Thermoacoustic Heat Engine System

Abstract

The invention relates to the technical field of energy conversion devices, and provides a thermoacoustic heat engine system, comprising: at least one first thermoacoustic heat engine unit, wherein the first thermoacoustic heat engine unit includes a first main room temperature heat exchanger, a A first regenerator, a first heat absorber, and an elastic film device; the elastic film device is used for simultaneously suppressing the Gedeon acoustic flow inside the thermoacoustic heat engine system and the jet at the outlet of the first heat absorber driven sound stream. The thermoacoustic heat engine system replaces the thermal buffer tube, laminar fluidized wire mesh and sub-room temperature heat exchanger in the traditional thermoacoustic heat engine by an elastic membrane device, and the elastic membrane device is communicated with the first heat absorber, which simplifies the thermoacoustic heat engine system. The structure of the thermoacoustic heat engine completely suppresses the Gedeon acoustic flow inside the thermoacoustic heat engine system and the acoustic flow driven by the jet at the outlet of the first heat absorber, thereby reducing the heat and / or cooling loss of the thermoacoustic heat engine.

Description

technical field [0001] The invention relates to the technical field of energy conversion devices, in particular to a thermoacoustic heat engine system. Background technique [0002] In a loop thermoacoustic heat engine, both acoustic flows have a negative impact on the thermal performance and stability of the system. The first is the Gedeon acoustic flow, that is, due to the effect of nonlinear factors, there is a unidirectional time-averaged mass flow in the loop in addition to the fluctuation of the sound field itself. In a thermoacoustic engine, such a time-averaged mass flow uselessly transports heat from a high temperature heat source to room temperature without producing acoustic work; in a thermoacoustic refrigerator, it adds to the heat sink (cold-end heat exchanger) an unwanted heat load. [0003] The second is the acoustic flow driven by the jet inside the thermal buffer tube. During the reciprocating oscillation of the gas, the diameter change between the core t...

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Problems solved by technology

[0005] In view of the above-mentioned technical defects and application requirements, this application proposes a thermoacoustic heat engine system to solve the problem of the Gedeon acoustic flow inside the system and the jet-driven acoustic flow inside the thermal buffer tube, which will affect the thermal performance and stability of the thermoacoustic heat engine system. negative impact issues

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