Patent ID: 8371129

Claim:
A standing wave thermoacoustic piezoelectric apparatus for generating electrical energy from heat energy, the standing wave thermoacoustic piezoelectric apparatus comprising: a housing comprising a compressible fluid, the housing having a first portion and a second portion, wherein the second portion receives the heat energy from a heat source for creating a temperature gradient between the second portion and the first portion of the housing, the first portion comprising a cold heat exchanger; a porous stack configured within the housing, the porous stack having the cold heat exchanger positioned at one end, whereby the compressible fluid traverses between the first portion and the second portion through the porous stack to generate standing acoustic waves for generating acoustic energy in the first portion; and a piezoelectric bimorph configured at an end of the first portion opposite to an end of the first portion having the cold heat exchanger, wherein the piezoelectric bimorph is capable of oscillating based on the acoustic energy, the oscillation of the piezoelectric bimorph is utilized for generating the electrical energy.