Abstract: A thermoacoustic device that includes a resonator, wherein the resonator includes a stack. During operation, a cold zone of the stack is configured to receive at least one fluid from a hot zone of the stack; wherein a temperature of the hot zone exceeds a temperature of the cold zone. The thermoacoustic device also includes a conveyor for conveying at least some of the at least one fluid from the cold zone of the stack to the hot zone of the stack.

Abstract: A thermoacoustic engine that consists essentially of: a heat exchanger; and a resonator that is in communication with the heat exchanger. The resonator includes a media configured to absorb one or more electromagnetic signals. The thermoacoustic engine is configured to receive the one or more electromagnetic signals and generate acoustic power.

Abstract: According to an aspect of some embodiments of the present invention there is provided a method for converting energy. The method comprises receiving energy from an external source, using the received energy for inducing a mass exchange process to release thermodynamic energy, and converting the thermodynamic energy directly into electrical energy at sufficient amount for performing work therewith. In some embodiments of the present invention, a portion of the released energy is converted to a pressure wave, and the mechanical energy constituted by the pressure wave is converted to non-mechanical energy.

Abstract: According to an aspect of some embodiments of the present invention there is provided a method for converting energy. The method comprises receiving energy from an external source, using the received energy for inducing a mass exchange process to release thermodynamic energy, and converting the thermodynamic energy directly into electrical energy at sufficient amount for performing work therewith. In some embodiments of the present invention, a portion of the released energy is converted to a pressure wave, and the mechanical energy constituted by the pressure wave is converted to non-mechanical energy.

Abstract: System and method for converting energy; the system comprising: an acoustic resonator; a phase-exchange device configured for forming across a section of said resonator a concentration gradient of a first substance in a gaseous medium contained by said resonator, to thereby generate a pressure wave within said resonator; and a conversion device for converting mechanical energy constituted by said pressure wave to non-mechanical energy.

Abstract: System and method for converting energy; the system comprising: an acoustic resonator; a phase-exchange device configured for forming across a section of said resonator a concentration gradient of a first substance in a gaseous medium contained by said resonator, to thereby generate a pressure wave within said resonator; and a conversion device for converting mechanical energy constituted by said pressure wave to non-mechanical energy.