Methods to focus acoustic energy of thermoacoustic engine

被引：0

作者：

Sun, D. M. ^{[1
]}

Qiu, L. M. ^{[1
]}

Wang, B. ^{[1
]}

Xiao, Y. ^{[1
]}

机构：

[1] Zhejiang Univ, Inst Refrigerat & Cryogen, Hangzhou 310027, Peoples R China

来源：

CRYOGENICS AND REFRIGERATION, PROCEEDINGS | 2008年

关键词：

D O I：

暂无

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A well designed transfer line has been verified to be able to amplify the output pressure amplitude of a thermoacoustic engine (TE), which offers a feasible way to focus acoustic energy of the engine to its load. Some transmission characteristics of acoustic amplifiers are studied based on linear thermoacoustics theory. Furthermore, a novel cascade acoustic amplifier and a Helmholtz resonator are proposed, which show strong amplifying ability. In experiments, a two-stage cascade acoustic amplifier amplifies the pressure ratio from 1.177 to 1.62 and produces pressure amplitude of 0.547MPa with nitrogen of 2.20MPa as working gas. A Helmholtz resonator amplifies the pressure ratio from 1.22 to 1.49 and produces a pressure amplitude of 0.44MPa.

引用

页码：204 / 208

页数：5

共 6 条

[1] An acoustical pump capable of significantly increasing pressure ratio of thermoacoustic heat engines [J].

Luo, EC ;

Hu, JY ;

Dai, W ;

Chen, YY .

CHINESE SCIENCE BULLETIN, 2006, 51 (08) :1014-1016

[2] Investigation on a thermo acoustically driven pulse tube cooler working at 80 K [J].

Qiu, LM ;

Sun, DM ;

Yan, WL ;

Chen, P ;

Gan, ZH ;

Zhang, X ;

Chen, GB .

CRYOGENICS, 2005, 45 (05) :380-385

[3] Simple harmonic analysis of regenerators [J].

Swift, GW ;

Ward, WC .

JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER, 1996, 10 (04) :652-662

[4] THERMOACOUSTIC ENGINES [J].

SWIFT, GW .

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1988, 84 (04) :1145-1180

[5]

SWIFT GW, 1999, TXB THERMOACOUSTICS

[6]

WARD WC, 1994, J ACOUST SOC AM, V95, P3671, DOI 10.1121/1.409938

← 1 →