a flowable burn-off material via supply lines. The pressure-resistant container has a discharge opening (306) for the directional discharge of gas pressure generated by ignition of the combustible material. A piston (70) closes the discharge opening, can release it for directional discharge and can be pushed back into the initial position by a spring device. With respect to its longitudinal direction (305), the seat of the piston (70) has a piston surface (302) inclined obliquely to the discharge opening (306), which is arranged opposite a housing surface (303) also inclined obliquely to the discharge opening (306), the housing surface (303) opening opposite the piston surface (302) at an angle (304) oriented towards the discharge opening (306) from a closure line (65) oriented perpendicularly to the piston direction (90).

A device for generating pressure waves of high amplitude, in particular for boiler cleaning, has a pressure-resistant container (21, 40) with a combustion chamber (121) inserted therein, which can be filled with a flowable burn-off material via supply lines. The pressure-resistant container has a discharge opening (306) for the directional discharge of gas pressure generated by ignition of the combustible material. A piston (70) closes the discharge opening, can release it for directional discharge and can be pushed back into the initial position by a spring device. With respect to its longitudinal direction (305), the seat of the piston (70) has a piston surface (302) inclined obliquely to the discharge opening (306), which is arranged opposite a housing surface (303) also inclined obliquely to the discharge opening (306), the housing surface (303) opening opposite the piston surface (302) at an angle (304) oriented towards the discharge opening (306) from a closure line (65) oriented perpendicularly to the piston direction (90).