Standing wave thermoacoustic piezoelectric refrigerator

a thermoacoustic piezoelectric refrigerator and piezoelectric technology, applied in the field of refrigeration, can solve the problem of still required movement of the masses in the thermoacoustic refrigerator

Inactive Publication Date: 2011-10-20
KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of moving masses in the thermoacoustic refrigerators is still required in such thermoacoustic refrigerators.

Method used

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  • Standing wave thermoacoustic piezoelectric refrigerator
  • Standing wave thermoacoustic piezoelectric refrigerator
  • Standing wave thermoacoustic piezoelectric refrigerator

Examples

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Embodiment Construction

[0014]Before describing in detail embodiments that are in accordance with the invention, it should be observed that the embodiments reside primarily in combinations of apparatus components related to a standing wave thermoacoustic piezoelectric refrigerator. Accordingly, the apparatus components have been represented where appropriate by conventional symbols in the drawings, showing only those specific details that are pertinent to understanding the embodiments of the invention so as not to obscure the disclosure with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein.

[0015]In this document, relational terms such as first and second, top and bottom, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms “comprises,”“comprising,” or any other variatio...

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Abstract

A standing wave thermoacoustic piezoelectric refrigerator is provided. The standing wave thermoacoustic piezoelectric refrigerator includes a housing, a porous stack, and a piezoelectric bimorph. The housing comprises a compressible fluid and has a first portion and a second portion. The porous stack is positioned between a hot heat exchanger and a cold heat exchanger within the housing, at an end of the first portion of the housing opposite to an end of the first portion having the porous stack and is capable of oscillating to generate acoustic energy upon receiving energy from an external energy source. The oscillation of the piezoelectric bimorph compresses and expands the compressible fluid within the housing. Whereby, the compressible fluid traverses between the first portion and the second portion through the porous stack to generate standing acoustic waves enabling the compressible fluid to transfer heat from the cold heat exchanger to the hot heat exchanger.

Description

FIELD OF THE INVENTION[0001]The invention generally relates to refrigeration, and more specifically, to a standing wave thermoacoustic piezoelectric refrigerator for refrigeration by utilizing standing acoustic waves.BACKGROUND OF THE INVENTION[0002]Thermoacoustic engines are commonly used as heat pumps or refrigerators, they utilize energy associated with thermoacoustic waves for refrigeration process.[0003]In existing technologies, usually thermoacoustic refrigerators utilize energy associated with the thermoacoustic waves to transfer heat from a lower temperature end to a higher temperature end. Such thermoacoustic refrigerators use transducers as acoustic drivers for utilizing the acoustic energy. Further, the thermoacoustic refrigerators use a hot heat exchanger and a cold heat exchanger. A porous structure may be configured between the hot heat exchanger and the cold heat exchanger. The porous structure is made up of one or more of metal foils, a metal mesh, a sheet of a foame...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F25B21/00F25B27/00F25B9/00
CPCF25B9/145F25B2309/1407F25B2309/1402
Inventor ALDRAIHEM, OSAMA J.
Owner KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY
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